Rapid take-up equipment for tire bead steel wire

Abstract

The invention provides tire bead steel wire rapid take-up equipment which comprises a main support, an adapter is arranged at the top of the main support, a rotating disc is rotationally connected to the bottom of the adapter, a first electric control telescopic part is arranged on the rotating disc, and a telescopic rod part of the first electric control telescopic part vertically extends downwards; the bottom end of a telescopic rod of the first electric control telescopic piece is connected with a wire assembly. By controlling the motor to work, the driving gear is in meshing transmission with the outer gear arranged on the outer ring of the rotating disc to drive the rotating disc to rotate, so that the wire guide assembly connected to the bottom end of the telescopic rod of the first electric control telescopic piece is controlled to rotate along the outer ring of the wire winding roller, and the first electric control telescopic piece is combined to control the wire guide assembly to ascend and descend; compared with a traditional roller driving winding mode, the winding mode has the advantages that the step of detaching and replacing the rollers is omitted, and the winding speed is greatly increased.

Description

Technical Field

[0001] The invention relates to the technical field of tire bead wire production, and in particular to a tire bead wire rapid wire collection device. Background Art

[0002] The production process of bead wire mainly includes wire drawing, die repair technology, heat treatment normalizing, quenching, pickling and phosphating, wire production, wire core processing, wooden wheel manufacturing, wire packaging, etc. When packaging bead wire, the straight wire needs to be bent and rolled.

[0003] For example, application number CN202321493282.4 discloses a wire drawing and collecting device, which drives a rotating seat on a support frame to rotate through a motor, drives a rotating shaft, and rotates a wire collecting roller through a turntable, a latch and a mounting plate to collect wires for wire drawing. The motor drives a rotating seat on a support frame to rotate through a motor, drives a rotating shaft, and rotates a wire collecting roller through a turntable, a latch and a mounting plate to collect wires for wire drawing. The device requires the entire device to be shut down for a long time during the replacement of the wire collecting roller, thereby affecting production efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a tire bead wire rapid wire collection device to more accurately solve the above problems.

[0005] The present invention is achieved through the following technical solutions: The invention provides a tire bead wire rapid wire collecting device, comprising a main bracket, a transfer seat is provided on the top of the main bracket, and a rotating disk is rotatably connected to the bottom of the transfer seat, and a first electrically-controlled telescopic member is provided on the rotating disk, the telescopic rod portion of the first electrically-controlled telescopic member extends vertically downward, and the bottom end of the telescopic rod of the first electrically-controlled telescopic member is connected to a wire assembly, and the wire assembly comprises an upper transfer base connected to the bottom end of the telescopic rod of the first electrically-controlled telescopic member, an upper wire head is connected to the bottom of the upper transfer base, a wire main drum is connected to the bottom of the upper wire head, and a lower wire head is connected to the bottom of the wire main drum. A conveying device is provided at the bottom of the rotating disk, a transmission belt is provided on the conveying device, and a plurality of groups of winding roller fixing assemblies for fixing a winding roller are provided on the conveyor belt of the conveying device, the axial direction of the winding roller is vertically arranged, and the winding roller and the rotating disk are coaxially arranged, a second electrically-controlled telescopic member is provided on the top frame, the telescopic rod portion of the second electrically-controlled telescopic member extends vertically downward, and a side wire head is connected to the bottom of the telescopic rod of the second electrically-controlled telescopic member

[0006] Furthermore, a top frame is provided on the top of the main bracket, a motor is provided on the top frame, an output shaft of the motor is connected to a driving gear, an outer gear is provided on the outer ring of the rotating disk, and the driving gear is meshed with the outer ring gear of the rotating disk.

[0007] Furthermore, the conductor main cylinder is a hollow tube body, and the lower conductor head includes a first adapter sleeve rotatably connected to the conductor main cylinder, a first lower guide wheel seat is provided at the bottom of the first adapter sleeve, and a pair of first lower guide wheels for vertically guiding the steel wire are provided in the first lower guide wheel seat, a second lower guide wheel seat is integrally formed at the bottom end of the first lower guide wheel seat, and a pair of second lower guide wheels for horizontally guiding the steel wire are provided on the second lower guide wheel seat.

[0008] Furthermore, the upper conductor head includes a second adapter sleeve rotatably connected to the top of the conductor main barrel, the top of the second adapter sleeve is connected to the first upper guide wheel seat, the first upper guide wheel seat is provided with a pair of first upper guide wheels for vertically guiding the steel wire, a second upper guide wheel seat is integrally formed with one side of the first upper guide wheel seat, and the second upper guide wheel seat is provided with a pair of second upper guide wheels for horizontally guiding the steel wire, the top of the first upper guide wheel seat is integrally formed with an upper adapter, and the upper adapter is rotatably connected to the bottom of the upper adapter base.

[0009] Furthermore, the side conductor head includes a first side guide wheel seat connected to the telescopic rod end of the second electrically-controlled telescopic member, the first side guide wheel seat is provided with a pair of first side guide wheels for guiding the steel wire up and down deflection, a second side guide wheel seat is integrally formed with a side of the first side guide wheel seat close to the conductor assembly, and the second side guide wheel seat is provided with a pair of second side guide wheels for horizontally guiding the steel wire.

[0010] Furthermore, a third electrically-controlled telescopic component is provided on the top frame and located outside the second electrically-controlled telescopic component, the telescopic rod end of the third electrically-controlled telescopic component extends vertically downward, the telescopic rod end of the third electrically-controlled telescopic component is connected to an elastic telescopic rod component, the bottom end of the elastic telescopic rod component is connected to a tensioning wire component, the tensioning wire component includes a tension wheel seat fixed to the bottom end of the elastic telescopic rod component, and a pair of tension wheels for guiding the up and down deflection of the steel wire are provided in the tension wheel seat.

[0011] Furthermore, the winding roller fixing assembly includes a fixing base, on which a pair of shaft rod brackets are integrally formed, a sliding shaft and a screw rod arranged in parallel are connected between the pair of shaft rod brackets, a pair of clamping blocks are connected to the sliding shaft and the screw rod, and a clamping groove is provided at the end of the pair of clamping blocks that are close to each other.

[0012] Furthermore, connecting seats are provided on both sides of the clamping block. The connecting seat on one side of the clamping block is slidably connected to the sliding shaft, and the connecting seat on the other side of the clamping block is threadedly connected to the screw rod, and a hexagonal wrench is provided at one end of the screw rod.

[0013] Furthermore, the screw rod is composed of two threaded rod portions with opposite thread rotation directions, and the connecting seats provided on the two clamping blocks are respectively connected to the two different threaded rod portions of the screw rod.

[0014] Beneficial effects of the present invention: 1. The present invention controls the operation of the motor to mesh the driving gear with the outer gear provided on the outer ring of the rotating disk, driving the rotating disk to rotate, thereby controlling the wire assembly connected to the bottom end of the telescopic rod of the first electrically controlled telescopic member to rotate along the outer ring of the winding roller, and combining the first electrically controlled telescopic member to control the lifting of the wire assembly, so as to wind the steel wire on the winding roller. Compared with the traditional roller-driven winding, the winding method saves the steps of disassembling and replacing the roller, and greatly improves the winding speed; 2. In the process of the wire assembly rotating, the elastic force of the elastic telescopic rod applies tension to the steel wire guided by the tensioning wire member, thereby ensuring the tension of the steel wire and the winding effect during the winding process; the third electrically controlled telescopic member controls the lifting and lowering of the elastic telescopic rod and the tensioning wire member, thereby achieving the effect of adjusting the tension; 3. The present invention inserts one axial end of the winding roller into the clamping groove provided between the two clamping blocks, and rotates the hexagonal wrench to drive the two sections of the threaded rod on the screw to engage and transmit with the connecting seats on one side of the two clamping blocks, thereby controlling the two clamping blocks to clamp and fix the axial portion of the winding roller. The fixing method of the winding roller is simple and convenient, and the conveying device can switch the workstations of different winding roller fixing components on the conveyor belt, which is convenient for the disassembly and assembly of the winding roller, and does not conflict with the winding process, which is beneficial to improving the winding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural entity of the winding roller fixing assembly in the present invention; Figure 3 It is a front cross-sectional view of the structure of the present invention; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 for Figure 3 The enlarged view of point B in the middle; Figure 6 for Figure 3 Enlarged view of point C in the middle.

[0016] In the figure: 1, main support; 101, adapter; 1011, rotating disk; 102, top frame; 2, first electric telescopic member; 201, second electric telescopic member; 202, third electric telescopic member; 3, wire assembly; 301, wire main cylinder; 302, lower wire head; 3021, first adapter sleeve; 3022, first lower guide wheel seat; 3023, first lower guide wheel; 3024, second lower guide wheel seat; 3025, second lower guide wheel; 303, upper wire head; 3031, second adapter sleeve; 3032, first upper guide wheel seat; 3033, first upper guide wheel; 3034, second upper guide wheel seat; 3035, second upper guide wheel; 30 36. Upper adapter; 304. Upper adapter base; 4. Motor; 401. Driving gear; 5. Side wire head; 501. First side guide wheel seat; 502. First side guide wheel; 503. Second side guide wheel seat; 504. Second side guide wheel; 6. Elastic telescopic rod; 601. Tensioning wire member; 6011. Tension wheel seat; 6012. Tension wheel; 7. Conveying device; 8. Winding roller fixing assembly; 801. Fixing member base; 802. Shaft support; 803. Sliding shaft; 804. Screw rod; 8041. Hexagonal wrench; 805. Clamp block; 8051. Clamp groove; 8052. Connecting seat; 9. Winding roller; 10. Steel wire. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0018] A tire bead wire fast wire collection device, comprising a main bracket 1, a transfer seat 101 is provided on the top of the main bracket 1, a rotating disk 1011 is rotatably connected to the bottom of the transfer seat 101, a first electrically controlled telescopic member 2 is provided on the rotating disk 1011, a telescopic rod of the first electrically controlled telescopic member 2 extends vertically downward, and a conductor assembly 3 is connected to the bottom end of the telescopic rod of the first electrically controlled telescopic member 2, the conductor assembly 3 comprises an upper transfer base 304 connected to the bottom end of the telescopic rod of the first electrically controlled telescopic member 2, and an upper conductor assembly 3 is connected to the bottom of the upper transfer base 304 The upper conductor head 303 is connected to the conductor main cylinder 301 at the bottom, and the lower conductor head 302 is connected to the lower conductor head 302 at the bottom of the conductor main cylinder 301. The steel wire 10 is introduced along the upper conductor head 303, passes through the conductor main cylinder 301, and finally leads out along the lower conductor head 302. The top of the main bracket 1 is provided with a top frame 102, and the top frame 102 is provided with a motor 4. The output shaft of the motor 4 is connected with a driving gear 401, and the outer ring of the rotating disk 1011 is provided with an external gear, and the driving gear 401 is meshed with the outer ring gear of the rotating disk 1011. By controlling the operation of the motor 4, the driving gear 401 is meshed with the external gear provided on the outer ring of the rotating disk 1011, and the rotating disk 1011 is driven to rotate, thereby controlling the conductor assembly 3 connected to the bottom end of the telescopic rod of the first electrically controlled telescopic member 2 to rotate along the outer ring of the winding roller 9, and combining the first electrically controlled telescopic member 2 to control the lifting of the conductor assembly 3, so that the steel wire 10 is wound on the winding roller 9.

[0019] Combination Figure 3 , Figure 4 and Figure 5 As shown, the conductor main cylinder 301 is a hollow tube body, the lower conductor head 302 includes a first adapter sleeve 3021 rotatably connected to the conductor main cylinder 301, a first lower guide wheel seat 3022 is provided at the bottom of the first adapter sleeve 3021, and a pair of first lower guide wheels 3023 for vertically guiding the steel wire 10 are provided in the first lower guide wheel seat 3022, a second lower guide wheel seat 3024 is integrally formed at the bottom end of the first lower guide wheel seat 3022, and a pair of second lower guide wheels 3025 for horizontally guiding the steel wire 10 are provided on the second lower guide wheel seat 3024, and the upper conductor head 303 includes a first adapter sleeve 3021 rotatably connected to the conductor main cylinder 301, a first lower guide wheel seat 3022 is provided ... second lower guide wheel seat 3024 is provided with a pair of second lower guide wheels 3025 for horizontally guiding the steel wire 10, and a second lower guide wheel seat 3024 is provided with a first lower guide wheel 3025 for horizontally guiding the steel wire 10, and a second lower guide wheel seat 3024 is provided with a first lower guide wheel 3025 for horizontally guiding the steel wire 10, and a second lower guide wheel seat 3024 is provided with a first lower guide wheel 3025 for horizontally guiding the steel wire 10, and a second lower guide wheel seat 3024 is provided A rotatably connected second adapter sleeve 3031, the top of the second adapter sleeve 3031 is connected to a first upper guide wheel seat 3032, the first upper guide wheel seat 3032 is provided with a pair of first upper guide wheels 3033 for vertically guiding the steel wire 10, a second upper guide wheel seat 3034 is integrally formed on one side of the first upper guide wheel seat 3032, and the second upper guide wheel seat 3034 is provided with a pair of second upper guide wheels 3035 for horizontally guiding the steel wire 10, the top of the first upper guide wheel seat 3032 is integrally formed with an upper adapter joint 3036, and the upper adapter joint 3036 is rotatably connected to the bottom of the upper adapter base 304.

[0020] A second electrically-controlled telescopic member 201 is provided on the top frame 102, and the telescopic rod portion of the second electrically-controlled telescopic member 201 extends vertically downward, and a side conductor head 5 is connected to the bottom of the telescopic rod of the second electrically-controlled telescopic member 201, and the side conductor head 5 includes a first side guide wheel seat 501 connected to the telescopic rod end of the second electrically-controlled telescopic member 201, and a pair of first side guide wheels 502 for guiding the steel wire 10 to deflect up and down are provided in the first side guide wheel seat 501, and a second side guide wheel seat 503 is integrally formed on one side of the first side guide wheel seat 501 close to the conductor assembly 3, and a pair of second side guide wheels 504 for horizontally guiding the steel wire 10 are provided on the second side guide wheel seat 503. As the rotating disk 1011 rotates, the conductor assembly 3 rotates around the winding roller 9 as the center, and the second electrically-controlled telescopic member 201 controls the lifting and lowering of the side conductor head 5 to be at the same height as the upper conductor head 303, thereby ensuring that the steel wire 10 between the side conductor head 5 and the upper conductor head 303 is transported on the same horizontal plane.

[0021] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: the present invention controls the operation of the motor 4 so that the driving gear 401 engages with the external gear provided on the outer ring of the rotating disk 1011 for transmission, thereby driving the rotating disk 1011 to rotate, thereby controlling the wire assembly 3 connected to the bottom end of the telescopic rod of the first electrically-controlled telescopic component 2 to rotate along the outer ring of the winding roller 9, and combining with the first electrically-controlled telescopic component 2 to control the lifting of the wire assembly 3, the steel wire 10 is wound on the winding roller 9. Compared with the traditional roller-driven winding, the winding method saves the steps of disassembling and replacing the rollers, and the winding speed is greatly improved. Example 2

[0022] A third electrically-controlled telescopic component 202 is provided on the top frame 102 and located outside the second electrically-controlled telescopic component 201. The telescopic rod end of the third electrically-controlled telescopic component 202 extends vertically downward. The telescopic rod end of the third electrically-controlled telescopic component 202 is connected to an elastic telescopic rod 6. The bottom end of the elastic telescopic rod 6 is connected to a tensioning wire member 601. The tensioning wire member 601 includes a tension wheel seat 6011 fixed to the bottom end of the elastic telescopic rod 6. A pair of tension wheels 6012 for guiding the upward and downward deflection of the steel wire 10 are provided in the tension wheel seat 6011.

[0023] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: during the rotation of the wire assembly 3, the elastic force of the elastic telescopic rod 6 applies a tensioning force to the steel wire 10 guided by the tensioning wire member 601, thereby ensuring the tension of the steel wire 10 during the winding process and ensuring the winding effect; the elastic telescopic rod 6 and the tensioning wire member 601 are controlled to rise and fall by the third electrically-controlled telescopic member 202, thereby achieving the effect of adjusting the tensioning force. Example 3

[0024] A conveying device 7 is provided at the bottom of the rotating disk 1011, and a transmission belt is provided on the conveying device 7, and a plurality of winding roller fixing assemblies 8 for fixing the winding roller 9 are provided on the conveyor belt of the conveying device 7, and the axial direction of the winding roller 9 is vertically arranged, and the winding roller 9 and the rotating disk 1011 are arranged coaxially, and the winding roller fixing assembly 8 includes a fixing base 801, and a pair of shaft rod brackets 802 are integrally formed on the fixing base 801, and a sliding shaft 803 and a screw rod 804 arranged in parallel are connected between the pair of shaft rod brackets 802, and the sliding shaft 803 and the screw rod 804 are connected to each other. A pair of clamping blocks 805 are connected, and a clamping groove 8051 is provided at one end of the pair of clamping blocks 805 that are close to each other. Connecting seats 8052 are provided on both sides of the clamping blocks 805. The connecting seat 8052 on one side of the clamping block 805 is slidably connected to the sliding shaft 803, and the connecting seat 8052 on the other side of the clamping block 805 is threadedly connected to the screw rod 804. A hexagonal wrench 8041 is provided at one end of the screw rod 804. The screw rod 804 consists of two sections of threaded rod portions with opposite thread rotation directions, and the connecting seats 8052 provided on the two clamping blocks 805 are respectively connected to two different threaded rod portions of the screw rod 804.

[0025] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: the present invention inserts one axial end of the winding roller 9 into the clamping groove 8051 provided between the two clamping blocks 805, and rotates the hexagonal wrench 8041 to drive the two sections of the threaded rod on the screw 804 to engage and transmit with the connecting seat 8052 on one side of the two clamping blocks 805, thereby controlling the two clamping blocks 805 to clamp and fix the axial portion of the winding roller 9. The fixing method of the winding roller 9 is simple and convenient, and the conveying device 7 can switch the workstations of different winding roller fixing components 8 on the conveyor belt, which is convenient for the disassembly and assembly of the winding roller 9, and does not conflict with the winding process, which is beneficial to improving the winding efficiency.

[0026] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A tire bead wire rapid wire collection device, comprising a main support (1), characterized in that: The top of the main support (1) is provided with an adapter seat (101), the bottom of the adapter seat (101) is rotatably connected to a rotating disk (1011), the rotating disk (1011) is provided with a first electrically controlled telescopic component (2), the telescopic rod of the first electrically controlled telescopic component (2) extends vertically downward, and the bottom end of the telescopic rod of the first electrically controlled telescopic component (2) is connected to a wire assembly (3), the wire assembly (3) comprises an upper adapter base (304) connected to the bottom end of the telescopic rod of the first electrically controlled telescopic component (2), an upper wire head (303) is connected to the bottom of the upper adapter base (304), a wire main tube (301) is connected to the bottom of the upper wire head (303), and the wire main tube The bottom end of the rotating disk (1011) is connected to a lower conductor head (302), a conveying device (7) is provided at the bottom of the rotating disk (1011), a transmission belt is provided on the conveying device (7), and a plurality of groups of winding roller fixing assemblies (8) for fixing a winding roller (9) are provided on the conveyor belt of the conveying device (7), the axial direction of the winding roller (9) is vertically arranged, and the winding roller (9) and the rotating disk (1011) are coaxially arranged, and a second electrically controlled telescopic component (201) is provided on the top frame (102), the telescopic rod portion of the second electrically controlled telescopic component (201) extends vertically downward, and the bottom of the telescopic rod of the second electrically controlled telescopic component (201) is connected to a side conductor head (5).

2. A tire bead wire rapid wire collection device according to claim 1, characterized in that: A top frame (102) is provided on the top of the main support (1), a motor (4) is provided on the top frame (102), an output shaft of the motor (4) is connected to a driving gear (401), an outer ring of the rotating disk (1011) is provided with an external gear, and the driving gear (401) is in driving meshing engagement with the outer ring gear of the rotating disk (1011).

3. The tire bead wire rapid wire collection device according to claim 1, characterized in that: The conductor main cylinder (301) is a hollow tube, and the lower conductor head (302) comprises a first adapter sleeve (3021) rotatably connected to the conductor main cylinder (301); a first lower guide wheel seat (3022) is provided at the bottom of the first adapter sleeve (3021), and a pair of first lower guide wheels (3023) for vertically guiding the steel wire (10) are provided in the first lower guide wheel seat (3022); a second lower guide wheel seat (3024) is integrally formed at the bottom end of the first lower guide wheel seat (3022), and a pair of second lower guide wheels (3025) for horizontally guiding the steel wire (10) are provided on the second lower guide wheel seat (3024).

4. The tire bead wire rapid wire collection device according to claim 1, characterized in that: The upper conductor head (303) comprises a second adapter sleeve (3031) rotatably connected to the top of the conductor main cylinder (301); the top of the second adapter sleeve (3031) is connected to a first upper guide wheel seat (3032); a pair of first upper guide wheels (3033) for vertically guiding the steel wire (10) are provided in the first upper guide wheel seat (3032); a second upper guide wheel seat (3034) is integrally formed on one side of the first upper guide wheel seat (3032); and a pair of second upper guide wheels (3035) for horizontally guiding the steel wire (10) are provided on the second upper guide wheel seat (3034); an upper adapter (3036) is integrally formed on the top of the first upper guide wheel seat (3032); and the upper adapter (3036) is rotatably connected to the bottom of the upper adapter base (304).

5. The tire bead wire rapid wire collection device according to claim 1, characterized in that: The side conductor head (5) comprises a first side guide wheel seat (501) connected to the telescopic rod end of the second electrically controlled telescopic member (201), a pair of first side guide wheels (502) for guiding the steel wire (10) to deflect upward and downward are provided in the first side guide wheel seat (501), a second side guide wheel seat (503) is integrally formed on a side of the first side guide wheel seat (501) close to the conductor assembly (3), and a pair of second side guide wheels (504) for guiding the steel wire (10) horizontally are provided on the second side guide wheel seat (503).

6. The tire bead wire rapid wire collection device according to claim 1, characterized in that: A third electrically-controlled telescopic component (202) is provided on the top frame (102) and is located outside the second electrically-controlled telescopic component (201); the telescopic rod end of the third electrically-controlled telescopic component (202) extends vertically downward; the telescopic rod end of the third electrically-controlled telescopic component (202) is connected to an elastic telescopic rod (6); the bottom end of the elastic telescopic rod (6) is connected to a tensioning wire member (601); the tensioning wire member (601) comprises a tension wheel seat (6011) fixed to the bottom end of the elastic telescopic rod (6); a pair of tension wheels (6012) for guiding the steel wire (10) to deflect upward and downward are provided in the tension wheel seat (6011).

7. The tire bead wire rapid wire collection device according to claim 1, characterized in that: The winding roller fixing assembly (8) comprises a fixing member base (801), a pair of shaft rod brackets (802) are integrally formed on the fixing member base (801), a sliding shaft (803) and a screw rod (804) arranged in parallel are connected between the pair of shaft rod brackets (802), a pair of clamping blocks (805) are connected to the sliding shaft (803) and the screw rod (804), and a clamping groove (8051) is provided at one end of the pair of clamping blocks (805) that are close to each other.

8. The tire bead wire rapid wire collection device according to claim 7, characterized in that: Both sides of the clamping block (805) are provided with connecting seats (8052); the connecting seat (8052) on one side of the clamping block (805) is slidably connected to the sliding shaft (803); the connecting seat (8052) on the other side of the clamping block (805) is threadedly connected to the screw rod (804); and one end of the screw rod (804) is provided with a hexagonal wrench (8041).

9. A tire bead wire rapid wire collection device according to claim 8, characterized in that: The screw rod (804) is composed of two threaded rod sections with opposite thread rotation directions, and the connecting seats (8052) provided on the two clamping blocks (805) are respectively connected to the two different threaded rod sections of the screw rod (804).

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