Airtightness detection equipment for automobile air conditioner pipeline

Abstract

The utility model discloses an air tightness detection device for an automobile air conditioner pipeline, which belongs to the technical field of automobile part detection and comprises a body, a fixing plate, a groove, a connecting rod and a sliding frame. The placing plate is arranged at the top of the fixing plate, a first supporting column is arranged at the middle section position of the top of the placing plate, second supporting columns are arranged at the two ends of the placing plate, clamping mechanisms used for fixing the two ends of the air conditioner pipeline are arranged on the second supporting columns, and the two ends of the air conditioner pipeline are clamped and fixed through first rolling wheels and second rolling wheels arranged on the clamping mechanisms; the air conditioner pipeline can be kept stable in the process of being aligned by the pressure control system, deviation of the pipeline is reduced, the stability of air tightness detection is ensured, the clamping mechanism can act on the two ends of the pipeline at the same time, and uniform clamping force is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts detection, in particular to an airtight detection device for an automobile air-conditioning pipeline. Background Technique

[0002] The automobile air-conditioning pipeline refers to the pipeline system connecting the main components (such as compressors, evaporators, condensers, and expansion valves) in the automobile air-conditioning system, and is an important and indispensable part of the automobile air-conditioning system. It mainly consists of two parts: a high-pressure pipeline and a low-pressure pipeline, which are responsible for circulating the refrigerant in the system to achieve the cooling and drying of the air inside the automobile. The airtight detection device for the automobile air-conditioning pipeline is a special device dedicated to detecting the airtightness of the automobile air-conditioning pipeline system. It conducts pressure tests and leakage detections on the pipeline system by simulating actual working conditions, thereby evaluating the sealing performance of the pipeline system.

[0003] During the test, first, the pipeline system is connected to the device, and a certain pressure is applied to the pipeline system through the pressure control system. Then, the leakage detection system starts to monitor the pressure changes inside the pipeline system in real time and transmits the data to the control system for analysis. If there is a leak in the pipeline system, the leakage detection system will issue an alarm in a timely manner and display the leakage location and leakage amount. Generally, the pressure control system is aligned with both ends of the air-conditioning pipeline through the telescopic movement of the cylinder for airtight operation. Since the automobile air-conditioning pipeline is usually designed as a complex special-shaped pipe to adapt to the internal space layout and air flow requirements of the automobile. These complex shapes make it difficult to fully and accurately match during docking, and it is easy to cause offset. The pipeline offset will cause the pressure control system to be unable to accurately perform airtight operation on both ends of the pipeline, thereby affecting the result of the airtightness detection. Content of the Utility Model

[0004] The purpose of the utility model is to provide an airtight detection device for an automobile air-conditioning pipeline to solve the problems raised in the above background technique.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An airtight detection device for an automobile air-conditioning pipeline, comprising:

[0007] A main body, a fixing plate, a groove, a connecting rod, and a sliding frame;

[0008] A placing plate, the placing plate is arranged on the top of the fixing plate, a first support column is arranged at the middle position of the top of the placing plate, and second support columns are arranged at both ends of the placing plate. A clamping mechanism for fixing both ends of the air-conditioning pipeline is arranged on the second support columns.

[0009] Preferably, a groove is formed in the body, the fixing plate is located in the groove, the sliding frame is arranged at both ends of the fixing plate and fixedly connected to the fixing plate, and the sliding frame slides on a connecting rod arranged on the body.

[0010] Preferably, a notch is formed at the top end of the first support column, and the notch is arc-shaped.

[0011] Preferably, the clamping mechanism includes connecting grooves symmetrically formed on the second support column.

[0012] Preferably, rotating shafts are arranged in the connecting grooves, and torsion springs are symmetrically sleeved on the outer surfaces of the rotating shafts.

[0013] Preferably, connecting rods limited by the torsion springs are arranged on the outer surfaces of the rotating shafts, and roller ones are arranged at the ends of the connecting rods far away from the rotating shafts, and the roller ones are rotatably connected to the connecting rods.

[0014] Preferably, the clamping mechanism further includes a limiting hole, and the limiting hole (4) is formed in the middle of the top end of the second support column.

[0015] Preferably, an elastic member is arranged in the limiting hole, and one end of the elastic member is connected with a fixing member.

[0016] Preferably, the outer surface of the fixing member slides in the limiting hole and is adapted to the size of the limiting hole, and a roller two is arranged at the end of the fixing member far away from the elastic member.

[0017] Preferably, the roller two is rotatably connected to the fixing member, and rubber strips for increasing friction are arranged on the outer surfaces of both the roller two and the roller one.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] By clamping and fixing both ends of the air-conditioning pipeline through the roller one and the roller two arranged on the clamping mechanism, it can ensure that the air-conditioning pipeline remains stable during the process of being aligned by the pressure control system, reduce the offset of the pipeline, ensure the stability of the airtightness detection, and the clamping mechanism can act on both ends of the pipeline simultaneously to provide uniform clamping force, which helps to avoid deformation or damage of the pipeline due to uneven force during the test and ensure the reliability of the test results.

[0020] Through the elastic member in the limiting hole driving the roller two on the fixing member to move in the vertical direction, it can ensure that the clamping mechanism can adapt to the clamping and fixing of air-conditioning pipelines of different sizes. Regardless of the size of the pipeline, the roller two can move in the vertical direction through the action of the elastic member to closely fit the surface of the pipeline, ensuring the stability and airtightness of the clamping. Brief Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the top mechanism of the placement plate of the present utility model;

[0024] Figure 3 It is a schematic diagram of the clamping mechanism of the present utility model;

[0025] Figure 4 It is a schematic diagram of the central cross-section of the clamping mechanism of the present utility model.

[0026] Explanation of figure numbers: 1. Body; 101. Fixed plate; 102. Groove; 103. Connecting rod; 104. Sliding frame; 2. Placement plate; 201. First support pillar; 202. Notch; 3. Second support pillar; 301. Connecting groove; 302. Rotating shaft; 303. Torsion spring; 304. Link rod; 305. First roller; 4. Limit hole; 401. Elastic member; 402. Fixed member; 403. Second roller. Specific embodiments

[0027] The present utility model will be further described in detail below with reference to the drawings.

[0028] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0029] Those skilled in the art should understand that in the disclosure of the present utility model, the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position relationship shown in the drawings. It is only for the convenience of simplifying the description of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations to the present utility model.

[0030] It will be understood that the term "a" should be construed as "at least one" or "one or more". That is, in one embodiment, the number of an element may be one, while in other embodiments, the number of the element may be multiple. The term "a" should not be construed as a limitation on the quantity. Embodiment

[0031] Please refer to Figures 1-4 , an airtight detection device for an automotive air-conditioning pipeline, comprising: a main body 1, a fixing plate 101, a groove 102, a connecting rod 103 and a sliding frame 104;

[0032] A placing plate 2 is arranged on the top of the fixing plate 101. A first support column 201 is arranged at the middle position of the top of the placing plate 2. Second support columns 3 are arranged at both ends of the placing plate 2. A clamping mechanism for fixing both ends of the air-conditioning pipeline is arranged on the second support columns 3. The two ends of the air-conditioning pipeline are clamped and fixed by a first roller 305 and a second roller 403 arranged on the clamping mechanism, which can ensure that the air-conditioning pipeline remains stable during the process of being aligned by the pressure control system, reduce the offset of the pipeline, and ensure the stability of the airtight detection. The clamping mechanism can act on both ends of the pipeline simultaneously to provide uniform clamping force.

[0033] Among them, the groove 102 is formed on the main body 1. The fixing plate 101 is located in the groove 102. The sliding frame 104 is arranged at both ends of the fixing plate 101 and fixedly connected to the fixing plate 101. The sliding frame 104 slides on the connecting rod 103 arranged on the main body 1. A cylinder is arranged inside the connecting rod 103. Through the up-and-down movement of the cylinder, the fixing plate 101 fixedly connected to the bottom of the sliding frame 104 moves towards the bottom of the groove 102, and the water in the groove 102 gradually covers the air-conditioning pipeline above the fixing plate 101 for airtight detection.

[0034] It should be noted that a notch 202 is formed at the top end of the first support column 201. The notch 202 is arc-shaped. The air-conditioning pipeline is placed on the noted notch 202 to support and fix the bent portion of the air-conditioning pipeline. The bent portion of the air-conditioning pipeline is often fragile and has an irregular shape, making it difficult to be stably fixed. By placing the bent portion on the arc-shaped notch 202, it can ensure that the pipeline is evenly supported, thereby improving its stability.

[0035] Further, the clamping mechanism includes a connecting groove 301, which is symmetrically arranged on the pillar 201. A rotating shaft 302 is arranged in each of the connecting grooves 301, and a torsion spring 303 is symmetrically sleeved on the outer surface of the rotating shaft 302, wherein a connecting rod 304 limited by the torsion spring 303 is arranged on the outer surface of the rotating shaft 302, and a roller 1 305 is arranged at one end of the connecting rod 304 away from the rotating shaft 302, and the roller 1 305 is rotatably connected with the connecting rod 304. When the air conditioning oil pipe is placed on the notch 202 of the pillar 1 201, the pipe openings at both ends of the air conditioning pipeline squeeze the roller 1 305, causing the torsion spring 303 to deform, and the connecting rod 304 gradually opens. When the air conditioning oil pipe gradually approaches the pillar 203, the squeezing force of the torsion spring 303 gradually decreases, and the torsion spring 303 gradually restores its initial shape and closes the connecting rod 304 until the air conditioning pipeline is fixed.

[0036] It should be noted that during the air tightness test, the air conditioning pipeline needs to withstand a certain amount of pressure. If the pipeline is not fixed properly, it may be damaged due to movement or deformation. By fixing both ends of the pipeline, this risk of damage can be effectively reduced and the integrity and service life of the pipeline can be protected. By fixing both ends of the special-shaped air conditioning pipeline, it can be ensured that the pipeline will not move or deform during the test. This helps to reduce the detection error caused by changes in the pipeline position and improve the accuracy of air tightness testing.

[0037] Furthermore, the clamping mechanism also includes a limiting hole 4, which is opened in the middle of the top of the support 2 3, and an elastic member 401 is arranged in the limiting hole 4, and one end of the elastic member 401 is connected to a fixing member 402. The outer surface of the fixing member 402 slides in the limiting hole 4 and is adapted to the size of the limiting hole 4. The end of the fixing member 402 away from the elastic member 401 is provided with a roller 2 403, and the elastic member 401 in the limiting hole 4 drives the roller 2 403 on the fixing member 402 to move in the vertical direction, ensuring that the clamping mechanism can adapt to the clamping and fixing of air-conditioning pipes of different sizes. Regardless of the size of the pipe, the roller 2 403 can move in the vertical direction through the action of the elastic member 401 to fit the pipe surface closely.

[0038] It is worth mentioning that when the air-conditioning pipeline is pressed and fixed, the larger pipeline squeezes the roller 403. At this time, the fixing part 402 squeezes the elastic part 401 to cause the elastic part 401 to shrink, so as to adapt to elastic air-conditioning pipelines of different sizes. Regardless of the size of the pipeline, it can be stably and effectively fixed, and at the same time, the pressure on the pipeline can be reduced, reducing the risk of damage.

[0039] Among them, the second roller 403 is rotatably connected to the fixing member 402. Rubber strips for increasing friction are provided on the outer surfaces of both the second roller 403 and the first roller 305, which can avoid the displacement of the pipeline caused by the lateral extrusion force applied by the air cylinder, enhance the friction between the rollers and the air-conditioning pipeline, help to fix the pipeline more stably, prevent the pipeline from sliding or moving due to force during the airtightness detection process, and ensure the accuracy and stability of the detection.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent in such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0041] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can have any deformation or modification without departing from the said principles.

Claims

1. An air tightness detection device for automobile air conditioning pipelines, characterized in that: include: A body (1), a fixing plate (101), a groove (102), a connecting rod (103) and a sliding frame (104); A placement plate (2), the placement plate (2) being arranged on top of a fixing plate (101), a support column (201) being arranged at a middle position of the top of the placement plate (2), support columns (3) being arranged at both ends of the placement plate (2), and a clamping mechanism for fixing both ends of an air conditioning pipeline being arranged on the support columns (3).

2. The air tightness detection device for automobile air conditioning pipeline according to claim 1 is characterized in that: The body (1) is provided with a groove (102), the fixed plate (101) is located in the groove (102), the sliding frame (104) is arranged at both ends of the fixed plate (101) and is fixedly connected to the fixed plate (101), and the sliding frame (104) slides on a connecting rod (103) provided on the body (1).

3. The air tightness detection device for automobile air conditioning pipeline according to claim 2 is characterized in that: The top end of the pillar 1 (201) is provided with a notch (202), and the notch (202) is in an arc shape.

4. The air tightness detection device for automobile air conditioning pipeline according to claim 3 is characterized in that: The clamping mechanism comprises a connecting groove (301), and the connecting groove (301) is symmetrically arranged on the second pillar (3).

5. The air tightness detection device for automobile air conditioning pipeline according to claim 4 is characterized in that: A rotating shaft (302) is disposed in each of the connection grooves (301), and a torsion spring (303) is symmetrically sleeved on the outer surface of each of the rotating shafts (302).

6. The air tightness detection device for automobile air conditioning pipeline according to claim 5, characterized in that: The outer surface of the rotating shaft (302) is provided with a connecting rod (304) limited by a torsion spring (303), and one end of the connecting rod (304) away from the rotating shaft (302) is provided with a roller one (305), and the roller one (305) is rotatably connected to the connecting rod (304).

7. The air tightness detection device for automobile air conditioning pipeline according to claim 6 is characterized in that: The clamping mechanism further comprises a limiting hole (4), wherein the limiting hole (4) is arranged in the middle of the top end of the second support column (3).

8. The air tightness detection device for automobile air conditioning pipeline according to claim 7 is characterized in that: An elastic member (401) is disposed in the limiting hole (4), and one end of the elastic member (401) is connected to a fixing member (402).

9. The air tightness detection device for automobile air conditioning pipeline according to claim 8, characterized in that: The outer surface of the fixing member (402) slides in the limiting hole (4) and is adapted to the size of the limiting hole (4). A second roller (403) is provided at one end of the fixing member (402) away from the elastic member (401).

10. The air tightness detection device for automobile air conditioning pipeline according to claim 9, characterized in that: The second roller (403) is rotatably connected to the fixing member (402), and the outer surfaces of the second roller (403) and the first roller (305) are both provided with rubber strips for increasing friction.

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