A pipe hoisting tool
The pipe hoisting tool with a screw and moving block structure solves the problems of cumbersome operation and difficulty in ensuring pipe balance in the existing technology, and realizes a simplified operation and a safe and efficient hoisting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA STATE CONSTR ZHONGXIN CONSTR ENG CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-26
AI Technical Summary
Existing pipe hoisting tools are cumbersome to operate, making it difficult to ensure pipe balance, and require the replacement of different inner diameter clamps according to the outer diameter of the pipe, resulting in high construction difficulty.
The lifting tool adopts a screw and moving block structure. The screw is driven by a drive mechanism to rotate, thereby locking and releasing the hook, ensuring pipeline balance, and is fixed by positioning bolts, simplifying the operation process.
It simplifies pipeline hoisting operations, improves efficiency, avoids pipeline tilting and safety risks, adapts to different pipeline diameters without the need to change the hook, and ensures the safety and convenience of construction.
Smart Images
Figure CN224279519U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of construction tool technology, specifically relating to a pipe hoisting tool. Background Technology
[0002] During the construction of water supply and drainage systems, it is usually necessary to install rigid pipes of varying lengths to facilitate the transportation of water and water. This process requires the use of hoisting tools to lift the pipes so that workers can install them.
[0003] Most existing pipe hoisting tools use clamps to hold the pipe tightly against the outer wall before connecting to a crane. To ensure the pipe's balance in the air, the two clamps need to be symmetrically positioned about the pipe's center, thus keeping the center of gravity in the middle and preventing the pipe from tilting during hoisting. However, due to human error, even with these measures, the pipe still has a significant chance of tilting (e.g., asymmetrical clamp installation or clamp slippage in the air). Furthermore, after the pipe is hoisted into place, each clamp arm needs to be removed individually, making the entire process cumbersome and increasing the difficulty of subsequent pipe installation. In addition, existing methods have the following drawbacks: different inner diameter clamps are required for pipes with different outer diameters. Utility Model Content
[0004] This invention discloses a pipe hoisting tool, which aims to solve the problems of cumbersome operation, high construction difficulty, and the need to replace different inner diameter clamps for different outer diameter pipes caused by the existing hoisting method of connecting pipes with clamps.
[0005] To achieve the above objectives, the technical solution of this invention is as follows:
[0006] A pipe hoisting tool includes a hoisting frame, within which a lead screw is rotatably connected. A drive mechanism is located at one end of the lead screw, outside the hoisting frame. The lead screw is formed by connecting two lead screw bodies with opposite thread directions. Moving blocks are screwed onto both lead screw bodies. Hooks are connected to the bottom of each of the two moving blocks, and these hooks are used to hook the outer end of the pipe. Several positioning holes are provided along the length of the top of the hoisting frame, and positioning bolts penetrate these holes and are screwed into threaded holes at the top of the moving blocks.
[0007] Preferably, guide rods are provided on the inner side of the hoisting frame and above and below the lead screw, respectively. The two ends of the guide rods are fixedly connected to the left and right ends of the hoisting frame, respectively. The moving block passes through the two guide rods and is slidably connected to the guide rods.
[0008] Preferably, the hoisting frame has straight grooves and straight through grooves at four edges along its length and on the front and rear side walls, respectively. Two movable frames are slidably fitted on the outside of the hoisting frame. The inner corners of the movable frames are slidably connected to the straight grooves via slider one. The inner walls of the movable frames are respectively provided with slider two that penetrates the straight through grooves. The inner end of slider two is fixedly connected to the outer wall of the corresponding movable block. Sliding slider two is slidably engaged with the straight through grooves. The top of the movable frame is provided with a through hole for a positioning bolt to pass through.
[0009] Preferably, the outer wall of the hoisting frame is provided with scale lines along the length direction. The 0 point of the scale line is located within the intersection of the cross section perpendicular to the axis of the hoisting frame and the surface of the hoisting frame, where the center position of the hoisting frame is located. The center position is set as the center of gravity of the hoisting frame. The scale lines on both sides of the 0 point are marked with positive and negative scales, respectively. The two moving blocks are symmetrically arranged about the cross section where the 0 point is located.
[0010] Preferably, the bottom end of the movable block is fixedly connected to a mounting base, the mounting base passing through a through groove provided at the bottom of the hoisting frame and arranged along the length direction, and is fixedly connected to the top end of the hook.
[0011] Preferably, the drive mechanism includes a turntable located at one end of the hoisting frame, the center of the inner end of the turntable being fixedly connected to the end of the lead screw, and a handle being provided on the edge of the outer surface of the turntable.
[0012] Preferably, the top of the movable frame is provided with lifting rings on both sides.
[0013] Preferably, the bottom of the hoisting frame is provided with pull rings at both ends, and the pull rings are connected to ropes.
[0014] The beneficial effects of this new type of pipe hoisting tool are as follows:
[0015] This new type of lifting device eliminates the need for a clamp structure. In use, two hooks are attached to the two ends of the pipe, and the two hooks are locked in place by the drive mechanism. Then, the positioning bolts are inserted and tightened, allowing the crane to lift the pipe along with the lifting frame. When the drive mechanism rotates the lead screw, the two moving blocks move simultaneously towards or away from each other, thus locking and releasing the pipe. The operation is simple, efficient, and eliminates the need to change hooks based on the pipe diameter. The two moving blocks are symmetrically positioned about the zero point, and the drive mechanism simultaneously moves both blocks, ensuring the pipe remains balanced during lifting and avoiding operational inconvenience and safety risks caused by pipe tilting. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this novel invention;
[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention;
[0018] Figure 3 This is a schematic diagram of the side cross-sectional structure of the present invention;
[0019] The markings in the diagram are: 1. Lifting frame; 2. Moving frame; 3. Lifting ring; 4. Lead screw; 41. Lead screw body one; 42. Lead screw body two; 5. Moving block; 6. Mounting base; 7. Hook; 8. Turntable; 9. Handle; 10. Guide rod; 11. Slide rail; 12. Sliding block structure; 13. Positioning hole; 14. Positioning bolt; 15. Through groove; 16. Scale line; 17. Rope; 18. Pull ring; 19. Pipe; 20. Zero point; 21. Through hole. Detailed Implementation
[0020] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
[0021] The following embodiments can be understood as a part of the local structure or method of the present invention, or as a combination of embodiments to explain the connotation of a larger range of structures or methods of the present invention.
[0022] In this embodiment, the present invention provides a pipe hoisting tool, such as... Figure 1-3 As shown, the system includes a lifting frame 1, within which a lead screw 4 is rotatably connected. A drive mechanism is located at one end of the lead screw 4, outside the lifting frame 1. The lead screw 4 is formed by connecting two lead screw bodies 41 and 42 with opposite thread directions. Moving blocks 5 are screwed onto both lead screw bodies 41 and 42. Two opposing hooks 7 are connected to the bottom of each moving block 5. The hooks 7 are used to hook the outer end of the pipe 19. Several positioning holes 13 are provided along the length of the top of the lifting frame 1. Positioning bolts 14 penetrate the positioning holes 13 and are screwed into the threaded holes at the top of the moving blocks 5. In this embodiment, a clamp structure is not required. During use, the two hooks are hooked onto the two ends of the pipe, the two hooks are locked by the drive mechanism, and then the positioning bolts are inserted and tightened. The lifting frame and pipe can then be lifted together by a crane. When the drive mechanism rotates the lead screw, the two moving blocks move simultaneously toward each other or toward each other, thereby locking and releasing the pipe. The operation is simple and efficient, and there is no need to change the hook according to the pipe diameter.
[0023] In this embodiment, as Figure 2As shown, guide rods 10 are respectively provided above and below the lead screw 4 inside the lifting frame 1. Both ends of the guide rods 10 are fixedly connected to the left and right ends of the lifting frame 1. The moving blocks 5 respectively pass through the two guide rods 10 and are slidably connected to the guide rods 10. The lifting frame 1 is a long rod in the shape of a cube with a hollow interior. The purpose of setting the guide rods is to prevent the moving blocks from rotating around the lead screw.
[0024] In this embodiment, as Figure 1 shown, linear sliding grooves and linear through-sliding grooves (i.e., slide ways 11) are respectively provided at the four ridge lines along the length direction of the lifting frame 1 and on the front and rear side walls. Two moving frames 2 are slidably sleeved outside the lifting frame 1. The inner corners of the moving frames 2 are slidably connected to the linear sliding grooves through the first sliders. The inner walls of the moving frames 2 are respectively provided with second sliders (the first sliders and the second sliders are collectively referred to as slider structures 12) that penetrate the linear through-sliding grooves. The inner ends of the second sliders are fixedly connected to the outer walls of the corresponding moving blocks 5. The second sliders are slidably engaged with the linear through-sliding grooves. Through holes 21 for passing through positioning bolts 14 are provided at the tops of the moving frames 2. In this embodiment, the moving frames and the corresponding moving blocks are connected into an integral structure through the second sliders, and they are slidably engaged with the lifting frame through the slider structures 12. That is, it can obviously show the position of the moving blocks on the outer surface of the lifting frame, indirectly reflecting the position of the lifting hook. The positioning bolts pass through the through holes and tighten the moving blocks to fix the three with the lifting frame, thus ensuring the safety during the process of lifting the pipeline.
[0025] In this embodiment, as Figure 1-3 shown, scale lines (a common technique, not shown in the figure) are provided on the outer wall of the lifting frame 1 along the length direction. The 0 point of the scale lines is located within the intersection line of the section perpendicular to the axis of the lifting frame 1 where the center position of the lifting frame is located and the surface of the lifting frame. The center position is set as the center of gravity of the lifting frame. The scale lines on both sides of the 0 point are respectively marked with positive and negative scales. The two moving blocks are symmetrically arranged with respect to the section where the 0 point is located. The driving mechanism simultaneously drives the two moving blocks to move. When lifting the pipeline, it ensures that the pipeline is in a balanced state, avoiding the inconvenience of operation and safety risks caused by the inclination of the pipeline.
[0026] In this embodiment, as Figure 2 、 3 shown, an installation seat 6 is fixedly connected to the bottom end of the moving block 5. The installation seat 6 penetrates through a through groove 16 (as Figure 2 shown) provided at the bottom of the lifting frame 1 along the length direction and is fixedly connected to the top end of the lifting hook 7. The lifting hook can be set to have a "C" - shaped cross - section with the two arms expanding outwards.
[0027] In this embodiment, as Figure 2As shown, the drive mechanism includes a turntable 8 located at one end of the lifting frame 1. The center of the inner end of the turntable 8 is fixedly connected to the end of the lead screw 4, and a handle 9 is provided on the edge of the outer surface of the turntable 8. Rotating the handle 9 rotates the lead screw.
[0028] In this embodiment, as Figure 1 As shown, the top two sides of the movable frame 2 are respectively provided with lifting rings 3 for connecting to the crane.
[0029] In this embodiment, as Figure 2 As shown, the bottom of the hoisting frame 1 is provided with pull rings 18 at both ends. The pull rings 18 are connected to ropes 17. When hoisting the pipe, the workers pull the ropes from both sides to quickly position and lower the pipe. When the pipe is lowered to the installation position, the handle is rotated and the two hooks move outward synchronously. After the hooks are removed from the pipe, the hoisting frame is taken off the pipe.
Claims
1. A pipe handling tool characterised in that: The system includes a lifting frame, within which a lead screw is rotatably connected. One end of the lead screw, located outside the lifting frame, is equipped with a drive mechanism. The lead screw is formed by connecting two lead screw bodies with opposite thread directions. Moving blocks are screwed onto both lead screw bodies. The bottom of each of the two moving blocks is connected to a hook positioned opposite to the other. The hooks are used to hook the outer end of the pipe. Several positioning holes are provided along the length of the top of the lifting frame. Positioning bolts pass through these positioning holes and are screwed into the threaded holes at the top of the moving blocks.
2. A pipe handling tool as claimed in claim 1, characterised in that: Inside the hoisting frame, above and below the lead screw, there are guide rods respectively. The two ends of the guide rods are fixedly connected to the left and right ends of the hoisting frame, and the moving block passes through the two guide rods and is slidably connected to the guide rods.
3. A pipe handling tool as claimed in claim 2, characterised in that: The hoisting frame has straight grooves and straight through grooves at four edges along its length and on the front and rear side walls. Two movable frames are slidably fitted on the outside of the hoisting frame. The inner corners of the movable frames are slidably connected to the straight grooves via slider one. The inner walls of the movable frames are each provided with slider two that penetrates the straight through grooves. The inner ends of slider two are fixedly connected to the outer walls of the corresponding movable blocks. Sliding slider two is slidably engaged with the straight through grooves. The top of the movable frame is provided with a through hole for a positioning bolt to pass through.
4. A pipe handling tool as claimed in claim 3, characterised in that: The outer wall of the hoisting frame is provided with scale lines along its length. The 0 point of the scale line is located within the intersection of the cross section perpendicular to the axis of the hoisting frame and the surface of the hoisting frame, where the center position of the hoisting frame is located. The center position is set as the center of gravity of the hoisting frame. The scale lines on both sides of the 0 point are marked with positive and negative scales, respectively. The two moving blocks are symmetrically arranged about the cross section where the 0 point is located.
5. A pipe handling tool as claimed in claim 4, characterised in that: The bottom end of the movable block is fixedly connected to a mounting base, which is located through a through slot at the bottom of the hoisting frame and along its length, and is fixedly connected to the top end of the hook.
6. A pipe handling tool as claimed in claim 5, characterised in that: The drive mechanism includes a turntable located at one end of the hoisting frame. The center of the inner end of the turntable is fixedly connected to the end of the lead screw, and a handle is provided on the edge of the outer surface of the turntable.
7. A pipe handling tool as claimed in claim 6, characterised in that: The movable frame is provided with lifting rings on both sides of its top.
8. A pipe handling tool as claimed in claim 7, characterised in that: The bottom of the hoisting frame is provided with pull rings at both ends, and the pull rings are connected to ropes.