A motor quick mounting base

Abstract

The application discloses a motor quick mounting base, which comprises a sliding channel, a mounting base with a damping pad fixed at the bottom, an elastic clamping piece for fixing the motor mounted on the sliding channel, an X-axis clamping mechanism and a Y-axis clamping mechanism, the X-axis clamping mechanism comprises a T-shaped rod fixed to the inner wall of one side of the sliding channel and a sliding block slidingly connected to the outer wall of the T-shaped rod, the spring sleeved on the outer wall of the T-shaped rod is fixed to the outer wall of one side of the sliding block and the inner wall of one side of the sliding channel respectively, and the Y-axis clamping mechanism comprises a limiting guide rod fixed to the side surface of the sliding block and a sliding block slidingly connected to the outer wall of the limiting guide rod. Through the cooperation of the X-axis and Y-axis bidirectional elastic clamping mechanisms, the outer expansion type positioning seat is driven by the sliding block and the sliding block driven by the spring, different sizes of motor bases can be automatically adapted, the clamp does not need to be replaced or complicated adjustment is needed, and the universality and operation efficiency of the motor installation are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of motor mounting base technology, and in particular to a quick-mount motor mounting base. Background Technology

[0002] As a core power device in industrial production, electric motors are widely used in various types of mechanical equipment. During the installation process of electric motors, the stability of the mounting base, the vibration reduction performance, and the installation efficiency directly affect the operating accuracy and service life of the equipment.

[0003] Existing motor mounting bases mostly use bolts to rigidly lock the motor base directly to the foundation platform or bracket. Since the length, width and mounting hole spacing of the bases of different specifications and models of motors often vary, the positioning holes of traditional bases are usually fixed openings of a single specification, which is difficult to adapt to the diverse motor installation needs. Once a non-standard or significantly different motor is replaced, it is often necessary to re-mark, drill, or even machine the entire base. This is not only cumbersome and time-consuming, but also seriously restricts the efficiency of equipment maintenance and the flexible production capacity of the production line.

[0004] Therefore, developing a quick-installation motor base that can adapt to different specifications of motor bases has become an urgent technical problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-mounting base for motors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick-mounting base for a motor includes a slide rail and a mounting base with a vibration damping pad fixed to its bottom. The slide rail is equipped with elastic clips for securing the motor. The elastic clips include an X-axis locking mechanism and a Y-axis locking mechanism. The X-axis locking mechanism includes a T-shaped rod fixed to the inner wall of one side of the slide rail and a slider slidably connected to the outer wall of the T-shaped rod. A spring sleeved on the outer wall of the T-shaped rod has its two ends fixed to the outer wall of one side of the slider and the inner wall of one side of the slide rail, respectively. The Y-axis locking mechanism includes a limiting guide rod fixed to the side of the slider and a sliding block slidably connected to the outer wall of the limiting guide rod. A spring sleeved on the outer wall of the limiting guide rod has its two ends fixed to the outer wall of one side of the sliding block and the inner wall of one side of the limiting guide rod, respectively. An outwardly expanding positioning seat is fixed to the top outer wall of the sliding block.

[0007] As a further embodiment of the present invention: a waist-shaped plate 1 is welded to the side of the outwardly expanding positioning seat, a waist-shaped plate 3 is welded to the side of the slide rail, a waist-shaped plate 2 is welded to one end of the limiting guide rod, and the waist-shaped plate 1, waist-shaped plate 2 and waist-shaped plate 3 are fixed together by a locking mechanism.

[0008] As a further embodiment of the present invention: the locking mechanism includes a threaded locking element and a locking nut that is threadedly connected to the outer circumference of the threaded locking element.

[0009] As a further embodiment of the present invention: a connecting seat is welded to the top outer wall of the mounting base, and a mounting shaft is rotatably connected to the through holes on both sides of the connecting seat. The slide is fixed to the outer circumference of the mounting shaft, and a limiting rod is inserted into the insertion hole on the side of the mounting shaft.

[0010] As a further embodiment of the present invention: the limiting rod includes an insert rod with ribs integrally formed on the outer circumference, and abutment plates and threaded columns fixed at its ends. The top outer wall of the mounting base is respectively fixed with upright plate one and upright plate two. The outer circumference of the threaded column is threaded with a locking nut two for locking the limiting rod, upright plate one and upright plate two together.

[0011] As a further embodiment of the present invention: the surface of the first upright plate is provided with a first insertion hole adapted to the outer diameter of the insertion rod, and the surface of the second upright plate is provided with a second insertion hole adapted to the outer diameter of the threaded column. By passing the insertion rod of the limiting rod through the first insertion hole of the first upright plate, the insertion hole on the side of the mounting shaft, and the second insertion hole of the second upright plate in sequence, and then tightening the second locking nut on the threaded column, the limiting rod, the first upright plate, and the second upright plate are locked.

[0012] As a further embodiment of the present invention: a top plate is fixed to the bottom outer wall of the waist-shaped plate, an internally threaded sleeve is fixed to the top outer wall of the mounting base, and an externally threaded rod is threaded to the inner circumference of the internally threaded sleeve.

[0013] As a further embodiment of the present invention: both the mounting base and the vibration damping pad are provided with fixing holes for installation. The fixing holes are provided through the mounting base and the vibration damping pad, allowing anchor bolts or expansion bolts to pass through and anchor both of them to the preset foundation.

[0014] As a further embodiment of the present invention, the internal threaded sleeve, the external threaded rod and the top plate are replaced with a telescopic mechanism, the telescopic mechanism including an electric telescopic rod and a connecting part one and a connecting part two installed at its ends.

[0015] As a further embodiment of the present invention: the first connector includes a bracket fixed to the side of the slide and a connecting block rotatably connected between the two sides of the bracket, the output end of the electric telescopic rod is fixedly connected to the connecting block 1, the second connector includes a connecting block 2 fixed to the top outer wall of the mounting base and a bracket 2 rotatably connected between the two sides of the connecting block 2, the tail end of the electric telescopic rod is fixedly connected to the bracket 2.

[0016] Compared with the prior art, the present invention provides a quick-mounting base for motors, which has the following advantages: 1. Through the cooperation of the bidirectional elastic locking mechanism of the X-axis and Y-axis, the spring-driven slider and sliding block drive the outward expansion positioning seat, which can automatically adapt to motor bases of different sizes and specifications without the need to change the clamps or make cumbersome adjustments, significantly improving the versatility of motor installation and work efficiency.

[0017] 2. By rotating the mounting shaft to adjust the tilt angle of the slide, and with the help of a level to monitor and the external threaded rod to push the top plate for fine adjustment, the slide and motor can be accurately leveled. Then, the ribbed insert rod is passed through the vertical plate and the mounting shaft insertion hole and the locking nut is tightened. The fit between the rib and the hole wall achieves anti-torsion locking, effectively preventing angle deviation under vibration.

[0018] 3. By introducing an electric telescopic rod to replace manual threaded adjustment, and combined with the feedback signal from the level sensor, the control system can drive the electric telescopic rod to automatically push and pull the slide to adjust the angle and maintain it by self-locking, thus realizing the rapid, precise and automated leveling of the motor mounting base.

[0019] 4. By utilizing the overlapping and cooperation of waist-shaped plate one, waist-shaped plate two, and waist-shaped plate three, combined with the fastening effect of threaded locking parts and locking nut one, the slider and sliding block can be rigidly locked in the X and Y directions after the elastic clamp self-adjusts and clamps the motor base. This effectively prevents the elastic clamp from loosening or shifting under the vibration environment generated by the motor operation, ensuring the stability and safety of the motor base connection.

[0020] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a motor quick-mount base proposed in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the main structure of a motor quick-mounting base proposed in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the overall structure of the elastic clip of the quick-mounting base for a motor according to Embodiment 1 of the present invention; Figure 4 This is an exploded view of the elastic clip structure of a motor quick-mount base proposed in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the limiting rod installation structure of a motor quick-installation base according to Embodiment 1 of the present invention; Figure 6 This is a magnified view of point A; Figure 7 This is a magnified view of point B; Figure 8 This is a schematic diagram of the structure of a quick-mounting motor base proposed in Embodiment 2 of the present invention.

[0022] In the diagram: Mounting base 1; Fixing hole 2; Vibration damping pad 3; Connecting base 4; Mounting motor 5; Waist-shaped plate 1; Waist-shaped plate 2; T-shaped rod 8; Threaded locking part 9; Internal threaded sleeve 10; Slider 11; Limiting guide rod 12; Spring 13; Sliding block 14; Outwardly expanding positioning seat 15; Waist-shaped plate 3 16; Spring 2 17; Locking nut 18; Electric telescopic rod 19; Mounting shaft 20; External threaded rod 21; Top plate 22; Slide rail 23; Contact plate 24; Vertical plate 1 25; Insert rod 26; Locking nut 2 27; Vertical plate 2 28; Threaded column 29; Bracket 1 30; Connecting block 1 31; Bracket 2 32; Connecting block 2 33. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] In addition, the term "multiple" should mean two or more.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0029] A quick-mount motor base, such as Figures 1 to 7 As shown, the mounting base 1 includes a vibration damping pad 3 fixed at its bottom. A connecting seat 4 is welded to the top outer wall of the mounting base 1. A mounting shaft 20 is rotatably connected to through holes on both sides of the connecting seat 4. A slide rail 23 is fixed to the outer circumference of the mounting shaft 20. An elastic clip for fixing the mounting motor 5 is installed on the slide rail 23. A limiting rod is inserted into a hole on the side of the mounting shaft 20. The limiting rod is a three-section rod, including a ribbed outer circumference integrally formed section. The mounting base 1 has a first upright plate 25 and a second upright plate 28 fixed to its top outer wall by screws. The first upright plate 25 has a first insertion hole that matches the outer diameter of the insert rod 26. The second upright plate 28 has a second insertion hole that matches the outer diameter of the threaded post 29. The outer wall of the threaded post 29 is threaded with a second locking nut 27 for locking the limiting rod, the first upright plate 25 and the second upright plate 28. Rotating the mounting shaft 20 can adjust the slide rail 23 to the required angle. After the mounting base 1 is fixed, the slide rail 23 needs to be leveled relative to the horizontal plane. A graduated level can be set on the side of the mounting base 1 or on the connecting base 4, or a bubble level can be placed on the slide rail 23 to monitor the tilt angle in real time. After rotating the mounting shaft 20 until the level indicator on the slide rail 23 is zeroed or aligned with the preset scale, the insertion rod 26 of the limiting rod is passed through the insertion hole 1 of the vertical plate 25, the insertion hole on the side of the mounting shaft 20, and the vertical plate in sequence. The second insertion hole of the second 28 is connected to the inner wall of the insertion rod 26 to prevent relative rotation. Then, tighten the locking nut 27 on the threaded column 29 to lock the limiting rod, the first upright plate 25 and the second upright plate 28, and limit the rotation angle of the mounting shaft 20. At the same time, an elastic washer or a nylon locking nut can be added to the contact surface of the locking nut 27 to increase the friction of the thread pair and prevent the locking nut 27 from loosening under vibration. Together with the mounting base 1 with the bottom damping pad 3, the angle of the motor 5 can be adjusted for vibration damping. The elastic locking mechanism includes an X-axis locking mechanism and a Y-axis locking mechanism. The X-axis locking mechanism includes a T-shaped rod 8 fixed to the inner wall of one side of the slide rail 23 and a slider 11 slidably connected to the outer wall of the T-shaped rod 8. The two ends of the spring 13 sleeved on the outer wall of the T-shaped rod 8 are respectively fixed to the outer wall of one side of the slider 11 and the inner wall of one side of the slide rail 23. The Y-axis locking mechanism includes a limiting guide rod 12 fixed to the side of the slider 11 and a sliding block 14 slidably connected to the outer wall of the limiting guide rod 12. The two ends of the spring 17 sleeved on the outer wall of the limiting guide rod 12 are respectively fixed to the outer wall of one side of the sliding block 14 and the inner wall of one side of the limiting guide rod 12. The top outer wall of the sliding block 14 is fixed with an expanded positioning seat 15 for limiting the mounting of the motor 5 base by screws. When it is necessary to fix motors 5 of different specifications, first place the base of motor 5 against the inner wall of the outwardly expanded positioning seat 15, push the sliding block 14 along the Y-axis to compress the second spring 17, so that the positioning seat 15 adaptively clamps the width direction of the motor base; at the same time, the slider 11 is pushed along the T-shaped rod 8 and compresses the first spring 13, automatically adapting to the length direction dimension of the motor 5 base. Using the elastic force of the first spring 13 and the second spring 17, the motor 5 bases of different length and width specifications are clamped from both the X-axis and Y-axis, improving the efficiency of installing motor 5.

[0030] The outer expansion positioning seat 15 has a waist-shaped plate 6 welded to its side, the slide rail 23 has a waist-shaped plate 16 welded to its side, and the limiting guide rod 12 has a waist-shaped plate 7 welded to one end. The waist-shaped plate 6, the waist-shaped plate 7, and the waist-shaped plate 16 are fixed together by a locking mechanism. The locking mechanism includes a threaded locking member 9 and a locking nut 18 threaded to the outer circumference of the threaded locking member 9. After adjusting the positions of slider 11 and sliding block 14, threaded locking piece 9 is passed through the waist-shaped holes on waist-shaped plate 1 6, waist-shaped plate 2 7 and waist-shaped plate 3 16 in sequence, and the locking nut 18 on its outer circumference is tightened to lock waist-shaped plate 1 6 relative to waist-shaped plate 2 7 and waist-shaped plate 3 16, fixing the X-direction position of slider 11 on T-shaped rod 8 and the Y-direction position of sliding block 14 on limit guide rod 12, preventing the elastic clip from loosening due to vibration, and realizing the locking of motor 5 base; To prevent loosening between the threaded locking part 9 and the locking nut 18, an elastic washer can be added to the contact surface between the locking nut 18 and the waist-shaped plate 16, or a nylon locking nut can be used to increase the friction of the threaded pair. At the same time, a cotter pin or a double nut anti-loosening structure can be used at the end of the threaded locking part 9 to prevent the nut from rotating and the locking part from moving.

[0031] The bottom outer wall of the waist-shaped plate 16 is fixed with a top plate 22 by screws, and the top outer wall of the mounting base 1 is fixed with an internal threaded sleeve 10 by screws. The inner circumference of the internal threaded sleeve 10 is threaded with an external threaded rod 21. To improve leveling efficiency, first place a level on the slide rail 23 to monitor the tilt angle. After coarsely adjusting the angle by rotating the mounting shaft 20, insert the limiting rod for pre-fixing. Rotate the external thread rod 21 to spirally rise and fall within the internal thread sleeve 10, so that its top pushes the top plate 22 at the bottom of the waist-shaped plate 3 16. Finely adjust the side tilt angle of the slide rail 23 and the connecting seat 4 until the level returns to zero or is aligned with the preset scale. Then tighten the locking nut 27 to lock the mounting shaft 20 and tighten the locking nut 18 of the threaded locking piece 9 to fix the slide rail 23.

[0032] The mounting base 1 and the vibration damping pad 3 are both provided with fixing holes 2 for installation; When fixing the mounting base 1, the vibration damping pad 3 is attached to the preset mounting base surface, so that the fixing holes 2 on the surfaces of the two are aligned and coaxial. The appropriate anchor bolts or expansion bolts are passed through the fixing holes 2 of the vibration damping pad 3 and the mounting base 1 in sequence and inserted into the base. Tighten the bolt heads or the matching nuts to compress the vibration damping pad 3 appropriately to generate pre-tight sealing and buffer pre-pressure, so that the mounting base 1 and the vibration damping pad 3 are rigidly anchored to the base surface.

[0033] Working principle: First, the mounting base 1 with vibration damping pad 3 is anchored to the foundation surface using anchor bolts through the fixing hole 2. Then, by monitoring the level on the slide rail 23, the mounting shaft 20 is rotated to coarsely adjust the tilt angle. Then, the external threaded rod 21 is rotated to push the top plate 22 to finely adjust the slide rail 23 to be horizontal. The ribbed insert rod 26 is passed through the first upright plate 25, the mounting shaft 20 and the second upright plate 28 in sequence. The second locking nut 27 is tightened to lock the angle using the preload and the anti-torsion effect of the ribs, thus achieving leveling of the slide rail 23. Then, the first spring 13 and the second spring 17 drive the slider 11 and the sliding block 14 to drive the outwardly expanding positioning seat 15 to clamp the base of the motor 5 of different specifications in both directions of the X and Y axes. Finally, the locking nut 18 on the threaded locking part 9 is tightened to lock the waist plate 6, waist plate 7 and waist plate 3 16 to prevent loosening. Example

[0034] A quick-mount motor base, designed to improve the speed of leveling during motor installation, such as... Figure 8 As shown, this embodiment makes the following improvements based on embodiment 1: the internal threaded sleeve 10, external threaded rod 21 and top plate 22 are replaced with a telescopic mechanism. The telescopic mechanism includes an electric telescopic rod 19 and a first connector and a second connector installed at its ends. The first connector includes a bracket 30 fixed to the side of the slide rail 23 by screws and a connecting block 31 rotatably connected between the two sides of the bracket 30. The output end of the electric telescopic rod 19 is fixedly connected to the first connector 31. The second connector includes a second connector 33 fixed to the top outer wall of the mounting base 1 by screws and a second bracket 32 ​​rotatably connected between the two sides of the second connector 33. The tail end of the electric telescopic rod 19 is fixedly connected to the second bracket 32. When leveling, a horizontal sensor can be placed on the slide rail 23 to provide feedback on the tilt angle signal. The control system does not draw the output end of the drive electric telescopic rod 19 to extend or retract. Pushing and pulling the slide rail 23 and the mounting shaft 20 slightly rotates relative to the connecting seat 4 until the horizontal feedback value returns to zero. The self-locking of the electric telescopic rod 19 is used to maintain the leveling state, which replaces the manual adjustment of the external thread rod 21 to achieve fast and accurate automatic leveling.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A quick-mount base for a motor, comprising a slide rail (23) and a mounting base (1) with a vibration damping pad (3) fixed to its bottom, characterized in that, The slide rail (23) is equipped with an elastic clamp for fixing the motor (5). The elastic clamp includes an X-axis clamping mechanism and a Y-axis clamping mechanism. The X-axis clamping mechanism includes a T-shaped rod (8) fixed to the inner wall of one side of the slide rail (23) and a slider (11) slidably connected to the outer wall of the T-shaped rod (8). The two ends of the spring one (13) sleeved on the outer wall of the T-shaped rod (8) are respectively fixed to the outer wall of one side of the slider (11) and the inner wall of one side of the slide rail (23). The Y-axis clamping mechanism includes a limiting guide rod (12) fixed to the side of the slider (11) and a sliding block (14) slidably connected to the outer wall of the limiting guide rod (12). The two ends of the spring two (17) sleeved on the outer wall of the limiting guide rod (12) are respectively fixed to the outer wall of one side of the sliding block (14) and the inner wall of one side of the limiting guide rod (12). The top outer wall of the sliding block (14) is fixed with an outwardly expanding positioning seat (15).

2. The quick-installation base for a motor according to claim 1, characterized in that, The outer expansion positioning seat (15) has a waist-shaped plate one (6) welded to its side, the slide rail (23) has a waist-shaped plate three (16) welded to its side, and the limiting guide rod (12) has a waist-shaped plate two (7) welded to one end. The waist-shaped plate one (6), waist-shaped plate two (7) and waist-shaped plate three (16) are fixed together by a locking mechanism.

3. The quick-installation base for a motor according to claim 2, characterized in that, The locking mechanism includes a threaded locking element (9) and a locking nut (18) threaded to the outer circumference of the threaded locking element (9).

4. The quick-mounting base for a motor according to claim 1, characterized in that, The mounting base (1) has a connecting seat (4) welded to its top outer wall. The connecting seat (4) has through holes on both sides that are rotatably connected to the mounting shaft (20). The slide (23) is fixed to the outer circumference of the mounting shaft (20). A limiting rod is inserted into the insertion hole on the side of the mounting shaft (20).

5. A quick-mount motor base according to claim 4, characterized in that, The limiting rod includes a ribbed insert (26) integrally formed on the outer circumference, and abutment plates (24) and threaded posts (29) fixed at its ends. The top outer wall of the mounting base (1) is respectively fixed with upright plate one (25) and upright plate two (28). The outer circumference of the threaded post (29) is threaded with a locking nut two (27) for locking the limiting rod, upright plate one (25) and upright plate two (28).

6. A quick-mount motor base according to claim 5, characterized in that, The surface of the first upright plate (25) is provided with a first insertion hole that matches the outer diameter of the insertion rod (26), and the surface of the second upright plate (28) is provided with a second insertion hole that matches the outer diameter of the threaded column (29). By passing the insertion rod (26) of the limiting rod through the first insertion hole of the first upright plate (25), the insertion hole on the side of the mounting shaft (20), and the second insertion hole of the second upright plate (28) in sequence, and then tightening the second locking nut (27) on the threaded column (29), the limiting rod, the first upright plate (25), and the second upright plate (28) are locked.

7. A quick-installation base for a motor according to claim 2, characterized in that, The bottom outer wall of the waist-shaped plate (16) is fixed with a top plate (22), and the top outer wall of the mounting base (1) is fixed with an internal threaded sleeve (10). The inner circumference of the internal threaded sleeve (10) is threaded with an external threaded rod (21).

8. A quick-mount motor base according to claim 1, characterized in that, The mounting base (1) and the vibration damping pad (3) are both provided with fixing holes (2) for installation. The fixing holes (2) are set through the mounting base (1) and the vibration damping pad (3) so that the anchor bolts or expansion bolts can pass through and anchor the two together to the preset foundation.

9. A quick-installation base for a motor according to claim 7, characterized in that, The internal threaded sleeve (10), external threaded rod (21) and top plate (22) are replaced with a telescopic mechanism, which includes an electric telescopic rod (19) and two connecting parts installed at its ends.

10. A quick-mount motor base according to claim 9, characterized in that, The first connector includes a bracket (30) fixed to the side of the slide (23) and a connecting block (31) rotatably connected between the two sides of the bracket (30). The output end of the electric telescopic rod (19) is fixedly connected to the connecting block (31). The second connector includes a connecting block (33) fixed to the top outer wall of the mounting base (1) and a bracket (32) rotatably connected between the two sides of the connecting block (33). The tail of the electric telescopic rod (19) is fixedly connected to the bracket (32).

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