Air tightness leak detection equipment

Abstract

The utility model relates to the engine field, and specifically relates to an air tightness leak hunting device comprising a pedestal and a detection assembly, the detection assembly comprises a mounting rack, a lifting member, an inflation member, a bearing plate, a driving member and an air pressure detector, the mounting rack is fixedly connected with the pedestal and is arranged at one side of the pedestal, the inflation member is connected with the mounting rack through the lifting member, and the bearing plate is arranged at the other side of the pedestal. The lifting component is installed in the installation frame and supports the inflation part, the bearing plate is connected with the base through the driving component, the driving component is installed on the base and drives the bearing plate to move, and the air pressure detector is fixedly installed on the bearing plate. The stability is difficult to ensure, so that the accurate alignment of the cylinder cover and the inflation structure cannot be ensured, and the detection accuracy is easily influenced.

Description

Technical Field

[0001] The utility model relates to the field of engines, in particular to an airtightness leak detection device. Background Technique

[0002] As a core component of an automobile, the performance and reliability of an engine are crucial, and the airtightness of the engine cylinder head directly affects the working efficiency and service life of the engine. Therefore, after the production of the engine cylinder head is completed, it is necessary to detect the airtightness inside the air passage of the engine cylinder head through an airtightness detection device. However, since the engine cylinder head is heavy, it is necessary to manually lift the engine cylinder head into the airtightness detection device, which is likely to cause the airtightness detection device to be misaligned with the engine cylinder head, resulting in gas leakage.

[0003] The prior art CN219015570U discloses an airtightness detection device for an engine cylinder head air passage, including a support frame. Slots are provided at the top and bottom of the inner wall of the support frame. A belt drive structure is slidably connected to the inner wall of the slot. A servo motor is bolted to the outer wall of one side of the support frame. A lifting rod is slidably connected in the through hole in the middle of the support frame. A bottom plate is welded to the bottom of the lifting rod. A return spring is fixedly installed on the top of the bottom plate, and the top of the return spring is fixedly connected to the bottom of the support frame. In this utility model, through the cylinder head support structure, the engine cylinder head is placed on the top of the belt drive structure, and then the belt drive structure drives the engine cylinder head to move directly above the cylinder head support structure. The cylinder head manufacturing structure pushes the engine cylinder head upward to fit with the inflation structure. The inflation structure inflates the air passage in the engine cylinder head, and the air pressure detector detects the air pressure in the air passage to determine the internal sealing strength of the engine cylinder head.

[0004] For the above-mentioned airtightness detection device for the engine cylinder head air passage, due to the heavy mass of the cylinder head, it is difficult to ensure its stability during the process of the push plate pushing the cylinder head upward, so it is impossible to ensure the accurate alignment of the cylinder head and the inflation structure, which is likely to affect the detection accuracy. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an airtightness leak detection device, which solves the problem in the prior art that due to the heavy mass of the cylinder head, it is difficult to ensure its stability during the process of the push plate pushing the cylinder head upward, so it is impossible to ensure the accurate alignment of the cylinder head and the inflation structure, which is likely to affect the detection accuracy.

[0006] To achieve the above object, the present utility model provides an airtight leak detection device, which includes a base and a detection assembly. The detection assembly includes a mounting frame, a lifting member, an inflating member, a bearing plate, a driving member and a pressure detector. The mounting frame is fixedly connected to the base and is located on one side of the base. The inflating member is connected to the mounting frame through the lifting member. The lifting member is installed in the mounting frame and supports the inflating member. The bearing plate is connected to the base through the driving member. The driving member is installed on the base and drives the bearing plate to move. The pressure detector is fixedly installed on the bearing plate.

[0007] Among them, the lifting member includes a hydraulic cylinder, a fixing plate and a guiding portion. The hydraulic cylinder is fixedly connected to the mounting frame and is located at the top of the mounting frame. The fixing plate is fixedly connected to the output end of the hydraulic cylinder. The guiding portion guides the movement of the fixing plate.

[0008] Among them, the guiding portion includes a positioning column and a guiding sleeve. The positioning column is fixedly connected to the base and is located on the side of the base close to the fixing plate. The guiding sleeve is slidably connected to the positioning column and is fixedly connected to the fixing plate.

[0009] Among them, the driving member includes a guide rail, a sliding plate and a power portion. The guide rail is fixedly connected to the base and is located on the side of the base close to the bearing plate. The sliding plate is slidably connected to the guide rail and is fixedly connected to the bearing plate. The power portion drives the sliding plate to move.

[0010] Among them, the power portion includes a screw rod and a driving motor. The screw rod is rotatably installed on the base and is threadedly connected to the sliding plate. The driving motor is installed on the base, and the output shaft of the driving motor is fixedly connected to the screw rod.

[0011] An airtight leak detection device of the present utility model includes a base and a detection assembly. The detection assembly includes a mounting frame, a lifting member, an inflating member, a bearing plate, a driving member and a pressure detector. The mounting frame is fixedly connected to the base and is located on one side of the base. The inflating member is connected to the mounting frame through the lifting member. The lifting member is installed in the mounting frame and supports the inflating member. The bearing plate is connected to the base through the driving member. The driving member is installed on the base and drives the bearing plate to move. The pressure detector is fixedly installed on the bearing plate, which solves the problem in the prior art that since the cylinder head is heavy, it is difficult to ensure its stability during the process of the pushing plate pushing the cylinder head to rise, so that the accurate alignment between the cylinder head and the inflating structure cannot be guaranteed, and the detection accuracy is easily affected. Description of the Drawings

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0013] Figure 1 It is a schematic diagram of the overall structure of the airtightness leak detection device of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the carrier plate of the present utility model.

[0015] Figure 3 It is a schematic diagram of the overall structure of the driving member of the present utility model.

[0016] In the figure: 101 - base, 102 - mounting frame, 103 - hydraulic cylinder, 104 - fixing plate, 105 - positioning column, 106 - guide sleeve, 107 - inflating member, 108 - carrier plate, 109 - positioning groove, 110 - air pressure detector, 111 - sealing ring, 112 - guide rail, 113 - sliding plate, 114 - screw rod, 115 - driving motor. Detailed implementation manners

[0017] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0018] Please refer to Figures 1-3 , Figure 1 It is a schematic diagram of the overall structure of the airtightness leak detection device of the present utility model, Figure 2 It is a schematic diagram of the structure of the carrier plate 108 of the present utility model, Figure 3 It is a schematic diagram of the overall structure of the driving member of the present utility model.

[0019] The airtightness leak detection device of the present utility model includes a base 101, a mounting frame 102, a hydraulic cylinder 103, a fixing plate 104, a positioning column 105, a guide sleeve 106, an inflating member 107, a carrier plate 108, a positioning groove 109, an air pressure detector 110, a sealing ring 111, a guide rail 112, a sliding plate 113, a screw rod 114, and a driving motor 115. It solves the problem that in the prior art, due to the relatively heavy mass of the cylinder head, it is difficult to ensure the stability of the pushing plate during the process of pushing the cylinder head to rise, so that the accurate alignment between the cylinder head and the inflating structure cannot be guaranteed, which easily affects the detection accuracy. It can be understood that the foregoing solution can also be used to improve the problem of detection stability.

[0020] In this embodiment, the base 101 is used to provide stable support. Through the detection component, the accuracy of the airtightness detection result of the engine cylinder head can be ensured, thus solving the problem in the prior art that due to the heavy mass of the cylinder head, it is difficult to ensure the stability of the pushing plate during the process of pushing the cylinder head upward, so that the accurate alignment between the cylinder head and the inflation structure cannot be guaranteed, and the detection accuracy is easily affected.

[0021] Among them, the mounting frame 102 is fixedly connected to the base 101 and is located on one side of the base 101. The inflating member 107 is connected to the mounting frame 102 through the lifting member. The lifting member is installed in the mounting frame 102 and supports the inflating member 107. The bearing plate 108 is connected to the base 101 through the driving member. The driving member is installed on the base 101 and drives the bearing plate 108 to move. The air pressure detector 110 is fixedly installed on the bearing plate 108. The mounting frame 102 is a rectangular frame body. The inflating member 107 is installed in the mounting frame 102 through the lifting member. The lifting member can drive the inflating member 107 to perform vertical lifting. The inflating member 107 is a prior art technology, including a processing chip, a solenoid valve, an air pipe, a jet port and an air pump. The inflating member 107 can fill gas into the air passage in the engine cylinder head through the opening at the top of the engine cylinder head. The bearing plate 108 is installed below the inflating member 107 through the driving member. The driving member can drive the bearing plate 108 to perform horizontal movement. A positioning groove 109 is formed on the bearing plate 108. The positioning groove 109 matches the bottom contour of the engine cylinder head. The engine cylinder head can be conveniently positioned on the bearing plate 108 through the positioning groove 109. The air pressure detector 110 is a prior art technology and is fixedly installed in the positioning groove 109 of the bearing plate 108 for detecting the air pressure in the air passage. A sealing ring 111 is arranged at the bottom of the air pressure detector 110. The sealing ring 111 can play a sealing role to avoid air leakage. Compared with the prior art, this application makes changes in the overall structure, so that the cylinder head does not need to be pushed upward during the detection process, thereby reducing the possibility of the cylinder head shifting, and solving the problem in the prior art that due to the heavy mass of the cylinder head, it is difficult to ensure the stability of the pushing plate during the process of pushing the cylinder head upward, so that the accurate alignment between the cylinder head and the inflation structure cannot be guaranteed, and the detection accuracy is easily affected.

[0022] Secondly, the hydraulic cylinder 103 is fixedly connected to the mounting bracket 102 and is located at the top of the mounting bracket 102; the fixed plate 104 is fixedly connected to the output end of the hydraulic cylinder 103; the guiding portion guides the movement of the fixed plate 104. The hydraulic cylinder 103 is inversely installed at the inner top of the mounting bracket 102, and the output end direction is vertically downward. The fixed plate 104 is located on the output end of the hydraulic cylinder 103 and is used to install the inflating member 107. The guiding portion can guide the movement of the fixed plate 104 to ensure that the inflating member 107 can only move in the vertical direction. Through the telescopic movement of the hydraulic cylinder 103, the inflating member 107 is driven to move up and down.

[0023] Meanwhile, the positioning posts 105 are fixedly connected to the base 101 and are located on the side of the base 101 close to the fixed plate 104; the guide sleeves 106 are slidably connected to the positioning posts 105 and are fixedly connected to the fixed plate 104. The positioning posts 105 are smooth cylinders, and the number is two. The bottoms of both are fixedly connected to the base 101 and are respectively located on both sides of the fixed plate 104. The guide sleeves 106 have through holes matching the diameters of the positioning posts 105. The number of the guide sleeves 106 is two, and they are respectively sleeved on the two positioning posts 105 through the through holes. The two sides of the fixed plate 104 are respectively fixedly connected to the two guide sleeves 106. Through the positioning posts 105 and the guide sleeves 106, the guiding of the movement of the fixed plate 104 is realized.

[0024] In addition, the guide rail 112 is fixedly connected to the base 101 and is located on the side of the base 101 close to the bearing plate 108; the sliding plate 113 is slidably connected to the guide rail 112 and is fixedly connected to the bearing plate 108; the power portion drives the sliding plate 113 to move. The guide rail 112 is fixedly installed on the top of the base 101, and one end extends into the mounting bracket 102. The bottom of the sliding plate 113 has a chute matching the guide rail 112, and the sliding plate 113 is installed on the guide rail 112 through the chute. The bearing plate 108 is installed on the top of the sliding plate 113 and moves along with the movement of the sliding plate 113. The power portion is used to drive the sliding plate 113 to move. By driving the sliding plate 113 to move through the power portion, the bearing plate 108 is driven to move.

[0025] Finally, the screw rod 114 is rotatably installed on the base 101 and is in threaded connection with the sliding plate 113; the driving motor 115 is installed on the base 101, the output shaft of the driving motor 115 is fixedly connected with the screw rod 114, the screw rod 114 is installed on the base 101 through bearings, one end also extends into the mounting frame 102 and is parallel to the guide rail 112, the sliding plate 113 has a threaded through hole, the screw rod 114 passes through the threaded through hole to achieve threaded connection with the sliding plate 113, and the driving motor 115 is fixed on the base 101 by bolts and is used to drive the screw rod 114 to rotate. By driving the screw rod 114 to rotate through the driving motor 115, the sliding plate 113 is driven to move.

[0026] In this embodiment, during detection, the engine cylinder head is placed in the positioning groove 109 of the bearing plate 108 so that the engine cylinder head is positioned. Then, the driving motor 115 is started, and the driving motor 115 drives the screw rod 114 to rotate, driving the sliding plate 113 to move to directly below the inflating member 107. At this time, the engine cylinder head is also directly below the inflating member 107. After that, the hydraulic cylinder 103 extends, driving the fixing plate 104 and the inflating member 107 to move downward until the inflating member 107 is in contact with the engine cylinder head. Finally, the inflating member 107 fills the air passage in the engine cylinder head with gas through the opening at the top of the engine cylinder head, and the air pressure detector 110 detects the gas pressure in the air passage of the engine cylinder head. Compared with the prior art, this application makes changes to the overall structure, so that the cylinder head does not need to be pushed upward during the detection process, thereby reducing the possibility of the cylinder head shifting. It solves the problem in the prior art that due to the heavy mass of the cylinder head, it is difficult to ensure its stability during the process of the pushing plate pushing the cylinder head upward, so that the accurate alignment between the cylinder head and the inflating structure cannot be guaranteed, and it is easy to affect the detection accuracy.

[0027] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. An airtightness leak detection device, comprising a base, characterized in that: Also included are detection components; The detection assembly includes a mounting frame, a lifting component, an inflatable member, a supporting plate, a driving component and an air pressure detector. The mounting frame is fixedly connected to the base and is located on one side of the base. The inflatable member is connected to the mounting frame through the lifting component. The lifting component is installed in the mounting frame and supports the inflatable member. The supporting plate is connected to the base through the driving component. The driving component is installed on the base and drives the supporting plate to move. The air pressure detector is fixedly installed on the supporting plate.

2. The airtightness leak detection device according to claim 1, characterized in that: The lifting component includes a hydraulic cylinder, a fixed plate and a guide part. The hydraulic cylinder is fixedly connected to the mounting frame and is located on the top of the mounting frame; the fixed plate is fixedly connected to the output end of the hydraulic cylinder; and the guide part guides the movement of the fixed plate.

3. The airtightness leak detection device according to claim 2, characterized in that: The guide part includes a positioning column and a guide sleeve. The positioning column is fixedly connected to the base and is located on a side of the base close to the fixed plate. The guide sleeve is slidably connected to the positioning column and fixedly connected to the fixed plate.

4. The airtightness leak detection device according to claim 1, characterized in that: The driving component includes a guide rail, a slide plate and a power unit. The guide rail is fixedly connected to the base and is located on a side of the base close to the supporting plate. The slide plate is slidably connected to the guide rail and fixedly connected to the supporting plate. The power unit drives the slide plate to move.

5. The airtightness leak detection device according to claim 4, characterized in that: The power unit includes a screw and a drive motor. The screw is rotatably mounted on the base and is threadedly connected to the slide. The drive motor is mounted on the base, and an output shaft of the drive motor is fixedly connected to the screw.

Images