Bearing cap fixing device

Abstract

The present invention provides a bearing cover fixing device, which is used to fix the bearing cover, and includes at least one clamp, the clamp includes a mounting plate, a supporting device, a clamping mechanism, a limiting assembly, and a centering clamping assembly that can extend into the interior of the bearing cover, the supporting device, the clamping mechanism, the limiting assembly, and the centering clamping assembly are all mounted on the mounting plate; the centering clamping assembly and the limiting assembly are arranged opposite to each other, and a clamping space is formed between the centering clamping assembly and the limiting assembly, the clamping space is used to clamp the fixing part of the bearing cover, the limiting assembly is used to abut against the outer side wall of the fixing part, and the centering clamping assembly is used to abut against the inner side wall of the fixing part. Through this structural design, when processing different processing surfaces of the bearing cover, only one clamping is needed to complete the processing of the different processing surfaces of the bearing cover, so that clamping is convenient, and processing efficiency is further improved and production costs are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing equipment, and in particular to a bearing cover fixing device. Background Art

[0002] The bearing cover is an important component of the vehicle drive axle assembly. It is usually assembled with the bridge housing and needs to be adapted to the relevant structures and components of the main reducer. Therefore, it has a relatively complex external structure.

[0003] The existing integral bearing cap needs three processes to complete the processing, for example, the first process: processing the mounting surface, positioning hole and bearing hole; the second process: countersinking, the third process: processing the locking plate threaded hole and plane; the first, second and third processes are respectively completed by two vertical machining centers and one horizontal machining center (machined together after assembly). However, since the first, second and third processes are respectively carried out on three different machining surfaces of the bearing cap, different machining surfaces need to be machined in different machining centers, resulting in multiple clamping, which increases the manual operation time of each process, resulting in low machining efficiency and increased costs. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a bearing cover fixing device that is easy to clamp.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A bearing cover fixing device, which is used to fix the bearing cover, includes at least one clamp, the clamp includes a mounting plate, a supporting device, a clamping mechanism, a limiting assembly and a centering clamping assembly that can extend into the interior of the bearing cover, the supporting device, the clamping mechanism, the limiting assembly and the centering clamping assembly are all installed on the mounting plate; the centering clamping assembly and the limiting assembly are arranged opposite to each other, and a clamping space is formed between the centering clamping assembly and the limiting assembly, the clamping space is used to clamp the fixing part of the bearing cover, the limiting assembly is used to abut the outer side wall of the fixing part, and the centering clamping assembly is used to abut the inner side wall of the fixing part.

[0007] Furthermore, the centering clamping assembly is provided with an elastic device, which is used to support the inner wall of the fixing portion; when the bearing cover is installed into the clamping space, the elastic device moves in the direction away from the limiting assembly under the push of the bearing cover; when the bearing cover is installed into the clamping space, the elastic device moves in the direction close to the limiting assembly under the action of the elastic force, so that the elastic device straightens the position of the bearing cover.

[0008] Furthermore, it includes a driving device, which is installed on the mounting plate; the centering clamping assembly is provided with an elastic device and a locking mechanism, the elastic device is used to abut against the inner wall of the fixed part, the locking mechanism is connected to the driving device and abuts against one end of the elastic device away from the limiting assembly, and the locking mechanism pushes the elastic device when driven by the driving device, so that the centering clamping assembly is in a locked state.

[0009] Furthermore, the centering and clamping assembly further includes a centering base, which is installed on the mounting plate; the elastic device includes an elastic connector and a centering block, which is installed on the centering base, and one end of the elastic connector is connected to the centering block, and the centering block is used to support the inner wall of the fixed part.

[0010] Furthermore, a correction portion protrudes from both end surfaces of the centering block along the length direction of the clamp, and the correction portion is used to abut against the inner side wall of the fixing portion.

[0011] Furthermore, the locking mechanism includes a centering pressure plate and a push piece, the bottom end of the centering pressure plate is connected to the driving device, and the top end is fixedly connected to the push piece. The centering pressure plate rotates under the drive of the driving device and drives the push piece to rotate, so that the push piece pushes the centering block.

[0012] Furthermore, the elastic connecting member includes a shaft and a spring, the shaft is movably connected to the centering base, a groove is provided at one end away from the centering block, the spring is installed in the groove, and the shaft is fixedly connected to the centering block by screws.

[0013] Furthermore, it includes a driving device, which is installed on the mounting plate and is provided with a telescopic rod that can be extended into the interior of the bearing cover; the clamping mechanism includes a pressure plate for pressing the top surface of the bearing cover, and the pressure plate is located above the centering clamping assembly, and a slot is provided on one end surface of the pressure plate close to the telescopic rod, and the slot is engaged with the telescopic rod.

[0014] Furthermore, the supporting device includes two positioning studs with adjustable heights and a floating supporting mechanism, the two positioning studs are used to support the bottom of the clamping part of the bearing cover, the floating supporting mechanism is arranged corresponding to the clamping mechanism, and is used to support the bottom of the fixed part, and the floating supporting mechanism can rotate relative to the horizontal direction to adjust the horizontal position of the bearing cover.

[0015] Furthermore, the floating support mechanism includes a floating positioning block and a support, the support is installed on the mounting plate, the top surface of the support is provided with a mounting groove along the length direction of the clamp and passes through the opposite side walls of the support, and the floating positioning block is rotatably installed in the mounting groove through a pin shaft.

[0016] Furthermore, the clamping mechanism includes an end face clamping assembly, which is rotatably mounted on the mounting plate, and the end face clamping assembly includes a pressing part, which has two pressing parts. The two pressing parts are respectively located at both ends of the end face clamping assembly and are used to press the top surface of the fixed part; both ends of the top surface of the floating positioning block have a convex part protruding along the length direction of the clamp, respectively, and the two convex parts correspond to the two pressing parts respectively, and the convex part is used to support the bottom surface of the fixed part, and the pin shaft is located between the two convex parts.

[0017] Furthermore, the limiting assembly includes a first positioning seat and a second positioning seat, the first positioning seat and the second positioning seat are installed on the mounting plate, and the first positioning seat and the second positioning seat are respectively detachably connected to an end face close to the centering and clamping assembly with a limiting block, and the two limiting blocks are respectively used to support the outer side wall of the fixing part.

[0018] Furthermore, the clamping mechanism includes an end face clamping assembly, which is rotatably mounted on the mounting plate to achieve clamping or loosening of the fixed part. The end face clamping assembly includes a rotating pressure plate and a pressing part. The rotating pressure plate and the pressing part are located above the limiting assembly. The top surface of the rotating pressure plate is provided with an opening that passes through the rotating pressure plate, and the pressing part is used to press the top surface of the fixed part.

[0019] The beneficial effects of the present invention are as follows: the centering and clamping assembly of the bearing cover fixing device of the present invention can extend into the interior of the bearing cover and a clamping space for clamping the fixing portion of the bearing cover is formed between the centering and clamping assembly and the limiting assembly, the limiting assembly is used to abut against the outer wall of the fixing portion, and the centering and clamping assembly is used to abut against the inner wall of the fixing portion to clamp the bearing cover, that is, the centering and clamping assembly and the limiting assembly clamp the bearing cover from the inside and outside directions respectively. Since the centering and clamping assembly extends into the interior of the bearing cover to fix it, it does not occupy the tool travel space required for machining the machining surface of the bearing cover, that is, it provides travel space for the machining tool of the CNC machine tool. When machining different machining surfaces of the bearing cover, only one clamping is needed to complete the machining of the different machining surfaces of the bearing cover, thereby realizing convenient clamping, further improving machining efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An exploded view of the bearing cover fixing device of the present invention;

[0021] Figure 2 for Figure 1 Another perspective stereoscopic composite image;

[0022] Figure 3 for Figure 1 A partial top view of

[0023] Figure 4 for Figure 2 A three-dimensional cross-sectional view of

[0024] Figure 5 for Figure 2 A cross-sectional view of

[0025] Figure 6 for Figure 4 A partial top view of the clamp when it is not locked;

[0026] Figure 7 for Figure 6 Schematic diagram of the clamp in the locked state. DETAILED DESCRIPTION

[0027] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described:

[0028] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] like Figures 1 to 7As shown, the present embodiment provides a bearing cap fixing device 100, which is installed on a CNC machine tool workbench (not shown) and is used to fix the bearing cap 7. It can rotate with the workbench to facilitate processing of different processing surfaces of the bearing cap 7. The bearing cap fixing device 100 includes at least one clamp. In this embodiment, there are two clamps, which can process two bearing caps 7 at the same time. The clamp includes a mounting plate 1, a driving device 6, a supporting device 2, a clamping mechanism 3, a limit assembly 4 and a centering clamping assembly 5. The supporting device 2, the clamping mechanism 3, the limit assembly 4 and the centering clamping assembly 5 are all installed on the mounting plate 1. The clamp also includes a CNC turntable (not numbered). The CNC turntable can drive the fixed bearing cap 7 to rotate around the X-axis of the vertical machining center (not shown), so that it can be stopped and locked at any angle to facilitate processing and clamping.

[0031] like Figure 1 , Figure 4 As shown, in this embodiment, the bearing cap 7 is provided with a blank hole 70 for fixing it on a fixture, and the bearing cap 7 has a clamping portion 76 and a fixing portion 71 at the opposite front and rear ends along the radial direction of the blank hole 70, respectively, the clamping portion 76 has a plurality of surfaces 75 to be processed, and the top of the fixing portion 71 also has a surface 75 to be processed. The interior of the bearing cap 7 refers to the space formed by the blank hole 70, and the side wall of the blank hole 70 is the inner side wall 73 of the bearing cap 7 (that is, the inner side wall 73 of the fixing portion 71), and its outer side wall 72 (that is, the outer side wall 72 of the fixing portion 71).

[0032] The mounting plate 1 is mounted on a workbench via a CNC turntable (unnumbered), and can rotate with the workbench. Specifically, the CNC turntable can be used as a controllable axis of a vertical machining center, which drives the mounting plate 1 to rotate and can be stopped and locked at any angle. When it is necessary to process other surfaces to be processed of the bearing cover, the rotating fixture can process other surfaces to be processed, which facilitates the clamping and processing of the bearing cover 7.

[0033] The driving device 6 is automatically controlled by a hydraulic control system, and is an oil cylinder, which provides a power source for the clamp. The oil cylinder is installed at the bottom of the mounting plate 1, and has a retractable telescopic rod 61. In this embodiment, there are multiple driving devices 6, and the telescopic rod 61 of one driving device 6 can extend into the bearing cover 7.

[0034] The support device 2 includes two height-adjustable positioning studs 21 and a floating support mechanism 22. The two positioning studs 21 are arranged side by side on the same straight line (such as Figure 3 ), the floating support mechanism 22 is arranged opposite to the two positioning studs 21 (such as Figure 2 , Figure 3), and are located on another straight line. The floating support mechanism 22 and the two positioning studs 21 form three supporting points respectively, and the lines between the three supporting points form a triangle, which is used to locate the horizontal position of the bearing cover 7. In this embodiment, the two positioning studs 21 are used to support the bottom surface of the clamping portion 76 of the bearing cover 7, and the floating support mechanism 22 is used to support the bottom surface of the fixing portion 71. When the bearing cover 7 is installed, the bearing cover 7 has an uneven height in the horizontal direction. In order to solve this technical problem, the floating support mechanism 22 is set to be able to rotate relative to the horizontal direction (i.e., rotate up and down) to flexibly adjust the horizontal position of the bearing cover 7, and the amplitude of its rotation is controlled within the tolerance range of the horizontal position of the bearing cover 7.

[0035] like Figure 1 , Figure 5 As shown, in this embodiment, the floating support mechanism 22 includes a floating positioning block 223 and a support 221, and the support 221 is fixedly mounted on the mounting plate 1 by screws. The top surface 74 of the support 221 is provided with a mounting groove 2211 that penetrates the left and right side walls opposite to the support 221 along the length direction of the fixture, and the mounting groove 2211 provides a rotation space for the floating positioning block 223. The floating positioning block 223 is rotatably mounted in the mounting groove 2211 by a pin shaft 224, and there is a gap between the floating positioning block 223 and the bottom wall of the mounting groove 2211, and the gap can be determined according to the horizontal height tolerance range of the bearing cover 7. In the process of installing the bearing cover 7, the floating positioning block 223 rotates up and down with the pin shaft 224 as the axis to adjust the horizontal height of the bearing cover 7 so that the bearing cover 7 remains horizontal.

[0036] The left and right ends of the top surface 74 of the floating positioning block 223 are respectively extended with a convex portion 2231 (such as Figure 1 , Figure 5 As shown), the two protrusions 2231 are of equal height, and they form two floating support points for supporting the bottom surface of the fixing portion 71, which is beneficial for adjusting the height of the bottom surface of the fixing portion 71. In this embodiment, the pin shaft 224 is located on the symmetrical center line between the two protrusions 2231.

[0037] The limiting assembly 4 includes a first positioning seat 41 and a second positioning seat 42, the first positioning seat 41 and the second positioning seat 42 are installed on the mounting plate 1 by screws, and a receiving space is formed when the first positioning seat 41 and the second positioning seat 42 are connected. The first positioning seat 41 and the second positioning seat 42 are detachably connected to a limiting block 43 by screws at one end surface close to the centering and clamping assembly 5, respectively. The two limiting blocks 43 are respectively used to abut against the outer side wall 72 of the fixing portion 71. The limiting blocks 43 are detachably connected to facilitate replacement. When processing bearing caps 7 of different specifications, limiting blocks 43 of other specifications can be replaced, which simplifies the clamping process while expanding the applicable scope of the clamp.

[0038] like Figure 1 , Figure 5 As shown, the clamping mechanism 3 includes an end face clamping assembly 32 and a pressure plate 31 for pressing the top surface 74 of the bearing cover 7. The end face clamping assembly 32 is located between the first positioning seat 41 and the second positioning seat 42. The end face clamping assembly 32 is rotatably mounted on the mounting plate 1 through a connecting rod mechanism (unnumbered) to achieve clamping or loosening of the fixing portion 71. The pressure plate 31 is located above the centering clamping assembly 5 and is connected to the telescopic rod 61 of the cylinder.

[0039] Specifically, the end face clamping assembly 32 includes a rotating pressing plate 321 and a pressing part 322. The rotating pressing plate 321 and the pressing part 322 are located above the limiting assembly 4. The rear end (the end away from the centering clamping assembly 5) is connected to the telescopic rod 61 of the oil cylinder. The part between the front and rear ends is rotatably connected to the mounting plate 1 through a connecting rod mechanism. When the bearing cover 7 is to be clamped or loosened, the telescopic rod 61 of the oil cylinder performs telescopic movement, thereby driving the rotating pressing plate 321 to flip. The top surface 74 of the rotating pressing plate 321 is provided with an opening 3211 that passes through the rotating pressing plate 321. The opening 3211 provides a travel space for the CNC machine tool tool, which is conducive to processing the bearing cover 7. The pressing portion 322 is used to press the top surface 74 of the fixing portion 71. In the present embodiment, there are two pressing portions 322, which are respectively located at the left and right ends of the rotating pressure plate 321, and the two pressing portions 322 respectively correspond to the two convex portions 2231 to form two clamping points. When the bearing cover is clamped, the two clamping points press the bearing cover downward, and the top surface of the bearing cover is subjected to a downward clamping force, which tends to deform downward. At the same time, the two floating support points provide an upward support force to the bottom surface of the bearing cover 7, so that the bearing cover 7 is balanced in force, avoiding downward deformation due to the clamping effect and increasing the positioning stability. Since the floating positioning block 223 can be rotated up and down, the purpose of flexibly adjusting the unevenness of the support surface (bottom surface) of the bearing cover 7 is achieved, thereby further improving the positioning accuracy of the fixture.

[0040] The pressing portion 322 is detachably fixed to the front end of the rotating pressure plate 321 (one end close to the centering clamping assembly 5) by screws, and the portion where the pressing portion 322 abuts against the bearing cover 7 is spherical. The pressing portion 322 detachably fixes the front end of the rotating pressure plate 321 for easy replacement.

[0041] The centering clamping assembly 5 is arranged opposite to the limiting assembly 4. In this embodiment, the center lines of the centering clamping assembly 5 and the limiting assembly 4 along the width direction of the clamp coincide with each other. A clamping space 10 is formed between the centering clamping assembly 5 and the limiting assembly 4. The clamping space 10 is used to clamp the fixing portion 71 of the bearing cover 7. The limiting assembly 4 is used to abut against the outer wall 72 of the fixing portion 71, and the centering clamping assembly 5 is used to abut against the inner wall 73 of the fixing portion 71. Since the centering clamping assembly 5 extends into the interior of the bearing cover 7 to fix it, it does not occupy the tool travel space required for machining the machining surface of the bearing cover 7, that is, it provides a travel space for the machining tool of the CNC machine tool. When machining different machining surfaces of the bearing cover 7, only one clamping is required to complete the machining of the different machining surfaces of the bearing cover 7, which realizes convenient clamping and can expand the scope of use of the clamp, so that it can be applied to the machining of bearing covers 7 of other specifications, further improving the machining efficiency and reducing the production cost.

[0042] The centering and clamping assembly 5 is provided with an elastic device 51, and the elastic device 51 is used to resist the inner side wall 73 of the fixing portion 71; when the bearing cover 7 is installed in the clamping space 10, the elastic device 51 moves in the direction away from the limiting assembly 4 under the push of the bearing cover 7, so as to facilitate the installation of the bearing cover 7; when the bearing cover 7 is completely installed in the clamping space 10, the elastic device 51 moves in the direction close to the limiting assembly 4 under the action of elastic force, so that the elastic device 51 can gradually correct the position of the bearing cover 7 by its own elastic force. By providing the elastic device 51, not only can the bearing cover 7 be corrected by its own elastic force, so that the bearing cover 7 is accurately positioned, but also the bearing cover 7 can be smoothly installed in the fixture, thereby improving the clamping efficiency and accuracy.

[0043] In this embodiment, the centering and pressing assembly 5 is provided with a locking mechanism 52, which is connected to the telescopic rod 61 of the oil cylinder and abuts against the end (rear end) of the elastic device 51 away from the limiting assembly 4 (such as Figure 5 As shown in FIG. 1 ), the locking mechanism 52 pushes the elastic device 51 under the drive of the driving device 6, so that the centering and pressing assembly 5 is in a locked state (as shown in FIG. 1 ). Figure 7 As shown), further ensuring that the bearing cover 7 is firmly positioned.

[0044] like Figure 6 , Figure 7As shown, the centering and clamping assembly 5 further includes a centering base 54, which is mounted on the mounting plate 1 by screws; the elastic device 51 includes an elastic connector 511 and a centering block 512, the centering block 512 is adapted to the shape of the blank hole 70, for example, in an arc shape, the elastic connector 511 is mounted on the centering base 54, and one end of the elastic connector 511 is connected to the centering block 512, and the outer side wall 72 of the centering block 512 is used to abut against the inner side wall 73 of the fixing portion 71 to position it from the inside of the bearing cover 7. The two end surfaces of the centering block 512 along the length direction of the clamp respectively protrude with a correction portion 5121, and the side wall surface of the correction portion 5121 is used to abut against the inner side wall 73 of the fixing portion 71, and the two correction portions 5121 form two correction points, which are convenient for correcting the position of the bearing cover 7 in the length direction of the clamp, so that its position is easy to center. In this embodiment, the side wall surface of the correction portion 5121 is a curved surface.

[0045] like Figure 5 As shown, the locking mechanism 52 includes a centering clamping plate 55 and a push piece 56. The bottom end of the centering clamping plate 55 is connected to the telescopic rod 61 of the oil cylinder through a pin shaft 224, and the top end is fixedly connected to the push piece 56 by screws or pins. The centering clamping plate 55 rotates under the drive of the oil cylinder and drives the push piece 56 to rotate, so that the push piece 56 pushes the centering block 512 (as shown in FIG. Figure 5 As shown), the elastic device 51 is locked to further ensure that the bearing cover 7 is firmly positioned.

[0046] like Figure 6 , Figure 7 As shown, the elastic connecting member 511 includes a shaft and a spring 5123. The shaft is movably connected to the centering base 54. An end face (front end face) of the shaft away from the centering block 512 is provided with a groove 5124. The spring 5123 is installed in the groove 5124. The shaft 5122 is fixedly connected to the centering block 512 by screws.

[0047] like Figure 1 , Figure 2 As shown, a slot 311 is provided on one end face (rear end face) of the pressure plate 31 close to the telescopic rod 61. When the bearing cover 7 needs to be compressed, the telescopic rod 61 is extended. At this time, the pressure plate 31 is manually engaged with the telescopic rod 61 through the slot 311, and when it is expanded and contracted, the pressure plate 31 is driven to move downward to compress the bearing cover 7. The installation method of the pressure plate 31 is simple, and the bearing cover 7 can be quickly compressed, saving clamping time.

[0048] When the bearing cover 7 is loaded into the clamp for fixing, the rotating pressure plate 321 is first opened by the driving device 6, and then the bearing cover 7 is sleeved on the centering block 512. During the sleeve installation process, the bearing cover 7 squeezes the centering block 512, so that the centering block 512 moves in the direction away from the limit block 43 (backward). When the bearing cover 7 is completely loaded into the clamping space 10, the bearing cover 7 is released. At this time, the bearing cover 7 moves forward under the action of elastic force, thereby gradually straightening the bearing cover 7. Then, the locking mechanism 52 is driven to rotate by the driving device 6, and the rotating locking mechanism 52 pushes the centering block 512 backward to lock the centering block 512. Then, the pressure plate 31 is engaged with the extended telescopic rod 61. Finally, the telescopic rod 61 is driven to contract by the driving device 6, so that the pressure plate 31 moves downward with the telescopic rod 61 to press the bearing cover 7. At this time, the clamping process is completed.

[0049] The centering and clamping assembly of the bearing cover fixing device of the present invention can extend into the interior of the bearing cover and form a clamping space for clamping the fixing part of the bearing cover with the limiting assembly. The limiting assembly is used to abut against the outer wall of the fixing part, and the centering and clamping assembly is used to abut against the inner wall of the fixing part to clamp the bearing cover, that is, the centering and clamping assembly and the limiting assembly clamp the bearing cover from the inside and outside directions respectively. Since the centering and clamping assembly extends into the interior of the bearing cover to fix it, it does not occupy the space of the external processing surface of the bearing cover, that is, it provides travel space for the processing tool of the CNC machine tool. When processing different processing surfaces of the bearing cover, only one clamping is needed to complete the processing of the different processing surfaces of the bearing cover, thereby realizing convenient clamping, further improving processing efficiency and reducing production costs.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bearing cover fixing device, used for fixing a bearing cover, characterized in that: The invention comprises at least one clamp, which comprises a mounting plate, a supporting device, a clamping mechanism, a limiting assembly and a centering clamping assembly which can extend into the interior of the bearing cover, wherein the supporting device, the clamping mechanism, the limiting assembly and the centering clamping assembly are all mounted on the mounting plate; the centering clamping assembly and the limiting assembly are arranged opposite to each other, and a clamping space is formed between the centering clamping assembly and the limiting assembly, wherein the clamping space is used to clamp the fixing part of the bearing cover, the limiting assembly is used to abut against the outer side wall of the fixing part, and the centering clamping assembly is used to abut against the inner side wall of the fixing part; the bearing cover fixing device also comprises a driving device, wherein the driving device The device is installed on the mounting plate; the centering and clamping assembly is provided with an elastic device and a locking mechanism, the elastic device is used to abut against the inner side wall of the fixing portion, the locking mechanism is connected to the driving device and abuts against one end of the elastic device away from the limiting assembly, and the locking mechanism pushes the elastic device under the drive of the driving device so that the centering and clamping assembly is in a locked state; the centering and clamping assembly also includes a centering base, which is installed on the mounting plate; the elastic device includes an elastic connector and a centering block, the elastic connector is installed on the centering base, and one end of the elastic connector is abutted against the centering block The support device comprises two positioning studs with adjustable height and a floating support mechanism, the two positioning studs are used to support the bottom of the pressing part of the bearing cover, the floating support mechanism is arranged corresponding to the pressing mechanism, and is used to support the bottom of the fixed part, and the floating support mechanism can be rotated relative to the horizontal direction to adjust the horizontal position of the bearing cover; the pressing mechanism comprises an end face pressing assembly, the end face pressing assembly can be rotatably mounted on the mounting plate, the end face pressing assembly comprises a pressing part, the pressing part has two, and the two pressing parts are respectively located at The two ends of the end face clamping assembly are used to press the top surface of the fixed part; the floating support mechanism includes a floating positioning block and a support, and the two ends of the top surface of the floating positioning block respectively extend with a convex portion along the length direction of the clamp, and the two convex portions respectively correspond to the two pressing portions, and the convex portions are used to support the bottom surface of the fixed part; the limiting assembly includes a first positioning seat and a second positioning seat, the first positioning seat and the second positioning seat are installed on the mounting plate, and the first positioning seat and the second positioning seat are respectively detachably connected with a limit block on one end face close to the centering and clamping assembly, and the two limit blocks are respectively used to resist the outer side wall of the fixed part.

2. The bearing cap fixing device according to claim 1, characterized in that: A correction portion is protruded from both end surfaces of the centering block along the length direction of the clamp, and the correction portion is used to abut against the inner side wall of the fixing portion.

3. The bearing cap fixing device according to claim 1, characterized in that: The locking mechanism includes a centering pressure plate and a push piece. The bottom end of the centering pressure plate is connected to the driving device, and the top end is fixedly connected to the push piece. The centering pressure plate rotates under the drive of the driving device and drives the push piece to rotate, so that the push piece pushes the centering block.

4. The bearing cap fixing device according to claim 1, characterized in that: The elastic connecting member includes a shaft and a spring. The shaft is movably connected to the centering base. A groove is provided at one end of the shaft away from the centering block. The spring is installed in the groove. The shaft is fixedly connected to the centering block by screws.

5. The bearing cap fixing device according to claim 1, characterized in that: The driving device is provided with a telescopic rod that can be extended into the interior of the bearing cover; the clamping mechanism includes a pressure plate for pressing the top surface of the bearing cover, the pressure plate is located above the centering clamping assembly, and a slot is provided on one end surface of the pressure plate close to the telescopic rod, and the slot is engaged with the telescopic rod.

6. The bearing cap fixing device according to claim 1, characterized in that: The support is installed on the mounting plate, and a mounting groove penetrating the opposite side walls of the support is opened on the top surface of the support along the length direction of the clamp. The floating positioning block is rotatably installed in the mounting groove through a pin shaft, and the pin shaft is located between the two protrusions.

7. The bearing cap fixing device according to claim 1, characterized in that: The end face clamping assembly includes a rotating pressure plate and a pressing portion, wherein the rotating pressure plate and the pressing portion are located above the limiting assembly, and an opening penetrating the rotating pressure plate is provided on the top surface of the rotating pressure plate, and the pressing portion is used to press the top surface of the fixing portion.

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