CN212807632U - Detection system of pressure test connector - Google Patents
Detection system of pressure test connector Download PDFInfo
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- CN212807632U CN212807632U CN202021938916.9U CN202021938916U CN212807632U CN 212807632 U CN212807632 U CN 212807632U CN 202021938916 U CN202021938916 U CN 202021938916U CN 212807632 U CN212807632 U CN 212807632U
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Abstract
The utility model discloses a detecting system of pressure test connector for detect opening power and the stroke of opening of pressure test connector. Arranging an air pump and a test board, wherein the test board is provided with a pressure test connector, a test piece mounting and moving mechanism, a transverse digital display caliper, a test contact and a built-in digital display push-pull dynamometer; the test piece mounting and moving mechanism is used for moving the pressure test connector, the transverse digital display caliper is used for measuring the stroke, the test contact is used for obtaining thrust, and the built-in digital display push-pull dynamometer is used for measuring the thrust, including opening force. The utility model discloses test convenient and fast, the precision is high, can satisfy the standard requirement.
Description
Technical Field
The utility model relates to a pneumatic brake system of haulage vehicle and trailer, concretely relates to detecting system of pressure test connector device.
Background
The automobile air braking system is an important guarantee for the safe running of the automobile. The good air pressure braking system can ensure that the vehicle has a good and stable deceleration process in the braking process so as to stably stop, and the air pressure braking system can ensure that the vehicle has an effective buffer in the braking process, so that the inertia of the vehicle in emergency braking is reduced, and the vehicle can better stop. The pressure test connector is used as a measuring element of the brake circuit and plays an important role in guaranteeing the air tightness of the circuit.
In standard JTT 1178.2-2019 section 2 of commercial truck safety and technical conditions: the following are explicitly proposed in the traction vehicle and trailer ]: "pressure test connectors for air brake devices should be installed in air cylinders and brake chambers of brake systems of a tractor and a trailer"; the following is explicitly proposed in the standard GB 7258 plus 2017 technical conditions for safety of motor vehicle operation: "the car, trailer using air brake, each air storage cylinder (except for the pressure display device such as manometer) and brake chamber should have the connector for testing the brake pipe pressure during design and manufacture"; the dimensional characteristics of the connectors for detecting the reaction time and pressure values of the pneumatic brake devices of automobiles and trailers are specified in the standard GB/T5922-2008 technical requirements for connectors for testing the pressure of the pneumatic brake devices of automobiles and trailers.
However, no relevant detection method is provided for the dimensional characteristics of the pressure test connector at present, and no relevant mature detection equipment is provided on the market for detecting the reliability of the pressure test connector.
SUMMERY OF THE UTILITY MODEL
To this, the utility model provides a detecting system of pressure test connector solves the relevant problem that detects of size characteristic of pressure test connector and do not have available equipment and concrete detection method, provides the guarantee for car air braking system's safety.
The utility model adopts the following technical scheme: a detection system of a pressure test connector is provided with an air pump and a test board;
the test bench is provided with a pressure test connector, a test piece mounting and moving mechanism, a transverse digital display caliper, a test contact and a built-in digital display push-pull dynamometer;
the pressure test connector and the transverse digital caliper are installed on the test piece installation moving mechanism in a synchronous moving mode;
the pressure test connector is supplied with air by the air pump;
the pressure test connector touches the test contact when moving and applies thrust to the test contact, and the built-in digital display push-pull dynamometer is connected with the test contact to measure the thrust.
And the thrust measured when the pressure test connector initially touches the test contact is the opening force of the pressure test connector, and the stroke of the transverse digital caliper measured when the thrust is not changed is the opening stroke of the pressure test connector.
The test piece mounting and moving mechanism comprises a sliding cover plate, the sliding cover plate floats on the test board, and the sliding cover plate is connected with the transverse digital caliper; the sliding cover plate is fixed with the pressure test connector, the air inlet end of the pressure test connector is connected with a quick-insertion type pipe joint, and the quick-insertion type pipe joint takes air from the air pump through an air pipe.
The test piece mounting and moving mechanism comprises a moving mechanism, the moving mechanism comprises a screw rod, one end of the screw rod is connected with a hand wheel, a pushing block is sleeved on the screw rod and connected with a sliding block, the sliding block is sleeved on a linear shaft, and the top of the sliding block is connected with the sliding cover plate.
The test board is provided with a groove, and the sliding block drives the sliding cover plate to slide along the groove.
The test contact is a three-way joint, one joint is opposite to the air outlet end of the pressure test connector, the other joint is connected with a pressure gauge through an air pipe, and the other joint is connected with a built-in digital display push-pull force gauge.
The pressure test connector is in airtight contact with the test contact.
Compared with the prior art, the beneficial effects of the utility model are embodied in: (1) the test process is convenient and fast, the operation is simple, the tested pressure test connector is fixed on the test board, test data can be directly obtained through the push-pull dynamometer and the digital display caliper, and the assembly and disassembly are convenient. (2) The precision is high: the precision of the digital display caliper is 0.1mm, the precision of the push-pull dynamometer is 0.1N, and the precision is higher than the precision required by national standards.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
FIG. 1 is a schematic diagram of the overall structure of the system of the present invention;
FIG. 2 is a schematic top view of the system;
FIG. 3 is a schematic view of a moving mechanism inside a testing table;
fig. 4 is a partial bottom view of the moving mechanism of fig. 3.
1-an air pump, 2-a pressure reducing valve, 3-a throttle valve, 4-an air pipe, 5-a test bench, 6-a transverse digital display caliper, 7-a test contact, 8-a built-in digital display push-pull dynamometer, 9-a pressure gauge, 10-a sliding cover plate, 11-a fixed seat, 12-a pressure test connector, 13-a quick-insertion type pipe joint, 14-a screw rod, 15-a hand wheel, 16-a bearing assembly, 17-a pushing block, 18-a sliding block, 19-a linear shaft, 20-a shaft supporting seat and 21-a connecting plate.
Detailed Description
The invention is described in detail below with reference to the drawings, which form a part hereof, and with reference to embodiments of the invention. However, it should be understood by those skilled in the art that the following examples are not intended to limit the technical solutions of the present invention, and all equivalent changes or modifications made in the spirit of the technical solutions of the present invention should be considered as falling within the protection scope of the present invention.
Introduction to detection System
The detection system is mainly composed of a gas distribution part, an air pressure measurement part, a thrust measurement part and a displacement measurement part in terms of functions. The structure is shown in fig. 1 and 2, and comprises:
(1) the air pump 1 is provided with a pressure reducing valve 2 and a throttle valve 3, and further the pressure reducing valve 2 and the throttle valve 3 are respectively a pressure-resistant pressure reducing valve and a universal throttle valve. The air pump 1 is connected with an air pipe 4 on an air outlet through a pressure reducing valve 2 and a throttle valve 3, and the air pipe 4 is connected to a test bench 5.
(2) The device comprises a test bench 5, wherein a test piece mounting and moving mechanism, a transverse digital display caliper 6, a test contact 7, a built-in digital display push-pull dynamometer 8 and a pressure gauge 9 are arranged on the test bench 5.
The test piece mounting and moving mechanism comprises a sliding cover plate 10, and a fixed seat 11 is mounted on the sliding cover plate 10; the fixing seat 11 is used for fixing the pressure test connector 12 and the quick-insertion type pipe joint 13, the pressure test connector 12 is a test piece, the air inlet end of the pressure test connector 12 is connected with the quick-insertion type pipe joint 13, and the quick-insertion type pipe joint 13 is connected with the air pipe 4 and used for taking air from the air distribution pump 1. The sliding cover plate 10 floats on the upper surface of the test board 5, a moving mechanism is arranged in the test board, the bottom of the sliding cover plate 10 is connected to the moving mechanism, a groove is formed in the test board, and the moving mechanism can drive the sliding cover plate 10 to slide. As shown in fig. 3 and 4, the moving mechanism includes a screw 14, one end of the screw is connected with a hand wheel 15, the hand wheel is installed on the side of the test bench 5, and the hand wheel can rock the screw 14 to rotate; the screw 14 is supported by a bearing assembly 16. A pushing block 17 is sleeved on the screw 14, the two sides of the pushing block 17 are symmetrically connected with sliding blocks 18, the two sliding blocks 18 are respectively sleeved on a linear shaft 19, the two linear shafts 19 are supported by a shaft supporting seat 20, and the two linear shafts are parallel to the screw. The two sliding blocks 18 are equal in height, and the top surfaces horizontally support the sliding cover plate 10; further, to adjust the levelness, a spring pad may be provided on the top surface of the slider 18. When the hand wheel 15 shakes the screw 14 to rotate, the pushing block 17 on the screw moves to drive the sliding block 18 to move along the linear shaft 19, the sliding block 18 penetrates through the groove on the test board to drive the sliding cover plate 10 to move along the groove, and the pressure test connector 12 and the quick-insertion type pipe joint 13 are installed on the sliding cover plate 10, so that the pressure test connector 12 and the quick-insertion type pipe joint 13 move together. The side part of the sliding cover plate 10 is connected with a connecting plate 21, the connecting plate 21 is simultaneously connected with the moving end of the horizontal digital caliper 6, and when the sliding cover plate 10 moves, the connecting plate 21 drives the moving end of the horizontal digital caliper 6 to move so as to measure the moving distance.
The test contact 7 is arranged on the built-in digital display push-pull dynamometer 8, the test contact 7 is a three-way joint, one joint is opposite to the air outlet end of the pressure test connector 12, the pressure test connector 12 and the air outlet end can be mutually inserted when moving forwards to conduct air, and the test contact 7 and the pressure test connector 12 are always kept in airtight contact; the other joint of the test contact 7 is connected with a pressure gauge 9 through an air pipe and is used for measuring the pressure of the passing gas; the test contact 7 is connected with a built-in digital display push-pull dynamometer 8 through another joint, and the built-in digital display push-pull dynamometer is used for measuring the pushing force given to the test contact 7 by the pressure test connector 12.
Second, introduction of detection method
(1) Firstly, connecting a gas circuit, checking the safety and the normality of a gas circuit instrument and the like, and installing a pressure test connector 12 to be tested on a quick-insertion type pipe joint 13 and fixing the pressure test connector by using a fixing seat 11.
(2) Opening an air pump 1 to supply air, and adjusting a pressure reducing valve 2 and a throttle valve 3 at the outlet of the air pump to enable the pressure to be 1 MPa; the gas flows into the quick-inserting pipe joint 13 and the pressure test connector 12 through the gas pipe 4; the end cap at the outlet end of the pressure test connector 12 is opened and gas flows out of the pressure test connector 12.
(3) Rotating the hand wheel 15 to make the pressure test connector 12 approach the test contact 7, and recording the reading on the built-in digital display push-pull force meter 8 when the pressure test connector 12 contacts the test contact 7 and the 'push-pull' leakage sound is obviously heard at the contact, wherein the reading is the opening force; at this time, the horizontal digital caliper 6 is reset for the next measurement of the opening stroke.
(4) And continuing to rotate the hand wheel 15, so that the pressure test connector 12 continues to push the test contact 7, observing the change of the reading on the transverse digital display caliper 6 and the swinging condition of the pointer of the pressure gauge 9, and if the swinging condition indicates that air is exhausted, the operation is normal.
(5) When the reading on the built-in digital display push-pull dynamometer 8 does not change any more, the hand wheel 15 stops rotating, the reading on the horizontal digital display caliper 6 at the moment is recorded, and whether the piece to be tested is qualified or not is judged by comparing the reading with the specified stroke required by the standard.
(6) After the test is finished, the hand wheel is reversed, the test piece is separated from contact, the test piece is detached, and the test is finished.
The test bench of the detection system is a sheet metal box body with the length of 610mm, the width of 300mm, the height of 216mm and the weight of 10kg, the weight of the air pump is 10kg, the air pressure is 1.2MPa, the detection system is firm and durable, and the test process is convenient and rapid. The system is applicable to either type a or type B pressure test connectors. Now, the system is applied to carry out the dimension characteristic detection specified in GB/T5922-: towing vehicle and trailer.
Claims (7)
1. A test system for a pressure test connector, comprising: an air pump and a test bench are arranged,
the test bench is provided with a pressure test connector, a test piece mounting and moving mechanism, a transverse digital display caliper, a test contact and a built-in digital display push-pull dynamometer;
the pressure test connector and the transverse digital caliper are installed on the test piece installation moving mechanism in a synchronous moving mode;
the pressure test connector is supplied with air by the air pump;
the pressure test connector touches the test contact when moving and applies thrust to the test contact, and the built-in digital display push-pull dynamometer is connected with the test contact to measure the thrust.
2. The system for testing a pressure test connector of claim 1, wherein: and the thrust measured when the pressure test connector initially touches the test contact is the opening force of the pressure test connector, and the stroke of the transverse digital caliper measured when the thrust is not changed is the opening stroke of the pressure test connector.
3. The system for testing a pressure test connector of claim 1, wherein: the test piece mounting and moving mechanism comprises a sliding cover plate, the sliding cover plate floats on the test board, and the sliding cover plate is connected with the transverse digital caliper;
the sliding cover plate is fixed with the pressure test connector, the air inlet end of the pressure test connector is connected with a quick-insertion type pipe joint, and the quick-insertion type pipe joint takes air from the air pump through an air pipe.
4. The system for testing a pressure test connector of claim 3, wherein: the test piece mounting and moving mechanism comprises a moving mechanism, the moving mechanism comprises a screw rod, one end of the screw rod is connected with a hand wheel, a pushing block is sleeved on the screw rod and connected with a sliding block, the sliding block is sleeved on a linear shaft, and the top of the sliding block is connected with the sliding cover plate.
5. The system for testing a pressure test connector of claim 4, wherein: the test board is provided with a groove, and the sliding block drives the sliding cover plate to slide along the groove.
6. The system for testing a pressure test connector of claim 1, wherein: the test contact is a three-way joint, one joint is opposite to the air outlet end of the pressure test connector, the other joint is connected with a pressure gauge through an air pipe, and the other joint is connected with a built-in digital display push-pull force gauge.
7. The system for testing a pressure test connector of claim 1, wherein: the pressure test connector is in airtight contact with the test contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938916.9U CN212807632U (en) | 2020-09-08 | 2020-09-08 | Detection system of pressure test connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938916.9U CN212807632U (en) | 2020-09-08 | 2020-09-08 | Detection system of pressure test connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212807632U true CN212807632U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021938916.9U Active CN212807632U (en) | 2020-09-08 | 2020-09-08 | Detection system of pressure test connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212807632U (en) |
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2020
- 2020-09-08 CN CN202021938916.9U patent/CN212807632U/en active Active
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