Auxiliary mounting device for bearing at end part of shaft

Abstract

The shaft end bearing auxiliary installation device is suitable for installation of bearings on shafts of different models and comprises a workbench and a rack installed on the workbench, and a height adjusting assembly and a variable-diameter clamping assembly are adjacently installed on the top face of the rack. The height adjusting assembly supports the transmission assembly in the mode that the height is adjustable in the vertical direction, the transmission assembly is provided with a variable-diameter pressing head assembly, the transmission assembly can drive the variable-diameter pressing head assembly to move in the vertical direction, and the variable-diameter pressing head assembly is suitable for downward pressing of bearings of different models. The variable-diameter clamping assembly can tightly clamp shafts of different models, a bearing initially installed on the shaft is fastened and installed on the shaft through downward pressure generated by the variable-diameter pressing head assembly, and the installation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shaft end bearing installation in mechanical equipment, and in particular relates to a shaft end bearing auxiliary installation device. Background Art

[0002] Bearings are core and key components that are widely used in the field of mechanical equipment. They are of various types and structures. Compared with other components, they have higher precision requirements in actual engineering applications. The inner ring of the bearing and the journal are installed using the base hole system; the outer ring of the bearing and the bearing mounting hole are installed using the base shaft system. Both installation requirements are used to ensure that the deformation of the outer ring, inner ring, and rolling element of the bearing is within a controllable range. If the inner ring of the bearing is enlarged or the outer ring is compressed, and the rolling element is overly flattened, the design service life of the bearing will be greatly reduced, and it will fail quickly, thereby shortening the working time of the mechanical equipment and indirectly causing a large amount of economic losses.

[0003] The installation precision of bearings is relatively high. The tools used in the installation process include wrenches, hammers, screwdrivers, pliers, heaters, extractors, series installers, etc. During installation, the bearing end face must be parallel to the end face of the installation shaft and the bearing axis must be in line with the axis of the installation shaft (if the two end faces are not completely parallel during actual installation, the inner and outer rings will be scratched when the bearing is pressed in), so that the bearing can be correctly pressed into the shaft head and matched with the shaft shoulder. If a new bearing is not installed correctly for the first time, the manual operation is not standardized, and the auxiliary installation device is incompatible, it will easily cause damage to the inner and outer rings of the bearing, resulting in unqualified bearing installation. The bearing will be directly scrapped before it officially enters the service stage. When the end bearing of the shaft is pressed into the shaft head and matched with the shaft shoulder, the installation shaft must be kept vertically fixed (common installation direction) to ensure that the bearing is not damaged or scratched during installation and the bearing is fully centered.

[0004] Although the existing shaft-end bearing auxiliary installation equipment designed and developed has explored this series of problems to varying degrees, the existing problems are: when installing bearings of different sizes, a series of sets of matching pressure heads and installers are required. The installation set tools are not generally applicable to bearings of different sizes and types, and the compatibility and adaptability are poor. As a result, the number and variety of tooling during bearing installation are huge, the resource utilization rate is low, and the matching tools need to be collected repeatedly. The installation qualification rate cannot be effectively guaranteed, the installation shafts of different sizes cannot be effectively clamped and aligned, and the parallelism between the bearing end face and the installation shaft end face cannot be guaranteed during installation, resulting in bearing press-in abrasion damage and other problems. Therefore, scientific, reasonable, and standardized bearing auxiliary installation devices are an inevitable requirement for the development of the bearing installation field. Summary of the invention

[0005] In view of this, the shaft end bearing auxiliary installation device provided by the present invention can be suitable for the shaft end pressing work of bearings of different sizes and types. It has general applicability to multiple types of bearings when installing bearings and can be compatible with multiple bearings.

[0006] A shaft end bearing auxiliary installation device is suitable for the installation of bearings on shafts of different models, comprising a workbench and a frame installed on the workbench, wherein a height adjustment component and a variable diameter clamping component are adjacently installed on the top surface of the frame, wherein:

[0007] The height adjustment assembly supports the transmission assembly in a manner that the height is adjustable in the vertical direction. The transmission assembly is equipped with a variable diameter pressure head assembly, and the transmission assembly can drive the variable diameter pressure head assembly to move in the vertical direction. The variable diameter pressure head assembly is suitable for pressing down bearings of different models;

[0008] The variable diameter clamping assembly can tightly clamp shafts of different models, and the bearing initially installed on the shaft is firmly installed on the shaft by the downward pressure generated by the variable diameter pressure head assembly.

[0009] The technical beneficial effects of the present invention are:

[0010] When the mounting head is pressed, the parallelism between the end face of the bearing and the end face of the mounting shaft can be automatically adjusted. The pressing radius of the mounting head is flexibly adjustable through the guide disc, and the pressing radius size can be displayed intuitively on a scale. Driven by a motor, the mounting head can move up and down quickly, effectively improving the efficiency of pressing the bearing into the shaft end and achieving efficient assembly line operation. In addition, this technical solution is compatible with mounting shafts of different radii and lengths, and can effectively clamp, adjust and center the mounting shaft in the vertical direction. When installing the bearing, ensure that the axis of the inner and outer rings of the bearing coincides with the axis of the mounting shaft, and that the end face of the bearing is parallel to the cross section of the mounting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is an overall assembly drawing of a shaft end bearing auxiliary installation device;

[0013] Figure 2 This is an exploded view of the reducer head assembly;

[0014] Figure 3 This is an exploded view of the reducer clamping assembly;

[0015] Figure 4 It is an exploded view of the transmission assembly;

[0016] Figure 5 It is the assembly drawing connected with the rack;

[0017] Figure 6 It is a partial assembly drawing;

[0018] Figure 7 This is the assembly drawing of the reducer head assembly;

[0019] Figure 8 It is a partial assembly drawing of the reducer clamping assembly;

[0020] Fig. 9 It is the height adjustment component assembly drawing;

[0021] Fig.10 It is the parts diagram of the guide gear plate;

[0022] Fig.11 It is a side view of the transmission assembly;

[0023] Fig.12 It is a partial enlarged view of the guide boss in the transmission assembly;

[0024] Fig.13 This is the screw parts drawing;

[0025] Fig.14 It is a local exploded view, where

[0026] 1. Transmission assembly; 2. Variable diameter pressure head assembly; 3. Variable diameter clamping assembly; 4. Height adjustment assembly; 5. Rack; 6. Workbench; 11. Motor; 12. Input gear; 13. Transmission wheel; 14. Screw; 15. Screw rotating nut; 16. Dust cover; 17. First housing; 18. Guide boss; 141. Limiting groove; 142. Docking column; 143. Limiting cap; 21. Guide disc; 22. Pressure rod; 23. Guide connector; 24. Fastening nut; 25. Screw connector; 251. First mounting column; 252. Mounting boss; 231. First mounting hole; 232. Mounting table; 221. First rectangular block; 222. First connecting rod; 211. Second mounting column; 212. First arc-shaped guide hole; 31. First guide gear plate; 32. Second guide gear plate; 33. First clamping contact ;34, second clamping contact;35, first contact guide plate;36, second contact guide plate;37, support plate;38, transmission bevel gear;39, axial limiting wheel;371, support groove;372, first ring ear;311, first arc-shaped slot;312, second arc-shaped guide hole;351, first T-slot;352, first arc-shaped protrusion;331, second rectangular block;332, second connecting rod;3311, first conical portion;3312, first arc surface structure;361, second T-slot;362, second arc-shaped protrusion;341, third rectangular block;342, third connecting rod;321, third arc-shaped guide hole;381, transmission rod;382, rotating handle;383, mounting block;391, L-shaped fixing rod;41, first rod;42, second rod;43, butterfly bolt;100, tightening adjustment rod. DETAILED DESCRIPTION

[0027] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0028] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0029] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0030] like Figures 1 to 14 The shaft end bearing auxiliary installation device shown is suitable for the installation of bearings 7 on shafts 8 of different models, and includes a workbench 6 and a frame 5 installed on the workbench 6. A height adjustment component 4 and a variable diameter clamping component 3 are installed adjacent to the top surface of the frame 5, wherein:

[0031] The height adjustment component 4 supports the transmission component 1 in a manner that the height is adjustable in the vertical direction. The transmission component 1 is equipped with a variable diameter pressing head component 2, and the transmission component 1 can drive the variable diameter pressing head component 2 to move in the vertical direction. The variable diameter pressing head component 2 is suitable for pressing down the inner ring or outer ring of bearings of different models;

[0032] The reducing clamping assembly 3 can tightly clamp shafts of different models. The bearing initially installed on the shaft is firmly installed on the shaft by the downward pressure generated by the reducing pressure head assembly 2.

[0033] As a specific implementation provided in this case, the frame 5 is installed on the workbench 6 in a horizontal manner. The reducer clamping assembly 3 is concentrically matched on the frame 5 through the support plate 37, and the frame 5 is connected to the workbench 6 by bolts. Elastic washers are used on the bolts, and the elastic washers are mainly used for leveling the surface of the frame.

[0034] As a specific implementation method provided in this case, Figure 4 As shown, the transmission assembly 1 includes a first housing 17 with a hollow structure, a dust cover 16, a motor 11, an input gear 12, a transmission wheel 13, a lead screw 14 and a lead screw rotating nut 15, and the bottom end of the lead screw 14 is connected to the variable diameter pressure head assembly 2, wherein,

[0035] The dust cover 16 can cover the first housing 17. The lead screw 14 is continuously provided with external threads in the circumference and is provided with limiting grooves 141 at intervals in the axial direction. A limiting cap 143 is provided at the top and a docking column 142 is provided at the bottom. The diameter of the limiting cap 143 is larger than the diameter of the lead screw 14. The diameter of the docking column 142 is smaller than the diameter of the lead screw 14 and is provided with external threads in the circumference. The lead screw 14 is connected to the variable diameter pressure head assembly 2 through the docking column 142. The top of the lead screw 14 freely passes through one end of the dust cover 16 and leaves an extended section, and the bottom end freely passes through one end of the first housing 17 and leaves an extended section.

[0036] A transmission wheel 13 is horizontally installed in the first shell 17 in a rotating manner, and a screw rotating nut 15 is installed on the screw 14 at a corresponding position with the transmission wheel 13. The motor 11 is installed at the other end of the dust cover 16. The output end of the motor 11 passes through the dust cover 16 and partially extends out of the first shell 17 and is installed with an input gear 12 in an interference fit manner. The screw rotating nut 15 is meshed with one end of the transmission wheel 13, and the input gear 12 is meshed with the other end of the transmission wheel 13. The screw rotating nut 15 is sleeved on the screw 14 and is threadedly connected to the screw 14. Under the drive of the input gear 12 and transmitted through the transmission wheel 13, the screw rotating nut 15 can be driven to rotate, thereby realizing the movement of the screw 14 in the vertical direction.

[0037] Further, such as Figure 4 and Fig.11 As shown, a guide boss 18 is arranged on the bottom surface of the first housing 17 at intervals at the corresponding position passing through the lead screw 14. The guide boss 18 is arranged in an arc structure and is provided with an anti-rotation extension section. One end of the anti-rotation extension section is in contact with the lead screw 14. Under the action of the limit groove 141, the rotation of the lead screw 14 can be limited. The transmission wheel 13 and the input gear 12 use the same modulus, and the diameter of the transmission wheel 13 is larger than the input gear 12. The output shaft of the motor is connected to the input gear 12 by interference fit, and the input gear 12 is decelerated and torque increased through the transmission wheel 13; the other end of the transmission wheel 13 is engaged with the lead screw rotating nut 15 for power transmission. The outer circle of the lead screw transmission nut is designed with gear teeth, and the gear module and the transmission wheel 13 have the same modulus. The lead screw 14 will be driven to move up and down in the vertical direction by the rotation of the lead screw rotating nut and the guide boss 18 to prevent the lead screw from rotating, but the lead screw itself will not rotate.

[0038] As a specific implementation method provided in this case, Figure 2 As shown, the variable diameter pressure head assembly 2 includes a guide disc 21, a pressure rod 22, a guide connector 23, a fastening nut 24 and a screw connector 25. A hollow first mounting column 251 is provided in the central area of ​​the top surface of the screw connector 25, and mounting bosses 252 are provided at intervals on the bottom surface. The first mounting column 251 is threadedly connected to the docking column 142, wherein,

[0039] The guide connector 23 is provided with a hollow, cross-shaped structure, a first mounting hole 231 is provided in the hollow area, and each branch rod on the top surface is provided with a mounting platform 232, the height of the mounting platform 232 is greater than the height of the mounting boss 252, and a cross hole is provided on the bottom surface;

[0040] The pressure rod 22 includes a first rectangular block 221 and a first connecting rod 222 which are arranged in an integrated structure. The first rectangular block 221 is movably installed in the hollow area of ​​the guide connecting member 23, and one end of the first connecting rod 222 passes through a cross hole.

[0041] A hollow second mounting column 211 is disposed in the central area of ​​the top surface of the guide disc 21, and a first arc-shaped guide hole 212 is disposed adjacent to the second mounting column 211, with the center of the first arc-shaped guide hole 212 facing the second mounting column 211;

[0042] The fastening nut 24 is a variable cross-section structure, the diameter of its large end is larger than the diameter of the first mounting hole 231, and the diameter of the small end is less than or equal to the diameter of the first mounting hole 231, and the lower end of the fastening nut 24 is threadedly connected to the second mounting column 211, which can lock the guide disc 21, and one end of the first connecting rod 222 passes through the cross hole and leaves an extended section, which can press down the bearing on the shaft under the drive of the screw 14; after the fastening nut 24 is connected to the second mounting column 211, the mounting boss 252 is nested in the mounting platform 232 and fastened by bolts to achieve the fixation of the guide connector 23 and the screw connector 25.

[0043] Working principle: The guide disc 21 and the guide connector 23 jointly limit the movement of the pressure rod 22. The pressure rod can move radially in the guide groove of the guide connector. The four first connecting rods 222 are driven to achieve synchronous contraction and expansion through the rotation limit of the guide disc. When scaling, the four cylindrical pressure rods achieve synchronous movement. The centers of the four cylindrical pressure rods are always on the same circle, which can adapt to the pressing of the inner and outer rings of bearings with different radii. The fastening nut is used to fix and fasten the guide disc 21 to prevent the guide disc from falling off in the vertical direction, and to prevent the guide disc 21 from rotating and shaking after being adjusted to the desired position.

[0044] Furthermore, the guide disc 21 is provided with scale lines in the circumferential direction to adapt to the downward pressure on the outer rings of bearings of different models;

[0045] A tightening adjustment rod 100 is arranged on the outer circumference of the large end of the tightening nut 24, and one end of the tightening adjustment rod 100 extends horizontally from the gap between any two adjacent mounting platforms 232. The tightness of the guide disc 21 and the guide connecting member 23 can be adjusted by rotating the tightening adjustment rod. The radial position of each rectangular block in the guide connecting member 23 is adjusted by rotating the guide disc 21, so that each connecting rod can press down the inner ring or outer ring of bearings of different models.

[0046] As a specific implementation method provided in this case, Figure 3 As shown, the variable diameter clamping assembly 3 includes a first guide gear plate 31, a second guide gear plate 32, a first clamping contact 33, a second clamping contact 34, a first contact guide plate 35, a second contact guide plate 36, a transmission bevel gear 38, an axial limiting wheel 39 and a support plate 37. The first clamping contact 33 has the same structure as the second clamping contact 34, and the bottom surface of the first contact guide plate 35 has the same structure as the top surface of the second contact guide plate 36. Working principle: The first guide gear plate 31 and the second guide gear plate 32 rotate in opposite directions driven by the transmission bevel gear 38, and correspondingly drive the first contact guide plate 35 and the second contact guide plate 36 to rotate in opposite directions. The corresponding first clamping contacts 33 and second clamping contacts 34 in the first contact guide plate 35 and the second contact guide plate 36 clamp shafts of different sizes respectively; the axial limiting wheel 39 rotates and presses the second guide gear plate 32 in the vertical direction, but the second guide gear plate 32 can rotate under the drive of the transmission bevel gear 38, wherein,

[0047] A support plate 37 is installed in the central area of ​​the frame 5. A support groove 371 is opened in the central area of ​​the support plate 37. The support groove 371 is used to support the bottom end of the shaft. A first ring ear 372 is arranged on the top surface of the support plate 37 and adjacent to the support groove 371.

[0048] The first guide gear disc 31 is a conical structure, and the large end surface of the first guide gear disc 31 is provided with a first arc groove matching the shape of the first ring ear 372, a hole for the shaft to pass through is provided in the central area of ​​the small end surface of the first guide gear disc 31 and a first arc groove 311 is provided, and a second arc guide hole 312 is provided adjacent to the first arc groove 311, and the center of the second arc guide hole 312 faces the center point of the first guide gear disc 31, wherein the first arc groove is installed on the first ring ear 372 to support the first guide gear disc 31 in the vertical direction, the first arc groove 311 is not connected with the second arc guide hole 312, and the corresponding diameter is larger than the respective diameters corresponding to the second arc guide hole 312;

[0049] The bottom surface of the first contact guide plate 35 is provided with first T-slots 351 at intervals, and a hole for the shaft to pass through is provided in the central area. The large end of the first T-slot 351 is away from the center point of the first contact guide plate 35 and is in contact with the outer circumferential surface of the first contact guide plate 35. The hole in the central area of ​​the first contact guide plate 35 is connected to the first T-slot 351. The first T-slot 351 is used to movably install the first clamping contact 33. The bottom surface of the first contact guide plate 35 is provided with a first arc-shaped protrusion 352 at a position corresponding to the first arc-shaped groove 311. The first arc-shaped groove 311 is installed on the first contact guide plate 35. The first arc-shaped protrusion 352 realizes the support of the small end of the first guide gear plate 31 facing the first contact guide plate 35 in the vertical direction, wherein the first clamping contact 33 includes a second rectangular block 331 and a second connecting rod 332 arranged in an integrated structure, the second connecting rod 332 is arranged on the bottom surface of the second rectangular block 331, one end of the second rectangular block 331 is provided with a first conical portion 3311 and the small end of the first conical portion 3311 faces the center of the first contact guide plate 35, and the small end of the first conical portion 3311 is arranged with a first arc surface structure 3312, which can tightly clamp the shaft;

[0050] The second rectangular block 331 is installed in the first T-slot 351 in a manner that it can move radially along the first contact guide plate 35. One end of the second connecting rod 332 passes through the first T-slot 351 and moves in the second arc-shaped guide hole 312, so that each first arc surface structure 3312 moves radially along the first contact guide plate 35 to clamp or release the shaft.

[0051] The bottom surface of the second contact guide plate 36 and the top surface of the first contact guide plate 35 are spliced ​​by a slot structure, so that the top surface of the first contact guide plate 35 supports the bottom surface of the second contact guide plate 36; the top surface of the second contact guide plate 36 is provided with second T-slots 361 at intervals, and the central area is provided with a hole for the shaft to pass through, the large end of the second T-slot 361 is away from the center point of the second contact guide plate 36 and fits with the outer circumferential surface of the second contact guide plate 36, the hole in the central area of ​​the second contact guide plate 36 is connected to the second T-slot 361, and the second T-slot 361 is movably mounted on the second clamping contact 34, wherein the second clamping contact 34 includes an integrated The third rectangular block 341 and the third connecting rod 342 are provided in the structure, and the third connecting rod 342 is provided on the bottom surface of the third rectangular block 341. A second conical portion is provided at one end of the third rectangular block 341, and the small end of the second conical portion faces the center of the second contact guide plate 36. The small end of the second conical portion is provided with a second arc surface structure, which can tightly clamp the shaft; the third rectangular block 341 is installed in the second T-slot 361 in a radially movable manner along the second contact guide plate 36, and one end of the third connecting rod 342 passes through the second T-slot 361 in turn and leaves a protruding section, and each second arc surface structure moves radially along the second contact guide plate 36 to clamp or release the shaft;

[0052] A second arc-shaped protrusion 362 is provided on the top surface of the second contact guide disk 36 and between two adjacent second T-slots 361. A slot is provided at the corresponding position of the bottom surface of the second guide gear disk 32 and the second arc-shaped protrusion 362. The second guide gear disk 32 is provided with a conical structure, with the small end of the second guide gear disk 32 as the bottom surface and the large end as the top surface. The second arc-shaped protrusion 362 is docked in the slot to realize the support of the second contact guide disk 36 on the second guide gear disk 32 in the vertical direction. A hole for the shaft to pass through is provided in the central area of ​​the second guide gear disk 32, and third arc-shaped guide holes 321 are provided at intervals on the large end surface. The extended section of the third connecting rod 342 passes through the third arc-shaped guide hole 321 accordingly. When the second guide gear disk 32 rotates, the third connecting rod 342 can be driven to move in the third arc-shaped guide hole 321, and the third rectangular block 341 can be driven to move radially along the second contact guide disk 36 in the second T-slot 361, so that the second arc surface structure can tightly clamp or release the shaft.

[0053] The transmission bevel gear 38 is placed vertically, one end of which is meshed with the first guide gear plate 31, and the other end is meshed with the second guide gear plate 32, and can drive the first contact guide plate 35 and the second contact guide plate to rotate in opposite directions, wherein the central area of ​​the large end surface of the transmission bevel gear 38 is connected to one end of a transmission rod 381, and the transmission rod 381 is mounted on the frame 5 through a mounting block 383, and the transmission rod 381 is rotatably mounted on the mounting block 383, for example, an external thread is provided on the transmission rod 381, and a corresponding internal thread is provided on the mounting hole 383, and a rotating handle 382 is installed on the other end of the transmission rod 381;

[0054] The axial limiting wheel 39 is installed on the frame 5 through an L-shaped fixing rod 391, wherein one end of the L-shaped fixing rod 391 is fixedly installed on the frame 5, and the other end is rotatably installed with the axial limiting wheel 39. The axial limiting wheel 39 contacts the large end surface of the second contact guide plate 36 and is used for axial limiting of the second contact guide plate 36.

[0055] Furthermore, the third arc-shaped guide hole 321 rotates in the opposite direction to the second arc-shaped guide hole 312, so as to adapt to the reverse rotation of the two guide gear plates, that is, the transmission bevel gear rotates, and one of the two guide gear plates rotates clockwise and the other rotates counterclockwise. The guide gear plate and the contact guide plate jointly restrict the movement of the clamping contacts, and the six clamping contacts will achieve synchronous scaling and can clamp shafts of different thicknesses. The axial limit wheel is pressed on the surface of the guide gear plate, mainly to prevent the axial movement of the guide gear plate during bevel gear transmission.

[0056] As a specific embodiment provided in this case, the height adjustment assembly 4 includes a first rod 41 and a second rod 42, and the first rod 41 is arranged in a T-shaped structure, wherein:

[0057] The large end of the first rod 41 is fixedly mounted on the bottom surface of the first housing 17, and the second rod 42 is fixedly mounted on the frame 5 and has a groove on one side thereof that matches the shape of the small end of the first rod 41;

[0058] The small end of the first rod 41 is provided with first threaded holes at intervals, and the groove is provided with second threaded holes at intervals. The height position of the first rod 41 can be adjusted by passing the butterfly bolt 43 through the first threaded hole and the second threaded hole at different height positions. That is, when adjusting to the target height, tighten the butterfly bolt 43 to prevent the upper adjustment component from moving in the vertical direction during operation. Other height adjustment components can also be applied.

[0059] Furthermore, the L-shaped fixing rod 391 is a height-adjustable rod suitable for pressing the second guide gear plate 32 .

[0060] Working method: When the entire device is working to press the bearing into the shaft end, first put the installation shaft into the placement hole in the middle of the variable diameter clamping assembly, then rotate the rotating handle, the transmission bevel gear rotates and drives the upper and lower guide gear plates to rotate at the same time. Figure 3 The six clamping contacts in the clamping mechanism are contracted synchronously, and while the clamping shaft is aligned, the shaft is kept vertical in the vertical direction, and the shaft clamping is completed.

[0061] Rotate the guide disc 21 in the variable diameter pressure head assembly 2, adjust the pressing radius according to the scale on the disc, so that the pressure rod 22 is scaled to the required radius size, and tighten the fastening nut 24 to prevent the position of the pressure rod 22 from changing. At this time, the motor 11 rotates forward, and the screw 14 in the transmission assembly moves downward through the transmission chain, driving the variable diameter pressure head assembly 2 to move downward, and the pressure rod 22 will contact the inner ring or outer ring end face of the bearing 8. When the bearing end face is completely parallel to the mounting shaft end face, the four pressure rods 22 will contact the bearing end face at the same time: if the bearing end face is not completely parallel to the mounting shaft end face, the pressure rod that first contacts the bearing end face will push the bearing to adjust. When the pressure rods contact the end faces one after another, the bearing end face and the mounting shaft end face tend to be completely parallel. The variable diameter pressure head assembly 2 continues to move downward under the drive of the screw, and the bearing is pressed into the mounting shaft 7. The journal is matched with the shaft shoulder, and the bearing is pressed in.

[0062] The motor 11 reverses, the lead screw 14 rises, driving the variable diameter pressure head assembly 2 to rise and return to the initial position. The height adjustment assembly 4 can be adjusted according to the length of the shaft 8 to make the variable diameter pressure head assembly 2 at the required initial height. Turning the knob drives the bevel gear to rotate, and the two guide gear plates rotate, driving the two clamping contacts to expand, remove the shaft 8, and complete the bearing 7 pressing work. The motor can be repeatedly rotated forward and reversed to drive the lead screw to reciprocate up and down for assembly line operation.

[0063] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A shaft end bearing auxiliary installation device, suitable for the installation of bearings on shafts of different models, characterized in that: It includes a workbench and a frame installed on the workbench, and a height adjustment component and a variable diameter clamping component are installed adjacent to the top surface of the frame, wherein: The height adjustment assembly supports the transmission assembly in a manner that the height is adjustable in the vertical direction. The transmission assembly is equipped with a variable diameter pressure head assembly, and the transmission assembly can drive the variable diameter pressure head assembly to move in the vertical direction. The variable diameter pressure head assembly is suitable for pressing down bearings of different models; The variable diameter clamping assembly can tightly clamp shafts of different models, and the bearing initially installed on the shaft is firmly installed on the shaft by the downward pressure generated by the variable diameter pressure head assembly.

2. The shaft end bearing auxiliary installation device according to claim 1, characterized in that: The frame is installed on the workbench in a manner that the end surface is horizontal.

3. The shaft end bearing auxiliary installation device according to claim 1, characterized in that: The transmission assembly includes a first housing with a hollow structure, a dust cover, a motor, an input gear, a transmission wheel, a lead screw and a lead screw rotating nut, and the bottom end of the lead screw is connected to the variable diameter pressure head assembly, wherein: The dust cover can cover the first housing, the lead screw is continuously provided with external threads in the circumference and limited grooves are provided at intervals in the axial direction, a limited cap is provided at the top and a docking column is provided at the bottom, the diameter of the limited cap is larger than the diameter of the lead screw, the diameter of the docking column is smaller than the diameter of the lead screw and is provided with external threads in the circumference, and is connected to the reducer pressure head assembly through the docking column; the top end of the lead screw freely passes through one end of the dust cover and leaves an extended section, and the bottom end freely passes through one end of the first housing and leaves an extended section; The transmission wheel is horizontally installed in the first shell in a rotatable manner, and a screw rotating nut is installed on the screw at a corresponding position with the transmission wheel. The motor is installed on the other end of the dust cover, and the output end of the motor passes through the dust cover and partially extends out of the first shell and is installed with the input gear in an interference manner. The screw rotating nut is meshed with one end of the transmission wheel, and the input gear is meshed with the other end of the transmission wheel. The screw rotating nut is sleeved on the screw and is threadedly connected to the screw. Under the drive of the input gear and through the transmission wheel, the screw rotating nut can be driven to rotate, thereby realizing the movement of the screw in the vertical direction.

4. The shaft end bearing auxiliary installation device according to claim 3, characterized in that: Guide bosses are arranged on the bottom surface of the first shell at intervals at corresponding positions passing through the lead screw. The guide bosses are arranged in an arc-shaped structure and are provided with anti-rotation extension sections. One end of the anti-rotation extension sections is in contact with the lead screw. Under the action of the limiting groove, the rotation of the lead screw can be limited.

5. The shaft end bearing auxiliary installation device according to claim 4, characterized in that: The variable diameter pressure head assembly includes a guide disc, a pressure rod, a guide connector, a fastening nut and a screw connector. A hollow first mounting column is arranged in the central area of ​​the top surface of the screw connector, and mounting bosses are arranged at intervals on the bottom surface. The first mounting column is threadedly connected to the docking column, wherein: The guide connector is provided in a hollow, cross-shaped structure, a first mounting hole is provided in the hollow area and each branch rod on the top surface is provided with a mounting platform, the height of the mounting platform is greater than the height of the mounting boss, and a cross hole is provided on the bottom surface; The compression rod comprises a first rectangular block and a first connecting rod which are arranged in an integral structure, wherein the first rectangular block is movably mounted in the hollow area of ​​the guide connecting member, and one end of the first connecting rod passes through the cross hole; A hollow second mounting post is disposed in the central area of ​​the top surface of the guide disc, and a first arc-shaped guide hole is disposed adjacent to the second mounting post, with the center of the first arc-shaped guide hole facing the second mounting post; The fastening nut is a variable cross-section structure, the diameter of its large end is larger than the diameter of the first mounting hole, the diameter of its small end is smaller than or equal to the diameter of the first mounting hole, and the lower end of the fastening nut is threadedly connected to the second mounting column, which can lock the guide disc, and one end of the first connecting rod passes through the cross hole and leaves an extended section, which can press down the bearing on the shaft under the drive of the lead screw; after the fastening nut is connected to the second mounting column, the mounting boss is nested in the mounting platform and fastened by bolts to achieve the fixation of the guide connector and the lead screw connector.

6. The shaft end bearing auxiliary installation device according to claim 5, characterized in that: The guide disc is provided with scale lines on its circumference to adapt to the downward pressure on the outer ring or inner ring of bearings of different models; A tightening adjustment rod is arranged on the outer circumference of the large end of the tightening nut, and one end of the tightening adjustment rod extends horizontally from the gap between any two adjacent mounting platforms. The tightness of the guide disc and the guide connecting piece can be adjusted by operating and rotating the tightening adjustment rod. The radial position of each rectangular block in the guide connecting piece is adjusted by rotating the guide disc, so that each connecting rod can press down the outer ring of bearings of different models.

7. The shaft end bearing auxiliary installation device according to claim 6, characterized in that: The variable diameter clamping assembly includes a first guide gear plate, a second guide gear plate, a first clamping contact, a second clamping contact, a first contact guide plate, a second contact guide plate, a transmission bevel gear, an axial limiting wheel and a support plate, wherein: The support plate 37 is installed in the central area of ​​the frame, and a support groove is opened in the central area of ​​the support plate 37, and the support groove is used to support the bottom end of the shaft. A first ring ear is arranged on the top surface of the support plate and adjacent to the support groove; The first guide gear plate is provided with a conical structure, and a first arc groove matching the shape of the first ring ear is provided on the large end surface of the first guide gear plate, a hole for the shaft to pass through is provided in the central area of ​​the small end surface of the first guide gear plate and a first arc groove is provided, and a second arc guide hole is provided adjacent to the first arc groove, and the center of the second arc guide hole faces the center point of the first guide gear plate, wherein the first arc groove is installed on the first ring ear to support the first guide gear plate in the vertical direction; The bottom surface of the first contact guide disk is provided with first T-slots at intervals, and a hole for the shaft to pass through is provided in the central area, the large end of the first T-slot is away from the center point of the first contact guide disk and is in contact with the outer circumferential surface of the first contact guide disk, the hole in the central area of ​​the first contact guide disk is connected to the first T-slot, the first T-slot is used to movably install the first clamping contact, and a first arc protrusion is provided on the bottom surface of the first contact guide disk at a position corresponding to the first arc-shaped groove, and the first arc-shaped groove is installed on the first arc-shaped groove to realize the support of the small end of the first guide gear disk facing the first contact guide disk in the vertical direction, wherein the first clamping contact includes a second rectangular block and a second connecting rod with an integrated structure, the second connecting rod is provided on the bottom surface of the second rectangular block, a first conical portion is provided at one end of the second rectangular block, and the small end of the first conical portion faces the center of the first contact guide disk, and the small end of the first conical portion is provided with a first arc surface structure, which can tightly clamp the shaft; The second rectangular block is installed in the first T-slot in a manner that it can move radially along the first contact guide plate, one end of the second connecting rod passes through the first T-slot and moves in the second arc-shaped guide hole, and each of the first arc surface structures can move radially along the first contact guide plate to clamp or release the shaft; The bottom surface of the second contact guide plate and the top surface of the first contact guide plate are spliced ​​with a slot structure, so that the top surface of the first contact guide plate supports the bottom surface of the second contact guide plate; the top surface of the second contact guide plate is arranged with second T-slots at intervals, and the central area is provided with a hole for the shaft to pass through, the large end of the second T-slot is away from the center point of the second contact guide plate and is in contact with the outer circumferential surface of the second contact guide plate, the hole in the central area of ​​the second contact guide plate is connected with the second T-slot, and the second T-slot is movably mounted with a second clamping contact, wherein the second clamping contact includes an integrated structure A third rectangular block and a third connecting rod are disposed, the third connecting rod is disposed on the bottom surface of the third rectangular block, one end of the third rectangular block is provided with a second tapered portion and the small end of the second tapered portion faces the center of the second contact guide plate, and the small end of the second tapered portion is provided with a second arc surface structure, which can tightly clamp the shaft; the third rectangular block is installed in the second T-slot in a manner that it can be moved radially along the second contact guide plate, one end of the third connecting rod passes through the second T-slot in sequence and leaves a protruding section, and each of the second arc surface structures moves radially along the second contact guide plate to clamp or release the shaft; A second arc-shaped protrusion is arranged on the top surface of the second contact guide disk and between two adjacent second T-slots, a clamping groove is arranged at the corresponding position of the bottom surface of the second guide gear disk and the second arc-shaped protrusion, and the second guide gear disk is arranged in a conical structure, with the small end of the second guide gear disk as the bottom surface and the large end as the top surface, and the second arc-shaped protrusion docks in the clamping groove to realize the support of the second contact guide disk on the second guide gear disk in the vertical direction; a hole for the shaft to pass through is arranged in the central area of ​​the second guide gear disk, and third arc-shaped guide holes are arranged at intervals on the large end surface, and the extended section of the third connecting rod passes through the third arc-shaped guide hole correspondingly. When the second guide gear disk rotates, the third connecting rod can be driven to move in the third arc-shaped guide hole, thereby driving the third rectangular block to move radially along the second contact guide disk in the second T-slot, so as to realize the second arc surface structure to tightly clamp or release the shaft; The transmission bevel gear is placed vertically, one end of which is meshed with the second guide gear plate, and the other end is meshed with the first guide gear plate, and can drive the first contact guide plate and the second contact guide to rotate in opposite directions, wherein the central area of ​​the large end surface of the transmission bevel gear is connected to one end of the transmission rod, the transmission rod is mounted on the frame through a mounting block, and the transmission rod is rotatably mounted on the mounting block, and a rotating handle is installed at the other end of the transmission rod; The axial limiting wheel is installed on the frame through an L-shaped fixing rod, wherein one end of the L-shaped fixing rod is fixedly installed on the frame, and the other end is rotatably installed with the axial limiting wheel, and the axial limiting wheel contacts the large end surface of the second contact guide plate and is used for axial limiting of the second contact guide plate.

8. The shaft end bearing auxiliary installation device according to claim 7, characterized in that: The third arc-shaped guide hole has a rotation direction opposite to that of the second arc-shaped guide hole.

9. The shaft end bearing auxiliary installation device according to claim 7, characterized in that: The height adjustment assembly includes a first rod and a second rod, wherein the first rod is arranged in a T-shaped structure, wherein: The large end of the first rod is fixedly mounted on the bottom surface of the first housing, and the second rod is fixedly mounted on the frame and has a groove on one side thereof that matches the shape of the small end of the first rod; The small end of the first rod is provided with first threaded holes at intervals, and the groove is provided with second threaded holes at intervals. The height position of the first rod can be adjusted by passing a butterfly bolt through the first threaded hole and the second threaded hole at different height positions.

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