Surface treatment device for automobile power assembly

Abstract

The invention provides a surface treatment device for an automobile power assembly, and relates to the field of surface treatment for automobile power assemblies. The device comprises an operation table, the upper surfaces, close to the left end and the right end, of the operation table are fixedly connected with a rotating device and a moving device correspondingly, a grinding device is arranged on the upper surface of the operation table and located between the rotating device and the moving device, and a welding device is arranged on the upper surface of the operation table and close to the rear end; a first hinge is arranged at the rear end of the operation table, and the rear end of the operation table is movably connected with a dust cover through the first hinge. Welding slag after welding can be cleaned and polished through the welding device, a shaft tube is polished through the polishing device, integral forming is conducted, the working efficiency is improved, the pressing degree of a third spring is adjusted through an adjusting assembly, and the device can adapt to various conditions; and through cooperation of the rotating device and the moving device, testing can be conducted after grinding, and efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of surface treatment for automotive powertrains, specifically to a surface treatment apparatus for automotive powertrains. Background Technology

[0002] An automotive powertrain is the collection of all the major components in a car responsible for generating power and transmitting that power to the wheels. It includes the engine, transmission, drive shaft, differential, and wheels. In short, the powertrain's task is to efficiently transmit the power generated by the engine to the wheels, enabling the car to operate smoothly and efficiently, providing the power and control required for driving. The drive shaft is the component that transmits power from the transmission to the wheels. In rear-wheel drive or four-wheel drive systems, the drive shaft connects the engine and transmission to the rear or front axle, ensuring that power is transmitted to the wheels.

[0003] Some drive shafts consist of splines, shaft tubes, and universal joint seats, which are assembled by welding. For example, the invention patent application with publication number CN202011243261.8 discloses a drive shaft cross shaft tube welding fixture. After welding, weld slag will appear on its surface, which needs to be removed and the surface of the shaft tube needs to be ground, which is quite troublesome. Furthermore, the invention patent application with publication number CN202011286795.9 discloses an automatic steel cylinder welding device, which performs grinding before welding, but the weld seam also needs to be ground after welding, resulting in repeated grinding. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a surface treatment device for automotive powertrains, which solves the problem of not being able to promptly remove weld slag and grind the shaft tube after welding the drive shaft in the powertrain.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a surface treatment device for automotive powertrains, comprising an operating table, wherein a rotating device and a moving device are fixedly connected to the upper surfaces of the operating table near its left and right ends, a grinding device is provided on the upper surface of the operating table between the rotating device and the moving device, a welding device is provided on the upper surface of the operating table near its rear end, a first hinge is provided at the rear end of the operating table, a dust cover is movably connected to the rear end of the operating table via the first hinge, a top block is fixedly connected to the inner upper surface of the dust cover, multiple fans are provided on the upper surface of the dust cover, and multiple air outlets are correspondingly opened on the lower surface of the dust cover.

[0008] Preferably, the grinding device includes a support assembly, a limiting cover plate, a shaft tube, a snap-fit ​​assembly, a handle, a grinding assembly, a second lead screw, and a limiting arc plate. The support assembly is fixedly connected to the upper surface of the operating table. A second hinge is provided at the rear end of the support assembly. The limiting cover plate is movably connected to the upper surface of the support assembly via the second hinge. The handle is fixedly connected to the front surface of the limiting cover plate. The snap-fit ​​assembly is provided at the connection between the limiting cover plate and the support assembly. The second lead screw is rotatably connected to the inner surface of the limiting cover plate. A fourth motor is provided on the inner surface of the limiting cover plate. One end of the second lead screw is fixedly connected to the output end of the fourth motor. The grinding assembly is threadedly connected to the side surface of the second lead screw. Two limiting arc plates are provided and respectively connected to the lower surface of the limiting cover plate near both ends. The shaft tube is installed on the inner surface of the support assembly via the second lead screw.

[0009] Preferably, the buckle assembly includes a groove block, a fixing block, a lever plate, and a limiting support rod. The groove block is fixedly connected to the front surface of the limiting cover plate, the fixing block is fixedly connected to the front surface of the support assembly, the lever plate is movably connected to the side surface of the fixing block, and the limiting support rod is rotatably connected to the side surface of the lever plate. The upper end of the limiting support rod is provided with a groove corresponding to the upper end of the round rod of the limiting support rod.

[0010] Preferably, the grinding assembly includes a sliding block, a threaded rotating rod, a first sliding rod, a sliding plate, a grinding block, and a first spring. The sliding block is threadedly connected to the side surface of the second lead screw, the threaded rotating rod is threadedly connected to the inner surface of the sliding block, the grinding block and the sliding plate are slidably connected to the inner surface of the sliding block, the lower end of the first sliding rod is fixedly connected to the upper surface of the grinding block, the upper end of the first sliding rod is slidably connected to the inner surface of the sliding plate, the first spring is sleeved on the side surface of the first sliding rod, the upper end of the first spring is fixedly connected to the lower surface of the sliding plate, the lower end of the first spring is fixedly connected to the upper surface of the grinding block, and the lower end of the grinding block has an arc-shaped design.

[0011] Preferably, the welding device includes a bracket, an electric push rod, a welding gun, a sliding limit block, a friction roller, a fixing plate, a second spring, a second slide rod, an adjusting assembly, a scraper assembly, a polishing assembly, a third motor, and a first lead screw. The lower end of the bracket is slidably connected to the inner surface of the operating table, the electric push rod is fixedly connected to the inner surface of the bracket, the welding gun is slidably connected to the inner surface of the bracket, the rear end of the welding gun is fixedly connected to the output end of the electric push rod, the sliding limit block is slidably connected to the inner surface of the upper part of the bracket, the friction roller is rotatably connected to the inner surface of the sliding limit block, the fixing plate is fixedly connected to the side surface of the sliding limit block, and the upper end of the second slide rod is fixedly connected to the lower surface of the fixing plate. The lower end of the second slide rod is slidably connected to the inner surface of the bracket. The second spring is sleeved on the side surface of the second slide rod. The upper end of the second spring is fixedly connected to the lower surface of the fixing plate. The lower end of the second spring is fixedly connected to the upper surface of the bracket. The adjusting component is disposed on the inner surface of the sliding limit block. The scraper assembly is fixedly connected to the lower surface of the sliding limit block near the front side. The polishing assembly is movably connected to the inner surface of the sliding limit block. The upper surface of the operating table is fixedly connected to the limit block. The third motor is fixedly connected to the side surface of the limit block. The first lead screw is rotatably connected to the inner surface of the limit block. One end of the first lead screw passes through the limit block and is fixedly connected to the output end of the third motor.

[0012] Preferably, the scraper assembly includes a fixed long plate, a blade scraper, and bolts. The fixed long plate is fixedly connected to the lower surface of the sliding limit block near the front end. The blade scraper is installed on the inner side surface of the fixed long plate by bolts. The support assembly includes a support column and a rotating roller. The lower end of the support column is fixedly connected to the upper surface of the operating table, and the rotating roller is rotatably connected to the inner side surface of the support column.

[0013] Preferably, the adjusting assembly includes a limiting circular plate, a fixing threaded rod, and a nut. The limiting circular plate is slidably connected to the inner surface of the sliding limiting block. The lower end of the fixing threaded rod is fixedly connected to a protrusion on the side surface of the sliding limiting block. The upper end of the fixing threaded rod is slidably connected to the inner surface of the limiting circular plate. The nut is threadedly connected to the side surface of the fixing threaded rod and located at the upper end of the limiting circular plate.

[0014] Preferably, the polishing assembly includes a movable circular rod, a fixed circular ring, a third spring, a second motor, and a grinding wheel. The fixed circular ring is fixedly connected to the side surface of the movable circular rod, and the upper end of the movable circular rod is slidably connected to the inner surface of the limiting circular plate. The second motor is fixedly connected to the lower surface of the movable circular rod, and the grinding wheel is fixedly connected to the output end of the second motor. The third spring is sleeved on the side surface of the movable circular rod, and the lower end of the third spring is fixedly connected to the upper surface of the fixed circular ring, while the upper end of the third spring is fixedly connected to the lower surface of the limiting circular plate.

[0015] Preferably, the rotating device includes a first limiting block, a first motor, a spline, and a rotating cylinder. The first limiting block is fixedly connected to the upper surface of the operating table, the first motor is fixedly connected to the inner surface of the first limiting block, the left end of the rotating cylinder is fixedly connected to the output end of the first motor, the rotating cylinder is rotatably connected to the upper surface of the first limiting block, the spline is sleeved on the inner surface of the rotating cylinder, and the rotating cylinder has a keyway corresponding to the spline inside.

[0016] Preferably, the moving device includes a second limiting block, an upper limiting shell, a lower limiting shell, a universal joint seat, a hydraulic push rod, and a rotating limiting plate. The second limiting block is fixedly connected to the upper surface of the operating table. The hydraulic push rod is fixedly connected to the inner surface of the second limiting block. The right end of the lower limiting shell is fixedly connected to the output end of the hydraulic push rod. The right end of the upper limiting shell is provided with a third hinge. The upper limiting shell is movably connected to the upper surface of the lower limiting shell through the third hinge. The front and rear surfaces of the upper limiting shell are respectively provided with grinding devices. The grinding devices limit the movement of the upper and lower limiting shells. The rotating limiting plate is rotatably connected to the inner right surface of the lower limiting shell. The universal joint seat is fitted into the side surface of the rotating limiting plate at its middle position.

[0017] (III) Beneficial Effects

[0018] This invention provides a surface treatment apparatus for automotive powertrains. It has the following advantages:

[0019] 1. By setting up a welding device, the welding slag after welding can be cleaned and polished, and the shaft tube can be polished and formed into one piece by the polishing device, which improves work efficiency.

[0020] 2. The adjustment component is used to adjust the pressure of the third spring, which can adapt to various situations.

[0021] 3. The combination of the rotating and moving devices allows for testing after polishing, improving efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a surface treatment device for automotive powertrain proposed in this invention;

[0023] Figure 2 This is a partial first structural schematic diagram of a surface treatment device for automotive powertrain proposed in this invention;

[0024] Figure 3 This is a partial second structural schematic diagram of a surface treatment device for automotive powertrain proposed in this invention;

[0025] Figure 4 This is a schematic diagram of the polishing device structure of a surface treatment apparatus for automotive powertrain proposed in this invention;

[0026] Figure 5 This is a schematic diagram of the snap-fit ​​assembly structure of a surface treatment device for automotive powertrain proposed in this invention;

[0027] Figure 6 This is a schematic diagram of the first structure of a polishing component of a surface treatment device for automotive powertrain proposed in this invention;

[0028] Figure 7 This is a schematic diagram of the second structure of a polishing component in a surface treatment device for automotive powertrains proposed in this invention;

[0029] Figure 8 For the present invention Figure 4 Enlarged view of section A in the middle;

[0030] Figure 9 This is a schematic diagram of the support component structure of a surface treatment device for automotive powertrain proposed in this invention;

[0031] Figure 10 This is a schematic diagram of the welding device structure of a surface treatment apparatus for automotive powertrain proposed in this invention;

[0032] Figure 11 This is a schematic diagram of the adjustment component structure of a surface treatment device for automotive powertrain proposed in this invention;

[0033] Figure 12 This is a schematic diagram of the scraper assembly structure of a surface treatment device for automotive powertrain proposed in this invention;

[0034] Figure 13 This is a schematic diagram of the polishing component structure of a surface treatment device for automotive powertrain proposed in this invention;

[0035] Figure 14 This is a schematic diagram of the first structure of the rotating device of the surface treatment apparatus for automotive powertrain proposed in this invention;

[0036] Figure 15This is a schematic diagram of the second structure of the rotating device of the surface treatment apparatus for automotive powertrain proposed in this invention;

[0037] Figure 16 For the present invention Figure 15 Enlarged view of section B in the middle;

[0038] Figure 17 This is a schematic diagram of the first structure of the moving device of the surface treatment apparatus for automotive powertrain proposed in this invention;

[0039] Figure 18 This is a schematic diagram of the second structure of a moving device for a surface treatment apparatus for an automotive powertrain proposed in this invention.

[0040] The components include: 1. Operating platform; 2. Dust cover; 3. Rotating device; 301. First limit block; 302. First motor; 303. Spline; 304. Rotating cylinder; 4. Moving device; 401. Second limit block; 402. Upper limit shell; 403. Lower limit shell; 404. Universal joint seat; 405. Hydraulic push rod; 406. Rotating limit plate; 5. Welding device; 501. Bracket; 502. Electric push rod. 503. Rod; 504. Welding gun; 505. Sliding limit block; 506. Friction roller; 507. Fixing plate; 508. Second spring; 509. Second slide rod; 5001. Adjusting assembly; 50901. Limiting circular plate; 50902. Fixing threaded rod; 50903. Nut; 510. Scraper assembly; 51001. Fixing long plate; 51002. Sheet scraper; 51003. Bolt; 511. Grinding assembly; 51101, Moving rod; 51102, Fixed ring; 51103, Third spring; 51104, Second motor; 51105, Grinding wheel; 512, Third motor; 513, First lead screw; 6, Grinding device; 601, Support assembly; 60101, Support column; 60102, Rotating roller; 602, Limiting cover plate; 603, Shaft tube; 604, Buckling assembly; 60 401. Groove block; 60402. Fixing block; 60403. Actuating plate; 60404. Limiting support rod; 605. Handle; 606. Grinding assembly; 60601. Sliding block; 60602. Threaded rotating rod; 60603. First sliding rod; 60604. Sliding plate; 60605. Grinding block; 60606. First spring; 607. Second lead screw; 608. Limiting arc plate; 7. Fan. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1:

[0043] like Figure 1-18 As shown, this embodiment of the invention provides a surface treatment device for automotive powertrains, including an operating table 1. A rotating device 3 and a moving device 4 are fixedly connected to the upper surfaces of the operating table 1 near its left and right ends, respectively. A grinding device 6 is provided on the upper surface of the operating table 1 between the rotating device 3 and the moving device 4. A welding device 5 is provided on the upper surface of the operating table 1 near its rear end. A first hinge is provided at the rear end of the operating table 1. A dust cover 2 is movably connected to the rear end of the operating table 1 through the first hinge. A top block is fixedly connected to the inner upper surface of the dust cover 2. Multiple fans 7 are provided on the upper surface of the dust cover 2. Multiple air outlets are correspondingly opened on the lower surface of the dust cover 2.

[0044] The front surface of the operating table 1 is equipped with a clamping plate, and the corresponding position of the dust cover 2 is equipped with a handle. The clamping plate can lock the handle for limiting the position. The clamping plate has a certain elasticity to facilitate releasing the limiting position. A breathable dust collection bag can be installed at the air outlet at the rear of the dust cover 2 to collect grinding debris.

[0045] The grinding device 6 includes a support assembly 601, a limiting cover plate 602, a shaft tube 603, a buckle assembly 604, a handle 605, a grinding assembly 606, a second lead screw 607, and a limiting arc plate 608. The support assembly 601 is fixedly connected to the upper surface of the operating table 1. A second hinge is provided at the rear end of the support assembly 601. The limiting cover plate 602 is movably connected to the upper surface of the support assembly 601 through the second hinge. The handle 605 is fixedly connected to the front surface of the limiting cover plate 602. The buckle assembly 604 is provided on the limiting cover plate 606. At the connection between 02 and support component 601, the second lead screw 607 is rotatably connected to the inner surface of the limiting cover plate 602. The inner surface of the limiting cover plate 602 is provided with a fourth motor. One end of the second lead screw 607 is fixedly connected to the output end of the fourth motor. The grinding component 606 is threadedly connected to the side surface of the second lead screw 607. Two limiting arc plates 608 are provided and are respectively connected to the lower surface of the limiting cover plate 602 near both ends. The shaft tube 603 is installed on the inner side surface of the support component 601 through the second lead screw 607.

[0046] Two lead screws 607 are provided, which can rotate synchronously to drive the sliding block 60601 to move.

[0047] The buckle assembly 604 includes a groove block 60401, a fixing block 60402, a lever plate 60403, and a limiting support rod 60404. The groove block 60401 is fixedly connected to the front surface of the limiting cover plate 602, the fixing block 60402 is fixedly connected to the front surface of the support assembly 601, the lever plate 60403 is movably connected to the side surface of the fixing block 60402, and the limiting support rod 60404 is rotatably connected to the side surface of the lever plate 60403. The upper end of the limiting support rod 60404 is provided with a groove corresponding to the upper end of the round rod of the limiting support rod 60404.

[0048] The grinding assembly 606 includes a sliding block 60601, a threaded rotating rod 60602, a first sliding rod 60603, a sliding plate 60604, a grinding block 60605, and a first spring 60606. The sliding block 60601 is threadedly connected to the side surface of the second lead screw 607, the threaded rotating rod 60602 is threadedly connected to the inner surface of the sliding block 60601, and the grinding block 60605 and the sliding plate 60604 are slidably connected to the inner surface of the sliding block 60601. The first sliding rod 60603... The lower end of 0603 is fixedly connected to the upper surface of the grinding block 60605. The upper end of the first slide rod 60603 is slidably connected to the inner surface of the sliding plate 60604. The first spring 60606 is sleeved on the side surface of the first slide rod 60603. The upper end of the first spring 60606 is fixedly connected to the lower surface of the sliding plate 60604. The lower end of the first spring 60606 is fixedly connected to the upper surface of the grinding block 60605. The lower end of the grinding block 60605 is designed with an arc surface.

[0049] The welding device 5 includes a bracket 501, an electric push rod 502, a welding gun 503, a sliding limit block 504, a friction roller 505, a fixing plate 506, a second spring 507, a second slide rod 508, an adjusting assembly 509, a scraper assembly 510, a polishing assembly 511, a third motor 512, and a first lead screw 513. The lower end of the bracket 501 is slidably connected to the inner surface of the operating table 1. The electric push rod 502 is fixedly connected to the inner surface of the bracket 501. The welding gun 503 is slidably connected to the inner surface of the bracket 501, and the rear end of the welding gun 503 is fixedly connected to the output end of the electric push rod 502. The sliding limit block 504 is slidably connected to the inner surface of the upper part of the bracket 501. The friction roller 505 is rotatably connected to the inner surface of the sliding limit block 504. The fixing plate 506 is fixedly connected to the side surface of the sliding limit block 504. The upper part of the second slide rod 508... The first end is fixedly connected to the lower surface of the fixed plate 506, the lower end of the second slide rod 508 is slidably connected to the inner surface of the bracket 501, the second spring 507 is sleeved on the side surface of the second slide rod 508, the upper end of the second spring 507 is fixedly connected to the lower surface of the fixed plate 506, the lower end of the second spring 507 is fixedly connected to the upper surface of the bracket 501, the adjusting component 509 is set on the inner surface of the sliding limit block 504, the scraper component 510 is fixedly connected to the lower surface of the sliding limit block 504 near the front, the polishing component 511 is movably connected to the inner surface of the sliding limit block 504, the upper surface of the operating table 1 is fixedly connected to the limit block, the third motor 512 is fixedly connected to the side surface of the limit block, the first lead screw 513 is rotatably connected to the inner surface of the limit block, and one end of the first lead screw 513 passes through the limit block and is fixedly connected to the output end of the third motor 512.

[0050] The welding torch 503 is an existing gas welding equipment that uses a high-temperature flame generated by mixing oxygen and combustible gas (such as acetylene) to weld metals. It mainly relies on the reaction of oxygen and combustible gas in the welding area to generate high temperatures that melt the metal and complete the connection.

[0051] When grinding the weld, the bracket 501 can be moved by the third motor 512 to grind the area around the weld.

[0052] The scraper assembly 510 includes a fixed long plate 51001, a blade scraper 51002, and a bolt 51003. The fixed long plate 51001 is fixedly connected to the lower surface of the sliding limit block 504 near the front end. The blade scraper 51002 is installed on the inner side surface of the fixed long plate 51001 by the bolt 51003. The support assembly 601 includes a support column 60101 and a rotating roller 60102. The lower end of the support column 60101 is fixedly connected to the upper surface of the operating table 1, and the rotating roller 60102 is rotatably connected to the inner side surface of the support column 60101.

[0053] The adjusting assembly 509 includes a limiting circular plate 50901, a fixing threaded rod 50902, and a nut 50903. The limiting circular plate 50901 is slidably connected to the inner surface of the sliding limiting block 504. The lower end of the fixing threaded rod 50902 is fixedly connected to a protrusion on the side surface of the sliding limiting block 504, and the upper end of the fixing threaded rod 50902 is slidably connected to the inner surface of the limiting circular plate 50901. The nut 50903 is threadedly connected to the side surface of the fixing threaded rod 50902 and is located at the upper end of the limiting circular plate 50901.

[0054] The polishing assembly 511 includes a movable circular rod 51101, a fixed circular ring 51102, a third spring 51103, a second motor 51104, and a grinding wheel 51105. The fixed circular ring 51102 is fixedly connected to the side surface of the movable circular rod 51101. The upper end of the movable circular rod 51101 is slidably connected to the inner surface of the limiting circular plate 50901. The second motor 51104 is fixedly connected to the lower surface of the movable circular rod 51101. The grinding wheel 51105 is fixedly connected to the output end of the second motor 51104. The third spring 51103 is sleeved on the side surface of the movable circular rod 51101. The lower end of the third spring 51103 is fixedly connected to the upper surface of the fixed circular ring 51102. The upper end of the third spring 51103 is fixedly connected to the lower surface of the limiting circular plate 50901.

[0055] The rotating device 3 includes a first limiting block 301, a first motor 302, a spline 303, and a rotating cylinder 304. The first limiting block 301 is fixedly connected to the upper surface of the operating table 1. The first motor 302 is fixedly connected to the inner surface of the first limiting block 301. The left end of the rotating cylinder 304 is fixedly connected to the output end of the first motor 302. The rotating cylinder 304 is rotatably connected to the upper surface of the first limiting block 301. The spline 303 is sleeved on the inner surface of the rotating cylinder 304. The rotating cylinder 304 has a keyway inside that corresponds to the spline 303.

[0056] The moving device 4 includes a second limiting block 401, an upper limiting shell 402, a lower limiting shell 403, a universal joint seat 404, a hydraulic push rod 405, and a rotating limiting plate 406. The second limiting block 401 is fixedly connected to the upper surface of the operating table 1. The hydraulic push rod 405 is fixedly connected to the inner surface of the second limiting block 401. The right end of the lower limiting shell 403 is fixedly connected to the output end of the hydraulic push rod 405. The right end of the upper limiting shell 402 is provided with a third hinge. The upper limiting shell 402 is movably connected to the upper surface of the lower limiting shell 403 through the third hinge. The front and rear surfaces of the upper limiting shell 402 are respectively provided with a grinding device 6. The grinding device 6 limits the upper limiting shell 402 and the lower limiting shell 403. The rotating limiting plate 406 is rotatably connected to the inner right surface of the lower limiting shell 403. The middle position of the universal joint seat 404 is fitted and installed on the side surface of the rotating limiting plate 406.

[0057] Working principle: The spline 303 is placed in the rotating cylinder 304 and fitted. Then, the shaft tube 603 is placed in the support column 60101 with its lower end contacting the surface of the rotating roller 60102. Next, the limiting cover plate 602 is closed by the second hinge, and at the same time, the limiting support rod 60404 is placed in the upper groove of the groove block 60401. Then, the lever plate 60403 is pressed inward to limit the limiting cover plate 602. At this time, the arc surface of the lower end of the limiting arc plate 608 is located on the upper surface of the shaft tube 603 and limits the shaft tube 603. At this time, the limiting arc plate 608 and the shaft tube 603 are not in contact, and the shaft tube 603 can move laterally.

[0058] Next, the upper limit shell 402 is opened by the grinding device 6 and the universal joint seat 404 is placed in the lower limit shell 403. The limiting plate 406 is rotated to the middle position of the universal joint seat 404. Then the upper limit shell 402 is lowered and closed by the grinding device 6 to limit the universal joint seat 404.

[0059] Next, the hydraulic push rod 405 is activated to move the lower limit shell 403, thereby moving the welding end of the universal joint seat 404 toward the right end of the shaft tube 603. After contact, the left end of the shaft tube 603 moves to the right welding part of the spline 303. The spline 303, shaft tube 603 and universal joint seat 404 are installed together. Then, the third motor 512 is activated to move and adjust the bracket 501. At the same time, the electric push rod 502 is activated to move the welding gun 503 forward to the connection of the spline 303, shaft tube 603 and universal joint seat 404 for welding. At the same time, the first motor 302 is activated to rotate the spline 303. The spline 303, after the first welding, drives the shaft tube 603 and universal joint seat 404 to rotate, thereby completing the welding of the connection. After welding, it needs to be left to cool.

[0060] Then, rotating the threaded rod 60602 causes the grinding block 60605 to move downwards via the first slide rod 60603 and the first spring 60606, thereby pressing down on the shaft tube 603. Next, the dust cover 2 is moved downwards to cover the operating table 1, and the handle on the dust cover 2 is limited by the clamping plate at the front of the operating table 1, thus limiting the dust cover 2. At this time, the top block at the upper end of the dust cover 2 presses down on the friction roller 505, causing the sliding limit block 504 to move downwards, thus moving the blade scraper 51002 and the grinding wheel 5... After the weld seam is contacted and welded at 1105, the first motor 302 and the second motor 51104 are started to remove the weld slag and then grind it. At this time, the shaft tube 603 is in a rotating state. At the same time, the fourth motor set in the limit cover plate 602 is started to drive the second lead screw 607 to rotate and further drive the sliding block 60601 to move, thereby fixing the surface of the shaft tube 603 for grinding. During the grinding process, the fan 7 is started to blow the grinding dust through the air outlet at the rear end of the dust cover 2, and a breathable bag is installed at the air outlet to collect the dust.

[0061] Example 2:

[0062] The difference between this embodiment and embodiment one is that: after the dust cover 2 is closed and before grinding begins, the fan 7 can be turned on to blow air onto the welded area to slightly speed up the cooling process.

[0063] Example 3:

[0064] The difference between this embodiment and embodiment one is that the limit plate 50901 can be moved and compressed by turning the nut 50903 with a wrench to compress the third spring 51103, thereby giving the grinding wheel 51105 a greater tightening force. It can adapt to various situations as needed. The blade scraper 51002 can also be replaced by bolts 51003.

[0065] Example 3:

[0066] The difference between this embodiment and embodiment one is that: after grinding, the limiting cover plate 602 is opened, and then the first motor 302 is started again. The rotating cylinder 304 rotates to drive the spline 303, which in turn drives the shaft tube 603 and the universal joint seat 404 to rotate. The transmission shaft after welding and grinding is tested. The lower limiting shell 403 can be equipped with a sensor to test the vibration of the universal joint seat 404. The rotation of one end of the shaft drives the overall rotation to simulate the transmission process of a car, making the test more realistic.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for automotive powertrains, comprising an operating table (1), characterized in that: The upper surfaces of the operating table (1) near the left and right ends are fixedly connected to a rotating device (3) and a moving device (4), respectively. A grinding device (6) is provided on the upper surface of the operating table (1) between the rotating device (3) and the moving device (4). A welding device (5) is provided on the upper surface of the operating table (1) near the rear end. A first hinge is provided at the rear end of the operating table (1). A dust cover (2) is movably connected to the rear end of the operating table (1) through the first hinge. A top block is fixedly connected to the inner upper surface of the dust cover (2). Multiple fans (7) are provided on the upper surface of the dust cover (2). Multiple air outlets are correspondingly opened on the lower surface of the dust cover (2).

2. The surface treatment device for automotive powertrain according to claim 1, characterized in that: The grinding device (6) includes a support assembly (601), a limiting cover plate (602), a shaft tube (603), a buckle assembly (604), a handle (605), a grinding assembly (606), a second lead screw (607), and a limiting arc plate (608). The support assembly (601) is fixedly connected to the upper surface of the operating table (1). A second hinge is provided at the rear end of the support assembly (601). The limiting cover plate (602) is movably connected to the upper surface of the support assembly (601) through the second hinge. The handle (605) is fixedly connected to the front surface of the limiting cover plate (602). The buckle assembly (604) is provided at the limiting arc plate (608). At the connection between the limiting cover plate (602) and the support assembly (601), the second lead screw (607) is rotatably connected to the inner surface of the limiting cover plate (602). A fourth motor is provided on the inner surface of the limiting cover plate (602). One end of the second lead screw (607) is fixedly connected to the output end of the fourth motor. The grinding assembly (606) is threadedly connected to the side surface of the second lead screw (607). Two limiting arc plates (608) are provided and are respectively connected to the lower surface of the limiting cover plate (602) near both ends. The shaft tube (603) is installed on the inner side surface of the support assembly (601) through the second lead screw (607).

3. The surface treatment device for automotive powertrain according to claim 2, characterized in that: The buckle assembly (604) includes a groove block (60401), a fixing block (60402), a lever plate (60403), and a limiting rod (60404). The groove block (60401) is fixedly connected to the front surface of the limiting cover plate (602). The fixing block (60402) is fixedly connected to the front surface of the support assembly (601). The lever plate (60403) is movably connected to the side surface of the fixing block (60402). The limiting rod (60404) is rotatably connected to the side surface of the lever plate (60403). The upper end of the limiting rod (60404) is provided with a groove corresponding to the upper end of the round rod of the limiting rod (60404).

4. The surface treatment device for automotive powertrain according to claim 2, characterized in that: The grinding assembly (606) includes a sliding block (60601), a threaded rotating rod (60602), a first sliding rod (60603), a sliding plate (60604), a grinding block (60605), and a first spring (60606). The sliding block (60601) is threadedly connected to the side surface of the second lead screw (607). The threaded rotating rod (60602) is threadedly connected to the inner surface of the sliding block (60601). The grinding block (60605) and the sliding plate (60604) are slidably connected to the inner surface of the sliding block (60601). The lower end of the slide rod (60603) is fixedly connected to the upper surface of the grinding block (60605). The upper end of the first slide rod (60603) is slidably connected to the inner surface of the sliding plate (60604). The first spring (60606) is sleeved on the side surface of the first slide rod (60603). The upper end of the first spring (60606) is fixedly connected to the lower surface of the sliding plate (60604). The lower end of the first spring (60606) is fixedly connected to the upper surface of the grinding block (60605). The lower end of the grinding block (60605) is designed with an arc surface.

5. The surface treatment device for automotive powertrain according to claim 2, characterized in that: The welding device (5) includes a bracket (501), an electric push rod (502), a welding gun (503), a sliding limit block (504), a friction roller (505), a fixing plate (506), a second spring (507), a second slide rod (508), an adjustment assembly (509), a scraper assembly (510), a polishing assembly (511), a third motor (512), and a first lead screw (513). The lower end of the bracket (501) is slidably connected to the inner surface of the operating table (1). The electric push rod (502) The welding gun (503) is slidably connected to the inner surface of the bracket (501), and the rear end of the welding gun (503) is fixedly connected to the output end of the electric push rod (502). The sliding limit block (504) is slidably connected to the inner surface of the upper part of the bracket (501). The friction roller (505) is rotatably connected to the inner surface of the sliding limit block (504). The fixing plate (506) is fixedly connected to the side surface of the sliding limit block (504). The second slide rod... The upper end of the second slide rod (508) is fixedly connected to the lower surface of the fixed plate (506), the lower end of the second slide rod (508) is slidably connected to the inner surface of the bracket (501), the second spring (507) is sleeved on the side surface of the second slide rod (508), the upper end of the second spring (507) is fixedly connected to the lower surface of the fixed plate (506), the lower end of the second spring (507) is fixedly connected to the upper surface of the bracket (501), and the adjusting component (509) is set inside the sliding limit block (504). On the side surface, the scraper assembly (510) is fixedly connected to the lower surface of the sliding limit block (504) near the front side, the polishing assembly (511) is movably connected to the inner surface of the sliding limit block (504), the upper surface of the operating table (1) is fixedly connected to the limit block, the third motor (512) is fixedly connected to the side surface of the limit block, the first lead screw (513) is rotatably connected to the inner surface of the limit block, and one end of the first lead screw (513) passes through the limit block and is fixedly connected to the output end of the third motor (512).

6. The surface treatment apparatus for automotive powertrains according to claim 5, characterized in that: The scraper assembly (510) includes a fixed long plate (51001), a blade scraper (51002), and a bolt (51003). The fixed long plate (51001) is fixedly connected to the lower surface of the sliding limit block (504) near the front end. The blade scraper (51002) is installed on the inner side surface of the fixed long plate (51001) by the bolt (51003). The support assembly (601) includes a support column (60101) and a rotating roller (60102). The lower end of the support column (60101) is fixedly connected to the upper surface of the operating table (1). The rotating roller (60102) is rotatably connected to the inner side surface of the support column (60101).

7. The surface treatment apparatus for automotive powertrains according to claim 5, characterized in that: The adjusting assembly (509) includes a limiting circular plate (50901), a fixed threaded rod (50902), and a nut (50903). The limiting circular plate (50901) is slidably connected to the inner surface of the sliding limiting block (504). The lower end of the fixed threaded rod (50902) is fixedly connected to a protrusion on the side surface of the sliding limiting block (504). The upper end of the fixed threaded rod (50902) is slidably connected to the inner surface of the limiting circular plate (50901). The nut (50903) is threadedly connected to the side surface of the fixed threaded rod (50902) and located at the upper end of the limiting circular plate (50901).

8. The surface treatment apparatus for automotive powertrains according to claim 5, characterized in that: The polishing assembly (511) includes a movable circular rod (51101), a fixed circular ring (51102), a third spring (51103), a second motor (51104), and a grinding wheel (51105). The fixed circular ring (51102) is fixedly connected to the side surface of the movable circular rod (51101), and the upper end of the movable circular rod (51101) is slidably connected to the inner surface of the limiting circular plate (50901). The second motor (51104) is fixed... The grinding wheel (51105) is fixedly connected to the output end of the second motor (51104) and connected to the lower surface of the movable round rod (51101). The third spring (51103) is sleeved on the side surface of the movable round rod (51101). The lower end of the third spring (51103) is fixedly connected to the upper surface of the fixed ring (51102), and the upper end of the third spring (51103) is fixedly connected to the lower surface of the limiting round plate (50901).

9. The surface treatment device for automotive powertrain according to claim 1, characterized in that: The rotating device (3) includes a first limiting block (301), a first motor (302), a spline (303), and a rotating cylinder (304). The first limiting block (301) is fixedly connected to the upper surface of the operating table (1). The first motor (302) is fixedly connected to the inner surface of the first limiting block (301). The left end of the rotating cylinder (304) is fixedly connected to the output end of the first motor (302). The rotating cylinder (304) is rotatably connected to the upper surface of the first limiting block (301). The spline (303) is sleeved on the inner surface of the rotating cylinder (304). The rotating cylinder (304) has a keyway inside that corresponds to the spline (303).

10. The surface treatment apparatus for automotive powertrains according to claim 1, characterized in that: The moving device (4) includes a second limiting block (401), an upper limiting shell (402), a lower limiting shell (403), a universal joint seat (404), a hydraulic push rod (405), and a rotating limiting plate (406). The second limiting block (401) is fixedly connected to the upper surface of the operating table (1). The hydraulic push rod (405) is fixedly connected to the inner surface of the second limiting block (401). The right end of the lower limiting shell (403) is fixedly connected to the output end of the hydraulic push rod (405). The right end of the upper limiting shell (402) is fixedly connected to the output end of the hydraulic push rod (405). The upper limit shell (402) is movably connected to the upper surface of the lower limit shell (403) via the third hinge. The front and rear surfaces of the upper limit shell (402) are respectively provided with a grinding device (6). The grinding device (6) limits the upper limit shell (402) and the lower limit shell (403). The rotating limiting plate (406) is rotatably connected to the inner right side surface of the lower limit shell (403). The universal joint seat (404) is fitted into the side surface of the rotating limiting plate (406) at the middle position.

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