A disassembly and assembly machine for integral bearing housings of train wheelsets

Abstract

This invention discloses a disassembly and assembly machine for the integral bearing housing of train wheelsets, comprising a base, two frames fixedly mounted on one side of the top of the base, each frame having a bearing pressing mechanism inside, and two bearing unloading mechanisms fixedly mounted on the other side of the top of the base. A center positioning mechanism is provided at the top of the wheelset positioning mechanism. This invention utilizes the bearing unloading mechanism on the base, the wheelset positioning mechanism within a T-slot in the base, and the bearing pressing mechanism installed within the frames. After the wheelset is placed behind the wheelset positioning mechanism, personnel can transport it as needed, facilitating the unloading and assembly of the wheelset bearings. The wheelset positioning mechanism has a center positioning mechanism that, after lifting and lowering the wheelset using the wheelset positioning mechanism, can lock the wheelset through the center positioning mechanism to prevent wheel movement and avoid affecting the unloading or assembly of the wheelset bearings. This facilitates operation and processing or maintenance of the wheelset.

Description

Technical Field

[0001] This invention relates to the field of train vehicle technology, and in particular to a train vehicle wheelset integral bearing box bearing disassembly and assembly machine. Background Technology

[0002] The bogie is one of the most critical components of a rail vehicle, serving as its running gear and determining the vehicle's stability and passenger comfort. During the processing or maintenance of rail vehicles, it is typically necessary to disassemble or reassemble the bogie wheel pair bearings.

[0003] In response to this, Chinese Patent Publication No. CN110216449A proposes an integrated automatic bearing unloading machine for rail vehicles. A frame is mounted in the middle of the base, and a wheelset lifting and positioning device is installed below the frame. A dialing mechanism is located on the outer side of the guide rail on the frame, and a center height measuring device is located on the outer side of the dialing mechanism. The bearing storage slot is located on one side of the bearing unloading device. This invention has a reasonable structure, is safe and stable, has a high degree of automation, and high unloading efficiency, meeting the unloading requirements of various wheelset bearings. However, the aforementioned patent still has some problems:

[0004] (1) The above patent does not have an assembly function. It can only remove the wheelset bearings. However, during wheelset processing or maintenance, not only must the bearings be removed, but the wheelset bearings must also be assembled. The lack of an assembly function makes wheelset processing inconvenient for personnel.

[0005] (2) The above patent does not have a wheelset positioning mechanism and a center positioning mechanism, and cannot limit the lifting and lowering of the wheelset, which makes it easy for the wheelset bearings to move during disassembly or assembly.

[0006] (3) The above patent does not have a dial mechanism. After the wheelset is lifted, disassembled or assembled, it is impossible to turn the wheelset, which makes it inconvenient to move the wheelset out.

[0007] Therefore, we propose a disassembly and assembly machine for the integral bearing housing of train wheelsets to solve the problems mentioned above. Summary of the Invention

[0008] The purpose of this invention is to provide a disassembly and assembly machine for the integral bearing housing of train wheelsets, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a disassembly and assembly machine for a train vehicle wheelset integral bearing housing, comprising a base, two frames fixedly mounted on one side of the top of the base, each frame having a bearing pressing mechanism inside, two bearing unloading mechanisms fixedly mounted on the other side of the top of the base, and a T-slot opened in the middle of the top of the base, a wheelset positioning mechanism fixedly mounted at the bottom end of the inner wall of the T-slot, a center positioning mechanism mounted at the top of the wheelset positioning mechanism, and wheel mechanisms mounted on both sides of the inner wall of the wheelset positioning mechanism;

[0010] The bearing pressing mechanism includes a pressing table, a pressing sleeve fixedly provided at the top of the pressing table, a first pressing hydraulic cylinder installed on one side of the inner wall of the pressing sleeve, a frame fixedly provided at the output end of the first pressing hydraulic cylinder, the top and bottom of one end of the frame fixedly connected to the top and bottom of one end of the drive plate respectively, a pressing plate fixedly provided on the side of the other side of the drive plate, a fixing plate fixedly provided in the middle of the inner wall of the pressing sleeve, a second pressing hydraulic cylinder installed at one end of the fixing plate, and a ejector pin fixedly provided at the output end of the second pressing hydraulic cylinder.

[0011] The wheelset positioning mechanism includes two electric slide rails, each with a connecting column fixedly mounted at one end. The top ends of the two connecting columns are fixedly connected to the middle of the bottom end of the movable plate. Lifting machines are installed on both sides of the top end of the movable plate. The input ends of the two lifting machines are fixedly connected to the two output ends of the reducer via a transmission shaft. The input end of the reducer is fixedly connected to the output end of the drive motor. A lifting seat is installed at the top of each lifting machine. Movable columns are inserted into multiple movable holes on one side of each lifting seat. One end of each movable column is fixedly connected to the surface of one side of the V-shaped wheelset positioning seat.

[0012] The central positioning mechanism includes a fixed frame, a fixed platform fixedly mounted on the top of the fixed frame, electric hydraulic cylinders mounted on both sides of the fixed platform, movable grooves opened on both sides of the top of the fixed platform, a sliding inclined block slidably connected to one side of the inner wall of each movable groove, and a force-bearing inclined rod slidably connected to the other side of the inner wall of each movable groove, the output end of each electric hydraulic cylinder being fixedly connected to one end of the corresponding sliding inclined block, a movable seat being fixedly mounted on one end of each force-bearing inclined rod, multiple pins being fixedly mounted on one end of each movable seat, and multiple pin holes corresponding to the pins being opened on the other side of each lifting seat.

[0013] Preferably, a crossbeam is installed between the two frames, and multiple support columns are fixedly provided on both sides of the inner wall of the T-slot. The top ends of the multiple support columns located on the same side are fixedly connected to the bottom end of the corresponding support plate, and a track is fixedly provided on the top end of each support plate.

[0014] Preferably, each of the press-fit sleeves is fixedly provided with two connecting ears on one side, and the first guide holes opened on one side of the two connecting ears are inserted and connected to one side of the outer wall of the guide rod. The other side of the outer wall of the guide rod is inserted and connected to the second guide hole opened on the other end of the drive disk, and one end of the guide rod is threadedly connected with a limit nut.

[0015] Preferably, the dial mechanism includes a support block, one end of each support block is fixedly connected to one end of the corresponding lifting seat on the other side, and the top end of the support block is hinged to an electric telescopic rod via a connecting hinge, and the output end of the electric telescopic rod is hinged to a lever via a connecting hinge.

[0016] Preferably, a rotating shaft is fixedly provided on one side of the lever, and one end of the rotating shaft is rotatably connected to the surface of the other side of the lifting seat through a bearing.

[0017] Preferably, the bearing retraction mechanism includes a retraction platform, with linear slide rails fixedly provided on both sides of the top of the retraction platform. Two sliding seats are slidably connected to the top of each linear slide rail. The tops of the four sliding seats are respectively fixedly connected to the four corners of the bottom of the first retraction hydraulic cylinder. A moving block is fixedly provided at the output end of the first retraction hydraulic cylinder. A retraction bracket is rotatably connected to the outer wall of the moving block through a pin.

[0018] Preferably, reinforcing rods are fixedly provided on both sides of the outer wall of the unloading bracket, and a second unloading hydraulic cylinder is hinged to the top of the movable block through a connecting hinge. The output end of the second unloading hydraulic cylinder is hinged to one side of one of the reinforcing rods through a movable hinge. An unloading sleeve is fixedly provided on one side of the inner wall of the unloading bracket, and a top column is fixedly provided at one end of the first unloading hydraulic cylinder.

[0019] Preferably, a control box is fixedly installed on one side of the base. Two first press-fit hydraulic cylinder switches and two second press-fit hydraulic cylinder switches are fixedly installed inside the control box. The two first press-fit hydraulic cylinders and the two second press-fit hydraulic cylinders are electrically connected to an external power supply through the two first press-fit hydraulic cylinder switches and the two second press-fit hydraulic cylinder switches, respectively. The control box also contains two first unloading hydraulic cylinder switches and two second unloading hydraulic cylinder switches, which are also electrically connected to an external power supply through the two first unloading hydraulic cylinder switches and the two second unloading hydraulic cylinder switches, respectively. Furthermore, the control box contains an electric slide rail switch, a drive motor switch, two electric hydraulic cylinder switches, and an electric telescopic rod switch. The two electric slide rails, the drive motor, the two electric hydraulic cylinders, and the two electric telescopic rods are all electrically connected to an external power supply through the electric slide rail switch, the drive motor switch, the two electric hydraulic cylinder switches, and the electric telescopic rod switch, respectively.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) The base is equipped with a bearing removal mechanism, the T-slot of the base is equipped with a wheelset positioning mechanism, and the frame is equipped with a bearing pressing mechanism. The wheelset is placed behind the wheelset positioning mechanism and personnel can transport it according to their needs, which facilitates the removal and assembly of the wheelset bearing. The first pressing hydraulic cylinder in the pressing sleeve of the bearing pressing mechanism is connected to the drive plate connected to the pressing plate through the frame frame, and the second pressing hydraulic cylinder is connected to the ejector pin, which facilitates the assembly of the wheelset bearing.

[0022] (2) The wheelset positioning mechanism is equipped with a central positioning mechanism. After the wheelset is raised and lowered by the wheelset positioning mechanism, the wheelset can be locked by the central positioning mechanism to prevent the wheelset from moving and to prevent it from affecting the wheelset bearing during disassembly or assembly. This facilitates the operation of personnel and the processing or maintenance of the wheelset.

[0023] (3) The electric telescopic rod is hinged to the lever through the support block in the lever mechanism. The lever is connected to the rotating shaft, which can be used to remove or assemble the wheelset bearing or to remove the wheelset from the wheelset positioning mechanism, making it convenient to move the wheelset and easy for personnel to use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the connection structure between the base and the frame of the present invention;

[0026] Figure 3 This is a schematic diagram of the connection structure of the wheelset positioning mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the bearing press-fitting mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the press-fit sleeve of the present invention;

[0029] Figure 6 This is a schematic diagram of the bearing retraction mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the connection structure between the wheelset positioning mechanism and the central positioning mechanism of the present invention;

[0031] Figure 8 This is a schematic diagram of the connection structure between the wheelset positioning mechanism and the derailleur mechanism of the present invention;

[0032] Figure 9 This is a schematic diagram of the central positioning mechanism of the present invention;

[0033] Figure 10 This is a schematic diagram of the dial mechanism of the present invention.

[0034] In the diagram: 1. Base; 2. Frame; 3. Crossbeam; 4. Bearing press-fitting mechanism; 401. Press-fitting table; 402. Press-fitting sleeve; 403. Drive plate; 404. Press-fitting plate; 405. Ejector pin; 406. Connecting ear; 407. Guide rod; 408. First press-fitting hydraulic cylinder; 409. Frame; 410. Fixing plate; 411. Second press-fitting hydraulic cylinder; 5. Bearing unloading mechanism; 501. Unloading table; 502. Linear slide rail; 503. First unloading hydraulic cylinder; 504. Moving block; 505. Unloading bracket; 506. Unloading sleeve; 507. Top column; 508. Reinforcing rod; 509. Second unloading hydraulic cylinder; 6. T-type 7. Slot; 701. Wheelset positioning mechanism; 702. Electric slide rail; 703. Connecting column; 704. Movable plate; 705. Lifting machine; 706. Reducer; 707. Drive motor; 708. Lifting seat; 709. V-shaped wheelset positioning seat; 801. Movable column; 800. Center positioning mechanism; 801. Fixed frame; 802. Fixed platform; 803. Sliding inclined block; 804. Electric hydraulic cylinder; 805. Force-bearing inclined bar; 806. Moving seat; 807. Pin shaft; 9. Dial wheel mechanism; 901. Support block; 902. Electric telescopic rod; 903. Dial lever; 904. Rotating shaft; 10. Support column; 11. Support plate; 12. Track. Detailed Implementation

[0035] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-10 This invention provides a technical solution: a disassembly and assembly machine for a train vehicle wheelset integral bearing housing, comprising a base 1, two frames 2 fixedly mounted on one side of the top of the base 1, each frame 2 having a bearing pressing mechanism 4 inside, two bearing unloading mechanisms 5 fixedly mounted on the other side of the top of the base 1, a T-slot 6 opened in the middle of the top of the base 1, a wheelset positioning mechanism 7 fixedly mounted at the bottom of the inner wall of the T-slot 6, a center positioning mechanism 8 mounted at the top of the wheelset positioning mechanism 7, and wheel-shifting mechanisms 9 mounted on both sides of the inner wall of the wheelset positioning mechanism 7, a crossbeam 3 installed between the two frames 2, multiple support columns 10 fixedly mounted on both sides of the inner wall of the T-slot 6, the tops of the multiple support columns 10 located on the same side being fixedly connected to the bottom of the corresponding support plate 11, and a track 12 fixedly mounted at the top of each support plate 11;

[0037] The bearing pressing mechanism 4 includes a pressing table 401, a pressing sleeve 402 fixedly mounted on the top of the pressing table 401, a first pressing hydraulic cylinder 408 mounted on one side of the inner wall of the pressing sleeve 402, a frame 409 fixedly mounted on the output end of the first pressing hydraulic cylinder 408, the top and bottom of one end of the frame 409 being fixedly connected to the top and bottom of one end of the drive disc 403 respectively, a pressing disc 404 fixedly mounted on the side of the other side of the drive disc 403, and a fixed bearing mounting plate 404 fixedly mounted in the middle of the inner wall of the pressing sleeve 402. Plate 410, a second press-fit hydraulic cylinder 411 is installed at one end of the plate 410, and a pin 405 is fixedly provided at the output end of the second press-fit hydraulic cylinder 411. Two connecting ears 406 are fixedly provided on one side of each press-fit sleeve 402. The first guide hole opened on one side of the two connecting ears 406 is inserted and connected to one side of the outer wall of the guide rod 407. The other side of the outer wall of the guide rod 407 is inserted and connected to the second guide hole opened at the other end of the drive disc 403. A limit nut is threadedly connected to one end of the guide rod 407.

[0038] The wheelset positioning mechanism 7 includes two electric slide rails 701. Each electric slide rail 701 has a connecting column 702 fixedly installed at one end. The top ends of the two connecting columns 702 are fixedly connected to the middle of the bottom end of the movable plate 703. Lifting machines 704 are installed on both sides of the top end of the movable plate 703. The input ends of the two lifting machines 704 are fixedly connected to the two output ends of the reducer 705 respectively through the transmission shaft. The input end of the reducer 705 is fixedly connected to the output end of the drive motor 706. Each lifting machine 704 has a lifting seat 707 installed at the top end. Multiple movable holes on one side of each lifting seat 707 are filled with movable columns 709. One end of each movable column 709 is fixedly connected to the surface of one side of the V-shaped wheelset positioning seat 708.

[0039] The central positioning mechanism 8 includes a fixed frame 801, a fixed platform 802 fixedly mounted on the top of the fixed frame 801, electric hydraulic cylinders 804 mounted on both sides of the fixed platform 802, movable slots opened on both sides of the top of the fixed platform 802, a sliding inclined block 803 slidably connected to one side of the inner wall of each movable slot, and a force-bearing inclined rod 805 slidably connected to the other side of the inner wall of each movable slot, the output end of each electric hydraulic cylinder 804 is fixedly connected to one end of the corresponding sliding inclined block 803, a movable seat 806 is fixedly mounted on one end of each force-bearing inclined rod 805, a plurality of pins 807 are fixedly mounted on one end of each movable seat 806, and a plurality of pin holes corresponding to the pins 807 are opened on the other side of each lifting seat 707.

[0040] The dial mechanism 9 includes a support block 901. One end of each support block 901 is fixedly connected to one end of the corresponding lifting seat 707 on the other side. The top of the support block 901 is hinged to an electric telescopic rod 902 via a connecting hinge. The output end of the electric telescopic rod 902 is hinged to a lever 903 via a connecting hinge. A rotating shaft 904 is fixedly provided on one side of the lever 903. One end of the rotating shaft 904 is rotatably connected to the surface of the other side of the lifting seat 707 via a bearing.

[0041] The bearing retraction mechanism 5 includes a retraction platform 501. Linear slide rails 502 are fixedly provided on both sides of the top of the retraction platform 501. Two sliding seats are slidably connected to the top of each linear slide rail 502. The tops of the four sliding seats are fixedly connected to the four corners of the bottom of the first retraction hydraulic cylinder 503. A moving block 504 is fixedly provided at the output end of the first retraction hydraulic cylinder 503. A retraction bracket 505 is rotatably connected to the outer wall of the moving block 504 through a pin. Reinforcing rods 508 are fixedly provided on both sides of the outer wall of the retraction bracket 505. A second retraction hydraulic cylinder 509 is hinged to the top of the moving block 504 through a connecting hinge. The output end of the second retraction hydraulic cylinder 509 is hinged to one side of one of the reinforcing rods 508 through a movable hinge. A retraction sleeve 506 is fixedly provided on one side of the inner wall of the retraction bracket 505. A top column 507 is fixedly provided at one end of the first retraction hydraulic cylinder 503.

[0042] A control box is fixedly installed on one side of the base 1. Two first press-fit hydraulic cylinder switches and two second press-fit hydraulic cylinder switches are fixedly installed in the control box. The two first press-fit hydraulic cylinders 408 and the two second press-fit hydraulic cylinders 411 are electrically connected to an external power supply through the two first press-fit hydraulic cylinder switches and the two second press-fit hydraulic cylinder switches, respectively. Two first unloading hydraulic cylinder switches and two second unloading hydraulic cylinder switches are fixedly installed in the control box. Two first unloading hydraulic cylinders 503 and two second unloading hydraulic cylinders 509 are electrically connected to an external power supply through the two first unloading hydraulic cylinder switches and the two second unloading hydraulic cylinder switches, respectively. An electric slide rail switch, a drive motor switch, two electric hydraulic cylinder switches and an electric telescopic rod switch are fixedly installed in the control box. Two electric slide rails 701, a drive motor 706, two electric hydraulic cylinders 804 and two electric telescopic rods 902 are electrically connected to an external power supply through the electric slide rail switch, the drive motor switch, the two electric hydraulic cylinder switches and the electric telescopic rod switch, respectively.

[0043] The working principle of this embodiment is as follows: When using this device, the hub of the wheelset can move along the track 12 connected to the support plate 11. When the wheelset moves to the wheelset positioning mechanism 7, the drive motor 706 drives two lifters 704 through the reducer 705 to lift the lifting seat 707, thereby allowing the V-shaped wheelset positioning seat 708 connected to the lifting seat 707 to support and limit the hub of the wheelset. The connecting column 702 connected to the electric slide rail 701 is connected to the movable plate 703. The electric slide rail 701 can enable the wheelset positioning mechanism 7 to drive the wheelset to move in the T-shaped groove 6 opened in the base 1, thereby facilitating the movement of the wheelset to the wheelset bearing removal or assembly area.

[0044] At this time, the personnel can lock the wheel sets through the central positioning mechanism 8. The electric hydraulic cylinder 804 on the fixed platform 802 can drive the sliding block 803 respectively. The movement of the sliding block 803 acts on the force-bearing rod 805, which in turn moves the force-bearing rod 805. The force-bearing rod 805 drives the moving seat 806 and its pin 807. The pin 807 passes through the pin hole opened in the lifting seat 707 and acts on the V-shaped wheel set positioning seat 708, which can lock the wheel set.

[0045] During wheelset bearing assembly, the bearing passes through the ejector pin 405 and is placed on the pressing plate 404. The second pressing hydraulic cylinder 411 in the bearing pressing mechanism 4 drives the ejector pin 405 to press against the wheelset shaft end. Then, the first pressing hydraulic cylinder 408 acts on the drive plate 403 through the frame 409. The drive plate 403 acts on the pressing plate 404, and the pressing plate 404 can then assemble the bearing with the wheelset.

[0046] When the wheelset bearing is removed, the top column 507 connected to the first removal hydraulic cylinder 503 in the bearing removal mechanism 5 abuts against the wheelset axle end. The second removal hydraulic cylinder 509 on the moving block 504 drives the removal bracket 505 through the reinforcing rod 508, which can make the removal bracket 505 rotate, so that the removal sleeve 506 can be put on the bearing. Then the first removal hydraulic cylinder 503 works, which can drive the removal bracket 505 through the moving block 504, thereby removing the bearing.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A train vehicle wheel set integral bearing box bearing disassembly and assembly machine, comprising a base (1), one side of the top end of the base (1) is fixedly provided with two racks (2), the inside of each of the racks (2) is provided with a bearing press-fitting mechanism (4), the other side of the top end of the base (1) is fixedly provided with two bearing dismounting mechanisms (5), and the middle of the top end of the base (1) is provided with a T-shaped groove (6), the bottom end of the inner wall of the T-shaped groove (6) is fixedly provided with a wheel set positioning mechanism (7), the top end of the wheel set positioning mechanism (7) is provided with a center positioning mechanism (8), and both sides of the inner wall of the wheel set positioning mechanism (7) are provided with a wheel positioning mechanism (9), characterized in that: the bearing press-fitting mechanism (4) comprises a press-fitting table (401), the top end of the press-fitting table (401) is fixedly provided with a press-fitting sleeve (402), one side of the inner wall of the press-fitting sleeve (402) is mounted with a first press-fitting hydraulic cylinder (408), the output end of the first press-fitting hydraulic cylinder (408) is fixedly provided with a frame-shaped frame (409), one end of the frame-shaped frame (409) is fixedly connected with the top end and the bottom end of one end of a driving disc (403), the side of the other side of the driving disc (403) is fixedly provided with a press-fitting disc (404), the middle of the inner wall of the press-fitting sleeve (402) is fixedly provided with a fixed plate (410), one end of the fixed plate (410) is mounted with a second press-fitting hydraulic cylinder (411), and the output end of the second press-fitting hydraulic cylinder (411) is fixedly provided with a thimble (405); the wheel set positioning mechanism (7) comprises two electric sliding rails (701), one end of each of the electric sliding rails (701) is fixedly provided with a connecting column (702), the top ends of the two connecting columns (702) are fixedly connected with the middle of the bottom end of a movable plate (703), the top end of the movable plate (703) is mounted with a lift (704) on both sides, the input ends of the two lifts (704) are fixedly connected with the two output ends of a speed reducer (705) through a transmission shaft, the input end of the speed reducer (705) is fixedly connected with the output end of a driving motor (706), the top end of each of the lifts (704) is mounted with a lifting seat (707), a plurality of movable holes formed in one side of each of the lifting seats (707) are inserted with movable columns (709), and one end of each of the movable columns (709) is fixedly connected with the surface of one side of a V-shaped wheel set positioning seat (708). The center positioning mechanism (8) comprises a fixed frame (801), the top of the fixed frame (801) is fixedly provided with a fixed table (802), both sides of the fixed table (802) are provided with electric hydraulic cylinders (804), both sides of the top of the fixed table (802) are provided with movable grooves, one side of the inner wall of each movable groove is slidably connected with a sliding inclined block (803), and the other side of the inner wall of each movable groove is slidably connected with a stress inclined rod (805), one end of each electric hydraulic cylinder (804) is fixedly connected with a corresponding sliding inclined block (803), one end of each stress inclined rod (805) is fixedly provided with a moving seat (806), one end of each moving seat (806) is fixedly provided with a plurality of pin shafts (807), and the other side of each lifting seat (707) is provided with a plurality of pin holes corresponding to the pin shafts (807).

2. The train wheel set bearing disassembly and assembly machine according to claim 1, characterized in that: A cross beam (3) is installed between the two racks (2), a plurality of support columns (10) are fixedly arranged on both sides of the inner wall of the T-shaped groove (6), the top of each support column (10) on the same side is fixedly connected with the bottom of a corresponding support plate (11), and the top of each support plate (11) is fixedly provided with a rail (12).

3. The train wheel set bearing disassembly and assembly machine according to claim 1, characterized in that: One side of each pressing sleeve (402) is fixedly provided with two connecting ears (406), the first guide holes formed in one side of the two connecting ears (406) are in threaded connection with one side of the outer wall of a guide rod (407), the second guide hole formed in the other end of the guide rod (407) is in threaded connection with the other end of a driving disc (403), and one end of the guide rod (407) is in threaded connection with a limiting nut.

4. The train wheel set bearing disassembly and assembly machine of claim 1, wherein: The dial mechanism (9) comprises a support block (901), one end of each support block (901) is fixedly connected with one end of a corresponding lifting seat (707), the top of the support block (901) is hingedly connected with an electric telescopic rod (902) through a connecting hinge, and the output end of the electric telescopic rod (902) is hingedly connected with a dial rod (903) through a connecting hinge.

5. The train wheel set bearing disassembly and assembly machine of claim 4, wherein: One side of the dial rod (903) is fixedly provided with a rotating shaft (904), and one end of the rotating shaft (904) is rotatably connected with the surface of the other side of the lifting seat (707) through a bearing.

6. The train wheel set bearing disassembly and assembly machine of claim 4, wherein: The bearing dismounting mechanism (5) comprises a dismounting table (501), the top of the dismounting table (501) is fixedly provided with linear sliding rails (502) on both sides, the top of each linear sliding rail (502) is slidably connected with two sliding seats, the top of each of the four sliding seats is fixedly connected with four corner edges of the bottom of a first dismounting hydraulic cylinder (503), the output end of the first dismounting hydraulic cylinder (503) is fixedly provided with a moving block (504), and the outer wall of the moving block (504) is rotatably connected with a dismounting support (505) through a pin shaft.

7. The train wheel set bearing disassembly and assembly machine of claim 6, wherein: The outer wall of the dismounting support (505) is fixed with reinforcing rods (508) on both sides, the top end of the moving block (504) is hinged with a second dismounting hydraulic cylinder (509) through a connecting hinge, the output end of the second dismounting hydraulic cylinder (509) is hinged with one side of one of the reinforcing rods (508) through a movable hinge, and the inner wall of the dismounting support (505) is fixed with a dismounting sleeve (506) on one side.

8. The train wheel set bearing disassembly and assembly machine of claim 7, wherein: The control box is fixed on one side of the base (1), two first pressing hydraulic cylinder switches and two second pressing hydraulic cylinder switches are fixed in the control box, two first pressing hydraulic cylinders (408) and two second pressing hydraulic cylinders (411) are respectively connected with an external power source through the two first pressing hydraulic cylinder switches and the two second pressing hydraulic cylinder switches, two first dismounting hydraulic cylinder switches and two second dismounting hydraulic cylinder switches are fixed in the control box, two first dismounting hydraulic cylinders (503) and two second dismounting hydraulic cylinders (509) are respectively connected with an external power source through the two first dismounting hydraulic cylinder switches and the two second dismounting hydraulic cylinder switches, an electric sliding rail switch, a driving motor switch, two electric hydraulic cylinder switches and an electric telescopic rod switch are fixed in the control box, and two electric sliding rails (701), a driving motor (706), two electric hydraulic cylinders (804) and two electric telescopic rods (902) are respectively connected with an external power source through the electric sliding rail switch, the driving motor switch, the two electric hydraulic cylinder switches and the electric telescopic rod switch.

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