CN112378362A - Bottom clearance measurement method for automobile walking experiment of roll-on-roll-off ship - Google Patents

Abstract

Translated fromChinese

本发明公开了一种滚装船用汽车行走实验的底部间隙测量方法，包含以下步骤：步骤一：试验车停止于各底部间隙测量点，测得静态情况下各点间隙值；步骤二：根据静态情况下测得的各点间隙值，递减选取若干数值用于动态情况下底部间隙测量；步骤三：基于步骤二确定的若干数值，在试验车各测量部位布置若干软质金属丝；步骤四：试验车以货舱最大允许速度驶过测量点，根据各金属丝的弯曲情况确定底部间隙的范围，从而获得运动时的底部间隙范围。本发明在试验车各测量部位布置若干软质金属丝实现动态测量，结构简单，操作方便，测量效率高。

The invention discloses a bottom clearance measurement method for a ro-ro marine vehicle walking test, comprising the following steps: step 1: the test vehicle stops at each bottom clearance measurement point, and the clearance value of each point under static conditions is measured; step 2: according to the static condition For the clearance value of each point measured in the test vehicle, select a number of values in decreasing order to measure the bottom clearance under dynamic conditions; Step 3: Based on the values determined in Step 2, arrange a number of soft metal wires at each measurement position of the test vehicle; Step 4: The test vehicle drove past the measurement point at the maximum allowable speed of the cargo compartment, and determined the range of the bottom clearance according to the bending of each wire, so as to obtain the bottom clearance range during movement. The present invention arranges a plurality of soft metal wires in each measurement position of the test vehicle to realize dynamic measurement, and has the advantages of simple structure, convenient operation and high measurement efficiency.

Description

Bottom clearance measurement method for automobile walking experiment of roll-on-roll-off ship

Technical Field

The invention relates to a bottom clearance measuring method, in particular to a bottom clearance measuring method for an automobile walking experiment for a roll-on/roll-off ship, and belongs to the field of roll-on/roll-off ship application.

Background

The bottom clearance is the important technical index of car ro-Ro vessel, test data mainly for follow-up vehicle loading (especially small-size passenger car) provide the basis, be convenient for take necessary measures when the bottom clearance is not enough, handle barrier or structure that lead to the not enough clearance, security when guaranteeing the vehicle loading, the static clearance data of each point is surveyed mainly through the test car is static at the measuring position to traditional measurement, but for guaranteeing loading efficiency when actual vehicle loading, the vehicle all loads the ship with the maximum allowable speed, therefore the bottom clearance under the dynamic condition measures and more fits reality and has the referential meaning. In general, the bottom clearance during movement is different from the static clearance, and the measurement is difficult, so a suitable simple measurement method needs to be found.

Disclosure of Invention

The invention aims to solve the technical problem of providing a method for measuring the bottom clearance of an automobile walking experiment of a ro-ro ship, and realizing the measurement of the dynamic bottom clearance of the automobile of the ro-ro ship.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a bottom clearance measuring method for a rolling ship automobile walking experiment is characterized by comprising the following steps:

the method comprises the following steps: stopping the test vehicle at each bottom gap measuring point, and measuring the gap value of each point under the static condition;

step two: according to the gap values of all points measured under the static condition, progressively reducing and selecting a plurality of numerical values for measuring the bottom gap under the dynamic condition;

step three: arranging a plurality of soft metal wires at each measuring part of the test vehicle based on the plurality of numerical values determined in the step two;

step four: the test vehicle runs through the measuring point at the maximum allowable speed of the cargo compartment, and the range of the bottom clearance is determined according to the bending condition of each metal wire, so that the range of the bottom clearance during movement is obtained.

Further, the step one is specifically

Selecting a plurality of bottom clearance measuring points needing bottom clearance measurement on the roll-on-roll-off ship, sequentially stopping the test vehicle on each bottom clearance measuring point, keeping the test vehicle static, and measuring the bottom clearance value of each bottom clearance measuring point under the static condition of the test vehicle.

Further, the second step is specifically

Selecting a bottom clearance measuring point, and recording the bottom clearance value under the static condition measured by the measuring point as a dynamic maximum value S_maxSetting the precision interval of the bottom clearance to be measured as delta S and according to the dynamic maximum value S_maxDetermining a plurality of values S according to the precision interval Delta S in a descending manner₀、S₁、S₂…S_maxIn which S is_max-1=S_max-ΔS。

Further, the third step is specifically

A plurality of values S determined based on the second step₀、S₁、S₂…S_maxA plurality of soft metal wires are arranged at each measuring part of the test vehicle, and the lengths of the soft metal wires are S₀、S₁、S₂…S_maxThe soft metal wires are arranged in the vertical direction and fixed on a measuring point at the bottom of the vehicle, and the soft metal wires are arranged in sequence according to the length.

Further, the fourth step is specifically

The test vehicle drives through the measuring point at the maximum allowable speed of the cargo compartment, after the test vehicle stops, the bending states of a plurality of arranged metal wires are observed, the range of the bottom clearance is determined according to the bending condition of each metal wire, the bending states of the metal wires are confirmed from the longest metal wire in sequence, and if the length is S_max、S_max-1…S_mAll of the wires of (2) are bent, and S_m+1The wire of (a) is not bent, a bottom clearance range (S) in motion is obtained_m+1，S_m）。

Further, step five: in the first test, if all the wires are bent, the maximum value is re-determined from the initially selected minimum value of the several data.

Compared with the prior art, the invention has the following advantages and effects: the invention provides a method for measuring a bottom clearance under the dynamic condition of an automobile roll-on-roll-off ship, which realizes dynamic measurement by arranging a plurality of soft metal wires at each measurement part of a test vehicle, and has the advantages of simple structure, convenient operation and high measurement efficiency.

Drawings

FIG. 1 is a schematic diagram of a bottom clearance measurement method for a rolling and rolling ship automobile walking experiment.

Detailed Description

To elaborate on technical solutions adopted by the present invention to achieve predetermined technical objects, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, it is obvious that the described embodiments are only partial embodiments of the present invention, not all embodiments, and technical means or technical features in the embodiments of the present invention may be replaced without creative efforts, and the present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

As shown in fig. 1, the method for measuring the bottom clearance in the automobile walking experiment for the roll-on/roll-off ship of the invention is characterized by comprising the following steps:

the method comprises the following steps: stopping the test vehicle at each bottom gap measuring point, and measuring the gap value of each point under the static condition;

selecting a plurality of bottom clearance measuring points needing bottom clearance measurement on the roll-on-roll-off ship, sequentially stopping the test vehicle on each bottom clearance measuring point, keeping the test vehicle static, and measuring the bottom clearance value of each bottom clearance measuring point under the static condition of the test vehicle.

Step two: according to the gap values of all points measured under the static condition, progressively reducing and selecting a plurality of numerical values for measuring the bottom gap under the dynamic condition;

selecting a bottom clearance measuring point, and recording the bottom clearance value under the static condition measured by the measuring point as a dynamic maximum value S_maxSetting the precision interval of the bottom clearance to be measured as delta S and according to the dynamic maximum value S_maxDetermining a plurality of values S according to the precision interval Delta S in a descending manner₀、S₁、S₂…S_maxIn which S is_max-1=S_max-ΔS。

Step three: arranging a plurality of soft metal wires at each measuring part of the test vehicle based on the plurality of numerical values determined in the step two;

a plurality of values S determined based on the second step₀、S₁、S₂…S_maxA plurality of soft metal wires are arranged at each measuring part of the test vehicle, and the lengths of the soft metal wires are S₀、S₁、S₂…S_maxThe soft metal wires are arranged in the vertical direction and fixed on a measuring point at the bottom of the vehicle, and the soft metal wires are arranged in sequence according to the length.

Step four: the test vehicle runs through the measuring point at the maximum allowable speed of the cargo compartment, and the range of the bottom clearance is determined according to the bending condition of each metal wire, so that the range of the bottom clearance during movement is obtained.

The test vehicle drives through the measuring point at the maximum allowable speed of the cargo compartment, after the test vehicle stops, the bending states of a plurality of arranged metal wires are observed, the range of the bottom clearance is determined according to the bending condition of each metal wire, the bending states of the metal wires are confirmed from the longest metal wire in sequence, and if the length is S_max、S_max-1…S_mAll of the wires of (2) are bent, and S_m+1The wire of (a) is not bent, a bottom clearance range (S) in motion is obtained_m+1，S_m）。

And then repeating the process from the second step to the fourth step to select other measuring points for testing.

Step five: in the first test, if the wire is fully bent, the maximum value is re-determined from the minimum value of the initially selected data.

The invention provides a method for measuring a bottom clearance under the dynamic condition of an automobile roll-on-roll-off ship, which realizes dynamic measurement by arranging a plurality of soft metal wires at each measurement part of a test vehicle, and has the advantages of simple structure, convenient operation and high measurement efficiency.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

Translated fromChinese

1.一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于包含以下步骤：1. a method for measuring the bottom clearance of a ro-ro marine vehicle traveling experiment is characterized in that comprising the following steps:步骤一：试验车停止于各底部间隙测量点，测得静态情况下各点间隙值；Step 1: The test vehicle stops at each bottom clearance measurement point, and measures the clearance value of each point under static conditions;步骤二：根据静态情况下测得的各点间隙值，递减选取若干数值用于动态情况下底部间隙测量；Step 2: According to the clearance value of each point measured under static conditions, select a number of values in decreasing order for bottom clearance measurement under dynamic conditions;步骤三：基于步骤二确定的若干数值，在试验车各测量部位布置若干软质金属丝；Step 3: Based on several values determined in Step 2, arrange a number of soft metal wires at each measurement position of the test vehicle;步骤四：试验车以货舱最大允许速度驶过测量点，根据各金属丝的弯曲情况确定底部间隙的范围，从而获得运动时的底部间隙范围。Step 4: The test vehicle drives past the measurement point at the maximum allowable speed of the cargo compartment, and determines the range of the bottom clearance according to the bending of each wire, so as to obtain the bottom clearance range during movement.2.按照权利要求1所述的一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于：所述步骤一具体为2. according to the bottom clearance measuring method of a kind of ro-ro marine vehicle walking experiment according to claim 1, it is characterized in that: described step one is specifically:在滚装船上选定几个需要进行底部间隙测量的底部间隙测量点，将试验车依次停止在各个底部间隙测量点上并保持试验车静止，测得各底部间隙测量点的试验车静态情况下的底部间隙值。Select several bottom clearance measurement points for bottom clearance measurement on the ro-ro ship, stop the test vehicle at each bottom clearance measurement point in turn and keep the test vehicle stationary, and measure the bottom clearance measurement points of the test vehicle under static conditions. bottom clearance value.3.按照权利要求1所述的一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于：所述步骤二具体为3. according to the bottom clearance measuring method of a kind of ro-ro marine vehicle walking experiment according to claim 1, it is characterized in that: described step 2 is specifically:选取一个底部间隙测量点，将该测量点测得的静态情况下的底部间隙值记为动态最大值S_max，设定需要测量的底部间隙的精度区间为ΔS，根据动态最大值S_max按照精度区间ΔS依次递减确定若干数值S₀、S₁、S₂…S_max，其中S_max-1=S_max-ΔS。Select a bottom clearance measurement point, record the bottom clearance value measured at the measurement point under static conditions as the dynamic maximum value S_max , and set the accuracy interval of the bottom clearance to be measured as ΔS, according to the dynamic maximum value S_max according to the accuracy The interval ΔS decreases sequentially to determine several values S₀ , S₁ , S₂ . . . S_max , where S_max-1 =S_max -ΔS.4.按照权利要求1所述的一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于：所述步骤三具体为4. according to the bottom clearance measuring method of a kind of ro-ro marine vehicle walking experiment according to claim 1, it is characterized in that: described step 3 is specifically:基于步骤二确定的若干数值S₀、S₁、S₂…S_max，在试验车各测量部位布置若干软质金属丝，若干软质金属丝的长度分别为S₀、S₁、S₂…S_max，若干软质金属丝沿竖直方向设置并且固定在车辆底部测量点上，并且若干软质金属丝按长度顺序设置。Based on several values S₀ , S₁ , S₂ . . . S_max determined in step 2, a number of soft metal wires are arranged at each measurement position of the test vehicle, and the lengths of the several soft metal wires are respectively S₀ , S₁ , S₂ . . . S_max , several soft wires are arranged in the vertical direction and fixed on the vehicle bottom measurement point, and several soft wires are arranged in order of length.5.按照权利要求1所述的一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于：所述步骤四具体为5. according to the bottom clearance measuring method of a kind of ro-ro marine vehicle walking experiment according to claim 1, it is characterized in that: described step 4 is specifically:试验车以货舱最大允许速度驶过测量点，当试验车停下后，观察设置好的若干金属丝的弯曲状态，根据各金属丝的弯曲情况确定底部间隙的范围，按顺序从最长的金属丝开始确认金属丝的弯曲状态，若长度为S_max、S_max-1…S_m的金属丝都弯曲，而S_m+1的金属丝没有弯曲，则获得运动时的底部间隙范围（S_m+1，S_m）。The test car drives past the measurement point at the maximum allowable speed of the cargo compartment. When the test car stops, observe the bending state of several wires that have been set up, and determine the range of the bottom gap according to the bending of each wire. The wire starts to confirm the bending state of the metal wire. If the metal wires with lengths S_max , S_max-1 ... S_m are all bent, and the metal wire of S_m+1 is not bent, the bottom clearance range during movement (S_{m +1} , S_m ).6.按照权利要求1所述的一种滚装船用汽车行走实验的底部间隙测量方法，其特征在于：步骤五：首次试验时，如果所有的金属丝全部弯曲，则根据初始选定的若干数据中的最小值重新确定最大值。6. according to the bottom clearance measuring method of a kind of ro-ro marine vehicle traveling experiment according to claim 1, it is characterized in that: step 5: during the first test, if all the wires are all bent, then according to some initially selected data The minimum value in redetermines the maximum value.

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