A semi-automatic frame for T-beam tensioning

Abstract

The present invention relates to the field of construction technology, and discloses a semi-automatic frame for tensioning a T-beam, comprising a main body, a first fixed column and a second fixed column being sequentially mounted on the top of the main body, a first slide being mounted on the top of the first fixed column, a latch being provided on one side of the first slide, a sliding member being mounted on the top of the first slide, a first bolt being sequentially mounted on one side of the sliding member, and a first nut being mounted on one end of each of the first bolts. The present invention automatically controls the movement and adjustment of the struts in the lateral direction through a motor device, thereby resolving the tedious work steps of disassembling components during strut adjustment and further improving work efficiency. The provided limiting column structure limits the position of the roller skates, thereby resolving the problem of the roller skates sliding arbitrarily during operation. The provided fixed seat structure enables the fixed column mechanism of the tensioning frame to be folded, thereby resolving the problem of the tensioning frame being difficult to carry due to the non-detachable fixed columns.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a semi-automatic frame for tensioning a T-beam. Background Art

[0002] The semi-automatic T-beam tensioning scaffold is an advanced device used in bridge construction. It utilizes advanced mechanical design and control technology to effectively improve the efficiency and quality of T-beam tensioning. Its semi-automatic operation, wide applicability, excellent stability, ease of operation, and safety and reliability make it a crucial tool for T-beam tensioning. In the bridge construction industry, the semi-automatic T-beam tensioning scaffold has significantly contributed to accelerating project schedules, improving quality, and reducing costs.

[0003] At present, the existing Chinese patent with publication number CN204898528 discloses a T-beam prestressed jack tensioning safety protection device. This utility model is used for the T-beam prestressed jack tensioning safety protection device in the tensioning construction of prefabricated beams in railway, highway, municipal construction and other projects. A platform with a pulley at the bottom is equipped with a bracket for the tensioning operation area, and a protective baffle is installed on the periphery of the bracket relative to the tensioning operation area. A jack suspension arm is installed on the top of the bracket, and a suspension pulley is installed on the jack suspension arm. There is an intelligent tensioning equipment parking area and a tool box placement area on the platform. This utility model has the following drawbacks: 1. The struts of the tensioning frame are fixed to their tops by fixings, which makes lateral movement and adjustment during operation extremely inconvenient. The fixings must be removed and the struts repositioned and installed, reducing work efficiency. 2. The roller skates are directly mounted on the struts via rollers, without a fixing structure, making them prone to slipping during use and causing work inconvenience. 3. The fixed column structure of the tensioning frame is fixed to the top of the base plate and cannot be disassembled, further increasing the size of the tensioning frame and making it extremely inconvenient to transport. A semi-automatic frame for T-beam tensioning is urgently needed to address the above technical issues. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a semi-automatic frame for tensioning T beams.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A semi-automatic frame for tensioning a T-beam comprises a main body, wherein a first fixing column and a second fixing column are sequentially installed on the top of the main body, a first slide is installed on the top of the first fixing column, a latch is provided on one side of the first slide, a slide is installed on the top of the first slide, a first bolt is sequentially installed on one side of the slide, a first nut is installed on one end of each of the first bolts, a slide hole is provided on the bottom of each of the slides, a second screw hole is provided on the bottom of each of the slides, a second bolt is installed inside each of the screw holes, a motor is installed on one side of the slide, a gear is installed on the bottom of the motor, first screw holes are sequentially provided on one side and the other side of the motor, a synchronous controller is installed on one side of the motor, and an electric wire is installed on the bottom of the synchronous controller. , a controller is installed at one end of the wire, a block groove is provided inside the slide, a support rod is installed inside the block groove, a fixed block is installed at one end and the other end of the support rod are both installed, a rotating member is installed on the top of the first fixed column, a first axis hole is provided on one side of the rotating member, a rotating column is installed on the top of the first fixed column, one end of the rotating column is installed with a first rotating shaft, the other end of the rotating column is provided with a rod hole, a second slide is installed at one end of the rotating column, a latch gear is provided on one side of the second slide, a slide is installed on the top of the second slide, a motor is installed on one side of the slide, a rod hole is provided inside the second slide, a connecting rod is installed inside the rod hole, and pillars are installed at one end and the other end of the connecting rod.

[0007] Preferably, a limiting tooth is provided at the bottom of the support rod, a roller skate is installed on one side of the support rod, a second rotating shaft and a positioning column are installed on one side and the other side of the roller skate, a limiting arm is installed on one side and the other side of the roller skate, a torsion spring is installed inside the limiting arm, a second axial hole is provided on one side of the limiting arm, a limiting column is installed at one end of the limiting arm, and a pull rope is installed at one end of the limiting column.

[0008] Preferably, a base plate is installed at the bottom of the main body, and a fixing seat is installed on the top of the base plate in turn, a third axial hole and a clamping hole are provided on one side of the fixing seat, a first fixing column and a second fixing column are installed on the top of the fixing seat, a third axial hole and a clamping hole are provided at the bottom of the first fixing column and the second fixing column, a third rotating shaft is installed inside the third axial hole, and a clamping column is installed inside the clamping hole.

[0009] Preferably, the first fixed column is fixedly connected to the second fixed column through the first slide, the slide and the first slide and the second slide are movably connected and fixed by a second bolt, the motor is fixedly connected to the slide through the second bolt, the motor and the gear are fixedly connected, the motor and the synchronous controller are electrically connected, the synchronous controller and the controller are electrically connected, the block groove is "U"-shaped and corresponding to the fixed block, the fixed block and the support rod are integrally arranged, the first fixed column and the rotating part are fixedly connected, the rotating part is movably connected to the rotating column through the first rotating shaft, the rotating column and the second slide are fixedly connected, the pillar and the connecting rod are fixedly connected, and the pillar is fixedly connected through the connecting rod and the second slide.

[0010] Preferably, the second rotating shaft, the position column and the roller are all fixedly connected, the limiting arm is movably connected through the second rotating shaft, the limiting arm and the position column are fixedly connected, and the limiting column and the pull rope are fixedly connected.

[0011] Preferably, the base plate and the fixing seat are fixedly connected, the fixing seat is set in a "T" shape, the fixing seat is movably connected to the first fixing column and the second fixing column through the third rotating shaft, and the third shaft hole and the clamping hole are set through.

[0012] Preferably, the limiting arm is hollowed out in the middle, and the limiting arm and the torsion spring are embedded and connected.

[0013] The beneficial effects of the present invention are:

[0014] The present invention automatically controls the struts to move and adjust in the lateral direction through the motor device, thereby solving the tedious work steps of disassembling components during the strut adjustment process and further improving work efficiency. The provided limit column structure limits the position of the roller skates, solving the problem of the roller skates sliding randomly during work. The provided fixed seat structure enables the fixed column mechanism of the tensioning frame to be folded, solving the problem of the tensioning frame being difficult to carry due to the non-detachable fixed column. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the sliding structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the rotating column of the present invention;

[0018] Figure 4 It is a schematic diagram of the pillar structure of the present invention;

[0019] Figure 5 is a schematic diagram of the second slide structure of the present invention;

[0020] Figure 6 It is a schematic structural diagram of the fixing seat of the present invention;

[0021] Figure 7 It is a schematic diagram of the roller skate structure of the present invention;

[0022] Figure 8 2 is a schematic diagram of the limit arm structure of the present invention;

[0023] In the figure: 1, main body; 2, first fixing column; 3, second fixing column; 4, first slide; 5, latch; 6, slide; 7, first bolt; 8, first nut; 9, slide hole; 10, second screw hole; 11, second bolt; 12, motor; 13, gear; 14, first screw hole; 15, synchronous controller; 16, wire; 17, controller; 18, block slot; 19, support rod; 20, fixed block; 21, rotating member; 22, first Axis hole; 23, rotating column; 24, first rotating shaft; 25, rod hole; 26, second slideway; 27, connecting rod; 28, pillar; 29, limiting tooth; 30, roller skate; 31, second rotating shaft; 32, position column; 33, limiting arm; 34, second axis hole; 35, torsion spring; 36, limiting column; 37, pull rope; 38, bottom plate; 39, fixing seat; 40, third axis hole; 41, clamping hole; 42, third rotating shaft; 43, clamping column. Implementation Method

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In one embodiment, referring to Figures 1 to 8, a T-beam tensioning semi-automatic frame, including a main body 1, a first fixing column 2 and a second fixing column 3 are sequentially installed on the top of the main body 1, a first slide 4 is installed on the top of the first fixing column 2, a latch 5 is provided on one side of the first slide 4, a slide 6 is installed on the top of the first slide 4, a first bolt 7 is sequentially installed on one side of the slide 6, a first nut 8 is installed on one end of the first bolt 7, a slide hole 9 is provided at the bottom of the slide 6, a second screw hole 10 is provided at the bottom of the slide 6, a second bolt 11 is installed inside the screw hole, a motor 12 is installed on one side of the slide 6, a gear 13 is installed at the bottom of the motor 12, first screw holes 14 are sequentially provided on one side and the other side of the motor 12, a synchronous controller 15 is installed on one side of the motor 12, an electric wire 16 is installed on the bottom of the synchronous controller 15, a controller 17 is installed on one end of the electric wire 16, a block groove 18 is provided inside the slide 6, a support rod 19 is installed inside the block groove 18, one end of the support rod 19 and the other end The ends are both provided with a fixed block 20, a rotating member 21 is installed on the top of the first fixed column 2, a first shaft hole 22 is provided on one side of the rotating member 21, a rotating column 23 is installed on the top of the first fixed column 2, one end of the rotating column 23 is provided with a first rotating shaft 24, and the other end of the rotating column 23 is provided with a rod hole 25, one end of the rotating column 23 is provided with a second slide 26, one side of the second slide 26 is provided with a latching tooth 5, a slide 6 is installed on the top of the second slide 26, and a motor 12 is installed on one side of the slide 6, a rod hole 25 is provided inside the second slide 26, a connecting rod 27 is installed inside the rod hole 25, and a support 28 is installed at one end and the other end of the connecting rod 27. After the controller 17 synchronizes the controller 15 to issue an instruction, the synchronous controller 15 controls the motor 12 to slide along the first slide 4 and the second slide 26 through the gear 13, and further the motor 12 drives the support rod 19 to perform synchronous sliding movement through the slide 6, so as to achieve the purpose of lateral movement adjustment of the support rod 19.

[0026] A limiting tooth 29 is provided at the bottom of the support rod 19, a roller skate 30 is installed on one side of the support rod 19, a second rotating shaft 31 and a positioning column 32 are installed on one side and the other side of the roller skate 30, a limiting arm 33 is installed on one side and the other side of the roller skate 30, a torsion spring 35 is installed inside the limiting arm 33, a second shaft hole 34 is provided on one side of the limiting arm 33, a limiting column 36 is installed at one end of the limiting arm 33, and a pull rope 37 is installed at one end of the limiting column 36.

[0027] A base plate 38 is installed at the bottom of the main body 1, and a fixing seat 39 is installed on the top of the base plate 38 in turn. A third axial hole 40 and a clamping hole 41 are provided on one side of the fixing seat 39. A first fixing column 2 and a second fixing column 3 are installed on the top of the fixing seat 39. The bottoms of the first fixing column 2 and the second fixing column 3 are provided with a third axial hole 40 and a clamping hole 41. The inside of the third axial hole 40 is installed with a third rotating shaft 42, and the inside of the clamping hole 41 is installed with a clamping column 43. The fixing seat 39 is a force-bearing component of the tensioning frame. The first fixing column 2 and the second-second fixing column 3 rotate through the fixing seat 39 to realize the folding of the fixed column structure, thereby achieving the effect of changing the volume of the tensioning frame.

[0028] The first fixed column 2 is fixedly connected to the second fixed column 3 through the first slide 4, the slide 6 and the first slide 4 and the second slide 26 are all movably connected and fixed by the second bolt 11, the motor 12 is fixedly connected to the slide 6 through the second bolt 11, the motor 12 and the gear 13 are fixedly connected, the motor 12 and the synchronous controller 15 are electrically connected, the synchronous controller 15 and the controller 17 are electrically connected, the block groove 18 is "U"-shaped and corresponds to the fixed block 20, the fixed block 20 and the support rod 19 are integrally arranged, the first fixed column 2 and the rotating member 21 are fixedly connected, the rotating member 21 is movably connected to the rotating column 23 through the first rotating shaft 24, and the rotating column 23 and the second The slide 26 is fixedly connected, the pillar 28 and the connecting rod 27 are both fixedly connected, and the pillar 28 is fixedly connected to the second slide 26 through the connecting rod 27. The first fixed group, the second fixed column 3, the first slide 4, the second slide 26, the rotating column 23, the pillar 28 and the second slide 26 constitute the fixed structure and sliding structure of the support rod 19. When the first fixed column 2 and the second fixed column 3 are in an upright state, the rotating column 23 is rotated to a vertical state with the first fixed column 2 through the rotating member 21. After the pillar 28 is rotated to a vertical state with the rotating column 23 through the connecting rod 27, the support rod 19 is installed through the slide 6. The fixed blocks 20 set at one end and the other end of the support rod 19 form a fixing effect through the block groove 18.

[0029] The second rotating shaft 31, the position column 32 and the roller skate 30 are all fixedly connected, the limiting arm 33 is movably connected through the second rotating shaft 31, the limiting arm 33 and the limiting column 36 are fixedly connected, and the limiting column 36 and the pull rope 37 are fixedly connected. When the limiting column 36 is pushed to the inside of the limiting tooth 29 provided at the bottom of the support rod 19 under the elastic force of the torsion spring 35 to form a fixing effect on the roller skate 30, the limiting column 36 is pulled downward by the pull rope 37 to release the fixing state of the roller skate 30 by the limiting column 36, and the position of the roller skate 30 can be further adjusted.

[0030] The base plate 38 and the fixing seat 39 are fixedly connected, the fixing seat 39 is set in a "T" shape, and the fixing seat 39 is movably connected to the first fixing column 2 and the second fixing column 3 through the third rotating shaft 42. The third axial hole 40 and the clamping hole 41 are through-set. When the first fixing column 2 and the second fixing column 3 are rotated in the expanded state through the third rotating shaft 42, the bottom column is fixed by installing the clamping column 43 into the inside of the clamping hole 41, thereby ensuring the structural stability of the bottom column during operation.

[0031] The limiting arm 33 is hollowed out in the middle, and the limiting arm 33 and the torsion spring 35 are embedded in each other. The limiting arm 3323 maintains an upward elastic effect through the torsion spring 3524 installed inside it, thereby automatically fixing the position of the roller skate 3020.

[0032] Specifically, the first fixed column 2 and the second fixed column 3 are the main force-bearing components of the tension frame and are used to install the first slide 4. The first slide 4 is used to connect the first fixed column 2 and the second fixed column 3 and form a sliding structure of the slide 6. The first slide 4 is used to install the slide 6. The slide 6 is used to install the support rod 19 and the motor 12, and is a structure for the support rod 19 and the motor 12 to slide laterally. The motor 12 is used to generate power for lateral movement, and further moves laterally along the first slide 4 and the second slide 26 through the slide 6. The latch 5 is used to produce a transmission effect with the gear 13. The synchronous controller 15 is used to control the motor 12 at one end of the support rod 19 and the other end to rotate synchronously. The controller 17 is used to send instructions to the synchronous controller 15. The block slot 18 is used to install and fix The support rod 19 and the rotating member 21 are used to install the rotating column 23 and are the rotating structure of the rotating column 23. The rotating column 23 is used to install the second slide 26. The connecting rod 27 is used to connect the pillar 28 so that the pillar 28 can rotate synchronously. The pillar 28, the connecting rod 27 and the rotating column 23 constitute the fixed structure of the second slide 26. The limiting tooth 29 is used to form a snap-fit ​​effect with the limiting column 36, further forming a fixing effect on the roller skate 30. The second shaft column is used to install the limiting arm 33 and is the rotating component of the limiting arm 33. The position column 32 is a fixed component of the torsion spring 35. The limiting arm 33 is used to install the torsion spring 35 and the limiting column 36. The torsion spring 35 is used to keep the limiting column 36 with an upward elastic force through the rotating arm, pushing the limiting column 36 to the limiting tooth 2 9, the pull rope 37 is used to pull the limit column 36 offline, so that the limit column 36 releases the fixed state of the roller skate 30. The fixing seat 39 is the basic component for the rotation of the bottom rod, and is used to install and fix the first fixing column 2 and the second fixing column 3. The third axis hole 40 is used to install the first rotating shaft 24, and the clamping hole 41 is used to install the clamping column 43. The clamping column 43 plays a structural fixing role for the first fixing column 2 and the second fixing column 3 in the expanded state. Working principle: the fixing seat 39 is fixedly installed on the top of the bottom plate 38, and plays the role of installing and fixing the bottom column. The bottom column rotates through the first rotating shaft 24 and the fixing seat 39 to form a folding effect. When the bottom column is in the expanded state, the clamping column 43 is installed to the inside of the clamping control to form a fixing effect on the bottom column, and the top column rotates around the bottom column through the hinge. The cam 36 is then moved to the left of the cam 36 and the cam 36 is moved to the right of the cam 36. The cam 36 is then moved to the right of the cam 36 and the cam 36 is moved to the right of the cam 36. The cam 36 is then moved to the right of the cam 36 and the cam 36 is moved to the right of the cam 36.The rotating column 23 is placed in a vertical state with respect to the first fixed column 2, and then the support 28 is rotated. The support 28 is rotated in the rod hole 25 provided in the second slide 26 through the connecting rod 27 to be vertical to the rotating column 23, so that the support 28 supports the second slide 26. Then, an instruction is sent to the synchronous controller 15 through the controller 17. The synchronous controller 15 controls the operation of the motor 12. The motor 12 drives the slide 6, and the slide 6 drives the support rod 19 to slide horizontally along the first slide 4 and the second slide 26 to achieve horizontal adjustment of the support rod 19. When sliding the pulley, the pull rope 37 is pulled downward, and the pull rope 37 drives the limit column 36, and further drives the limit arm 33 to rotate around the third rotating shaft 42, so that the limit column 36 is released from the bite of the limit tooth 29. The first and second fixing columns 2 and 3 are fixed in the fixed state, and then the pulley is moved to the appropriate position. The pull rope 37 is released, and the torsion spring 35 installed inside the limiting arm 33 forms an upward elastic force on the limiting arm 33 through the third rotating shaft 42, further pushing the limiting column 36 into the limiting tooth 29 to form an occlusal fixed state, thereby fixing the position of the roller skate 30. The first fixing column 2 and the second fixing column 3 are rotated around the fixing seat 39 to realize the expansion and folding of the first and second fixing columns 2 and 3. When the first and second fixing columns 2 and 3 are in the expanded state, the clamping column 43 is installed through the column hole to achieve the structural fixation of the first and second fixing columns 2 and 3. The clamping column 43 is removed, and the first and second fixing columns 2 and 3 are rotated to the folded state before transportation.

[0033] When the user uses the tensioning frame, he only needs to send instructions through the controller 17, and the support rod 19 will automatically adjust the lateral position under the action of the motor 12. When the roller skate 30 slides along the support rod 19, the pull rope 37 is pulled downward to make the limit column 36 fix the roller skate 30 in a contact state. When it moves to a suitable position, the pull rope 37 is released, and the limit column 36 automatically fixes the roller skate 30 under the action of the torsion spring 35. The first fixing column 2 and the second fixing column 3 are folded and unfolded by rotating around the fixing seat 39. When the bottom column is in the unfolded state, the clamping column 43 is installed correspondingly to the inside of the clamping hole 41 to fix the bottom column.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A semi-automatic frame for tensioning a T-beam, comprising a main body (1), characterized in that: The top of the main body (1) is sequentially mounted with a first fixing column (2) and a second fixing column (3), the top of the first fixing column (2) is mounted with a first slideway (4), one side of the first slideway (4) is provided with a latching tooth (5), the top of the first slideway (4) is mounted with a slide member (6), one side of the slide member (6) is sequentially mounted with a first bolt (7), one end of each of the first bolts (7) is mounted with a first nut (8), the bottom of each of the slide members (6) is provided with a slideway hole (9), the bottom of each of the slide members (6) is provided with a second screw hole (10), the inside of each of the screw holes is mounted with a second bolt (11), one side of the slide member (6) is mounted with a motor (12), the bottom of each of the motors (12) is mounted with a gear (13), and the bottom of each of the motors (12) is mounted with a gear (13). ), one side and the other side of the motor (12) are sequentially provided with first screw holes (14), one side of the motor (12) is installed with a synchronous controller (15), the bottom of the synchronous controller (15) is installed with a wire (16), one end of the wire (16) is installed with a controller (17), the interior of the slide (6) is provided with a block groove (18), the interior of the block groove (18) is installed with a support rod (19), one end and the other end of the support rod (19) are both provided with a fixed block (20), the top of the first fixed column (2) is installed with a rotating component (21), one side of the rotating component (21) is provided with a first shaft hole (22), the top of the first fixed column (2) is installed with a rotating column (23), the rotating column ( A first rotating shaft (24) is installed at one end of the rotating column (23), a rod hole (25) is provided at the other end of the rotating column (23), a second slideway (26) is installed at one end of the rotating column (23), a latching tooth (5) is provided on one side of the second slideway (26), a sliding member (6) is installed on the top of the second slideway (26), a motor (12) is installed on one side of the sliding member (6), a rod hole (25) is provided inside the second slideway (26), a connecting rod (27) is installed inside the rod hole (25), a support (28) is installed at one end and the other end of the connecting rod (27), a limiting tooth (29) is provided at the bottom of the support rod (19), a roller skate (30) is installed on one side of the support rod (19), and the roller skate (30) is installed on the roller skate (30). 0) is installed with a second rotating shaft (31) and a position column (32) on one side and the other side, a limiting arm (33) is installed on one side and the other side of the roller skate (30), a torsion spring (35) is installed inside the limiting arm (33), a second shaft hole (34) is provided on one side of the limiting arm (33), a limiting column (36) is installed at one end of the limiting arm (33), a pull rope (37) is installed at one end of the limiting column (36), the second rotating shaft (31), the position column (32) and the roller skate (30) are all fixedly connected, the limiting arm (33) is movably connected through the second rotating shaft (31), the limiting arm (33) and the limiting column (36) are fixedly connected, and the limiting column (36) and the pull rope (37) are fixedly connected.The limiting arm (33) is hollowed out in the middle, and the limiting arm (33) and the torsion spring (35) are embedded in connection. The bottom of the main body (1) is installed with a bottom plate (38), and the top of the bottom plate (38) is installed with a fixing seat (39) in turn. A third shaft hole (40) and a clamping hole (41) are provided on one side of the fixing seat (39). A first fixing column (2) and a second fixing column (3) are installed on the top of the fixing seat (39), and a third fixing column (40) and a clamping hole (41) are provided on the bottom of the first fixing column (2) and the second fixing column (3). The third shaft hole (40) and the clamping hole (41) are each provided with a third rotating shaft (42) inside the third shaft hole (40), and the clamping column (43) is each provided with a clamping column (43) inside the clamping hole (41). The bottom plate (38) and the fixing seat (39) are fixedly connected. The fixing seat (39) is in a "T" arrangement. The fixing seat (39) is movably connected to the first fixing column (2) and the second fixing column (3) through the third rotating shaft (42). The third shaft hole (40) and the clamping hole (41) are through-arranged. The first fixing column (2) is connected to the fixing seat (39) through the third rotating shaft (42). A slideway (4) and a second fixed column (3) are fixedly connected, the slide (6) and the first slideway (4) and the second slideway (26) are all movably connected and fixed by a second bolt (11), the motor (12) and the slide (6) are all fixedly connected by the second bolt (11), the motor (12) and the gear (13) are both fixedly connected, the motor (12) and the synchronous controller (15) are both electrically connected, the synchronous controller (15) and the controller (17) are electrically connected, and the block slot (18) is " The U-shaped arrangement corresponds to the fixed block (20), the fixed block (20) and the support rod (19) are integrally arranged, the first fixed column (2) and the rotating member (21) are fixedly connected, the rotating member (21) is movably connected to the rotating column (23) via the first rotating shaft (24), the rotating column (23) and the second slideway (26) are fixedly connected, the support column (28) and the connecting rod (27) are both fixedly connected, and the support column (28) is fixedly connected to the second slideway (26) via the connecting rod (27).

Images