Integrated gate of hydraulic power plant

Abstract

The invention is applicable to the technical field of gates, in particular to a hydraulic power plant integrated gate, which is characterized in that fixed frames are vertically and fixedly mounted in the middles of two sides of the top of a fixed gate body, a transmission frame is fixedly mounted at the middle end of the top of the fixed gate body, a hollow frame is fixedly mounted at the top end of the side edge of the transmission frame, and a bidirectional driving mechanism is arranged in the fixed frame; a switching mechanism is arranged between the outer side of the fixed frame and the outer side of the movable gate frame and is in transmission connection with the bidirectional driving mechanism, and a synchronizing mechanism is arranged in the transmission frame and is in transmission connection with the bidirectional driving mechanism. The movable gate frame can horizontally move oppositely or relatively on the outer side of the fixed gate body along with vertical movement of the fixed gate body, so that the fixed gate body and the movable gate frame can be integrally contracted conveniently while the integral sealing blocking area of the fixed gate body and the movable gate frame is adjusted, and the phenomenon that the fixed gate body and the movable gate frame cannot be damaged when the gate is lifted and opened for use is avoided. The external space is excessively occupied, and the overall applicability of the gate body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gates, and in particular to an integrated gate for a hydropower plant. Background Art

[0002] The integrated gate of a hydropower plant is a device that integrates the gate and the control device into one. This type of integrated gate can release water by opening and closing the gate body, thereby achieving the effect of controlling the amount of water stored upstream. This type of integrated gate is usually composed of a gate seat, a sealing plate and corresponding control components. The sealing plate is driven by the control component to complete the opening and closing operation.

[0003] In order to ensure the quality of the existing gates in the process of use, the gates will be customized in advance to match the inner diameter of the river, but the gates' own blocking size cannot be adjusted after manufacturing. As a result, once the gates' own size is not compatible with the inner diameter of the river, the gates can only be replaced, which greatly increases the cost of blocking the river. Therefore, a new technical solution needs to be designed to solve this problem. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated gate for a hydropower plant, which solves the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: comprising a mounting frame, hydraulic cylinders are vertically fixedly installed on both sides of the top of the mounting frame, a fixed gate body is movably installed inside the mounting frame, and the bottom of the hydraulic cylinder piston rod is fixedly connected to the top of the fixed gate body, and movable gate frames are slidably installed on both ends of the side of the fixed gate body;

[0006] A fixed frame is vertically fixedly installed in the middle of both sides of the top of the fixed gate body, a transmission frame is fixedly installed in the middle of the top of the fixed gate body, and a hollow frame is fixedly installed at the top of the side of the transmission frame;

[0007] A two-way driving mechanism is arranged inside the fixed frame, a conversion mechanism is arranged between the fixed frame and the outer side of the movable gate frame, and the conversion mechanism and the two-way driving mechanism are connected by transmission, a synchronization mechanism is arranged inside the transmission frame, and the synchronization mechanism and the two-way driving mechanism are connected by transmission, and a rotating mechanism is arranged inside the hollow frame, and the rotating mechanism and the synchronization mechanism are connected by transmission.

[0008] As an alternative embodiment of the technical solution of the present application, the bidirectional driving mechanism includes a bidirectional lead screw. A bidirectional lead screw is vertically rotatably installed in the middle of each fixed frame through a bearing. Both sides of the outer part of each bidirectional lead screw are movably sleeved with lifting sleeves through threads. Both ends of the outer side of the lifting sleeve are fixedly installed with transmission rods. Both sides of the outer part of each fixed frame are slidably installed with connecting plates, and the top end of the side of the transmission rod is fixedly connected to the outer side of the connecting plate.

[0009] By adopting the above technical solution, under the rotational driving action of the bidirectional lead screw on the lifting sleeve, the driving force required for the horizontal movement of the movable gate frame can be provided.

[0010] As an alternative embodiment of the technical solution of the present application, the conversion mechanism includes a push rod. Both ends of the outer side of each movable gate frame are fixedly installed with transmission plates. Connecting blocks are fixedly installed in the middle of the outer sides of each connecting plate and the transmission plate. A push rod is obliquely hinged between the sides of each two groups of connecting blocks through a rotating shaft.

[0011] By adopting the above technical solution, under the transmission and conversion action of the push rod, the vertical moving force of the lifting sleeve can be converted into the water pushing and pulling force on the movable gate frame.

[0012] As an alternative embodiment of the technical solution of the present application, the synchronization mechanism includes a driving bevel gear and a driven bevel gear. A rotating rod is horizontally rotatably installed in the transmission frame through a bearing. Both sides of the outer part of the rotating rod are fixedly sleeved with driving bevel gears. Both sides of the bottom of the transmission frame are vertically penetrated and rotatably installed with fixed rods through bearings, and the bottom of the fixed rod is fixedly connected to the top of the bidirectional lead screw. A driven bevel gear is fixedly sleeved on the top of each fixed rod, and the side of the driven bevel gear meshes with the bottom of the driving bevel gear.

[0013] By adopting the above technical solution, under the meshing transmission action of the driving bevel gear and the driven bevel gear, the horizontal rotational force of the rotating rod can be converted into the vertical rotational force of the bidirectional lead screw.

[0014] As an alternative embodiment of the technical solution of the present application, the rotating mechanism includes a transmission rack and a transmission gear. A connecting rod is horizontally rotatably installed in the hollow frame through a bearing. The transmission gear is fixedly sleeved in the middle of the connecting rod. Sliding grooves are vertically opened at both ends of the side of the hollow frame. The transmission rack is slidably inserted through the sliding grooves, and the side of the transmission rack meshes with the outer side of the transmission gear.

[0015] By adopting the above technical solution, under the meshing transmission action of the transmission gear and the transmission gear, when the fixed gate body moves vertically, the corresponding horizontal pushing and pulling force can be provided to the movable gate frame.

[0016] As an alternative embodiment of the technical solution of the present application, a support plate is fixedly installed at the middle end of the side of the mounting frame. A connecting bolt is screwed through the inner side of the support plate by a thread. A connecting screw hole is formed on the side of the transmission rack close to the support plate, and the number of the connecting screw holes is several groups. The top end of the side of the connecting bolt is screwed into the connecting screw hole by a thread.

[0017] By adopting the above technical solution, by changing the position where the connecting bolt is inserted into the connecting screw holes at different positions, the transmission rack can provide a corresponding horizontal driving force to the movable gate frame, so as to ensure that the two movable gate frames can move a corresponding distance synchronously outside the fixed gate body, and ensure that the overall sealing size of the movable gate frame and the fixed gate body can be applicable to river channels with different inner diameters, further improving the applicability of the overall mechanism to seal the river channel.

[0018] As an alternative embodiment of the technical solution of the present application, limiting chutes are formed at both ends of the side of each fixed frame, and the side of the transmission rod is inserted and slidably penetrated into the limiting chutes.

[0019] By adopting the above technical solution, under the guiding and limiting action of the limiting chutes on the transmission rod, it can be ensured that when the bidirectional lead screw rotates, the lifting sleeve can only move vertically and will not rotate axially therewith.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, movable gate frames capable of horizontal movement are arranged on both sides of a fixed gate body at the bottom of a mounting frame. When a hydraulic cylinder at the top of the mounting frame operates to provide a corresponding vertical driving force to the fixed gate body, it can drive the fixed gate body and the movable gate frames to move vertically synchronously. At the same time, it can synchronously drive a transmission frame and a hollow frame at its top to move vertically synchronously. Furthermore, after driving a transmission gear inside the hollow frame to move vertically synchronously, with the meshing transmission effect of the transmission gear and a transmission rack, when the fixed gate drives the movable gate frames to move vertically, it can provide the transmission gear to rotate synchronously. Then, it drives a connecting rod and a rotating rod connected thereto to rotate synchronously, and drives transmission bevel gears on both sides thereof to rotate synchronously. Subsequently, with the meshing transmission effect of the transmission bevel gears and follower bevel gears, it can provide a synchronous driving force for bidirectional lead screws located on both sides of the fixed gate body, and then drive the bidirectional lead screws to rotate synchronously on both sides of the fixed gate body. With the rotational transmission effect of the bidirectional lead screws on a lifting sleeve, it can drive the lifting sleeve to move vertically and in opposite or relative directions synchronously inside a fixed frame. Subsequently, with a rotating shaft, both ends of a push rod are hinged to the outside of a connecting block respectively. The push rod can convert the vertical movement force of the lifting sleeve into a water body pushing and pulling force on the movable gate frames. Thus, the movable gate frames can move horizontally and in opposite or relative directions outside the fixed gate body along with the vertical movement of the fixed gate body, thereby adjusting the overall sealing and blocking area of the fixed gate body and the movable gate frames, and facilitating the overall contraction of the fixed gate body and the movable gate frames to avoid excessive occupation of external space when lifting and opening the gate, and improving the overall applicability of the gate body.

[0022] 2. By arranging a support plate on the side of the mounting frame and a connecting bolt inside the support plate, after the connecting bolt is screwed into connecting screw holes at different positions on the side of the transmission rack, the transmission distance of the transmission rack can be adjusted adaptively. When the gate body moves vertically, the transmission rack can provide a corresponding horizontal driving force to the movable gate frames, thereby ensuring that the two movable gate frames can move a corresponding distance synchronously outside the fixed gate body, and ensuring that the overall sealing size of the movable gate frames and the fixed gate body can be applicable to river channels with different inner diameters, further improving the applicability of the overall mechanism to block river channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:

[0024] Figure 1 It is a schematic front-side structure diagram of an integrated gate of a hydropower plant according to the present invention;

[0025] Figure 2 It is a schematic rear-side structure diagram of an integrated gate of a hydropower plant according to the present invention;

[0026] Figure 3 This is a front view sectional structure schematic diagram of the transmission frame and the hollow frame of an integrated gate for a hydropower plant according to the present invention;

[0027] Figure 4 This is a front view sectional structure schematic diagram of the fixed frame of an integrated gate for a hydropower plant according to the present invention;

[0028] Figure 5 This is a top view sectional structure schematic diagram of the top of the mounting frame of an integrated gate for a hydropower plant according to the present invention;

[0029] Figure 6 This is a top view structure schematic diagram of the fixed gate body and the movable gate frame of an integrated gate for a hydropower plant according to the present invention.

[0030] In the figure: 1. Mounting frame; 11. Hydraulic cylinder; 12. Fixed gate body; 13. Movable gate frame; 2. Transmission frame; 21. Hollow frame; 22. Fixed frame; 23. Bi-directional lead screw; 24. Lifting sleeve; 25. Transmission rod; 26. Connecting plate; 27. Transmission plate; 28. Connecting block; 29. Pushing rod; 3. Fixed rod; 31. Follow-up bevel gear; 32. Rotating rod; 33. Driving bevel gear; 34. Connecting rod; 35. Transmission gear; 36. Transmission rack; 37. Sliding groove; 4. Support plate; 41. Connecting bolt; 42. Connecting screw hole; 5. Limit sliding groove. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The models of the electrical appliances provided in the present invention are only for reference, and different models of electrical appliances with the same function can be replaced according to actual use situations.

[0034] Please refer toFigure 1-6 , the present invention provides a technical solution: an integrated gate for a hydropower plant. On both sides of the top of the mounting frame 1, hydraulic cylinders 11 are vertically and fixedly installed. Inside the mounting frame 1, a fixed gate body 12 is movably installed, and the bottom of the piston rod of the hydraulic cylinder 11 is fixedly connected to the top of the fixed gate body 12. On both ends of the side of the fixed gate body 12, movable gate frames 13 are slidably installed. In the middle of both sides of the top of the fixed gate body 12, fixed frames 22 are vertically and fixedly installed. In the middle of the top of the fixed gate body 12, a transmission frame 2 is fixedly installed. At the top end of the side of the transmission frame 2, a hollow frame 21 is fixedly installed.

[0035] In this technical solution (as shown by Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , and Figure 6 ), a support plate 4 is fixedly installed in the middle of the side of the mounting frame 1. A connecting bolt 41 is screwed through the inner side of the support plate 4 by threads. On the side of the transmission rack 36 close to the support plate 4, a connecting screw hole 42 is opened, and the number of the connecting screw holes 42 is several groups. The top end of the side of the connecting bolt 41 is screwed into the inner part of the connecting screw hole 42 by threads.

[0036] In this technical solution (as shown by Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , and Figure 6 ), a connecting rod 34 is horizontally rotatably installed inside the hollow frame 21 through a bearing. In the middle of the connecting rod 34, a transmission gear 35 is fixedly sleeved. On both ends of the side of the hollow frame 21, sliding grooves 37 are vertically opened. Inside the sliding grooves 37, transmission racks 36 are slidably inserted through, and the side of the transmission rack 36 is meshed with the outside of the transmission gear 35.

[0037] In this technical solution (as shown by Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , and Figure 6 ), a rotating rod 32 is horizontally rotatably installed inside the transmission frame 2 through a bearing. On both sides of the outside of the rotating rod 32, transmission bevel gears 33 are fixedly sleeved. On both sides of the bottom of the transmission frame 2, fixing rods 3 are vertically rotatably installed through bearings, and the bottom of the fixing rod 3 is fixedly connected to the top of the bidirectional lead screw 23. The fixing rod 3 is rotatably installed inside the transmission frame 2 at the top end inside the fixed frame 22. On the top of each fixing rod 3, a follower bevel gear 31 is fixedly sleeved, and the side of the follower bevel gear 31 is meshed with the bottom of the transmission bevel gear 33.

[0038] In some technical solutions (as shown by Figure 1 , Figure 2 ,Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 5 and Figure 6 , a bidirectional lead screw 23 is vertically rotatably installed in the middle end of each fixed frame 22 through a bearing. A lifting sleeve 24 is movably sleeved on both sides of the outer part of each bidirectional lead screw 23 through threads. Threads with opposite spiral directions are provided on both sides of the outer part of the bidirectional lead screw 23. The inner side wall of the lifting sleeve 24 is provided with threads that are adapted to the reverse spiral of the threads on the outer part of the bidirectional lead screw 23. Transmission rods 25 are fixedly installed at both ends of the outer side of the lifting sleeve 24. Connecting plates 26 are slidably installed on both sides of the outer part of each fixed frame 22, and the top end of the side of the transmission rod 25 is fixedly connected to the outer side of the connecting plate 26. Limit sliding grooves 5 are provided at both ends of the side of each fixed frame 22, and the side of the transmission rod 25 penetrates and is slidably inserted into the inside of the limit sliding groove 5.

[0039] In some technical solutions (as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ), transmission plates 27 are fixedly installed at both ends of the outer side of each movable gate frame 13. Connecting blocks 28 are fixedly installed in the middle of the outer sides of each connecting plate 26 and the transmission plate 27. Push rods 29 are obliquely hinged between the sides of every two groups of connecting blocks 28 through a rotating shaft, and the push rods 29 are movably located outside the movable gate frame 13.

[0040] It should be noted that when it is necessary to block the inside of the water flow channel of a hydropower plant, after the mounting frame 1 is connected to the fixed gate body 12 and the movable gate frame 13 and set outside the channel, according to the inner diameter size of the channel itself, after turning the connecting bolt 41, when it is moved out of the connecting screw hole 42, the transmission rack 36 is pushed to make it horizontally move inside the sliding groove 37. After the transmission rack 36 and the transmission gear 35 are disengaged, the transmission rack 36 is vertically moved to adjust the vertical position of the transmission rack 36 inside the sliding groove 37. After the meshing transmission distance between the transmission rack 36 and the transmission gear 35 is adjusted appropriately, then the connecting bolt 41 is turned to make it inserted into the connecting screw hole 42 at the corresponding position on the side of the transmission rack 36. Then, the hydraulic cylinder 11 is started through an external controller to make it operate and provide for the fixed gate body 12 to vertically descend inside the mounting frame 1. At the same time, the transmission rack 36 moves relatively inside the hollow frame 21. Under the meshing transmission effect of the transmission rack 36 and the transmission gear 35, when the fixed gate drives the movable gate frame 13 to vertically move, it can provide for the transmission gear 35 to rotate synchronously. Then, the connecting rod 34 and the rotating rod 32 connected thereto are driven to rotate synchronously, and the transmission bevel gears 33 on both sides thereof are driven to rotate synchronously. Then, under the meshing transmission effect of the transmission bevel gears 33 and the follower bevel gears 31, synchronous driving force can be provided for the bidirectional lead screws 23 located on both sides of the fixed gate body 12. Thus, the bidirectional lead screws 23 can be driven to rotate synchronously on both sides of the fixed gate body 12. Under the rotational transmission effect of the bidirectional lead screws 23 on the lifting sleeves 24, and then under the guiding and limiting effect of the limiting sliding groove 5 on the transmission rod 25, the lifting sleeves 24 can be driven to move synchronously and vertically towards each other inside the fixed frame 22. Then, by means of the rotating shaft, the two ends of the push rod 29 are respectively hinged to the outside of the connecting block 28. The push rod 29 can convert the vertical moving force of the lifting sleeve 24 into the water pushing force on the movable gate frame 13. Thus, the movable gate frame 13 can horizontally move relatively outside the fixed gate body 12 as the fixed gate body 12 vertically moves. Thus, the overall sealing and blocking area of the fixed gate body 12 and the movable gate frame 13 is adjusted. Until both ends on the outside of the movable gate frame 13 are closely attached to the inner wall of the channel, the movable gate frame 13 and the fixed gate body 12 can block the inside of the channel.

[0041] In addition, the components included in the integrated gate of a hydropower plant according to the present invention are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. At the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the adapted monitoring computer and power supply, are connected through wires. For the specific connection means, reference should be made to the sequence of operations among the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be provided.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0043] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated gate for a hydropower plant, comprising an installation frame (1), characterized in that: On both sides of the top of the mounting frame (1), hydraulic cylinders (11) are vertically and fixedly installed. A fixed brake body (12) is movably installed inside the mounting frame (1), and the bottom of the piston rod of the hydraulic cylinder (11) is fixedly connected to the top of the fixed brake body (12). At both ends of the side of the fixed brake body (12), movable brake frames (13) are slidably installed. In the middle of both sides of the top of the fixed brake body (12), fixed frames (22) are vertically and fixedly installed. In the middle of the top of the fixed brake body (12), a transmission frame (2) is fixedly installed. At the top of the side of the transmission frame (2), a hollow frame (21) is fixedly installed. A bidirectional driving mechanism is arranged inside the fixed frame (22). A conversion mechanism is arranged between the outside of the fixed frame (22) and the movable brake frame (13), and the conversion mechanism is in transmission connection with the bidirectional driving mechanism. A synchronization mechanism is arranged inside the transmission frame (2), and the synchronization mechanism is in transmission connection with the bidirectional driving mechanism. A rotating mechanism is arranged inside the hollow frame (21), and the rotating mechanism is in transmission connection with the synchronization mechanism.

2. The integrated gate of the hydropower plant according to claim 1, characterized in that: The bidirectional driving mechanism includes a bidirectional lead screw (23). In the middle of the inside of each fixed frame (22), the bidirectional lead screw (23) is vertically rotatably installed through a bearing. On both sides of the outside of each bidirectional lead screw (23), lifting sleeves (24) are movably sleeved through threads. At both ends of the outside of the lifting sleeve (24), transmission rods (25) are fixedly installed. On both sides of the outside of each fixed frame (22), connecting plates (26) are slidably installed, and the top of the side of the transmission rod (25) is fixedly connected to the outside of the connecting plate (26).

3. The integrated gate of the hydropower plant according to claim 2, characterized in that: The conversion mechanism includes a push rod (29). At both ends of the outside of each movable brake frame (13), transmission plates (27) are fixedly installed. In the middle of the outside of each connecting plate (26) and the transmission plate (27), connecting blocks (28) are fixedly installed. Between the sides of each two groups of connecting blocks (28), a push rod (29) is obliquely hinged through a rotating shaft.

4. The integrated gate of a hydropower plant according to claim 1, characterized in that: The synchronization mechanism includes transmission bevel gears (33) and follower bevel gears (31). Inside the transmission frame (2), a rotating rod (32) is horizontally rotatably installed through a bearing. On both sides of the outside of the rotating rod (32), transmission bevel gears (33) are fixedly sleeved. At both sides of the bottom of the transmission frame (2), fixed rods (3) are vertically and rotatably installed through bearings, and the bottom of the fixed rod (3) is fixedly connected to the top of the bidirectional lead screw (23). On the top of each fixed rod (3), a follower bevel gear (31) is fixedly sleeved, and the side of the follower bevel gear (31) is meshed with the bottom of the transmission bevel gear (33).

5. The integrated gate of the hydropower plant according to claim 1, characterized in that: The rotating mechanism includes a transmission rack (36) and a transmission gear (35). Inside the hollow frame (21), a connecting rod (34) is horizontally rotatably installed through a bearing. In the middle of the connecting rod (34), a transmission gear (35) is fixedly sleeved. At both ends of the side of the hollow frame (21), sliding grooves (37) are vertically opened. Inside the sliding grooves (37), the transmission rack (36) is inserted through sliding, and the side of the transmission rack (36) is meshed with the outside of the transmission gear (35).

6. The integrated gate of the hydropower plant according to claim 5, characterized in that: A support plate (4) is fixedly installed at the middle end of the side of the mounting frame (1), and a connecting bolt (41) is screwed through the inside of the side of the support plate (4).

7. The integrated gate of a hydropower plant according to claim 6, characterized in that: A connecting screw hole (42) is formed on one side of the transmission rack (36) close to the support plate (4), and the number of the connecting screw holes (42) is several groups. The top end of the side of the connecting bolt (41) is screwed into the inside of the connecting screw hole (42).

8. The integrated gate of the hydropower plant according to claim 2, characterized in that: Limit sliding grooves (5) are formed at both ends of the side of each fixing frame (22), and the side of the transmission rod (25) is inserted into the inside of the limit sliding groove (5) through sliding.

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