An intelligent trolley for convenient loading

Abstract

The utility model discloses an intelligent trolley for convenient material loading, including a mobile trolley, a controller, a collaborative robot and an air source. Four Foma wheels are arranged at the bottom of the mobile trolley, the upper table of the mobile trolley serves as a loading platform, and a first slide and a second slide are arranged on the other side of the loading platform with staggered heights. A material tray is magnetically attracted on the upper surfaces of the first slide and the second slide. An upper fixed plate is arranged in the mobile trolley, the loading platform is fixed above the upper fixed plate, and two first rodless cylinders and a second rodless cylinder are arranged above the upper fixed plate. The bottom of the first slide is connected to the sliders 1 of the two first rodless cylinders, and a connecting frame is arranged on both sides of the bottom of the second slide. The bottom of the connecting frame is respectively connected to the sliders 2 of the second rodless cylinder. The first slide and the second slide reciprocate along the length direction of the mobile trolley, and the reciprocating sliding of the first slide and the second slide does not affect each other. This structure realizes the separate control of the two slides, and the equipment is easy to move.

Description

Technical Field

[0001] The utility model belongs to the technical field related to loading and unloading equipment, and particularly relates to an intelligent trolley for convenient loading of materials. Background Art

[0002] With the continuous improvement of the requirements for automation equipment, the requirements for loading and unloading equipment are also getting higher and higher. In some loading and unloading equipment, in order to improve the efficiency of loading or unloading, a double-slide transport device is usually used for loading or unloading. For example, the patent name disclosed with patent number 202322173080.8 is a transport device and loading and unloading equipment. In order to ensure that the reciprocating sliding between the two slides does not affect each other, it is necessary to adjust the height of one of the slides. Therefore, one of the slide structures needs to add a first drive component to drive the second slide for lifting and lowering movements. Moreover, the two slides are driven by the same second drive component to achieve reciprocating sliding along the length direction of the base, and the reciprocating motions of the two are opposite, so that one slide is always guaranteed to be located in the loading area. However, such a structure is relatively complicated to operate, and once the second drive component equipment is damaged and needs maintenance, the entire equipment needs to stop working and cannot load materials. Moreover, the flexibility of the structure is poor and it is inconvenient to move, so it needs to be improved. Utility Model Content

[0003] The utility model aims to provide an intelligent trolley for convenient loading of materials, which solves the problems of the existing loading and unloading equipment having a relatively complex overall structure, easily affecting the loading of materials once the driving equipment is damaged, and having poor structural flexibility and being unable to move.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is an intelligent trolley for convenient material loading, comprising a mobile trolley, four Foma wheels are arranged at the bottom of the mobile trolley, a controller is arranged inside the mobile trolley, the upper table surface of the mobile trolley is used as a loading table, a collaborative robot electrically connected to the controller is arranged on one side of the loading table, a first slide and a second slide are arranged at different heights on the other side of the loading table, material trays are magnetically attracted on the upper surfaces of the first slide and the second slide, an upper fixed plate is arranged in the mobile trolley, the loading table is fixed above the upper fixed plate, and a There are two first rodless cylinders and two second rodless cylinders arranged in parallel. The bottom of the first slide is connected to the slider 1 of the two first rodless cylinders. A connecting frame is arranged on both sides of the bottom of the second slide. The bottom of the connecting frame is respectively connected to the slider 2 of the second rodless cylinder. An air source connected to the first rodless cylinder and the second rodless cylinder is also arranged on the right side of the moving cart. The air source is electrically connected to the controller. The first slide and the second slide reciprocate along the length direction of the moving cart, and the reciprocating sliding of the first slide and the second slide does not affect each other.

[0006] Preferably, in order to facilitate the rapid clamping of parts and rapid loading, the collaborative robot includes a pneumatic robotic arm, a mounting seat, a rotary swing cylinder, a triangular isosceles connector and two pneumatic three-grips. The bottom of the pneumatic robotic arm is fixed on the loading platform, and a mounting seat is provided below the top of the pneumatic robotic arm. The rotary swing cylinder is fixed below the mounting seat. The first surface of the triangular isosceles connector is parallel to the horizontal plane, the rotation axis of the rotary swing cylinder is perpendicular to the horizontal plane, the single rotation angle of the rotary swing cylinder is 180°, and two pneumatic three-grips are connected to the triangular isosceles connector, and the two pneumatic three-grips are respectively provided on the second surface and the third surface of the triangular isosceles connector.

[0007] Preferably, in order to improve safety and provide a reminder of the working status of the equipment, the loading platform is of a Z-shaped structure, and a safety net is provided on the loading platform to isolate the first slide and the second slide, and an avoidance passage is provided on the safety net to facilitate the passage of the first slide and the second slide, and a three-color indicator light electrically connected to the controller is provided on the longitudinal beam of the loading platform.

[0008] Preferably, in order to facilitate movement and later maintenance of the controller, a front door panel is hinged on the front of the mobile cart, and the controller can be exposed when the front door panel is opened. Operating handles are provided at the front and rear of the mobile cart, and an air outlet is provided on the front door panel.

[0009] Preferably, in order to improve the internal heat dissipation effect, a cooling fan electrically connected to the controller is arranged inside the mobile cart, a ventilation and heat dissipation filter connected to the interior of the mobile cart is arranged at the rear of the mobile cart, and a control panel electrically connected to the controller is arranged on the left side of the mobile cart, and control buttons for controlling the operation of the first slide or the second slide are arranged on the control panel.

[0010] Preferably, in order to improve the anti-skid effect during positioning, an anti-skid adjustment component is provided on the front and rear sides of the bottom of the mobile trolley, and each anti-skid adjustment component includes a positioning plate, an adjustment rod and an anti-skid base. The positioning plate is fixed to the bottom of the mobile trolley, and an adjustment nut is provided at the bottom of each positioning plate. The upper end of the adjustment rod is threadedly connected to the adjustment nut, and the upper end of the adjustment rod passes through the positioning plate, and the lower end of the adjustment rod is fixedly connected to the anti-skid base, and the bottom of the anti-skid base is provided with an anti-skid and wear-resistant layer.

[0011] Preferably, in order to further improve the fixing effect, an L-shaped positioning base plate is provided on the left and right sides of the mobile trolley, and two positioning through holes are provided on the transverse plate of the L-shaped positioning base plate.

[0012] The utility model has the following beneficial effects:

[0013] 1. This structure uses magnetic suction to fix the upper material tray on the slide, so it is convenient to disassemble and replace different types of material trays later. Therefore, it can realize the universal setting of loading and unloading operations on CNC machine tools, machining centers and other machine tools. And the use of magnetic suction makes it more convenient and cost-effective to replace the material tray later. It can be applied to another position by simply replacing the material tray;

[0014] 2. Since the equipment uses two high and low level, staggered movable trays, the two trays are driven by independent rodless cylinders below, so as to ensure that there are always materials in the working area of ​​the collaborative robot for it to grab, and once the driving structure of one set of trays is damaged, it will not affect the work of the other set of trays;

[0015] 3. At the same time, the manual loading area and the collaborative robot loading area are isolated to further ensure the safety of personnel loading;

[0016] 4. Four Fomar wheels are used at the bottom of the equipment to ensure that the entire equipment has high flexibility and fast movement, and can be applied to various scenarios within the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural stereogram of a smart trolley for convenient loading in Example 1;

[0018] Figure 2This is a three-dimensional diagram of the back structure of a smart vehicle for convenient loading in Example 1;

[0019] Figure 3 for Figure 1 There is no structural diagram when the front door panel is installed;

[0020] Figure 4 This is a structural stereogram of a smart vehicle for convenient loading in Example 1 with the right side facing forward;

[0021] Figure 5 This is a front view of a smart vehicle for convenient loading in Example 1;

[0022] Figure 6 This is a structural stereogram of a smart trolley for convenient loading in Example 1 when no collaborative robot and material tray are installed above it;

[0023] Figure 7 for Figure 6 Schematic diagram of the bottom structure;

[0024] Figure 8 for Figure 7 Schematic diagram of the structure without installing the second slide;

[0025] Fig. 9 for Figure 8 A schematic diagram of the structure when the first slide, a connecting frame and three baffles are separated from other components;

[0026] Fig.10 for Figure 8 A schematic diagram of a structure in which only the first slide, the second slide, the connecting frame, the first rodless cylinder and the second rodless cylinder are installed;

[0027] Fig.11 Schematic diagram of the collaborative robot structure Figure 1 ;

[0028] Fig.12 Schematic diagram of the collaborative robot structure Figure 2 .

[0029] Reference numerals:

[0030] Mobile trolley 1, loading platform 101, sliding through hole 1011, baffle 1012, Foma wheel 2, controller 3, collaborative robot 4, pneumatic manipulator 401, mounting seat 402, rotary swing cylinder 403, triangular isosceles connecting seat 404, pneumatic three-claw 405, first surface 4041, second surface 4042, third surface 4043, first slide 5, second slide 6, tray 7, upper fixed plate 8, first rodless cylinder 9, slider 1 901, second rodless cylinder 10. Slider 2 10-1. Connecting frame 11. Air source 12. Safety net 13. Avoidance channel 14. Three-color indicator light 15. Cooling fan 16. Ventilation and cooling filter 17. Control panel 18. Control button 181. Front door panel 19. Air outlet 191. Operating handle 20. Anti-skid adjustment component 21. Positioning plate 211. Adjustment rod 212. Anti-skid base 213. Adjustment nut 214. Anti-skid wear-resistant layer 215. L-shaped positioning base plate 22. Positioning through hole 23. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example 1

[0033] See also Figure 1-12 As shown, the present embodiment discloses an intelligent trolley for convenient loading, comprising a mobile trolley 1, four Foma wheels 2 are arranged at the bottom of the mobile trolley 1, a controller 3 is arranged inside the mobile trolley 1, the upper surface of the mobile trolley 1 is used as a loading platform 101, a collaborative robot 4 electrically connected to the controller 3 is arranged on one side of the loading platform 101, and a first slide 5 and a second slide 6 are arranged on the other side of the loading platform 101 with staggered distribution of heights, and a material tray 7 is magnetically attracted on the upper surfaces of the first slide 5 and the second slide 6. The bottom of the material tray 7 described in the present embodiment is made of a metal material that can be attracted by a magnet, and in order to avoid the product being attracted later, a layer of magnetic isolation plate (not marked in the figure) with magnetic isolation is arranged inside the discharge hole on the material tray 7; and the upper surfaces of the first slide 5 and the second slide 6 are both provided with a strong magnetic sheet 24 for attracting the material tray 7, and the material tray for fixing different products can be replaced later by magnetic means;

[0034] An upper fixed plate 8 is arranged in the moving trolley 1, and the loading platform 101 is fixed above the upper fixed plate 8. Two parallel first rodless cylinders 9 and two parallel second rodless cylinders 10 are arranged above the upper fixed plate 8. The bottom of the first slide 5 is connected to the slider 1 901 of the two first rodless cylinders 9. A connecting frame 11 is arranged on both sides of the bottom of the second slide 6. The bottom of the connecting frame 11 is respectively connected to the slider 2 10-1 of the second rodless cylinder 10. An air source 12 connected to the first rodless cylinder 9 and the second rodless cylinder 10 is also arranged on the right side of the moving trolley 1. The air source 12 is electrically connected to the controller 3, and the first slide 5 and the second slide 6 slide back and forth along the length direction of the mobile trolley 1. The reciprocating sliding of the first slide 5 and the second slide 6 do not affect each other. A sliding through hole 1011 is arranged on the loading platform 101 described in the present embodiment. In order to ensure that the internal cylinder is not exposed in the later stage, three baffles 1012 are covered with intervals on the sliding through hole 1011, and there is a spacing between the two outermost baffles 1012 and the front and rear of the sliding through hole 1011, which is used to facilitate the sliding of the corresponding two connecting frames 11, and the spacing between the two adjacent baffles 1012 is used to place the sliding block 10-1 on the second rodless cylinder 10 to slide.

[0035] It should be noted that the first rodless cylinder 9, the second rodless cylinder 10 and the controller 3 are all conventional existing products that can be purchased, so their specific structures are not described in detail, and the Fuma wheel 2 is also existing technology, which has the functions of lifting, limiting and universal movement.

[0036] like Fig.11 , Fig.12As shown, as a preference, in order to facilitate quick clamping of parts and rapid loading, the collaborative robot 4 includes a pneumatic mechanical arm 401, a mounting seat 402, a rotary swing cylinder 403, a triangular isosceles connecting seat 404 and two pneumatic three-claws 405, the bottom of the pneumatic mechanical arm 401 is fixed on the loading platform 101, a mounting seat 402 is arranged below the top of the pneumatic mechanical arm 401, the rotary swing cylinder 403 is fixed below the mounting seat 402, the first surface 4041 of the triangular isosceles connecting seat 404 is parallel to the horizontal plane, the rotation axis of the rotary swing cylinder 403 is perpendicular to the horizontal plane, and the single rotation angle of the rotary swing cylinder 403 is 180 °, and two pneumatic three-grips 405 are connected to the triangular isosceles connecting seat 404, and the two pneumatic three-grips 405 are respectively arranged on the second surface 4042 and the third surface 4043 of the triangular isosceles connecting seat 404. The pneumatic mechanical arm 401, the pneumatic three-grips 405, and the rotary swing cylinder 403 described in this structure are all commercially available products, so they are not described in detail. When working, after a single rotation of the rotary swing cylinder 403, one of the pneumatic three-grips 405 can be rotated onto the material tray 7, and after the parts on the material tray 7 are clamped, after a single rotation of the rotary swing cylinder 403, the pneumatic three-grips 405 clamped with the parts are rotated to the processing station to realize product loading.

[0037] Preferably, in order to improve safety and provide a reminder of the working status of the equipment, the loading platform 101 is of a Z-shaped structure, and a safety net 13 is provided on the loading platform 101 to isolate the first slide 5 from the second slide 6, and an avoidance passage 14 is provided on the safety net 13 to facilitate the passage of the first slide 5 and the second slide 6, and a three-color indicator light 15 electrically connected to the controller 3 is provided on the longitudinal beam of the loading platform 101. The three-color indicator light 15 described in this embodiment has three colors, representing different states respectively. For example, red represents a fault state of the equipment, green represents a working state, and yellow represents a standby state of the equipment. The added safety net 13 realizes safe isolation of the material trays on both sides to improve safety.

[0038] Preferably, in order to facilitate movement and later maintenance of the controller, a front door panel 19 is hinged on the front of the mobile cart 1, and the controller 3 can be exposed when the front door panel 19 is opened. Operating handles 20 are provided at the front and rear of the mobile cart 1, and an air outlet 191 is also provided on the front door panel 19, which is corresponding to the air inlet of the ventilation and heat dissipation filter 17 below to achieve internal and external circulation of air. In order to improve the internal heat dissipation effect, a cooling fan 16 electrically connected to the controller 3 is provided inside the mobile cart 1, and a ventilation and heat dissipation filter 17 connected to the inside of the mobile cart 1 is provided at the rear of the mobile cart 1. A control console 18 electrically connected to the controller 3 is provided on the left side of the mobile cart 1, and a control console 18 is provided with a control panel for controlling the first slide 5 or the second slide 6 working control buttons 181, there are 4 control buttons 181 in the present structure, two of which are used to start the corresponding rodless cylinders, and the other two control buttons 181 are used to adjust the air pressure of the corresponding rodless cylinders, and the cooling fan 16 in the present structure is installed near the back of the mobile trolley 1 and aligned with the ventilation and cooling filter 17, so that when the cooling fan 16 is turned on, the cooling fan 16 draws outside air from the ventilation and cooling filter 17, and then dissipates the heat inside the mobile trolley 1, and then uses the air outlet 191 to realize internal and external circulation of wind, dissipate water inside the mobile trolley 1, and avoid the heat generated by the operation of the controller 3 cannot be dissipated in the mobile trolley 1 and affect the service life of the electronic equipment inside the controller 3.

[0039] like Figure 7 As shown, preferably, in order to improve the anti-skid effect during positioning, an anti-skid adjustment component 21 is provided on both sides of the front and rear of the bottom of the mobile trolley 1, and each anti-skid adjustment component 21 includes a positioning plate 211, an adjustment rod 212 and an anti-skid base 213. The positioning plate 211 is fixed to the bottom of the mobile trolley 1, and an adjusting nut 214 is provided at the bottom of each positioning plate 211. The upper end of the adjusting rod 212 is threadedly connected to the adjusting nut 214, and the upper end of the adjusting rod 212 passes through the positioning plate 211, and the lower end of the adjusting rod 212 is fixedly connected to the anti-skid base 213. The bottom of the anti-skid base 213 is provided with an anti-skid wear-resistant layer 215. In this embodiment, the adjusting rod 212 is adjusted to move up and down by rotating the adjusting rod 212. When the device needs to be anti-skid positioned, the adjusting rod 212 can be rotated to allow the bottom of the anti-skid wear-resistant layer 215 to contact the ground, thereby achieving the anti-skid positioning effect on the entire device and avoiding arbitrary movement due to the action of the Fomar wheel 2 when placed.

[0040] Preferably, in order to further improve the fixing effect, an L-shaped positioning base plate 22 is provided on the left and right sides of the mobile trolley 1, and two positioning through holes 23 are provided on the horizontal plate of the L-shaped positioning base plate 22. In this structure, an L-shaped positioning base plate 22 is added, and the positioning through holes 23 at the bottom of the L-shaped positioning base plate 22 are utilized. When the device needs to be fixed, the screws are directly passed through the positioning through holes 23 and fixed to the corresponding ground.

[0041] The specific working principle of this structure is as follows:

[0042] First, two trays 7 are placed correspondingly on the first slide 5 and the second slide 6 with high and low offset settings, and then the products are manually placed in the discharge holes of the tray 7 in sequence. In the initial state, the second slide 6 is located in the loading area, close to the collaborative robot 4, and the collaborative robot 4 works to grab the products of the tray 7 on the second slide 6 in sequence and put them into the processing station of the processing equipment; when the second slide 6 has finished grabbing the products of the tray 7, the first rodless cylinder 9 is driven to work first, so that the first slide 5 moves to the right to the loading area to ensure that the collaborative robot 4 continues to load, and then the second rodless cylinder 10 is driven to work, so that the second slide 6 moves to the far left, and the products are manually placed on the empty loading tray 7 to realize reciprocating motion for rapid loading. Therefore, this structural setting has the following technical advantages:

[0043] 1. In this structure, since the upper material tray 7 is fixed on the slide table by magnetic attraction, it is convenient to disassemble and replace different types of material trays in the later stage, so it can realize the universal setting of loading and unloading operations on CNC machine tools, machining centers and other machine tools, and the use of magnetic attraction makes it more convenient and cost-effective to replace the material tray in the later stage, and it can be applied to another position by simply replacing the material tray;

[0044] 2. Since the equipment uses two high and low level, staggered movable trays, the two trays are driven by independent rodless cylinders below, so as to ensure that there are always materials in the working area of ​​the collaborative robot for it to grab, and once the driving structure of one set of trays is damaged, it will not affect the work of the other set of trays;

[0045] 3. At the same time, the manual loading area and the collaborative robot loading area are isolated to further ensure the safety of personnel loading;

[0046] 4. Four Forma wheels 2 are used at the bottom of the equipment to ensure that the entire equipment has high flexibility and fast movement, and can be applied to various scenarios in the factory.

[0047] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. An intelligent trolley for convenient loading, comprising a mobile trolley (1), four Foma wheels (2) are arranged at the bottom of the mobile trolley (1), and a controller (3) is arranged inside the mobile trolley (1), characterized in that: The upper surface of the mobile cart (1) serves as a loading platform (101), and a collaborative robot (4) electrically connected to a controller (3) is arranged on one side of the loading platform (101), and a first slide (5) and a second slide (6) are arranged at different heights on the other side of the loading platform (101), and a material tray (7) is magnetically attracted on the upper surfaces of the first slide (5) and the second slide (6), and an upper fixed plate (8) is arranged in the mobile cart (1), and the loading platform (101) is fixed above the upper fixed plate (8), and two first rodless cylinders (9) and two second rodless cylinders (10) arranged in parallel are arranged above the upper fixed plate (8), and the first rodless cylinders (9) and the second rodless cylinders (10) arranged in parallel are arranged above the upper fixed plate (8). The bottom of a slide (5) is connected to the sliders 1 (901) of the two first rodless cylinders (9), and a connecting frame (11) is provided on both sides of the bottom of the second slide (6), and the bottoms of the connecting frames (11) are respectively connected to the sliders 2 (10-1) of the second rodless cylinders (10). An air source (12) connected to the first rodless cylinder (9) and the second rodless cylinder (10) is also provided on the right side of the moving trolley (1), and the air source (12) is electrically connected to the controller (3). The first slide (5) and the second slide (6) slide back and forth along the length direction of the moving trolley (1), and the reciprocating sliding of the first slide (5) and the second slide (6) do not affect each other.

2. The intelligent trolley for convenient loading of materials according to claim 1 is characterized in that: The collaborative robot (4) comprises a pneumatic mechanical arm (401), a mounting seat (402), a rotary swing cylinder (403), a triangular isosceles connection seat (404) and two pneumatic three-grips (405), wherein the bottom of the pneumatic mechanical arm (401) is fixed on the loading platform (101), a mounting seat (402) is arranged below the top of the pneumatic mechanical arm (401), the rotary swing cylinder (403) is fixed below the mounting seat (402), the triangular isosceles connection seat (404) and two pneumatic three-grips (405) The first surface (4041) of the waist connecting seat (404) is parallel to the horizontal plane, the rotation axis of the rotary swing cylinder (403) is perpendicular to the horizontal plane, the single rotation angle of the rotary swing cylinder (403) is 180°, and two pneumatic three-grips (405) are connected to the triangular isosceles connecting seat (404), and the two pneumatic three-grips (405) are respectively arranged on the second surface (4042) and the third surface (4043) of the triangular isosceles connecting seat (404).

3. The intelligent trolley for convenient loading of materials according to claim 1 is characterized in that: The loading platform (101) is of a Z-shaped structure. A safety net (13) is provided on the loading platform (101) to isolate the first slide (5) from the second slide (6). An avoidance passage (14) is provided on the safety net (13) to facilitate the first slide (5) and the second slide (6) to pass through. A three-color indicator light (15) electrically connected to the controller (3) is provided on the longitudinal beam of the loading platform (101).

4. The intelligent trolley for convenient loading of materials according to claim 1 is characterized in that: A front door panel (19) is hinged in front of the mobile vehicle (1), and the controller (3) can be exposed when the front door panel (19) is opened. Operating handles (20) are provided at the front and rear of the mobile vehicle (1), and an air outlet (191) is provided on the front door panel (19).

5. The intelligent trolley for convenient loading of materials according to claim 4 is characterized in that: A cooling fan (16) electrically connected to the controller (3) is arranged inside the mobile trolley (1), a ventilation and cooling filter (17) connected to the inside of the mobile trolley (1) is arranged at the rear of the mobile trolley (1), and a control panel (18) electrically connected to the controller (3) is arranged on the left side of the mobile trolley (1), and a control button (181) for controlling the operation of the first slide (5) or the second slide (6) is arranged on the control panel (18).

6. The intelligent trolley for convenient loading of materials according to claim 1 is characterized in that: An anti-skid adjustment component (21) is provided on both the front and rear sides of the bottom of the moving trolley (1), and each anti-skid adjustment component (21) comprises a positioning plate (211), an adjustment rod (212) and an anti-skid base (213). The positioning plate (211) is fixed to the bottom of the moving trolley (1), and an adjustment nut (214) is provided at the bottom of each positioning plate (211). The upper end of the adjustment rod (212) is threadedly connected to the adjustment nut (214), and the upper end of the adjustment rod (212) passes through the positioning plate (211), and the lower end of the adjustment rod (212) is fixedly connected to the anti-skid base (213), and the bottom of the anti-skid base (213) is provided with an anti-skid wear-resistant layer (215).

7. The intelligent trolley for convenient loading of materials according to claim 6 is characterized in that: An L-shaped positioning base plate (22) is provided on the left and right sides of the movable vehicle (1), and two positioning through holes (23) are provided on the transverse plate of the L-shaped positioning base plate (22).

Images