Rapid moving platform for photovoltaic power generation construction

Abstract

The invention relates to the technical field of construction mobile platforms, and discloses a rapid mobile platform for photovoltaic power generation construction. The mobile platform comprises a mounting frame, a working platform is mounted at the top of the mounting frame, a placement platform is arranged on the side, close to the bottom, of the mounting frame and used for placing a photovoltaic panel, and a transverse conveying mechanism and a vertical conveying mechanism are connected to the placement platform; the vertical conveying mechanism comprises a conveying frame, a sleeve frame, a fixing table and a vertical driving assembly. According to the mobile platform, the placing platform used for placing the photovoltaic panel is arranged at the position, close to the bottom, of the mounting frame, the photovoltaic panel is placed on the placing platform, so that the whole mobile platform is more stable, the transverse conveying assembly and the vertical conveying assembly are arranged, and the photovoltaic panel is conveyed to the side edge of the operation platform; and through the arrangement, the gravity center of the mobile platform is prevented from being too high, and the overall stability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction mobile platforms, and particularly relates to a rapid mobile platform for photovoltaic power generation construction. Background Art

[0002] With the continuous development of social economy, the coverage rate of photovoltaic power generation is becoming wider and wider. During the laying process of photovoltaic power generation equipment, in order to ensure that the photovoltaic panels can obtain sufficient sunlight angles and light intensities, the photovoltaic panels are usually set at positions between 1.5 meters and 2.5 meters above the ground. Therefore, a mobile platform is required for the installation of photovoltaic panels.

[0003] When installing existing photovoltaic panels, usually a construction worker on the ground transfers the photovoltaic panel to a construction worker on the mobile platform, and then the user on the mobile platform installs the photovoltaic panel. It is very inconvenient to use. If placing platforms are directly arranged on both sides of the working platform at the top of the mobile platform to place the photovoltaic panels, it will cause the center of gravity of the entire mobile platform to be too high, affecting the stability of the mobile platform, thus resulting in construction safety problems. Therefore, a device is designed to solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to provide a mobile platform with a simple structure and reasonable design to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] A rapid mobile platform for photovoltaic power generation construction includes an installation frame. A working platform is installed on the top of the installation frame. A placing platform is provided on one side of the installation frame near the bottom for placing photovoltaic panels. A horizontal conveying mechanism and a vertical conveying mechanism are connected to the placing platform;

[0007] The vertical conveying mechanism includes a conveying frame, a sleeve frame, a fixed platform, and a vertical driving component. The vertical driving component drives the conveying frame to move up and down. A moving member is connected to the installation frame. The fixed platform is fixedly connected to the surface of the placing platform. The horizontal conveying component drives the photovoltaic panel to move onto the fixed platform. When the conveying frame moves down, the moving member controls the sleeve frame to be sleeved outside the photovoltaic panel and drives the sleeve frame to move into the conveying frame.

[0008] As a further optimized solution of the present invention, the horizontal conveying mechanism includes a conveyor belt and a spiral conveyor rod. The conveyor belt is installed on the placement platform. There are two groups of spiral conveyor rods which are symmetrically arranged. The two opposite side edges of the photovoltaic panel are clamped into the spiral grooves on the surfaces of the two groups of spiral conveyor rods and are vertically placed on the surface of the conveyor belt. The surface of the placement platform is fixedly connected with a first fixing plate and a second fixing plate. The two ends of the spiral conveyor rod are connected to the surfaces of the first fixing plate and the second fixing plate through rotating shafts. One end of the rotating shaft penetrates through the second fixing plate and is connected with a driving mechanism I for driving the spiral conveyor rod to rotate.

[0009] As a further optimized solution of the present invention, there is a clamping mechanism on the two groups of first fixing plates for clamping the photovoltaic panel on the fixing table. The clamping mechanism includes two groups of clamping plates. Slots are opened on the two opposite side surfaces of the two groups of first fixing plates. The two groups of clamping plates are slidably connected to the inner walls of the slots. One side surface of the clamping plate located in the slot is fixedly connected with a second spring. One end of the second spring is fixedly connected to the inner wall of the slot.

[0010] As a further optimized solution of the present invention, the upper surface of the clamping plate is an inclined surface. Pressing blocks are fixedly connected to both sides of the sleeve frame and near the bottom edge.

[0011] As a further optimized solution of the present invention, the moving part includes a column connected to the placement platform. A slide rail is opened on the surface of the column. A slider is fixedly connected to the surface of the sleeve frame. The slide rail cooperates with the slider to control the movement of the sleeve frame.

[0012] As a further optimized solution of the present invention, the slide rail includes an ascending part and a descending part. The ascending part and the descending part are connected end to end. Anti-retrograde components are arranged at the positions where the inner walls of the slide rail are close to the connection of the ascending part and the descending part;

[0013] The anti-retrograde component includes a clamping groove opened on the inner wall of the slide rail. An inclined block is slidably connected in the clamping groove. One end face of the inclined block located in the clamping groove is connected with a first spring. One end of the first spring is connected to the inner wall of the slot.

[0014] As a further optimized solution of the present invention, a sleeve ring is fixedly connected to the side surface of the conveying frame far from the sleeve frame. A sliding column is fixedly connected to the side surface of the sleeve frame close to the conveying frame. One end of the sliding column penetrates through the conveying frame and the sleeve ring.

[0015] As a further optimized solution of the present invention, the vertical driving component includes a reciprocating screw, a sliding block and a driving mechanism II. One end of the sliding block is fixedly connected to the surface of the conveying frame, and the other end is slidably connected to the thread of the reciprocating screw. The reciprocating screw is connected to the driving end of the driving mechanism II.

[0016] As a further optimized solution of the present invention, the first driving mechanism includes a first driving member, a synchronous belt, two sets of synchronous pulleys, a driving gear and a driven gear. One set of synchronous pulleys is correspondingly connected to one end of a rotating shaft close to the second fixing plate, the driven gear is connected to one end of the other rotating shaft close to the second fixing plate, the other set of synchronous pulleys is rotatably connected to the placing platform and coaxially connected to the driving gear, the driving gear meshes with the driven gear, the synchronous belt is sleeved on the surfaces of the two sets of synchronous pulleys, and one end of the rotating shaft away from the driven gear close to the second fixing plate is connected to the driving end of the first driving member.

[0017] The beneficial effects of the present invention are as follows: The placing platform for placing the photovoltaic panel is arranged at a position close to the bottom of the mounting frame. By placing the photovoltaic panel on the placing platform, the whole mobile platform is made more stable. And a transverse conveying assembly and a vertical conveying assembly are provided to convey the photovoltaic panel to the side of the working platform, so as to facilitate the construction workers to install the photovoltaic panel. Through this kind of setting, the center of gravity of the mobile platform is prevented from being too high, and the overall stability is increased. Brief Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the structural schematic diagram of the transverse conveying mechanism of the present invention;

[0020] Figure 3 is the structural schematic diagram of the vertical conveying mechanism of the present invention;

[0021] Figure 4 is the structural schematic diagram of the slide rail of the present invention;

[0022] Figure 5 is the structural schematic diagram of the vertical driving assembly of the present invention;

[0023] Figure 6 is the structural schematic diagram of the first driving mechanism of the present invention.

[0024] In the figure: 1, mounting frame; 2, working platform; 3, placing platform; 4, transverse conveying mechanism; 41, conveyor belt; 42, spiral conveying rod; 43, first fixing plate; 44, second fixing plate; 5, vertical conveying mechanism; 51, conveying frame; 52, sleeve frame; 53, fixed platform; 6, moving member; 61, column; 62, slide rail; 621, upward part; 622, downward part; 63, slider; 64, collar; 65, sliding column; 7, reciprocating screw; 71, sliding block; 8, clamping mechanism; 81, clamping plate; 82, clamping groove; 83, second spring; 84, pressing block; 9, first driving mechanism; 91, first driving member; 92, synchronous belt; 93, synchronous pulley; 94, driving gear; 95, driven gear; 10, anti-retrograde component; 101, clamping groove; 102, inclined block; 103, first spring. Detailed implementation manners

[0025] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0026] Embodiment 1

[0027] Reference Figure 1 And Figure 2 Referring to the partial structure shown in

[0028] and

[0029] A fast-moving platform for photovoltaic power generation construction includes an installation frame 1. A working platform 2 is installed on the top of the installation frame 1. One side of the installation frame 1 near the bottom is provided with a placement platform 3 for placing photovoltaic panels. A horizontal conveying mechanism 4 and a vertical conveying mechanism 5 are connected to the placement platform 3;

[0030] The vertical conveying mechanism 5 includes a conveying frame 51, a sleeve frame 52, a fixed platform 53 and a vertical driving assembly. The vertical driving assembly drives the conveying frame 51 to move up and down. A moving member 6 is connected to the installation frame 1. The fixed platform 53 is fixedly connected to the surface of the placement platform 3. The horizontal conveying assembly 4 drives the photovoltaic panel to move onto the fixed platform 53. When the conveying frame 51 moves down, the moving member 6 controls the sleeve frame 52 to sleeved outside the photovoltaic panel and drives the sleeve frame 52 to move into the conveying frame 51.

[0031] It should be noted that the working platform 2 can be fixedly connected to a position near the top of the installation frame 1 or can be set to be liftable;

[0032] When the working platform 2 is fixedly connected to the installation frame 1, a ladder can be provided on one side of the installation frame 1, and construction workers can climb from the ladder to the working platform 2;

[0033] In this embodiment, the vertical driving mechanism can be any mechanical structure capable of linear motion. Specifically, it can include a motor (such as a servo motor or a stepper motor) and a lead screw mechanism. The motor drives the lead screw mechanism to drive the conveying frame 51 to move up and down. It can also be an electric push rod, a hydraulic rod, a pneumatic rod, etc.

[0034] It should be noted that the moving member 6 in this embodiment can be any mechanical structure capable of driving the sleeve frame 52 to move. It can be an electric push rod, a hydraulic rod, a pneumatic rod, etc. Specifically, the moving member 6 is connected to the surface of the conveying frame 51, and its driving end extends into the conveying frame 51 and is connected to the surface of the sleeve frame 52.

[0035] Furthermore, the lateral conveying mechanism 4 includes a conveyor belt 41 and a spiral conveyor rod 42. The conveyor belt 41 is installed on the placement platform 3. There are two sets of spiral conveyor rods 42 which are symmetrically arranged. The two corresponding side edges of the photovoltaic panel are clamped into the spiral grooves on the surfaces of the two sets of spiral conveyor rods 42 and are vertically placed on the surface of the conveyor belt 41. A first fixing plate 43 and a second fixing plate 44 are fixedly connected to the surface of the placement platform 3. The two ends of the spiral conveyor rod 42 are connected to the surfaces of the first fixing plate 43 and the second fixing plate 44 through rotating shafts. One end of the rotating shaft penetrates through the second fixing plate 44 and is connected to a driving mechanism 9 for driving the spiral conveyor rod 42 to rotate.

[0036] It should be noted that the lateral conveying mechanism can be one set or two sets.

[0037] In this embodiment, the driving mechanism 9 can be a servo motor, a stepper motor, etc.

[0038] Reference Figures 1 to 3 Referring to the shown partial structure, there is a clamping mechanism 8 on the two sets of first fixing plates 43 for clamping the photovoltaic panel to the fixing table 53. The clamping mechanism 8 includes two sets of clamping plates 81. Slots 82 are opened on the corresponding two side surfaces of the two sets of first fixing plates 43. The two sets of clamping plates 81 are slidably connected to the inner walls of the slots 82. A second spring 83 is fixedly connected to one side surface of the clamping plate 81 located in the slot 82, and one end of the second spring 83 is fixedly connected to the inner wall of the slot 82.

[0039] Furthermore, the upper surface of the clamping plate 81 is an inclined surface, and pressing blocks 84 are fixedly connected to the two sides of the sleeve frame 52 near the bottom edge.

[0040] It should be noted that the inclined surface on the upper surface of the clamping plate 81 can be a flat surface or an arc surface.

[0041] In actual use, the photovoltaic panel is vertically placed at one end of the spiral conveyor rod 42 away from the vertical conveyor mechanism 5. Through the cooperation of the spiral conveyor rod 42 and the conveyor belt 41, the photovoltaic panels can be conveyed in sequence. Each time the spiral conveyor rod 42 rotates one circle, one photovoltaic panel can be conveyed. When the photovoltaic panel is moved to the fixed platform 53 by the spiral conveyor rod 42, the clamping plates 81 block the two side edges of the photovoltaic panel, and cooperate with the spiral conveyor rod 42 to fix the photovoltaic panel on the fixed platform 53, so that the photovoltaic panel will not fall over. At this time, the vertical drive assembly is started to drive the conveying frame 51 to move downward. During the downward movement of the conveying frame 51, the moving member 6 drives the sleeve frame 52 to move away from the conveying frame 51 and move above the photovoltaic panel. As the conveying frame 51 moves downward, the sleeve frame 52 will first cover the photovoltaic panel, and then the pressing block 84 contacts the upper surface of the clamping plate 81 and presses the clamping plate 81 into the card slot 82. Then the moving member 6 drives the sleeve frame 52 to move, driving the photovoltaic panel to move to one end of the fixed platform 53 close to the conveying frame 51. Until the conveying frame 51 moves down to the bottom, the moving member 6 is started again and drives the sleeve frame 52 to move into the conveying frame 51. Finally, the vertical drive mechanism drives the conveying frame 51 to move upward, moving the photovoltaic panel to the side of the working platform 2.

[0042] Embodiment 2

[0043] This embodiment is further improved on the basis of Embodiment 1, making the placement platform 3 symmetrically arranged and changing the structure of the moving member 6. The structure of the moving member 6 in this embodiment is simple and the manufacturing cost is low. Specifically, referring to Figures 1 to 3 the partial structure shown, the moving member 6 includes a column 61 connected to the placement platform 3. A slide rail 62 is provided on the surface of the column 61. A slider 63 is fixedly connected to the surface of the sleeve frame 52. The slide rail 62 cooperates with the slider 63 to control the movement of the sleeve frame 52.

[0044] Referring to Figure 4 the structure shown, the slide rail 62 includes an upward part 621 and a downward part 622. The upward part 621 and the downward part 622 are connected end to end. Anti-retrograde components 10 are provided at the positions where the inner walls of the slide rail 62 are close to the connection of the upward part 621 and the downward part 622;

[0045] The anti-retrograde component 10 includes a clamping groove 101 opened on the inner wall of the slide rail 62. An inclined block 102 is slidably connected in the clamping groove 101. One end surface of the inclined block 102 located in the clamping groove 101 is connected with a first spring 103. One end of the first spring 103 is connected to the inner wall of the clamping groove 101.

[0046] In actual use, when the slider 63 moves to the position where the upper running part 621 and the lower running part 622 are connected, the slider 63 contacts the inclined surface of the inclined block 102 and presses the inclined block 102 into the clamping groove 101. When the slider 63 moves to the other side of the inclined block 102, the first spring 103 pops the inclined block 102 out of the clamping groove 101, thereby preventing the slider 63 from moving backward.

[0047] It should be noted that both the upper running part 621 and the lower running part 622 are composed of a straight running lane and an inclined running lane. The lower running part 622 includes two sets of alternately connected straight running lanes and inclined running lanes. The upper running part 621 includes one set of straight running lanes and one set of inclined running lanes. During the upward movement of the conveying frame 51, it first moves in the straight running lane and then moves into the inclined running lane, and then moves into the straight running lane of the lower running part through the inclined running lane. When the conveying frame 51 moves downward, after passing through one set of inclined running lanes, the sleeve frame 52 is moved to the side of the fixed platform 53 close to the conveying frame 51. After passing through the second set of inclined running lanes, the sleeve frame 52 is moved into the straight running lane of the upper running part 621.

[0048] Reference Figure 2 and Figure 3 Referring to the partial structure shown, a collar 64 is fixedly connected to the surface of the conveying frame 51 away from the sleeve frame 52, and a sliding column 65 is fixedly connected to the surface of the sleeve frame 52 close to the conveying frame 51. One end of the sliding column 65 penetrates through the conveying frame 51 and the collar 64.

[0049] It should be noted that the sliding column 65 slides along the inner wall of the collar 64, and the two cooperate to limit the movement of the sleeve frame 52.

[0050] In this embodiment, a structure of a vertical driving assembly is also provided. Specifically, referring to Figure 5 the structure shown, the vertical driving assembly includes a reciprocating screw 7, a sliding block 71, and a driving mechanism two. One end of the sliding block 71 is fixedly connected to the surface of the conveying frame 51, and the other end is slidably connected to the thread of the reciprocating screw 7. The reciprocating screw 7 is connected to the driving end of the driving mechanism two.

[0051] Reference Figure 1 and Figure 6 Referring to the partial structure shown, the driving mechanism one 9 includes a driving member one 91, a synchronous belt 92, two sets of synchronous wheels 93, a driving gear 94, and a driven gear 95. One set of the synchronous wheels 93 is correspondingly connected to one end of a rotating shaft close to the second fixing plate 44. The driven gear 95 is connected to one end of the other rotating shaft close to the second fixing plate 44. The other set of synchronous wheels 93 is rotatably connected to the placing platform 3 and is coaxially connected to the driving gear 94. The driving gear 94 meshes with the driven gear 95. The synchronous belt 92 is sleeved on the surfaces of the two sets of synchronous wheels 93. One end of the rotating shaft away from the driven gear 95 close to the second fixing plate 44 is connected to the driving end of the driving member one 91.

[0052] In this embodiment, the first driving member 91 is a servo motor, a stepper motor, etc.

[0053] In actual use, the first driving mechanism 9 can make the two screw conveyors 42 rotate in opposite directions simultaneously.

[0054] In this embodiment, the second driving mechanism is a servo motor, a stepper motor, etc. In actual operation, starting the second driving mechanism can drive the reciprocating screw 7 to rotate, so that the conveying frame 51 slides up and down along the surface of the column 61.

[0055] Embodiment Three

[0056] This embodiment makes further improvements on the basis of Embodiment Two. Specifically, referring to Figure 1 and Figure 6 the shown structure, the two reciprocating screws 7 on the same side of the two placing platforms 3 can be connected by a synchronous belt drive mechanism. Any side can be connected, so as to reduce the use of motors. In order to improve the stability of the conveying of the reciprocating screw 7, the reciprocating screws 7 on the same placing platform 3 can be symmetrically arranged, and the two reciprocating screws 7 on the same placing platform 3 can be driven by an 8-shaped belt drive mechanism, or can also be driven by a structure similar to the first driving mechanism 9 in Embodiment Two. Through the above method, one second driving mechanism can drive four groups of reciprocating screws 7 at the same time.

[0057] In this embodiment, two sets of symmetric transverse conveying mechanisms 4 and the first driving mechanism 9 can be arranged on one placing platform 3, and other corresponding structures are also symmetrically arranged. Two sets of symmetric sleeve frames 52 are correspondingly arranged in one conveying frame 51, and the column 61 is located between the two sleeve frames 52. To make the two first driving mechanisms 9 interlock, one driving member 91 can be removed, and the two driven gears 95 can be meshed.

[0058] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A photovoltaic power generation construction fast moving platform, comprising a mounting frame (1), a working platform (2) being mounted on the top of the mounting frame (1), characterized in that: A placement platform (3) is provided on one side of the mounting frame (1) close to the bottom, for placing photovoltaic panels, and a horizontal conveying mechanism (4) and a vertical conveying mechanism (5) are connected to the placement platform (3); The vertical conveying mechanism (5) comprises a conveying frame (51), a sleeve frame (52), a fixed platform (53) and a vertical driving assembly. The vertical driving assembly drives the conveying frame (51) to move up and down. The mounting frame (1) is connected with a moving part (6). The fixed platform (53) is fixedly connected to the surface of the placement platform (3). The horizontal conveying assembly (4) drives the photovoltaic panel to move onto the fixed platform (53). When the conveying frame (51) moves downward, the moving part (6) controls the sleeve frame (52) to be sleeved on the outer side of the photovoltaic panel and drives the sleeve frame (52) to move into the conveying frame (51).

2. A photovoltaic power generation construction fast moving platform according to claim 1, characterized in that: The transverse conveying mechanism (4) comprises a conveyor belt (41) and a spiral conveying rod (42). The conveyor belt (41) is installed on the placement platform (3). The spiral conveying rod (42) is provided in two groups and is symmetrically arranged. The corresponding two side edges of the photovoltaic panel are clamped into the spiral grooves on the surfaces of the two groups of spiral conveying rods (42) and are vertically placed on the surface of the conveyor belt (41). The surface (3) of the placement platform is fixedly connected with a first fixed plate (43) and a second fixed plate (44). The two ends of the spiral conveying rod (42) are connected to the surfaces of the first fixed plate (43) and the second fixed plate (44) through a rotating shaft. One end of the rotating shaft passes through the second fixed plate (44) and is connected to a driving mechanism (9) for driving the spiral conveying rod (42) to rotate.

3. A photovoltaic power generation construction fast moving platform according to claim 2, characterized in that: The two groups of the first fixing plates (43) are provided with a clamping mechanism (8) for clamping the photovoltaic panel on the fixing platform (53); the clamping mechanism (8) comprises two groups of clamping plates (81); corresponding side surfaces of the two groups of the first fixing plates (43) are provided with clamping grooves (82); the two groups of the clamping plates (81) are slidably connected to the inner wall of the clamping groove (82); a second spring (83) is fixedly connected to a surface of one side of the clamping plate (81) located in the clamping groove (82); one end of the second spring (83) is fixedly connected to the inner wall of the clamping groove (82).

4. A photovoltaic power generation construction fast moving platform according to claim 3, characterized in that: The upper surface of the clamping plate (81) is an inclined surface, and pressing blocks (84) are fixedly connected to both sides of the sleeve frame (52) and close to the bottom edge.

5. A photovoltaic power generation construction fast moving platform according to claim 1, characterized in that: The moving member (6) comprises a column (61) connected to the placement platform (3); a slide rail (62) is provided on the surface of the column (61); a slider (63) is fixedly connected to the surface of the sleeve frame (52); and the slide rail (62) cooperates with the slider (63) to control the movement of the sleeve frame (52).

6. A photovoltaic power generation construction fast moving platform according to claim 5, characterized in that: The slide rail (62) comprises an upward portion (621) and a downward portion (622), the upward portion (621) and the downward portion (622) are connected end to end, and an anti-reverse assembly (10) is provided on the inner wall of the slide rail (62) near the connection position between the upward portion (621) and the downward portion (622); The anti-reverse assembly (10) comprises a clamping groove (101) provided on the inner wall of the slide rail (62), a slidably connected inclined block (102) in the clamping groove (101), a spring (103) connected to one end surface of the inclined block (102) located in the clamping groove (101), and one end of the spring (103) connected to the inner wall of the clamping groove (101).

7. A photovoltaic power generation construction fast moving platform according to claim 5, characterized in that: A collar (64) is fixedly connected to a surface of a side of the conveying frame (51) away from the sleeve frame (52), and a sliding column (65) is fixedly connected to a surface of a side of the sleeve frame (52) close to the conveying frame (51), and one end of the sliding column (65) passes through the conveying frame (51) and the collar (64).

8. The photovoltaic power generation construction fast moving platform according to claim 1, characterized in that: The vertical drive assembly comprises a reciprocating screw (7), a sliding block (71) and a second drive mechanism, one end of the sliding block (71) is fixedly connected to the surface of the conveying frame (51), and the other end is slidably connected in the thread of the reciprocating screw (7), and the reciprocating screw (7) is connected to the driving end of the second drive mechanism.

9. A photovoltaic power generation construction fast moving platform according to claim 2, characterized in that: The driving mechanism (9) comprises a driving member (91), a synchronous belt (92), two sets of synchronous wheels (93), a driving gear (94) and a driven gear (95), wherein one set of the synchronous wheels (93) is correspondingly connected to one end of a set of rotating shafts close to the second fixed plate (44), the driven gear (95) is connected to one end of another set of rotating shafts close to the second fixed plate (44), the other set of synchronous wheels (93) is rotatably connected to the placement platform (3) and is coaxially connected to the driving gear (94), the driving gear (94) is meshed with the driven gear (95), the synchronous belt (92) is sleeved on the surfaces of the two sets of synchronous wheels (93), and one end of the rotating shaft close to the second fixed plate (44) away from the driven gear (95) is connected to the driving end of the driving member (91).

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