Automobile fluid pipeline tightness detection device

Abstract

The present invention relates to the field of automobile air conditioning, and in particular to an automobile fluid pipeline tightness detection device, which has a bottom plate, and is characterized in that a front-end bearing bracket, a pipeline bearing bracket and a rear-end bearing bracket are sequentially arranged on the bottom plate, and a first pressure detection tube connected to an external air source is arranged on the front-end bearing bracket, and the first pressure detection tube is connected to one end of the main road of the pipeline to be tested through a first sleeve; a pipeline fixing frame and a locking device for preventing the pipeline to be tested from sliding are arranged on the pipeline bearing bracket; a second pressure detection tube connected to a branch of the pipeline to be tested is arranged on the rear-end bearing bracket, and a third pressure detection tube connected to an external air source is also arranged, and the third pressure detection tube is connected to the other end of the main road of the pipeline to be tested through a second sleeve. The present invention can effectively clamp the pipeline to be tested by using a new design, and it is not easy to fall off. In some pipelines to be tested with blocked ends, the present invention can also detect whether the internal sealing is good, and there will be no missed detection.

Description

Technical Field

[0001] The invention relates to the field of automobile air conditioners, and in particular to a device for detecting the tightness of automobile fluid pipelines. Background Art

[0002] Automobile fluid pipelines generally need to be tested for tightness before assembly. The traditional testing method is to manually put the two ends of the pipeline to be tested on an air pump for pressure testing.

[0003] On the one hand, the clamping force of this test method is insufficient, and air leakage often occurs. On the other hand, if the inner end of the pipeline to be tested is blocked, it can only detect whether the airtightness of one side of the blockage is good, and it is impossible to detect the airtightness of the entire pipeline to be tested. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides an automobile fluid pipeline tightness detection device which has a strong clamping force and can effectively detect whether the inside of the pipeline to be tested is well-sealed.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] The automobile fluid pipeline tightness detection device has a bottom plate, characterized in that the bottom plate is sequentially provided with a front-end bearing bracket, a pipeline bearing bracket and a rear-end bearing bracket, the front-end bearing bracket is provided with a first guide rail and a first frame plate that can move freely along the first guide rail, the first frame plate is provided with a first pressure detection tube that is connected to an external air source, and the first pressure detection tube is connected to one end of the main line of the pipeline to be tested through a first sleeve;

[0007] The pipeline bearing bracket is provided with a pipeline fixing frame and a locking device to prevent the pipeline to be tested from sliding;

[0008] The rear end supporting bracket is provided with a second track and a second frame plate which can move freely along the second track; the second frame plate is provided with a second pressure detection tube which is connected with a branch of the pipeline to be tested; the second frame plate is also provided with a third pressure detection tube which is connected with an external gas source; the third pressure detection tube is connected with the other end of the main line of the pipeline to be tested through a second sleeve.

[0009] Furthermore, the first frame plate and the second frame plate are both provided with a holding mechanism, and the holding mechanism includes a first driving device and a holding frame fixed in parallel on the first frame plate and / or the second frame plate, a cover plate is fixed on the top of the first driving device, and the bottom of the other side of the cover plate is abutted against the top of the holding frame, and a sleeve channel for clamping the first sleeve and / or the second sleeve is opened at the bottom of the cover plate and the top of the holding frame.

[0010] Furthermore, a second driving device is provided on the side of the first driving device or the retaining frame, and a rear end of the second driving device is fixedly connected to the rear end of the first pressure detection tube and / or the third pressure detection tube through a connecting plate.

[0011] Furthermore, the locking device includes a lifting cylinder arranged above the pipeline supporting bracket, a hinge plate is provided on the top side of the lifting cylinder, the other end of the hinge plate is connected to a support rod, one end of the support rod is hinged to the lifting end of the lifting cylinder, and a pad is provided at the bottom of the other end of the support rod for supporting the pipeline to be tested.

[0012] Furthermore, the locking devices include at least two, which respectively lock two sides of the pipeline to be tested.

[0013] Furthermore, the first frame plate and the second frame plate are also provided with a fastening device, the fastening device comprises a base plate, a push-in cylinder is provided at the rear end of the base plate, two guide pins are provided at the front end of the base plate, rotatable relative clamping claws are sleeved on the guide pins, protrusions are provided on the upper side surfaces of the clamping claws, springs are provided between the protrusions, and rollers are provided at the rear end of the clamping claws;

[0014] A wedge block is fixed at the front end of the jacking cylinder, and grooves are arranged on both sides of the wedge block, and the grooves match the rollers.

[0015] Furthermore, the ends of the first sleeve and the second sleeve are provided with hoops, the sides of the hoops are provided with protrusions, and the protrusions cooperate with the claws.

[0016] Therefore, the technical means adopted by the present invention has the following beneficial effects compared with the traditional technical means:

[0017] The present invention can effectively clamp the pipeline to be tested by utilizing a new design, and it is not easy to fall off. For some pipelines to be tested with blocked ends, the present invention can also detect whether the internal sealing is good, and there will be no missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the front end bearing support part of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the pipeline support bracket part of the present invention;

[0022] Figure 4It is a schematic diagram of the three-dimensional structure of the rear end bearing support part of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the locking device of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the fastening device of the present invention;

[0025] Figure 7 It is a schematic diagram of the working principle of the clamping claw and the hoop sleeve of the present invention.

[0026] in:

[0027] 1. Bottom plate, 2. front end bearing bracket, 3. pipeline bearing bracket, 4. rear end bearing bracket, 5. first guide rail, 6. first frame plate, 7. first pressure detection tube, 8. first sleeve, 9. locking device, 10. second guide rail, 11. second frame plate, 12. second pressure detection tube, 13. third pressure detection tube, 14. second sleeve, 15. holding mechanism, 16. first driving device, 17. holding frame, 18. cover plate, 19. sleeve channel, 20. second driving device, 21. connecting plate, 22. lifting cylinder, 23. hinge plate, 24. support rod, 25. pad, 26. fastening device, 27. base plate, 28. jacking cylinder, 29. guide pin, 30. claw, 31. bump, 32. spring, 33. roller, 34. wedge block, 35. groove, 36. hoop, 37. protrusion. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in the understanding of the embodiments of the present invention as defined by the claims. It includes various specific details to assist in understanding, but they are to be viewed as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, in order to make the description more clear and concise, detailed descriptions of functions and configurations well known in the art will be omitted.

[0029] The present invention will be further described with reference to the following drawings:

[0030] refer to Figure 1-4 The automobile fluid pipeline tightness detection device has a bottom plate 1, characterized in that a front end bearing bracket 2, a pipeline bearing bracket 3 and a rear end bearing bracket 4 are sequentially arranged on the bottom plate 1, a first guide rail 5 and a first frame plate 6 that can move freely along the first guide rail 5 are arranged on the front end bearing bracket 2, a first pressure detection tube 7 that communicates with an external air source is arranged on the first frame plate 6, and the first pressure detection tube 7 is communicated with one end of the main line of the pipeline to be tested through a first sleeve 8;

[0031] The pipeline support bracket 3 is provided with a pipeline fixing frame and a locking device 9 for preventing the pipeline to be tested from sliding;

[0032] A second track and a second frame plate 11 that can move freely along the second track are provided on the rear end supporting bracket 4. A second pressure detection tube 12 connected to a branch of the pipeline to be tested is provided on the second frame plate 11. A third pressure detection tube 13 connected to an external air source is also provided on the second frame plate 11. The third pressure detection tube 13 is connected to the other end of the main line of the pipeline to be tested through a second sleeve 14.

[0033] In the above-mentioned automobile fluid pipeline tightness detection device, the pipeline to be tested is installed on the pipeline supporting bracket 3, and the first, second and third pressure detection tubes 13 on the front supporting bracket 2 and the rear supporting bracket 4 are respectively used to block the main line ends and branch ends of the pipeline to be tested, and air is injected into the pipeline to be tested through an external air source to detect whether its pressure meets the standard, so as to test whether the airtightness of the pipeline to be tested is good.

[0034] In some special cases, when one or both ends of the main pipeline to be tested are blocked by foreign matter, it will be impossible to detect whether the inside of the pipeline is airtight during pressure detection. In this case, a second pressure detection tube 12 is provided, which is directly connected to the inside of the pipeline to be tested, to prevent the above situation from occurring.

[0035] At the same time, a track is provided at the bottom of the first frame plate 6 and the second frame plate 11, which means that the first frame plate 6 or the second frame plate 11 can move along the track. During the movement, the first frame plate 6 and the second frame plate 11 can slide by means of sliders or pulleys at the bottom thereof, so as to facilitate the adjustment of the relative positions of the front-end bearing bracket 2 and the rear-end bearing bracket 4.

[0036] The first frame plate 6 and the second frame plate 11 are both provided with a retaining mechanism 15, and the retaining mechanism 15 is provided to fix the first sleeve 8 and the second sleeve 14 to prevent them from falling off. On the other hand, the retaining mechanism 15 also has installation space for the first and third pressure detection tubes 13.

[0037] refer to Figure 5 The holding mechanism 15 includes a first driving device 16 and a holding frame 17 fixed in parallel on the first frame plate 6 and the second frame plate 11. A cover plate 18 is fixed on the top of the first driving device 16. The bottom of the other side of the cover plate 18 abuts against the top of the holding frame 17. The bottom of the cover plate 18 and the top of the holding frame 17 are provided with a sleeve channel 19 for clamping the first sleeve 8 and / or the second sleeve 14.

[0038] A second driving device is disposed on the side of the first driving device 16 or the retaining frame 17 , and a rear end of the second driving device is fixedly connected to the rear ends of the first pressure detection tube 7 and the third pressure detection tube 13 via a connecting plate 21 .

[0039] Take the holding mechanism 15 on the second frame plate 11 as an example, refer to the attached Figure 5 The first driving device 16 of the holding mechanism 15 and the bottom of the retaining frame 17 are both mounted on an inclined block on the second frame plate 11, and are kept parallel and parallel. A cover plate 18 is provided on the top of the retaining mechanism 15. One end of the cover plate 18 is fixedly connected to the telescopic end of the first driving device 16, and the other end is matched with the top of the retaining frame 17. The top of the retaining frame 17 and the bottom of the cover plate 18 are both provided with a half-circular opening, which is the mounting hole of the second sleeve 14 when combined, and can adapt to the second sleeve 14 of various apertures and clamp it to prevent it from slipping. The first driving device 16 here can be a driving cylinder, or a driving structure such as a motor.

[0040] Similarly, the working mechanism of the holding mechanism 15 on the first frame plate 6 is consistent with the holding mechanism 15 on the second frame plate 11, and will not be described in detail.

[0041] refer to Figure 3 The locking device 9 has two parts, which respectively lock the two sides of the pipeline to be tested.

[0042] The locking device 9 includes a lifting cylinder 22 arranged above the pipeline supporting bracket 3, a hinge plate 23 is provided on the top side of the lifting cylinder 22, the other end of the hinge plate 23 is connected to a support rod 24, one end of the support rod 24 is hinged to the lifting end of the lifting cylinder 22, and a pad 25 is provided at the bottom of the other end of the support rod 24 to support the pipeline to be tested.

[0043] In the locking device 9, the middle of the support rod 24 is rotatably mounted on one end of the hinge plate 23, one end of the support rod 24 is hinged to the lifting end of the lifting cylinder 22, and a cushion block 25 is fixed at the bottom of the other end to press the pipeline to be tested. The pipeline to be tested is fixed by the lever principle. The cushion block 25 is replaceable, and cushion blocks 25 with different bottom surfaces can be designed according to different shapes of the pipeline to be tested, which is not easy to damage the pipeline on the one hand, and also convenient to prevent management wandering on the other hand.

[0044] refer to Figure 6 The first frame plate 6 and the second frame plate 11 are also provided with a fastening device 26, which includes a base plate 27, a push-in cylinder 28 is provided at the rear end of the base plate 27, and two guide pins 29 are provided at the front end of the base plate 27. The guide pins 29 are sleeved with rotatable relative claws, and the upper side of the claws is provided with a protrusion 31, a spring 32 is provided between the protrusions 31, and a roller 33 is provided at the rear end of the claws;

[0045] A wedge block 34 is fixed to the front end of the jacking cylinder 28 , and grooves 35 are provided on both sides of the wedge block 34 , and the grooves 35 match the rollers 33 .

[0046] Taking the fastening device 26 on the first frame plate 6 as an example, the fastening device 26 is installed on the third track below, and the third track is installed on the first frame plate 6 for easy movement, and is driven to move by the rear end driving cylinder. A slider that matches the third track is provided at the bottom of the base plate 27.

[0047] The base plate 27 is provided with two claws which are independent of each other. The claws are rotatably arranged on the same side of the base plate 27 and are arranged at the same distance from the first sleeve 8. The front end of the claw is bent inward and narrowed, and the rear end of the claw is provided with a relative roller 33, which matches the side groove 35 of the wedge block 34 at the front end of the push cylinder 28. The wedge block 34 is pushed in the direction of the claw under the action of the push cylinder 28, thereby forcing the front end of the claw to close, thereby clamping the first sleeve 8.

[0048] A spring 32 is also provided on the side of the rear end of the clamp to separate the front ends of the two clamping claws. When the push cylinder 28 retracts, the spring 32 naturally retracts, thereby forcing the front ends of the clamping claws to open and then disengage from the first sleeve 8.

[0049] The working principle of the fastening device 26 on the second frame plate 11 is consistent with that of the fastening device 26 on the first frame plate 6, and will not be described in detail.

[0050] refer to Figure 7 A hoop 36 is provided at the end of the first sleeve 8 and the second sleeve 14, and a protrusion 37 is provided on the side of the hoop 36, and the protrusion 37 cooperates with the claw.

[0051] The protrusion 37 matches the front end of the claw. When the claw is driven by the driving cylinder to move toward the first sleeve 8, the end of the claw will push the protrusion 37 to the other side of the first sleeve 8. Conversely, when the claw is pulled back by the driving cylinder, the protrusion 37 will also be pulled back, thereby driving the opening and contraction of the hoop 36 to further tighten the first sleeve 8.

[0052] The working principle of the hoop 36 on the second sleeve 14 is consistent with that of the hoop 36 of the first sleeve 8, and will not be described in detail.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for detecting the tightness of a fluid pipeline in an automobile, having a bottom plate, characterized in that: The bottom plate is provided with a front-end bearing bracket, a pipeline bearing bracket and a rear-end bearing bracket in sequence, the front-end bearing bracket is provided with a first guide rail and a first frame plate that can move freely along the first guide rail, the first frame plate is provided with a first pressure detection tube that is connected to an external air source, and the first pressure detection tube is connected to one end of the main line of the pipeline to be tested through a first sleeve; The pipeline bearing bracket is provided with a pipeline fixing frame and a locking device to prevent the pipeline to be tested from sliding; The rear end bearing bracket is provided with a second track and a second frame plate that can move freely along the second track, the second frame plate is provided with a second pressure detection tube that is in communication with a branch of the pipeline to be tested, and the second frame plate is also provided with a third pressure detection tube that is in communication with an external gas source, and the third pressure detection tube is in communication with the other end of the main line of the pipeline to be tested through a second sleeve; The first frame plate and the second frame plate are both provided with a holding mechanism, and the holding mechanism includes a first driving device and a holding frame fixed in parallel on the first frame plate and / or the second frame plate, a cover plate is fixed on the top of the first driving device, the bottom of the other side of the cover plate abuts against the top of the holding frame, and a sleeve channel for clamping the first sleeve and / or the second sleeve is opened at the bottom of the cover plate and the top of the holding frame; A second driving device is provided on the side of the first driving device or the retaining frame, and a rear end of the second driving device is fixedly connected to the rear end of the first pressure detection tube and / or the third pressure detection tube through a connecting plate; The locking device includes a lifting cylinder arranged above the pipeline supporting bracket, a hinge plate is provided on the top side of the lifting cylinder, the other end of the hinge plate is connected to a support rod, one end of the support rod is hinged to the lifting end of the lifting cylinder, and a pad is provided at the bottom of the other end of the support rod that can support the pipeline to be tested.

2. The automobile fluid pipeline tightness detection device according to claim 1, characterized in that: There are at least two locking devices, which respectively lock the two sides of the pipeline to be tested.

3. The automobile fluid pipeline tightness detection device according to claim 1, characterized in that: The first frame plate and the second frame plate are also provided with a fastening device, the fastening device includes a base plate, a push-in cylinder is provided at the rear end of the base plate, two guide pins are provided at the front end of the base plate, rotatable relative clamping claws are sleeved on the guide pins, protrusions are provided on the upper side of the clamping claws, springs are provided between the protrusions, and rollers are provided at the rear end of the clamping claws; A wedge block is fixed at the front end of the jacking cylinder, and grooves are arranged on both sides of the wedge block, and the grooves match the rollers.

4. The automobile fluid pipeline tightness detection device according to claim 3, characterized in that: The ends of the first sleeve and the second sleeve are provided with hoops, the sides of the hoops are provided with protrusions, and the protrusions are matched with the claws.

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