Diesel engine cylinder head valve leakage test device
By designing a device that automatically adjusts and fixes the intake pipe, the problems of low detection efficiency and high production cost of existing diesel engine cylinder heads are solved, and efficient detection process and stable cylinder head clamping are achieved, which improves detection efficiency and cost-effectiveness. .
Patent Information
- Application Number
- CN202421135729.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing diesel engine cylinder head valve detection device is inefficient and requires manual insertion of the ventilator for testing, which leads to an increase in production costs. The detection parts are prone to skewed in the air intake pipe due to the displacement of the lower pressure plate, which affects the detection efficiency.
A device including a leak detector body, a support frame, a placement table, an extension plate, a limiting ear, a rotary shaft, a connecting pipe, a plug, a bolt and a clamping block are designed, and the rotary connection structure and a threaded connection structure are automatically adjusted and Fix the position of the intake pipe, and use clamping blocks and rubber plates to achieve stable clamping of the cylinder head to avoid displacement.
It improves the inspection work efficiency, frees workers' hands, reduces manual operations, ensures accurate docking of the air intake pipe and stable clamping of the cylinder head, and reduces production costs.
Smart Images
Figure CN222258602U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of valve detection devices, and in particular relates to a diesel engine cylinder cover valve leakage testing device. Background Art
[0002] The cylinder head valve is a key component of a diesel engine. It serves as a bridge connecting the various components of the cylinder head. It needs to withstand great impact vibration and high temperature and high pressure. Therefore, the design has high requirements for valve quality. In order to reduce the rework caused by valve leakage, this valve leak test device is specially designed. The "A Diesel Engine Valve Leak Test Device" disclosed by the application number "CN202022086364.X" is also an increasingly mature technology. The cylinder head valve to be tested is placed on the test bench, and then the intake pipe is used to abut against the intake valve to facilitate the detection of the cylinder head valve to confirm whether it is leaking. However, the device also has the following defects: However, when the above-mentioned equipment is used, the existing cylinder head valve detection is usually manually inserting the vent pipe into the intake valve for inflation to facilitate testing whether it is leaking. The above-mentioned work is inefficient and occupies manpower, resulting in an increase in production costs. In addition, the existing leak test device directly places the test piece on the operating table during the test, which is prone to displacement of the lower pressure plate, resulting in the intake pipe docking skew, which affects the efficiency of the detection work. Utility Model Content
[0003] The utility model aims to provide a diesel engine cylinder head valve leak testing device, aiming to solve the problem that when the above-mentioned equipment is in use in the prior art, the existing cylinder head valve detection is usually manually inserting a ventilation pipe into the intake valve to inflate it in order to test whether there is a leak. The above-mentioned work is inefficient and takes up manpower, resulting in an increase in production costs. In addition, the existing leak testing device directly places the test piece on the operating table during the test, which is prone to displacement of the lower pressure plate due to downward pressure, resulting in the intake pipe docking being skewed, affecting the detection work efficiency.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diesel engine cylinder head valve leak testing device, comprising: a leak detector body, a support frame fixedly installed on the surface of the leak detector body, a placement table fixedly connected to the surface of the leak detector body, an extension plate fixedly connected to the surface of the support frame, a limiting ear connected to the bottom surface of the extension plate, a surface of the limiting ear transversely penetrates a first rotating shaft, a surface of the first rotating shaft transversely penetrates a connecting pipe, a surface of the connecting pipe transversely penetrates a connecting plug, a surface of the plug transversely penetrates a connecting limiting ear, a lower end surface of the connecting pipe transversely penetrates a first bolt, a surface of the first bolt transversely penetrates an extension rod, a lower end surface of the extension rod transversely penetrates a second rotating shaft, and a surface of the second rotating shaft transversely penetrates an intake pipe.
[0005] In order to utilize the insert block to fix the position of the connecting pipe on the limiting ear, as a preferred diesel engine cylinder head valve leak testing device of the utility model, the limiting ear, the first rotating shaft and the connecting pipe form a rotating connection structure, the limiting ear, the connecting pipe and the insert block form a snap-fit connection structure, and the surface of the limiting ear has five through grooves distributed in an annular manner, and the shape and size of the through grooves are consistent with the insert block.
[0006] In order to utilize the first bolt to fix the connection position of the connecting pipe and the extension rod, as a preferred diesel engine cylinder head valve leak testing device of the utility model, the connecting pipe, the first bolt and the extension rod form a threaded connection structure, the surface of the extension rod has thread grooves arranged at equal intervals to match the first bolt, and the extension rod, the second rotating shaft and the intake pipe form a rotating connection structure.
[0007] In order to make it possible to clamp and fix cylinder heads of different models by adjusting the position of the clamping block, as a preferred diesel engine cylinder head valve leak testing device of the utility model, the top surface of the placement table is slidably connected to the clamping block, the surface of the clamping block is laterally penetrated and connected to the second bolt, the surface of the second bolt is laterally penetrated and connected to the placement table, and the surface of the clamping block is slidably connected to the rubber plate.
[0008] In order to utilize the second bolt to fix the position of the clamping block, as a preferred diesel engine cylinder head valve leak testing device of the utility model, the placement table, the clamping block and the second bolt form a threaded connection structure, and two groups of thread grooves with equal spacing on the surface of the placement table are provided with a shape and size that matches the second bolt.
[0009] In order to make the clamping block fix the cylinder head more stably, as a preferred diesel engine cylinder head valve leak testing device of the utility model, the clamping block and the rubber plate form a sliding connection structure, and two groups of sliding grooves are opened on the inner wall surface of the clamping block, and the shape and size of the grooves are consistent with the protrusions on one side of the rubber plate.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] Through the cooperation of the first rotating shaft and the second rotating shaft installed on the extension plate and the connecting pipe and the extension rod, the position of the air intake pipe can be adjusted and fixed conveniently, so as to automatically fix the position of the air intake pipe, freeing the hands of the workers and improving the efficiency of the inspection work;
[0012] Two sets of clamping blocks slidably connected on the placement table are used to clamp the cylinder head according to the size movement position of the cylinder head to be inspected. At the same time, the rubber plate slidably connected to the inner wall of the clamping block makes the clamping more stable, avoiding the displacement of the cylinder head when the upper pressure plate is pressed down to affect subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;
[0017] Figure 4 It is a schematic diagram of the enlarged cross-sectional structure of the connecting pipe and the extension rod of the utility model;
[0018] Figure 5 For the utility model Figure 3 A schematic diagram of the enlarged structure of part A.
[0019] In the figure: 1. Leak detector body; 2. Support frame; 3. Placement table; 4. Extension plate; 5. Limiting ear; 6. First rotating shaft; 7. Connecting pipe; 8. Insert block; 9. First bolt; 10. Extension rod; 11. Second rotating shaft; 12. Inlet pipe; 13. Clamping block; 14. Second bolt; 15. Rubber sheet. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-5 The utility model provides the following technical solutions: a diesel engine cylinder head valve leak test device, comprising: a leak detector body 1, a support frame 2 fixedly installed on the surface of the leak detector body 1, a placement table 3 fixedly connected to the surface of the leak detector body 1, an extension plate 4 fixedly connected to the surface of the support frame 2, a limiting ear 5 connected to the bottom surface of the extension plate 4, a surface of the limiting ear 5 transversely penetrates and connects to a first rotating shaft 6, a surface of the first rotating shaft 6 transversely penetrates and connects to a connecting pipe 7, a surface of the connecting pipe 7 transversely penetrates and connects to an insert block 8, a surface of the insert block 8 transversely penetrates and connects to the limiting ear 5, a lower end surface of the connecting pipe 7 transversely penetrates and connects to a first bolt 9, a surface of the first bolt 9 transversely penetrates and connects to an extension rod 10, a lower end surface of the extension rod 10 transversely penetrates and connects to a second rotating shaft 11, and a surface of the second rotating shaft 11 transversely penetrates and connects to an intake pipe 12.
[0022] Preferably, the limiting ear 5, the first rotating shaft 6 and the connecting tube 7 form a rotating connection structure, the limiting ear 5, the connecting tube 7 and the plug block 8 form a snap connection structure, and the surface of the limiting ear 5 is annularly distributed with five through grooves whose shape and size are consistent with the plug block 8.
[0023] During specific use, the first rotating shaft 6 connected between the limiting ear 5 and the connecting tube 7 is used to rotate and adjust the angle of the connecting tube 7, and the insert block 8 is fixed on the connecting tube 7 through the through groove at the corresponding position of the surface of the limiting ear 5 to fix the position of the connecting tube 7 on the limiting ear 5.
[0024] Preferably, the connecting pipe 7, the first bolt 9 and the extension rod 10 form a threaded connection structure, the surface of the extension rod 10 is provided with thread grooves at equal intervals to match the first bolt 9, and the extension rod 10, the second rotating shaft 11 and the intake pipe 12 form a rotating connection structure.
[0025] During specific use, the extension rod 10 is moved up and down on the connecting pipe 7 to adjust the height of the air inlet pipe 12 according to the position of the air inlet. After the adjustment is completed, the first bolt 9 is passed through the connecting pipe 7 and fixed in the threaded groove at the corresponding position on the surface of the extension rod 10.
[0026] Preferably: the top surface of the placement table 3 is slidably connected to the clamping block 13 , the surface of the clamping block 13 is laterally penetrated and connected to the second bolt 14 , the surface of the second bolt 14 is laterally penetrated and connected to the placement table 3 , and the surface of the clamping block 13 is slidably connected to the rubber plate 15 .
[0027] During specific use, according to the model and size of the diesel engine cylinder head valve, the two groups of clamping blocks 13 are slid on the placement table 3 and the rubber plates 15 slidably connected on the clamping blocks 13 are abutted against the cylinder head, and the second bolts 14 are passed through the threaded grooves at the corresponding positions on the surface of the placement table 3 and fixed to the clamping blocks 13 so as to fix the position of the clamping blocks 13 on the placement table 3.
[0028] Preferably, the placement platform 3 , the clamping block 13 and the second bolt 14 form a threaded connection structure, and two groups of thread grooves are evenly spaced on the surface of the placement platform 3 , and the shape and size of the thread grooves are consistent with the second bolt 14 .
[0029] When in use, the second bolt 14 is passed through the threaded groove at the corresponding position on the surface of the placement table 3 and fixed on the clamping block 13 so as to fix the position of the clamping block 13 on the placement table 3 .
[0030] Preferably, the clamping block 13 and the rubber plate 15 form a sliding connection structure, and the inner wall surface of the clamping block 13 is provided with two groups of sliding grooves whose shapes and sizes are consistent with the protrusions on one side of the rubber plate 15 .
[0031] When in use, the protrusions on the surface of the rubber sheet 15 are moved in the slide grooves on the surface of the clamping block 13 to facilitate replacement of the new rubber sheet 15 .
[0032] Working principle: When it is necessary to conduct a leak test on the diesel engine cylinder head valve, the cylinder head to be tested is placed on the placement table 3, and then the two sets of clamping blocks 13 are slid on the placement table 3 according to the model and size of the cylinder head, and the rubber plate 15 slidably connected on the clamping block 13 is used to abut against the cylinder head, and the second bolt 14 is used to penetrate the threaded groove at the corresponding position on the surface of the placement table 3 and fixed on the clamping block 13 to fix the position of the clamping block 13 on the placement table 3. At this time, the position of the cylinder head is fixed and the upper pressure plate can be used to press down and fix the position of the cylinder head, and then the extension rod 10 is moved up and down on the connecting pipe 7 according to the position of the air inlet to adjust the height of the intake pipe 12. After the adjustment is completed, the first bolt 9 is used to penetrate through The connecting pipe 7 is fixed in the threaded groove at the corresponding position of the surface of the extension rod 10, and then the angle of the connecting pipe 7 is rotated and adjusted according to the position of the air inlet by using the first rotating shaft 6 connected between the limiting ear 5 and the connecting pipe 7, and the plug block 8 is passed through the through groove at the corresponding position of the surface of the limiting ear 5 and fixed on the connecting pipe 7 so as to fix the position of the connecting pipe 7 on the limiting ear 5, and then the bottom (11) is used to make the air intake pipe 12 rotate and adjust the air intake angle, so that the position of the air intake pipe 12 is fixed by using the connecting pipe 7 and the extension rod 10, which is convenient for using the equipment to fix the position of the air intake pipe 12, freeing the hands of the inspection personnel and improving the inspection work efficiency. This is the characteristic of a diesel engine cylinder head valve leak test device.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A diesel engine cylinder head valve leak testing device, comprising: The leak detector body (1) is characterized in that: a support frame (2) is fixedly installed on the surface of the leak detector body (1), the surface of the leak detector body (1) is fixedly connected to a placement table (3), the surface of the support frame (2) is fixedly connected to an extension plate (4), the bottom surface of the extension plate (4) is connected to a limiting ear (5), the surface of the limiting ear (5) is transversely penetrated and connected to a first rotating shaft (6), the surface of the first rotating shaft (6) is transversely penetrated and connected to a connecting pipe (7), the surface of the connecting pipe (7) is transversely penetrated and connected to an insert block (8), the surface of the insert block (8) is transversely penetrated and connected to the limiting ear (5), the lower end surface of the connecting pipe (7) is transversely penetrated and connected to a first bolt (9), the surface of the first bolt (9) is transversely penetrated and connected to an extension rod (10), the lower end surface of the extension rod (10) is transversely penetrated and connected to a second rotating shaft (11), and the surface of the second rotating shaft (11) is transversely penetrated and connected to an intake pipe (12).
2. A diesel engine cylinder head valve leak testing device according to claim 1, characterized in that: The limiting ear (5), the first rotating shaft (6) and the connecting tube (7) form a rotating connection structure, the limiting ear (5), the connecting tube (7) and the insert block (8) form a snap-fit connection structure, and the limiting ear (5) has five through grooves annularly distributed on the surface thereof, the shape and size of which are consistent with those of the insert block (8).
3. A diesel engine cylinder head valve leak testing device according to claim 1, characterized in that: The connecting pipe (7), the first bolt (9) and the extension rod (10) form a threaded connection structure; the surface of the extension rod (10) is provided with thread grooves at equal intervals corresponding to the first bolt (9); the extension rod (10), the second rotating shaft (11) and the air intake pipe (12) form a rotating connection structure.
4. A diesel engine cylinder head valve leak testing device according to claim 1, characterized in that: The top surface of the placement platform (3) is slidably connected to the clamping block (13), the surface of the clamping block (13) is laterally penetrated and connected to the second bolt (14), the surface of the second bolt (14) is laterally penetrated and connected to the placement platform (3), and the surface of the clamping block (13) is slidably connected to the rubber plate (15).
5. A diesel engine cylinder head valve leak testing device according to claim 4, characterized in that: The placement platform (3), the clamping block (13) and the second bolt (14) form a threaded connection structure, and two groups of thread grooves are provided at equal intervals on the surface of the placement platform (3) and have a shape and size that match the second bolt (14).
6. A diesel engine cylinder head valve leak testing device according to claim 4, characterized in that: The clamping block (13) and the rubber plate (15) form a sliding connection structure, and the inner wall surface of the clamping block (13) is provided with two groups of sliding grooves whose shapes and dimensions are consistent with the protrusions on one side of the rubber plate (15).