Fabricated decoration component processing tool

Abstract

The application relates to the technical field of decoration tools, and discloses an assembled decoration component machining tool which comprises a supporting table, a horizontal moving mechanism and a turnover mechanism. The horizontal moving mechanism comprises a supporting plate arranged at the side edge of the supporting table, the supporting plate is fixedly connected with a first guide rod, the middle part of the first guide rod is slidably connected with sliding seats, a second guide rod is arranged between the two sliding seats, and the middle part of the second guide rod is slidably connected with a bottom plate. The turnover mechanism comprises a stand column arranged on the bottom plate, the end of the stand column is provided with a top plate, the side edge of the top plate is provided with a supporting seat, the supporting seat is rotationally connected with a supporting shaft, and the end, away from the top plate, of the supporting shaft is provided with a clamping assembly. The application is suitable for the assembled decoration component machining tool, the whole device completes the fixing treatment of the plate, improves the machining precision, and also improves the machining efficiency, and the whole machining process can be completed after one-time clamping.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of decoration tools, and in particular to a fabricated decoration component processing tool. BACKGROUND

[0002] Fabricated decoration is a decoration method in which parts produced in a factory are combined and installed on site. In particular, for some full-house custom decoration nowadays, cabinet bodies such as cabinets are precisely cut from boards in a processing factory, and only different boards need to be assembled on the decoration site.

[0003] When boards are assembled, two boards need to be connected by means of a pin shaft or a bolt. Commonly, decoration personnel fix the boards by hand, which leads to poor stability of the boards and affects the overall precision of the final cabinet body. Therefore, related auxiliary processing tools need to be used during decoration. SUMMARY

[0004] The present application provides a fabricated decoration component processing tool, which solves the problems in the background art.

[0005] To achieve the above object, the present application provides the following technical scheme.

[0006] A fabricated decoration component processing tool, comprising a support table, a horizontal movement mechanism and a turnover mechanism.

[0007] The horizontal movement mechanism comprises a support plate arranged on the side of the support table, the support plate is fixedly connected with a first guide rod, the middle part of the first guide rod is slidably connected with a sliding seat, a second guide rod is arranged between the two sliding seats, the middle part of the second guide rod is slidably connected with a bottom plate, the second shaft is rotatably connected with the bottom plate, the side of the second shaft away from the ground is provided with a driving gear, the driving gear is meshingly connected with a rack fixedly connected with the sliding seat, the side of the bottom plate close to the ground is provided with a first shaft, the middle part of the first shaft is rotatably connected with a deflection handle, the end of the deflection handle is provided with a semicircular gear ring, the semicircular gear ring is meshingly connected with a driven gear fixedly connected with the second shaft.

[0008] The turnover mechanism comprises a stand arranged on the bottom plate, the end of the stand is provided with a top plate, the side of the top plate is provided with a support seat, the support seat is rotatably connected with a support shaft, the end of the support shaft away from the top plate is provided with a clamping assembly, the top plate away from the support seat is provided with a first bearing seat, the first bearing seat is provided with a rotating handle, the middle part of the top plate is provided with a transmission assembly for driving the support shaft to rotate with the rotating handle.

[0009] As a preferred technical scheme of the present application, the transmission assembly comprises a second bevel gear rotationally connected to the middle part of the top plate, the first bevel gear rotationally connected to the second bevel gear on the side close to the first bearing seat and fixedly connected to the rotating handle, and the third bevel gear rotationally connected to the second bevel gear on the side close to the support base and synchronously rotated with the support shaft.

[0010] As a preferred technical scheme of the present application, the first bearing seat is rotationally connected with a first rotating sleeve, the middle part of the rotating handle is provided with a limiting ring, and the limiting ring is provided between the first rotating sleeve and the first reset spring for driving the rotating handle to move away from the top plate.

[0011] As a preferred technical scheme of the present application, the top plate is provided on the side close to the support base with a second bearing seat, the second bearing seat is rotationally connected with a second rotating sleeve, the middle part of the second rotating sleeve is slidingly connected with a transmission shaft, one end of the transmission shaft is fixedly connected with the third bevel gear, and the other end of the transmission shaft is slidingly connected with the support shaft.

[0012] As a preferred technical scheme of the present application, the middle part of the transmission shaft is provided with a limiting gear, the limiting gear is provided between the second rotating sleeve and the second reset spring for driving the transmission shaft to move away from the top plate, the side close to the center of the top plate of the limiting gear is provided with a limiting seat fixedly connected with the top plate and matched with the limiting gear, and the end part of the rotating handle is provided with a ball head matched with the end part of the transmission shaft.

[0013] As a preferred technical scheme of the present application, the clamping assembly comprises a support frame fixedly connected with the support shaft, the inside of the support frame is provided with an air inlet pipe, the outside of the air inlet pipe is provided with an air guide pipe in communication with the air inlet pipe, the end part of the air guide pipe is provided with a suction head, and the suction head is detachably connected with the to-be-assembled plate.

[0014] As a preferred technical scheme of the present application, the side edge of the support table is provided with a machining assembly for machining the to-be-assembled plate.

[0015] As a preferred technical scheme of the present application, the machining assembly comprises a support frame fixedly connected with the support table, the side away from the support table of the support frame is slidingly connected with a sliding rod, the side close to the support table of the sliding rod is provided with a lifting plate, and the middle part of the lifting plate is provided with a machining head.

[0016] As a preferred technical scheme of the present application, the side away from the support table of the sliding rod is provided with a push plate, the push plate is provided between the support frame and the third reset spring for driving the machining head to move away from the bottom plate.

[0017] As a preferred technical scheme of the present application, the support frame is provided with vertical plates on two sides, the end of the vertical plate is provided with a rotating seat, the middle part of the rotating seat is fixedly connected with one end of a deflection plate, the other end of the deflection plate is rotatably connected with one end of a push rod, the other end of the push rod is rotatably connected with a push plate, and the end of the rotating seat is provided with a pull handle.

[0018] The present application has the following advantages:

[0019] The present application is suitable for a fabricated decoration component processing tool. Different direction plates can be combined into a to-be-assembled plate in a fixed direction through the clamping assembly. The transverse moving mechanism and the overturning mechanism can move the assembled to-be-assembled plate freely to facilitate the processing head above to process. The whole device completes the fixing of the plate, improves the processing precision, and also improves the processing efficiency. The whole processing process can be completed after one clamping. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0021] Figure 1 It is a structural schematic view of a fabricated decoration component processing tool.

[0022] Figure 2 It is a right view of a fabricated decoration component processing tool.

[0023] Figure 3 It is a structural schematic view of a fabricated decoration component processing tool after the to-be-assembled plate is clamped.

[0024] Figure 4 It is a structural schematic view of a support table in a fabricated decoration component processing tool.

[0025] Figure 5 It is a structural schematic view above a bottom plate in a fabricated decoration component processing tool.

[0026] Figure 6 It is a structural schematic view below a bottom plate in a fabricated decoration component processing tool.

[0027] Figure 7 It is a structural schematic view of an overturning mechanism in a fabricated decoration component processing tool.

[0028] Figure 8 It is Figure 7A local enlarged view of the middle A.

[0029] Figure 9 It is a structural schematic view of the inside of the support frame in the processing tool of the fabricated decoration component.

[0030] Figure 10 It is a structural schematic view of the processing assembly in the processing tool of the fabricated decoration component.

[0031] In the figure: 1, support table; 2, horizontal moving mechanism; 3, overturning mechanism; 4, processing assembly; 5, bottom plate; 6, stand column; 7, top plate; 8, support plate; 9, first guide rod; 10, sliding seat; 11, second guide rod; 12, rack; 13, sliding support block; 14, driving gear; 15, second rotating shaft; 16, driven gear; 17, semicircular gear ring; 18, first rotating shaft; 19, deflection handle; 20, first bearing seat; 21, rotating handle; 22, support seat; 23, support shaft; 24, clamping assembly; 25, first bevel gear; 26, second bevel gear; 27, third rotating shaft; 28, transmission shaft; 29, third bevel gear; 30, limiting ring; 31, first return spring; 32, first rotating sleeve; 33, transmission assembly; 34, second rotating sleeve; 35, second return spring; 36, limiting gear; 37, limiting seat; 38, air inlet pipe; 39, air guide pipe; 40, suction head; 41, support frame; 42, rotating joint; 43, support frame; 44, sliding rod; 45, lifting plate; 46, driving motor; 47, processing head; 48, vertical plate; 49, third return spring; 50, push plate; 51, push rod; 52, rotating seat; 53, deflection plate; 54, to-be-assembled plate; 55, ball head; 56, second bearing seat; 57, downward pulling handle. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In one embodiment, please refer to Figures 1-10 A fabricated decoration component processing tool, comprising a support table 1, the support table 1 is a U-shaped structure provided in front of the opening, and in order to facilitate the use of the operator, support legs can be arranged on the lower surface of the support table 1, so that the height of the support table 1 is just suitable for the operation height when the operator stands, further comprising a horizontal moving mechanism 2 and an overturning mechanism 3;

[0034] The horizontal moving mechanism 2 comprises support plates 8 arranged on the sides of the support table 1, the support plates 8 are fixedly connected with first guide rods 9 which are front-to-back and arranged on the left and right sides above the support table 1, the front and rear ends of the first guide rods 9 are fixedly connected with vertically arranged support plates 8, the lower ends of the support plates 8 are fixedly connected with the support table 1, sliding seats 10 are slidingly connected in the middle of the first guide rods 9, front-to-back second guide rods 11 which are fixedly connected with the sliding seats 10 are arranged on the left and right sides of the front and rear of the left and right sliding seats 10, the middle portions of the front and rear second guide rods 11 are slidingly connected with the front and rear sides of a horizontally arranged bottom plate 5, a second rotating shaft 15 which is vertically arranged is rotatingly connected to the middle portion of the rear side of the bottom plate 5, the upper end of the second rotating shaft 15 is fixedly connected with a driving gear 14, sliding support blocks 13 are arranged on the left and right sides of the front end of the upper surface of the bottom plate 5, rear sides of the sliding support blocks 13 are slidingly connected with left-to-right racks 12, the middle portions of the racks 12 are meshingly connected with the driving gear 14, the left and right ends of the racks 12 are fixedly connected with the middle portions of the left and right sliding seats 10, a first rotating shaft 18 which is vertically arranged is rotatingly connected to the front side of the lower surface of the bottom plate 5, the rear side of a deflection handle 19 is rotatingly connected below the first rotating shaft 18, a semicircular gear ring 17 is fixedly connected to the rear end of the deflection handle 19, the rear side of the semicircular gear ring 17 is meshingly connected with a driven gear 16, the driven gear 16 is fixedly connected with the lower end of the second rotating shaft 15, and the diameter of the driven gear 16 is smaller than the diameter of the driving gear 14 above, so that the displacement amplification effect can be achieved, so that the bottom plate 5 can be stably moved when the deflection handle 19 is rotating, and the damping device is arranged between the second rotating shaft 15 and the bottom plate 5, so that the driving gear 14 will not rotate when there is no external force;

[0035] The overturning mechanism 3 comprises vertical columns 6 which are vertically arranged at the four corners of the upper surface of the bottom plate 5, the upper ends of the vertical columns 6 are fixedly connected with the lower surface of a top plate 7, a support seat 22 is arranged on the rear side of the top plate 7, the middle portion of a front-to-back support shaft 23 is rotatingly connected above the support seat 22, a clamping assembly 24 is fixedly connected to the rear end of the support shaft 23, the clamping assembly 24 can be used to fix a to-be-assembled plate 54, a first bearing seat 20 is arranged on the front side of the upper surface of the top plate 7, a front-to-back rotating handle 21 is arranged above the first bearing seat 20, a transmission assembly 33 is arranged in the middle of the top plate 7, the rotation of the rotating handle 21 can be transmitted to the support shaft 23 through the transmission assembly 33, so that the clamping assembly 24 adaptively drives the to-be-assembled plate 54 to overturn.

[0036] In one of the embodiments, the transmission assembly 33 comprises a third rotating shaft 27 vertically arranged in the middle of the top plate 7, the third rotating shaft 27 is rotationally connected with the top plate 7, the upper end of the third rotating shaft 27 is fixedly connected with the second bevel gear 26, the front side of the second bevel gear 26 is meshingly connected with the first bevel gear 25, the rear end of the first bevel gear 25 is fixedly connected with the rotating handle 21, the first rotating sleeve 32 is rotationally connected above the first bearing seat 20, the middle of the rotating handle 21 is provided with a limiting ring 30, the first reset spring 31 is arranged between the limiting ring 30 and the first rotating sleeve 32, the first reset spring 31 will push the rotating handle 21 forward, so that the first bevel gear 25 is disengaged from the second bevel gear 26 when there is no external force, thereby avoiding the problem of accidental touch, and the second bearing seat 56 is arranged on the rear side of the upper surface of the top plate 7, the second rotating sleeve 34 facing front and back is rotationally connected above the second bearing seat 56, the front end of the second rotating sleeve 34 is fixedly connected with the third bevel gear 29 meshingly connected with the second bevel gear 26, the middle of the second rotating sleeve 34 is slidingly connected with the transmission shaft 28 facing front and back, the rear side of the transmission shaft 28 is slidingly connected with the front side of the supporting shaft 23, and the cross section of the transmission shaft 28 is polygonal, so that even if the transmission shaft 28 can slide forward and backward, the transmission shaft 28 can still transmit the rotation of the second rotating sleeve 34 to the supporting shaft 23, the limiting gear 36 is arranged on the rear side of the transmission shaft 28, the second reset spring 35 is arranged between the limiting gear 36 and the second rotating sleeve 34, the limiting seat 37 is arranged on the rear side of the upper surface of the top plate 7, the second reset spring 35 will push the transmission shaft 28 forward, so that the limiting gear 36 is in contact with the limiting seat 37, at this time the limiting seat 37 limits the rotation of the limiting gear 36, so that the transmission shaft 28 stops rotating, that is, the rear clamping assembly 24 stops rotating, the ball head 55 is arranged at the rear end of the rotating handle 21, so that when the rotating handle 21 moves backward, the ball head 55 will be in contact with the front end of the transmission shaft 28, so that the transmission shaft 28 moves backward with the rotating handle 21, that is, when the first bevel gear 25 on the front side moves backward and is meshingly connected with the second bevel gear 26, the limiting gear 36 is disengaged from the limiting seat 37, at this time the gear transmission makes the transmission shaft 28 stably rotate.

[0037] In one of the embodiments, the clamping assembly 24 comprises a support frame 41 fixedly connected with the support shaft 23, the support frame 41 is a container with the opening facing the rear, an air inlet pipe 38 is arranged at the middle of the support frame 41, a rotary joint 42 is arranged at the rear end of the air inlet pipe 38, the rotary joint 42 can be connected with the air pipe outside, so that even when the clamping assembly 24 rotates, the air pipe outside will not be wound outside the clamping assembly 24, and a gas guide pipe 39 is arranged on the side wall of the support frame 41, one end of the gas guide pipe 39 is connected with the air inlet pipe 38, and the other end of the gas guide pipe 39 is connected with the suction head 40, so that when the air pump outside works, part of the suction head 40 generates negative pressure, and the fixing treatment of the to-be-assembled plate 54 is completed through the suction head 40, and the gas guide pipe 39 can be designed as a telescopic pipe structure, and the suction head 40 is also hinged with the end of the gas guide pipe 39, so that the positional relationship between different plates of the to-be-assembled plate 54 can be freely combined, and only the angle of the suction head 40 and the length of the gas guide pipe 39 need to be controlled.

[0038] In one of the embodiments, the rear middle part of the support table 1 is provided with a machining assembly 4 for machining the to-be-assembled plate 54. The machining assembly 4 comprises a support frame 43 fixedly connected with the rear middle part of the support table 1, the support frame 43 is an L-shaped structure with the upper end extending forward, vertical sliding rods 44 are slidingly connected on the front and rear sides of the upper end of the support frame 43, the lower ends of the sliding rods 44 are fixedly connected with the ends of the front and rear upwardly arranged lifting plates 45, machining heads 47 are arranged on the middle part of the lower surfaces of the lifting plates 45, the machining heads 47 can be drill bits or screwdrivers, so that the plate can be punched or screwed, and a driving motor 46 is arranged above the lifting plates 45, the driving motor 46 can drive the machining heads 47 to rotate at high speed. A push plate 50 is fixedly connected with the upper end of the sliding rod 44, vertical standing plates 48 are vertically arranged on the left and right sides of the upper end of the support frame 43, rotary seats 52 are rotatably connected with the upper ends of the left and right push rods 51, the middle parts of the rotary seats 52 are fixedly connected with the rear ends of the deflection plates 53, the front ends of the deflection plates 53 are rotatably connected with the upper ends of the push rods 51, the lower ends of the push rods 51 are rotatably connected with the middle parts of the upper surfaces of the push plates 50, and the third return springs 49 are arranged between the push plates 50 and the support frame 43, the third return springs 49 will push the push plates 50 upward, and the lower pull handles 57 are fixedly connected with the left and right ends of the rotary seats 52, the lower pull handles 57 are U-shaped structures with the opening facing the rear.

[0039] In the implementation process of the embodiment, first, the support table 1 is stably placed on the ground, the air inlet pipe 38 is connected with the related air pump, at this time, the suction head 40 part has a negative pressure, the to-be-assembled plate 54 to be assembled is placed on the suction head 40, and the angles and positions of different to-be-assembled plates 54 are adjusted, at this time, the whole device can start processing, the driving motor 46 is started, and the driving motor 46 drives the machining head 47 to rotate at high speed.

[0040] When the angle of the whole to-be-assembled plate 54 needs to be adjusted, the deflection handle 19 can be first held, the horizontal position of the bottom plate 5 is stabilized, at this time, the rotating handle 21 can be held by the other hand, the rotating handle 21 is pushed to the rear side, at this time, the rotating handle 21 drives the transmission shaft 28 to move rearward, the limiting gear 36 is disengaged from the limiting seat 37, the first bevel gear 25 is engaged with the second bevel gear 26, at this time, the rotating handle 21 is rotated, the rotating handle 21 drives the clamping assembly 24 to rotate through gear transmission, so that the to-be-assembled plate 54 is flipped around the axis of the supporting shaft 23, and the face to be processed is rotated to be directly above, the rotating handle 21 is released, the first reset spring 31 drives the rotating handle 21 to move forward, the first bevel gear 25 is disengaged from the second bevel gear 26, the second reset spring 35 drives the transmission shaft 28 to move forward, and the limiting gear 36 is disengaged from the limiting seat 37, at this time, the angle of the to-be-assembled plate 54 is locked.

[0041] When the position of the to-be-assembled plate 54 needs to be moved, the operator holds the deflection handle 19, pulls the deflection handle 19 forward and backward to make the sliding seat 10 move forward and backward along the first guide rod 9, so that the clamping assembly 24 drives the to-be-assembled plate 54 to move forward and backward, and the front end of the deflection handle 19 is rotated left and right, the bottom plate 5 slides left and right on the second guide rod 11, so that the clamping assembly 24 drives the to-be-assembled plate 54 to move left and right, until the position to be processed of the to-be-assembled plate 54 is moved to be directly below the machining head 47, at this time, the lower pull handle 57 can be pressed down, so that the machining head 47 moves downward, and the machining head 47 processes the to-be-assembled plate 54.

[0042] The assembly type decoration component processing tool can make different direction plates be combined into the to-be-assembled plate 54 according to fixed directions through the clamping assembly 24, and the transverse moving mechanism 2 and the flipping mechanism 3 can make the to-be-assembled plate 54 after assembly move freely to facilitate the machining head 47 above to process, the whole device completes the fixing of the plate, improves the processing precision, and also improves the processing efficiency, and the whole processing process can be completed after one clamping.

[0043] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A fabricated finishing component processing tool, characterized by, The device comprises a supporting table, a horizontal moving mechanism and a turnover mechanism. The horizontal moving mechanism comprises supporting plates arranged on the side edges of the supporting table, the supporting plates are fixedly connected with first guide rods, the middle parts of the first guide rods are slidably connected with sliding seats, a second guide rod is arranged between the two sliding seats, the middle part of the second guide rod is slidably connected with a bottom plate, a second rotating shaft is rotatably connected with the bottom plate, a driving gear is arranged on the side of the second rotating shaft away from the ground, the driving gear is meshingly connected with a rack fixedly connected with the sliding seat, a first rotating shaft is arranged on the side of the bottom plate close to the ground, the first rotating shaft is rotatably connected with the middle part of a deflection handle, a semicircular gear ring is arranged on the end of the deflection handle, the semicircular gear ring is meshingly connected with a driven gear fixedly connected with the second rotating shaft. The turnover mechanism comprises a stand arranged on the bottom plate, a top plate is arranged on the end of the stand, a supporting seat is arranged on the side edge of the top plate, a supporting shaft is rotatably connected with the supporting seat, a clamping assembly is arranged on the end of the supporting shaft away from the top plate, a first bearing seat is arranged on the side of the top plate away from the supporting seat, a rotating handle is arranged on the first bearing seat, a transmission assembly is arranged on the middle part of the top plate and used for driving the supporting shaft to rotate along with the rotating handle. The clamping assembly comprises a supporting frame fixedly connected with the supporting shaft, an air inlet pipe is arranged in the supporting frame, an air guide pipe is arranged on the outer side of the air inlet pipe and in communication with the air inlet pipe, a suction head is arranged on the end of the air guide pipe, the suction head is detachably connected with a to-be-assembled board, a machining assembly is arranged on the side edge of the supporting table and used for machining the to-be-assembled board, the machining assembly comprises a supporting frame fixedly connected with the supporting table, a sliding rod is slidably connected with the side of the supporting frame away from the supporting table, a lifting plate is arranged on the side of the sliding rod close to the supporting table, a machining head is arranged on the middle part of the lifting plate, a push plate is arranged on the side of the sliding rod away from the supporting table, a third reset spring is arranged between the push plate and the supporting frame and used for driving the machining head to move away from the bottom plate, vertical plates are arranged on the two sides of the supporting frame, rotary seats are arranged on the ends of the vertical plates, one end of a deflection plate is fixedly connected with the middle part of the rotary seat, one end of a push rod is rotatably connected with the other end of the deflection plate, the other end of the push rod is rotatably connected with the push plate, and a downward handle is arranged on the end of the rotary seat.

2. The tool for processing the fabricated finishing component according to claim 1, wherein The transmission assembly comprises a second bevel gear rotatably connected with the middle part of the top plate, the side of the second bevel gear close to the first bearing seat is meshingly connected with a first bevel gear fixedly connected with the rotating handle, and the side of the second bevel gear close to the supporting seat is meshingly connected with a third bevel gear rotatable synchronously with the supporting shaft.

3. The tool according to claim 2, wherein A first rotating sleeve is rotatably connected with the first bearing seat, a limiting ring is arranged on the middle part of the rotating handle, a first reset spring is arranged between the limiting ring and the first rotating sleeve and used for driving the rotating handle to move away from the top plate.

4. The tool according to claim 3, wherein A second bearing seat is arranged on the side of the top plate close to the supporting seat, a second rotating sleeve is rotatably connected with the second bearing seat, a transmission shaft is slidably connected with the middle part of the second rotating sleeve, the end of the transmission shaft is fixedly connected with the third bevel gear, and the other end of the transmission shaft is slidably connected with the supporting shaft.

5. The tool according to claim 4, wherein The middle part of the transmission shaft is provided with a limiting gear, the limiting gear and the second rotating sleeve are provided with a second reset spring for driving the transmission shaft to move away from the top plate, the side close to the center of the top plate of the limiting gear is provided with a limiting seat fixedly connected with the top plate and matched with the limiting gear, and the end of the rotating handle is provided with a ball head matched with the end of the transmission shaft.

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