CN116197638A - Rear axle bearing press-fitting device - Google Patents

Abstract

The invention relates to the technical field of bearing press-fitting devices, in particular to a rear axle bearing press-fitting device which comprises a main body, wherein a press-fitting mechanism is arranged at the top end of the main body, a centering mechanism is arranged in the main body, the bottom end of the centering mechanism is connected with a driving mechanism, a synchronous mechanism is connected between the press-fitting mechanism and the driving mechanism, the press-fitting mechanism drives the centering mechanism through the synchronous mechanism, and a limiting mechanism is connected to the synchronous mechanism; the driving mechanism can drive the centering mechanisms to synchronously operate, so that the centering mechanisms synchronously and interactively correct the positions of the axial leads of the bearing seat, the force applied to each part is pressed uniformly, and the assembled quality is better; the hydraulic cylinder can synchronously drive the plurality of centering mechanisms to run during pressing through the arrangement of the synchronizing mechanism, and the hydraulic cylinder synchronously follows retraction during resetting, so that the synchronism is greatly improved; whether the centering mechanism is started or not is conveniently switched according to needs through the setting of the limiting mechanism, so that the device can conveniently press irregularly-shaped workpieces, and the use flexibility and the universality of the device are improved.

Description

A rear axle bearing press-fitting device

technical field

The invention relates to the technical field of bearing pressing devices, in particular to a rear axle bearing pressing device.

Background technique

In the conventional technology of rear axle bearings of automobiles, vertical punching is usually used. The bearing is placed above the bearing seat, and the pressing tooling for compensation is placed above the bearing. Two groups of bearing seats are located on the same axis. Two groups of bearing seats However, when adjusting the press-fitting tooling and the bearing seat, manual adjustments are required to align the axis line of the bearing seat with the axis line of the hydraulic rod, so that the force applied by the hydraulic rod to press the bearing seat is uniform and avoid tilting. Misalignment improves the quality of the rear axle after the bearing is installed. Multiple adjustments and trial installations waste a lot of time and greatly reduce work efficiency. Moreover, it is difficult to manually move the workpiece back and forth to press the adjustment accuracy, and it takes a long time to accumulate experience. Need to propose a kind of rear axle bearing press-fitting device badly.

Contents of the invention

Aiming at the problems in the prior art, the invention provides a rear axle bearing pressing device.

The technical solution adopted by the present invention to solve the technical problem is: a rear axle bearing press-fitting device, including a main body, a press-fitting mechanism is provided at the top of the main body, a centering mechanism is provided inside the main body, and the alignment The bottom end of the centering mechanism is connected with a driving mechanism, and a synchronization mechanism is connected between the press-fitting mechanism and the driving mechanism, and the pressing-fitting mechanism drives the centering mechanism through the synchronization mechanism, and a limit mechanism is connected to the synchronization mechanism.

Specifically, the press-fit mechanism includes a mounting plate, a rectangular mounting plate is fixedly connected to the top of the main body, a column is respectively provided on both sides of the mounting plate, and the bottom end of the column is welded on the main body , a guide rail steel bar is fixedly connected between the tops of the two columns, the cross section of the column is in the shape of a letter, a mounting plate is installed between the two columns, and a mounting plate is installed between the mounting plate and the guide rail steel bar There is a hydraulic cylinder, a pressing plate is connected to the piston rod of the hydraulic cylinder, and a remote controller is magnetically attracted to the column.

Specifically, the centering mechanism includes movable slots, and a plurality of movable slots are opened on the placement plate, and the plurality of movable slots are radially distributed around the center of the placement plate. A pair-shaped track groove, a connecting shaft is slidably connected in the track groove, and a centering slider is rotatably connected between a plurality of the connecting shafts, the top of the centering slider is semicircular, and the centering slider One side of the slider is provided with a driving rod, and a plurality of first connecting rods are slidably connected to the driving rod, and one end of the first connecting rod is fixedly connected to the connecting shaft, and a buffer spring is wound on the first connecting rod , the buffer spring interferes between the first connecting rod and the driving rod, the centering slider slides along the track groove through the connecting shaft, and the bottom end of the driving rod extends to the inside of the main body.

Specifically, the driving mechanism includes a Miko board, and the inside of the main body is provided with a Miko board, and the cross section of the Miko board is in the shape of a rice character. The first chute is provided with two, and the first chute of the same group is vertically arranged, the inside of the first chute is slidably connected with a first slider, and the first slider is rotatably connected with a The third slider, the third slider is slidably connected to the corresponding drive rod, the second slider is rotatably connected to the second slider, the second slider is slidably connected to the drive rod, and the first slider The slots are arranged at an oblique angle.

Specifically, the drive mechanism also includes a fixed plate, and a plurality of fixed plates are arranged inside the main body, and the fixed plate is fixedly connected to the main body, and two auxiliary sliding rods are fixedly connected to the driving rod, and the auxiliary sliding rods Slide to attach the fixed plate.

Specifically, the synchronization mechanism includes a butt plate, the bottom end of the installation plate is provided with a butt plate, the butt plate is rotatably connected to the hydraulic cylinder, a swivel is rotatably connected to the butt plate, and the butt plate slides Two first sliding rods are connected, and a first spring is wound on the first sliding rod, and the first spring resists the first sliding rod, and a second connection is rotatably connected between the first sliding rod and the swivel pole.

Specifically, the synchronous mechanism also includes a telescopic shaft, the inside of the column is provided with a telescopic shaft, the top end of the telescopic shaft is slidably connected to the butt plate and the bottom end is slidably connected to the main body, and the bottom end of the telescopic shaft is connected to the rice plate. A connecting block is fixedly connected between them, the top end of the telescopic shaft is provided with a threaded groove, and the end of the first slide bar away from the second connecting rod is fixedly connected with a jagged block at the end, and the block interferes with the telescopic shaft. on axis.

Specifically, the limit mechanism includes a control wrench, one side of the swivel is fixedly connected with a control wrench, a slot is opened on the control wrench, a clamping rod is slidably connected to the docking plate, and the clamping rod The bottom end of the clamping rod is chamfered, a second spring is wound around the clamping rod, and the second spring is in contact between the clamping rod and the docking plate, and the top end of the clamping rod is rotatably connected with a wavy seesaw.

The beneficial effects of the present invention are:

(1) A rear axle bearing pressing device according to the present invention can simultaneously drive multiple centering mechanisms to run synchronously through the driving mechanism, so that multiple centering mechanisms can synchronously and interactively correct the position of the bearing seat, so that the bearing seat is automatically in the Set the center position of the plate. At this time, the axis of the bearing seat, bearing, pressing compensation tooling and hydraulic cylinder are at the same position, and the force is applied uniformly everywhere in the pressing, and the quality after assembly is better. It is used to drive the bearing seat to reach the center position. The centering slider is hidden inside the mounting plate when it is not in use, so as to avoid hindering the placement of the bearing seat, and it is extended for use during operation. The corresponding activity mode is made according to the assembly sequence, which greatly improves the user experience of the device. In addition, the buffer On the one hand, the setting of the spring provides a cushioning effect for the centering slider to clamp and adjust the bearing seat, and also plays the role of centering the bearing seats of different diameters within a certain range, which is convenient for press-fitting different types of rear axle bearings and improves the versatility of the device.

(2) A rear axle bearing pressing device according to the present invention, through the setting of the synchronous mechanism, it is convenient for the hydraulic cylinder to synchronously drive a plurality of centering mechanisms to operate during pressing, and when the hydraulic cylinder is reset, it will follow the retraction synchronously, and the synchronicity is greatly improved , there is no need to set up independent redundant power components for the driving centering mechanism, which improves the automation and integration of the equipment.

(3) A rear axle bearing press-fitting device according to the present invention, through the setting of the limit mechanism, it is convenient to switch whether to start the centering mechanism according to the needs, so that the device is convenient for pressing workpieces with irregular shapes, and the flexibility and flexibility of the device are improved. Versatility.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of the overall structure of a preferred embodiment of a rear axle bearing press-fitting device provided by the present invention;

Fig. 2 is a schematic diagram of the connection structure of the press-fitting mechanism, centering mechanism, driving mechanism and synchronizing mechanism shown in Fig. 1;

Fig. 3 is an enlarged schematic diagram of part A shown in Fig. 2;

FIG. 4 is an enlarged schematic diagram of part B shown in FIG. 2;

Fig. 5 is a schematic diagram of the connection structure of the press-fitting mechanism and the synchronizing mechanism shown in Fig. 1;

Fig. 6 is a schematic diagram of the connection structure of the press-fit mechanism, the synchronization mechanism and the limit mechanism shown in Fig. 5;

Fig. 7 is an enlarged schematic diagram of part C shown in Fig. 5;

Fig. 8 is a schematic diagram of the structure of the rice-shaped board shown in Fig. 2 .

In the figure: 1. Main body; 2. Press-fit mechanism; 21. Placement plate; 22. Upright column; 23. Guide rail steel bar; 24. Installation plate; 25. Hydraulic cylinder; 26. Pressing plate; 27. Remote control; 3. Centering mechanism; 31, centering slider; 32, connecting shaft; 33, track groove; 34, driving rod; 35, first connecting rod; 36, buffer spring; 37, movable groove; 4, driving mechanism; 41, Yonago board; 42, the first chute; 43, the first slider; 44, the second slider; 45, the third slider; 46, the fixed plate; 47, the auxiliary slider; 5, the synchronous mechanism; 51, the docking Plate; 52, telescopic shaft; 53, swivel; 54, first slide bar; 55, block; 56, first spring; 57, second connecting rod; 58, connecting block; 6, limit mechanism; 61, Control wrench; 62, draw-in slot; 63, clamp rod; 64, second spring; 65, seesaw.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Figures 1-8, a rear axle bearing press-fitting device according to the present invention includes a main body 1, a press-fitting mechanism 2 is provided on the top of the main body 1, and a centering mechanism 2 is provided inside the main body 1. Mechanism 3, the drive mechanism 4 is connected to the bottom end of the centering mechanism 3, a synchronization mechanism 5 is connected between the pressing mechanism 2 and the driving mechanism 4, and the pressing mechanism 2 drives the centering mechanism through the synchronization mechanism 5 3. The synchronization mechanism 5 is connected with a limit mechanism 6 .

Specifically, the press-fitting mechanism 2 includes a mounting plate 21, and the top end of the main body 1 is fixedly connected with a rectangular mounting plate 21, and two sides of the mounting plate 21 are respectively provided with a column 22, and the column 22 The bottom end of the main body 1 is welded on the main body 1, and a guide rail steel bar 23 is fixedly connected between the tops of the two columns 22. 24. A hydraulic cylinder 25 is installed between the mounting plate 24 and the guide rail steel bar 23, a pressing plate 26 is connected to the piston rod of the hydraulic cylinder 25, and a remote controller 27 is magnetically attracted to the column 22; At this time, first place the bearing seat on the placement plate 21, and roughly place it at the center of the plurality of movable grooves 37, place the bearing on the bearing seat, then place the tooling for compensating the distance, pass through the The remote control 27 controls the operation of the hydraulic cylinder 25. When the pressing plate 26 has not touched the tooling, the piston rod drives a plurality of the centering sliders 31 to the center of the setting plate 21 synchronously through multiple mechanisms. If the position is active, the multiple centering sliders 31 move to correct the position of the bearing seat so that it is in the center of the placement plate 21. At this time, the tooling moves accordingly, and the bearing seat, bearing, tooling and piston rod are all in the position At the same position of the axis line, the pressing plate 26 contacts the pressing bearing, exerts force on the bearing evenly, and the effect after assembly is better.

Specifically, the centering mechanism 3 includes a movable groove 37, and a plurality of movable grooves 37 are opened on the placement plate 21, and a plurality of the movable grooves 37 are radially distributed around the center of the placement plate 21, and the movable The inside of the groove 37 is provided with a track groove 33 in the shape of a check mark, and a connecting shaft 32 is slidably connected in the track groove 33, and a centering slider 31 is rotatably connected between a plurality of the connecting shafts 32. The top of the slide block 31 is semicircular, and one side of the centering slide block 31 is provided with a driving rod 34, and the driving rod 34 is slidably connected with a plurality of first connecting rods 35. One end is fixedly connected to the connecting shaft 32, the first connecting rod 35 is wound with a buffer spring 36, and the buffer spring 36 interferes between the first connecting rod 35 and the driving rod 34, and the centering slider 31 is connected by The shaft 32 slides along the track groove 33, and the bottom end of the driving rod 34 extends to the inside of the main body 1; when the centering slider 31 moves, it is driven by the driving rod 34, and the driving rod 34 The centering slider 31 is driven by the first connecting rod 35 and the buffer spring 36, so that a plurality of the centering sliders 31 are synchronously approached to the center of the placement plate 21, so that the bearing seat is in the Set the center position of the plate 21, the buffer spring 36 makes the centering slider 31 have a buffering effect when clamping the bearing seat, avoiding violent impact, and the clamping is more friendly. At the same time, the buffer spring 36 makes the centering The slider 31 also has the function of correcting the bearing seats with different diameters, without manpower adjustment and trial assembly to repeatedly adjust the position of the bearing seats, which saves manpower, makes the operation easier, improves the press-fitting efficiency, and is used to guide the movement of the centering slider 31 The track groove 33 is set in the shape of a check mark, then the reset of the centering slider 31 is hidden inside the movable groove 37, and it is only in a protruding state when clamping and centering, so then It is convenient to place the bearing seat, and it will not be blocked when it is placed, and the placement is more worry-free and labor-saving.

Specifically, the drive mechanism 4 includes a rice paddle 41, the inside of the main body 1 is provided with a rice paddle 41, the cross section of the rice paddle 41 is in the shape of a rice paddy, and there are multiple sets of first There are two chute 42 in each group of the first chute 42, and the first chute 42 of the same group is vertically arranged, and the inside of the first chute 42 is slidably connected with a first slider 43 , the first slider 43 is rotatably connected with a third slider 45, the third slider 45 is slidably connected with the corresponding drive rod 34, and the third slider 45 is rotatably connected with a second slider 44 , the second sliding block 44 is slidably connected to the driving rod 34, and the first sliding slot 42 is arranged at an oblique angle.

Specifically, the driving mechanism 4 also includes a fixing plate 46, and a plurality of fixing plates 46 are arranged inside the main body 1, and the fixing plates 46 are fixedly connected to the main body 1, and two auxiliary slides are fixedly connected to the driving rod 34. Rod 47, the auxiliary sliding rod 47 is slidably connected to the fixed plate 46; the synchronous operation of a plurality of the drive rods 34 is realized by the rice sub-board 41, and the multiple branch boards on the rice sub-board 41 are correspondingly driven. The driving rod 34, the rice sub-board 41 is provided with the first chute 42 arranged obliquely, and the first chute 42 passes through the first slider 43, the second slider 44 and the third slider 45 Drive the driving rods 34 to move along the directions of the corresponding auxiliary sliding rods 47, so that the multiple driving rods 34 are moved closer or apart synchronously, so as to achieve the purpose of driving multiple centering sliders 31 to move; When the piston rod is driven to expand and contract by the hydraulic cylinder 25, it will drive the telescopic shaft 52 to move, and the telescopic shaft 52 and the connecting block 58 will synchronously drive the rice plate 41 to move, the synchronization is greatly improved, and there is no need for a separate To drive the rice sub-board 41, redundant redundant power components are set up, which improves the automation and integrity of the equipment.

Specifically, the synchronization mechanism 5 includes a butt plate 51, the bottom end of the installation plate 24 is provided with a butt plate 51, the butt plate 51 is rotatably connected to the hydraulic cylinder 25, and a swivel is rotatably connected to the butt plate 51 53, two first sliding rods 54 are slidably connected to the docking plate 51, and a first spring 56 is wound on the first sliding rods 54, and the first spring 56 resists the first sliding rods 54, and the first sliding rods 54 A second connecting rod 57 is rotatably connected between a sliding rod 54 and the swivel ring 53 .

Specifically, the synchronizing mechanism 5 also includes a telescopic shaft 52, the interior of the column 22 is provided with a telescopic shaft 52, the top end of the telescopic shaft 52 is slidably connected to the docking plate 51 and the bottom end is slidably connected to the main body 1, and the telescopic shaft 52 is A connection block 58 is fixedly connected between the bottom end of the 52 and the rice sub-board 41, and the top end of the telescopic shaft 52 is provided with a thread groove, and the end of the first sliding rod 54 away from the second connecting rod 57 is fixedly connected with a The jagged block 55 is in contact with the telescopic shaft 52 .

Specifically, the limit mechanism 6 includes a control wrench 61, one side of the swivel 53 is fixedly connected with a control wrench 61, the control wrench 61 is provided with a card slot 62, and the docking plate 51 is slidably connected with a The clamping rod 63, the bottom end of the clamping rod 63 is chamfered, the second spring 64 is wound on the clamping rod 63, and the second spring 64 is in contact between the clamping rod 63 and the butt plate 51, the The top of the clamping rod 63 is rotatably connected with a wavy seesaw 65; when the part to be pressed by the device is irregular and the centering function is not needed, it is only necessary to manipulate the control wrench 61 to drive the swivel 53 to rotate , the swivel 53 drives the first sliding rod 54 through the second connecting rod 57, so that the clamping block 55 is no longer engaged with the telescopic shaft 52, and the hydraulic cylinder 25 is not driving the pair when it is running. The operation of the centering function facilitates the use of the device in irregular press-fitting operations and improves the versatility of the device. When the centering function needs to be reactivated, just press the seesaw 65 and use the principle of leverage to drive the clamping rod 63 labor-saving Slide up to make the bottom end of the clamping rod 63 break away from the clamping groove 62, thereby removing the limit to the control wrench 61, and the first spring 56 drives the first sliding rod 54 to reset again, so When the clamping block 55 is re-engaged with the telescopic shaft 52, the hydraulic cylinder 25 can synchronously drive the centering function when it moves, which improves the flexibility of use of the device.

When the present invention is in use, when using the device, first place the bearing seat on the placement plate 21, and roughly place it at the center of a plurality of movable grooves 37, place the bearing on the bearing seat, and then place the bearing seat for compensation distance The tooling is controlled by the remote controller 27 to control the operation of the hydraulic cylinder 25. When the pressing plate 26 is not in contact with the tooling, the piston rod drives a plurality of centering sliders 31 to move synchronously to the center of the placement plate 21 through multiple mechanisms. A centering slider 31 moves and corrects the position of the bearing seat so that it is at the center of the mounting plate 21. At this time, the tooling moves accordingly, and the bearing seat, bearing, tooling and piston rod are all at the same position on the axis line, and the pressing plate 26 contact and press the bearing, apply force to the bearing evenly, and the effect after assembly is better; when the centering slider 31 moves, it is driven by the drive rod 34, and the drive rod 34 drives the centering rod 35 through the first connecting rod 35 and the buffer spring 36. The centering slider 31 makes a plurality of centering sliders 31 close to the center of the mounting plate 21 synchronously, so that the bearing seat is at the center of the mounting plate 21, and the buffer spring 36 makes the centering slider 31 have a buffering effect when clamping the bearing seat , to avoid violent impact, and the clamping is more friendly. At the same time, the buffer spring 36 makes the centering slider 31 also have the function of correcting the bearing seats with different diameters. It is simple and improves the press-fitting efficiency. The track groove 33 used to guide the movement of the centering slider 31 is set in the shape of a check mark, and the reset of the centering slider 31 is hidden inside the movable groove 37. It is in a protruding state, so that it is convenient to place the bearing seat, and it will not be blocked when it is placed, and the placement is more worry-free and labor-saving; the synchronous operation of driving multiple drive rods 34 is realized through the Mizi board 41, and the Mizi board 41 The plurality of branch plates on the top correspond to drive the drive rod 34, and the rice sub-board 41 is provided with a first chute 42 arranged obliquely, and the first chute 42 is driven by the first slider 43, the second slider 44 and the third slider 45 The driving rods 34 move along the directions of the corresponding auxiliary sliding rods 47, so that the multiple driving rods 34 move closer or apart synchronously, so as to achieve the purpose of driving multiple centering sliders 31; when the piston rod is driven by the hydraulic cylinder 25 to stretch , drives the telescopic shaft 52 to move, and synchronously drives the rice board 41 to move through the telescopic shaft 52 and the connecting block 58, the synchronization is greatly improved, and there is no need to set up redundant redundant power components for driving the rice board 41, which improves the automation and integration of equipment ; When the parts to be suppressed by the device are irregular and there is no need to use the centering function, you only need to manipulate the control wrench 61 to drive the swivel 53 to rotate, and the swivel 53 drives the first slide bar 54 through the second connecting rod 57 to make the card If the block 55 is not engaged with the retractable shaft 52, the hydraulic cylinder 25 will not operate with the drive centering function, which facilitates the use of the device in irregular press-fitting operations and improves the versatility of the device. When the centering function needs to be reactivated, Just press the seesaw 65, use the principle of leverage to drive the lever 63 to slide upwards, so that the bottom end of the lever 63 is separated from the groove 62, thereby releasing the limit on the control wrench 61, and the first spring 56 drives the first slider 54 is reset again, and the block 55 is engaged on the telescopic shaft 52 again, and then the hydraulic cylinder 25 can synchronously drive the operation of the centering function when the hydraulic cylinder 25 is active, which improves the flexibility of use of the device.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (8)

1. A rear axle bearing press-fitting device, characterized in that it comprises a main body (1), the top of the main body (1) is provided with a press-fit mechanism (2), and the inside of the main body (1) is provided with a centering mechanism (3), the drive mechanism (4) is connected to the bottom end of the centering mechanism (3), and a synchronization mechanism (5) is connected between the press-fitting mechanism (2) and the drive mechanism (4). The press-fitting mechanism (2) drives the centering mechanism (3) through a synchronous mechanism (5), and the synchronous mechanism (5) is connected with a limit mechanism (6). 2. A rear axle bearing press-fitting device according to claim 1, characterized in that the press-fit mechanism (2) includes a mounting plate (21), and the top end of the main body (1) is fixedly connected with a Shaped setting plate (21), the two sides of described setting plate (21) are respectively provided with a column (22), and the bottom end of described column (22) is welded on the main body (1), and two described columns ( 22) A guide rail steel bar (23) is fixedly connected between the top ends, the cross-section of the upright column (22) is in the shape of a Chinese character, and a mounting plate (24) is installed between the two upright columns (22). A hydraulic cylinder (25) is installed between the plate (24) and the guide rail steel bar (23), the piston rod of the hydraulic cylinder (25) is connected with a pressing plate (26), and the column (22) is magnetically attracted remote control (27). 3. A rear axle bearing press-fitting device according to claim 2, characterized in that, the centering mechanism (3) includes a movable groove (37), and a plurality of movable grooves (37) are opened on the placement plate (21). Groove (37), a plurality of said movable grooves (37) are distributed in a radial ring around the center of the placement plate (21), and the inside of said movable groove (37) is provided with a track groove (33) in the shape of a check mark, A connecting shaft (32) is slidably connected in the track groove (33), and a centering slider (31) is rotatably connected between a plurality of the connecting shafts (32), and the top of the centering slider (31) It is semicircular, and one side of the centering slider (31) is provided with a driving rod (34), and a plurality of first connecting rods (35) are slidably connected to the driving rod (34). One end of the rod (35) is fixedly connected to the connecting shaft (32), and a buffer spring (36) is wound on the first connecting rod (35), and the buffer spring (36) is in contact with the first connecting rod (35) and Between the driving rods (34), the centering slider (31) slides along the track groove (33) through the connecting shaft (32), and the bottom end of the driving rod (34) extends to the inside of the main body (1) . 4. A kind of rear axle bearing press-fitting device according to claim 3, characterized in that, the drive mechanism (4) comprises a ricer plate (41), and the inside of the main body (1) is provided with a ricer plate (41 ), the cross-section of the Mizi board (41) is in the shape of rice, and the Mizi board (41) offers multiple sets of first chute (42), and each group of the first chute (42) is provided with Two, the first chute (42) of the same group is arranged vertically, and the inside of the first chute (42) is slidably connected with a first slider (43), and the first slider (43) ) is rotatably connected with a third slider (45), the third slider (45) is slidably connected with the corresponding drive rod (34), and the third slider (45) is rotatably connected with a second slider (44), the second sliding block (44) is slidably connected to the driving rod (34), and the first sliding slot (42) is arranged at an oblique angle. 5. A rear axle bearing press-fitting device according to claim 4, characterized in that, the driving mechanism (4) further includes a fixing plate (46), and a plurality of fixing plates are arranged inside the main body (1) (46), the fixed plate (46) is fixedly connected to the main body (1), and the drive rod (34) is fixedly connected with two auxiliary slide bars (47), and the auxiliary slide bar (47) is slidably connected to the fixed plate (46). 6. A rear axle bearing press-fitting device according to claim 4, characterized in that, the synchronizing mechanism (5) includes a butt plate (51), and the bottom end of the mounting plate (24) is provided with a butt plate (51), the butt plate (51) is rotationally connected with the hydraulic cylinder (25), the butt plate (51) is rotatably connected with a swivel (53), and the butt plate (51) is slidably connected with two The first slide bar (54), the first slide bar (54) is wound with a first spring (56), the first spring (56) resists the first slide bar (54), and the first slide bar A second connecting rod (57) is rotatably connected between (54) and the swivel (53). 7. A kind of rear axle bearing press-fitting device according to claim 6, characterized in that, the synchronous mechanism (5) also includes a telescopic shaft (52), and the interior of the column (22) is provided with a telescopic shaft ( 52), the top of the telescopic shaft (52) is slidably connected to the docking plate (51) and the bottom end is slidably connected to the main body (1), and the bottom end of the telescopic shaft (52) is fixedly connected to the rice plate (41). The connecting block (58), the top end of the telescopic shaft (52) is provided with a thread groove, and the end of the first sliding rod (54) away from the second connecting rod (57) is fixedly connected with a jagged block at the end (55), the block (55) interferes with the telescopic shaft (52). 8. A rear axle bearing pressing device according to claim 7, characterized in that the limit mechanism (6) includes a manipulation wrench (61), and one side of the swivel (53) is fixedly connected with A control wrench (61), the control wrench (61) is provided with a card slot (62), the butt plate (51) is slidably connected with a clamp rod (63), and the bottom end of the clamp rod (63) is chamfered shape, the second spring (64) is wound on the clamping rod (63), and the second spring (64) interferes between the clamping rod (63) and the butt plate (51), and the clamping rod ( The top of 63) is rotatably connected with a wavy seesaw (65).

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