Airtightness detection device for flywheel housing of engine

Abstract

The utility model discloses an engine flywheel housing airtightness detection device, which belongs to the technical field of detection, and comprises a workbench, the top of the workbench is fixedly connected with a support column, the top of the support column is fixedly connected with a top plate, and the top of the top plate is provided with a detection assembly. A positioning assembly is arranged at the top of the workbench and comprises a movable frame connected to the top of the workbench in a bolted mode, a gear plate is connected to the inner side of the movable frame in an engaged mode, and a driving motor is arranged on the outer side of the gear plate. The air tightness detection device can solve the problems that an existing air tightness detection device for the flywheel housing of the engine usually needs to be readjusted when detecting the flywheel housings of different models, the flywheel housings of different models are inconvenient to quickly position and clamp, the detection efficiency is influenced, and the traditional air tightness detection device cannot detect the flywheel housings of different models due to unstable air source or lack of voltage stabilization measures. The detection air pressure fluctuation is large, and the reliability of the detection result is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection technical field especially relates to a engine flywheel housing airtightness detection device. BACKGROUND

[0002] In early engine design, power transmission is mainly through simple coupling and the like to transmit the power of engine crankshaft, with the development of industry, in order to better store the energy of engine working stroke, flywheel is introduced into engine design, and flywheel housing as the shell of flywheel, its initial main function is to protect flywheel, because flywheel can be damaged in the process of high-speed rotation if colliding with external objects or impurities enter, affect its balance and energy storage, release function.

[0003] For the above problems, the existing patent gives a solution, the existing engine flywheel housing airtightness detection device usually needs to be readjusted when detecting different models of flywheel housing, is not convenient for the quick positioning and clamping of different models of flywheel housing, affects its detection efficiency, and the traditional airtightness detection device is unstable in air source or lacks pressure stabilizing measures, resulting in large detection air pressure fluctuation, affecting the reliability of detection results.

[0004] Therefore, an engine flywheel housing airtightness detection device is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an engine flywheel housing airtightness detection device, which can solve the problems of the existing engine flywheel housing airtightness detection device, i.e., the need for readjustment when detecting different models of flywheel housing, inconvenience in quick positioning and clamping of different models of flywheel housing, and influence on detection efficiency, and the problems of the traditional airtightness detection device, i.e., unstable air source or lack of pressure stabilizing measures, resulting in large detection air pressure fluctuation and influence on the reliability of detection results.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an engine flywheel housing airtightness detection device, comprising a workbench, the top of the workbench is fixedly connected with a support column, the top of the support column is fixedly connected with a top plate, the top of the top plate is provided with a detection assembly, and the top of the workbench is provided with a positioning assembly.

[0007] The positioning assembly comprises a moving frame bolted to the top of the workbench, the inner side of the moving frame is engagedly connected with a gear plate, the outer side of the gear plate is provided with a driving motor, the top of the gear plate is fixedly connected with a telescopic air cylinder, the output end of the telescopic air cylinder is fixedly connected with a support plate, the top of the support plate is threadedly connected with an adjusting rod, the bottom of the adjusting rod is fixedly connected with a positioning block, and the bottom of the positioning block is bonded with a buffer pad.

[0008] Preferably, the top of the top plate is fixedly connected with an air compressor, an output end of the air compressor is fixedly connected with a conveying pipe, a front side of the conveying pipe is communicated with a gas storage tank, and the gas storage tank is bolted to the top plate.

[0009] Preferably, a pressure regulating valve is arranged on the front side of the gas storage tank, a connecting pipe is bolted to the inner side of the pressure regulating valve, a transparent sealing cover is connected to the bottom of the connecting pipe, and a pressure sensor is arranged in the transparent sealing cover.

[0010] Preferably, a hydraulic rod is bolted to the top of the top plate, and an output end of the hydraulic rod is bolted to the transparent sealing cover.

[0011] Preferably, limit blocks are bolted to the front side and the rear side of the transparent sealing cover, an auxiliary block is slidably connected to the outer side of the support column, a fixing rod is fixedly connected to the inner side of the auxiliary block, and the limit blocks are clamped to the fixing rod.

[0012] Preferably, a connecting rod is threadedly connected to the top of the support plate, and a suction disc is fixedly connected to the bottom of the connecting rod.

[0013] Preferably, a sealing ring is bonded to the top of the workbench, and the sealing ring is made of rubber.

[0014] Preferably, a support leg is fixedly connected to the bottom of the workbench, and an antiskid pad made of rubber is bonded to the bottom of the support leg.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The positioning assembly can realize accurate positioning of the telescopic air cylinder in the horizontal direction, and can quickly adjust the flywheel shell of different models and sizes to the appropriate position, so that the subsequent clamping operation is more accurate, and high-precision positioning in all directions is realized.

[0017] 2. The detection assembly can accurately adjust the air pressure in the connecting pipe according to different detection requirements, so that the detection air pressure is always maintained within the set standard range, the accuracy and reliability of the air tightness detection are improved, the entire detection process has high automation degree and fast detection speed, the production efficiency can be effectively improved, and the air tightness detection production requirement of large-scale flywheel shells is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structural view of the engine flywheel shell air tightness detection device.

[0019] Figure 2 It is a cutting drawing of the positioning assembly.

[0020] Figure 3A cutaway view of the detection assembly of the present utility model;

[0021] Figure 4 This is a cutout of the mobile frame of the utility model;

[0022] Figure 5 This is a structural diagram of the support column and top plate of the utility model.

[0023] In the figure, 1. workbench; 2. support column; 3. top plate; 4. sealing ring; 5. positioning assembly; 501. moving frame; 502. gear plate; 503. drive motor; 504. telescopic cylinder; 505. support plate; 506. adjusting rod; 507. positioning block; 508. buffer pad; 6. detection assembly; 601. air compressor; 602. delivery pipe; 603. air tank; 604. pressure regulating valve; 605. connecting pipe; 606. transparent sealing cover; 607. pressure sensor; 608. hydraulic rod; 7. limit block; 8. auxiliary block; 9. fixing rod; 10. connecting rod; 11. suction cup; 12. support leg; 13. anti-slip pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-5 , this utility model provides a technical solution:

[0026] An engine flywheel housing air tightness detection device includes a workbench 1, a support column 2 is fixedly connected to the top of the workbench 1, a top plate 3 is fixedly connected to the top of the support column 2, a detection component 6 is provided on the top of the top plate 3, and a positioning component 5 is provided on the top of the workbench 1;

[0027] The positioning assembly 5 includes a movable frame 501 bolted to the top of the workbench 1, the inner side of the movable frame 501 is meshedly connected with a gear plate 502, the outer side of the gear plate 502 is provided with a driving motor 503, the top of the gear plate 502 is fixedly connected with a telescopic cylinder 504, the output end of the telescopic cylinder 504 is fixedly connected with a support plate 505, the top of the support plate 505 is threadedly connected with an adjusting rod 506, the bottom of the adjusting rod 506 is fixedly connected with a positioning block 507, and the bottom of the positioning block 507 is bonded with a buffer pad 508.

[0028] In this embodiment: by starting the drive motor 503, the drive motor 503 drives the gear plate 502 to move in the mobile frame 501, thereby adjusting the horizontal position of the telescopic cylinder 504, so as to move the telescopic cylinder 504 to a suitable position according to the size and shape of the flywheel housing to be inspected, so as to subsequently accurately position the flywheel housing, and rotate the adjusting rod 506. Since the adjusting rod 506 is threadedly connected to the support plate 505, the rotation of the adjusting rod 506 will cause it to move in the vertical direction, thereby adjusting the height of the positioning block 507, so that the positioning block 507 can adapt to the positioning requirements of flywheel housings of different heights. Then, the telescopic cylinder 504 is started, and the piston rod of the telescopic cylinder 504 is extended, pushing the support plate 505 down, and the buffer pad 508 at the bottom of the positioning block 507 first contacts the flywheel housing. The buffer pad 508 can prevent the positioning block 507 from scratching or damaging its surface when clamping the flywheel housing, and at the same time can better adapt to the surface shape of the flywheel housing to ensure the stability of positioning.

[0029] Specifically, such as Figure 3 、 Figure 5 As shown, an air compressor 601 is fixedly connected to the top of the top plate 3 , a delivery pipe 602 is fixedly connected to the output end of the air compressor 601 , and an air storage tank 603 is connected to the front side of the delivery pipe 602 , which is bolted to the top plate 3 .

[0030] Specifically, such as Figure 3 、 Figure 5 As shown, a pressure regulating valve 604 is provided on the front side of the gas storage tank 603, a connecting pipe 605 is bolted to the inner side of the pressure regulating valve 604, a transparent sealing cover 606 is connected to the bottom of the connecting pipe 605, and a pressure sensor 607 is provided inside the transparent sealing cover 606.

[0031] Specifically, such as Figure 3 、 Figure 5 As shown, a hydraulic rod 608 is bolted to the top of the top plate 3 , and an output end of the hydraulic rod 608 is bolted to the transparent sealing cover 606 .

[0032] In the embodiment, the air compressor 601 is started, the external air is compressed and delivered to the air storage tank 603 through the delivery pipe 602, the air storage tank 603 plays a role of storing and buffering the compressed air, so that the output air pressure is more stable, the air pressure fluctuation is reduced, the compressed air is stored and stabilized in the air storage tank 603, the pressure adjusting valve 604 is adjusted according to the standard air pressure value required by the flywheel shell air tightness detection, the pressure adjusting valve 604 is accurately adjusted, the air pressure in the connecting pipe 605 reaches the set value, then the hydraulic rod 608 is started, then the piston rod of the hydraulic rod 608 extends to push the transparent sealing cover 606 to descend, in the process of descending of the transparent sealing cover 606, the edge of the transparent sealing cover 606 gradually approaches the upper surface of the flywheel shell, until the transparent sealing cover 606 is tightly attached to the sealing ring 4, a sealed detection space is formed, the pressure sensor 607 in the transparent sealing cover 606 starts to monitor the air pressure change in the sealed space in real time, since the transparent sealing cover 606 is tightly attached to the sealing ring 4 through the inflation sealing ring 4, the sealing effect is guaranteed, when the flywheel shell has good air tightness, the air pressure in the sealed space will remain stable, when the flywheel shell has air tightness leakage, the air pressure in the sealed space will gradually decrease with the air leakage, so as to complete the detection of the air tightness of the flywheel shell.

[0033] Specifically, as shown in Figure 5 The front side and the rear side of the transparent sealing cover 606 are bolted with the limiting blocks 7, the outer side of the supporting column 2 is slidably connected with the auxiliary blocks 8, the inner side of the auxiliary blocks 8 is fixedly connected with the fixed rods 9, and the limiting blocks 7 are clamped with the fixed rods 9.

[0034] Specifically, as shown in Figure 4 The top of the supporting plate 505 is threadedly connected with the connecting rods 10, and the bottom of the connecting rods 10 is fixedly connected with the suction discs 11.

[0035] In the embodiment, by arranging the limiting blocks 7, the auxiliary blocks 8 and the fixed rods 9, in the process of ascending and descending of the transparent sealing cover 606, the auxiliary blocks 8 slide along the outer side of the supporting column 2, and the fixed rods 9 move with the auxiliary blocks 8, so as to limit the moving direction of the transparent sealing cover 606, to ensure that the transparent sealing cover 606 can accurately seal with the flywheel shell, to avoid the position deviation of the transparent sealing cover 606 in the process of ascending and descending, to ensure the effectiveness of the air tightness detection, by arranging the connecting rods 10 and the suction discs 11, when it is needed to further enhance the fixing effect of the flywheel shell, the connecting rods 10 are rotated to move downward on the supporting plate 505, so as to make the suction discs 11 adsorb on the upper surface of the flywheel shell, which provides additional vertical suction force, to enhance the fixing effect of the flywheel shell, to prevent the flywheel shell from being displaced in the detection process.

[0036] Specifically, as shown in Figure 1 The top of the workbench 1 is bonded with the sealing ring 4, and the sealing ring 4 is made of rubber.

[0037] Specifically, as shown in Figure 1As shown, the bottom of the workbench 1 is fixedly connected with a support leg 12, and the bottom of the support leg 12 is bonded with a non-slip pad 13 which is made of rubber.

[0038] In this embodiment: by setting the sealing ring 4, the sealing ring 4 is matched with the transparent sealing cover to play a sealing role, so as to prevent gas from leaking between the workbench 1 and the flywheel shell bottom during detection, and ensure the accuracy of the airtight detection. By setting the support leg 12 and the non-slip pad 13, the support leg 12 provides stable support for the workbench 1, ensuring that the workbench 1 does not shake or move during detection, and the non-slip pad 13 can prevent the workbench 1 from sliding during use, ensuring the safety and stability of the detection operation.

[0039] Working principle: When using the engine flywheel housing air tightness detection device, first place the flywheel housing to be detected on the workbench 1, then start the drive motor 503, and the drive motor 503 drives the gear plate 502 to move in the mobile frame 501, thereby adjusting the horizontal position of the telescopic cylinder 504, and moving the telescopic cylinder 504 to a suitable position according to the size and shape of the flywheel housing to be detected, so as to subsequently accurately position the flywheel housing, and rotate the adjusting rod 506. Since the adjusting rod 506 is threadedly connected to the support plate 505, the rotation of the adjusting rod 506 will cause it to move in the vertical direction, thereby adjusting the height of the positioning block 507, so that The positioning block 507 can adapt to the positioning requirements of flywheel housings of different heights. Then, the telescopic cylinder 504 is started, and the piston rod of the telescopic cylinder 504 is extended to push the support plate 505 down. The buffer pad 508 at the bottom of the positioning block 507 first contacts the flywheel housing. The buffer pad 508 can prevent the positioning block 507 from scratching or damaging its surface when clamping the flywheel housing. At the same time, it can better adapt to the surface shape of the flywheel housing and ensure the stability of positioning. Then, the connecting rod 10 is rotated. The connecting rod 10 is threadedly connected to the support plate 505. When rotating, the suction cup 11 at the bottom will drop, so that the suction cup 11 is adsorbed on the upper surface of the flywheel housing. The suction cup 11 can provide additional The vertical suction force prevents the flywheel housing from shifting during the inspection process, further improving the firmness of the positioning. Then, the air compressor 601 is started to compress the external air and then deliver it to the air tank 603 through the delivery pipe 602. The air tank 603 plays the role of storing and buffering the compressed air, making the output air pressure more stable and reducing air pressure fluctuations. After the compressed air is stored and stabilized in the air tank 603, the air pressure is adjusted by the pressure regulating valve 604. According to the standard air pressure value required for the air tightness inspection of the flywheel housing, the pressure regulating valve 604 is accurately adjusted to make the air pressure in the connecting pipe 605 reach the set value. Then the hydraulic rod 608 is started, and the connection As its piston rod extends, it pushes the transparent sealing cover 606 down. During the descent of the transparent sealing cover 606, its edge gradually approaches the upper surface of the flywheel housing until it fits tightly with the sealing ring 4 to form a sealed detection space. The pressure sensor 607 inside the transparent sealing cover 606 begins to monitor the air pressure changes in the sealed space in real time. Since the sealing cover fits tightly with the sealing ring 4 through the inflatable sealing ring 4, its sealing effect is guaranteed. When the airtight performance of the flywheel housing is good, the air pressure in its sealed space will remain stable. When there is an airtight leak in the flywheel housing, the air pressure in the sealed space will gradually decrease as the gas leaks to complete the airtightness detection of the flywheel housing.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An engine flywheel housing airtightness detection device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a support column (2), the top of the support column (2) is fixedly connected to a top plate (3), the top of the top plate (3) is provided with a detection component (6), and the top of the workbench (1) is provided with a positioning component (5); The positioning assembly (5) comprises a movable frame (501) bolted to the top of the workbench (1); the inner side of the movable frame (501) is meshedly connected to a gear plate (502); the outer side of the gear plate (502) is provided with a driving motor (503); the top of the gear plate (502) is fixedly connected to a telescopic cylinder (504); the output end of the telescopic cylinder (504) is fixedly connected to a support plate (505); the top of the support plate (505) is threadedly connected to an adjusting rod (506); the bottom of the adjusting rod (506) is fixedly connected to a positioning block (507); and the bottom of the positioning block (507) is bonded to a buffer pad (508).

2. The engine flywheel housing airtightness detection device according to claim 1, characterized in that: An air compressor (601) is fixedly connected to the top of the top plate (3), a delivery pipe (602) is fixedly connected to the output end of the air compressor (601), a front side of the delivery pipe (602) is connected to an air storage tank (603), and the air storage tank (603) is bolted to the top plate (3).

3. The engine flywheel housing airtightness detection device according to claim 2, characterized in that: A pressure regulating valve (604) is provided on the front side of the gas storage tank (603), a connecting pipe (605) is bolted to the inner side of the pressure regulating valve (604), a transparent sealing cover (606) is connected to the bottom of the connecting pipe (605), and a pressure sensor (607) is provided inside the transparent sealing cover (606).

4. The engine flywheel housing airtightness detection device according to claim 3, characterized in that: A hydraulic rod (608) is bolted to the top of the top plate (3), and an output end of the hydraulic rod (608) is bolted to a transparent sealing cover (606).

5. The engine flywheel housing airtightness detection device according to claim 3, characterized in that: The front and rear sides of the transparent sealing cover (606) are both bolted to a limit block (7); the outer side of the support column (2) is slidably connected to an auxiliary block (8); the inner side of the auxiliary block (8) is fixedly connected to a fixing rod (9); and the limit block (7) is clamped to the fixing rod (9).

6. The engine flywheel housing airtightness detection device according to claim 1, characterized in that: The top of the support plate (505) is threadedly connected to a connecting rod (10), and the bottom of the connecting rod (10) is fixedly connected to a suction cup (11).

7. The engine flywheel housing airtightness detection device according to claim 1, characterized in that: A sealing ring (4) is bonded to the top of the workbench (1), and the sealing ring (4) is made of rubber.

8. The engine flywheel housing airtightness detection device according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to a support leg (12), and the bottom of the support leg (12) is bonded with an anti-slip pad (13), and the anti-slip pad (13) is made of rubber.

Images