Eccentric bearing seat machining clamping device

Abstract

An eccentric bearing seat machining clamping device comprises a bearing plate and a clamping part, the bearing plate comprises a bottom plate, a first side plate and a second side plate, and the clamping part comprises a left clamping part and a right clamping part; the left clamping part comprises a mounting plate, a mounting frame and a clamping block, the mounting plate is connected with the first side plate through a first telescopic rotating shaft, and a semicircular groove is formed in the end of the clamping block; the right clamping part comprises a mounting box, a threaded rod, a first clamping plate and a second clamping plate, and the mounting box is connected with the second side plate through a second telescopic rotating shaft; the threaded rod is arranged in the mounting box, and the first clamping plate and the second clamping plate are respectively in threaded connection with the threaded rod in opposite directions; in application, the two special-shaped ends of the eccentric bearing are clamped and limited through the semicircular groove, the first clamping plate and the second clamping plate, the first telescopic rotating shaft and the second telescopic rotating shaft stretch out and draw back and rotate, the left clamping part and the right clamping part clamp the eccentric bearing and turn over the eccentric bearing, the two end faces can be machined conveniently, repeated disassembly is not needed, and the complexity degree of operation is reduced. Therefore, the utility model is more convenient to operate.

Description

Technical Field

[0001] The utility model relates to clamping, belongs to the technical field of bearing seats, and particularly relates to a processing clamping device for an eccentric bearing seat. Background Art

[0002] During the processing of the bearing seat, a clamping tool is needed to clamp and fix the bearing seat, which can avoid the bearing seat from shifting during the processing, thereby facilitating the operator to process the bearing seat; during the processing, both end faces of the bearing seat need to be processed. The existing clamping tool for eccentric bearing seats usually directly installs the bearing seat on the top of the processing table during use, and clamps and fixes the eccentric bearing seat by driving the clamping components on both sides. Then the operator processes the top of the bearing seat. However, when the other side needs to be processed, the bearing seat needs to be removed from the clamping tool, turned over and re-clamped and fixed, and the additional adjustment operation is added, which greatly increases the complexity of the operation and reduces the processing efficiency.

[0003] The patent application document with application number 202122153499.8 and application date September 7, 2021 discloses a clamping device for motor bearing production, which includes a workbench and a clamping mechanism. The clamping mechanism includes an arc-shaped clamping block, a hydraulic telescopic rod, and a placement table. The arc-shaped clamping block is threadedly connected to one end of the hydraulic telescopic rod, and the top of the placement table is on the inner side of the arc-shaped clamping block. The placement table is on the top surface of the workbench. The arc-shaped clamping block, the hydraulic telescopic rod, and the placement table play a role in clamping and stabilizing the periphery of the bearing; although the device can clamp bearings, its structure is only applicable to circular bearing parts and cannot be applied to eccentric bearings. It can only clamp and cannot be flipped without disassembly, and it is still inconvenient to use. Therefore, there is an urgent need for an eccentric bearing clamping device that is easy to operate to solve the above-mentioned defects in the prior art. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects and problems of complicated operation in the prior art and to provide an eccentric bearing seat processing clamping device that is easy to operate.

[0005] To achieve the above objectives, the technical solution of the present utility model is: an eccentric bearing seat processing clamping device, the device includes a bearing plate and a clamping component;

[0006] The supporting plate includes a bottom plate, a first side plate and a second side plate, wherein the first side plate and the second side plate are respectively arranged at two ends of the bottom plate;

[0007] The clamping component includes a left clamping portion and a right clamping portion; the left clamping portion includes a mounting plate, a mounting frame and a clamping block; one side of the mounting plate is connected to the first side plate via a first telescopic rotation axis, and the other side of the mounting plate is connected to the mounting frame; the mounting frame is provided with a mounting slot, and one end of the clamping block is slidably engaged in the mounting slot; the other end of the clamping block is provided with a semicircular groove;

[0008] The right clamping part includes a mounting box, a threaded rod, a first clamping plate, and a second clamping plate; one side of the mounting box is connected to the second side plate through a second telescopic rotating shaft; the threaded rod is coaxially arranged inside the mounting box, and the first clamping plate and the second clamping plate are both located on the other side of the mounting box, the first clamping plate is threadedly connected to the threaded rod in a forward direction, and the second clamping plate is threadedly connected to the threaded rod in a reverse direction.

[0009] The mounting plate is provided with a plurality of adjusting bolts, which extend from one end of the mounting plate into the mounting slot and abut against the clamping block;

[0010] The mounting plate is provided with a plurality of connection blocks, which are respectively arranged at both ends of the mounting plate; one end of the connection block is connected to the mounting plate, and the other end is connected to the mounting frame.

[0011] Rectangular limiting grooves are respectively provided on both sides of the installation through groove, and rectangular convex strips are respectively provided on both sides of the clamping block, and the rectangular convex strips are slidably engaged in the rectangular limiting grooves.

[0012] One end of the threaded rod extends to the outside of the side of the installation box, and a crank is provided on the end thereof;

[0013] The threaded rod is provided with a first driving block and a second driving block, the first driving block is connected to the threaded rod in a forward threaded manner, and the second driving block is connected to the threaded rod in a reverse threaded manner.

[0014] A strip window is provided on one side of the installation box facing the installation plate, one end of the first clamping plate passes through the strip window and is connected to the first driving block, and one end of the second clamping plate passes through the strip window and is connected to the second driving block.

[0015] Both ends of the mounting plate are provided with connecting plates, one end of the connecting plate is connected to the mounting plate, and the other end is connected to the mounting box.

[0016] A limit assembly is provided on the bottom plate; the limit assembly comprises a limit plate, a cylindrical limit block and a telescopic rod;

[0017] The limiting plate is located below the clamping component, and the cylindrical limiting block is arranged on the top surface of the limiting plate, which is located at the axis center of the semicircular groove; the bottom surface of the limiting plate is connected to the telescopic rod.

[0018] A hydraulic cylinder is provided on the bottom surface of the base plate, and the hydraulic cylinder is connected to the telescopic rod.

[0019] A servo motor is provided on the outer side of the first side plate, and the servo motor is connected to the first telescopic rotating shaft.

[0020] A support base is provided below the base plate, and the support base is fixedly connected to the base plate through a plurality of support columns.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The utility model provides an eccentric bearing seat processing clamping device, comprising a bearing plate and a clamping component, the bearing plate comprising a bottom plate and first and second side plates, the clamping component comprising left and right clamping parts; the left clamping part comprises a mounting plate, a mounting frame and a clamping block, one side of the mounting plate is connected to the first side plate through a first telescopic rotating shaft, the clamping block is slidably engaged in the mounting groove, and a semicircular groove is provided at the end thereof; the right clamping part comprises a mounting box, a threaded rod and the first and second clamping plates, one side of the mounting box is connected to the second side plate through a second telescopic rotating shaft; the threaded rod is coaxial The first and second clamping plates are respectively threadedly connected to the threaded rod in the installation box, and the threaded connection directions of the first and second clamping plates are opposite to each other. In use, the semicircular groove of the left clamping part and the first and second clamping plates of the right clamping part are used to clamp and limit the eccentric bearing with special-shaped ends. Then, the left and right clamping parts drive the eccentric bearing to flip by the extension and rotation of the first and second telescopic rotating shafts, thereby facilitating the processing of the two end surfaces of the eccentric bearing without the need for repeated disassembly, greatly reducing the complexity of the operation during the processing. Therefore, the operation of the utility model is relatively convenient.

[0023] 2. In the present invention, a device for processing and clamping an eccentric bearing seat comprises rectangular limiting grooves on both sides of a mounting slot, rectangular ridges on both sides of a clamping block, which slide and engage in the limiting grooves, a crank handle at one end of a threaded rod, and first and second drive blocks on the threaded rod, which are connected to first and second clamping plates, respectively. In use, the clamping blocks are designed to be removable and replaceable. By replacing clamping blocks of different sizes, the arc ends of eccentric bearings of different sizes can be limited. The first and second clamping plates, through the arrangement of opposite threads, achieve opposite movement, allowing them to clamp rectangular seats of eccentric bearings of different sizes. Therefore, the present invention has good applicability.

[0024] 3. In the present invention, a clamping device for machining an eccentric bearing seat is provided with a limit assembly on a base plate, which includes a limit plate, a cylindrical limit block, and a telescopic rod. The limit plate is located below the clamping component, and the cylindrical limit block is provided on the top surface of the limit plate, located at the axis of the semicircular groove. The bottom surface of the limit plate is connected to the telescopic rod. In use, the limit assembly provides support for the eccentric bearing, preventing the eccentric bearing from moving downward during machining, thereby affecting machining quality. The cylindrical limit block further limits the eccentric bearing, improving the stability of the clamping fastening. In addition, the extension and retraction of the telescopic rod drives the limit assembly to move up and down, without affecting the flipping function of the clamping device. Therefore, the present invention has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the present utility model.

[0026] Figure 2 It is a structural schematic diagram of the clamping component of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the load-bearing plate and the limiting assembly of the utility model.

[0028] Figure 4 It is a structural schematic diagram of the left clamping part of the utility model.

[0029] Figure 5 It is a structural schematic diagram of the right clamping part of the utility model.

[0030] Figure 6 It is a schematic diagram of the clamping application of the present utility model.

[0031] In the figure: the bearing plate 1, the bottom plate 11, the first side plate 12, the second side plate 13, the clamping component 2, the left clamping part 21, the mounting plate 211, the mounting frame 212, the clamping block 213, the first telescopic rotating shaft 214, the mounting through groove 215, the semicircular groove 216, the adjusting bolt 217, the connecting block 218, the rectangular limiting groove 219, the rectangular convex strip 210, the right clamping part 22, the mounting box 221, the threaded rod 222, the first clamping plate 223, the second clamping plate 224, the second telescopic rotating shaft 225, the crank 226, the first driving block 227, the second driving block 228, the strip window 229, the connecting plate 23, the limiting assembly 3, the limiting plate 31, the cylindrical limiting block 32, the telescopic rod 33, the hydraulic cylinder 4, the servo motor 5, the support seat 6, and the support column 61. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0033] An eccentric bearing seat machining clamping device, the device comprising a bearing plate 1 and a clamping component 2;

[0034] The carrier plate 1 includes a bottom plate 11, a first side plate 12 and a second side plate 13, wherein the first side plate 12 and the second side plate 13 are respectively arranged at two ends of the bottom plate 11;

[0035] The clamping component 2 includes a left clamping portion 21 and a right clamping portion 22; the left clamping portion 21 includes a mounting plate 211, a mounting frame 212, and a clamping block 213; one side of the mounting plate 211 is connected to the first side plate 12 via a first telescopic rotation shaft 214, and the other side of the mounting plate 211 is connected to the mounting frame 212. The mounting frame 212 is provided with a mounting groove 215, and one end of the clamping block 213 is slidably engaged in the mounting groove 215; the other end of the clamping block 213 is provided with a semicircular groove 216;

[0036] The right clamping part 22 includes a mounting box 221, a threaded rod 222, a first clamping plate 223, and a second clamping plate 224; one side of the mounting box 221 is connected to the second side plate 13 through a second telescopic rotating shaft 225; the threaded rod 222 is coaxially arranged inside the mounting box 221, and the first clamping plate 223 and the second clamping plate 224 are both located on the other side of the mounting box 221, the first clamping plate 223 is threadedly connected to the threaded rod 222 in a forward direction, and the second clamping plate 224 is threadedly connected to the threaded rod 222 in a reverse direction.

[0037] The mounting plate 211 is provided with a plurality of adjustment bolts 217 , which extend from one end of the mounting plate 211 into the mounting slot 215 and abut against the clamping block 213 ;

[0038] The mounting plate 211 is provided with a plurality of connection blocks 218 , which are respectively provided at both ends of the mounting plate 211 ; one end of the connection block 218 is connected to the mounting plate 211 , and the other end is connected to the mounting frame 212 .

[0039] Rectangular limiting grooves 219 are respectively formed on both sides of the installation through groove 215 , and rectangular convex strips 210 are respectively provided on both sides of the clamping block 213 . The rectangular convex strips 210 are slidably engaged in the rectangular limiting grooves 219 .

[0040] One end of the threaded rod 222 extends to the outside of the side of the installation box 221, and a crank 226 is provided on the end thereof;

[0041] The threaded rod 222 is provided with a first driving block 227 and a second driving block 228 . The first driving block 227 is connected to the threaded rod 222 in a forward threaded manner, and the second driving block 228 is connected to the threaded rod 222 in a reverse threaded manner.

[0042] A strip window 229 is provided on the side of the installation box 221 facing the installation plate 211. One end of the first clamping plate 223 passes through the strip window 229 and is connected to the first driving block 227. One end of the second clamping plate 224 passes through the strip window 229 and is connected to the second driving block 228.

[0043] Connecting plates 23 are provided at both ends of the mounting plate 211 . One end of the connecting plate 23 is connected to the mounting plate 211 , and the other end is connected to the mounting box 221 .

[0044] The bottom plate 11 is provided with a limit assembly 3; the limit assembly 3 includes a limit plate 31, a cylindrical limit block 32 and a telescopic rod 33;

[0045] The limiting plate 31 is located below the clamping component 2 , and the cylindrical limiting block 32 is provided on the top surface of the limiting plate 31 , which is located at the axis of the semicircular groove 216 ; the bottom surface of the limiting plate 31 is connected to the telescopic rod 33 .

[0046] A hydraulic cylinder 4 is provided on the bottom surface of the base plate 11 , and the hydraulic cylinder 4 is connected to the telescopic rod 33 .

[0047] A servo motor 5 is disposed on the outer side of the first side plate 12 , and the servo motor 5 is connected to the first telescopic rotating shaft 214 .

[0048] A support base 6 is provided below the bottom plate 11 , and the support base 6 is fixedly connected to the bottom plate 11 via a plurality of support columns 61 .

[0049] Example 1:

[0050] See also Figures 1-6, a processing clamping device for an eccentric bearing seat, the device includes a carrying plate 1 and a clamping component 2; the carrying plate 1 includes a bottom plate 11, a first side plate 12 and a second side plate 13, the first side plate 12 and the second side plate 13 are respectively arranged at both ends of the bottom plate 11; the clamping component 2 includes a left clamping portion 21 and a right clamping portion 22; the left clamping portion 21 includes a mounting plate 211, a mounting frame 212 and a clamping block 213; one side of the mounting plate 211 is connected to the first side plate 12 through a first telescopic rotating shaft 214, and the other side of the mounting plate 211 is connected to the mounting frame 212, and a mounting through slot 215 is opened on the mounting frame 212, and the clamping block One end of 213 is slidably engaged in the mounting groove 215; the other end of the clamping block 213 is provided with a semicircular groove 216; the right clamping part 22 includes a mounting box 221, a threaded rod 222, a first clamping plate 223, and a second clamping plate 224; one side of the mounting box 221 is connected to the second side plate 13 through a second telescopic rotating shaft 225; the threaded rod 222 is coaxially arranged inside the mounting box 221, and the first clamping plate 223 and the second clamping plate 224 are both located on the other side of the mounting box 221, the first clamping plate 223 is threadedly connected to the threaded rod 222 in a forward direction, and the second clamping plate 224 is threadedly connected to the threaded rod 222 in a reverse direction.

[0051] In application, since the eccentric bearing is an irregular bearing with one end being an arc shape and the other end being a rectangular seat, conventional clamping devices cannot clamp the special-shaped ends well. When using this device, first place the arc-shaped end of the eccentric bearing in the semicircular groove 216 of the left clamping part 21, and place the rectangular seat of the eccentric bearing between the first clamping plate 223 and the second clamping plate 224. Then, rotate the threaded rod 222 to make the first clamping plate 223 and the second clamping plate 224 move along the threaded rod and approach each other, so that the rectangular seat can be clamped. Then, by telescoping the first telescopic rotating shaft 214 and the second telescopic rotating shaft 225, the left clamping part 21 and the right clamping part 22 are brought close to each other, so that the special-shaped ends of the eccentric bearing can be effectively clamped and fixed. When flipping processing is required, the first telescopic rotating shaft 214 and the second telescopic rotating shaft 225 are rotated at the same time to achieve the purpose of flipping the eccentric bearing without disassembling the clamping tooling.

[0052] Example 2:

[0053] The basic content is the same as Example 1, except that:

[0054] See also Figure 4The mounting plate 211 is provided with a plurality of adjustment bolts 217, which extend from one end of the mounting plate 211 into the mounting slot 215 and abut against the clamping block 213. The mounting plate 211 is provided with a plurality of connecting blocks 218, which are respectively provided at both ends of the mounting plate 211. One end of each connecting block 218 is connected to the mounting plate 211, and the other end is connected to the mounting frame 212. Rectangular limiting grooves 219 are respectively formed on both sides of the mounting slot 215, and rectangular protrusions 210 are respectively provided on both sides of the clamping block 213. Each rectangular protrusion 210 is slidably engaged in the rectangular limiting grooves 219.

[0055] In application, in order to improve the applicability of this device, the clamping block 213 is designed to be detachable and replaceable. By replacing the clamping block 213 with a semicircular groove 216 of different diameters, it can be suitable for eccentric bearings of different sizes, and the sliding engagement of the rectangular protrusion 210 and the rectangular limiting groove 219 can achieve limitation in other directions, but it does not affect the forward and backward movement of the clamping block 213. This design is further to adjust the degree of contact between the several adjustment bolts 217 on the rotating mounting plate 211 and the clamping block 213, so as to achieve fine adjustment of the clamping and tightening force.

[0056] Example 3:

[0057] The basic content is the same as Example 1, except that:

[0058] See also Figure 5 One end of the threaded rod 222 extends to the outside of the side of the mounting box 221, and a crank 226 is provided on its end. A first driving block 227 and a second driving block 228 are provided on the threaded rod 222. The first driving block 227 is threadedly connected to the threaded rod 222 in a forward direction, and the second driving block 228 is threadedly connected to the threaded rod 222 in a reverse direction. A strip-shaped window 229 is provided on the side of the mounting box 221 facing the mounting plate 211. One end of the first clamping plate 223 extends through the strip-shaped window 229 and is connected to the first driving block 227. One end of the second clamping plate 224 extends through the strip-shaped window 229 and is connected to the second driving block 228.

[0059] In application, both the first driving block 227 and the second driving block 228 are provided with threaded holes, but the threaded holes of the two are opposite. In this way, when the threaded rod 222 is rotated, the first driving block 227 and the second driving block 228 can be driven to move in opposite directions, thereby realizing the approach or distance of the first clamping plate 223 and the second clamping plate 224, achieving the purpose of clamping or releasing the clamping, and this design can adapt to the length of the rectangular seat without replacing different clamping parts.

[0060] Example 4:

[0061] The basic content is the same as Example 1, except that:

[0062] See also Figure 3 The bottom plate 11 is provided with a limit assembly 3, which includes a limit plate 31, a cylindrical limit block 32, and a telescopic rod 33. The limit plate 31 is located below the clamping component 2, and the cylindrical limit block 32 is provided on the top surface of the limit plate 31, located at the axis of the semicircular groove 216. The bottom surface of the limit plate 31 is connected to the telescopic rod 33. The bottom surface of the bottom plate 11 is provided with a hydraulic cylinder 4, which is connected to the telescopic rod 33.

[0063] In application, although the clamping component 2 can already provide good clamping force, downward pressure will be further generated when processing the end face. Therefore, a limit assembly 3 is designed in this solution to support and further limit the eccentric bearing; during operation, the bearing hole of the eccentric bearing is clamped on the cylindrical limit block 32, and the telescopic rod 33 is driven up by the hydraulic cylinder 4 to adjust the eccentric bearing to the level with the clamping component 2, completing the support and limitation of the eccentric bearing; when flipping is required, the telescopic rod 33 is driven down by the hydraulic cylinder 4 to pull the cylindrical limit block 32 out of the bearing hole, which will not affect the realization of its flipping function. After the flipping is completed, it rises again to continue subsequent processing.

[0064] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and cannot be interpreted as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An eccentric bearing seat processing clamping device, characterized by: The device comprises a carrying plate (1) and a clamping component (2); The bearing plate (1) comprises a bottom plate (11), a first side plate (12) and a second side plate (13), wherein the first side plate (12) and the second side plate (13) are respectively arranged at two ends of the bottom plate (11); The clamping component (2) includes a left clamping portion (21) and a right clamping portion (22); the left clamping portion (21) includes a mounting plate (211), a mounting frame (212) and a clamping block (213); one side of the mounting plate (211) is connected to the first side plate (12) via a first telescopic rotation shaft (214), and the other side of the mounting plate (211) is connected to the mounting frame (212); a mounting through groove (215) is provided on the mounting frame (212), and one end of the clamping block (213) is slidably engaged in the mounting through groove (215); the other end of the clamping block (213) is provided with a semicircular groove (216); The right clamping portion (22) comprises a mounting box (221), a threaded rod (222), a first clamping plate (223), and a second clamping plate (224); one side of the mounting box (221) is connected to the second side plate (13) via a second telescopic rotation shaft (225); the threaded rod (222) is coaxially arranged inside the mounting box (221), the first clamping plate (223) and the second clamping plate (224) are both located on the other side of the mounting box (221), the first clamping plate (223) is threadedly connected to the threaded rod (222) in a forward direction, and the second clamping plate (224) is threadedly connected to the threaded rod (222) in a reverse direction.

2. The eccentric bearing seat processing and clamping device according to claim 1, characterized in that: A plurality of adjustment bolts (217) are provided on the mounting plate (211), and the plurality of adjustment bolts (217) extend from one end of the mounting plate (211) into the mounting slot (215) and abut against the clamping block (213); A plurality of connection blocks (218) are provided on the mounting plate (211), and the connection blocks (218) are respectively provided at both ends of the mounting plate (211); one end of the connection block (218) is connected to the mounting plate (211), and the other end is connected to the mounting frame (212).

3. The eccentric bearing seat processing and clamping device according to claim 2, characterized in that: Rectangular limiting grooves (219) are respectively provided on both sides of the installation through groove (215), and rectangular convex strips (210) are respectively provided on both sides of the clamping block (213), and the rectangular convex strips (210) are slidably engaged in the rectangular limiting grooves (219).

4. The eccentric bearing seat processing and clamping device according to claim 1, characterized in that: One end of the threaded rod (222) extends to the outside of the side of the installation box (221), and a crank (226) is provided on the end thereof; A first driving block (227) and a second driving block (228) are provided on the threaded rod (222); the first driving block (227) is connected to the threaded rod (222) in a forward threaded manner, and the second driving block (228) is connected to the threaded rod (222) in a reverse threaded manner.

5. The eccentric bearing seat processing and clamping device according to claim 4, characterized in that: A strip-shaped window (229) is provided on one side of the mounting box (221) facing the mounting plate (211); one end of the first clamping plate (223) passes through the strip-shaped window (229) and is connected to the first driving block (227); and one end of the second clamping plate (224) passes through the strip-shaped window (229) and is connected to the second driving block (228).

6. The eccentric bearing seat processing and clamping device according to any one of claims 1 to 5, characterized in that: Connecting plates (23) are provided at both ends of the mounting plate (211), one end of the connecting plate (23) is connected to the mounting plate (211), and the other end is connected to the mounting box (221).

7. The eccentric bearing seat processing and clamping device according to any one of claims 1 to 5, characterized in that: A limiting assembly (3) is provided on the bottom plate (11); the limiting assembly (3) comprises a limiting plate (31), a cylindrical limiting block (32) and a telescopic rod (33); The limiting plate (31) is located below the clamping component (2), and the cylindrical limiting block (32) is arranged on the top surface of the limiting plate (31) and is located at the axis of the semicircular groove (216); the bottom surface of the limiting plate (31) is connected to the telescopic rod (33).

8. The eccentric bearing seat processing and clamping device according to claim 7, characterized in that: A hydraulic cylinder (4) is provided on the bottom surface of the base plate (11), and the hydraulic cylinder (4) is connected to the telescopic rod (33).

9. The eccentric bearing seat processing and clamping device according to any one of claims 1 to 5, characterized in that: A servo motor (5) is provided on the outer side of the first side plate (12), and the servo motor (5) is connected to the first telescopic rotating shaft (214).

10. The eccentric bearing seat processing and clamping device according to any one of claims 1 to 5, characterized in that: A support base (6) is provided below the base plate (11), and the support base (6) is fixedly connected to the base plate (11) via a plurality of support columns (61).

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