CN201614281U - Filling amount feedback detection device for liquid filling machine - Google Patents

Abstract

Translated fromChinese

一种液体加注机的加注量反馈检测装置，其特征在于：主要包括活塞式液压缸(1)、齿条(2)、齿轮(3)以及旋转编码器(4)，齿条(2)平行于活塞式液压缸(1)的活塞运动方向布置，且相对活塞式液压缸(1)的缸体沿活塞式液压缸(1)的活塞运动方向滑动连接；活塞式液压缸(1)的活塞杆(5)伸出与齿条(2)连接，带动齿条(2)同步移动；所述齿轮(3)相对活塞式液压缸(1)的缸体转动支承，且与齿条(2)啮合构成齿轮齿条副；旋转编码器(4)的检测轴端与齿轮(3)连接，用以检测齿轮(3)的角位移。本实用新型以活塞式液压缸、齿轮齿条、旋转编码器构成反馈式控制方式控制加注量，加注量精度可达±2％ml。

A filling amount feedback detection device for a liquid filling machine, characterized in that it mainly includes a piston hydraulic cylinder (1), a rack (2), a gear (3), a rotary encoder (4), and a rack (2) ) is arranged parallel to the piston movement direction of the piston hydraulic cylinder (1), and is slidably connected with the cylinder body of the piston hydraulic cylinder (1) along the piston movement direction of the piston hydraulic cylinder (1); the piston hydraulic cylinder (1) The piston rod (5) stretches out to be connected with the rack (2), and drives the rack (2) to move synchronously; 2) Mesh to form a rack and pinion pair; the detection shaft end of the rotary encoder (4) is connected with the gear (3) to detect the angular displacement of the gear (3). The utility model uses a piston type hydraulic cylinder, a rack and pinion, and a rotary encoder to form a feedback control mode to control the filling volume, and the filling volume precision can reach ±2% ml.

Description

The adding amount feedback detection of liquid filling machine

Technical field

The utility model relates to the liquid quantitative charging machine, is specifically related to the adding amount feedback detection of this charging machine, and this charging machine is used to the inner filling of various device paced work liquid, for example is jack, the inner filling of compressor power fluid.

Background technology

Existing liquid filling machine, the common metering fuel charger that the filling station is arranged, and be the charging machine of the inner filling of all kinds of mechanical equipments power fluid, operating fluid.Oiling for mechanical equipment in-to-in enclosed cavities such as jack, compressors also needs to use the vacuum fuel charger especially.The vacuum fuel charger is exactly earlier annular seal space to be vacuumized, and carry out the negative pressure air-tightness then and detect, and then to the annular seal space oiling.

Above-mentioned existing liquid filling machine, no matter be the metering fuel charger of general automobiles petrol service station, still the vacuum fuel charger all is directly to control adding amount by flow counter by pump fuel feed, because of flow counter only is common control accuracy, precision is still accurate inadequately, for example: for some precision equipments, the slight error of its operating fluid adding amount can directly have influence on the quality of equipment; Also having the operating fluid for some equipment filling is that adding amount control inaccuracy promptly may leak and pollute and waste when polluting the fluid of fluid or costliness.

Therefore, for a lot of device fabrication producer, the accuracy control of operating fluid adding amount is the technical matters that needs to be resolved hurrily in its product.

Summary of the invention

The utility model purpose provides the adding amount feedback detection of liquid filling machine, to solve the existing not high technical matters of liquid filling machine adding amount control accuracy.

For achieving the above object, the technical solution adopted in the utility model is: a kind of adding amount feedback detection of liquid filling machine, mainly comprise piston-type hydraulic cylinder, tooth bar, gear and rotary encoder, described tooth bar is parallel to the piston motion direction of piston-type hydraulic cylinder to be arranged, and the cylinder body of relative piston-type hydraulic cylinder is along the piston motion direction sliding block joint of piston-type hydraulic cylinder; The piston rod of described piston-type hydraulic cylinder stretches out with tooth bar and is connected, and drives the same moved further of tooth bar; The cylinder body rotating support of the relative piston-type hydraulic cylinder of described gear, and constitute rack-and-pinion with tooth bar engagement; The detection axle head of described rotary encoder is connected with gear, in order to the angular transposition of detection of gear.

Related content in the technique scheme is explained as follows:

1, in the such scheme, described rotary encoder is a two-way output rotary encoder, in order to the angular transposition and the hand of rotation of detection of gear.

2, in the such scheme, described piston-type hydraulic cylinder cylinder body can be fixedly set on the support, thereby tooth bar can be installed on this support by guide rail, and the also corresponding rotating support of gear is on this support.

The utility model principle of design and effect are: when the utility model uses, with the two ends oil inlet and outlet of piston-type hydraulic cylinder by the road, electromagnetic valve connects Hydraulic Pump and workpiece to be annotated.Promptly by Hydraulic Pump through piston-type hydraulic cylinder to the workpiece operating fluid of annotating, and convert the piston linear displacement amount of piston-type hydraulic cylinder to angular transposition by pinion and rack, detect this angular transposition by rotary encoder again, the final exportable signal of rotary encoder is by the action of control system control plunger formula hydraulic actuating cylinder, thus the formation feedback control system.Because the employing rotary encoder, its precision height can reach ± 2%ml the precision of adding amount.And, regulate also more convenient, adding amount speed is also fast.

Description of drawings

Accompanying drawing 1 is looked scheme drawing for the utility model example structure master;

Accompanyingdrawing 2 is the schematic top plan view of accompanyingdrawing 1;

Accompanyingdrawing 3 is looked scheme drawing for the left side of accompanyingdrawing 1;

Accompanying drawing 4 is applied to the whole hydraulic efficiency pressure system scheme drawing of vacuum fuel charger for the utility model embodiment.

In the above accompanying drawing: 1, piston-type hydraulic cylinder; 2, tooth bar; 3, gear; 4, rotary encoder; 5, piston rod; 6, support; 7, line slideway; 8, pipe link; 9,3-position 4-way solenoid directional control valve; 10, fuel tank; 11, Hydraulic Pump; 12, the first two electromagnetic valves; 13, pressure-relief valve; 14, the second two electromagnetic valves; 15, the 3 two electromagnetic valve; 16, vacuum reservoir; 17, vacuum pump.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: shown in accompanyingdrawing 1～3:

A kind of adding amount feedback detection of liquid filling machine mainly comprises piston-typehydraulic cylinder 1,tooth bar 2,gear 3 androtary encoder 4.

Piston-typehydraulic cylinder 1 cylinder body is fixed on thesupport 6, and the piston motion direction thattooth bar 2 is parallel to piston-typehydraulic cylinder 1 also is arranged on thesupport 6, and and 6 on support through the piston motion direction sliding block joint ofline slideway 7 along piston-type hydraulic cylinder 1.Thepiston rod 5 of piston-typehydraulic cylinder 1 stretches out through apipe link 8 and is connected withtooth bar 2, drivestooth bar 2 same moved further.Onsupport 6, andgear 3 constitutes rack-and-pinions withtooth bar 2 engagements to describedgear 3 through the cylinder body rotating support of the relative piston-typehydraulic cylinder 1 of rotating shaft.The detection axle head of describedrotary encoder 4 is connected with the rotating shaft ofgear 3, in order to the angular transposition of detection ofgear 3.

Describedrotary encoder 4 concrete preferable employing two-way output rotary encoders also can detect hand of rotation like this, thereby make the bidirectional-movement stroke of piston in the piston-typehydraulic cylinder 1 all can be used as oiling usefulness except that the angular transposition of detection ofgear 3.

During concrete the use, need the hydraulic efficiency pressure system of two ends oil inlet and outlet through comprising electromagnetic valve of piston-typehydraulic cylinder 1 connect Hydraulic Pump and workpiece to be annotated, and with the output access control system ofrotary encoder 4, judge according to its signal and the output control electromagnetic valve by control system, thereby the action of final modulated pressure cylinder 1 (beginning or stop filling) constitutes reaction type and detects control system.Described hydraulic efficiency pressure system and control circuit are used prior art and can be realized, no longer describe in detail herein.

When present embodiment is applied in the vacuum fuel charger, preferable hydraulic efficiency pressure system is as shown in Figure 4: the two ends oil inlet and outlet of piston-typehydraulic cylinder 1 is connected in two imports of a 3-position 4-way solenoiddirectional control valve 9, in two outlets of this 3-position 4-way solenoiddirectional control valve 9, connectedtank 10 is to the oil feeding line ofHydraulic Pump 11, and another is connected to workpiece through the first two electromagnetic valves 12.And, be parallel with a pressure-relief valve 13 on the described oil feeding line.The import of the first twoelectromagnetic valves 12 to 10 of fuel tanks are connected through the second two electromagnetic valves 14.Above-mentioned is hydraulic circuit, and other has the gas return path that vacuumizes shown in the dotted line among the figure, connectsvacuum reservoir 16 through the 3 twoelectromagnetic valve 15 on the workpiece, is connected tovacuum pump 17 on thevacuum reservoir 16 again.

Working process is: start,Hydraulic Pump 11 work, the 3 twoelectromagnetic valve 15 opened earlier, workpiece is vacuumized, and when vacuum values reached setting value, the 3 twoelectromagnetic valve 15 closed, the first twoelectromagnetic valves 12 are opened, 3-position 4-way solenoiddirectional control valve 9 left sides get electric, and piston-typehydraulic cylinder 1 advances left, and equipment carries out oiling to workpiece.When piston-typehydraulic cylinder 1 is advanced into certain position left, control system control 3-position 4-way solenoiddirectional control valve 9 right sides get electric, and piston-typehydraulic cylinder 1 moves back to the right, and still carry out oiling to workpiece this moment.When piston-typehydraulic cylinder 1 is back to initial position, 3-position 4-way solenoiddirectional control valve 9 dead electricity, the oiling process finishes.In this process, the oil mass that piston-typehydraulic cylinder 1 left and right sides round trip is pressed just in time reaches the oil mass of required oiling.The second twoelectromagnetic valves 14 are to use when making 1 time initial position of piston-type hydraulic cylinder under the abnomal condition.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims (2)

Translated fromChinese

1.一种液体加注机的加注量反馈检测装置，其特征在于：主要包括活塞式液压缸(1)、齿条(2)、齿轮(3)以及旋转编码器(4)，所述齿条(2)平行于活塞式液压缸(1)的活塞运动方向布置，且相对活塞式液压缸(1)的缸体沿活塞式液压缸(1)的活塞运动方向滑动连接；所述活塞式液压缸(1)的活塞杆(5)伸出与齿条(2)连接，带动齿条(2)同步移动；所述齿轮(3)相对活塞式液压缸(1)的缸体转动支承，且与齿条(2)啮合构成齿轮齿条副；所述旋转编码器(4)的检测轴端与齿轮(3)连接，用以检测齿轮(3)的角位移。1. A filling amount feedback detection device for a liquid filling machine, characterized in that it mainly includes a piston hydraulic cylinder (1), a rack (2), a gear (3) and a rotary encoder (4), the The rack (2) is arranged parallel to the piston movement direction of the piston hydraulic cylinder (1), and is slidably connected to the cylinder body of the piston hydraulic cylinder (1) along the piston movement direction of the piston hydraulic cylinder (1); the piston The piston rod (5) of the hydraulic cylinder (1) stretches out and connects with the rack (2), driving the rack (2) to move synchronously; , and mesh with the rack (2) to form a rack and pinion pair; the detection shaft end of the rotary encoder (4) is connected with the gear (3) to detect the angular displacement of the gear (3).2.根据权利要求1所述液体加注机的加注量反馈检测装置，其特征在于：所述旋转编码器(4)为双路输出旋转编码器，用以检测齿轮(3)的角位移及旋转方向。2. The filling amount feedback detection device of the liquid filling machine according to claim 1, characterized in that: the rotary encoder (4) is a dual-output rotary encoder for detecting the angular displacement of the gear (3) and direction of rotation.

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