Rotating disc type leak detection equipment for cylinder body and cylinder cover of engine

Abstract

The utility model relates to the technical field of engine cylinder cover leakage detection equipment, and discloses engine cylinder body and cylinder cover rotating disc type leakage detection equipment. The rotating disc type leakage detecting mechanism is arranged at the top of the machine base, and the rotating disc type leakage detecting mechanism is used for automatically changing positions of the cylinder cover; and the air tightness detection mechanism is arranged at the top of the rotating disc type leak detection mechanism. According to the utility model, through the overall design of the rotating disc type leak detection mechanism, the stepping motor is controlled to work to drive the gear to rotate, and through the design that the gear is engaged with the gear ring, the rotating base can be driven to drive the cylinder cover above the rotating base to rotate, so that the preprocessed cylinder cover can be moved to a detection station, and the detected cylinder cover can be moved out; through cooperative work of three workers, processing before detection and processing after leakage detection can be implemented, zero pick-and-place time of the cylinder cover is basically realized, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of engine cylinder head leak detection equipment, specifically, to a rotary leak detection device for engine cylinder block and cylinder head. Background Technology

[0002] The engine cylinder head is a key component mounted on top of the cylinder block, used to seal the top of the cylinder and, together with the piston top and cylinder wall, form the combustion chamber. During the production process, the engine cylinder head needs to be tested for airtightness using an airtightness tester. The working principle of an airtightness tester is primarily based on the measurement of gas pressure changes or flow rates. High-precision sensors monitor the gas leakage inside or on the surface of the object being tested in real time, thereby determining whether a leak exists and accurately calculating the leakage amount. The specific operating method is as follows: gas at a certain pressure is introduced into the object being tested, the gas supply is then cut off, and the change in internal pressure is monitored. If the pressure drops beyond a threshold within a set time, a leak is identified.

[0003] Existing engine cylinder head leak detection equipment has low efficiency because: before leak detection, the cylinder head needs to be clamped and fixed, and other holes need to be sealed. After leak detection, the clamping and fixing and other hole sealing need to be released. These operations will prolong the overall detection time, resulting in low leak detection efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a rotary leak detection device for engine block and cylinder head, which solves the problem in the prior art that the cylinder head needs to be operated before and after leak detection, thus affecting the overall efficiency of leak detection.

[0005] This utility model provides the following technical solution: a rotary leak detection device for engine block and cylinder head, comprising:

[0006] Base;

[0007] A rotary leak detection mechanism is installed on the top of the engine base and is used to automatically reposition the cylinder head.

[0008] An airtightness testing mechanism is installed on top of a rotary leak detection mechanism and is used to test the airtightness of the cylinder head.

[0009] As a preferred embodiment of the above technical solution, the rotary leak detection mechanism includes a support leg, which is fixedly installed on the top of the base. A square base is fixedly installed on the top of the support leg, and a stepper motor is fixedly installed on the bottom of the square base.

[0010] The above technical solution, through the design of a stepper motor, can provide power for the cylinder head repositioning process.

[0011] As a preferred embodiment of the above technical solution, a rotating base is rotatably connected to the center of the top of the square base, a gear ring is fixedly sleeved on the outer wall of the rotating base, the output shaft of the stepper motor extends to the top of the square base and is fixedly connected to a gear, and the outer wall of the gear meshes with the outer wall of the gear ring.

[0012] Through the above technical solution, by designing a gear ring and gears, a stepper motor can be used to drive the rotating base and the cylinder head above it to rotate.

[0013] As a preferred embodiment of the above technical solution, a limiting cylinder is fixedly installed on the top of the rotating base, a positioning bolt is threadedly connected to the outer wall of the limiting cylinder, a movable leg is movably inserted into the inner cavity of the limiting cylinder, the threaded end of the positioning bolt is movably connected to the outer wall of the movable leg, a detection turntable is fixedly installed on the top of the movable leg, and a matching clamp is fixedly installed on the top of the detection turntable.

[0014] The above technical solution, through the design of the limiting cylinder, positioning bolt and movable leg, facilitates the replacement of fitting clamps of different specifications.

[0015] As a preferred embodiment of the above technical solution, the airtightness testing mechanism includes a column, which is fixedly installed on the top of a square base. A top seat is fixedly installed on the top of the column, and an airtightness tester is fixedly installed on the inner wall of the top seat. A test tube is fixedly connected to the bottom of the airtightness tester.

[0016] The above technical solution, through the design of the airtightness tester and test tube, facilitates the airtightness testing process.

[0017] As a preferred embodiment of the above technical solution, a multi-port pipe is fixedly connected to the bottom of the detection tube, a valve is fixedly connected to the side of the multi-port pipe, a gooseneck pipe is fixedly connected to the end of the valve away from the multi-port pipe, and a detection connector is threadedly connected to the end of the gooseneck pipe away from the valve.

[0018] The above technical solution, through the design of the valve, facilitates the switching and use of different detection connectors.

[0019] As a preferred embodiment of the above technical solution, a support arm is fixedly installed on the outer wall of the column, and a plastic sleeve is fixedly installed on the end of the support arm away from the outer wall of the column, and the gooseneck tube is movably engaged in the inner cavity of the plastic sleeve.

[0020] The above technical solution, through the design of the support arm and plastic sleeve, can support the idle gooseneck tube, thereby improving the cleanliness of the inspection station of this structure.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention utilizes a rotary leak detection mechanism. By controlling a stepper motor to drive a gear, the gear meshes with a gear ring, driving a rotating base to rotate the cylinder head above it. This allows the pre-treated cylinder head to be moved to the testing station, and the tested cylinder head to be transferred out. During the leak detection process, with the cooperation of three workers, pre-testing and post-testing treatments can be carried out, essentially achieving zero cylinder head handling time and significantly improving testing efficiency. This makes it suitable for rapid testing on large-scale production lines. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is a schematic diagram of the back structure of the square base of this utility model;

[0025] Figure 3 This is a schematic diagram of the separation structure of the movable leg and the detection turntable of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the multi-port pipe of this utility model.

[0027] In the diagram: 1. Base; 2. Turntable leak detection mechanism; 21. Support leg; 22. Square base; 221. Stepper motor; 222. Gear; 223. Rotating base; 224. Gear ring; 23. Limiting cylinder; 24. Positioning bolt; 25. Movable leg; 26. Detection turntable; 27. Fitting clamp; 3. Air tightness testing mechanism; 31. Column; 32. Top seat; 33. Air tightness tester; 34. Detection tube; 341. Multi-port pipe; 342. Valve; 343. Gooseneck tube; 344. Detection connector; 345. Support arm; 346. Plastic sleeve. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figures 1-4 As shown, this utility model provides a technical solution: a rotary leak detection device for engine block and cylinder head, comprising:

[0030] Base 1;

[0031] Rotary leak detection mechanism 2 is installed on the top of engine base 1. Rotary leak detection mechanism 2 is used to automatically rotate cylinder head.

[0032] Air tightness testing mechanism 3 is located on top of rotary leak detection mechanism 2 and is used to test the air tightness of cylinder head.

[0033] As one implementation method in this embodiment, such as Figure 1 , Figure 2 As shown, the rotary leak detection mechanism 2 includes a support leg 21, which is fixedly mounted on the top of the base 1. A square base 22 is fixedly mounted on the top of the support leg 21, and a stepper motor 221 is fixedly mounted on the bottom of the square base 22. A rotating base 223 is rotatably connected to the center of the top of the square base 22. A gear ring 224 is fixedly sleeved on the outer wall of the rotating base 223. The output shaft of the stepper motor 221 extends to the top of the square base 22 and is fixedly connected to a gear 222. The outer wall of the gear 222 and the gear ring 224 are fixedly connected. The outer wall meshing of 4, the detection gap, controls the stepper motor 221 to work, which can drive the gear 222 to rotate. Through the design of gear 222 meshing with gear ring 224, the rotating base 223 can be driven to rotate the cylinder head above it, thereby moving the pre-treated cylinder head to the detection station and transferring the detected cylinder head out. During the leak detection process, through the cooperation of three workers, pre-detection treatment and post-detection treatment can be carried out, basically achieving zero cylinder head pick-up and drop time and improving the overall efficiency of leak detection work.

[0034] As one implementation method in this embodiment, such as Figure 3 As shown, a limiting cylinder 23 is fixedly installed on the top of the rotating base 223. A positioning bolt 24 is threadedly connected to the outer wall of the limiting cylinder 23. A movable leg 25 is movably inserted into the inner cavity of the limiting cylinder 23. The threaded end of the positioning bolt 24 is movably connected to the outer wall of the movable leg 25. A detection turntable 26 is fixedly installed on the top of the movable leg 25. A mating clamp 27 is fixedly installed on the top of the detection turntable 26. The mating clamp 27 is an existing device used to fix cylinder heads of specified specifications. When changing different cylinder head products, different mating clamps 27 need to be replaced. First, loosen the positioning bolt 24 to release the state of locking the movable leg 25 in the inner cavity of the limiting cylinder 23. Then, the movable leg 25 can be pulled out from the inside of the limiting cylinder 23 to complete the disassembly of the detection turntable 26 and the mating clamp 27. Then, insert the replacement movable leg 25 into the limiting cylinder 23 and tighten the positioning bolt 24.

[0035] As one implementation method in this embodiment, such as Figure 1 , Figure 4As shown, the airtightness testing mechanism 3 includes a column 31, which is fixedly installed on the top of a square base 22. A top seat 32 is fixedly installed on the top of the column 31. An airtightness tester 33 is fixedly installed on the inner wall of the top seat 32. A test tube 34 is fixedly connected to the bottom of the airtightness tester 33. A multi-port pipe 341 is fixedly connected to the bottom of the test tube 34. A valve 342 is fixedly connected to the side of the multi-port pipe 341. A gooseneck tube 343 is fixedly connected to the end of the valve 342 away from the multi-port pipe 341. A test connector 344 is threadedly connected to the end of the gooseneck tube 343 away from the valve 342. A support arm 345 is fixedly installed on the outer wall of the column 31. A plastic sleeve 346 is fixedly installed on the end of the support arm 345 away from the outer wall of the column 31. The gooseneck tube 343 is movably engaged within the inner wall of the plastic sleeve 346. Inside the cavity, the test connectors 344 at the ends of the four gooseneck tubes 343 are all of different specifications, which can be used for cylinder heads of different specifications. The valve 342 is initially closed. Before use, simply open the valve 342 corresponding to the test connector 344. During testing, connect the test connector 344 to the cylinder head and control the air tightness tester 33 to work. Pressurized gas is delivered into the cylinder head through the test tube 34, multi-port tube 341, valve 342, gooseneck tube 343 and test connector 344. After stabilization, observe for a period of time. If there is no change in air pressure, the air tightness of the cylinder head is qualified; otherwise, it is unqualified. The plastic sleeve 346 is used to secure the idle gooseneck tube 343 for easy organization. The design that allows for quick switching of the test connector 344 can increase the processing efficiency of product replacement.

[0036] Working principle: During use, the cylinder head is pre-installed in the fitting fixture 27. The valve 342 corresponding to the designated test connector 344 is opened. During testing, the test connector 344 is connected to the cylinder head, and the air tightness tester 33 is controlled to work. Pressurized gas is delivered into the cylinder head through the test tube 34, multi-port tube 341, valve 342, gooseneck tube 343, and test connector 344. After stabilization, it is observed for a period of time. If there is no change in air pressure, the air tightness of the cylinder head is qualified; otherwise, it is unqualified. After the test is completed, the test connector 344 is removed. During the test interval, the stepper motor 221 is controlled to work, which can drive the gear 222 to rotate, thereby driving the rotating base 223 to rotate the cylinder head above it. The pre-treated cylinder head can be moved to the test station, and the tested cylinder head can be transferred out. During the leak detection process, the pre-test treatment and post-test treatment can be carried out through the cooperation of three workers.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A rotary leak detection device for engine block and cylinder head, characterized in that, include: Base (1); A rotary leak detection mechanism (2) is provided on the top of the base (1) and is used to automatically rotate the cylinder head. An air tightness testing mechanism (3) is installed on top of a rotary leak detection mechanism (2) and is used to test the air tightness of the cylinder head.

2. The engine block and cylinder head rotary leak detection device according to claim 1, characterized in that: The rotary leak detection mechanism (2) includes a support leg (21), which is fixedly installed on the top of the base (1). A square seat (22) is fixedly installed on the top of the support leg (21), and a stepper motor (221) is fixedly installed on the bottom of the square seat (22).

3. The engine block and cylinder head rotary leak detection device according to claim 2, characterized in that: A rotating base (223) is rotatably connected to the center of the top of the square base (22). A gear ring (224) is fixedly sleeved on the outer wall of the rotating base (223). The output shaft of the stepper motor (221) extends to the top of the square base (22) and is fixedly connected to a gear (222). The outer wall of the gear (222) meshes with the outer wall of the gear ring (224).

4. The engine block and cylinder head rotary leak detection device according to claim 3, characterized in that: A limiting cylinder (23) is fixedly installed on the top of the rotating base (223). A positioning bolt (24) is threadedly connected to the outer wall of the limiting cylinder (23). A movable leg (25) is movably inserted into the inner cavity of the limiting cylinder (23). The threaded end of the positioning bolt (24) is movably connected to the outer wall of the movable leg (25). A detection turntable (26) is fixedly installed on the top of the movable leg (25). A fitting clamp (27) is fixedly installed on the top of the detection turntable (26).

5. The engine block and cylinder head rotary leak detection device according to claim 2, characterized in that: The air tightness testing mechanism (3) includes a column (31), which is fixedly installed on the top of a square base (22). A top seat (32) is fixedly installed on the top of the column (31). An air tightness tester (33) is fixedly installed on the inner wall of the top seat (32). A test tube (34) is fixedly connected to the bottom of the air tightness tester (33).

6. The engine block and cylinder head rotary leak detection device according to claim 5, characterized in that: The bottom of the detection tube (34) is fixedly connected to a multi-port tube (341), and a valve (342) is fixedly connected to the side of the multi-port tube (341). A gooseneck tube (343) is fixedly connected to the end of the valve (342) away from the multi-port tube (341), and a detection connector (344) is threaded to the end of the gooseneck tube (343) away from the valve (342).

7. The engine block and cylinder head rotary leak detection device according to claim 6, characterized in that: A support arm (345) is fixedly installed on the outer wall of the column (31). A plastic sleeve (346) is fixedly installed at one end of the support arm (345) away from the outer wall of the column (31). The gooseneck tube (343) is movably engaged in the inner cavity of the plastic sleeve (346).

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