CN116460720B - An automatic processing device for substation structure accessories - Google Patents

Abstract

The invention discloses an automatic processing device for substation frame accessories, which includes an accessory body, a grinding stone plate and a swing structure. The accessory body moves vertically, the grinding stone plate is in contact with the arc-shaped outer wall of the accessory body, and the swing structure is used to drive the grinding stone plate along the edge. The arc-shaped outer wall of the accessory body moves along the trajectory; by controlling the grinding stone plate, it can move along the arc-shaped outer wall of the accessory body, thereby realizing the automatic grinding process of the accessory body outer wall by the grinding stone plate, and making it convenient for the grinding trajectory to coincide with the arc-shaped outer wall trajectory of the accessory body. , thus ensuring that the grinding amount at different arc-shaped positions on the outer wall of the accessory body is consistent, improving the flatness of the outer wall of the accessory body and the regularity of the arc, improving the processing quality of the accessory body, and effectively simplifying the grinding method. Only the accessory needs to be Automatic grinding work can be realized by keeping the main body moving vertically. There is no need to adjust the position or angle of the accessory body according to the different grinding positions of the accessory body, which improves the efficiency of accessory body processing.

Description

An automatic processing device for substation structure accessories

Technical field

The present invention relates to the technical field of substation parts processing, and in particular to an automatic processing device for substation frame parts.

Background technique

A substation is a power control transfer station used to regulate, transform, and distribute voltage and current in the power transmission system. The substation mainly consists of transformers, high-voltage circuit breakers, isolation switches, busbars, lightning arresters, capacitors, reactors, relay protection devices, It is composed of many equipments such as automatic devices, measurement and control devices, metering devices, and automation systems. In order to fix and assemble these many devices, a large number of structures, accessories and other structures are also required. For example, the accessory body in Figure 1 has the shape of It consists of an arc-shaped part in the middle and flat parts at both ends of the arc-shaped part, and there are fixing holes on the flat part. The accessory body is mainly used for the installation and fixation of various electrical appliances in substations. After the workshop processes and shapes the accessory body, it needs The arc-shaped outer wall is polished to remove impurities such as dust, oil layer or residue on the outer wall. However, traditional grinding equipment, such as belt grinders or grinding wheel grinders, cannot control the arc shape of the grinding unit on the machine along the accessory body. The outer wall track moves, so although traditional grinding equipment can polish the accessory body, the grinding amount at different positions on the arc-shaped outer wall of the accessory body cannot be consistent. Therefore, the outer wall of the accessory body after processing has poor smoothness. Processing quality is lower.

Contents of the invention

In order to solve the above technical problems, the present invention provides an automatic processing device for substation structure accessories.

In order to achieve the above objects, the technical solutions adopted by the present invention are:

An automatic processing device for substation structure accessories, including an accessory body, a grinding stone plate and a swing structure. The accessory body moves vertically, the grinding stone plate contacts the arc-shaped outer wall of the accessory body, and the swing structure is used to drive the grinding stone plate along the arc of the accessory body. Outer wall trajectory movement;

The swing structure includes a pillar in a vertical state. A right-angle arm and a telescopic rod are rotated on the pillar. The end of the right-angle arm away from the pillar is slidably provided with an extension sleeve. The corner position of the right-angle arm is provided with an intermediate rod and a telescopic rod. The movable end of the telescopic rod is rotatably connected to the extension sleeve. The grinding stone plate is set on the movable end of the telescopic rod. The sliding sleeve on the fixed end of the telescopic rod is equipped with a double-hole sliding sleeve. The middle rod slides through the double-hole sliding sleeve, and the middle rod slides through the double-hole sliding sleeve. Perpendicular to the telescopic pole;

It also includes a turntable, an eccentric column is eccentrically arranged on the turntable, and the top of the eccentric column is rotationally connected to the double-hole sliding sleeve.

Further, it also includes a base plate, the pillar is fixed on the base plate, the outer wall of the pillar is rotated with an auxiliary ring, and the right-angle arm and the telescopic rod are rotated and installed on the pillar through the auxiliary ring. The bottom of the base plate is provided with a first motor, and the first motor is The output end is connected to the turntable transmission, and the ends of the base plate are provided with two base frames opposite each other. A moving structure is provided in the base frame, and the moving structure can drive the accessory body to perform vertical translational movement;

Among them, the first motor drives the turntable to reciprocate within a prescribed angle.

Further, the sliding sleeve on the movable end of the telescopic rod is provided with a first movable sleeve, a leaf spring is connected between the first movable sleeve and the movable end of the telescopic rod, and a long gap is provided on the outer wall of the first movable sleeve. A limit column is slidably provided, the end of the limit column is fixed on the outer wall of the movable end of the telescopic rod, and the first movable sleeve is connected to the grinding stone plate.

Further, a protrusion is provided on the back of the grinding stone plate, and the protrusion is rotatably connected to the first movable sleeve through an insertion shaft.

Further, the mobile structure includes a second motor installed on the base frame. The output end of the second motor is provided with a screw screw. The screw screw is inserted into the base frame and is rotationally connected with the base frame. Two sliding parts are provided in the base frame. A slide block, the screw passes through the slide block and is threaded.

Further, a sliding plate is arranged vertically on the outer wall of the base frame, and two first cylinders are provided on the sliding plate. The telescopic direction of the first cylinder is perpendicular to the moving direction of the slide block, and the movable end of the first cylinder is fixed with a right-angle The right-angle plywood is slidably installed on the side wall of the slider.

Further, a second cylinder is fixed at the bottom of the base plate, a second movable sleeve is provided on the sliding sleeve of the movable end of the second cylinder, and a spring is connected between the second movable sleeve and the movable end of the second cylinder.

Further, a supporting plate is provided at the bottom of the slider located on the lower side of the base frame, and the supporting plate is used to lift and position the bottom of the accessory body.

Compared with the prior art, the beneficial effects of the present invention are: by controlling the grinding stone plate to move along the arc-shaped outer wall of the accessory body, the automatic grinding process of the outer wall of the accessory body by the grinding stone plate is realized, and the grinding track is conveniently aligned with the accessory body. The trajectory of the arc-shaped outer walls overlaps, thus ensuring that the grinding amount at different arc-shaped positions on the outer wall of the accessory body is consistent, improving the flatness of the outer wall of the accessory body and the regularity of the arc, improving the processing quality of the accessory body, and effectively simplifying the grinding method. , only need to keep the accessory body moving vertically to achieve automatic grinding work. There is no need to adjust the position or angle of the accessory body according to the different grinding positions of the accessory body, which improves the efficiency of accessory body processing.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a schematic diagram of the bottom structure of the substrate in Figure 1;

Figure 3 is an enlarged schematic diagram of the swing structure in Figure 1;

Figure 4 is a schematic enlarged structural diagram of the base frame in Figure 1;

Markings in the drawings: 1. Accessory body; 2. Grinding stone slab; 3. Pillar; 4. Right-angle arm; 5. Extension sleeve; 6. Middle rod; 7. Telescopic rod; 8. Double-hole sliding sleeve; 9. Turntable; 10. Eccentric column; 11. Base plate; 12. First motor; 13. Base frame; 14. First movable sleeve; 15. Leaf spring; 16. Limiting column; 17. Second motor; 18. Lead screw ; 19. Slider; 20. Slide plate; 21. First cylinder; 22. Right-angle splint; 23. Second cylinder; 24. Second movable sleeve; 25. Spring; 26. Support plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them.

In the description of the present invention, it should be noted that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis. This example is written in a progressive manner.

As shown in Figures 1 to 3, an automatic processing device for substation structure accessories of the present invention includes an accessory body 1, a grinding stone plate 2 and a swing structure. The accessory body 1 moves vertically, and the grinding stone plate 2 and the accessory body 1 arc The shaped outer wall contacts, and the swing structure is used to drive the grinding stone plate 2 to move along the arc-shaped outer wall trajectory of the accessory body 1;

The swing structure includes a pillar 3 in a vertical state. A right-angle arm 4 and a telescopic rod 7 are rotated on the pillar 3. The end of the right-angle arm 4 away from the pillar 3 is slidably equipped with an extension sleeve 5. The corner position of the right-angle arm 4 is An intermediate rod 6 is provided for rotation. The movable end of the telescopic rod 7 is rotationally connected to the extension sleeve 5. The grinding stone 2 is arranged on the movable end of the telescopic rod 7. The sliding sleeve on the fixed end of the telescopic rod 7 is provided with a double-hole sliding sleeve. 8. The middle rod 6 slides through the double-hole sliding sleeve 8, and the middle rod 6 and the telescopic rod 7 are perpendicular to each other;

It also includes a turntable 9, an eccentric column 10 is eccentrically arranged on the turntable 9, and the top of the eccentric column 10 is rotatably connected to the double-hole sliding sleeve 8.

Specifically, the swing structure can drive the grinding stone plate 2 to move along the arc-shaped outer wall of the accessory body 1, so that the grinding stone plate 2 can grind the outer wall of the accessory body 1, combined with the vertical movement of the accessory body 1, so that The grinding stone 2 is used to completely grind the outer wall of the accessory body 1 .

The axis of the pillar 3 and the axis of the turntable 9 are located on the same vertical plane. The operation mode of the swing structure is to rotate the turntable 9, and the turntable 9 moves the double-hole sliding sleeve 8 through the eccentric column 10 to slide on the telescopic rod 7. When the double-hole When the sliding sleeve 8 moves from the farthest end of the pillar 3 toward the direction of the pillar 3, the double-hole sliding sleeve 8 can push the right-angle arm 4 to rotate synchronously through the intermediate rod 6. At this time, the angle between the right-angle arm 4 and the telescopic rod 7 increases. The right-angle arm 4 pushes the telescopic rod 7 to extend through the extension sleeve 5, and the telescopic rod 7 drives the grinding stone 2 to move synchronously in the direction away from the pillar 3. When the turntable 9 pushes the double-hole sliding sleeve 8 away from the pillar 3 through the eccentric column 10, The angle between the right-angle arm 4 and the telescopic rod 7 decreases. At this time, the right-angle arm 4 pushes the telescopic rod 7 to shrink through the extension sleeve 5, and the telescopic rod 7 drives the grinding stone 2 to move toward the pillar 3.

In actual use, when the telescopic rod 7 rotates from a direction perpendicular to the accessory body 1 to a direction deviating from the accessory body 1 , the distance between the grinding stone 2 and the pillar 3 increases. When the telescopic rod 7 rotates from a direction deviated from the accessory body 1 When the direction is rotated in the direction perpendicular to the accessory body 1, the distance between the grinding stone plate 2 and the pillar 3 is shortened, so the movement trajectory of the grinding stone 2 is an arc shape with the opening facing the outside, so that the grinding stone 2 can be moved along the accessory body 1. The arc-shaped outer wall trajectory moves. Since the movement trajectory of the grinding stone 2 is arc-shaped, during actual operation, the eccentric radius of the eccentric column 10, the length of the two right-angled sides of the right-angle arm 4, and the distance between the turntable 9 and the pillar 3 can be adjusted. Distance and other relevant parameters are used to adjust the arc-shaped trajectory of the grinding stone plate 2, so that its trajectory matches the shape of the arc-shaped outer wall of the accessory body 1.

By controlling the grinding stone plate 2 to move along the arc-shaped outer wall of the accessory body 1, the automatic grinding process of the outer wall of the accessory body 1 by the grinding stone plate 2 is realized, and the grinding track is conveniently coincident with the arc-shaped outer wall track of the accessory body 1, thereby ensuring The grinding amount at different arc-shaped positions on the outer wall of the accessory body 1 is kept consistent, the flatness and arc regularity of the outer wall of the accessory body 1 are improved, and the processing quality of the accessory body 1 is improved. At the same time, the grinding method is effectively simplified, and the accessory only needs to be Automatic grinding work can be realized by keeping the main body 1 moving vertically. There is no need to adjust the position or angle of the accessory body 1 according to the different grinding positions of the accessory body 1, which improves the working efficiency of the accessory body 1 processing.

As shown in Figures 1 to 2, as a preferred embodiment of the above, it also includes a base plate 11, the pillar 3 is fixed on the base plate 11, the outer wall of the pillar 3 is rotated with an auxiliary ring, and the right-angle arm 4 and the telescopic rod 7 are passed through the auxiliary ring. The ring is rotatably installed on the pillar 3. A first motor 12 is provided at the bottom of the base plate 11. The output end of the first motor 12 is drivingly connected to the turntable 9. Two base frames 13 are arranged opposite the ends of the base plate 11. There are two base frames 13 arranged inside the base frame 13. There is a moving structure, which can drive the accessory body 1 to perform vertical translation movement;

Among them, the first motor 12 drives the turntable 9 to reciprocate within a prescribed angle.

Specifically, the first motor 12 drives the turntable 9 to only perform arc-shaped reciprocating rotation, so that the eccentric column 10 can be kept reciprocating in the area on the right side of the turntable 9, thereby facilitating the grinding stone plate 2 to always maintain the arc-shaped movement trajectory. Contact with the outer wall of the accessory body 1 to avoid separation between the grinding stone plate 2 and the accessory body 1 when the turntable 9 continues to rotate in one direction, and the grinding stone plate 2 can only perform one-way relative movement with the accessory body 1, and grinding The stone plate 2 can only perform grinding work on the accessory body 1 with a one-way movement trajectory. By reciprocating the grinding stone plate 2, the two-way polishing method of the accessory body 1 by the grinding stone plate 2 can be realized.

The accessory body 1 is fixed on the moving structure in the base frame 13 and can drive the accessory body 1 to perform vertical translation movement through the moving structure, so that the grinding stone 2 can fully grind the accessory body 1 .

As shown in Figure 3, as a preferred embodiment of the above, a first movable sleeve 14 is provided on the sliding sleeve on the movable end of the telescopic rod 7, and a leaf spring 15 is connected between the first movable sleeve 14 and the movable end of the telescopic rod 7. , a long gap is provided on the outer wall of the first movable sleeve 14, and a limit column 16 is slidably provided in the long gap. The end of the limit column 16 is fixed on the outer wall of the movable end of the telescopic rod 7. The first movable sleeve 14 is connected to the grinding stone plate 2 connect.

Specifically, when the accessory body 1 is fixed on the mobile structure, the accessory body 1 can squeeze the grinding stone plate 2, so that the grinding stone plate 2 pushes the first movable sleeve 14 to slide on the movable end of the telescopic rod 7, and the grinding stone plate 2 slides on the movable end of the telescopic rod 7. The spring 15 elastically deforms, and the leaf spring 15 provides elastic thrust to the grinding stone plate 2 in the opposite direction, so that the grinding stone plate 2 and the accessory body 1 are kept in a close state to facilitate the provision of sufficient pressure for the grinding work. The limiting column 16 And the long gap can limit the moving range of the first movable sleeve 14 on the movable end of the telescopic rod 7.

As shown in Figure 3, as a preferred embodiment of the above, a protrusion is provided on the back of the grinding stone plate 2, and the protrusion is rotationally connected to the first movable sleeve 14 through an insertion shaft.

Specifically, by enabling the grinding stone plate 2 to rotate on the first movable sleeve 14, it is convenient for the grinding stone plate 2 to always be buckled on the inner wall of the accessory body 1 when grinding the outer wall of the accessory body 1. The arc-shaped outer wall ensures that the grinding stone plate 2 and the accessory body 1 are always in surface contact. At the same time, by setting a protrusion on the back of the grinding stone plate 2, the rotation of the grinding stone plate 2 on the first movable sleeve 14 can be facilitated. Provide an movable space to prevent the end of the first movable sleeve 14 from blocking the back of the grinding stone 2 when the distance between the back of the grinding stone 2 and the end of the first movable sleeve 14 is small.

As shown in Figure 4, as a preferred embodiment of the above, the moving structure includes a second motor 17 installed on the base frame 13. The output end of the second motor 17 is provided with a screw 18, and the screw 18 is inserted into the base frame. 13 and is rotatably connected with the base frame 13. Two slide blocks 19 are slidably provided in the base frame 13. The screw 18 passes through the slide blocks 19 and is threadedly connected.

Specifically, the accessory body 1 is fixed on the slider 19, and the second motor 17 can push the slider 19 to move up and down through the screw 18, thereby driving the accessory body 1 to move up and down, achieving the purpose of vertical translation movement of the accessory body 1.

As shown in Figure 4, as a preferred embodiment of the above embodiment, a sliding plate 20 is provided vertically sliding on the outer wall of the base frame 13. The sliding plate 20 is provided with two first cylinders 21. The telescopic direction of the first cylinder 21 is consistent with the sliding direction. The movement direction of the block 19 is vertical. The movable end of the first cylinder 21 is fixed with a right-angle splint 22. The right-angle splint 22 is slidably installed on the side wall of the slide block 19 laterally.

Specifically, the flat part of the accessory body 1 is inserted between the right-angle clamping plate 22 and the slider 19. When the first cylinder 21 contracts, the right-angle clamping plate 22 moves synchronously and squeezes and fixes the accessory body 1 on the slider 19, thereby enabling The slider 19 drives the accessory body 1 to move up and down. At the same time, the movement of the slider 19 can drive the slide plate 20 to slide vertically on the base frame 13 .

As shown in Figure 2, as a preferred embodiment of the above, a second cylinder 23 is fixed at the bottom of the base plate 11. The sliding sleeve of the movable end of the second cylinder 23 is provided with a second movable sleeve 24. The second movable sleeve 24 is connected to the second movable sleeve 24. A spring 25 is connected between the movable ends of the cylinder 23.

Specifically, when the two planar parts of the accessory body 1 are respectively placed between the slide blocks 19 and the right-angle clamping plates 22 on the two base frames 13, the second cylinder 23 is extended, and the second cylinder 23 can push the second movable sleeve. 24. Squeeze the middle part of the accessory body 1 so that the flat part of the accessory body 1 is in surface contact with the side walls of the slider 19. At this time, due to the right-angle splints 22 on the two base frames 13, the side walls of the accessory body 1 are in contact with each other on both sides of the accessory body 1. The flat parts of the accessory body 1 are squeezed to realize the positioning work of the accessory body 1, so that the two flat parts of the accessory body 1 can be kept on the same vertical plane, and the vertical plane is perpendicular to the length direction of the second cylinder 23.

By providing the spring 25, when the second movable sleeve 24 contacts the grinding stone 2, the force exerted by the second movable sleeve 24 on the grinding stone 2 is an elastic force, thereby facilitating the contraction of the first cylinder 21 and passing through the right angle. The splint 22 squeezes the accessory body 1 on the slider 19 to avoid directly using the movable end of the second cylinder 23 to squeeze the accessory body 1. The expansion and contraction directions of the second cylinder 23 and the first cylinder 21 are opposite, which will cause the effect. Interference occurs.

As shown in FIG. 4 , as a preferred embodiment of the above embodiment, the bottom of the slider 19 located on the lower side of the base frame 13 is provided with a supporting plate 26 , and the supporting plate 26 is used to lift and position the bottom of the accessory body 1 .

Specifically, by providing the supporting plate 26, the accessory body 1 can be directly placed between the slider 19 and the right-angle splint 22 when loading the accessory body 1, thus avoiding the need for workers to manually support the accessory body 1.

The above are only preferred embodiments of the present invention. It should be noted that those of ordinary skill in the art can also make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (8)

1. An automatic processing device for substation structure accessories, which is characterized in that it includes an accessory body (1), a grinding stone plate (2) and a swing structure. The accessory body (1) moves vertically, and the grinding stone plate (2) and the accessory body (1) The arc-shaped outer wall contacts, and the swing structure is used to drive the grinding stone plate (2) to move along the arc-shaped outer wall trajectory of the accessory body (1); The swing structure includes a pillar (3) in a vertical state. A right-angle arm (4) and a telescopic rod (7) are rotatably provided on the pillar (3). The right-angle arm (4) is slidably sleeved at the end far away from the pillar (3). There is an extension sleeve (5), an intermediate rod (6) is provided at the corner position of the right-angle arm (4), the movable end of the telescopic rod (7) is rotationally connected to the extension sleeve (5), and the grinding stone plate (2) is provided On the movable end of the telescopic rod (7), the sliding sleeve on the fixed end of the telescopic rod (7) is provided with a double-hole sliding sleeve (8). The middle rod (6) slides through the double-hole sliding sleeve (8), and the middle rod (6) slides through the double-hole sliding sleeve (8). The rod (6) and the telescopic rod (7) are perpendicular to each other; It also includes a turntable (9), an eccentric column (10) is eccentrically arranged on the turntable (9), and the top of the eccentric column (10) is rotationally connected to the double-hole sliding sleeve (8). 2. An automatic processing device for substation structure accessories according to claim 1, characterized in that it also includes a base plate (11), the pillars (3) are fixed on the base plate (11), and the pillars (3) are rotated and sleeved on the outer wall. There is an auxiliary ring. The right-angle arm (4) and the telescopic rod (7) are rotated and installed on the pillar (3) through the auxiliary ring. The bottom of the base plate (11) is provided with a first motor (12), and the output of the first motor (12) The end of the base plate (11) is drivingly connected to the turntable (9). Two base frames (13) are arranged opposite the ends of the base plate (11). A moving structure is provided in the base frame (13). The moving structure can drive the accessory body (1) to vertically Translational motion; Among them, the first motor (12) drives the turntable (9) to reciprocate within a prescribed angle. 3. An automatic processing device for substation frame accessories according to claim 2, characterized in that the sliding sleeve on the movable end of the telescopic rod (7) is provided with a first movable sleeve (14), and the first movable sleeve (14) A leaf spring (15) is connected between 14) and the movable end of the telescopic rod (7). A long gap is provided on the outer wall of the first movable sleeve (14), and a limit column (16) is slidably provided in the long gap. The limit column (16) is The end of 16) is fixed on the outer wall of the movable end of the telescopic rod (7), and the first movable sleeve (14) is connected to the grinding stone plate (2). 4. An automatic processing device for substation frame accessories according to claim 3, characterized in that a protrusion is provided on the back of the grinding stone plate (2), and a passage passes between the protrusion and the first movable sleeve (14). Plug shaft rotation connection. 5. An automatic processing device for substation frame accessories according to claim 4, characterized in that the mobile structure includes a second motor (17) installed on the base frame (13), and the second motor (17) The output end transmission is provided with a screw (18). The screw (18) is inserted into the base frame (13) and is rotationally connected with the base frame (13). There are two sliders (19) slidingly provided in the base frame (13). The lead screw (18) passes through the slide block (19) and is threaded. 6. An automatic processing device for substation frame accessories as claimed in claim 5, characterized in that a sliding plate (20) is provided for vertical sliding on the outer wall of the base frame (13), and two sliding plates (20) are provided on the sliding plate (20). A first cylinder (21). The telescopic direction of the first cylinder (21) is perpendicular to the moving direction of the slider (19). A right-angle splint (22) is fixed on the movable end of the first cylinder (21). The right-angle splint (22) Lateral sliding is installed on the side wall of the slider (19). 7. An automatic processing device for substation structure accessories according to claim 6, characterized in that a second cylinder (23) is fixed at the bottom of the base plate (11), and the movable end of the second cylinder (23) is slidably sleeved. There is a second movable sleeve (24), and a spring (25) is connected between the second movable sleeve (24) and the movable end of the second cylinder (23). 8. An automatic processing device for substation frame accessories according to claim 7, characterized in that a supporting plate (26) is provided at the bottom of the slider (19) located on the lower side of the base frame (13), and the supporting plate (26) 26) Used to lift and position the bottom of the accessory body (1).