Vibration grouting device for water conservancy construction

Abstract

The vibration grouting device for water conservancy construction comprises a base, through holes are formed in the two sides of the top of the base, two rotating shafts are rotatably mounted in the base, vertical rods are slidably mounted in the two through holes, the same mounting plate is fixedly mounted at the top ends of the two vertical rods, and rolling wheels are rotatably mounted at the bottom ends of the two vertical rods; and one ends of the two rotating shafts are fixedly sleeved with chain wheels, the two rotating shafts are fixedly sleeved with striking discs matched with the rolling wheels, the two chain wheels are sleeved with the same chain, and a third motor is fixedly installed on one side of the base. According to the vibration integrated grouting device for hydraulic engineering construction, by combining the functions of mobility, fixity, grout mixing, vibration grouting, reciprocating motion grouting, accurate control and the like, efficient and uniform grouting on a complex stratum is achieved, and the quality and efficiency of grouting operation are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy project construction, in particular to a vibration grouting device for water conservancy construction. Background Art

[0002] In the field of water conservancy project construction, grouting operations are an important part of improving project quality and stability. Traditional grouting devices have many limitations in practical applications and are unable to meet the high requirements for grouting effects in modern water conservancy project construction. Specifically, traditional devices often have the following problems:

[0003] 1. Uneven grouting problem

[0004] When grouting pores and cracks in formations, traditional grouting equipment struggles to ensure uniform grouting due to the complex and irregular structure of the formations. This is primarily due to the lack of effective auxiliary structures to promote even grout distribution. During delivery, grout tends to accumulate in some areas while underfilling others, resulting in suboptimal grouting results and compromising the anti-seepage and reinforcement performance of water conservancy projects.

[0005] 2. Insufficient slurry filling problem

[0006] Traditional grouting systems have a relatively simple discharge structure, typically injecting slurry into the formation through a fixed outlet. This structure often fails to fully fill the pores and cracks in complex formations. This is especially true when the formation contains numerous fine cracks or uneven pore distribution, making it difficult for the slurry to penetrate every area requiring filling, thus reducing the overall grouting quality.

[0007] Based on this, this scheme proposes a vibration grouting device for water conservancy construction. Summary of the Invention

[0008] The purpose of the present invention is to provide a vibration grouting device for water conservancy construction to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vibration grouting device for water conservancy construction, comprising a base, through holes are provided on both sides of the top of the base, and two rotating shafts are rotatably installed in the base, vertical rods are slidably installed in the two through holes, the top ends of the two vertical rods are fixedly installed with the same mounting plate, and the bottom ends of the two vertical rods are rotatably installed with rollers, one end of the two rotating shafts is fixedly sleeved with sprockets, and the two rotating shafts are fixedly sleeved with striking plates adapted to the rollers, the two sprockets are sleeved with the same chain, and one side of the base is fixedly installed with The third motor, the output shaft of the third motor is fixedly connected to the corresponding rotating shaft, the two rotating shafts are respectively located at the eccentric positions of the corresponding striking discs, a fixing plate is fixedly installed on the mounting plate, a first mounting hole and a second mounting hole are provided on the top of the fixing plate, and the first motor is fixedly installed on the fixing plate, a reciprocating screw located in the first mounting hole is fixedly sleeved on the output shaft of the first motor, a mixing box is threadedly sleeved on the reciprocating screw, a feed pipe and a discharge pipe are fixedly installed on the mixing box, an extraction pump is provided on the discharge pipe, and a discharge nozzle is fixedly installed on the bottom end of the discharge pipe.

[0010] Preferably, a second motor is fixedly installed on the top of the mixing box and two round rods are rotatably installed in the mixing box, multiple stirring blades are fixedly installed on the two round rods and the tops of the two round rods are fixedly sleeved with second gears, and the output shaft of the second motor is fixedly sleeved with a first gear that engages with the two second gears at the same time.

[0011] By adopting the above technical solution, by starting the second motor, its output shaft drives the first gear to rotate. Since the first gear is engaged with the two second gears at the same time, the two round rods and stirring blades can be driven to rotate in opposite directions to achieve sufficient mixing of the slurry. This stirring method improves the mixing efficiency, ensures the uniformity of the slurry, and provides high-quality slurry for subsequent grouting operations.

[0012] Preferably, movable wheels are rotatably installed at the four corners of the bottom of the base and support arms are fixedly installed on both sides of the base, locking bolts are threadedly installed on the two support arms, crank handles are fixedly sleeved on the top ends of the two locking bolts and brake plates are rotatably installed on the bottom ends of the two locking bolts.

[0013] By adopting the above technical solution, the design of the movable wheels makes the entire device easy to move between different work locations, thereby improving construction efficiency; when the device needs to be fixed, the locking bolt can be rotated by shaking the handle, so that the brake plate contacts the ground and generates friction, thereby firmly fixing the device, preventing unnecessary movement during work, and ensuring the safety and stability of construction.

[0014] Preferably, a slide rod is fixedly installed in the second mounting hole, and the mixing box is slidably sleeved on the slide rod.

[0015] With the above technical solution, the design of the sliding rod provides a stable guide for the reciprocating movement of the mixing box, ensuring that the mixing box can move smoothly and accurately under the drive of the reciprocating screw; this guiding mechanism improves the accuracy of the grouting operation and helps to achieve a more uniform grouting effect.

[0016] Preferably, a control panel is fixedly mounted on the base.

[0017] Using the above technical solution, the design of the control panel allows operators to easily control the start and stop of each motor and adjust parameters such as the speed, thereby achieving precise control of the entire grouting process; this control method improves the convenience and flexibility of construction, reduces the difficulty of operation, and helps to improve construction efficiency and quality.

[0018] Preferably, return springs are sleeved on the two vertical rods, one end of the two return springs is fixed on the corresponding vertical rod, and the other end of the two return springs is fixed on the inner wall of the corresponding through hole.

[0019] By adopting the above technical solution, the vertical rod can be easily reset by the reset spring.

[0020] Preferably, an L-shaped mounting bracket is fixedly mounted on one side of the second motor, and the bottom end of the L-shaped mounting bracket is fixedly mounted on the top of the mixing box.

[0021] Preferably, a U-shaped frame is fixedly installed at the bottom of the vertical rod, and a rotating bearing is rotatably installed in the U-shaped frame, and the roller is fixedly sleeved on the rotating bearing.

[0022] Preferably, a limit sleeve is movably sleeved on the vertical rod, and connecting rods are fixedly installed on both sides of the limit sleeve, and the connecting rods are fixedly installed on the inner wall of the base.

[0023] Preferably, the reciprocating screw is rotatably mounted in the first mounting hole, one end of the reciprocating screw is rotatably mounted on the inner wall of the first mounting hole, and the other end extends outside the fixed plate and is fixedly connected to the output shaft of the first motor.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Improved grouting uniformity: This invention utilizes an integrated vibration design, with a third motor driving the rotating shaft. This, in turn, uses a chain drive to periodically strike the rollers with two striking discs, driving the mounting plate and discharge nozzles to vibrate up and down. This vibration helps distribute the slurry more evenly when it is delivered to the formation, preventing accumulation in some areas and underfill in others, significantly improving grouting uniformity.

[0026] Second, enhanced slurry filling: The reciprocating screw design in the device allows the mixing box to reciprocate on the mounting plate while the discharge nozzle continuously sprays slurry. Combined with the vibration effect, this reciprocating grouting method can fill the slurry deeper into the pores and cracks of the formation. Especially in the case of formations with many small cracks or uneven pore distribution, it can ensure that the slurry is fully filled in every area that needs to be filled, thereby enhancing the overall grouting quality.

[0027] 3. Improved operational convenience and flexibility: The device is equipped with wheels at the bottom for easy movement between different work locations. Furthermore, by turning the crank handle and rotating the locking bolt, the brake plate contacts the ground, generating friction, thereby securing the device and preventing movement during operation. Furthermore, the control panel design allows the operator to easily control parameters such as starting and stopping each motor and adjusting speed, achieving precise control over the entire grouting process, enhancing operational convenience and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 A bottom perspective view of the present invention;

[0030] Figure 3 A three-dimensional diagram of the internal structure of the base according to the present invention;

[0031] Figure 4 A perspective view of the internal structure of a mixing box according to the present invention;

[0032] Figure 5 This is a schematic diagram of the connection between the first gear and the second gear of the present invention;

[0033] Figure 6 It is a schematic diagram of the vertical rod installation structure of the present invention.

[0034] In the figure: 1. Base; 2. Chain; 3. Moving wheel; 4. Sprocket; 5. Mounting plate; 6. Mixing box; 7. Extraction pump; 8. Discharge pipe; 9. Discharge nozzle; 10. Feed pipe; 11. Fixed plate; 12. Crank handle; 13. Brake plate; 14. Locking bolt; 15. Control panel; 16. First motor; 17. Reciprocating screw; 18. Sliding rod; 19. Vertical rod; 20. Return spring; 21. Rotating shaft; 22. Beating plate; 23. Roller; 24. Support arm; 25. Second motor; 26. Stirring blade; 27. First gear; 28. Second gear; 29. Round rod; 30. Third motor; 31. L-shaped mounting frame; 31. L-shaped mounting frame; 32. U-shaped frame; 33. Rotating bearing; 34. Limit sleeve; 35. Connecting rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-6 The present invention provides a technical solution: a vibration grouting device for water conservancy construction, comprising a base 1, through holes are opened on both sides of the top of the base 1, and two rotating shafts 21 are rotatably installed in the base 1, vertical rods 19 are slidably installed in the two through holes, the tops of the two vertical rods 19 are fixedly installed with the same mounting plate 5, and the bottom ends of the two vertical rods 19 are rotatably installed with rollers 23, one end of the two rotating shafts 21 are fixedly sleeved with sprockets 4, and the two rotating shafts 21 are fixedly sleeved with striking disks 22 adapted to the rollers 23, the two sprockets 4 are sleeved with the same chain 2, a third motor 30 is fixedly installed on one side of the base 1, the output shaft of the third motor 30 is fixedly connected to the corresponding rotating shaft 21, the two rotating shafts 21 are respectively located at the eccentricity of the corresponding striking disk 22, and are installed. A fixed plate 11 is fixedly installed on the plate 5, and a first mounting hole and a second mounting hole are provided on the top of the fixed plate 11, and a first motor 16 is fixedly installed on the fixed plate 11, and a reciprocating screw 17 located in the first mounting hole is fixedly sleeved on the output shaft of the first motor 16, and a mixing box 6 is threadedly sleeved on the reciprocating screw 17, and a feed pipe 10 and a discharge pipe 8 are fixedly installed on the mixing box 6, and an extraction pump 7 is provided on the discharge pipe 8, and a discharge nozzle 9 is fixedly installed on the bottom end of the discharge pipe 8, and a slide rod 18 is fixedly installed in the second mounting hole, and the mixing box 6 is slidably sleeved on the slide rod 18, and two vertical rods 19 are sleeved with return springs 20, one end of the two return springs 20 is fixed on the corresponding vertical rod 19, and the other end of the two return springs 20 is fixed on the inner wall of the corresponding through hole.

[0037] During the implementation of this embodiment: the base 1 serves as the supporting foundation of the entire device, and through holes are provided on both sides of the top of the base 1 for installing the vertical rod 19 and realizing its sliding function. Two rotating shafts 21 are rotatably installed in the base 1 to drive the striking disk 22 to rotate; the two rotating shafts 21 are respectively located on both sides of the base 1, and one end of the two rotating shafts 21 is fixedly sleeved with a sprocket 4, and the two sprockets 4 are connected by a chain 2 to form a transmission system; when the third motor 30 is started, its output shaft drives one rotating shaft 21 to rotate, and then drives the synchronous rotation of the other rotating shaft 21 through the chain 2; the striking disk 22 is fixedly sleeved on the rotating shaft 21 and is located below the roller 23. When the rotating shaft 21 rotates, the striking disk 22 will periodically hit the roller 23 to produce a vibration effect. The roller 23 is installed at the bottom of the vertical rod 19 The end cooperates with the striking disc 22 to realize the vibration function; the vertical rod 19 is slidably installed in the through hole of the base 1, and its top is fixedly connected to the mounting plate 5. The return spring 20 is sleeved on the vertical rod 19, and the return spring 20 plays a reset role; the mounting plate 5 is fixedly connected to the top of the vertical rod 19 for installing components such as the mixing box 6. The fixed plate 11 is installed on the mounting plate 5, and a first mounting hole and a second mounting hole are opened to install the reciprocating screw 17 and the sliding rod 18. The output shaft of the first motor 16 drives the reciprocating screw 17 to rotate, and the mixing box 6 is threadedly sleeved on the reciprocating screw 17. When the reciprocating wire 17 rotates, the mixing box 6 will reciprocate left and right in the horizontal direction to achieve uniform distribution of grouting. The feed pipe 10 is used to add grouting material to the mixing box 6. The discharge pipe 8 is connected to the extraction pump 7 and the discharge nozzle 9. When the extraction pump 7 is started, the slurry will be extracted and evenly sprayed in the formation through the discharge nozzle 9.

[0038] Combine Figure 1-6 As shown, in this embodiment, a second motor 25 is fixedly installed on the top of the mixing box 6 and two round rods 29 are rotatably installed in the mixing box 6, a plurality of stirring blades 26 are fixedly installed on the two round rods 29 and the tops of the two round rods 29 are fixedly sleeved with a second gear 28, and a first gear 27 that is simultaneously meshed with the two second gears 28 is fixedly sleeved on the output shaft of the second motor 25.

[0039] During implementation of this embodiment, the stirring system of the mixing box 6 realizes a bidirectional stirring function through gear meshing transmission. When the second motor 25 is started, its output shaft drives the first gear 27 to rotate. Since the first gear 27 is simultaneously engaged with the two second gears 28, the two round rods 29 and the stirring blades 26 on the two round rods 29 are driven to rotate synchronously, which can effectively destroy the agglomerated particles in the slurry and improve the micro-uniformity. The stirring system is particularly suitable for the uniform mixing requirements of high-viscosity slurries.

[0040] Combine Figure 1-6As shown, in this embodiment, the four corners of the bottom of the base 1 are rotatably mounted with moving wheels 3 and support arms 24 are fixedly mounted on both sides of the base 1, and locking bolts 14 are threadedly mounted on the two support arms 24, the top ends of the two locking bolts 14 are fixedly sleeved with crank handles 12 and the bottom ends of the two locking bolts 14 are rotatably mounted with brake plates 13.

[0041] During the implementation of this embodiment: the movement and fixation system of the base 1 realizes a quick switching function through mechanical linkage. When the device needs to be moved, the four moving wheels 3 can rotate freely, so that the entire equipment has flexible mobility; when it needs to be fixed, the operator drives the locking bolt 14 downward by rotating the crank 12, so that the brake plate 13 forms pressure contact with the ground. In this design, the brake plate 13 adopts a rotating installation method, which can adapt to the unevenness of the ground to ensure that the contact surface is evenly stressed. The threaded transmission structure maintains a constant clamping force through the mechanical self-locking characteristics to avoid accidental displacement during operation. The symmetrical arrangement of the support arm 24 enhances the structural stability, so that the equipment remains in a horizontal state during vibration grouting operation. The entire system does not require electric drive. The pure mechanical structure not only ensures reliability, but also adapts to the complex working conditions at the water conservancy project site.

[0042] Combine Figure 1-6 As shown, in this embodiment, a control panel 15 is fixedly mounted on the base 1 .

[0043] During the implementation of this embodiment: the control panel 15 is integrated in a prominent position of the base 1 as the human-machine interaction hub, and is designed with an IP65 protection grade to adapt to the on-site environment of water conservancy projects. The control panel 15 has a built-in PLC control system, which is hard-wired to form a linkage with each motor: the first motor 16 / the second motor 25 / the third motor 30, and the extraction pump 7 to achieve the following core functions: vibration frequency adjustment, through the frequency conversion control of the third motor 30; stirring speed grading, controlling the speed of the second motor 25; grouting flow setting, adjusting the power of the extraction pump 7; motion trajectory programming, setting the stroke parameters of the reciprocating screw 17. The control logic adopts a modular design, supports manual / automatic mode switching, and automatically triggers emergency stop protection in abnormal conditions. The operation interface is equipped with a 7-inch touch screen and physical buttons for dual control, and complies with the EN60529 dust and water resistance standard. This design significantly improves the controllability and operation accuracy of the construction process.

[0044] In the present invention, an L-shaped mounting bracket 31 is fixedly mounted on one side of the second motor 25 , and the bottom end of the L-shaped mounting bracket 31 is fixedly mounted on the top of the mixing box 6 .

[0045] In the present invention, a U-shaped frame 32 is fixedly installed at the bottom of the vertical rod 19 , and a rotating bearing 33 is rotatably installed in the U-shaped frame 32 , and the roller 23 is fixedly sleeved on the rotating bearing 33 .

[0046] In the present invention, a limit sleeve 34 is movably sleeved on the vertical rod 19 , and connecting rods 35 are fixedly installed on both sides of the limit sleeve 34 . The connecting rods 35 are fixedly installed on the inner wall of the base 1 .

[0047] In the present invention, the reciprocating screw rod 17 is rotatably mounted in the first mounting hole, one end of the reciprocating screw rod 17 is rotatably mounted on the inner wall of the first mounting hole, and the other end extends outside the fixed plate 11 and is fixedly connected to the output shaft of the first motor 16.

[0048] The present invention:

[0049] The device is equipped with moving wheels 3 at the four corners of the bottom, making it easy to move the entire device between different work locations; when the device needs to be fixed, the locking bolt 14 can be rotated by shaking the handle 12, so that the brake plate 13 contacts the ground and generates friction, thereby fixing the device to prevent movement during work.

[0050] Slurry mixing: Add the slurry raw materials to be mixed into the mixing box 6 through the feed pipe 10, start the second motor 25, and its output shaft drives the first gear 27 to rotate. Since the first gear 27 is engaged with the two second gears 28 at the same time, the two second gears 28 will drive the corresponding round rods 29 and stirring blades 26 to rotate, thereby achieving sufficient mixing of the slurry.

[0051] Vibration grouting: Start the third motor 30, and its output shaft drives one rotating shaft 21 to rotate. Through the chain 2, the other rotating shaft 21 rotates synchronously. Since the two rotating shafts 21 are located at the eccentric positions of the corresponding striking discs 22, the rotating striking discs 22 will periodically strike the roller 23. The roller 23 drives the mounting plate 5 to vibrate up and down through the vertical rod 19. The return spring 20 plays a buffering and reset role, ensuring the continuity and stability of the vibration. The evenly mixed slurry is extracted by the extraction pump 7 through the discharge pipe 8 and sprayed out through the discharge nozzle 9 for grouting. Due to the vibration of the mounting plate 5, the discharge nozzle 9 will also vibrate, which helps the slurry to be more evenly filled into the pores and cracks of the formation.

[0052] Reciprocating grouting: Start the first motor 16, and its output shaft drives the reciprocating screw 17 to rotate. Since the mixing box 6 is threadedly connected to the reciprocating screw 17 and guided by the slide rod 18, the mixing box 6 reciprocates along the slide rod 18 under the drive of the reciprocating screw 17. During this process, the discharge nozzle 9 continuously sprays slurry and vibrates, achieving uniform grouting over a wider range.

[0053] The device is provided with a control panel 15, through which the operator can control the start and stop of each motor and adjust parameters such as the rotation speed, thereby achieving precise control over the entire grouting process.

[0054] In summary, the vibration-integrated grouting device for water conservancy project construction of the present invention achieves efficient and uniform grouting of complex formations by combining functions such as mobility, fixity, slurry mixing, vibration grouting, reciprocating grouting and precise control, thereby improving the quality and efficiency of grouting operations.

[0055] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration grouting device for water conservancy construction, comprising a base (1), characterized in that: Through holes are provided on both sides of the top of the base (1), and two rotating shafts (21) are rotatably mounted in the base (1), and vertical rods (19) are slidably mounted in the two through holes. The top ends of the two vertical rods (19) are fixedly mounted with a same mounting plate (5), and the bottom ends of the two vertical rods (19) are rotatably mounted with rollers (23), one end of the two rotating shafts (21) is fixedly sleeved with a sprocket (4), and a striking plate (22) adapted to the roller (23) is fixedly sleeved on the two rotating shafts (21), and the same chain (2) is sleeved on the two sprockets (4); A third motor (30) is fixedly mounted on one side of the base (1), and an output shaft of the third motor (30) is fixedly connected to a corresponding rotating shaft (21). The two rotating shafts (21) are respectively located at eccentric positions of the corresponding striking discs (22). A fixing plate (11) is fixedly mounted on the mounting plate (5), a first mounting hole and a second mounting hole are provided on the top of the fixing plate (11), and a first motor (16) is fixedly mounted on the fixing plate (11). A reciprocating screw (17) located in the first mounting hole is fixedly sleeved on the output shaft of the first motor (16), a mixing box (6) is threadedly sleeved on the reciprocating screw (17), a feed pipe (10) and a discharge pipe (8) are fixedly mounted on the mixing box (6), an extraction pump (7) is provided on the discharge pipe (8), and a discharge nozzle (9) is fixedly mounted on the bottom end of the discharge pipe (8).

2. A vibration grouting device for water conservancy construction according to claim 1, characterized in that: A second motor (25) is fixedly mounted on the top of the mixing box (6), and two round rods (29) are rotatably mounted in the mixing box (6). A plurality of stirring blades (26) are fixedly mounted on the two round rods (29), and a second gear (28) is fixedly sleeved on the top of the two round rods (29). A first gear (27) that meshes with the two second gears (28) is fixedly sleeved on the output shaft of the second motor (25).

3. A vibration grouting device for water conservancy construction according to claim 1, characterized in that: The four corners of the bottom of the base (1) are all rotatably mounted with moving wheels (3) and both sides of the base (1) are fixedly mounted with support arms (24), and the two support arms (24) are both threadedly mounted with locking bolts (14), the top ends of the two locking bolts (14) are both fixedly sleeved with cranks (12) and the bottom ends of the two locking bolts (14) are both rotatably mounted with brake plates (13).

4. A vibration grouting device for water conservancy construction according to claim 1, characterized in that: A slide rod (18) is fixedly installed in the second mounting hole, and the mixing box (6) is slidably sleeved on the slide rod (18).

5. The vibration grouting device for water conservancy construction according to claim 1, characterized in that: A control panel (15) is fixedly mounted on the base (1).

6. A vibration grouting device for water conservancy construction according to claim 1, characterized in that: The two vertical rods (19) are both sleeved with a return spring (20), one end of the two return springs (20) is fixed on the corresponding vertical rod (19), and the other end of the two return springs (20) is fixed on the inner wall of the corresponding through hole.

7. The vibration grouting device for water conservancy construction according to claim 2, characterized in that: An L-shaped mounting frame (31) is fixedly mounted on one side of the second motor (25), and the bottom end of the L-shaped mounting frame (31) is fixedly mounted on the top of the mixing box (6).

8. The vibration grouting device for water conservancy construction according to claim 1, characterized in that: A U-shaped frame (32) is fixedly mounted on the bottom of the vertical rod (19), and a rotating bearing (33) is rotatably mounted in the U-shaped frame (32), and the roller (23) is fixedly sleeved on the rotating bearing (33).

9. The vibration grouting device for water conservancy construction according to claim 1, characterized in that: The vertical rod (19) is movably sleeved with a limit sleeve (34), and connecting rods (35) are fixedly mounted on both sides of the limit sleeve (34), and the connecting rods (35) are fixedly mounted on the inner wall of the base (1).

10. The vibration grouting device for water conservancy construction according to claim 1, characterized in that: The reciprocating screw rod (17) is rotatably mounted in the first mounting hole, one end of the reciprocating screw rod (17) is rotatably mounted on the inner wall of the first mounting hole, and the other end extends outside the fixed plate (11) and is fixedly connected to the output shaft of the first motor (16).

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