Hoisting device with positioning guide
By installing guide sleeves and limit plates in the hoisting device, the problem of stable connection between the hook and the mechanical jaws was solved, achieving stability and precision in the hoisting process of the steel reinforcement cage and ensuring construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 5
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
The existing hoisting equipment cannot accurately position the mechanical jaws, which may cause the hook to move relative to the mechanical jaws, making it impossible to guarantee the stable hoisting of the hook, especially affecting the construction quality during the hoisting of steel reinforcement cages.
A lifting device with positioning guidance was designed. By setting a guide sleeve on the steel reinforcement frame and setting a limiting plate and a limiting part between the hook and the mechanical jaw, including a first limiting part that cooperates with the mechanical jaw for limiting and a second limiting part that cooperates with the guide sleeve for guiding, the stable connection between the hook and the mechanical jaw and the vertical drop of the mechanical jaw are ensured.
This achieves a stable connection between the hook and the mechanical jaws, ensuring the stable vertical descent of the mechanical jaws and the secure connection of the steel reinforcement frame, thus guaranteeing the safety and accuracy of the hoisting process.
Smart Images
Figure CN224377427U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting and positioning technology, specifically to a hoisting device with positioning guidance. Background Technology
[0002] In the original construction process, it is difficult to control the swing amplitude of the steel reinforcement cage during the positioning and lowering of the steel reinforcement cage by mechanical hoisting, especially the hoisting of the steel reinforcement cage. If not properly controlled, it will seriously affect the construction quality of the cast-in-place pile.
[0003] Currently, most steel reinforcement cage hoisting methods rely on manual hooking or unhooking. However, the hooks lack positioning and guiding functions, making hoisting prone to swaying. Some hoisting devices now use mechanical jaws for automatic locking. The hook is connected to the mechanical jaws, which are then lowered together and automatically locked to the load-bearing beam of the steel reinforcement cage. The mechanical jaws need to descend vertically and stably, aligning with the load-bearing beam for clamping. During hoisting, the hook and mechanical jaws lack a fixed structure, allowing relative movement between them and compromising stable hoisting. Utility Model Content
[0004] The technical problem to be solved by this utility model is that existing hoisting devices cannot accurately position the mechanical claws, and the hook may move during hoisting if the mechanical claws fall vertically and stably. The purpose is to provide a hoisting device with positioning guidance.
[0005] This utility model is achieved through the following technical solution:
[0006] A lifting device with positioning guidance is used for lifting a reinforcing steel cage; the reinforcing steel cage is provided with a guide sleeve; and further includes:
[0007] The limiting plate has a limiting hole in the center for fitting onto the top of the hook;
[0008] The first limiting part is located at the bottom of the limiting plate and is used to cooperate with the mechanical jaws to limit the hook;
[0009] The second limiting part is located at the bottom of the limiting plate and is used to cooperate with the guide sleeve to guide the mechanical jaws.
[0010] As one of the preferred technical solutions, the first limiting part includes two symmetrically arranged abutting parts. Each abutting part includes a lead screw and a limiting block. The lead screw is rotatably arranged on the limiting plate. The limiting block is threadedly connected to the lead screw and slidably connected to the limiting plate, and is used to abut against one side of the mechanical chuck.
[0011] As one of the preferred technical solutions, a drive knob is provided at one end of the lead screw.
[0012] As one of the preferred technical solutions, a C-shaped retaining ring is provided on the side of the limiting block near the mechanical gripper.
[0013] As one of the preferred technical solutions, the second limiting part includes straight rods arranged circumferentially on the limiting plate, and each straight rod has a positioning pin at its bottom that cooperates with the guide sleeve.
[0014] As one of the preferred technical solutions, each of the straight rods is connected to an adjustment component.
[0015] As one of the preferred technical solutions, the adjustment assembly includes a limiting rod, a slider, and a spring. The limiting rod is mounted on a limiting plate, and the slider is slidably mounted on the limiting rod and connected to the straight rod. There are two springs, both of which are sleeved on the limiting rod and located on both sides of the slider.
[0016] As one of the preferred technical solutions, the limiting hole is a cross hole, and the top of the hook is set as a support rod that cooperates with the cross hole.
[0017] As one of the preferred technical solutions, each of the guide sleeves is a tapered sleeve.
[0018] As one of the preferred technical solutions, each of the guide sleeves is equipped with a wear-resistant liner.
[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0020] 1. By setting a first limiting part, which abuts and fixes against the mechanical jaw, the stability of the connection between the hook and the mechanical jaw is ensured, thus ensuring the stable lifting of the hook.
[0021] 2. By setting a second limiting part, which cooperates with the guide sleeve on the steel reinforcement cage, the mechanical claw is guaranteed to fall stably and vertically, and to be firmly connected with the steel reinforcement cage, thus ensuring the normal progress of subsequent lifting operations. Attached Figure Description
[0022] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 This is a schematic diagram of the structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the bottom structure of the limiting plate of this utility model.
[0025] The attached diagram shows the markings and corresponding component names:
[0026] 1-Limiting plate, 2-Abutting part, 21-Screw rod, 22-Limiting block, 23-Drive knob, 3-Second limiting part, 31-Straight rod, 32-Positioning pin, 4-Adjusting component, 41-Limiting rod, 42-Slider, 43-Spring, 5-C-shaped retaining ring, 6-Support rod, 7-Hook, 8-Reinforcing steel skeleton, 9-Cross hole, 10-Mechanical claw, 11-Guide sleeve. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0028] Currently, the hoisting of the steel reinforcement cage 8 mostly relies on manual hooking or unhooking. However, the hook lacks positioning and guiding functions, making it prone to swaying during hoisting. Some hoisting devices now use mechanical jaws 10 for automatic locking. The hook is connected to the mechanical jaws 10, and then the mechanical jaws 10 and hook are lowered together to automatically lock into the load-bearing beam of the steel reinforcement cage 8. The mechanical jaws 10 need to be lowered vertically and stably, aligning with the load-bearing beam of the steel reinforcement cage 8 for clamping. During the hoisting process, the hook and mechanical jaws 10 lack a fixed structure, and the hook 7 may move relative to the mechanical jaws 10, making it impossible to guarantee stable hoisting.
[0029] To address the aforementioned problems, this embodiment provides a hoisting device with positioning guidance, such as... Figures 1-2 As shown, it is used for hoisting the reinforcing bar cage 8; the reinforcing bar cage 8 is provided with a guide sleeve 11; it also includes:
[0030] Limiting plate 1 has a limiting hole in the center for fitting onto the top of the hook;
[0031] The first limiting part is located at the bottom of the limiting plate 1 and is used to cooperate with the mechanical claw 10 to limit the hook;
[0032] The second limiting part 3 is located at the bottom of the limiting plate 1 and is used to cooperate with the guide sleeve 11 to guide the mechanical claw 10.
[0033] Specifically, the limiting plate 1 is a circular plate, which is fixedly installed on the top of the hook. The length of the second limiting part 3 is greater than that of the first limiting part. The length of the first limiting part is just aligned with the position of the mechanical claw 10 and is fixed against both sides of the mechanical claw 10. The first limiting part is located on the inner side of the limiting plate, and the second limiting part 3 is located on the outer side of the limiting plate 1.
[0034] The specific working process of this embodiment is as follows: at the beginning, the hook 7 is connected to the mechanical claw 10, and a guide sleeve 11 is preset on the steel frame 8 according to the position of the second limiting part 3. The guide sleeve 11 is located around the load-bearing beam of the steel frame 8. The first limiting part located on the limiting plate 1 is fixed against the mechanical claw 10. The stability of the connection between the hook 7 and the mechanical claw 10 is ensured by the fixing of the first limiting part, which further ensures the stable lifting and safety of the hook 7.
[0035] After the connection is secure, the machine is lifted and then the mechanical claw 10 is lowered. The second limiting part 3 is aligned with the guide sleeve 11 on the steel frame 8 to achieve guidance and positioning, ensuring the accuracy and stability of the mechanical claw 10 in lowering.
[0036] Specifically, the first limiting part includes two symmetrically arranged abutting parts 2. Each abutting part 2 includes a lead screw 21 and a limiting block 22. The lead screw 21 is rotatably arranged on the limiting plate 1. The limiting block 22 is threadedly connected to the lead screw 21 and slidably connected to the limiting plate 1, and is used to abut against one side of the mechanical claw 10.
[0037] Two abutting parts 2 are symmetrically arranged and located on both sides of the mechanical jaw 10. During operation, the abutting parts 2 approach and abut against the mechanical jaw 10. Specifically, the limiting plate 1 has a drive groove, and the drive groove also has a sliding hole for the limiting block 22 to slide. The sliding hole restricts the sliding of the limiting block 22, thereby ensuring the normal movement of the limiting block 22. The lead screw 21 is rotatably installed in the drive groove; when the lead screw 21 rotates, the limiting block 22, which is threadedly connected to the lead screw 21, begins to move towards the mechanical jaw 10 until it abuts against the mechanical jaw 10.
[0038] When disengaged, the lead screw 21 rotates in the opposite direction, and the limiting block 22, which is threadedly connected to the lead screw 21, begins to move away from the mechanical jaw 10 until it separates from the mechanical jaw 10.
[0039] Specifically, a drive knob 23 is provided at one end of the lead screw 21. The drive knob 23 is manually driven by the operator to ensure the normal operation of the first limit part.
[0040] As another implementation, to further increase the stability of the connection of the limiting block 22, a C-shaped retaining ring 5 is provided on the side of the limiting block 22 near the mechanical claw 10. Specifically, the opening of the C-shaped retaining ring 5 is aligned with the mechanical claw 10, and the C-shaped retaining ring 5 increases the contact area between the limiting block 22 and the mechanical claw 10, thereby ensuring a stable connection between both sides of the mechanical claw 10 and the limiting block 22.
[0041] In another implementation, the second limiting part 3 includes straight rods 31 arranged circumferentially on the limiting plate 1, and each straight rod 31 has a positioning pin 32 at its bottom that cooperates with the guide sleeve 11. Specifically, there are four straight rods 31 and four positioning pins 32, and the straight rods 31 are staggered with the limiting block 22. Correspondingly, the workers also pre-set four guide sleeves 11 on the steel frame 8, with the four positioning pins 32 corresponding to each other. When lowering, the positioning pins 32 are aligned with the guide sleeves 11, thereby ensuring the stability and vertical drop of the mechanical claw 10. The mechanical claw 10 effectively clamps the load-bearing beam of the steel frame 8, ensuring the normal operation of subsequent lifting work.
[0042] In another implementation, since the positioning pin 32 and the guide sleeve 11 need to be fitted together, and since the guide sleeve 11 is preset by the operator, there may be positioning deviations between some guide sleeves 11 and the corresponding positioning pins 32. Based on this, this embodiment is configured such that each of the straight rods 31 is connected to an adjustment component 4.
[0043] Specifically, the adjusting component 4 slightly adjusts the position of the positioning pins 32 so that each positioning pin 32 can properly enter the corresponding limiting sleeve, thereby avoiding hard contact between the positioning pins 32 and the limiting sleeve, which would affect the positioning process. It should be noted that the adjusting component 4 is used to slightly adjust the positioning deviation between the positioning pins 32 and the guide sleeve 11, but does not affect the accurate positioning of the positioning pins 32 and the guide sleeve 11 to ensure the stable vertical descent of the mechanical jaw 10.
[0044] In another embodiment, the adjustment component 4 includes a limiting rod 41, a slider 42, and a spring 43. The limiting rod 41 is mounted on the limiting plate 1, and the slider 42 is slidably mounted on the limiting rod 41 and connected to the straight rod 31. There are two springs 43, both of which are sleeved on the limiting rod 41 and located on both sides of the slider 42.
[0045] Specifically, a sliding groove is provided at the bottom of the limiting plate 1, and the limiting rod 41 is installed in the sliding groove. Springs 43 are provided on both the left and right sides of the slider 42. Initially, the slider 42 is located in the middle of the limiting rod 41. When the positioning pin 32 is lowered, the guide sleeve 11 is located to its left. After the guide sleeve 11 abuts against the positioning pin 32, the positioning pin 32 moves a little distance to the left under the traction of the guide sleeve 11. At this time, the spring 43 on the left side of the slider 42 is compressed, and the spring 43 on the right side of the slider 42 is stretched. The slider 42 moves accordingly to adjust the position of the positioning pin 32 and stably enters the guide sleeve 11. Similarly, when the guide sleeve 11 is located to the right of the positioning pin 32, the positioning pin 32 moves a little distance to the right under the traction of the guide sleeve 11. When the positioning pin 32 extends out of the guide sleeve 11, the spring 43 drives the slider 42 to return to its original position.
[0046] In another embodiment, the limiting hole is a cross hole 9, and the top of the hook is configured with a support rod 6 that mates with the cross hole 9. Specifically, the limiting hole is a cross hole 9 that mates with the support rod 6. Due to the limiting of the limiting plate 1, the support rod 6 is prevented from rotating relative to the limit, further improving the stable lifting of the hook 7.
[0047] In another embodiment, each of the guide sleeves 11 is a conical sleeve. The conical sleeve is a frustum shape that is wider at the top and narrower at the bottom. When the positioning pin 32 is lowered, the conical sleeve has sufficient contact area to ensure that the positioning pin 32 enters. As the insertion depth of the positioning pin 32 increases, the conical sleeve guides the positioning pin 32 to a certain extent, and the positioning pin 32 falls steadily, eventually driving the mechanical jaw 10 to fall steadily and vertically.
[0048] In another implementation, each guide sleeve 11 is fitted with a wear-resistant pad. Since the locating pin 32 needs to engage with the guide sleeve 11 for positioning when it moves downwards, there may be a slight deviation between the positions of the locating pin 32 and the guide sleeve 11. Installing the wear-resistant pad inside the guide sleeve 11, with the locating pin 32 in direct contact with the pad, serves to absorb wear through the wear resistance of the material itself, preventing the guide sleeve 11 from being directly damaged by friction. The wear-resistant pad is typically made of materials with a low coefficient of friction, such as polytetrafluoroethylene (PTFE) or ultra-high molecular weight polyethylene (UHMWPE), which can reduce frictional resistance during equipment operation and reduce energy loss.
[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A hoisting device with positioning guide for hoisting a steel reinforcement cage, characterized in that, The reinforcing steel cage is provided with a guide sleeve; it also includes: The limiting plate has a limiting hole in the center for fitting onto the top of the hook; The first limiting part is located at the bottom of the limiting plate and is used to cooperate with the mechanical jaws to limit the hook; The second limiting part is located at the bottom of the limiting plate and is used to cooperate with the guide sleeve to guide the mechanical jaws.
2. The hoisting device with positioning guide according to claim 1, characterized in that, The first limiting part includes two symmetrically arranged abutting parts. Each abutting part includes a lead screw and a limiting block. The lead screw is rotatably arranged on the limiting plate. The limiting block is threadedly connected to the lead screw and slidably connected to the limiting plate, and is used to abut against one side of the mechanical chuck.
3. The hoisting device with positioning guidance according to claim 2, characterized in that, A drive knob is provided at one end of the lead screw.
4. The hoisting device with positioning guidance according to claim 2, characterized in that, A C-shaped retaining ring is provided on the side of the limiting block near the mechanical jaw.
5. The hoisting device with positioning guidance according to claim 1, characterized in that, The second limiting part includes straight rods arranged circumferentially on the limiting plate, and each straight rod has a positioning pin at its bottom that cooperates with the guide sleeve.
6. The hoisting device with positioning guidance according to claim 5, characterized in that, Each of the straight rods is connected to an adjustment assembly.
7. The hoisting device with positioning guidance according to claim 6, characterized in that, The adjustment assembly includes a limiting rod, a slider, and a spring. The limiting rod is mounted on a limiting plate, and the slider is slidably mounted on the limiting rod and connected to the straight rod. There are two springs, both of which are sleeved on the limiting rod and located on both sides of the slider.
8. The hoisting device with positioning guidance according to claim 1, characterized in that, The limiting hole is a cross hole, and the top of the hook is set as a support rod that mates with the cross hole.
9. The hoisting device with positioning guidance according to claim 1, characterized in that, Each of the guide sleeves is a tapered sleeve.
10. The hoisting device with positioning guidance according to claim 1, characterized in that, Each of the guide sleeves is equipped with a wear-resistant liner.