CN215767545U

CN215767545U - Pressure leakage detection equipment

Info

Publication number: CN215767545U
Application number: CN202121439687.0U
Authority: CN
Inventors: 郭自澄; 杨再敏
Original assignee: Hitachi Anstamo Chassis System Guangzhou Co ltd
Current assignee: Hitachi Anstamo Chassis System Guangzhou Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-08
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a pressure leakage detection device, which belongs to the field of machining of shock absorbers and comprises a main body, wherein a conveying device is arranged on the main body, a plurality of workpiece discs driven by the conveying device are movably arranged on the conveying device, and clamping positions clamped with outer cylinders of the shock absorbers are arranged on the workpiece discs. Along conveyor's direction of delivery, be equipped with a plurality of detection station in the main part, when the work piece dish that has the bumper shock absorber urceolus of pegging graft carries detection station, the work piece dish is lifted to conveyor top by detection station and is carried out airtight detection. The equipment can simultaneously carry out air tightness detection on the outer cylinders of the plurality of shock absorbers, the conveying device is in contact operation during detection, the detection efficiency is high, and the processing cost of the shock absorbers of enterprises can be reduced.

Description

Pressure leakage detection equipment

Technical Field

The utility model relates to the field of machining of shock absorbers, in particular to a pressure leakage detection device.

Background

In order to quickly attenuate the vibration of a frame and a vehicle body and improve the smoothness and comfort of the running of an automobile, a shock absorber is generally arranged on an automobile suspension system, and a bidirectional barrel type shock absorber is widely adopted on the automobile. The working principle is as follows: during the compression stroke, the shock absorber is compressed, and the piston moves downward in the shock absorber. The volume of the lower chamber of the piston decreases and the oil pressure increases, and oil flows through the flow valve to the upper chamber of the piston. The upper cavity occupies part of the space by the piston rod, the increased volume of the upper cavity is smaller than the decreased volume of the lower cavity, and a part of oil pushes away the compression valve and flows back to the oil storage cylinder. When the shock absorber is in an extension stroke, the wheel is equivalently far away from the vehicle body, and the shock absorber is stretched. The piston of the shock absorber is moved upward. The oil pressure of the upper piston cavity rises, the circulating valve is closed, and the oil in the upper cavity pushes the expansion valve to flow into the lower cavity. The sum of the channel loading areas of the extension valve and the corresponding normally open slit is smaller than the sum of the cross-sectional areas of the compression valve and the corresponding normally open slit channel. The sealing performance of the shock absorber is of great importance to the performance of the shock absorber, the leakage of an oil seal or a cylinder wall of the shock absorber can cause the shock absorber not to work normally, and the working condition of the shock absorber can directly influence the running stability of an automobile and the service life of other parts. In the production and manufacturing process of the shock absorber, the air tightness detection of the outer cylinder of the shock absorber is needed, but the detection process of the existing detection equipment is slow, the working efficiency is low, and the requirements of enterprises cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide pressure leakage detection equipment which can be used for simultaneously detecting the air tightness of a plurality of outer cylinders of shock absorbers, has high detection efficiency and can reduce the processing cost of the shock absorbers of enterprises due to the fact that a conveying device is in contact operation during detection.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a pressure leak detection apparatus comprising:

the shock absorber comprises a main body, wherein a conveying device is arranged on the main body, a plurality of workpiece discs driven by the conveying device are movably arranged on the conveying device, and clamping positions clamped with an outer cylinder of the shock absorber are arranged on the workpiece discs;

along conveyor's direction of delivery, be equipped with a plurality of detection station in the main part, when the work piece dish that has the bumper shock absorber urceolus of pegging graft carries detection station, the work piece dish is lifted to conveyor top by detection station carries out airtight detection.

In a preferred technical scheme of the utility model, the detection station comprises a rack, a jacking mechanism, a pressure leakage mechanism and a mandrel, wherein the rack is arranged at two sides of the conveying device, the jacking mechanism and the pressure leakage mechanism are both arranged on the rack, the jacking mechanism is positioned below the conveying device, the pressure leakage mechanism is positioned above the conveying device, the mandrel is vertically arranged on the jacking mechanism, and the jacking mechanism drives the mandrel to move up and down; when the workpiece disc inserted with the outer damper cylinder is conveyed to a detection station, the core rod moves upwards and extends into the outer damper cylinder, and the outer damper cylinder and the workpiece disc are lifted to the upper part of the conveying device by the core rod; the pressure leakage mechanism corresponds to the core rod, and when the outer cylinder of the shock absorber is lifted, the pressure leakage mechanism moves downwards to press the outer cylinder of the shock absorber and the core rod.

In a preferred technical scheme of the utility model, the jacking mechanism comprises a driving device, a telescopic rod, a mounting plate and a guide rod, the driving device is fixed on the rack, the telescopic rod is vertically arranged in the rack, the mounting plate is arranged on the telescopic rod, the driving device drives the telescopic rod to drive the mounting plate to move up and down, the guide rod is vertically arranged on the rack and penetrates through the mounting plate, and the mandrel is fixed on the mounting plate.

In a preferred technical scheme of the utility model, the core rod is provided with a gas channel therein, the core rod comprises a core rod and a core head, the core rod is vertically fixed on the mounting plate, the core head is arranged at the top of the core rod, the top of the core head is provided with a gas outlet, and the side wall of the core head is provided with a sealing ring.

In a preferred technical scheme of the utility model, the gas flow sensor further comprises a pressurizing device, wherein the pressurizing device is communicated with the gas channel through a gas pipeline, and the gas pipeline is provided with the gas flow sensor.

In a preferred technical scheme of the utility model, the leakage pressing mechanism is a push rod motor or an air cylinder, the output end of the leakage pressing mechanism is vertically arranged downwards, and the central axis of the leakage pressing mechanism is superposed with the central axis of the core rod.

In a preferred technical scheme of the utility model, a positioning rod is arranged on the rack and positioned between the conveying device and the pressure leakage mechanism, and a positioning hole corresponding to the positioning rod is formed in the workpiece disc.

In a preferred technical scheme of the utility model, each workpiece disc is provided with at least two clamping positions, and each mandrel in the detection station corresponds to one clamping position one by one.

In a preferred technical scheme of the utility model, an infrared sensor for sensing the workpiece is further arranged on the detection station, and the infrared sensor is arranged towards the conveying device.

In a preferred technical scheme of the utility model, the detection station further comprises a blocking mechanism, the blocking mechanism comprises a blocking cylinder and a baffle, the blocking mechanism is fixed below the conveying device, and the blocking cylinder drives the baffle to move up and down in the conveying device.

The utility model has the beneficial effects that:

the utility model provides pressure leakage detection equipment, wherein a conveying device is arranged on a main body of the equipment and used for conveying a workpiece disc, and a shock absorber outer cylinder is clamped on the workpiece disc. When the conveying device conveys the workpiece disc to the detection station, the detection station lifts the workpiece disc to the position above the conveying device for air tightness detection. Because the airtight detection process of bumper shock absorber urceolus is gone on in conveyor's top, consequently can not influence conveyor's normal operating in the airtight detection process, conveyor does not stop the operation among the airtight detection process, and a plurality of detection stations can carry out different bumper shock absorber urceolus gas tightness in succession and detect, and this design can improve the efficiency of the airtight detection of bumper shock absorber urceolus, reduces enterprise's bumper shock absorber processing cost.

Drawings

FIG. 1 is a front view of a detection apparatus provided by the present invention;

FIG. 2 is a top view of the detection apparatus provided by the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a schematic structural diagram of a blocking mechanism provided in the present invention;

FIG. 5 is a schematic structural view of a mandrel provided by the present invention;

fig. 6 is a partially enlarged view of fig. 5 at B.

Reference numerals:

1. a main body; 2. a conveying device; 3. a workpiece tray; 4. detecting a station; 5. a damper outer cylinder; 6. an infrared sensor; 7. positioning a rod; 8. a blocking mechanism; 9. a gas line; 31. clamping and connecting; 32. positioning holes; 41. a frame; 42. a jacking mechanism; 43. a core rod; 44. a pressure leakage mechanism; 81. a blocking cylinder; 82. a baffle plate; 91. an airflow sensor; 421. a drive device; 422. a guide bar; 423. a telescopic rod; 424. mounting a plate; 431. a core bar; 432. a core print; 4321. a seal ring; 4322. and a gas outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications such as up, down, left, right, front, and rear … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, motion, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indications are changed accordingly. In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

As shown in fig. 1-5, an indentation detection device includes:

the shock absorber comprises a main body 1, wherein a conveying device 2 is arranged on the main body 1, a plurality of workpiece discs 3 driven by the conveying device 2 are movably arranged on the conveying device 2, and clamping positions 31 clamped with an outer cylinder 5 of the shock absorber are arranged on the workpiece discs 3; more specifically, the damper outer cylinder 5 to be detected is clamped on the clamping position 31 and then fixed with the workpiece disc 3, and further, at least two clamping positions 31 are arranged on each workpiece disc 3, that is, at least two damper outer cylinders 5 can be clamped on each workpiece disc 3.

Along conveyor 2's direction of delivery, be equipped with a plurality of detection station 4 on the main part 1, when the work piece dish 3 that has the bumper shock absorber urceolus 5 of pegging graft carries detection station 4, work piece dish 3 by detection station 4 lifts to conveyor 2 top carries out airtight detection. The conveying device 2 adopts a stacking chain, the workpiece tray 3 is directly placed on the stacking chain and is driven by the stacking chain to move, and the normal operation of the stacking chain cannot be influenced when the workpiece tray 3 is lifted above the conveying device 2.

According to the pressure leakage detection equipment, the conveying device 2 is arranged on the main body 1 of the equipment, the conveying device 2 is used for conveying the workpiece disc 3, and the outer cylinder 5 of the shock absorber is clamped on the workpiece disc 3. When the conveying device 2 conveys the workpiece disc 3 to the detection station 4, the detection station 4 lifts the workpiece disc 3 to the upper part of the conveying device 2 for airtight detection. Because the airtight detection process of bumper shock absorber urceolus 5 is gone on in conveyor 2's top, consequently can not influence conveyor 2's normal operating in the airtight detection process, conveyor 2 does not shut down the operation among the airtight detection process, and a plurality of detection station 4 can carry out the 5 airtightness detection of bumper shock absorber urceolus of difference in succession, and this design can improve the efficiency that the airtight of bumper shock absorber urceolus 5 detected, reduces enterprise bumper shock absorber processing cost.

Further, detection station 4 includes frame 41, climbing mechanism 42, pressure leaks mechanism 44 and plug 43, in detection station 4 every plug 43 with one joint position 31 one-to-one. The rack 41 is arranged on two sides of the conveying device 2, the jacking mechanism 42 and the pressure leakage mechanism 44 are both arranged on the rack 41, the jacking mechanism 42 is positioned below the conveying device 2, the pressure leakage mechanism 44 is positioned above the conveying device 2, the mandril 43 is vertically arranged on the jacking mechanism 42, and the jacking mechanism 42 drives the mandril 43 to move up and down; when the workpiece disc 3 inserted with the damper outer cylinder 5 is conveyed to the detection station 4, the core rod 43 moves upwards and extends into the damper outer cylinder 5, and the core rod 43 lifts the damper outer cylinder 5 and the workpiece disc 3 to the upper part of the conveying device 2; the pressure leakage mechanism 44 corresponds to the core rod 43, and when the damper outer cylinder 5 is lifted, the pressure leakage mechanism 44 moves downward to press the damper outer cylinder 5 and the core rod 43 together. Further, the pressure leakage mechanism 44 is a push rod motor or an air cylinder, an output end of the pressure leakage mechanism 44 is vertically arranged downwards, and a central axis of the pressure leakage mechanism 44 coincides with a central axis of the core rod 43.

More specifically, the leak detection process is as follows: after the conveying device 2 conveys the workpiece disc 3 clamped with the outer damper cylinder 5 to the detection station 4, the jacking mechanism 42 is started to work first, the jacking mechanism 42 drives the core rod 43 to move upwards, and the core rod 43 corresponds to the bottom opening of the outer damper cylinder 5 and extends into the outer damper cylinder 5. The core rod 43 and the outer damper cylinder 5 are in interference fit, so that the outer damper cylinder 5 can be lifted on one hand, and the air tightness between the core rod and the outer damper cylinder 5 is ensured on the other hand. During the process that the mandrel 43 lifts the damper outer cylinder 5, the workpiece disc 3 is driven to leave the conveying device 2. The bumper shock absorber urceolus 5 with workpiece tray 3 is lifted the back, press hourglass mechanism 44 to push down bumper shock absorber urceolus 5, it is right bumper shock absorber urceolus 5 applys decurrent effort, makes bumper shock absorber urceolus 5 with more laminate between the plug 43, prevent in airtight testing process bumper shock absorber urceolus 5 with take place gas leakage between the plug 43, lead to airtight testing result inaccurate. Further, a gas channel is arranged in the core rod 43, the core rod 43 comprises a core rod 431 and a core print 432, the core rod 431 is vertically fixed on the mounting plate 424, the core print 432 is arranged at the top of the core rod 431, a gas outlet 4322 is arranged at the top of the core print 432, and a sealing ring 4321 is arranged on the side wall of the core print 432. The seal 4321 prevents gas leakage between the core print 432 and the damper outer cylinder 5. Further, the gas flow sensor comprises a pressurizing device, the pressurizing device is communicated with the gas channel through a gas pipeline 9, and an airflow sensor 91 is installed on the gas pipeline 9. When the core print 432 and the pressure leakage mechanism 44 are moved to the right position, the pressurizing device applies a detection air pressure to the damper outer cylinder 5, wherein the detection air pressure is 500 Pa. The airflow sensor 91 is used for detecting the airflow speed on the gas pipeline 9, and if the air tightness between each part of the outer cylinder 5 of the shock absorber is not good and gas leakage occurs, the airflow sensor 91 can sense the airflow speed on the gas pipeline 9. When the air flow speed exceeds 2.5ml/min, the air tightness of the damper is judged to be poor, and the damper needs to be reprocessed. More specifically, the detection apparatus further includes a controller that controls the entire apparatus.

Further, climbing mechanism 42 includes drive arrangement 421, telescopic link 423, mounting panel 424 and guide bar 422, drive arrangement 421 fixes on frame 41, telescopic link 423 is vertical to be set up in frame 41, mounting panel 424 sets up on the telescopic link 423, drive arrangement 421 drives telescopic link 423 drives mounting panel 424 up-and-down motion, guide bar 422 is vertical to be set up in frame 41 and run through mounting panel 424, plug 43 is fixed on mounting panel 424. The driving device 421 is a motor, and the motor drives the mounting plate 424 to move up and down by driving the guide rod 422. The guide rods 422 are four, the four guide rods 422 are respectively positioned at four corners of the mounting plate 424, and the guide rods 422 guide and limit the movement of the mounting plate 424.

Furthermore, a positioning rod 7 is arranged on the frame 41, the positioning rod 7 is positioned between the conveying device 2 and the pressure leakage mechanism 44, and a positioning hole 32 corresponding to the positioning rod 7 is formed in the workpiece tray 3. The matching of the positioning rod 7 and the positioning hole 32 ensures that the workpiece disc 3 cannot move in the airtight detection process of the shock absorption outer cylinder, so that the stability of airtight detection is ensured, and the gas leakage between the core print 432 and the shock absorber outer cylinder 5 is avoided.

Further, an infrared sensor 6 for sensing the workpiece is further arranged on the detection station 4, and the infrared sensor 6 faces the conveying device 2. The infrared inductor 6 can perceive whether the workpiece disc 3 is connected with the outer damper cylinder 5 in a clamped mode, when the workpiece disc 3 is not connected with the outer damper cylinder 5 in a clamped mode, the workpiece disc 3 cannot stop when passing through the detection station 4, and the workpiece disc directly enters the downward moving processing step. More specifically, in the conveying direction of the conveying device 2, the workpiece tray 3 with the damper outer cylinder 5 clamped therein is preferentially conveyed to the detection station 4 located downstream of the conveying device 2, that is, the downstream detection station 4 performs airtight detection on the damper outer cylinder 5 first, which can ensure that the upstream detection station 4 is fully used.

Further, the detection station 4 further comprises a blocking mechanism 8, the blocking mechanism 8 comprises a blocking cylinder 81 and a baffle 82, the blocking mechanism 8 is fixed below the conveying device 2, and the blocking cylinder 81 drives the baffle 82 to move up and down in the conveying device 2. When the infrared sensor 6 senses that the workpiece disc 3 at the position is provided with the outer damper cylinder 5, the blocking cylinder 81 drives the baffle 82 to move upwards, the upward baffle 82 plays a braking role in the workpiece disc 3, the workpiece disc 3 can be accurately stopped in the detection station 4, and the detection station 4 can conveniently perform air tightness detection operation.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims

1. A pressure leak detection apparatus comprising:

main part (1), be equipped with conveyor (2) on main part (1), the activity is equipped with a plurality of by conveyor (2) driven work piece dish (3) on conveyor (2), be equipped with joint position (31) with bumper shock absorber urceolus (5) joint on work piece dish (3), its characterized in that:

along conveyor (2)'s direction of delivery, be equipped with a plurality of detection station (4) on main part (1), when work piece dish (3) that the grafting has bumper shock absorber urceolus (5) were carried detection station (4), work piece dish (3) by detection station (4) lift to conveyor (2) top carries out airtight detection.

2. The leak detection apparatus according to claim 1, wherein:

the detection station (4) comprises a rack (41), a jacking mechanism (42), a pressure leakage mechanism (44) and a core rod (43), the rack (41) is arranged on two sides of the conveying device (2), the jacking mechanism (42) and the pressure leakage mechanism (44) are arranged on the rack (41), the jacking mechanism (42) is positioned below the conveying device (2), the pressure leakage mechanism (44) is positioned above the conveying device (2), the core rod (43) is vertically arranged on the jacking mechanism (42), and the jacking mechanism (42) drives the core rod (43) to move up and down; when the workpiece disc (3) inserted with the shock absorber outer cylinder (5) is conveyed to the detection station (4), the core rod (43) moves upwards and extends into the shock absorber outer cylinder (5), and the core rod (43) lifts the shock absorber outer cylinder (5) and the workpiece disc (3) to the position above the conveying device (2); the pressure leakage mechanism (44) corresponds to the core rod (43), and when the outer damper cylinder (5) is lifted, the pressure leakage mechanism (44) moves downwards to press the outer damper cylinder (5) and the core rod (43) together.

3. The leak detection apparatus according to claim 2, wherein:

climbing mechanism (42) include drive arrangement (421), telescopic link (423), mounting panel (424) and guide bar (422), drive arrangement (421) are fixed on frame (41), telescopic link (423) vertical setting is in frame (41), mounting panel (424) set up on telescopic link (423), drive arrangement (421) drive telescopic link (423) drive mounting panel (424) up-and-down motion, guide bar (422) vertical setting is in just running through on frame (41) mounting panel (424), plug (43) are fixed on mounting panel (424).

4. The leak detection apparatus according to claim 3, wherein:

the gas channel is arranged in the core rod (43), the core rod (43) comprises a core rod (431) and a core head (432), the core rod (431) is vertically fixed on the mounting plate (424), the core head (432) is arranged at the top of the core rod (431), the top of the core head (432) is provided with a gas outlet (4322), and the side wall of the core head (432) is provided with a sealing ring (4321).

5. The leak detection apparatus according to claim 4, wherein:

still include pressure device, pressure device pass through gas pipeline (9) with gas channel intercommunication, install air current inductor (91) on gas pipeline (9).

6. The leak detection apparatus according to claim 2, wherein:

the pressure leakage mechanism (44) is a push rod motor or an air cylinder, the output end of the pressure leakage mechanism (44) is vertically arranged downwards, and the central axis of the pressure leakage mechanism (44) is coincided with the central axis of the core rod (43).

7. The leak detection apparatus according to claim 3, wherein:

the machine frame (41) is provided with a positioning rod (7), the positioning rod (7) is positioned between the conveying device (2) and the pressure leakage mechanism (44), and the workpiece disc (3) is provided with a positioning hole (32) corresponding to the positioning rod (7).

8. The leak detection apparatus according to any one of claims 2 to 7, wherein:

every be equipped with on work piece dish (3) and be no less than two joint positions (31), every in detection station (4) plug (43) and one joint position (31) one-to-one.

9. The leak detection apparatus according to any one of claims 1 to 7, wherein:

the detection station (4) is further provided with an infrared sensor (6) used for sensing a workpiece, and the infrared sensor (6) faces the conveying device (2).

10. The leak detection apparatus according to any one of claims 1 to 7, wherein:

the detection station (4) further comprises a blocking mechanism (8), the blocking mechanism (8) comprises a blocking cylinder (81) and a baffle (82), the blocking mechanism (8) is fixed below the conveying device (2), and the blocking cylinder (81) drives the baffle (82) to move up and down in the conveying device (2).