Photovoltaic panel mounting mechanism
By designing a photovoltaic panel mounting mechanism including a hydraulic push rod, an orientation adjustment mechanism and a lifting displacement mechanism, the stability problem of the photovoltaic panel mounting frame when moving and rotating on rough ground in the prior art is solved, and the stable transportation and efficient installation of the photovoltaic panel are achieved.
Patent Information
- Application Number
- CN202421834354.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-31
AI Technical Summary
When the existing photovoltaic panel mounting frame moves and rotates on rough ground, it is difficult to transport stably, which can easily cause photovoltaic panels to bump and affect installation efficiency and quality.
A photovoltaic panel installation mechanism is designed, including a lower fixing plate, an upper lifting plate, a hydraulic push rod, a direction adjustment mechanism and a lifting displacement mechanism. Through the cooperation of the hydraulic push rod and the upper lifting plate, the tilt lift of the photovoltaic plate is achieved; the orientation angle of the photovoltaic plate is easily adjusted to the orientation of the photovoltaic plate; the lifting and displacement mechanism provides support and displacement functions, which is convenient for installation and handling.
The device improves the stable movement and rotation ability of the photovoltaic panel on rough ground, reduces the bumps of the photovoltaic panel, improves the installation efficiency and quality, and facilitates the operation of staff.
Smart Images

Figure CN223052971U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of photovoltaic panel installation mechanisms, and specifically relates to a photovoltaic panel installation mechanism. Background Technique
[0002] Existing photovoltaic panels are fixed and transported through installation frames and the like to facilitate installation operations in complex environments. Most of the existing installation frames use universal wheels for movement and support. Although they can handle the handling and steering adjustment of photovoltaic panels at the same time, it is inherently difficult to move the entire installation frame on relatively rough ground. If rotation adjustment is carried out again, it is likely to have negative impacts such as jolting on the photovoltaic panels, and there is room for improvement. Content of the Utility Model
[0003] Therefore, in order to solve the above deficiencies, the utility model provides a photovoltaic panel installation mechanism here.
[0004] The utility model is implemented as follows. A photovoltaic panel installation mechanism is constructed, and the device includes:
[0005] Lower fixing plates, two inclined limiting plates are fixedly connected to the top surfaces of the two lower fixing plates;
[0006] Upper lifting plate, the rear end of the upper lifting plate is hinged to the front ends of the two lower fixing plates;
[0007] Among them, two sliding blocks are slidably connected to the bottom of the front end of the upper lifting plate, and the output shaft of the hydraulic push rod is rotatably connected to the bottom of the front end of the upper lifting plate through the two sliding blocks. The two hydraulic push rods are fixedly connected to the top surface of the load-bearing fixing plate;
[0008] Orientation adjustment mechanism, the bottom ends of the outer sides of the two lower fixing plates are slidably connected to the top surface of the orientation adjustment mechanism through pulley support rods;
[0009] Lifting displacement mechanism, the lifting displacement mechanism is fixedly connected to the bottom of the orientation adjustment mechanism.
[0010] Preferably, the orientation adjustment mechanism includes:
[0011] Bottom fixed ring, a cross-shaped fixing frame is fixedly connected to the inner side of the bottom fixed ring;
[0012] Among them, a rotating support shaft is rotatably connected to the middle of the top surface of the cross-shaped fixing frame, a transmission rod is fixedly connected to the top surface of the rotating support shaft, and a steering component is fixedly connected to the rear end of the transmission rod.
[0013] Preferably, the steering component is slidably connected to the top surface of the annular guide rail, the annular guide rail is fixedly connected to the top surface of the bottom fixed ring, a toothed inner ring is provided inside the bottom fixed ring, and a spherical guide rail is provided on the top surface of the bottom fixed ring.
[0014] Preferably, the steering assembly includes:
[0015] A first fixing plate, and four limiting pulleys are fixedly connected to the bottom of the first fixing plate;
[0016] Among them, a first driving motor is fixedly connected to the top surface of the first fixing plate, the output shaft of the first driving motor penetrates and is rotatably connected to the top surface of the first fixing plate, and a transmission gear is fixedly connected to the bottom of the output shaft of the first driving motor.
[0017] Preferably, inner and outer sliding grooves are provided on the inner and outer sides of the upper end of the annular guide rail. The steering assembly is slidably connected to the inner and outer sliding grooves of the annular guide rail through the lower ends of the four limiting pulleys. The outer end of the transmission gear meshes with the toothed inner ring, and the left and right sides of the upper end of the transmission rod are fixedly connected to the two lower fixing plates.
[0018] Preferably, the lifting displacement mechanism includes:
[0019] A second driving motor, which is fixedly connected to the middle of the top surface of the I-shaped fixing frame, and the I-shaped fixing frame is located at the bottom of the bottom fixing ring and the bottom of the cross fixing frame;
[0020] Among them, four hollow support cylinders are fixedly connected to the bottom of the bottom fixing ring, and the four hollow support cylinders are fixedly connected to the front and rear parts of the left and right ends of the I-shaped fixing frame. The inner sides of the lower ends of the four hollow support cylinders are slidably connected to the upper ends of the sliding support columns.
[0021] Preferably, moving pulleys are fixedly connected to the bottoms of the four sliding support columns. The inner sides of the upper ends of the four sliding support columns are rotatably connected to the outer ends of the transmission short rods. Through holes are provided at the inner ends of the four transmission short rods 307 and are fixedly connected to the outer ends of the two transmission long shafts 308. The outer ends of the two transmission long shafts penetrate and are rotatably connected to the lower ends of the first fixing members.
[0022] Preferably, the four first fixing members are fixedly connected to the bottoms of the left and right ends of the I-shaped fixing frame, and two second fixing members are fixedly connected to the middle of the bottom of the I-shaped fixing frame. Through holes are provided at the lower ends of the two second fixing members and are rotatably connected to the middle parts of the transmission long shafts. Worms are fixedly connected to the middle parts of the two transmission long shafts. The output shaft of the second driving motor penetrates and is rotatably connected to the middle of the top surface of the I-shaped fixing frame, and a worm is fixedly connected to the output shaft of the second driving motor. The inner ends of the two worms mesh with the lower ends of the worm.
[0023] Preferably, a limiting baffle is provided at the junction of the lower end of the sliding support column and the moving pulley. There is a certain distance between the top surface of the I-shaped fixing frame and the bottom of the cross-shaped fixing frame. The inner surface of the hollow support cylinder is rough. The pulley support rod consists of a support rod and a sliding ball, and the pulley support rod is slidably connected to the inner side of the spherical rail through the sliding ball. The load-bearing fixing plate is provided with a semi-circular slider, and the load-bearing fixing plate is slidably connected to the inner side of the spherical rail through the semi-circular slider.
[0024] The utility model has the following advantages: The present utility model provides a photovoltaic panel mounting mechanism through improvement. Compared with the same type of equipment, the following improvements are made:
[0025] For the photovoltaic panel mounting mechanism of the present utility model, a placement and transportation of the photovoltaic panel is carried out through the setting of an orientation adjustment mechanism, and the orientation angle of the photovoltaic panel is conveniently adjusted through the orientation adjustment mechanism. Moreover, the photovoltaic panel is tilted and lifted through the cooperation of a hydraulic push rod and a lifting plate, so as to facilitate the handling and installation by the staff. The lifting and displacement mechanism provides a simple support and displacement function for the orientation adjustment mechanism and the photovoltaic panel, and further adjusts the orientation adjustment mechanism and the photovoltaic panel by adjusting the lifting and displacement mechanism, further facilitating the handling and installation by the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic structural diagram of the present utility model;
[0027] Figure 2 is a schematic structural diagram of the orientation adjustment mechanism of the present utility model;
[0028] Figure 3 is a schematic structural diagram of the steering assembly of the present utility model;
[0029] Figure 4 is a schematic structural diagram of the lifting and displacement mechanism of the present utility model.
[0030] Wherein: lower fixing plate - 101, inclined limiting plate - 102, upper lifting plate - 103, hydraulic push rod - 104, load-bearing fixing plate - 105, pulley support rod - 106, orientation adjustment mechanism - 201, bottom fixing ring - 202, cross-shaped fixing frame - 203, rotating support shaft - 204, transmission rod - 205, steering assembly - 206, annular rail - 207, toothed inner ring - 208, spherical rail - 209, first fixing plate - 210, limiting pulley - 211, first driving motor - 212, transmission gear - 213, lifting and displacement mechanism - 301, second driving motor - 302, I-shaped fixing frame - 303, hollow support cylinder - 304, sliding support column - 305, moving pulley - 306, transmission short rod - 307, transmission long shaft - 308, first fixing member - 309, second fixing member - 310, worm gear - 311, worm - 312. Detailed implementation mode
[0031] The following combines the attached Figures 1 to 4 The principles and features of the present utility model will be described below. The examples given are only used to explain the present utility model and are not used to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present utility model.
[0032] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0034] Embodiment 1:
[0035] Please refer to Figure 1 、 Figure 2 and Figure 3 , a photovoltaic panel installation mechanism of the present utility model, comprising:
[0036] Lower fixed plate 101, two inclined limiting plates 102 are fixedly connected to the top surface of the two lower fixed plates 101;
[0037] Upper lifting plate 103, the rear end of the upper lifting plate 103 is hinged to the front end of the two lower fixed plates 101;
[0038] Among them, two sliding blocks are slidably connected to the bottom of the front end of the upper lifting plate 103, and the output shaft of the hydraulic push rod 104 is rotatably connected to the bottom of the front end of the upper lifting plate 103 through the two sliding blocks, so as to lift the front end of the upper lifting plate 103. The two hydraulic push rods 104 are fixedly connected to the top surface of the load-bearing fixed plate 105, so as to rotate with the upper lifting plate 103 and provide support;
[0039] The orientation adjustment mechanism 201, the bottom ends of the outer sides of the two lower fixing plates 101 are slidably connected to the top surface of the orientation adjustment mechanism 201 through the pulley support rods 106;
[0040] The lifting displacement mechanism 301, the lifting displacement mechanism 301 is fixedly connected to the bottom of the orientation adjustment mechanism 201.
[0041] The orientation adjustment mechanism 201 includes:
[0042] The bottom fixing ring 202, the inner side of the bottom fixing ring 202 is fixedly connected with a cross fixing frame 203, which provides support for the inner end of the steering component 206;
[0043] Among them, the middle part of the top surface of the cross fixing frame 203 is rotatably connected with a rotating support shaft 204, the top surface of the rotating support shaft 204 is fixedly connected with a transmission rod 205, the rear end of the transmission rod 205 is fixedly connected with a steering component 206, the steering component 206 is slidably connected to the top surface of the annular guide rail 207, the annular guide rail 207 is fixedly connected to the top surface of the bottom fixing ring 202, and a toothed inner ring 208 is arranged inside the bottom fixing ring 202 to cooperate with the steering component 206 for orientation adjustment, and a spherical guide rail 209 is arranged on the top surface of the bottom fixing ring 202 to prevent the pulley support rod 106 and the load-bearing fixing plate 105 from derailing.
[0044] The steering component 206 includes:
[0045] The first fixing plate 210, four limiting pulleys 211 are fixedly connected to the bottom of the first fixing plate 210;
[0046] Among them, a first driving motor 212 is fixedly connected to the top surface of the first fixing plate 210, the output shaft of the first driving motor 212 penetrates and is rotatably connected to the top surface of the first fixing plate 210, the bottom of the output shaft of the first driving motor 212 is fixedly connected with a transmission gear 213, inner and outer sliding grooves are arranged on the inner side and the outer side of the upper end of the annular guide rail 207, the steering component 206 is slidably connected to the inner and outer sliding grooves of the annular guide rail 207 through the lower ends of the four limiting pulleys 211, the outer end of the transmission gear 213 meshes with the toothed inner ring 208, and the left and right sides of the upper end of the transmission rod 205 are fixedly connected to the two lower fixing plates 101.
[0047] The working principle of a photovoltaic panel installation mechanism based on Embodiment 1 is:
[0048] Place the photovoltaic panel flat on the top surfaces of the lower fixing plate 101 and the upper lifting plate 103, and limit the rear end of the photovoltaic panel through the inclined limiting plate 102. When it is necessary to tilt and lift the photovoltaic panel, the output shafts of the two hydraulic push rods 104 lift the front end of the upper lifting plate 103 through the two sliding blocks. At this time, the inclined limiting plate 102 limits the rear end of the photovoltaic panel, and thus the front end of the photovoltaic panel is slowly lifted;
[0049] When the orientation of the photovoltaic panel needs to be adjusted, the output shaft of the first drive motor 212 in the steering assembly 206 drives the transmission gear 213 to rotate, causing the transmission gear 213 to cooperate with the toothed inner ring 208 to displace inside the annular guide rail 207, thereby driving the first fixing plate 210 and the limit pulley 211 to displace on the annular guide rail 207, thereby driving the outer end of the transmission rod 205 to rotate with the lower end of the rotation support shaft 204 as the rotation origin, thereby driving the lower fixing plate 101 and the upper lifting plate 103 to rotate, and further completing the adjustment of the orientation of the photovoltaic panel.
[0050] Embodiment 2:
[0051] Please refer to Figure 1 and Figure 4 , a photovoltaic panel installation mechanism of the present utility model. Compared with Embodiment 1, this embodiment further includes: The lifting displacement mechanism 301 includes:
[0052] A second drive motor 302, which is fixedly connected to the middle of the top surface of the I-shaped fixing frame 303, and the I-shaped fixing frame 303 is located at the bottom of the bottom fixing ring 202 and the cross fixing frame 203;
[0053] Among them, four hollow support cylinders 304 are fixedly connected to the bottom of the bottom fixing ring 202. The four hollow support cylinders 304 are fixedly connected to the front and rear parts of the left and right ends of the I-shaped fixing frame 303. The inner sides of the lower ends of the four hollow support cylinders 304 are slidably connected to the upper ends of the sliding support columns 305. The bottoms of the four sliding support columns 305 are fixedly connected with moving pulleys 306. The inner sides of the upper ends of the four sliding support columns 305 are rotatably connected to the outer ends of the transmission short rods 307. The inner ends of the four transmission short rods 307 pass through holes and are fixedly connected to the outer ends of the two transmission long shafts 308. The outer ends of the two transmission long shafts 308 penetrate and are rotatably connected to the lower ends of the first fixing members 309. The four first fixing members 309 are fixedly connected to the bottoms of the left and right ends of the I-shaped fixing frame 303. And two second fixing members 310 are fixedly connected to the middle of the bottom of the I-shaped fixing frame 303. The through holes at the lower ends of the two second fixing members 310 are rotatably connected to the middle parts of the transmission long shafts 308. Two worm wheels 311 are fixedly connected to the middle parts of the two transmission long shafts 308. The output shaft of the second driving motor 302 penetrates and is rotatably connected to the middle of the top surface of the I-shaped fixing frame 303. And a worm 312 is fixedly connected to the output shaft of the second driving motor 302. The inner ends of the two worm wheels 311 are engaged with the lower end of the worm 312, so as to synchronously drive the multiple sliding support columns 305 to lift. A limit baffle is arranged at the junction of the lower end of the sliding support column 305 and the moving pulley 306 to limit the maximum rising distance of the sliding support column 305, thereby limiting and ensuring the maximum descending distance and its load-bearing capacity of the lifting displacement mechanism 301. There is a certain distance between the top surface of the I-shaped fixing frame 303 and the bottom of the cross fixing frame 203. The inner surface of the hollow support cylinder 304 is rough to increase the friction between the hollow support cylinder 304 and the sliding support column 305, thereby increasing the load-bearing capacity after rising. The pulley support rod 106 consists of a support rod and a sliding ball, and the pulley support rod 106 is slidably connected to the inner side of the spherical rail 209 through the sliding ball. The load-bearing fixing plate 105 is provided with a semi-circular slider, and the load-bearing fixing plate 105 is slidably connected to the inner side of the spherical rail 209 through the semi-circular slider to reduce friction for the operation of the steering assembly 206.
[0054] In this embodiment:
[0055] When it is necessary to lift the photovoltaic panel and the orientation adjustment mechanism 201 to a certain extent, the output shaft of the second driving motor 302 drives the worm 312 to rotate, thereby driving the two worm wheels 311 to rotate synchronously, thereby driving the two transmission long shafts 308 to rotate synchronously. The two transmission long shafts 308 are supported and fixed by the first fixing members 309 and the second fixing members 310. Furthermore, the two transmission long shafts 308 synchronously drive the four transmission short rods 307 to rotate, thereby driving the four sliding support columns 305 to perform vertical displacement in the corresponding hollow support cylinders 304, and then lifting the photovoltaic panel and the orientation adjustment mechanism 201 to a certain extent.
[0056] The utility model provides a photovoltaic panel installation mechanism through improvement. The photovoltaic panel is placed and transported by arranging the orientation adjustment mechanism 201, and the orientation angle of the photovoltaic panel is conveniently adjusted through the orientation adjustment mechanism 201. Moreover, the hydraulic push rod 104 cooperates with the lifting plate 103 to tilt and lift the photovoltaic panel, so as to facilitate the staff to carry out handling and installation. The lifting displacement mechanism 301 functions to simply support and displace the orientation adjustment mechanism 201 and the photovoltaic panel, and by adjusting the lifting displacement mechanism 301, the orientation adjustment mechanism 201 and the photovoltaic panel are lifted and lowered, further facilitating the staff to carry out handling and installation.
[0057] The above shows and describes the basic principles, main features and advantages of the utility model. Moreover, the standard parts used in the utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.
[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A photovoltaic panel installation mechanism, comprising: A lower fixing plate (101), wherein two inclined limiting plates (102) are fixedly connected to the top surfaces of the two lower fixing plates (101); An upper lifting plate (103), the rear end of the upper lifting plate (103) being hinged to the front ends of the two lower fixing plates (101); The front end bottom of the upper lifting plate (103) is slidably connected to two sliding blocks, and the front end bottom of the upper lifting plate (103) is rotatably connected to the output shaft of the hydraulic push rod (104) through the two sliding blocks, and the two hydraulic push rods (104) are fixedly connected to the top surface of the load-bearing fixed plate (105); it is characterized in that it also includes: The bottom of the outer ends of the two lower fixing plates (101) are slidably connected to the top surface of the orientation adjustment mechanism (201) via a pulley support rod (106); A lifting and displacement mechanism (301), wherein the lifting and displacement mechanism (301) is fixedly connected to the bottom of the orientation adjustment mechanism (201).
2. A photovoltaic panel installation mechanism according to claim 1, characterized in that: The orientation adjustment mechanism (201) comprises: A bottom fixing ring (202), wherein a cross fixing frame (203) is fixedly connected to the inner side of the bottom fixing ring (202); The middle part of the top surface of the cross fixing frame (203) is rotatably connected to a rotating support shaft (204), the top surface of the rotating support shaft (204) is fixedly connected to a transmission rod (205), and the rear end of the transmission rod (205) is fixedly connected to a steering assembly (206).
3. A photovoltaic panel installation mechanism according to claim 2, characterized in that: The steering assembly (206) is slidably connected to the top surface of the annular guide rail (207), the annular guide rail (207) is fixedly connected to the top surface of the bottom fixing ring (202), a toothed inner ring (208) is provided on the inner side of the bottom fixing ring (202), and a spherical guide rail (209) is provided on the top surface of the bottom fixing ring (202).
4. A photovoltaic panel installation mechanism according to claim 3, characterized in that: The steering assembly (206) comprises: A first fixed plate (210), wherein four limiting pulleys (211) are fixedly connected to the bottom of the first fixed plate (210); The top surface of the first fixed plate (210) is fixedly connected to a first drive motor (212); an output shaft of the first drive motor (212) passes through and is rotatably connected to the top surface of the first fixed plate (210); and a transmission gear (213) is fixedly connected to the bottom of the output shaft of the first drive motor (212).
5. A photovoltaic panel installation mechanism according to claim 4, characterized in that: Inner and outer sliding grooves are provided on the inner and outer sides of the upper end of the annular guide rail (207); the steering assembly (206) is slidably connected to the inner and outer sliding grooves of the annular guide rail (207) through the lower ends of four limiting pulleys (211); the outer end of the transmission gear (213) is meshed with the toothed inner ring (208); and the left and right side surfaces of the upper end of the transmission rod (205) are fixedly connected to the two lower fixed plates (101).
6. A photovoltaic panel installation mechanism according to claim 5, characterized in that: The lifting and displacement mechanism (301) comprises: A second drive motor (302), the second drive motor (302) being fixedly connected to the middle of the top surface of the I-shaped fixing frame (303), and the I-shaped fixing frame (303) is located at the bottom of the bottom fixing ring (202) and the cross fixing frame (203); Among them, four hollow support tubes (304) are fixedly connected to the bottom of the bottom fixing ring (202), and the four hollow support tubes (304) are fixedly connected to the front and rear parts of the left and right ends of the industrial type fixing frame (303), and the inner sides of the lower ends of the four hollow support tubes (304) are slidably connected to the upper ends of the sliding support columns (305).
7. A photovoltaic panel installation mechanism according to claim 6, characterized in that: The bottom of the four sliding support columns (305) is fixedly connected with a movable pulley (306); the inner sides of the upper ends of the four sliding support columns (305) are rotatably connected to the outer ends of the transmission short rods (307); the inner ends of the four transmission short rods (307) are through holes and are fixedly connected to the outer ends of the two transmission long shafts (308); the outer ends of the two transmission long shafts (308) pass through and are rotatably connected to the lower end of the first fixing member (309).
8. A photovoltaic panel installation mechanism according to claim 7, characterized in that: The four first fixing members (309) are fixedly connected to the bottom of the left and right ends of the I-shaped fixing frame (303), and two second fixing members (310) are fixedly connected to the middle of the bottom of the I-shaped fixing frame (303), the through holes at the lower ends of the two second fixing members (310) are rotatably connected to the middle of the transmission long shaft (308), the middle of the two transmission long shafts (308) are fixedly connected with a worm gear (311), the output shaft of the second drive motor (302) passes through and is rotatably connected to the middle of the top surface of the I-shaped fixing frame (303), and the output shaft of the second drive motor (302) is fixedly connected with a worm (312), and the inner ends of the two worm gears (311) are meshed with the lower ends of the worm gears (312).
9. A photovoltaic panel installation mechanism according to claim 8, characterized in that: A limit baffle is provided at the junction of the lower end of the sliding support column (305) and the movable pulley (306); a certain distance is left between the top surface of the I-shaped fixing frame (303) and the bottom of the cross fixing frame (203); the inner surface of the hollow support cylinder (304) is rough; the pulley support rod (106) consists of a support rod and a sliding ball, and the pulley support rod (106) is slidably connected to the inner side of the spherical guide rail (209) through the sliding ball; the load-bearing fixed plate (105) is provided with a semicircular slider, and the load-bearing fixed plate (105) is slidably connected to the inner side of the spherical guide rail (209) through the semicircular slider.