Forklift axle housing airtightness test tool

Abstract

The utility model discloses a forklift axle housing airtightness test tool, which relates to the technical field of axle housing detection and comprises a water tank, a lifting mechanism is arranged on the inner side of the water tank, and a positioning frame, a first plugging mechanism and a second plugging mechanism are fixedly mounted at the upper end of the lifting mechanism respectively. By the adoption of the structure, the forklift axle housing is sealed and fixed on the positioning frame of the mounting plate through the first plugging mechanism and the second plugging mechanism, then the axle housing is moved to the bottom of the water tank through the mounting plate, and after the water tank is filled with water, air is injected into the axle housing through the air guide pipe; more comprehensive air leakage test can be performed on the axle housing according to the water surface condition of the water tank, so that the air tightness test efficiency of the axle housing can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of axle housing detection, in particular to an airtightness testing tool for a forklift axle housing. Background Art

[0002] The axle housing is the base upon which the final drive, differential, axles, and wheels are mounted. Its primary function is to support and protect these components. Generally speaking, the axle housing of a conventional non-disconnecting drive axle is a rigid hollow beam supported by the left and right drive wheels. The final drive, differential, axles, and other transmission components are housed within it. The axle housing is connected to the vehicle frame or carriage via longitudinal leaf springs. As a crucial component of the drive axle and a key element of the running system, forklift axle housings typically undergo airtightness testing during repair, processing, or production.

[0003] After searching, the Chinese patent with the announcement number CN218847533U discloses a bridge housing air tightness detection device, including a frame, a placement platform is provided in the middle of the frame, shaft tube support frames are symmetrically provided on the left and right sides of the placement platform, and shaft tube blocking mechanisms are symmetrically provided on the left and right sides of the two shaft tube support frames. An air inlet is provided in the middle of the placement platform, an air inlet pipe is plugged into the lower part of the air inlet, and the other end of the air inlet pipe is connected to the air source through a valve. An annular sealing ring is fixedly connected to the placement platform outside the air inlet, and three installation grooves are provided in the shape of a right triangle on the inner side of the annular sealing ring and near the annular sealing ring on the placement platform, and the bridge housing clamping mechanism is installed in each of the installation grooves.

[0004] The bridge housing air tightness detection device in the above-mentioned prior art introduces air into the bridge housing through an air source and uses soapy water to spray to detect whether there is air leakage at the weld. Although the bridge housing can also be tested, this traditional testing method has poor coverage of the spray gap, which easily leads to some tiny gaps that cannot be effectively discovered and detected. Therefore, the detection effect is still not objective and comprehensive enough. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a forklift axle housing airtightness testing tool to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A forklift axle housing air tightness test tool comprises a water tank, a lifting mechanism is provided on the inner side of the water tank, and a positioning frame, a first blocking mechanism and a second blocking mechanism are fixedly mounted on the upper end of the lifting mechanism;

[0008] The lifting mechanism includes a mounting groove, the mounting groove is symmetrically arranged on the inner side of the water tank, the inner side of the mounting groove is rotatably connected to the first screw, the outer side of the first screw is threadedly connected to the same mounting plate, the positioning frame, the first blocking mechanism and the second blocking mechanism are all fixedly mounted on the upper end of the mounting plate, the inner side of the mounting plate is provided with a leakage hole, the mounting plate is slidably connected to the inner side of the water tank, the lower end of the water tank is provided with a transmission groove, the right end of the water tank is fixedly mounted on the motor, the inner side of the transmission groove is rotatably connected to a shaft rod, one end of the shaft rod penetrates the transmission groove wall and is fixedly mounted on the output end of the motor, the lower end of the first screw extends into the transmission groove and is fixedly mounted on the first bevel gear, the outer side of the shaft rod is fixedly mounted, and the first bevel gear and the second bevel gear are meshedly connected;

[0009] The first blocking mechanism includes a bracket, the bracket is fixedly mounted on the upper end of the mounting plate, a lifting plate is slidably connected to the outer side of the bracket, a second screw is threadedly connected to the inner side of the upper end of the bracket, a rotary disk is fixedly mounted on the upper end of the second screw, a lower end of the second screw is threaded through the bracket frame wall and is rotatably connected to the upper end of the lifting plate, a sealing cover is fixedly mounted on the lower end of the lifting plate, and an air guide tube is fixedly mounted on the inner side of the sealing cover;

[0010] The second sealing mechanism includes a support, which is symmetrically fixedly mounted on the upper end of the mounting plate, the upper end of the support is slidably connected to a clamping block, the inner side of the support is rotatably connected to a third screw, one end of the third screw is fixedly mounted with a rotating block, the other end of the third screw is threadedly connected to the clamping block, and the opposite surfaces of the clamping block are provided with sealing grooves.

[0011] As an optimal technical solution, a dovetail block is symmetrically fixedly installed on the lower end of the clamping block, and the clamping block is slidably connected to the support through the dovetail block.

[0012] As an optimal technical solution, the shape of the bracket is L-shaped, and a sliding groove is symmetrically opened on the outside of the bracket. One end of the lifting plate is slidably connected to the inner side of the sliding groove. A limiting sleeve is fixedly installed on the outside of the bracket, and the end of the air guide tube away from the sealing cover movably passes through the limiting sleeve.

[0013] As an optimal technical solution, a mounting block is symmetrically fixedly installed on the outer side of the mounting plate, and the mounting plate is threadedly connected to the outer side of the first screw rod through the mounting block. An assembly groove is symmetrically opened on the inner side of the water tank, and a sliding rod is fixedly installed on the inner side of the assembly groove. A slider is fixedly installed on the outer side of the mounting plate, and the slider is slidably connected to the outer side of the sliding rod.

[0014] As an optimal technical solution, an axle seat is symmetrically fixedly installed on the inner side of the transmission groove, and the shaft is rotatably connected to the inner side of the axle seat.

[0015] As an optimal technical solution, pillars are symmetrically fixedly installed on the lower end of the water tank, lockable shift wheels are fixedly installed on the lower ends of the pillars, and a push handle is welded on the left end of the water tank.

[0016] In summary, the present invention has the following beneficial effects:

[0017] First, the forklift axle housing is sealed and fixed on the positioning frame of the mounting plate through the first and second sealing mechanisms. The axle housing is then moved to the bottom of the water tank through the mounting plate. When the water tank is filled with water, air is injected into the axle housing through the air guide pipe. Combined with the water level in the water tank, a more comprehensive air leakage test can be performed on the axle housing, thereby greatly improving the efficiency of the axle housing air tightness test.

[0018] Second, the shaft is driven to rotate in the transmission groove through the output end of the motor, and the second bevel gear on the shaft engages with the first bevel gear to drive the first screw, so that the first screw connected to the first bevel gear rotates in the water tank. Since the two first screws in the water tank rotate synchronously, the mounting plate connected by the outer thread can be raised from the bottom of the water tank, so that the tester can fix the bridge housing on the mounting plate conveniently; after the test, by raising the mounting plate, water can be passed through the leakage hole on the mounting plate during the rising process of the mounting plate to reduce resistance, and the mounting plate rising from the water in the water tank can further facilitate the tester to quickly remove the bridge housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a bottom view of the sink of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the mounting plate of the utility model.

[0023] 1. Water tank; 2. Lifting mechanism; 201. Mounting plate; 202. Mounting groove; 203. First screw; 204. Motor; 205. Leakage hole; 206. Transmission groove; 207. Shaft; 208. First bevel gear; 209. Second bevel gear; 3. Positioning frame; 4. First blocking mechanism; 401. Bracket; 402. Second screw; 403. Turntable; 404. Lifting plate; 405. Sealing cover; 406. Air guide tube; 5. Second blocking mechanism; 501. Support; 502. Rotary block; 503. Third screw; 504. Clamping block; 505. Sealing groove; 6. Push handle; 7. Pillar; 8. Lockable shift wheel; 9. Assembly groove; 10. Slide rod; 11. Mounting block; 12. Shaft seat; 13. Slider; 14. Slide groove; 15. Limit sleeve; 16. Dovetail block. DETAILED DESCRIPTION

[0024] refer to Figures 1 to 4 The forklift axle housing air tightness test tool described in this embodiment includes a water tank 1, a lifting mechanism 2 is provided on the inner side of the water tank 1, and a positioning frame 3, a first blocking mechanism 4, and a second blocking mechanism 5 are fixedly installed on the upper end of the lifting mechanism 2. An electrical box and an air charging device are also provided on the back of the water tank 1. One end of the air guide tube 406 on the sealing cover 405 is connected to the output end of the air charging device to inflate the interior of the axle housing; a covered drain pipe is also provided on the front of the water tank 1 to facilitate drainage of the water tank 1; this product is suitable for testing slot axle housing model 30HB-111000 series;

[0025] The lifting mechanism 2 includes a mounting groove 202, which is symmetrically arranged on the inner side of the water tank 1. The inner side of the mounting groove 202 is rotatably connected to the first screw 203, and the outer side of the first screw 203 is threadedly connected to the same mounting plate 201. The positioning frame 3, the first blocking mechanism 4 and the second blocking mechanism 5 are all fixedly mounted on the upper end of the mounting plate 201. A leakage hole 205 is provided on the inner side of the mounting plate 201. The mounting plate 201 is slidably connected to the inner side of the water tank 1. A transmission groove 206 is provided at the lower end of the water tank 1. A motor 204 is fixedly mounted on the right end of the water tank 1. The inner side of the transmission groove 206 is rotatably connected to a shaft 207. One end of the shaft 207 penetrates the wall of the transmission groove 206 and is fixedly mounted on the output end of the motor 204. The lower end of the first screw 203 extends into the transmission groove 206 and is fixedly mounted with a first bevel gear 208. The outer side of the shaft 207 is fixedly mounted with a second bevel gear 209. The first bevel gear 208 and The second bevel gear 209 is meshed and connected. When the bridge housing opening needs to be blocked, it is only necessary to use the external control module to control the motor 204 so that the output end of the motor 204 drives the shaft 207 to rotate in the transmission groove 206, and the second bevel gear 209 on the shaft 207 meshes and transmits the first bevel gear 208, so that the first screw 203 connected to the first bevel gear 208 rotates in the water tank 1. Since the two first screws 203 in the water tank 1 rotate synchronously, the mounting plate 201 with the outer thread connection can be lifted from the bottom of the water tank 1, so that the tester can fix the bridge housing on the mounting plate 201 conveniently. After the test, by lifting the mounting plate 201, the leakage hole 205 on the mounting plate 201 can be used to pass water during the rising process of the mounting plate 201 to reduce resistance, and the mounting plate 201 rising from the water in the water tank 1 can further facilitate the tester to quickly remove the bridge housing.

[0026] The first blocking mechanism 4 includes a bracket 401, which is fixedly mounted on the upper end of the mounting plate 201, a lifting plate 404 is slidably connected to the outer side of the bracket 401, a second screw 402 is threadedly connected to the inner side of the upper end of the bracket 401, a rotary disk 403 is fixedly mounted on the upper end of the second screw 402, the lower end of the second screw 402 is threaded through the bracket 401 frame wall and the upper end of the lifting plate 404 is rotatably connected, and a sealing cover 405 is fixedly mounted on the lower end of the lifting plate 404. An air guide tube 406 is fixedly installed on the inner side of the cover 405. The second blocking mechanism 5 includes a support 501, which is symmetrically fixedly installed on the upper end of the mounting plate 201. The upper end of the support 501 is slidably connected to a clamping block 504. The inner side of the support 501 is rotatably connected to a third screw 503. One end of the third screw 503 is fixedly installed with a rotating block 502. The other end of the third screw 503 is threadedly connected to the clamping block 504. The opposite surface of the clamping block 504 is provided with a sealing groove 504. 5. When sealing and fixing the main opening of the axle housing, first place the axle housing on the positioning frame 3, then use the rotary disk 403 to rotate the second screw 402 to thread and extend on the bracket 401, and at the same time, the lower end of the second screw 402 rotates to push the lifting plate 404 to slide, and the lower end of the lifting plate 404 is buckled at the opening of the main part of the axle housing through the sealing cover 405, and is clamped in conjunction with the positioning frame 3. Then, operate the rotary block 502 to drive the third screw 503 to rotate on the support 501, and at the same time, the clamping block 504 connected to the outer thread of one end of the third screw 503 slides toward the axle tube of the axle housing, and the sealing groove 505 on the clamping block 504 is pressed against the axle tubes at both ends of the axle housing to complete the fixation; the sealing cover 405 is provided with a rubber seal adapted to the axle housing, which realizes the sealing of the main opening of the axle housing under the clamping and squeezing effect, and the sealing groove 505 is also provided with a rubber seal adapted to the end of the axle tube of the axle housing, which also realizes the sealing of its opening under the clamping and squeezing force of the clamping block 504.

[0027] refer to Figure 4 The lower end of the clamping block 504 is symmetrically fixed with a dovetail block 16, and the clamping block 504 is slidably connected to the support 501 through the dovetail block 16. The dovetail block 16 at the lower end of the clamping block 504 slides in the dovetail groove adapted on the support 501, which can ensure the stability of the horizontal movement of the clamping block 504.

[0028] refer to Figure 4 The shape of the bracket 401 is L-shaped, and a sliding groove 14 is symmetrically opened on the outside of the bracket 401. One end of the lifting plate 404 is slidably connected to the inner side of the sliding groove 14. A limiting sleeve 15 is fixedly installed on the outside of the bracket 401, and the end of the air guide tube 406 away from the sealing cover 405 movably passes through the limiting sleeve 15. By sliding the lifting plate 404 at the sliding groove 14 on the bracket 401, the stability of the vertical sliding of the lifting plate 404 can be guaranteed. The limiting sleeve 15 on the bracket 401 can be used to conveniently limit the air guide tube 406.

[0029] refer to Figure 4 The outer side of the mounting plate 201 is symmetrically fixed with a mounting block 11, and the mounting plate 201 is threadedly connected to the outer side of the first screw 203 through the mounting block 11. The inner side of the water tank 1 is symmetrically provided with an assembly groove 9, and the inner side of the assembly groove 9 is fixedly installed with a slide bar 10. The outer side of the mounting plate 201 is fixedly installed with a slider 13, and the slider 13 is slidably connected to the outer side of the slide bar 10. The mounting block 11 on the mounting plate 201 can facilitate the threaded connection of the mounting plate 201 to the outer side of the first screw 203, and the slider 13 of the mounting plate 201 is used to slide on the slide bar 10 in the assembly groove 9, so that the mounting plate 201 can be moved vertically up and down.

[0030] refer to Figure 3 The shaft seat 12 is symmetrically fixed on the inner side of the transmission groove 206, and the shaft rod 207 is rotatably connected to the inner side of the shaft seat 12. By rotating the shaft rod 207 in the shaft seat 12 of the transmission groove 206, the stability of the shaft rod 207 can be further ensured, and to a certain extent, the stability of the engagement of the first bevel gear 208 and the second bevel gear 209 is also guaranteed, and it is not easy to cause tooth jumping and the like.

[0031] refer to Figure 1 The lower end of the water tank 1 is symmetrically fixed with a pillar 7, and the lower end of the pillar 7 is fixed with a lockable moving wheel 8. A push handle 6 is welded to the left end of the water tank 1. By installing the pillar 7 with the lockable moving wheel 8 at the lower end of the water tank 1 and cooperating with the push handle 6, the user can conveniently move the test water tank 1.

[0032] Principle and advantages of use: During use, first, the lockable shift wheel 8 is used in conjunction with the push handle 6 to facilitate the movement of the test water tank 1. When the bridge housing opening needs to be sealed, the motor 204 only needs to be controlled by the external control module, so that the output end of the motor 204 drives the shaft 207 to rotate in the transmission groove 206, and the second bevel gear 209 on the shaft 207 engages with the first bevel gear 208 to drive the first screw 203 connected to the first bevel gear 208 to rotate in the water tank 1. Since the two first screws 203 in the water tank 1 rotate synchronously, the mounting plate 201 with the outer thread connection can be lifted from the bottom of the water tank 1.

[0033] When sealing and fixing the main opening of the bridge housing, first place the bridge housing on the positioning frame 3, and then use the turntable 403 to rotate the second screw 402 to thread and retract on the bracket 401. At the same time, the lower end of the second screw 402 rotates to push the lifting plate 404 to slide, and the lower end of the lifting plate 404 is buckled at the opening of the main part of the bridge housing through the sealing cover 405, and is clamped in conjunction with the positioning frame 3. Then, operate the rotary block 502 to drive the third screw 503 to rotate on the support 501. At the same time, the clamping block 504 with the outer thread connected to one end of the third screw 503 slides toward the bridge housing shaft tube. When the sealing groove 505 on the clamping block 504 is tightly sealed against the shaft tubes at both ends of the bridge housing, the fixation is completed. Then, sink the mounting plate 201 into the water tank 1, and inject water into the water tank 1. Then, inject air into the inside of the bridge housing through the air guide pipe 406, and the test can be carried out in accordance with the water surface conditions of the water tank 1.

Claims

1. A forklift axle housing airtightness test tool, characterized in that: It comprises a water tank (1), wherein a lifting mechanism (2) is provided on the inner side of the water tank (1), and a positioning frame (3), a first blocking mechanism (4) and a second blocking mechanism (5) are fixedly mounted on the upper end of the lifting mechanism (2); The lifting mechanism (2) comprises a mounting groove (202), the mounting groove (202) being symmetrically arranged on the inner side of the water tank (1), the inner side of the mounting groove (202) being rotatably connected to a first screw rod (203), the outer side of the first screw rod (203) being threadedly connected to the same mounting plate (201), the positioning frame (3), the first blocking mechanism (4) and the second blocking mechanism (5) being fixedly mounted on the upper end of the mounting plate (201), the inner side of the mounting plate (201) being provided with a leakage hole (205), the mounting plate (201) being slidably connected to the inner side of the water tank (1), the outer side of the water tank (1) being threadedly connected to the same mounting plate (201), the positioning frame (3), the first blocking mechanism (4) and the second blocking mechanism (5) being fixedly mounted on the upper end of the mounting plate (201), the inner side of the mounting plate (201) being provided with a leakage hole (205), the mounting plate (201) being slidably connected to the inner side of the water tank (1), the inner side of the water tank (1) being threadedly connected to the inner side of the water tank (1), the outer side of the first screw rod (203 ... A transmission groove (206) is provided at the lower end, a motor (204) is fixedly installed at the right end of the water tank (1), a shaft (207) is rotatably connected to the inner side of the transmission groove (206), one end of the shaft (207) penetrates the groove wall of the transmission groove (206) and is fixedly installed at the output end of the motor (204), the lower end of the first screw (203) extends into the transmission groove (206) and is fixedly installed with a first bevel gear (208), the outer side of the shaft (207) is fixedly installed with a second bevel gear (209), and the first bevel gear (208) and the second bevel gear (209) are meshedly connected; The first blocking mechanism (4) comprises a bracket (401), the bracket (401) is fixedly mounted on the upper end of the mounting plate (201), the outer side of the bracket (401) is slidably connected to a lifting plate (404), the inner side of the upper end of the bracket (401) is threadedly connected to a second screw (402), the upper end of the second screw (402) is fixedly mounted with a rotary disk (403), the lower end of the second screw (402) is threadedly passed through the bracket (401) frame wall and the upper end of the lifting plate (404) for rotational connection, the lower end of the lifting plate (404) is fixedly mounted with a sealing cover (405), and the inner side of the sealing cover (405) is fixedly mounted with an air guide tube (406).

2. The forklift axle housing airtightness test tool according to claim 1, characterized in that: The second blocking mechanism (5) comprises a support (501), the support (501) is symmetrically fixedly mounted on the upper end of the mounting plate (201), the upper end of the support (501) is slidably connected to a clamping block (504), the inner side of the support (501) is rotatably connected to a third screw (503), one end of the third screw (503) is fixedly mounted with a rotating block (502), the other end of the third screw (503) is threadedly connected to the clamping block (504), and opposite surfaces of the clamping block (504) are provided with sealing grooves (505).

3. The forklift axle housing airtightness test tool according to claim 2, characterized in that: A dovetail block (16) is symmetrically fixedly mounted on the lower end of the clamping block (504), and the clamping block (504) is slidably connected to the support (501) via the dovetail block (16).

4. The forklift axle housing airtightness test tool according to claim 1, characterized in that: The bracket (401) is L-shaped, and a sliding groove (14) is symmetrically opened on the outer side of the bracket (401). One end of the lifting plate (404) is slidably connected to the inner side of the sliding groove (14). A limiting sleeve (15) is fixedly installed on the outer side of the bracket (401), and one end of the air guide tube (406) away from the sealing cover (405) movably passes through the limiting sleeve (15).

5. The forklift axle housing airtightness test tool according to claim 1, characterized in that: The outer side of the mounting plate (201) is symmetrically fixedly mounted with a mounting block (11), and the mounting plate (201) is threadedly connected to the outer side of the first screw rod (203) through the mounting block (11). The inner side of the water tank (1) is symmetrically provided with an assembly groove (9), and the inner side of the assembly groove (9) is fixedly mounted with a slide bar (10). The outer side of the mounting plate (201) is fixedly mounted with a slider (13), and the slider (13) is slidably connected to the outer side of the slide bar (10).

6. The forklift axle housing airtightness test tool according to claim 1, characterized in that: An axle seat (12) is symmetrically fixedly installed on the inner side of the transmission groove (206), and the shaft (207) is rotatably connected to the inner side of the axle seat (12).

7. The forklift axle housing airtightness test tool according to claim 1, characterized in that: The lower end of the water tank (1) is symmetrically fixed with a support (7), the lower end of the support (7) is fixed with a lockable shift wheel (8), and the left end of the water tank (1) is welded with a push handle (6).

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