CN201942437U - Tower crane trolley position detector and tower crane moment detector - Google Patents

Abstract

The utility model discloses a tower crane trolley position detector, which relates to the technical field of a tower crane and is used for detecting the distance from a tower crane trolley to a tower crane rotary center. The tower crane trolley position detector comprises a linear displacement sensor, wherein the linear displacement sensor is fixed on the root part of a hanging arm of the tower crane, the detection end of the linear displacement sensor is connected with the tower crane trolley, and the displacement signal output end of the linear displacement sensor is connected with a displacement signal receiver. The tower crane trolley position detector in the structure has the advantages that the linear displacement sensor only needs to be arranged on the root part of the hanging arm, the use is very convenient, in addition, the tower crane trolley position detector is not influenced by problems such as elastic change, gravity falling, insufficient tensioning and the like of a steel wire rope, and the tower crane trolley position detection is very accurate. The utility model also provides a tower crane moment detector.

Description

Tower machine dolly position detecting device and tower machine moment measuring device

Technical field

The utility model relates to the tower crane technical field, relates in particular to a kind of tower machine dolly position detecting device that is used to detect distance between tower machine dolly and the tower machine center of gyration.The utility model also relates to a kind of tower machine moment measuring device.

Background technology

Tower crane (being called for short the tower machine among the application) is a kind of common weight-lifting equipment, and it has advantages such as working space is big, is widely used in the installation of vertical and the horizontal feed and the building element of housing construction material.

The tower machine generally includes pylon, arm, tower machine dolly and suspender, pylon is vertical shape setting, one end of arm is fixed on the upper end of pylon, suspender is connected on the tower machine dolly, tower machine dolly can move reciprocatingly along arm under the driving of the drive cars such as reel of luffing mechanism, but center steering is changeed in the arm wraparound.

Hoisting moment is a principal parameter of tower machine, and hoisting moment is the product of lifting amplitude and hoisting capacity, and described lifting amplitude is the line of centers of suspender and the distance between the center of gyration.Hoisting moment is an important safety index of tower machine, and the hoisting moment of tower machine can not be greater than the nominal hoisting moment.The tower machine need detect the hoisting moment of tower machine in the course of the work, with the hoisting moment that prevents the tower machine greater than the nominal hoisting moment.

At present, usually adopt tower machine moment measuring device that the hoisting moment of tower machine is detected, tower machine moment measuring device detects the position at tower machine dolly place at needs, promptly need to detect tower machine dolly to the distance between the center of gyration, because suspender is connected on the dolly, learn the distance between tower machine dolly and the center of gyration, just can learn the suspender line of centers to the distance between the center of gyration, i.e. the size of lifting amplitude as can be known.

In the prior art, the detection of tower machine dolly position generally is to realize by the potential device that is installed in the multi-functional limiting device on the luffing mechanism reel.

Multi-functional limiting device is installed on the reel of luffing mechanism, connect tower machine dolly by steel rope, because steel rope exists elasticity to change, gravity sag, problems such as tensioning deficiency, make the action of luffing mechanism reel move asynchronous with tower machine dolly, multi-functional limiting device can not truly reflect the change in location of tower machine dolly, make that the accuracy in detection of position of tower machine dolly is lower, and the potential device in the multi-functional limiting device need adopt meter ruler repeatedly to proofread could to use, because meter ruler often uses on ground, the collimation error can produce bigger influence, and then makes that the position probing accuracy of tower machine dolly is lower; When changing luffing mechanism, replacing luffing steel rope, change length of boom, the potential device in the multi-functional limiting device all needs to reset, and makes that the use of tower machine is very inconvenient.

Therefore, how to develop a kind of easy to use, tower machine dolly position detecting device that positional accuracy measurement is high, become the technical barrier that those skilled in the art need to be resolved hurrily.

The utility model content

A purpose of the present utility model provides a kind of tower machine dolly position detecting device, and this tower machine dolly position detecting device is easy to use, position detection accuracy is high; Another purpose of the present utility model provides a kind of tower machine moment measuring device with above-mentioned tower machine dolly position detecting device.

In order to realize above-mentioned first purpose, the utility model provides a kind of tower machine dolly position detecting device, be used to detect the distance between tower machine dolly and the tower machine center of gyration, comprise linear displacement transducer, described linear displacement transducer is fixed on the root of the arm of tower machine, the test side of this linear displacement transducer is connected with tower machine dolly, and the displacement signal mouth of described linear displacement transducer is connected with the displacement signal receiving device.

Preferably, the test side of described linear displacement transducer is connected with the suspender centerline of tower machine dolly.

Preferably, described linear displacement transducer is fixed on the center of gyration line place of tower machine.

Preferably, described linear displacement transducer is the stay cord displacement pickup.

Preferably, described linear displacement transducer is the straightedge rule displacement pickup.

The tower machine dolly position detecting device that the utility model provides comprises linear displacement transducer, linear displacement transducer can detect the displacement information of tower machine dolly in real time, and this displacement signal sent to the displacement signal receiving device, linear displacement transducer is fixed on the root of the arm of tower machine, and its test side is connected with tower machine dolly, can be with the moving of tower machine dolly, linear displacement transducer can be given the displacement signal receiving device with the accurate position feedback of tower machine dolly.

The tower machine dolly position detecting device of this structure, its position measurement to tower machine dolly is not subjected to the influence of factors such as change of replacing, the length of boom of replacing, the steel rope of installation, the luffing mechanism of tower machine, only need linear displacement transducer is installed in the root of arm, it is comparatively convenient to use; And this tower machine dolly position detecting device is not subjected to the influence of problems such as elasticity variation that steel rope exists, gravity sag, tensioning deficiency, and is comparatively accurate to the position probing of tower machine dolly.

In order to realize above-mentioned second purpose, the utility model also provides a kind of tower machine moment measuring device, comprise moment monitor, tower machine dolly position detecting device, described tower machine dolly position detecting device is above-mentioned tower machine dolly position detecting device, and the displacement signal mouth of described linear displacement transducer is connected with the displacement signal input end of moment monitor.Because above-mentioned tower machine dolly position detecting device possesses above-mentioned technique effect, the tower machine moment measuring device with this tower machine dolly position detecting device also should possess the corresponding techniques effect.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of tower machine dolly position-measurement device provided by the utility model;

Wherein, among Fig. 1:

Arm 1,tower machine dolly 2, stay cord displacement pickup 3,end 31.

The specific embodiment

In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Please referring to Fig. 1, Fig. 1 is the structural representation of a kind of specific embodiment of tower machine dolly position-measurement device provided by the utility model.

As shown in Figure 1, the tower machine dolly position detecting device that the utility model provides comprises linear displacement transducer, linear displacement transducer can detect the displacement information oftower machine dolly 2 in real time, and this displacement signal sent to the displacement signal receiving device, linear displacement transducer is fixed on the root of the arm 1 of tower machine, and its test side is connected withtower machine dolly 2, can be with the moving oftower machine dolly 2, linear displacement transducer can feed back to the displacement signal receiving device with the accurate location information oftower machine dolly 2.

Linear displacement transducer can detect the displacement information oftower machine dolly 2 in real time, promptly can detecttower machine dolly 2 in real time apart from the distance between the linear displacement transducer, because the distance between linear displacement transducer and the center of gyration is a fixed value,tower machine dolly 2 can be detected in real time apart from the distance between the center of gyration, the lifting amplitude of tower machine can be detected again in real time.

The tower machine dolly position detecting device of this structure, its position measurement totower machine dolly 2 is not subjected to the influence of factors such as change of replacing, arm 1 length of replacing, the steel rope of installation, the luffing mechanism of tower machine, only need linear displacement transducer is installed in the root of arm 1, it is comparatively convenient to use; And this tower machine dolly position detecting device is not subjected to the influence of problems such as elasticity variation that steel rope exists, gravity sag, tensioning deficiency, and is comparatively accurate to the position probing oftower machine dolly 2.

In the concrete scheme, linear displacement transducer can adopt stay cord displacement pickup 3, and theend 31 of stay cord displacement pickup 3 is connected with tower machine dolly 2.Stay cord displacement pickup 3 has that installation dimension is little, compact conformation, big, the precision advantages of higher of measurement stroke, and it can convert mechanical movement to the electric signal transmission that can measure, write down and transmit and give the displacement signal receiving device.

Stay cord displacement pickup 3 is installed in the root of arm 1, theend 31 of stay cord is connected on thetower machine dolly 2, and the straight-line motion of stay cord is aimed at the axis of movement oftower machine dolly 2, during 2 motions of tower machine dolly, one and the proportional electric signal of stay cord miles of relative movement are exported in the extensible and contraction of stay cord.

In the preferred version, the test side of linear displacement transducer can be connected with the suspender centerline oftower machine dolly 2, and this scheme can directly be measured the suspender line of centers to the distance between the linear displacement transducer.

In the preferred version, linear displacement transducer can be fixed on the center of gyration line place of tower machine, and this scheme can directly be measuredtower machine dolly 2 to the distance between the center of gyration line.

In the foregoing description; linear displacement transducer adopts stay cord displacement pickup 3; the tower machine dolly position detecting device that the utility model provides is not limited thereto; linear displacement transducer can also adopt the straightedge rule displacement pickup; being appreciated that all displacement informations that can detecttower machine dolly 2 and can sending the linear displacement transducer of displacement signal all should be in protection domain of the present utility model.

The utility model also provides a kind of tower machine moment measuring device, comprise moment monitor, tower machine dolly position detecting device, described tower machine dolly position detecting device is above-mentioned tower machine dolly position detecting device, and the displacement signal mouth of described linear displacement transducer is connected with the displacement signal input end of moment monitor.Because above-mentioned tower machine dolly position detecting device possesses above-mentioned technique effect, the tower machine moment measuring device with this tower machine dolly position detecting device also should possess the corresponding techniques effect, no longer is described in detail at this.

Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims (6)

1. tower machine dolly position detecting device, be used to detect the distance between tower machine dolly and the tower machine center of gyration, it is characterized in that, comprise linear displacement transducer, described linear displacement transducer is fixed on the root of the arm of tower machine, the test side of this linear displacement transducer is connected with tower machine dolly, and the displacement signal mouth of described linear displacement transducer is connected with the displacement signal receiving device.

2. tower machine dolly position detecting device according to claim 1 is characterized in that the test side of described linear displacement transducer is connected with the suspender centerline of tower machine dolly.

3. tower machine dolly position detecting device according to claim 1 and 2 is characterized in that described linear displacement transducer is fixed on the center of gyration line place of tower machine.

4. tower machine dolly position detecting device according to claim 1 is characterized in that described linear displacement transducer is the stay cord displacement pickup.

5. tower machine dolly position detecting device according to claim 1 is characterized in that described linear displacement transducer is the straightedge rule displacement pickup.

6. tower machine moment measuring device, comprise moment monitor, tower machine dolly position detecting device, it is characterized in that, described tower machine dolly position detecting device is each described tower machine dolly position detecting device of claim 1-5, and the displacement signal mouth of described linear displacement transducer is connected with the displacement signal input end of moment monitor.

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