Photovoltaic power generation panel assembly of photovoltaic greenhouse

Abstract

The invention relates to the field of photovoltaic power generation, in particular to a photovoltaic power generation panel assembly of a photovoltaic greenhouse, which comprises a maintenance mechanism, a photovoltaic assembly, a bottom plate, a connecting frame positioned on the edge of the surface of the bottom plate, a mounting plate positioned on the connecting frame and a photovoltaic panel positioned on the mounting plate, the adjusting assembly comprises two fixing frames symmetrically fixed to the surface of the bottom plate, a shaft rod is arranged between the fixing frames, and a lifting part and a traction part are installed at the two ends of the shaft rod respectively. Through cooperative arrangement of the lifting part and the traction part, traction tension can be applied to the mounting plate from the two sides of the mounting plate, the tension on the two sides interacts, the mounting plate can be positioned, and adjustment of the use angle of the photovoltaic panel is achieved through winding and unwinding control over the lifting rope and the traction rope, that is, adjustment of the use angle of the photovoltaic panel is achieved through length adjustment and locking of the lifting rope and the traction rope. Therefore, the angle adjustment and fixation of the photovoltaic panel can be realized, and the effect of considering the angle adjustment of the photovoltaic panel and the stability of the photovoltaic panel is achieved.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic power generation, in particular to a photovoltaic power generation panel assembly of a photovoltaic greenhouse. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic power generation technology is widely used in life and production. In agricultural production, electricity for growing greenhouses can also be provided by photovoltaic panel power generation assemblies. Existing photovoltaic power generation assemblies mostly use cables as supporting load-bearing structures. When the angle of the photovoltaic panel is adjusted, the actual supporting length of the cable is not convenient to be adaptively adjusted due to the change in the angle of the photovoltaic panel, which changes the supporting relationship between the cable and the photovoltaic panel, thereby reducing the stability and wind resistance of the photovoltaic panel, affecting the normal use of the photovoltaic panel. For this reason, a photovoltaic panel assembly for a photovoltaic greenhouse is proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a photovoltaic panel assembly for a photovoltaic greenhouse to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: comprising: a photovoltaic assembly, comprising a base plate, a connecting frame located at the edge of the base plate surface, a mounting plate located on the connecting frame, and a photovoltaic panel located on the mounting plate; and

[0005] The adjustment component includes two fixing frames symmetrically fixed to the surface of the base plate, an axis rod is arranged between the two fixing frames, a lifting member and a traction member are respectively installed at both ends of the axis rod, locking rings are installed on the outer end surfaces of the lifting member and the traction member, a locking member is fixedly installed on the middle section of the surface of the axis rod, an unlocking member passes through the interior of the locking member, and a control member is arranged on the outside of the lifting member.

[0006] As a further description of the above technical solution: the mounting plate and the connecting frame are hingedly matched.

[0007] As a further description of the above technical solution: the lifting member includes a right winding disc installed at one end of the shaft rod, a lifting rope is arranged outside the right winding disc, an upper reversing ring is arranged outside the lifting rope, and a cross frame is connected to the top of the upper reversing ring;

[0008] The traction member comprises a left winding drum installed at the other end of the shaft rod, a traction rope is arranged on the outer side of the left winding drum, and a lower steering ring is arranged on the outer side of the traction rope;

[0009] The cross frame and the lower turning ring are both fixed on the surface of the bottom plate.

[0010] As a further description of the above technical solution: the locking member includes a mounting seat fixed on the shaft rod, a right clamping block and a left clamping block are respectively arranged on both sides of the interior of the mounting seat, a lever is arranged on the right clamping block, a top spring is arranged on the outer side of the right clamping block, and a control groove is reserved on the inner wall of the right clamping block;

[0011] The shifting rod is in contact with the left clamping block.

[0012] As a further description of the above technical solution: the inner edge of the locking ring is provided with a plurality of locking teeth in a ring array, and the locking ring and the right clamping block are in a snap-fitting fit.

[0013] As a further description of the above technical solution: the unlocking member comprises a moving rod penetrating the mounting seat, and a push block is arranged on the moving rod;

[0014] The moving rod is arranged in a bow shape, and the moving rod penetrates the shaft rod and extends to the outside of the shaft rod;

[0015] A moving groove matched with the moving rod is reserved on the surface of the shaft rod.

[0016] As a further description of the above technical solution: the control groove is arranged along the inner wall of the right clamping block in a spiral manner, and the control groove cooperates with the pushing block.

[0017] As a further description of the above technical solution: the control member includes a square sleeve that penetrates into the interior of the lifting member, one side of the square sleeve is connected to a rotating sleeve, and a connecting spring is provided between the rotating sleeve and the lifting member.

[0018] As a further description of the above technical solution: the outer end of the moving rod extends to the inner side of the rotating sleeve.

[0019] As a further description of the above technical solution: the end of the pull rope is also connected to a tensioning member, and the tensioning member is symmetrically arranged with respect to the mounting plate;

[0020] The tensioning member comprises a fixing seat fixed to the surface of the mounting plate, the internal thread of the fixing seat is matched with an adjusting sleeve, and a limiting joint is embedded in the interior of the adjusting sleeve;

[0021] The ends of the lifting rope and the traction rope are both fixed to the limiting joint.

[0022] In the above technical scheme, the photovoltaic panel assembly of a photovoltaic greenhouse provided by the present invention can apply traction tension to the mounting plate from both sides through the coordinated setting of the lifting member and the traction member. The tension on both sides interacts with each other, so that the mounting plate can be positioned, and the stability and wind resistance of the entire photovoltaic power generation assembly can be improved. The use angle of the photovoltaic panel can be adjusted by controlling the retraction and release of the lifting rope and the traction rope, thereby meeting the different usage requirements of users. At the same time, with the cooperation of the locking ring and the locking member, the lifting member and the traction member can be locked, so that the lifting rope and the traction rope are always in a tensioned state to ensure the stability of the mounting plate. That is, by adjusting and locking the length of the lifting rope and the traction rope, the angle of the photovoltaic panel can be adjusted and fixed, and the stability of the photovoltaic panel can be ensured, achieving the effect of taking into account the angle adjustment of the photovoltaic panel and its own stability and wind resistance. Through the setting of the tensioning member, the untensioned rope can be fine-tuned to ensure that the ropes on both sides of the mounting plate are in a fully tensioned state, thereby avoiding any rope slack from affecting the stability of the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a partial cross-sectional structure of an adjustment assembly provided in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the matching structure of the locking ring and the locking member provided in an embodiment of the present invention;

[0027] Figure 4 An exploded cross-sectional schematic diagram of a locking member and an unlocking member provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the connection structure between the control member and the lifting member provided in an embodiment of the present invention;

[0029] Figure 6 A schematic structural diagram of a tensioning member provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100, photovoltaic module; 101, bottom plate; 102, connecting frame; 103, mounting plate; 104, photovoltaic panel; 200, adjustment component; 201, fixing frame; 202, shaft; 202a, moving slot; 203, lifting member; 203a, right winding drum; 203b, lifting rope; 203c, upper reversing ring; 203d, horizontal frame; 204, traction member; 204a, left winding drum; 204b, traction rope; 204c, lower reversing ring; 205, Locking ring; 206, locking piece; 206a, mounting seat; 206b, right clamping block; 206c, left clamping block; 206d, lever; 206e, top spring; 206f, control slot; 207, unlocking piece; 207a, moving rod; 207b, push block; 208, control piece; 208a, square sleeve; 208b, rotating sleeve; 208c, connecting spring; 209, tensioning piece; 209a, fixing seat; 209b, adjusting sleeve; 209c, limit joint. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1 , an embodiment of the present invention provides a technical solution: including a photovoltaic component 100.

[0034] Specifically, the photovoltaic assembly 100 includes a base plate 101 for fixing the entire assembly, and a connecting frame 102 is fixedly installed on the surface edge of the base plate 101. At the same time, a mounting plate 103 is hingedly connected to the connecting frame 102, and a photovoltaic panel 104 for power generation is installed on the mounting plate 103.

[0035] Furthermore, through the hinged connection between the mounting plate 103 and the connecting frame 102, the user can adjust the working angle of the photovoltaic panel 104 according to his own needs with the help of the movable mounting plate 103 and referring to the light angle to optimize the power generation effect of the photovoltaic panel 104.

[0036] See also Figure 1-5 , an embodiment of the present invention provides a technical solution: including an adjustment component 200.

[0037] Specifically, the adjustment component 200 includes two fixing frames 201 symmetrically fixed on the surface of the base plate 101, and an axle rod 202 is coaxially fixed between the two fixing frames 201, and the axle rod 202 is hollow. A lifting member 203 and a traction member 204 are rotatably installed at both ends of the axle rod 202, and locking rings 205 are installed on the outer end surfaces of the lifting member 203 and the traction member 204. At the same time, a locking member 206 is fixedly installed on the middle section of the surface of the axle rod 202, and the locking member 206 cooperates with the locking ring 205, and an unlocking member 207 runs through the interior of the locking member 206, and a control member 208 is arranged on the outer side of the lifting member 203.

[0038] Furthermore, the lifting member 203 includes a right winding drum 203a rotatably mounted on one end of the shaft rod 202, the outside of the right winding drum 203a is connected with a lifting rope 203b, and the other end of the lifting rope 203b is connected to the upper surface of the mounting plate 103, and at the same time, an upper reversing ring 203c is sleeved on the outside of the middle section of the lifting rope 203b, and the top of the upper reversing ring 203c is connected with a cross frame 203d, and the cross frame 203d is fixed on the bottom plate 101.

[0039] The traction member 204 includes a left winding drum 204a rotatably mounted on the other end of the shaft rod 202, and a traction rope 204b is wound around the outer side of the left winding drum 204a, and the other end of the traction rope 204b is fixed to the lower surface of the mounting plate 103. At the same time, a lower steering ring is provided on the outer side of the middle section of the traction rope 204b, and the lower steering ring and the cross frame 203d are both fixed to the surface of the base plate 101.

[0040] The lifting rope 203b and the traction rope 204b are respectively passed through the upper steering ring and the lower steering ring, and the angles of the lifting rope 203b and the traction rope 204b can be changed through the upper steering ring and the lower steering ring, so that the lifting rope 203b and the traction rope 204b can be as perpendicular to the mounting plate 103 as possible, thereby ensuring that the mounting plate 103 can be stably subjected to the pulling force from the lifting rope 203b and the traction rope 204b.

[0041] The locking member 206 includes a mounting seat 206a with a hole fixed on the shaft 202, and a right clamping block 206b and a left clamping block 206c are rotatably provided on both sides of the interior of the mounting seat 206a, and a lever 206d is provided on the right clamping block 206b, and the lever 206d is in contact with the left clamping block 206c, so that when the right clamping block 206b rotates, the left clamping block 206c can be driven to rotate synchronously under the setting of the lever 206d, and at the same time, the outer sides of the right clamping block 206b and the left clamping block 206c are both provided with a top spring 206e, and the top spring 206e can elastically support the right clamping block 206b and the left clamping block 206c with its own elastic force to ensure that the right clamping block 206b and the left clamping block 206c are smoothly reset after deflection, and the inner walls of the right clamping block 206b and the left clamping block 206c are both provided with a control groove 206f.

[0042] The unlocking member 207 includes a moving rod 207a penetrating through the mounting seat 206a, and a pushing block 207b is disposed on the moving rod 207a.

[0043] Furthermore, a locking ring 205 is fixed on the end face of the lifting member 203 opposite to the traction member 204, and the inner edge of the locking ring 205 is provided with a plurality of locking teeth in a ring array. The locking ring 205 can be engaged with the right clamping block 206b or the left clamping block 206c, thereby realizing rotation locking of the right winding drum 203a or the left winding drum 204a, so as to maintain the tension of the pulling rope 203b or the traction rope 204b, and ensure the stability and wind resistance of the photovoltaic panel 104 during operation.

[0044] The control groove 206f is arranged in a spiral shape along the inner wall of the right clamping block 206b, and the control groove 206f cooperates with the push block 207b. When the push block 207b slides inside the control groove 206f, the push force of the push block 207b on the groove wall of the control groove 206f can cause the right clamping block 206b or the left clamping block 206c to rotate, so as to achieve the purpose of controlling the matching state between the clamping block and the locking ring 205. At the same time, the control grooves 206f on the right clamping block 206b and the left clamping block 206c are symmetrically arranged, and the two control grooves 206f are connected. Initially, the push block 207b is located at the connection of the two control grooves 206f, so that the push block 207b can cooperate with the two control grooves 206f respectively as the moving rod 207a moves back and forth, thereby realizing the separate control of the right clamping block 206b or the left clamping block 206c, meeting the user's independent control requirements for the lifting member 203 or the traction member 204.

[0045] A control member 208 is installed on the outside of the lifting member 203 and the traction member 204. The control member 208 includes a square sleeve 208a that penetrates the inside of the right winding disk 203a or the left winding disk 204a. A rotating sleeve 208b is fixedly connected to one side of the square sleeve 208a, and a connecting spring 208c is arranged between the rotating sleeve 208b and the lifting member 203. The square sleeve 208a can move relative to the winding disk along the axial direction, and the square sleeve 208a itself is arranged in a square shape so that it can move relative to the winding disk. The winding reels are kept rotationally locked, that is, the winding reels can be controlled to rotate synchronously by rotating the rotating sleeve 208b, and at the same time, the two ends of the connecting spring 208c are respectively fixed to the rotating sleeve 208b and the outer wall of the winding reel, so that the rotating sleeve 208b and the square sleeve 208a can be quickly reset after being pulled out through the elastic force of the connecting spring 208c itself. At the same time, the elastic force of the connecting spring 208c can limit the position of the rotating sleeve 208b to prevent the rotating sleeve 208b from moving by itself when not affected by external force.

[0046] Preferably, the moving rod 207a is arranged in a bow shape, the middle section of the moving rod 207a is located inside the two blocks, and the outer end of the moving rod 207a passes through the shaft rod 202 and extends to the outside of the shaft rod 202. At the same time, the end of the moving rod 207a overlaps the inner side of the rotating sleeve 208b, so that when the rotating sleeve 208b moves outward, the moving rod 207a can be driven to move synchronously, and through the setting of the inner opening of the rotating sleeve 208b, while the moving rod 207a can move horizontally synchronously with the rotating sleeve 208b, the rotation between the rotating sleeve 208b and the moving rod 207a is relative, and at the same time, a moving groove 202a matching the moving rod 207a is reserved on the surface of the shaft rod 202, and the moving rod 207a can slide in the moving groove 202a, and the displacement requirement of the moving rod 207a moving horizontally with the rotating sleeve 208b is met by setting the moving groove 202a.

[0047] When the angle of the photovoltaic panel 104 needs to be adjusted during use, the user can first pull out the rotating sleeve 208b on one side of the right winding disk 203a, and drive the moving rod 207a to move synchronously through the inner convex edge of the rotating sleeve 208b, so that the push block 207b on the moving rod 207a moves in the control groove 206f on the inner wall of the right clamping block 206b, so that the right clamping block 206b is deflected, and the locking ring 205 on the outer side of the right winding disk 203a is released. At the same time, the lever 206d outside the right clamping block 206b drives the left clamping block 206c to deflect synchronously, thereby releasing the locking state of the right winding disk 203a and the left winding disk 204a at the same time. The user can now rotate the rotating sleeve 208b to control the right winding disk 203a and retract the pulling rope 203b as needed to adjust the angle of the photovoltaic panel 104. At the same time, because the left winding disk 204a can also rotate freely, the traction rope 204b can cooperate with the photovoltaic panel 104. After the photovoltaic panel 104 is adjusted, the rotating sleeve 208b is reset, and the right clamping block 206b is reset synchronously through the cooperation between the push block 207b and the control slot 206f, so that the right winding disk 203a is re-locked to ensure that the pull rope 203b is in a tensioned state, and when the right clamping block 206b is reset, the left clamping block 206c can be reset synchronously under the push of the top spring 206e, and then the user can reset the left The rotating sleeve 208b on one side of the winding drum 204a is pulled out, so that the engagement between the left clamping block 206c and the locking ring 205 on the outside of the left winding drum 204a is released, so that the left winding drum 204a can be unlocked separately, and then the left winding drum 204a can be controlled to rotate to adjust the tension of the traction rope 204b, and the traction rope 204b is also tightened. In this way, the angle adjustment needs of the photovoltaic panel 104 can be met while ensuring the stability and wind resistance of the photovoltaic panel 104.

[0048] In summary, by the coordinated setting of the lifting member 203 and the traction member 204, traction tension can be applied to the mounting plate 103 from both sides, and the tension on both sides interact with each other, so that the mounting plate 103 can be positioned, thereby improving the stability and wind resistance of the entire photovoltaic power generation assembly, and by controlling the retraction and release of the lifting rope 203b and the traction rope 204b, the use angle of the photovoltaic panel 104 can be adjusted to meet the different usage requirements of users, and at the same time, with the cooperation of the locking ring 205 and the locking member 206, the lifting member 203 and the traction member 204 can be locked, so that the lifting rope 203b and the traction rope 204b are always in a tensioned state to ensure the stability of the mounting plate 103, thereby achieving the effect of taking into account the angle adjustment of the photovoltaic panel 104 and its own stability and wind resistance.

[0049] See also Figure 1-6 In yet another embodiment provided by the present invention, a tensioning member 209 is included.

[0050] Specifically, the tensioning member 209 is symmetrically arranged with respect to the mounting plate 103 , that is, the ends of the pulling rope 203 b and the traction rope 204 b are both connected with the tensioning member 209 .

[0051] Furthermore, the tensioning member 209 includes a fixing seat 209a fixed to the surface of the mounting plate 103, the internal thread of the fixing seat 209a is cooperated with an adjusting sleeve 209b, and a limit joint 209c is embedded in the adjusting sleeve 209b, and the limit joint 209c and the pulling rope 203b or the traction rope 204b are integrally arranged, so that the pulling rope 203b or the traction rope 204b can stably maintain the connection with the adjusting sleeve 209b, and the adjusting sleeve 209b is rotated by the thread cooperation between the adjusting sleeve 209b and the fixing seat 209a to change the relative distance between the top of the adjusting sleeve 209b and the mounting plate 103, thereby achieving fine adjustment of the tension of the pulling rope 203b or the traction rope 204b to ensure that the pulling rope 203b and the traction rope 204b are in a fully tightened state when in use, thereby maintaining the stability of the mounting plate 103.

[0052] When in use, before the tensioning member 209 is adjusted, the adjustment sleeve 209b is at the maximum distance between it and the mounting plate 103. After the lifting rope 203b and the traction rope 204b are retracted and released, and the lifting member 203 and the traction member 204 are locked with the locking member 206, the user can rotate the corresponding adjustment sleeve 209b according to the tensioning state of the lifting rope 203b or the traction rope 204b to move the adjustment sleeve 209b toward the mounting plate 103, thereby tightening the lifting rope 203b or the traction rope 204b to ensure the stable position of the mounting plate 103.

[0053] In summary, by setting the tensioning member 209, it can cooperate with the lifting member 203 and the traction member 204 to fine-tune the untensioned ropes to ensure that the ropes on both sides of the mounting plate 103 are in a fully tensioned state, thereby preventing any rope from loosening and affecting the stability of the mounting plate 103.

[0054] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic panel assembly for a photovoltaic greenhouse, characterized in that: include, A photovoltaic assembly (100) comprising a base plate (101), a connecting frame (102) located at the edge of the surface of the base plate (101), a mounting plate (103) located on the connecting frame (102), and a photovoltaic panel (104) located on the mounting plate (103); and, The adjustment component (200) comprises two fixing frames (201) symmetrically fixed on the surface of the base plate (101), an axle rod (202) is arranged between the two fixing frames (201), a lifting member (203) and a traction member (204) are respectively installed at both ends of the axle rod (202), locking rings (205) are installed on the outer end surfaces of the lifting member (203) and the traction member (204), a locking member (206) is fixedly installed in the middle section of the surface of the axle rod (202), an unlocking member (207) passes through the interior of the locking member (206), and a control member (208) is arranged on the outer side of the lifting member (203).

2. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 1, characterized in that: The mounting plate (103) and the connecting frame (102) are hingedly matched.

3. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 2, characterized in that: The lifting member (203) comprises a right winding disc (203a) installed at one end of the shaft (202), a lifting rope (203b) is arranged outside the right winding disc (203a), an upper reversing ring (203c) is arranged outside the lifting rope (203b), and a cross frame (203d) is connected to the top of the upper reversing ring (203c); The traction member (204) comprises a left winding disc (204a) mounted on the other end of the shaft (202), a traction rope (204b) is arranged on the outer side of the left winding disc (204a), and a lower steering ring is arranged on the outer side of the traction rope (204b); The cross frame (203d) and the lower turning ring are both fixed on the surface of the bottom plate (101).

4. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 3, characterized in that: The locking member (206) comprises a mounting seat (206a) fixed on the shaft (202), a right clamping block (206b) and a left clamping block (206c) are respectively arranged on both sides of the interior of the mounting seat (206a), a shifting rod (206d) is arranged on the right clamping block (206b), a top spring (206e) is arranged on the outer side of the right clamping block (206b), and a control groove (206f) is reserved on the inner wall of the right clamping block (206b); The shifting rod (206d) is in contact with the left clamping block (206c).

5. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 4, characterized in that: The inner edge of the locking ring (205) is provided with a plurality of locking teeth in an annular array, and the locking ring (205) and the right locking block (206b) are in a snap-fitting manner.

6. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 5, characterized in that: The unlocking member (207) comprises a moving rod (207a) penetrating the mounting seat (206a), and a pushing block (207b) is arranged on the moving rod (207a); The moving rod (207a) is arranged in a bow shape, and the moving rod (207a) passes through the shaft rod (202) and extends to the outside of the shaft rod (202); The surface of the shaft rod (202) is provided with a moving groove (202a) that matches the moving rod (207a).

7. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 6, characterized in that: The control groove (206f) is arranged along the inner wall of the right clamping block (206b) in a spirally inclined manner, and the control groove (206f) is matched with the pushing block (207b).

8. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 7, characterized in that: The control member (208) comprises a square sleeve (208a) penetrating into the interior of the lifting member (203), one side of the square sleeve (208a) is connected to a rotating sleeve (208b), and a connecting spring (208c) is provided between the rotating sleeve (208b) and the lifting member (203).

9. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 8, characterized in that: The outer end of the moving rod (207a) extends to the inner side of the rotating sleeve (208b).

10. The photovoltaic panel assembly of the photovoltaic greenhouse according to claim 9, characterized in that: The end of the pulling rope (203b) is also connected to a tensioning member (209), and the tensioning member (209) is symmetrically arranged with respect to the mounting plate (103); The tensioning member (209) comprises a fixing seat (209a) fixed to the surface of the mounting plate (103), the internal thread of the fixing seat (209a) is matched with an adjusting sleeve (209b), and a limiting joint (209c) is embedded inside the adjusting sleeve (209b); The ends of the pulling rope (203b) and the traction rope (204b) are both fixed to the limiting joint (209c).

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