Rigid guide post of a crane and its trolley

Abstract

The utility model discloses a kind of rigid guide pillar of crane and its hoist trolley, it is related to crane technical field, the guide pillar includes N guide pillar body that are stacked together in turn, N=2, N guide pillar body is successively marked as first guide pillar, second guide pillar, …… the N guide pillar from outside to inside, the outside wall of X guide pillar is provided with mounting hole, mounting hole is rotatably connected with guiding component, the guiding component includes mounting piece that can be detachably fixedly connected on the mounting hole of X guide pillar and it is provided with aperture, aperture can detachably fixedly connected with guide shaft, guide shaft is rotatably connected with guide wheel. By detachably installing guide shaft on the outside wall of X guide pillar, to facilitate the replacement of guide shaft, so as to realize the replacement of guide wheel, reduce the workload of worker, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a rigid guide column and its lifting trolley for a crane. Background Technology

[0002] Cranes are core equipment in material handling, engineering construction, and other fields. The stability and safety of material handling during the lifting process largely depend on the connection structure between the lifting device and the trolley. The conventional connection structure is mainly a wire rope. However, wire ropes are easily affected by wind and other factors, causing the lifting device and the load to sway. Therefore, in order to improve the stability during the lifting process, guide columns are often installed between the trolley and the lifting device. The rigid structure of the guide columns provides stable support for the movement of the wire rope.

[0003] Currently, existing crane guide columns often have guide wheels installed on the outer or inner wall of the guide column to improve stability during operation. When the guide wheel is installed on the outer wall of the guide column, the guide wheel often cannot reach the inner wall of the outer guide column due to the size of the inner and outer guide columns. When it is installed on the inner wall of the guide column, the installation is often difficult due to limited installation space. Moreover, when the guide wheel fails, the repair and replacement are difficult, increasing the labor intensity of maintenance personnel. Utility Model Content

[0004] This utility model provides a rigid guide column for a crane and its lifting trolley to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a rigid guide column for a crane, which includes N guide column bodies stacked together in sequence, wherein N≥2, and the N guide column bodies are named as the first guide column, the second guide column, ... the Nth guide column from the outside to the inside. An installation hole is provided on the outer side wall of the Xth guide column, and a guide assembly for guiding the X+1th guide column is rotatably connected to the installation hole. The guide assembly includes a mounting member, which is detachably and fixedly connected to the installation hole of the Xth guide column. An opening is provided on the mounting member, and a horizontally arranged guide shaft is detachably and fixedly connected to the mounting member at the opening. A guide wheel is rotatably connected to the guide shaft, and the guide wheel is positioned to abut against the outer side wall of the X+1th guide column.

[0006] Preferably, the mounting component includes a mounting frame adapted to the mounting hole. The mounting frame is detachably and fixedly connected to the Xth guide post at the mounting hole. The mounting frame has a guide groove adapted to the guide shaft. The guide shaft is located in the guide groove and is detachably and fixedly connected to the guide shaft by a limiting component.

[0007] Preferably, a vertically arranged mounting plate is fitted onto the mounting frame, the mounting plate is fixedly connected to the mounting frame, and the mounting plate is detachably fixed to the outer wall of the Xth guide post by bolts.

[0008] Preferably, the limiting component includes a vertically arranged fixing plate, on which a limiting post adapted to the guide groove is fixedly connected. The end of the limiting post abuts against the guide shaft, and the fixing plate is detachably fixedly connected to the mounting plate by positioning bolts.

[0009] Preferably, the end of the guide groove away from the mounting plate is arc-shaped and adapted to the guide shaft. The guide shaft has a notch adapted to the limiting post on the side near the limiting post. The end face of the notch near the limiting post is flat, and the end of the limiting post abuts against the end face of the notch.

[0010] Preferably, the positioning bolt passes through the fixing plate and the mounting plate in sequence and is threadedly connected to the mounting frame, and a buffer rubber pad is provided on the positioning bolt between the positioning bolt and the fixing plate; and the cross-section of the Xth guide post is a polyhedron, and each side of the Xth guide post is provided with at least one mounting hole, and a guide component is installed at each mounting hole of the Xth guide post.

[0011] On the other hand, this utility model protects a lifting trolley, which includes a trolley frame. Two rigid guide columns, spaced apart as described above, are installed at the bottom of the trolley frame. The two first guide columns are fixedly connected to the bottom of the trolley frame. A horizontally arranged lifting device is fixedly connected to the bottom of the two second guide columns. A movable pulley block is fixedly connected to the top of the lifting device located outside the second guide columns. A fixed pulley is rotatably connected to the bottom of the trolley frame corresponding to the movable pulley block. A rope wedge is fixedly connected to the bottom of the trolley frame on one side of the fixed pulley. A drive motor is fixedly connected to the top of the trolley frame. A reduction motor is driven through the output shaft of the drive motor. Two drums are driven through the two output shafts of the reduction motor via couplings. Steel wire ropes are wound on the two drums. The ends of the steel wire ropes pass sequentially around the movable pulley block, the fixed pulley, and the movable pulley block before being fixedly connected to the rope wedge. The trolley frame is also equipped with a trolley traveling mechanism.

[0012] Preferably, the trolley traveling mechanism includes a traveling motor, which is fixedly connected to the edge of the trolley frame. The trolley frame has an opening adapted to the traveling motor. The output shaft of the traveling motor passes through the opening and is connected to a reduction mechanism. The two output shafts of the reduction mechanism are connected to driving wheels via couplings. The driving wheels are rotatably connected to a vertically arranged connecting frame, which is fixedly connected to the trolley frame. On the other side of the trolley frame, two spaced-apart driven wheels are rotatably connected via the connecting frame. The driven wheels correspond one-to-one with the driving wheels.

[0013] Preferably, two spaced-apart connecting plates are fixedly connected to the outer wall of the connecting frame, and both connecting plates are horizontally arranged. Vertically arranged connecting bolts are passed through the two connecting plates. Horizontal wheels are rotatably connected to the ends of the connecting bolts, and the connecting bolts are fixedly connected to the connecting plates by nuts. The central axes of the horizontal wheels and the traveling wheels are perpendicular to each other.

[0014] Preferably, at least two spaced connecting beams are fixedly connected to the bottom of the trolley frame. The connecting beams are arranged along the length of the trolley frame, and a reinforcing column is fixedly connected between the two connecting beams. The top of the first guide column is fixedly connected to the reinforcing column, and an inclined connecting column is fixedly connected to the upper part of the first guide column. The end of the connecting column is fixedly connected to the bottom of the connecting beam. Multiple reinforcing ribs are fixedly connected to the outer wall of the first guide column near the reinforcing column, and multiple reinforcing ribs are also fixedly connected to the outer wall of the connecting column near the connecting beam.

[0015] The beneficial effects of this utility model are as follows: (1) By opening an installation hole on the outer wall of the Xth guide post and detachably installing the guide shaft at the installation hole, it is convenient to install the guide wheel at the installation hole and to replace the guide shaft, thereby realizing the replacement of the guide wheel. This makes it convenient to replace the guide wheel in time when the guide wheel rubs after long-term use. Moreover, the operation of replacing the guide wheel is more convenient, reducing the workload of workers and improving work efficiency. (2) By setting the limiting post, it is convenient to fix the position of the guide shaft, thereby realizing the detachable fixed connection between the guide shaft and the mounting frame. At the same time, the setting of the fixing plate makes it convenient to install and disassemble the limiting post, improving the convenience of operation. (3) A flat notch is opened on the side of the guide shaft away from the arc-shaped guide groove. The end face of the limiting post is also flat. The limiting post abuts against the notch of the flat surface, thereby increasing the contact area between the limiting post and the guide shaft, further improving the constraint of the limiting post on the guide shaft, improving the stability of the guide shaft, and thus improving the stability of the guide post during the sliding process. (4) The rigid guide column is set at the bottom of the trolley frame so as to guide the lifting device through the rigid guide column and improve the stability of the lifting device during the lifting process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rigid guide post of this utility model; Figure 2 This is a schematic diagram showing the connection relationship between the Xth guide post and the mounting hole of this utility model; Figure 3 This diagram illustrates the connection between the mounting frame and the mounting plate of this utility model. Figure 1 ; Figure 4 This is a schematic diagram showing the connection relationship between the mounting frame, mounting plate, and fixing plate of this utility model; Figure 5This diagram illustrates the connection between the mounting frame and the mounting plate of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the mounting frame of this utility model; Figure 7 This diagram illustrates the connection between the mounting frame and the mounting plate of this utility model. Figure 3 ; Figure 8 This diagram illustrates the connection between the mounting frame and the mounting plate of this utility model. Figure 4 ; Figure 9 This is a schematic diagram showing the connection relationship between the guide wheel and the guide shaft of this utility model; Figure 10 This is a schematic diagram of the structure of the fixing plate of this utility model. Figure 1 ; Figure 11 This is a schematic diagram of the structure of the fixing plate of this utility model. Figure 2 ; Figure 12 This is a schematic diagram showing the connection between the trolley frame and the drum of this utility model; Figure 13 This is a schematic diagram showing the connection relationship between the trolley frame and the first guide post of this utility model; Figure 14 This is a schematic diagram of the structure of the lifting trolley of this utility model; Figure 15 This is a schematic diagram showing the connection relationship between the horizontal wheel and the connecting plate of this utility model.

[0017] Reference numerals: 1. First guide post; 2. Second guide post; 3. Xth guide post; 4. Mounting hole; 5. Mounting component; 6. Opening; 7. Guide shaft; 8. Guide wheel; 9. Mounting frame; 10. Guide groove; 11. Mounting plate; 12. Assembly hole; 13. Fixing plate; 14. Limiting post; 15. Notch; 16. Positioning bolt; 17. Buffer pad; 18. Mounting groove; 19. Clearance hole; 20. Lifting beam; 21. Clearance groove; 22. Trolley frame; 23. Moving pulley block; 24. Fixed pulley; 25. Rope wedge; 26. Drive motor; 27. Gear motor; 28. Drum; 29. ​​Travel motor; 30. Active travel wheel; 31. Connecting frame; 32. Connecting plate; 33. Horizontal wheel; 34. Connecting beam; 35. Reinforcing column; 36. Connecting column; 37. Electric suction cup. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] A rigid guide column for a crane comprises N guide column bodies stacked sequentially, where N ≥ 2. The N guide column bodies are sequentially designated as first guide column 1, second guide column 2, ..., Nth guide column from the outside in. First guide column 1 is located at the top. Second guide column 2 is located inside first guide column 1 and slides along its inner wall. Third guide column slidably connects to the inner wall of second guide column 2, and so on. Nth guide column slidably connects to the inner wall of the (N-1)th guide column, and Xth guide column 3 (where Xth guide column 3 refers to any one of the N guide columns, not...) A mounting hole 4 is provided on the outer wall of a specific guide post (X≥1). A guide assembly for guiding the X+1 guide post is rotatably connected to the mounting hole 4. The guide assembly includes a mounting member 5, which is detachably and fixedly connected to the mounting hole 4 of the X guide post 3. An opening 6 is provided on the mounting member 5. A horizontally arranged guide shaft 7 is detachably and fixedly connected to the mounting member 5 at the opening 6. A guide wheel 8 is rotatably connected to the guide shaft 7. The guide wheel 8 is located inside the opening 6 and abuts against the outer wall of the X+1 guide post. By creating mounting holes 4 on the outer wall of the Xth guide post 3 and installing a guide shaft 7 at these holes, the guide wheel 8 can be installed without requiring internal mounting space within the Xth guide post 3, thus improving operational convenience. The detachable and fixed connection of the guide shaft 7 also facilitates its replacement, enabling the replacement of the guide wheel 8. This allows for timely replacement of the guide wheel 8 when friction occurs after prolonged use, and the replacement operation is relatively convenient, reducing worker workload and improving work efficiency. The guide shaft 7 can be detachably and fixedly connected to the mounting component 5 using pins, bolts, or similar means.

[0020] In one embodiment, the mounting component 5 includes a mounting frame 9 adapted to the mounting hole 4. The opening 6 is located on the mounting frame 9, meaning the two ends of the mounting frame are openings 6. The mounting frame 9 is detachably and fixedly connected to the Xth guide post 3 at the mounting hole 4. The mounting frame 9 is detachably and fixedly connected to the mounting hole 4 by bolts or snap-fit, and the mounting frame 9 extends to the inner side of the Xth guide post 3 at the mounting hole 4, meaning the outer wall of the mounting frame 9 abuts against the side wall of the mounting hole 4. The guide wheel 8 extends to the outside of the mounting frame 9 and abuts against the outer wall of the X+1th guide post. The mounting frame 9 has a guide groove 10 adapted to the guide shaft 7. The guide shaft 7 is located within the guide groove 10, and the opening of the guide groove 10 is located close to the mounting hole 4 to facilitate the installation and removal of the guide shaft 7. The guide shaft 7 is detachably and fixedly connected within the guide shaft 7 by a limiting member. The limiting member can be a self-pin, bolt, etc. The guide groove 10 facilitates the installation and removal of the guide shaft 7.

[0021] In one embodiment, a vertically arranged mounting plate 11 is fitted onto the mounting frame 9. The mounting plate 11 is fixedly connected to the mounting frame 9, and the mounting plate 11 is detachably fixedly connected to the outer wall of the X guide post 3 by bolts. That is, the mounting frame 9 is detachably fixedly connected to the X guide post 3 by the mounting plate 11. The mounting plate 11 is located on the outer wall of the X guide post 3. Assembly holes 12 are opened at the four corners of the mounting plate 11, and threaded holes are also opened at corresponding positions on the outer wall of the X guide post 3. Bolts pass through the assembly holes 12 and are threaded into the threaded holes to realize the detachable fixed connection between the mounting plate 11 and the X guide post 3, thereby realizing the detachable fixed connection between the mounting frame 9 and the X guide post 3.

[0022] In one embodiment, the limiting member includes a vertically arranged fixing plate 13, on which a limiting post 14 adapted to the guide groove 10 is fixedly connected. The end of the limiting post 14 abuts against the guide shaft 7, and the fixing plate 13 is detachably fixedly connected to the mounting plate 11 by positioning bolts 16. The limiting post 14 is provided to fix the position of the guide shaft 7, thereby realizing a detachable fixed connection between the guide shaft 7 and the mounting frame 9. At the same time, the setting of the fixing plate 13 facilitates the installation and removal of the limiting post 14, improving the convenience of operation.

[0023] In one embodiment, the end of the guide groove 10 away from the mounting plate 11 is arc-shaped and adapted to the guide shaft 7. By setting the end of the guide groove 10 to an arc-shaped structure to adapt to the guide shaft 7, the contact area between the guide shaft 7 and the guide shaft 7 is increased, thereby improving the constraint force on the guide shaft 7 to a certain extent and ensuring the stability of the guide shaft 7. A notch 15 adapted to the limit post 14 is opened on the side of the guide shaft 7 near the limit post 14. The end face of the notch 15 near the limit post 14 is flat, and the end of the limit post 14 abuts against the end face of the notch 15. That is, a flat notch 15 is opened on the side of the guide shaft 7 away from the arc-shaped guide groove 10, and the end face of the limit post 14 is also flat. The limit post 14 abuts against the flat notch 15, thereby increasing the contact area between the limit post 14 and the guide shaft 7, further improving the constraint of the limit post 14 on the guide shaft 7, improving the stability of the guide shaft 7, and thus improving the stability of the guide post during the sliding process.

[0024] In one embodiment, the positioning bolt 16 passes sequentially through the fixing plate 13 and the mounting plate 11 and is threadedly connected to the mounting frame 9. This allows for further fixation of the fixing plate 13, mounting plate 11, and mounting frame 9, improving the stability of the guide wheel 8 during the guiding process. A buffer pad 17 is fitted onto the positioning bolt 16 between it and the fixing plate 13. During operation, the (X+1)th guide post abuts against the guide wheel 8 on the inner wall of the Xth guide post 3, causing the guide wheel 8 to experience some impact. The buffer pad 17 provides a buffering effect, further improving the stability and service life of the rigid guide post.

[0025] In one embodiment, the fixing plate 13 has a mounting groove 18 adapted to the buffer pad 17. One end of the buffer pad 17 near the fixing plate 13 is located in the mounting groove 18 to provide mounting space for the buffer pad 17. Simultaneously, the mounting plate 11 has a clearance hole 19 adapted to the guide wheel 8, and the inner sidewall of the fixing plate 13 has a clearance groove 21 adapted to the guide wheel 8. When the fixing plate 13 abuts against the mounting plate 11, the guide wheel 8 may pass through the mounting frame 9 and extend to the outside of the Xth guide post 3. The clearance hole 19 and clearance groove 21 provide mounting space for the guide wheel 8, thereby improving the adaptability of the guide post. Furthermore, the Xth guide post has a polyhedral cross-section, with at least one mounting hole on each side. Guide components are installed at the mounting holes of the Xth guide post. By setting up multiple guide components, it is easy to guide each side wall of the X+1th guide post, thereby improving the stability of the rigid guide post.

[0026] On the other hand, this utility model protects a lifting trolley, which includes a trolley frame 22. Two rigid guide columns, as described above, are installed at the bottom of the trolley frame 22 at intervals. In this embodiment, N=2. The two first guide columns 1 are fixedly connected to the bottom of the trolley frame 22. A horizontally arranged lifting device is fixedly connected to the bottom of the two second guide columns 2. A movable pulley group 23 is fixedly connected to the top of the lifting device located outside the second guide columns 2. Two pulley plates are rotatably connected inside the movable pulley group 23. A fixed pulley 24 is rotatably connected to the bottom of the trolley frame 22 corresponding to the movable pulley group 23. A rope wedge 25 is fixedly connected to the bottom of the trolley frame 22 on one side of the fixed pulley 24. The rope wedge 25 is prior art and will not be described in detail here. A drive motor 26 is fixedly connected to the top of the trolley frame 22. The output shaft of the drive motor 26 is driven by a reduction motor 27. The two output shafts of the reduction motor 27 are driven by a coupling to a drum 28. Wire ropes are wound on the two drums 28 respectively. The end of each wire rope passes sequentially over one pulley of the movable pulley block 23, the fixed pulley 24, and the other pulley of the movable pulley block 23 before being fixedly connected to a rope wedge 25. The trolley frame 22 is also equipped with a trolley traveling mechanism. In use, the drive motor 26 is driven, and the output shaft of the drive motor 26 drives the reduction motor 27 to rotate. The reduction motor 27 drives the drum 28 to rotate through the coupling, thereby realizing the winding and unwinding of the wire rope, and thus realizing the lifting and lowering of the lifting device. While the wire rope is being wound and unwound, the second guide post 2 slides along the guide wheel 8 on the inner side of the first guide post 1, thereby improving the stability of the lifting and lowering of the lifting device. In this embodiment, the lifting device includes a horizontally arranged lifting beam 20, which is parallel to the length direction of the trolley frame 22. A plurality of spaced electric suction cups 37 are fixedly connected to the bottom of the lifting beam 20. The electric suction cups 37 are also existing technology and will not be described in detail here.

[0027] In one embodiment, the trolley traveling mechanism includes a traveling motor 29, which is fixedly connected to the edge of the trolley frame 22. The trolley frame 22 has an opening adapted to the traveling motor 29. The output shaft of the traveling motor 29 passes through this opening and is connected to a reduction gear mechanism. Both output shafts of the reduction gear mechanism are connected to driving wheels 30 via couplings. The driving wheels 30 are rotatably connected to a vertically arranged connecting frame 31, which is fixedly connected to the bottom of the trolley frame 22. On the other side of the trolley frame 22, two spaced-apart driven wheels are rotatably connected to the connecting frame 31. The driven wheels correspond one-to-one with the driving wheels 30. In use, the traveling motor 29 is started, and its output shaft drives the reduction gear mechanism to rotate. The reduction gear mechanism, through a matching coupling, drives the driving wheels 30 to rotate. The driving wheels 30 roll along the crane's main beam, thus moving the trolley frame 22. Simultaneously, the driven wheels rotate and roll along the main beam.

[0028] In one embodiment, two spaced-apart connecting plates 32 are fixedly connected to the outer wall of the connecting frame 31. Both connecting plates 32 are horizontally arranged, and vertically arranged connecting bolts pass through the two connecting plates 32. Horizontal wheels 33 are rotatably connected to the ends of the connecting bolts, and the connecting bolts are fixedly connected to the connecting plates 32 by nuts. The horizontal wheels 33 are perpendicular to the central axis of the drive wheels 30. The horizontal wheels 33 are positioned to abut against the side wall of the rail on the crane main beam to guide the trolley frame 22, reduce the occurrence of derailment of the trolley frame 22, and improve the stability of the trolley operation.

[0029] In one embodiment, at least two spaced connecting beams 34 are fixedly connected to the bottom of the trolley frame 22. The connecting beams 34 are arranged along the length of the trolley frame 22, and a reinforcing column 35 is fixedly connected between the two connecting beams 34. The top of the first guide column 1 is fixedly connected to the reinforcing column 35, and an inclined connecting column 36 is fixedly connected to the upper part of the first guide column 1. The end of the connecting column 36 is fixedly connected to the bottom of the connecting beam 34. Multiple reinforcing ribs are fixedly connected to the outer wall of the first guide column 1 near the reinforcing column 35, and multiple reinforcing ribs are also fixedly connected to the outer wall of the connecting column 36 near the connecting beam 34. By setting the connecting beams 34 and reinforcing columns 35 at the bottom of the trolley frame 22, the rigidity of the trolley frame 22 is improved, thereby improving the stability and load-bearing capacity of the trolley frame 22. By setting the connecting column 36 and reinforcing ribs, the rigidity of the first guide column 1 is improved, thereby improving the stability of the first guide column 1, and improving the load-bearing capacity and service life of the lifting trolley.

[0030] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A rigid guide column for a crane, the guide column comprising N guide column bodies stacked sequentially together, characterized in that: in, N≥2, N guide pillars are sequentially named as first guide pillar, second guide pillar, ... Nth guide pillar from the outside to the inside, and the outer side wall of the Xth guide pillar has a mounting hole. A guide assembly for guiding the X+1th guide pillar is rotatably connected to the mounting hole. The guide assembly includes a mounting piece, which is detachably and fixedly connected to the mounting hole of the Xth guide pillar. The mounting piece has an opening, and a horizontally arranged guide shaft is detachably and fixedly connected to the mounting piece at the opening. A guide wheel is rotatably connected to the guide shaft, and the guide wheel is positioned to abut against the outer side wall of the X+1th guide pillar.

2. The rigid guide column of a crane according to claim 1, characterized in that: The mounting component includes a mounting frame that is adapted to the mounting hole. The mounting frame is detachably and fixedly connected to the Xth guide post at the mounting hole. The mounting frame has a guide groove adapted to the guide shaft. The guide shaft is located in the guide groove and is detachably and fixedly connected to the guide shaft by a limiting component.

3. A rigid guide column for a crane according to claim 2, characterized in that: A vertically mounted mounting plate is fitted onto the mounting frame. The mounting plate is fixedly connected to the mounting frame and is detachably fixed to the outer wall of the Xth guide post by bolts.

4. A rigid guide column for a crane according to claim 3, characterized in that: The limiting component includes a vertically arranged fixing plate, on which a limiting post adapted to the guide groove is fixedly connected. The end of the limiting post abuts against the guide shaft, and the fixing plate is detachably fixedly connected to the mounting plate by positioning bolts.

5. A rigid guide column for a crane according to claim 4, characterized in that: The guide groove is arc-shaped at the end away from the mounting plate and is adapted to the guide shaft. The guide shaft has a notch adapted to the limiting post on the side near the limiting post. The end face of the notch near the limiting post is flat, and the end of the limiting post abuts against the end face of the notch.

6. A rigid guide column for a crane according to claim 5, characterized in that: The positioning bolts pass through the fixing plate and the mounting plate in sequence and are threadedly connected to the mounting frame. A buffer rubber pad is fitted on the positioning bolt between the positioning bolt and the fixing plate. The cross-section of the Xth guide post is a polyhedron, and each side of the Xth guide post has at least one mounting hole. A guide component is installed at each mounting hole of the Xth guide post.

7. A crane trolley, characterized in that: The lifting trolley includes a trolley frame, with two spaced-apart rigid guide columns as described in any one of claims 1-6 mounted on the bottom of the trolley frame. The two first guide columns are fixedly connected to the bottom of the trolley frame, and a horizontally arranged lifting device is fixedly connected to the bottom of the two second guide columns. A movable pulley block is fixedly connected to the top of the lifting device located outside the second guide columns. A fixed pulley is rotatably connected to the bottom of the trolley frame corresponding to the movable pulley block. A rope wedge is fixedly connected to the bottom of the trolley frame on one side of the fixed pulley. A drive motor is fixedly connected to the top of the trolley frame. The output shaft of the drive motor is driven by a reduction motor. The two output shafts of the reduction motor are driven by drums through couplings. Steel wire ropes are wound on the two drums. The ends of the steel wire ropes pass through the movable pulley block, the fixed pulley, and the movable pulley block in sequence before being fixedly connected to the rope wedge. The trolley frame is also equipped with a trolley traveling mechanism.

8. A lifting trolley according to claim 7, characterized in that: The trolley traveling mechanism includes a traveling motor, which is fixedly connected to the edge of the trolley frame. The trolley frame has an opening adapted to the traveling motor. The output shaft of the traveling motor passes through the opening and is connected to a reduction mechanism. The two output shafts of the reduction mechanism are connected to driving wheels via couplings. The driving wheels are rotatably connected to a vertically set connecting frame, which is fixedly connected to the trolley frame. On the other side of the trolley frame, two spaced-apart driven wheels are rotatably connected via the connecting frame. The driven wheels correspond one-to-one with the driving wheels.

9. A lifting trolley according to claim 8, characterized in that: Two spaced-apart connecting plates are fixedly connected to the outer wall of the connecting frame. Both connecting plates are horizontally positioned. Vertical connecting bolts pass through the two connecting plates. Horizontal wheels are rotatably connected to the ends of the connecting bolts. The connecting bolts are fixedly connected to the connecting plates by nuts. The central axes of the horizontal wheels and the traveling wheels are perpendicular to each other.

10. A lifting trolley according to claim 9, characterized in that: At least two spaced connecting beams are fixedly connected to the bottom of the trolley frame. The connecting beams are arranged along the length of the trolley frame, and a reinforcing column is fixedly connected between the two connecting beams. The top of the first guide column is fixedly connected to the reinforcing column, and an inclined connecting column is fixedly connected to the upper part of the first guide column. The end of the connecting column is fixedly connected to the bottom of the connecting beam. Multiple reinforcing ribs are fixedly connected to the outer wall of the first guide column near the reinforcing column, and multiple reinforcing ribs are also fixedly connected to the outer wall of the connecting column near the connecting beam.

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