Equipment suitable for leakage detection of automobile special-shaped part

Abstract

The utility model relates to equipment suitable for leakage detection of an automobile special-shaped part, which comprises a supporting frame, a connecting frame is fixedly arranged at the top of the supporting frame, a stainless steel water tank and a supporting plate are arranged on the connecting frame, the stainless steel water tank is filled with water, the supporting plate is located on the front side of the stainless steel water tank, and the supporting plate is connected with the stainless steel water tank. A jig large plate is arranged in the stainless steel water tank, an automobile special-shaped part to be subjected to leakage detection is installed on the jig large plate, a first fixing base, a first telescopic air cylinder and a second fixing base are fixedly arranged on the supporting plate, and the first fixing base and the second fixing base are located on the two sides of the first telescopic air cylinder correspondingly. The device further comprises a first connecting shaft, a second connecting shaft, a top plate and a limiting plate, and the upper end of a first piston rod in the first telescopic air cylinder is fixedly connected with the top plate. The device has the characteristics of simple structure, convenience in operation, safety and reliability.

Description

Technical Field

[0001] The utility model relates to a device suitable for leakage detection of automobile special-shaped parts. Background Art

[0002] As the foundation of the automobile industry, auto parts are a necessary factor to support the sustainable and healthy development of the automobile industry. In particular, the current independent development and innovation in the automobile industry, which is in full swing, requires a strong parts system to support it. The independent brand and technological innovation of the whole vehicle need parts as the basis, and the independent innovation of parts has a strong driving force for the development of the whole vehicle industry. They influence and interact with each other. Without the independent brand of the whole vehicle, the R&D and innovation capabilities of the strong parts system will be difficult to burst out. Without the support of a strong parts system, it will be difficult for the independent brand to grow bigger and stronger. There are many kinds of parts on the car. For some special vehicles and modified vehicles, there are many special-shaped parts on the car.

[0003] Since there are many special-shaped parts used in special vehicles and modified vehicles, the processing of special-shaped parts is complicated, with many processes and high processing precision requirements. Therefore, it is necessary to conduct leakage detection on the sealing performance of special-shaped parts after addition. However, most traditional leakage detection equipment has complex structure, cumbersome operation and low work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a device suitable for leakage detection of automobile special-shaped parts, so as to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device suitable for leakage detection of automobile special-shaped parts, comprising a support frame, a connecting frame is fixedly arranged on the top of the support frame, a stainless steel water tank and a support plate are arranged on the connecting frame, the stainless steel water tank is filled with water, the support plate is located at the front side of the stainless steel water tank, a jig plate is arranged in the stainless steel water tank, and the automobile special-shaped parts to be leak-tested are installed on the jig plate, a first fixed seat, a first telescopic cylinder and a second fixed seat are fixedly arranged on the support plate, the first fixed seat and the second fixed seat are respectively located on both sides of the first telescopic cylinder, and also include a first connecting shaft, a second connecting shaft, a top plate and a limit plate, the upper end of the first piston rod in the first telescopic cylinder is fixedly connected to the top plate, wherein:

[0005] The lower end of the first connecting shaft is fixedly disposed in the first fixing seat, the upper part of the first connecting shaft passes through the first linear bearing on the top plate and then extends upward, and the upper end of the first connecting shaft is fixedly connected to the limiting plate through a first fastening nut;

[0006] The lower end of the second connecting shaft is fixedly arranged in the second fixing seat, the upper part of the second connecting shaft passes through the second linear bearing on the top plate and then extends upward, and the upper end of the second connecting shaft is fixedly connected to the limiting plate through a second fastening nut;

[0007] A first connecting bracket and a second connecting bracket are fixedly arranged on the top plate, a first fixing bracket is fixedly arranged on the side of the first connecting bracket, the lower part of the first fixing bracket is located in the stainless steel water tank, and the bottom of the first fixing bracket is fixedly connected to one side of the bottom of the jig plate;

[0008] A second fixing bracket is fixedly provided on the side of the second connecting bracket, the lower part of the second fixing bracket is located in the stainless steel water tank, and the bottom of the second fixing bracket is fixedly connected to the other side of the bottom of the jig plate, and the jig plate moves up and down in the stainless steel water tank driven by the first telescopic cylinder.

[0009] The support frame comprises a first front column, a second front column, a first rear column and a second rear column, wherein: the first front column is fixedly connected to the second front column via a first transverse connecting square tube, and the first front column is fixedly connected to the first rear column via a first longitudinal square tube;

[0010] The second front pillar is fixedly connected to the second rear pillar through a second longitudinal square tube, and the second rear pillar is fixedly connected to the first rear pillar through a second transverse connecting square tube.

[0011] The connection frame includes a first connection square tube, a second connection square tube, a third connection square tube and a fourth connection square tube, wherein:

[0012] The front and rear ends of the first connecting square tube are respectively fixedly arranged on the top ends of the first front pillar and the first rear pillar, and the front and rear ends of the third connecting square tube are respectively fixedly arranged on the top ends of the second front pillar and the second rear pillar;

[0013] The left end of the second connecting square tube is fixedly connected to the front portion of the right side wall of the first connecting square tube, and the right end of the second connecting square tube is fixedly connected to the front portion of the left side wall of the third connecting square tube; the left end of the fourth connecting square tube is fixedly connected to the rear portion of the right side wall of the first connecting square tube, and the right end of the fourth connecting square tube is fixedly connected to the rear portion of the left side wall of the third connecting square tube.

[0014] The first connecting bracket includes a first horizontal connecting plate and a first vertical connecting plate, wherein: the first horizontal connecting plate is fixedly connected to the top plate through a first cover plate, the first cover plate is located above the first horizontal connecting plate, and the first cover plate is fixedly connected to the top plate through a fastening screw;

[0015] The upper end of the first vertical connecting plate is fixedly connected to the rear end of the first horizontal connecting plate by fastening screws, and the front side wall of the first vertical connecting plate is fixedly connected to the top plate by a first reinforcing plate; the upper end of the first fixing bracket is fixedly connected to the first vertical connecting plate.

[0016] The second connecting bracket includes a second horizontal connecting plate and a second vertical connecting plate, wherein: the second horizontal connecting plate is fixedly connected to the top plate through a second cover plate, the second cover plate is located above the second horizontal connecting plate, and the second cover plate is fixedly connected to the top plate through fastening screws;

[0017] The upper end of the second vertical connecting plate is fixedly connected to the rear end of the second horizontal connecting plate by fastening screws, and the front side wall of the second vertical connecting plate is fixedly connected to the top plate by a second reinforcing plate; the upper end of the second fixing bracket is fixedly connected to the second vertical connecting plate.

[0018] The jig plate is provided with a first supporting and fixing bracket and a second supporting and fixing bracket, and the automobile special-shaped parts to be leak-tested are provided on the first supporting and fixing bracket and the second supporting and fixing bracket;

[0019] A first abutment frame is disposed on the outer side of the first supporting and fixing bracket, and the upper end of the first abutment frame abuts against the outer side wall of one side of the automobile special-shaped part to be leak tested;

[0020] A second abutment frame is arranged on the outer side of the second supporting and fixing bracket, and the upper end of the second abutment frame abuts against the outer side wall of the other side of the automobile special-shaped part to be tested for leakage.

[0021] The jig plate is fixedly provided with a first rotary clamping cylinder and a second rotary clamping cylinder, wherein the first rotary clamping cylinder is used to clamp an upper portion of one side of the automobile special-shaped part to be tested for leakage, and the second rotary clamping cylinder is used to clamp an upper portion of another side of the automobile special-shaped part to be tested for leakage.

[0022] A first mounting bracket is arranged on the jig plate, a second telescopic cylinder is arranged on the first mounting bracket, a first sealing plug is arranged at the end of the second piston rod in the second telescopic cylinder, and the first sealing plug abuts against the first opening of the automobile special-shaped part to be leak-tested to seal it.

[0023] A second mounting bracket is arranged on the jig plate, a third telescopic cylinder is arranged on the second mounting bracket, a second sealing plug is arranged at the end of the third piston rod in the third telescopic cylinder, and the second sealing plug abuts against the second opening of the automobile special-shaped part to be leak-tested to seal it.

[0024] A third mounting bracket is arranged on the jig plate, a fourth telescopic cylinder is arranged on the third mounting bracket, a third sealing plug is arranged at the end of the fourth piston rod in the fourth telescopic cylinder, and the third sealing plug abuts against the third opening of the automobile special-shaped part to be leak-tested to seal it.

[0025] Beneficial effects of the utility model: the embodiment of the utility model provides a device suitable for leakage detection of automobile special-shaped parts, which includes a supporting frame, a connecting frame is fixedly arranged on the top of the supporting frame, a stainless steel water tank and a supporting plate are arranged on the connecting frame, the stainless steel water tank is filled with water, the support plate is located on the front side of the stainless steel water tank, a jig plate is arranged in the stainless steel water tank, and the automobile special-shaped parts to be leak-detected are installed on the jig plate, a first fixed seat, a first telescopic cylinder and a second fixed seat are fixedly arranged on the supporting plate, the first fixed seat and the second fixed seat are respectively located on both sides of the first telescopic cylinder, and also include a first connecting shaft, a second connecting shaft, a top plate and a limit plate, the upper end of the first piston rod in the first telescopic cylinder is fixedly connected to the top plate; through the above design, the utility model has the characteristics of simple structure, convenient operation, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a device suitable for leakage detection of automobile special-shaped parts provided by an embodiment of the utility model.

[0027] Figure 2 A schematic diagram of the three-dimensional structure of the jig plate and the automobile special-shaped part provided in the embodiment of the utility model.

[0028] Figure 3 A schematic diagram of the three-dimensional structure of the automobile special-shaped part provided in an embodiment of the utility model cooperating with the first sealing plug, the second sealing plug and the third sealing plug.

[0029] Figure 4 A schematic diagram of the three-dimensional structure of a stainless steel water tank in one direction matched with a first connecting shaft, a second connecting shaft, a top plate and a limiting plate provided in an embodiment of the utility model.

[0030] Figure 5 A schematic diagram of the three-dimensional structure in another direction of the stainless steel water tank provided in an embodiment of the utility model cooperating with the first connecting shaft, the second connecting shaft, the top plate and the limiting plate.

[0031] Figure 6 A schematic side view of the structure of a jig plate matched with a special-shaped automobile part provided in an embodiment of the utility model.

[0032] Figure 7The present invention is a three-dimensional structural schematic diagram of a special-shaped automobile part provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] See also Figures 1 to 7The utility model provides a technical solution: a device suitable for leakage detection of automobile special-shaped parts, comprising a support frame 100, a connecting frame is fixedly arranged on the top of the support frame 100, a stainless steel water tank 101 and a support plate 102 are arranged on the connecting frame, the stainless steel water tank 101 is filled with water, the support plate 102 is located at the front side of the stainless steel water tank 101, a jig plate 103 is arranged in the stainless steel water tank 101, and the automobile special-shaped part 200 to be leak-detected is installed on the jig plate 103, a first fixed seat 104, a first telescopic cylinder 105 and a second fixed seat 106 are fixedly arranged on the support plate 102, the first fixed seat 104 and the second fixed seat 106 are respectively located on both sides of the first telescopic cylinder 105, and also include a first connecting shaft 107, a second connecting shaft 108, a top plate 109 and a limit plate 110, the upper end of the first piston rod in the first telescopic cylinder 105 is fixedly connected to the top plate 109, wherein:

[0038] The lower end of the first connecting shaft 107 is fixedly disposed in the first fixing seat 104, the upper part of the first connecting shaft 107 passes through the first linear bearing 111 on the top plate 109 and then extends upward, and the upper end of the first connecting shaft 107 is fixedly connected to the limiting plate 110 through a first fastening nut 112;

[0039] The lower end of the second connecting shaft 108 is fixedly disposed in the second fixing seat 106, the upper part of the second connecting shaft 108 passes through the second linear bearing 113 on the top plate 109 and then extends upward, and the upper end of the second connecting shaft 108 is fixedly connected to the limiting plate 110 through a second fastening nut 114;

[0040] A first connecting bracket and a second connecting bracket are fixedly arranged on the top plate 109, a first fixing bracket 115 is fixedly arranged on the side of the first connecting bracket, the lower part of the first fixing bracket 11 is located in the stainless steel water tank 101, and the bottom of the first fixing bracket 115 is fixedly connected to one side of the bottom of the jig plate 103;

[0041] A second fixed bracket 116 is fixedly provided on the side of the second connecting bracket, the lower part of the second fixed bracket is located in the stainless steel water tank 101, and the bottom of the second fixed bracket 116 is fixedly connected to the other side of the bottom of the jig plate 103. The jig plate 103 moves up and down in the stainless steel water tank through the cooperation of the top plate 109, the first connecting bracket, the first fixed bracket 115, the second connecting bracket and the second fixed bracket 116 and driven by the first telescopic cylinder 105.

[0042] The support frame 100 includes a first front column 121, a second front column 122, a first rear column 131 and a second rear column 132, wherein: the first front column 121 is fixedly connected to the second front column 122 via a first transverse connecting square tube 123, and the first front column 121 is fixedly connected to the first rear column 131 via a first longitudinal square tube 124;

[0043] The second front pillar 122 is fixedly connected to the second rear pillar 132 via a second longitudinal square tube 125 , and the second rear pillar 132 is fixedly connected to the first rear pillar 131 via a second transverse connecting square tube 126 .

[0044] The connection frame includes a first connection square tube 141, a second connection square tube 142, a third connection square tube 143 and a fourth connection square tube (not shown in the figure), wherein:

[0045] The front and rear ends of the first connecting square tube 141 are respectively fixedly arranged on the top ends of the first front pillar 121 and the first rear pillar 131, and the front and rear ends of the third connecting square tube 143 are respectively fixedly arranged on the top ends of the second front pillar 122 and the second rear pillar 132;

[0046] The left end of the second connecting square tube 142 is fixedly connected to the front portion of the right side wall of the first connecting square tube 141, and the right end of the second connecting square tube 142 is fixedly connected to the front portion of the left side wall of the third connecting square tube 143; the left end of the fourth connecting square tube is fixedly connected to the rear portion of the right side wall of the first connecting square tube 141, and the right end of the fourth connecting square tube is fixedly connected to the rear portion of the left side wall of the third connecting square tube 143, that is, the first connecting square tube 141, the second connecting square tube 142, the third connecting square tube 143 and the fourth connecting square tube are fixedly connected by welding, and safety and reliability are improved.

[0047] The first connecting bracket includes a first horizontal connecting plate 151 and a first vertical connecting plate 161, wherein: the first horizontal connecting plate 151 is fixedly connected to the top plate 109 through a first cover plate 152, the first cover plate 152 is located above the first horizontal connecting plate 151, and the first cover plate 152 is fixedly connected to the top plate 109 through fastening screws;

[0048] The upper end of the first vertical connecting plate 161 is fixedly connected to the rear end of the first horizontal connecting plate 151 by fastening screws, and the front side wall of the first vertical connecting plate 161 is fixedly connected to the top plate 109 by a first reinforcing plate 153; the upper end of the first fixing bracket 115 is fixedly connected to the first vertical connecting plate 161.

[0049] The second connecting bracket includes a second horizontal connecting plate 152 and a second vertical connecting plate 162, wherein: the second horizontal connecting plate 152 is fixedly connected to the top plate 109 through a second cover plate 154, the second cover plate 154 is located above the second horizontal connecting plate 152, and the second cover plate 154 is fixedly connected to the top plate 109 through fastening screws;

[0050] The upper end of the second vertical connecting plate 162 is fixedly connected to the rear end of the second horizontal connecting plate 152 by fastening screws, and the front side wall of the second vertical connecting plate 162 is fixedly connected to the top plate by a second reinforcing plate 155; the upper end of the second fixing bracket 116 is fixedly connected to the second vertical connecting plate 162.

[0051] The jig plate 103 is provided with a first supporting and fixing bracket 171 and a second supporting and fixing bracket 172, and the automobile special-shaped part 200 to be leak-tested is provided on the first supporting and fixing bracket 171 and the second supporting and fixing bracket 172;

[0052] A first abutting frame 173 is disposed on the outer side of the first supporting and fixing bracket 171, and the upper end of the first abutting frame 173 abuts against the outer side wall of one side of the automobile special-shaped part 200 to be tested for leakage;

[0053] A second abutment frame 174 is disposed on the outer side of the second supporting and fixing bracket 172 , and the upper end of the second abutment frame 4 abuts against the outer side wall of the other side of the automobile special-shaped part 200 to be tested for leakage.

[0054] The jig plate 103 is fixedly provided with a first rotating clamping cylinder 181 and a second rotating clamping cylinder 182. The first rotating clamping cylinder 181 is used to clamp the upper part of one side of the automobile special-shaped part 200 to be tested for leakage, and the second rotating clamping cylinder 182 is used to clamp the upper part of the other side of the automobile special-shaped part 200 to be tested for leakage.

[0055] The jig plate 103 is provided with a first mounting bracket 183, a second telescopic cylinder 184 is provided on the first mounting bracket 183, a first sealing plug 185 is provided at the end of the second piston rod in the second telescopic cylinder 184, and the first sealing plug 185 abuts against the first opening 201 of the automobile special-shaped part 200 to be tested for leakage to seal it. Through the above design, that is, the first mounting bracket 183 is fixedly provided on the jig plate 103, the second telescopic cylinder 184 is provided, and the first sealing plug 185 is provided at the end of the second piston rod in the second telescopic cylinder 184, so that the first opening 201 of the automobile special-shaped part 200 to be tested for leakage is conveniently sealed, which has the characteristics of convenient assembly and quick disassembly in the later stage, thereby achieving the efficiency of improving the sealing of the testing parts.

[0056] The jig plate 103 is provided with a second mounting bracket 187, and the second mounting bracket 187 is provided with a third telescopic cylinder 188. The end of the third piston rod in the third telescopic cylinder 188 is provided with a second sealing plug 189, and the second sealing plug 189 abuts against the second opening 202 of the automobile special-shaped part 200 to be tested for leakage to seal it. Through the above design, that is, the second mounting bracket 187 and the third telescopic cylinder 188 are fixedly provided on the jig plate 103, and the second sealing plug 189 is provided at the end of the third piston rod in the third telescopic cylinder 188, so as to facilitate the sealing of the second opening 202 of the automobile special-shaped part 200 to be tested for leakage, and has the characteristics of easy assembly and quick disassembly in the later stage, thereby achieving the efficiency of improving the sealing of the testing parts.

[0057] The jig plate 103 is provided with a third mounting bracket 190, and the third mounting bracket 190 is provided with a fourth telescopic cylinder 191, and the end of the fourth piston rod in the fourth telescopic cylinder 191 is provided with a third sealing plug 192, and the third sealing plug 192 abuts against the third opening 203 of the automobile special-shaped part 200 to be tested for leakage to seal it. Through the above design, that is, the third mounting bracket 190 and the fourth telescopic cylinder 191 are fixedly provided on the jig plate 103, and the third sealing plug 192 is provided at the end of the fourth piston rod in the fourth telescopic cylinder 191, so as to facilitate the sealing of the third opening 203 of the automobile special-shaped part 200 to be tested for leakage, and has the characteristics of convenient assembly and quick disassembly in the later stage, thereby achieving the efficiency of improving the sealing of the testing parts.

[0058] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A device suitable for leakage detection of automobile special-shaped parts, characterized by: It includes a support frame, a connecting frame is fixedly arranged on the top of the support frame, a stainless steel water tank and a support plate are arranged on the connecting frame, the stainless steel water tank is filled with water, the support plate is located at the front side of the stainless steel water tank, a jig plate is arranged in the stainless steel water tank, and a special-shaped automobile part to be leak-tested is installed on the jig plate, a first fixing seat, a first telescopic cylinder and a second fixing seat are fixedly arranged on the support plate, the first fixing seat and the second fixing seat are respectively located on both sides of the first telescopic cylinder, and also includes a first connecting shaft, a second connecting shaft, a top plate and a limit plate, the upper end of the first piston rod in the first telescopic cylinder is fixedly connected to the top plate, wherein: The lower end of the first connecting shaft is fixedly disposed in the first fixing seat, the upper part of the first connecting shaft passes through the first linear bearing on the top plate and then extends upward, and the upper end of the first connecting shaft is fixedly connected to the limiting plate through a first fastening nut; The lower end of the second connecting shaft is fixedly arranged in the second fixing seat, the upper part of the second connecting shaft passes through the second linear bearing on the top plate and then extends upward, and the upper end of the second connecting shaft is fixedly connected to the limiting plate through a second fastening nut; A first connecting bracket and a second connecting bracket are fixedly arranged on the top plate, a first fixing bracket is fixedly arranged on the side of the first connecting bracket, the lower part of the first fixing bracket is located in the stainless steel water tank, and the bottom of the first fixing bracket is fixedly connected to one side of the bottom of the jig plate; A second fixing bracket is fixedly provided on the side of the second connecting bracket, the lower part of the second fixing bracket is located in the stainless steel water tank, and the bottom of the second fixing bracket is fixedly connected to the other side of the bottom of the jig plate, and the jig plate moves up and down in the stainless steel water tank driven by the first telescopic cylinder.

2. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: The support frame comprises a first front column, a second front column, a first rear column and a second rear column, wherein: the first front column is fixedly connected to the second front column via a first transverse connecting square tube, and the first front column is fixedly connected to the first rear column via a first longitudinal square tube; The second front pillar is fixedly connected to the second rear pillar through a second longitudinal square tube, and the second rear pillar is fixedly connected to the first rear pillar through a second transverse connecting square tube.

3. The device for leak detection of automobile special-shaped parts according to claim 2, characterized in that: The connection frame includes a first connection square tube, a second connection square tube, a third connection square tube and a fourth connection square tube, wherein: The front and rear ends of the first connecting square tube are respectively fixedly arranged on the top ends of the first front pillar and the first rear pillar, and the front and rear ends of the third connecting square tube are respectively fixedly arranged on the top ends of the second front pillar and the second rear pillar; The left end of the second connecting square tube is fixedly connected to the front portion of the right side wall of the first connecting square tube, and the right end of the second connecting square tube is fixedly connected to the front portion of the left side wall of the third connecting square tube; the left end of the fourth connecting square tube is fixedly connected to the rear portion of the right side wall of the first connecting square tube, and the right end of the fourth connecting square tube is fixedly connected to the rear portion of the left side wall of the third connecting square tube.

4. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: The first connecting bracket includes a first horizontal connecting plate and a first vertical connecting plate, wherein: the first horizontal connecting plate is fixedly connected to the top plate through a first cover plate, the first cover plate is located above the first horizontal connecting plate, and the first cover plate is fixedly connected to the top plate through a fastening screw; The upper end of the first vertical connecting plate is fixedly connected to the rear end of the first horizontal connecting plate by fastening screws, and the front side wall of the first vertical connecting plate is fixedly connected to the top plate by a first reinforcing plate; the upper end of the first fixing bracket is fixedly connected to the first vertical connecting plate.

5. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: The second connecting bracket includes a second horizontal connecting plate and a second vertical connecting plate, wherein: the second horizontal connecting plate is fixedly connected to the top plate through a second cover plate, the second cover plate is located above the second horizontal connecting plate, and the second cover plate is fixedly connected to the top plate through fastening screws; The upper end of the second vertical connecting plate is fixedly connected to the rear end of the second horizontal connecting plate by fastening screws, and the front side wall of the second vertical connecting plate is fixedly connected to the top plate by a second reinforcing plate; the upper end of the second fixing bracket is fixedly connected to the second vertical connecting plate.

6. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: The jig plate is provided with a first supporting and fixing bracket and a second supporting and fixing bracket, and the automobile special-shaped parts to be leak-tested are provided on the first supporting and fixing bracket and the second supporting and fixing bracket; A first abutment frame is disposed on the outer side of the first supporting and fixing bracket, and the upper end of the first abutment frame abuts against the outer side wall of one side of the automobile special-shaped part to be leak tested; A second abutment frame is arranged on the outer side of the second supporting and fixing bracket, and the upper end of the second abutment frame abuts against the outer side wall of the other side of the automobile special-shaped part to be tested for leakage.

7. The device for leak detection of automobile special-shaped parts according to claim 6, characterized in that: The jig plate is fixedly provided with a first rotary clamping cylinder and a second rotary clamping cylinder, wherein the first rotary clamping cylinder is used to clamp an upper portion of one side of the automobile special-shaped part to be tested for leakage, and the second rotary clamping cylinder is used to clamp an upper portion of another side of the automobile special-shaped part to be tested for leakage.

8. The device for leak detection of automobile special-shaped parts according to claim 1 is characterized in that: A first mounting bracket is arranged on the jig plate, a second telescopic cylinder is arranged on the first mounting bracket, a first sealing plug is arranged at the end of the second piston rod in the second telescopic cylinder, and the first sealing plug abuts against the first opening of the automobile special-shaped part to be leak-tested to seal it.

9. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: A second mounting bracket is arranged on the jig plate, a third telescopic cylinder is arranged on the second mounting bracket, a second sealing plug is arranged at the end of the third piston rod in the third telescopic cylinder, and the second sealing plug abuts against the second opening of the automobile special-shaped part to be leak-tested to seal it.

10. The device for leak detection of automobile special-shaped parts according to claim 1, characterized in that: A third mounting bracket is arranged on the jig plate, a fourth telescopic cylinder is arranged on the third mounting bracket, a third sealing plug is arranged at the end of the fourth piston rod in the fourth telescopic cylinder, and the third sealing plug abuts against the third opening of the automobile special-shaped part to be leak-tested to seal it.

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