Engine cylinder cover air tightness detection device

Abstract

The utility model relates to the field of engines, in particular to an air tightness detection device for an engine cylinder cover. The device comprises a bottom plate, a supporting column arranged at the top of the bottom plate, a top plate arranged at the top of the supporting column, a blocking mechanism, a clamping mechanism and a sliding block. The plugging mechanism is arranged on the top plate; the clamping mechanism is arranged at the top of the bottom plate; the sliding block is slidably arranged on the plugging mechanism, a plugging piece is arranged at the bottom of the sliding block, and a first spring is arranged on the outer side of the plugging piece. Through the arrangement of the plugging mechanism, the sliding block is moved according to the position of the engine cylinder cover, so that the plugging piece is located right above each hole channel, then the first air cylinder drives the plugging piece to plug each hole channel, and therefore it can be ensured that the plugging piece is completely attached to a cylinder cover connector through mechanical positioning or sensor feedback; detection errors caused by poor sealing are avoided, and the plugging piece can be more fit with the cylinder cover in shape under the action of the first spring, so that the plugging effect is better, and the detection result is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engine, especially a kind of engine cylinder cover air tightness detection device. BACKGROUND

[0002] Automobile engine is the device for providing power for automobile, is the heart of automobile, determines the power performance, economy, stability and environmental protection of automobile.According to the different power sources, automobile engine can be divided into diesel engine, gasoline engine, electric vehicle motor and hybrid power, etc., wherein after engine cylinder cover production is completed, the sealing of the air passage inside engine cylinder cover needs to be detected by air tightness detection device.

[0003] The Chinese patent with publication number CN219015570U discloses an engine cylinder cover air passage air tightness detection device, which comprises a support frame, a clamping groove is formed in the top and bottom inner walls of the support frame, a belt transmission structure is slidably connected to the inner wall of the clamping groove, a servo motor is bolted to the outer wall of one side of the support frame, a lifting rod is slidably connected to 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 with the bottom of the support frame.The utility model puts the engine cylinder cover into the top of the belt transmission structure through the cylinder cover support structure, then the belt transmission structure drives the engine cylinder cover to move to the top of the cylinder cover support structure, the cylinder cover structure pushes the engine cylinder cover to move upward and adhere to the inflation structure, the inflation structure inflates the air passage in the engine cylinder cover, the air pressure detector detects the air pressure in the air passage to determine the internal sealing strength of the engine cylinder cover.

[0004] However, the above-mentioned disclosed scheme has the following disadvantages: the existing engine cylinder cover air tightness detection device cannot adjust the position of each plugging piece according to the model of the cylinder cover, and different plugging pieces need to be replaced each time to ensure the plugging effect, which increases the detection time, and the device cannot clamp different models of cylinder cover in all directions, which reduces the applicability of the device. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problem that the position of the plugging piece cannot be accurately adjusted according to the model of the cylinder cover and different models of the cylinder cover cannot be clamped stably in all directions in the background art, and proposes an engine cylinder cover air tightness detection device.

[0006] The technical scheme of the utility model: an engine cylinder cover air tightness detection device, which comprises a bottom plate, a support column arranged on the top of the bottom plate and a top plate arranged on the top of the support column; further comprising:

[0007] A plugging mechanism is arranged on the top plate and used for plugging and positioning each hole on different models of engine cylinder cover.

[0008] The clamping mechanism is arranged on the top of the bottom plate and is used for omnibearing synchronous clamping of different types of engine cylinder heads;

[0009] The sliding block is arranged on the blocking mechanism in a sliding manner, the bottom of the sliding block is provided with a blocking piece, the outer side of the blocking piece is provided with a spring one, the position is adjusted according to the hole of the engine cylinder head of different types by sliding the sliding block on the blocking mechanism, then the blocking mechanism is started to drive the blocking piece to move, because the engine cylinder head is arc-shaped, and each hole is not in the same plane, the blocking piece is in contact with the top of the engine cylinder head, and each blocking piece is accurately blocked on the hole under the action of the spring one.

[0010] Preferably, the blocking mechanism comprises a blocking assembly and a fixing assembly;

[0011] The blocking assembly is arranged on the top plate and is used for moving the blocking piece above each hole and descending to block the hole;

[0012] The fixing assembly is arranged on the blocking assembly and is used for fixing after the blocking assembly is adjusted according to the position of the hole.

[0013] Preferably, the blocking assembly comprises a cylinder one, a push rod one, a guide table and a positioning groove;

[0014] The cylinder one is arranged on the top of the top plate, the push rod one is arranged on the output end of the cylinder one, the guide table is arranged on the bottom of the push rod one, the positioning groove is arranged on the guide table, and the inner side of the positioning groove and the outer side of the sliding block are in sliding connection.

[0015] Preferably, the fixing assembly comprises a connecting block, a plug rod, a spring two and a positioning hole;

[0016] The connecting block is arranged on the side surface of the sliding block, the positioning hole is located on the side surface of the positioning groove, the plug rod is arranged on the connecting block in a sliding manner, and the outer side of the plug rod is provided with the spring two.

[0017] Preferably, the clamping mechanism comprises a blowing pipe, a gas pump and a moving assembly;

[0018] The gas pump is arranged on the top of the bottom plate, and the blowing pipe is arranged on the output end of the gas pump;

[0019] The moving assembly is arranged on the mounting plate and is used for synchronous movement in four directions to clamp the engine cylinder head;

[0020] Preferably, the moving assembly comprises a support plate, a mounting plate, a sliding groove and a cylinder two;

[0021] A support plate is set on the top of the base plate, a mounting plate is set on the top of the support plate, a sliding groove is set on the mounting plate, a second cylinder is set on the side of the support plate, a second push rod is set at the output end of the cylinder, a push block is set at the end of the second push rod away from the cylinder, a sliding member is set on the side of the push block, a sliding plate is set on the side of the sliding member away from the push block, a linkage member is set on the side of the sliding plate away from the sliding member, an arc-shaped clamping plate is set on the side of the linkage member away from the sliding member, an L-shaped rod is rotatably set on the sliding member, and a rotating plate is rotatably set on the end of the L-shaped rod away from the sliding member.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] 1. By setting up the sealing mechanism, the sliding block moves according to the position of the engine cylinder head, so that the sealing part is located directly above each channel. Then, cylinder one drives the sealing part to seal each channel. This can ensure that the sealing part and the cylinder head interface are completely fitted through mechanical positioning or sensor feedback, avoiding detection errors caused by poor sealing. It realizes automatic switching of the sealing part position, improves detection efficiency, and the action of spring one can make the sealing part fit the shape of the cylinder head more closely, thus making the sealing effect better and the detection results more accurate.

[0024] 2. Through the clamping mechanism, the cylinder drives four arc-shaped clamping plates to move synchronously, thereby clamping cylinder heads of different models in all directions. This allows for the fixation of multiple areas at once, shortening the clamping time and improving the efficiency of testing. Furthermore, the operator only needs to load the cylinder head and start the program, avoiding repeated adjustments to the clamping position, reducing labor intensity, and controlling the pressure at each clamping point to prevent cylinder head deformation due to excessive local pressure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the sealing mechanism;

[0027] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0028] Figure 4 This is a schematic diagram of the clamping mechanism.

[0029] Reference numerals: 1. Base plate; 2. Support column; 3. Top plate; 401. Cylinder 1; 402. Push rod 1; 403. Guide platform; 404. Positioning groove; 405. Sliding block; 406. Sealing component; 407. Spring 1; 408. Connecting block; 409. Insert rod; 410. Spring 2; 411. Positioning hole; 501. Mounting plate; 502. Support plate; 503. Slide groove; 504. Rotating plate; 505. Air pump; 506. Linkage component; 507. Arc-shaped clamp; 508. Cylinder 2; 509. Push rod 2; 510. Push block; 511. Sliding component; 512. L-shaped rod; 513. Sliding plate; 514. Air blowing pipe. Detailed Implementation

[0030] Example 1

[0031] like Figures 1-3 As shown, the present invention proposes an engine cylinder head air tightness testing device, which includes a base plate 1, a support column 2 disposed on the top of the base plate 1, a top plate 3 disposed on the top of the support column 2, a sealing mechanism, a clamping mechanism, and a sliding block 405.

[0032] The sealing mechanism is installed on the top plate 3 and is used to seal and position the various holes on the cylinder head of different engine models.

[0033] The clamping mechanism is located on the top of the base plate 1 and is used to clamp different models of engine cylinder heads synchronously from all directions.

[0034] The sliding block 405 is slidably mounted on the sealing mechanism. A sealing element 406 is provided at the bottom of the sliding block 405, and a spring 407 is provided on the outer side of the sealing element 406. The position of the sliding block 405 is adjusted according to the holes of different models of engine cylinder heads by sliding on the sealing mechanism. Then, the sealing mechanism is activated to move the sealing element 406. Since the engine cylinder head is a curved surface, and each hole is not on the same plane, after the sealing element 406 contacts the top of the engine cylinder head, the spring 407 makes each sealing element 406 accurately seal the hole.

[0035] The sealing mechanism includes a sealing component and a fixing component; the sealing component is disposed on the top plate 3 and is used to move the sealing element 406 above each channel and lower it to seal the channel; the fixing component is disposed on the sealing component and is used to fix the sealing component after it has been adjusted according to the channel position. The sealing assembly includes a cylinder 401, a push rod 402, a guide platform 403, and a positioning groove 404. The cylinder 401 is located at the top of the top plate 3, the push rod 402 is located at the output end of the cylinder 401, the guide platform 403 is located at the bottom of the push rod 402, the positioning groove 404 is located on the guide platform 403, and three sliding blocks 405 are arranged in a ring around the positioning groove 404. The positioning groove 404 is a circular groove, and the three positioning grooves 404 are equidistantly arranged on the guide platform 403. The inner side of the positioning groove 404 and the outer side of the sliding block 405 are slidably connected. When the cylinder 401 is activated, the cylinder 401 drives the guide platform 403 to move through the push rod 402, thereby performing the sealing work. The fixing assembly includes a connecting block 408, a plug rod 409, a second spring 410, and a positioning hole 411. The connecting block 408 is disposed on the side of the sliding block 405, and the positioning hole 411 is located on the side of the positioning groove 404. A ring of positioning holes 411 is arranged on the side of each positioning groove 404. The plug rod 409 is slidably disposed on the connecting block 408. A second spring 410 is disposed on the outer side of the plug rod 409. Pulling the plug rod 409 causes it to disengage from the positioning hole 411. At this time, the sliding block 405 can be moved. After the sealing member 406 is moved to the appropriate position by the sliding block 405, the plug rod 409 is released. Under the action of the first spring 407, the plug rod 409 is inserted into the positioning hole 411 at that position, thereby fixing the sealing member 406.

[0036] Example 2

[0037] like Figures 1-4 As shown, the present invention proposes an engine cylinder head airtightness testing device. Compared with Embodiment 1, this embodiment details the structure of the clamping mechanism.

[0038] The clamping mechanism includes an air blowing pipe 514, an air pump 505, and a moving assembly. The air pump 505 is located on the top of the base plate 1, and the air blowing pipe 514 is located at the output end of the air pump 505. When the air pump 505 is started, it delivers gas to the engine cylinder head through the air blowing pipe 514, thereby initiating the airtightness test. The moving assembly is located on the mounting plate 501 and is used to clamp the engine cylinder head by moving synchronously in four directions. The moving assembly includes a support plate 502, a mounting plate 501, a slide groove 503, and a second cylinder 508. The support plate 502 is located on the top of the base plate 1, the mounting plate 501 is located on the top of the support plate 502, the slide groove 503 is located on the mounting plate 501, and the second cylinder 508 is located on the side of the support plate 502. The output end of the cylinder is provided with... Push rod 2 509, push block 510 is provided at the end of push rod 2 509 away from the cylinder, slide member 511 is provided on the side of push block 510, slide plate 513 is provided on the side of slide member 511 away from push block 510, linkage member 506 is provided on the side of slide plate 513 away from slide member 511, arc-shaped clamping plate 507 is provided on the side of linkage member 506 away from slide member 511, L-shaped rod 512 is rotatably provided on slide member 511, rotating plate 504 is rotatably provided at the end of L-shaped rod 512 away from slide member 511, four L-shaped rods 512 are arranged in a ring around rotating plate 504, rotating plate 504 rotates under the drive of clamping mechanism, and during the rotation, it simultaneously drives the other three L-shaped rods 512 to rotate, thereby performing simultaneous four-directional movement clamping.

[0039] In summary, when this utility model is used, starting cylinder 2 508 causes push rod 2 509 to move. Push rod 2 509, through push block 510, causes sliding member 511 to move. When sliding member 511 moves, it causes rotating plate 504 to rotate through L-shaped rod 512. This causes rotating plate 504 to rotate the other three L-shaped rods 512, thereby causing the other three sliding members 511 connected to L-shaped rods 512 to slide in the slide groove 503 through sliding plate 513 and connecting block 408. The four connecting blocks 408 respectively drive the four arc-shaped clamping plates 507 to move synchronously, thereby clamping the engine cylinder head in all directions. After clamping is completed, pull insert rod 40 9. After disengaging the sealing member 406 from the positioning hole 411, the sliding block 405 moves the sealing member 406 to the appropriate position and then the insertion rod 409 is released. The insertion rod 409 is inserted into the positioning hole 411 at the position under the action of the spring 407. Then, the cylinder 401 is started. The cylinder 401 drives the guide table 403 to move through the push rod 402. The guide table 403 drives all the sealing members 406 to move onto the channel. And through the action of the spring 407, the sealing members 406 are pressed onto the channel, thereby performing the sealing work. Finally, the air pump 505 is started. The air pump 505 delivers gas to the engine cylinder head through the air blowing pipe 514, thereby starting the air tightness test.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An engine cylinder head airtightness testing device, comprising a base plate (1), a support column (2) disposed on the top of the base plate (1), and a top plate (3) disposed on the top of the support column (2); characterized in that, Also includes: The sealing mechanism is set on the top plate (3) and is used to seal and position the various holes on the cylinder head of different models of engines. The clamping mechanism is located on the top of the base plate (1) and is used to clamp the cylinder heads of different models of engines in all directions simultaneously. And a sliding block (405), which is slidably set on the sealing mechanism. A sealing element (406) is set at the bottom of the sliding block (405), and a spring (407) is set on the outside of the sealing element (406). The position is adjusted according to the holes of different models of engine cylinder heads by sliding the sliding block (405) on the sealing mechanism. Then the sealing mechanism is started to drive the sealing element (406) to move. Since the engine cylinder head is an arc surface, and each hole is not on the same plane, after the sealing element (406) contacts the top of the engine cylinder head, under the action of the spring (407), each sealing element (406) is accurately sealed on the hole.

2. The engine cylinder head airtightness testing device according to claim 1, characterized in that, The sealing mechanism includes sealing components and fixing components; The sealing assembly is mounted on the top plate (3) for moving the sealing element (406) above each channel and lowering it to seal the channel; The fixing component is installed on the sealing component and is used to fix the sealing component after it has been adjusted according to the position of the channel.

3. The engine cylinder head airtightness testing device according to claim 1, characterized in that, The sealing assembly includes a cylinder (401), a push rod (402), a guide plate (403), and a positioning groove (404); Cylinder 1 (401) is located at the top of the top plate (3), push rod 1 (402) is located at the output end of cylinder 1 (401), guide table (403) is located at the bottom of push rod 1 (402), positioning groove (404) is located on guide table (403), and the inner side of positioning groove (404) and the outer side of sliding block (405) are slidably connected.

4. The engine cylinder head airtightness testing device according to claim 3, characterized in that, The fixing assembly includes a connecting block (408), a plug rod (409), a second spring (410), and a positioning hole (411); The connecting block (408) is located on the side of the sliding block (405), the positioning hole (411) is located on the side of the positioning groove (404), the connecting block (408) is slidably provided with a plug rod (409), and a spring (410) is provided on the outside of the plug rod (409).

5. The engine cylinder head airtightness testing device according to claim 1, characterized in that, The clamping mechanism includes an air pipe (514), an air pump (505), and a moving assembly; An air pump (505) is located on the top of the base plate (1), and an air blowing pipe (514) is located at the output end of the air pump (505). The movable component is mounted on the mounting plate (501) and is used to clamp the engine cylinder head by moving synchronously in four directions.

6. The engine cylinder head airtightness testing device according to claim 5, characterized in that, The moving assembly includes a support plate (502), a mounting plate (501), a slide (503), and a second cylinder (508); A support plate (502) is disposed on the top of the base plate (1), a mounting plate (501) is disposed on the top of the support plate (502), a slide groove (503) is disposed on the mounting plate (501), a second cylinder (508) is disposed on the side of the support plate (502), a second push rod (509) is disposed at the output end of the cylinder, a push block (510) is disposed at the end of the second push rod (509) away from the cylinder, and a sliding member (511) is disposed on the side of the push block (510). (511) A sliding plate (513) is provided on the side away from the push block (510). A linkage (506) is provided on the side of the sliding plate (513) away from the sliding member (511). An arc-shaped clamp (507) is provided on the side of the linkage (506) away from the sliding member (511). An L-shaped rod (512) is rotatably provided on the sliding member (511). A rotating plate (504) is rotatably provided at the end of the L-shaped rod (512) away from the sliding member (511).

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