Steel tie rod elevator

Abstract

The utility model relates to the technical field of lifting devices, in particular to a steel tie rod lifting machine, which improves the stability in use, is convenient to adjust the lifting height and position, is convenient to use and widens the application range. Comprising a bottom plate, a plurality of moving wheels, a lifting arm, supporting assemblies, an angle adjusting mechanism, a height adjusting mechanism and a lifting assembly, the moving wheels are installed at the four corners of the bottom of the bottom plate correspondingly, the supporting assemblies are installed at the left end and the right end of the bottom plate, the lifting arm is installed at the top of the bottom plate through the angle adjusting mechanism, and a fastening assembly is installed on the angle adjusting mechanism; a height adjusting mechanism is installed in the lifting arm, the lifting assembly is installed at the left end of the top of the bottom plate, and the output end of the lifting assembly is installed on the lifting arm.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a steel tie rod hoist. Background Art

[0002] A steel tie rod is an important structural element, mainly used to reinforce and enhance the stability of a structure. It prevents the structure from deforming or breaking when subjected to external forces by transmitting tensile forces, thereby protecting the integrity and safety of the overall structure. Steel tie rods are widely used, playing a key role not only in civil engineering such as buildings and bridges, but also in mechanical, vehicle and other industrial fields. When constructing steel tie rods, they need to be lifted to a specified height for installation, and a hoist is required. A lifting device disclosed in the prior art publication number CN217947294U includes a bracket vertically arranged on the ground and a transport platform. The transport platform can reciprocally slide along the length direction of the bracket, and an anti-falling component is arranged on the transport platform. The anti-falling component includes a ratchet rack and a locking bar. The ratchet rack is fixedly connected to the bracket and is arranged along the length direction of the bracket. A first spring is arranged on the locking bar, and both ends of the first spring are fixedly connected to the locking bar and the transport platform respectively. One end of the locking bar is rotatably connected to the transport platform, and the other end can be engaged with the ratchet rack. However, it can only lift vertically, and the lifting height is not easy to adjust, so its use is relatively limited. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a steel tie rod hoist that improves stability during use, is convenient for adjusting the lifting height and position, is easy to use, and has a wider application range.

[0004] A steel tie rod hoist of the utility model includes a bottom plate, a plurality of moving wheels, a lifting arm, a support assembly, an angle adjustment mechanism, a height adjustment mechanism, and a lifting assembly. Moving wheels are respectively installed at the four corners of the bottom of the bottom plate, support assemblies are installed at the left and right ends of the bottom plate, the lifting arm is installed on the top of the bottom plate through the angle adjustment mechanism, a fastening assembly is installed on the angle adjustment mechanism, a height adjustment mechanism is installed inside the lifting arm, the lifting assembly is installed at the left end of the top of the bottom plate, and the output end of the lifting assembly is installed on the lifting arm. It is moved to the use position through a plurality of moving wheels. During use, the bottom of the bottom plate is supported by the support assembly to increase the support area and improve the stability during use. The inclination angle of the lifting arm can be adjusted through the angle adjustment mechanism, and the lifting arm is fixed and limited by the fastening assembly to ensure stability during use and improve safety. At the same time, the height adjustment mechanism adjusts the lifting height, and the steel tie rod is connected to the lifting assembly to lift the steel tie rod, which is convenient to use and has a wider application range.

[0005] Preferably, the support assembly includes two double-output motors, two groups of threaded rods, two groups of support arms, two groups of fixed seats, two groups of hydraulic cylinders and two groups of support bases. Driving cavities are formed in the left and right ends of the bottom plate. Telescopic grooves are formed in the front and rear ends of the bottom plate with respect to the driving cavities. The double-output motors are fixed in the driving cavities. The front and rear output ends of the double-output motors are provided with threaded rods. The threaded rods are rotatably installed in the telescopic grooves. The support arms are slidably installed in the telescopic grooves, and the middle parts of the support arms are screwed on the outer walls of the threaded rods. The outer ends of the fixed seats are fixedly installed with fixed seats. The hydraulic cylinders are installed on the fixed seats. The bottoms of the hydraulic cylinders are movably installed with support bases. After moving to the use position, start the double-output motors to drive the threaded rods to rotate, and push the support arms to extend in the telescopic grooves, which can increase the support area at the bottom of the bottom plate. Start the hydraulic cylinders to drive the support bases to move downward to contact the ground and support the bottom of the bottom plate to ensure stability during use.

[0006] Preferably, the angle adjustment mechanism includes a support frame, two fixed plates, a threaded column, a pushing seat, a reduction motor, two guide rails and a pushing arm. The support frame is fixedly installed on the top of the bottom plate. A rectangular groove is formed in the top of the bottom plate corresponding to the support frame. The front and rear sides of the left end of the lifting arm are rotatably installed on the support frame through a rotating shaft. The two fixed plates are fixedly installed on the right end of the top of the bottom plate. The threaded column is rotatably installed between the two fixed plates. The right input end of the threaded column is connected to the output end of the reduction motor. The guide rails are symmetrically installed on the front and rear sides of the threaded column between the two fixed plates. The middle part of the pushing seat is screwed on the outer wall of the threaded column. The front and rear ends of the pushing seat are slidably installed on the guide rails. The top of the guide rail is rotatably installed with a pushing arm. The other end of the pushing arm is rotatably connected to the bottom of the lifting arm. Start the reduction motor to drive the threaded column to rotate. The threaded column pushes the pushing seat to move leftward. The pushing seat slides on the guide rail to support and guide it. The guide rail pushes the lifting arm to rotate on the support frame through the pushing arm, so as to adjust the use angle of the lifting arm, facilitate adjusting the lifting position, increase the use range and improve the practicability.

[0007] Preferably, the fastening assembly includes two turntables, two limit plates, two springs and two electric telescopic rods. The turntables are fixedly installed on the front and rear sides of the rotating shaft of the lifting arm. The limit plates are rotatably installed on the front and rear side walls of the support frame. Ratchet teeth are arranged on the outer edges of the turntables. Ratchet teeth matching the ratchet teeth are arranged on the upper parts of the left ends of the limit plates. The top ends of the springs are installed on the bottoms of the limit plates. The bottom ends of the springs are fixedly installed on the top ends of the bottom plate. The electric telescopic rods are installed on the top ends of the bottom plate at the right ends of the limit plates. The top telescopic ends of the electric telescopic rods are provided with pushing blocks. When the lifting arm rotates, it drives the turntable to rotate through the rotating shaft, and pushes the limit plate through the spring, so that the ratchet teeth cooperate with the ratchet teeth to limit and support the turntable to ensure stability during use. Start the electric telescopic rods to push the limit plates to rotate through the pushing blocks, so that the limit plates release the limit on the turntables.

[0008] Preferably, the height adjustment mechanism includes a transmission, a driving motor, a lifting stud, a telescopic arm, a sliding plate, two guide rods and two guide sliders. A height adjustment groove is formed inside the lifting arm. The transmission is fixedly installed on the left side wall of the lifting arm. The output end of the transmission is rotatably installed with the lifting stud. The lifting stud is rotatably installed in the height adjustment groove. The output end of the transmission is connected to the output end of the driving motor. The telescopic arm is slidably installed in the height adjustment groove, and the middle part of the telescopic arm is screwed on the outer wall of the lifting stud. The left end of the telescopic arm is fixedly installed with the sliding plate. Guide grooves are formed at the front and rear ends of the height adjustment groove. The guide rods are fixedly installed in the guide grooves. The guide sliders are fixedly installed at the front and rear ends of the sliding plate. The guide sliders are slidably installed on the outer walls of the guide rods. When the driving motor is started, the transmission drives the lifting stud to rotate. The lifting stud pushes the telescopic arm to move in the height adjustment groove, adjusting the protruding length of the telescopic arm at the right end of the lifting arm, and the lifting height can be adjusted. When the telescopic arm moves, it drives the guide sliders to move in the height adjustment groove. At the same time, the guide sliders slide on the guide rods, ensuring the stability of the telescopic arm during movement.

[0009] Preferably, the lifting assembly includes two winding rollers, a second transmission, a lifting motor, a support rod, a guide roller, a lifting frame, a lifting wheel and a wire guiding assembly. The front and rear ends of the winding roller are rotatably installed on the mounting plate. The mounting plate is fixed to the left end of the top of the bottom plate. The input end of the winding roller is connected to the output end of the second transmission. The input end of the second transmission is connected to the output end of the lifting motor. A support rod is fixedly installed at the right end of the mounting plate. A guide roller is rotatably installed between the two support rods. The lifting frame is installed at the right end of the telescopic arm. An electric telescopic rod is rotatably installed in the middle of the lifting frame. A lifting steel cable is arranged on the winding roller. A lifting hook is arranged at the end of the lifting steel cable after passing around the guide roller and the lifting wheel. When the lifting motor is started, the second transmission drives the winding roller to rotate, and the lifting hook is driven by the lifting steel cable to lift the steel pull rod, which is convenient for use.

[0010] Preferably, the wire guiding assembly includes a guiding frame, a first guide wheel and a second guiding frame. The guiding frame is fixedly installed at the left end of the top of the lifting arm. The first guide wheel is rotatably installed on the guiding frame. The second guiding frame is installed at the right end of the top of the lifting arm. A guide wheel is rotatably installed on the second guiding frame. The lifting steel cable passes around the first guide wheel and the guide wheel. When the lifting steel cable moves, the first guide wheel and the guide wheel are used to guide and convey the lifting steel cable, reducing friction and improving stability.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows: It is moved to the usage position through multiple moving wheels. During use, the bottom of the bottom plate is supported by the support assembly, increasing the support area and improving the stability during use. The inclination angle of the lifting arm can be adjusted through the angle adjustment mechanism, and the fastening assembly is used to fix and limit the lifting arm to ensure stability during use and improve safety. At the same time, the height adjustment mechanism adjusts the lifting height, and the steel tie rod is connected to the lifting assembly to lift the steel tie rod, which is convenient to use and expands the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is an isometric structural diagram of the present utility model;

[0014] Figure 3 is a partial sectional structural diagram of the present utility model;

[0015] Figure 4 is a left sectional structural diagram of the present utility model;

[0016] Figure 5 is a front sectional structural diagram of the present utility model;

[0017] Reference numerals in the drawings: 1, bottom plate; 2, moving wheel; 3, dual-output motor; 4, threaded rod; 5, support arm; 6, fixed seat; 7, hydraulic cylinder; 8, support base; 9, support frame; 10, lifting arm; 11, transmission; 12, drive motor; 13, lifting stud; 14, telescopic arm; 15, sliding plate; 16, guide rod; 17, guide slider; 18, fixing plate; 19, threaded column; 20, pushing seat; 21, reduction motor; 22, guide rail; 23, pushing arm; 24, turntable; 25, limiting plate; 26, spring; 27, electric telescopic rod; 28, winding roller; 29, second transmission; 30, lifting motor; 31, support rod; 32, guide roller; 33, guide frame; 34, first guide wheel; 35, second guide frame; 36, lifting frame; 37, lifting wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0019] Embodiment 1

[0020] As shown in Figure 1 , Figure 2 , Figure 4 andAs shown in Figure 5 , moving wheels 2 are respectively installed at the four corners of the bottom of the bottom plate 1. Driving cavities are provided inside the left and right ends of the bottom plate 1. Telescopic grooves are provided inside the bottom plate 1 at the front and rear ends with respect to the driving cavities. The double-output motor 3 is fixed in the driving cavity. The front and rear output ends of the double-output motor 3 are provided with threaded rods 4. The threaded rods 4 are rotatably installed in the telescopic grooves. The support arms 5 are slidably installed in the telescopic grooves, and the middle parts of the support arms 5 are screwed on the outer walls of the threaded rods 4. The outer ends of the fixed seats 6 are fixedly installed with fixed seats 6. The hydraulic cylinder 7 is installed on the fixed seat 6. The bottom of the hydraulic cylinder 7 is movably installed with a support base 8. The support frame 9 is fixedly installed on the top of the bottom plate 1. A rectangular groove is provided at the position corresponding to the support frame 9 on the top of the bottom plate 1. The front and rear sides of the left end of the lifting arm 10 are rotatably installed on the support frame 9 through rotating shafts. Two fixing plates are fixedly installed at the right end of the top of the bottom plate 1. The threaded column 19 is rotatably installed between the two fixing plates. The right input end of the threaded column 19 is connected to the output end of the reduction motor 21. Guide rails 22 are symmetrically installed on the front and rear sides of the threaded column 19 between the two fixing plates. The middle part of the pushing seat 20 is screwed on the outer wall of the threaded column 19. The front and rear ends of the pushing seat 20 are slidably installed on the guide rails 22. The top of the guide rail 22 is rotatably installed with a pushing arm 23. The other end of the pushing arm 23 is rotatably connected to the bottom of the lifting arm 10. A height adjustment groove is provided inside the lifting arm 10. The transmission 11 is fixedly installed on the left side wall of the lifting arm 10. The output end of the transmission 11 is rotatably installed with a lifting screw 13. The lifting screw 13 is rotatably installed in the height adjustment groove. The output end of the transmission 11 is connected to the output end of the driving motor 12. The telescopic arm 14 is slidably installed in the height adjustment groove, and the middle part of the telescopic arm 14 is screwed on the outer wall of the lifting screw 13. The left end of the telescopic arm 14 is fixedly installed with a sliding plate 15. Guide grooves are provided at the front and rear ends of the height adjustment groove. Guide rods 16 are fixedly installed in the guide grooves. Guide sliders 17 are fixedly installed at the front and rear ends of the sliding plate 15. The guide sliders 17 are slidably installed on the outer walls of the guide rods 16. The front and rear ends of the winding roller 28 are rotatably installed on the mounting plate. The mounting plate is fixed to the left end of the top of the bottom plate 1. The input end of the winding roller 28 is connected to the output end of the second transmission 29. The input end of the second transmission 29 is connected to the output end of the lifting motor 30. A support rod 31 is fixedly installed at the right end of the mounting plate. A guide roller 32 is rotatably installed between the two support rods 31. The lifting frame 36 is installed at the right end of the telescopic arm 14. An electric telescopic rod 27 is rotatably installed in the middle of the lifting frame 36. A lifting steel rope is provided on the winding roller 28. The end of the lifting steel rope bypasses the guide roller 32 and the lifting wheel 37 and is provided with a lifting hook;

[0021] ​It is moved to the use position through multiple moving wheels 2. After moving to the use position, the dual-output motor 3 is started to drive the threaded rod 4 to rotate, pushing the support arm 5 to extend in the telescopic groove, which can increase the support area at the bottom of the bottom plate 1. The hydraulic cylinder 7 is started to drive the support base 8 to move downward to contact the ground, supporting the bottom of the bottom plate 1 to ensure stability during use. The reduction motor 21 is started to drive the threaded column 19 to rotate, and the threaded column 19 pushes the pushing seat 20 to move leftward. The pushing seat 20 slides on the guide rail 22, providing support and guidance for it. The guide rail 22 pushes the lifting arm 10 to rotate on the support frame 9 through the push arm 23, thereby adjusting the use angle of the lifting arm 10, facilitating the adjustment of the lifting position, increasing the use range, and improving practicality. The driving motor 12 is started to drive the lifting screw column 13 to rotate through the transmission 11. The lifting screw column 13 pushes the telescopic arm 14 to move in the height adjustment groove, adjusting the extended length of the telescopic arm 14 at the right end of the lifting arm 10, enabling the adjustment of the lifting height. When the telescopic arm 14 moves, it drives the guide slider 17 to move in the height adjustment groove, and at the same time, the guide slider 17 slides on the guide rod 16 to ensure the stability of the telescopic arm 14 during movement. The lifting motor 30 is started to drive the winding roller 28 to rotate through the second transmission 29, and the lifting steel rope is used to drive the lifting hook to lift the steel pull rod, which is convenient for use.

[0022] Embodiment 2

[0023] As Figure 2 and Figure 5 shown, on the basis of Embodiment 1, it further includes a turntable 24 fixedly installed on the front and rear sides of the rotating shaft of the lifting arm 10, a limiting plate 25 rotatably installed on the front and rear end side walls of the support frame 9. The outer edge of the turntable 24 is provided with ratchet teeth, and the upper left end of the limiting plate 25 is provided with ratchet teeth matching the ratchet teeth. The top of the spring 26 is installed at the bottom of the limiting plate 25, and the bottom of the spring 26 is fixedly installed at the top of the bottom plate 1. The electric telescopic rod 27 is installed at the top of the bottom plate 1 at the right end of the limiting plate 25, and the top telescopic end of the electric telescopic rod 27 is provided with a pushing block. The guide frame 33 is fixedly installed at the upper left end of the top of the lifting arm 10, and the first guide wheel 34 is rotatably installed on the guide frame 33. The second guide frame 35 is installed at the upper right end of the top of the lifting arm 10, and a guide wheel is rotatably installed on the second guide frame 35;

[0024] When the lifting arm 10 rotates, it drives the turntable 24 to rotate through the rotating shaft, and the limiting plate 25 is pushed by the spring 26, so that the ratchet teeth cooperate with the ratchet teeth to limit and support the turntable 24, ensuring stability during use. The electric telescopic rod 27 is started to push the limiting plate 25 to rotate through the pushing block, so that the limiting plate 25 releases the limit on the turntable 24. The lifting steel rope bypasses the first guide wheel 34 and the guide wheel. When the lifting steel rope moves, the first guide wheel 34 and the guide wheel are used to guide and convey the lifting steel rope, reducing friction and improving stability.

[0025] AsFigures 1 to 5 As shown in the figure, for a steel tie rod hoist of the present utility model, during operation, the bottom plate 1 is moved to the use position through a plurality of moving wheels 2. After moving to the use position, the dual-output motor 3 is started to drive the threaded rod 4 to rotate, pushing the support arm 5 to extend in the telescopic groove, which can increase the support area at the bottom of the bottom plate 1. The hydraulic cylinder 7 is started to drive the support base 8 to move downward to contact the ground, supporting the bottom of the bottom plate 1. The reduction motor 21 is started to drive the threaded column 19 to rotate, and the threaded column 19 pushes the pushing seat 20 to move leftward. The pushing seat 20 slides on the guide rail 22 to support and guide it. The guide rail 22 pushes the lifting arm 10 to rotate on the support frame 9 through the push arm 23, thereby adjusting the use angle of the lifting arm 10 to facilitate adjusting the lifting position. When the lifting arm 10 rotates, it drives the turntable 24 to rotate through the rotating shaft, and the limiting plate 25 is pushed by the spring 26 to make the ratchet teeth cooperate with the ratchet teeth to limit and support the turntable 24. The electric telescopic rod 27 is started to push the limiting plate 25 to rotate through the pushing block, so that the limiting plate 25 releases the limit on the turntable 24. The driving motor 12 is started to drive the lifting screw column 13 to rotate through the transmission 11, and the lifting screw column 13 pushes the telescopic arm 14 to move in the height adjustment groove, adjusting the extending length of the telescopic arm 14 at the right end of the lifting arm 10 to adjust the lifting height. The lifting motor 30 is started to drive the winding roller 28 to rotate through the second transmission 29. The lifting steel rope bypasses the first guide wheel 34 and the guide wheel. When the lifting steel rope moves, the first guide wheel 34 and the guide wheel are used to guide and convey the lifting steel rope, and the lifting hook is driven by the lifting steel rope to lift the steel tie rod.

[0026] The dual-output motor 3, the reduction motor 21, the second transmission 29 and the lifting motor 30 of a steel tie rod hoist of the present utility model are purchased on the market. Those skilled in the industry only need to install and operate according to the attached operation manuals, without the need for creative labor from those skilled in the art.

[0027] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A steel tie rod hoist, characterized in that: The invention comprises a base plate (1), a plurality of movable wheels (2), a lifting arm (10), a supporting assembly, an angle adjustment mechanism, a height adjustment mechanism and a lifting assembly, wherein movable wheels (2) are respectively installed at the four corners of the bottom of the base plate (1), the left and right ends of the base plate (1) are installed with supporting assemblies, the lifting arm (10) is installed on the top of the base plate (1) through the angle adjustment mechanism, a fastening assembly is installed on the angle adjustment mechanism, a height adjustment mechanism is installed inside the lifting arm (10), the lifting assembly is installed at the top left end of the base plate (1), and the output end of the lifting assembly is installed on the lifting arm (10).

2. A steel tie rod hoist as claimed in claim 1, characterized in that: The support assembly comprises two dual-output motors (3), two groups of threaded rods (4), two groups of support arms (5), two groups of fixed seats (6), two groups of hydraulic cylinders (7) and two groups of support bases (8). The left and right ends of the bottom plate (1) are provided with drive chambers. The bottom plate (1) is provided with telescopic grooves at the front and rear ends of the drive chamber. The dual-output motor (3) is fixed in the drive chamber. The front and rear output ends of the dual-output motor (3) are provided with threaded rods (4). The threaded rods (4) are rotatably installed in the telescopic grooves. The support arms (5) are slidably installed in the telescopic grooves. The middle part of the support arms (5) is screwed on the outer wall of the threaded rods (4). The outer end of the fixed seat (6) is fixedly provided with the fixed seat (6). The hydraulic cylinder (7) is installed on the fixed seat (6). The bottom of the hydraulic cylinder (7) is movably provided with a support base (8).

3. A steel tie rod hoist as claimed in claim 1, characterized in that: The angle adjustment mechanism comprises a support frame (9), two fixed plates, a threaded column (19), a pushing seat (20), a reduction motor (21), two guide rails (22) and a pushing arm (23). The support frame (9) is fixedly mounted on the top of the base plate (1). A rectangular groove is provided at a position on the top of the base plate (1) corresponding to the support frame (9). The front and rear sides of the left end of the lifting arm (10) are rotatably mounted on the support frame (9) through a rotating shaft. The two fixed plates are fixedly mounted on the top right end of the base plate (1). The threaded column (19) is rotatably mounted on the top right end of the base plate (1). It is installed between two fixed plates, the right input end of the threaded column (19) is connected to the output end of the reduction motor (21), a guide rail (22) is installed between the two fixed plates symmetrically about the threaded column (19), the middle part of the push seat (20) is screwed on the outer wall of the threaded column (19), the front and rear ends of the push seat (20) are slidably installed on the guide rail (22), the top of the guide rail (22) is rotatably installed with a push arm (23), and the other end of the push arm (23) is rotatably connected to the bottom of the lifting arm (10).

4. A steel tie rod hoist as claimed in claim 3, characterized in that: The fastening assembly comprises two rotating disks (24), two limiting plates (25), two springs (26) and two electric telescopic rods (27). The rotating disk (24) is fixedly mounted on the front and rear sides of the rotating shaft of the lifting arm (10). The limiting plates (25) are rotatably mounted on the front and rear side walls of the supporting frame (9). The outer edge of the rotating disk (24) is provided with ratchet teeth. The upper left end of the limiting plates (25) is provided with ratchet teeth matching the ratchet teeth. The top of the spring (26) is mounted on the bottom of the limiting plates (25). The bottom of the spring (26) is fixedly mounted on the top of the bottom plate (1). The electric telescopic rod (27) is mounted on the top of the bottom plate (1) at the right end of the limiting plates (25). A pushing block is arranged at the top telescopic end of the electric telescopic rod (27).

5. A steel tie rod hoist as claimed in claim 1, characterized in that: The height adjustment mechanism comprises a transmission (11), a driving motor (12), a lifting stud (13), a telescopic arm (14), a sliding plate (15), two guide rods (16) and two guide slide blocks (17). A height adjustment groove is provided inside the lifting arm (10). The transmission (11) is fixedly mounted on the left side wall of the lifting arm (10). The output end of the transmission (11) is rotatably mounted with the lifting stud (13). The lifting stud (13) is rotatably mounted in the height adjustment groove. The output end of the transmission (11) is connected to the output end of the driving motor (12). The telescopic arm (14) is slidably mounted in the height adjustment groove. The middle part of the telescopic arm (14) is screwed on the outer wall of the lifting stud (13). The left end of the telescopic arm (14) is fixedly mounted with the sliding plate (15). Guide grooves are provided at the front and rear ends of the height adjustment groove. The guide rod (16) is fixedly mounted in the guide groove. The guide slide block (17) is fixedly mounted at the front and rear ends of the sliding plate (15). The guide slide block (17) is slidably mounted on the outer wall of the guide rod (16).

6. A steel tie rod hoist as claimed in claim 1, characterized in that: The lifting assembly comprises two winding rollers (28), a second transmission (29), a lifting motor (30), a support rod (31), a guide roller (32), a lifting frame (36), a lifting wheel (37) and a wire assembly. The front and rear ends of the winding roller (28) are rotatably mounted on a mounting plate. The mounting plate is fixed to the top left end of the bottom plate (1). The input end of the winding roller (28) is connected to the output end of the second transmission (29). The input end of the second transmission (29) is connected to the output end of the lifting motor (30). A support rod (31) is fixedly mounted on the right end of the mounting plate. A guide roller (32) is rotatably mounted between the two support rods (31). The lifting frame (36) is mounted on the right end of the telescopic arm (14). An electric telescopic rod (27) is rotatably mounted in the middle of the lifting frame (36). A lifting steel rope is arranged on the winding roller (28). A lifting hook is arranged at the end of the lifting steel rope passing around the guide roller (32) and the lifting wheel (37).

7. A steel tie rod hoist as claimed in claim 6, characterized in that: The wire assembly comprises a guide frame (33), a first guide wheel (34) and a second guide frame (35), wherein the guide frame (33) is fixedly mounted on the top left end of the lifting arm (10), the first guide wheel (34) is rotatably mounted on the guide frame (33), the second guide frame (35) is mounted on the top right end of the lifting arm (10), and the guide wheel is rotatably mounted on the second guide frame (35).

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