A precast concrete pipe joint vertical hoisting tool
By designing a vertical hoisting tool for precast concrete pipe sections and utilizing a combination of sliding and supporting components, the problems of poor adaptability and safety hazards of existing hoisting tools have been solved, achieving safe and convenient pipe section hoisting and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MCC TIANGONG GROUP TIANJIN CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, fixed lifting devices cannot adapt to precast concrete pipe sections of different diameters or lengths, and the wire rope binding method leads to uneven stress, posing safety hazards. Furthermore, the lifting operation is cumbersome and affects construction efficiency.
Design a vertical hoisting tool for precast concrete pipe sections, including a base, fixing components, sliding components, lifting rings, and multiple support components. Through the combination of sliding components and support components, adaptive hoisting of different pipe diameters can be achieved, ensuring stability and safety.
This enabled the safe and convenient hoisting of concrete pipe sections, saving time, avoiding damage to the pipe sections, and reducing construction costs.
Smart Images
Figure CN224547893U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipe section hoisting technology, and in particular relates to a vertical hoisting tool for precast concrete pipe sections. Background Technology
[0002] In the construction process of building and municipal engineering projects, vertical hoisting of certain pipe sections is often required, especially for precast concrete pipe sections with large diameters (≥1.5m), short lengths (≤3m), and heavy weights (≥5 tons). The hoisting angle is typically required to be ≤2°. Current technologies often employ fixed hoisting tools or wire rope binding for pipe section hoisting. However, fixed hoisting tools cannot accommodate pipe sections of different diameters or lengths, requiring frequent tool changes, which is time-consuming and labor-intensive. Furthermore, direct contact between the hoisting tools and the pipe section can easily cause surface indentations or internal cracks. Wire rope binding, on the other hand, can lead to uneven stress on the pipe section, causing it to sway or tilt during hoisting, posing safety hazards and failing to meet the stringent vertical hoisting requirements. Additionally, both of these methods require on-site welding or assembly of the hoisting tools, and adjustment of the hoisting height and angle, making the operation cumbersome and difficult, severely impacting construction efficiency. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a vertical hoisting tool for precast concrete pipe sections, which makes the vertical hoisting of pipe sections safer, the installation and dismantling more convenient, saves hoisting time, and can effectively prevent damage to the pipe sections.
[0004] The technical solution adopted in this utility model is as follows: a vertical hoisting tool for precast concrete pipe sections, comprising: a base, a fixing component, a sliding component, a lifting ring, and multiple supporting components; the bottom end of the fixing component is connected to the base; the lifting ring is disposed at the top end of the fixing component; the sliding component is slidably connected to the fixing component and can reciprocate along the length direction of the fixing component; the supporting component includes a first supporting rod and a second supporting rod; the bottom end of the second supporting rod is hinged to the base, and the top end is provided with a supporting part for abutting against the inner wall of the pipe section, and a connecting part is provided between the bottom end and the top end of the second supporting rod; one end of the first supporting rod is hinged to the sliding component, and the other end is hinged to the connecting part.
[0005] Furthermore, the support members are evenly arranged circumferentially around the fixing member.
[0006] Furthermore, the projections of the first support rod and the second support rod on the chassis extend radially along the fixing member.
[0007] Furthermore, the sliding member is sleeved on the fixing member, and its inner diameter is larger than the outer diameter of the fixing member.
[0008] Furthermore, the outer wall of the sliding member is uniformly provided with a plurality of first hinge seats, the connecting part is provided with a second hinge seat, and the chassis is provided with a third hinge seat. The first hinge seat, the second hinge seat and the second hinge seat all include a pin, and the pin is arranged perpendicular to the radial direction of the fixing member.
[0009] Furthermore, the support includes an anti-slip support foot, the anti-slip support foot includes an anti-slip surface facing away from the fixing member, and the anti-slip surface is provided with a flexible pad.
[0010] Furthermore, the first support rod is a telescopic rod with adjustable length.
[0011] Furthermore, the first support rod includes an adjusting member and connecting rods disposed at both ends of the adjusting member. The adjusting member is a cavity structure with openings at both ends, and the connecting rods are threadedly connected to the adjusting member.
[0012] Furthermore, the second support rod includes a plurality of detachably connected support sections, adjacent support sections being connected by bolts.
[0013] The advantages and positive effects of this utility model are:
[0014] (1) By setting up a chassis, fixing parts, sliding parts, lifting rings and multiple supporting parts, the vertical hoisting of pipe sections is safer and the installation and dismantling are more convenient, saving hoisting time and effectively preventing damage to pipe sections.
[0015] (2) By designing a sliding component fitted onto a fixed component, the sliding component can move freely along the fixed component; the bottom end of the second support rod is hinged to the chassis, one end of the first support rod is hinged to the sliding component, and the other end is hinged to the connecting part; the first support rod and the second support rod are evenly arranged around the fixed component in the circumference, and the projection of the first support rod and the second support rod on the chassis extends radially along the fixed component, which improves the stability of the support component connection structure, not only making the circumferential force of the pipe section more balanced, but also improving the reliability and safety of the pipe section during the hoisting process.
[0016] (3) The sliding parts and support parts are designed to be applicable to precast concrete pipe sections of different diameters, enabling overall installation and dismantling, making it easier to reuse and reducing construction costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the connection between the fixing member and the support member in a specific embodiment of this utility model;
[0019] Figure 3This is a schematic diagram of the connection between the first support rod and the second support rod in a specific embodiment of this utility model;
[0020] Figure 4 This is a schematic diagram of the connection between the support member and the chassis in a specific embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram illustrating the use of a specific embodiment of this utility model.
[0022] In the picture:
[0023] 1. Chassis; 11. Third hinge seat; 2. Fixing component; 3. Sliding component; 31. First hinge seat; 4. Support component; 41. Second support rod; 411. Second hinge seat; 412. Support part; 42. First support rod; 421. Adjusting component; 422. Connecting rod; 5. Lifting ring; 6. Pipe section. Detailed Implementation
[0024] The embodiments of this utility model will now be described with reference to the accompanying drawings.
[0025] This utility model embodiment provides a vertical hoisting tool for precast concrete pipe sections, such as... Figures 1 to 5As shown, the vertical hoisting tool for the precast concrete pipe section 6 includes: a base plate 1, a fixing member 2, a sliding member 3, a lifting ring 5, and multiple support members 4; the bottom end of the fixing member 2 is connected to the base plate 1; the lifting ring 5 is set at the top end of the fixing member 2; the sliding member 3 is slidably connected to the fixing member 2 and can reciprocate along the length direction of the fixing member 2; the support member 4 includes a first support rod 42 and a second support rod 41; the bottom end of the second support rod 41 is hinged to the base plate 1, and the top end is provided with a support part 412 for abutting against the inner wall of the pipe section 6, and a connecting part is provided between the bottom end and the top end of the second support rod 41; one end of the first support rod 42 is hinged to the sliding member 3, and the other end is hinged to the connecting part. It should be noted that, since the sliding member 3 can slide along the fixed member 2, and the first support rod 42 is hinged to the sliding member 3, moving the sliding member 3 can drive one end of the first support rod 42 to move along the length direction of the fixed member 2, while simultaneously rotating around its hinge point with the sliding member 3; and the other end of the first support rod 42 is hinged to the second support rod 41. Therefore, when the first support rod 42 moves along the length direction of the fixed member 2, it can adjust the relative angle between the second support rod 41 and the fixed member 2, thereby allowing the second support rod 42 to move. The top support 412 is located away from or near the fixing member 2, so as to abut against the inner wall of the pipe section 6 or away from the inner wall of the joint; when the support 412 abuts against the inner wall of the pipe section 6, the support member 4 provides an upward support force to the pipe section 6. This support force can be decomposed into a horizontal component and a vertical component. The horizontal component forms an effective positive pressure on the side wall of the pipe section 6, so that an upward frictional force is generated between the support 412 and the pipe section 6 during the hoisting process, which, together with the vertical component of the support force, resists the weight of the pipe section 6 itself, thereby achieving stable and safe hoisting of the pipe section 6.
[0026] Using the aforementioned vertical hoisting tool for precast concrete pipe section 6, when needed, the entire pipe section 6 can be placed inside. Then, the sliding member 3 is adjusted to move along the fixed member 2 towards its bottom, causing the support portion 412 of the second support rod 41 to move away from the fixed member 2 until all support portions 412 are in contact with the inner wall of the pipe section 6. Subsequently, the lifting ring 5 at the top of the fixed member 2 is connected to the hoisting equipment. During hoisting, the hoisting equipment exerts an upward lifting force on the lifting ring 5 and the fixed member 2, causing the fixed member 2 to have an upward movement tendency relative to the sliding member 3, thereby enabling the support... Part 412 abuts against the inner wall of pipe section 6, providing sufficient support for pipe section 6 and enabling vertical hoisting of pipe section 6. After pipe section 6 is hoisted into place, the sliding member 3 is adjusted to move along the top of the fixing member 2, so that the support part 412 of the second support rod 41 moves closer to the fixing member 2, thereby separating the support part 412 from the inner wall of pipe section 6, and the precast concrete pipe section 6 can be removed as a whole. Compared with the existing hoisting methods, this application is not only safer and more convenient to install and dismantle, saving hoisting time, but also effectively avoids damage to pipe section 6.
[0027] It should be noted that in the above embodiment, the shape of the chassis 1 is much smaller than the shape of the pipe section 6 to be hoisted, so that the overall hoisting tool can be placed inside the pipe section 6; the second support rod 41 has sufficient length to cooperate with the first support rod 42 and abut against the inner wall of the pipe section 6; the first support rod 42 has sufficient length so that the support part 412 of the second support rod 41 extends outward by a sufficient range after moving away from the fixing member 2, so as to adapt to the current state of the pipe section 6; preferably, the length of the first support rod 42 should satisfy that when it is perpendicular to the fixing member 2, the second support rod 41 is inclined outward relative to the fixing member 2.
[0028] Furthermore, in this embodiment, the support member 4 is evenly arranged around the fixing member 2 circumferentially. That is, the first support rod 42 and the second support rod 41 are both evenly arranged around the fixing member 2 circumferentially, and the support part 412 is also evenly arranged relative to the fixing member 2 circumferentially. This allows multiple support parts 412 to abut against the inner wall of the pipe section 6, forming a uniform supporting force on the pipe section 6, making the circumferential force on the pipe section 6 more balanced, which is beneficial to improving the stability and safety of the pipe section 6 during the hoisting process.
[0029] Furthermore, in this embodiment, the projections of the first support rod 42 and the second support rod 41 on the chassis 1 extend radially along the fixing member 2. It should be noted that this configuration allows one end of the first support rod 42 to be hinged to the sliding member 3, with its axis and hinge point on the same vertical plane as the axis of the fixing member 2; the other end of the first support rod 42 is hinged to the second support rod 41, with its axis and hinge point on the same vertical plane as the second support rod 41; the axis of the second support rod 41 is on the same vertical plane as the hinge point on the chassis 1. Therefore, the axes of the first support rod 42, the second support rod 41, and the aforementioned hinge points are all located in the same vertical plane. By rationally arranging the hinge points and the axes of the support member 4, the connection structure of the support member 4 is confined to a two-dimensional plane. This configuration not only avoids lateral forces (such as lateral swaying or torsion) that may occur in three-dimensional space, significantly improving the structure's resistance to displacement in the vertical direction, but also ensures that the first support rod 42 and the second support rod 41 only bear axial forces, avoiding the generation of bending moments, improving the stability of the connection structure of the support member 4, preventing deformation or stiffness reduction after long-term use, and enhancing the reliability of use.
[0030] Furthermore, in this embodiment, the sliding member 3 is sleeved on the fixed member 2, and its inner diameter is larger than the outer diameter of the fixed member 2. The sliding member 3 is used to drive one end of the first support to move along the length direction of the fixed member 2. The inner diameter of the sliding member 3 is larger than the outer diameter of the fixed member 2, and the two form a clearance fit to reduce the frictional resistance between the sliding member 3 and the fixed member 2, so that the sliding member 3 can move freely along the fixed member 2. It should be noted that the inner diameter of the sliding member 3 should not be too large to avoid the movement path of the sliding member 3 from deviating radially towards the fixed member 2, so that the sliding member 3 can drive multiple support members 4 to move in the same motion state, ensuring that the distance between the multiple support parts 412 and the fixed member 2 is basically the same during the movement, and can simultaneously abut against the inner wall of the pipe section 6, so that the force on the pipe section 6 is more uniform. At the same time, by sleeved on the fixed member 2, the sliding member 3 has a larger range of movement, so that the distance between the support part 412 and the fixed member 2 has a larger adjustable range to adapt to pipe sections 6 with different diameters.
[0031] In some other embodiments of this application, the fixing member 2 may also be configured to have multiple sliding grooves arranged along its axial direction, and the sliding member 3 is slidably connected in the sliding groove, which can also realize the sliding fit between the sliding member 3 and the fixing member 2; other structural forms that can realize the sliding connection between the sliding member 3 and the fixing member 2 may also be adopted, which are not limited here.
[0032] Furthermore, in the embodiments of this application, such as Figures 2 to 4 As shown, the outer wall of the sliding member 3 is uniformly provided with a plurality of first hinge seats 31, the connecting part is provided with a second hinge seat 411, and the chassis 1 is provided with a third hinge seat 11. The first hinge seat 31, the second hinge seat 411 and the second hinge seat 411 all include a pin, and the pin is arranged perpendicular to the radial direction of the fixing member 2. Specifically, one end of the first support rod 42 is connected to the first hinge seat 31, and the pin of the first hinge seat 31 passes perpendicularly through the end of the first support rod 42; the other end of the first support rod 42 is connected to the second hinge seat 411 of the second support rod 41, and the pin of the second hinge seat 411 is parallel to the pin of the first hinge seat 31 and passes perpendicularly through the end of the first support rod 42; the bottom end of the second support rod 41 is connected to the third hinge seat 11 of the chassis 1, and the pin of the third hinge seat 11 is parallel to the pin of the second hinge seat 411 and passes perpendicularly through the bottom end of the second support rod 41. This configuration allows the first support rod 42 to rotate around the first hinge seat 31, the first support rod 42 and the second support rod 41 to rotate relative to each other, and the second support rod 41 to rotate around the third hinge seat 11, forming a multi-angle coordinated operation. This ensures the stability of the overall structure and the smooth rotation of each component, while also making the overall structure more compact, avoiding mutual interference between components, facilitating the expansion and contraction of the overall support member 4, improving the stability of the structure and the ease of use of hoisting tools.
[0033] Furthermore, in this embodiment, the support part 412 includes an anti-slip support foot, which includes an anti-slip surface facing away from the fixing member 2. The anti-slip surface is provided with a flexible pad. Specifically, the flexible pad has good toughness and anti-deformation properties, and can undergo pressure deformation when the anti-slip support foot abuts against the inner wall of the pipe section 6, so as to ensure that there is sufficient contact area between the anti-slip surface and the inner wall of the pipe section 6. On the one hand, it can achieve the anti-slip function, and on the other hand, it avoids hard contact between the anti-slip support foot and the pipe section 6, forming protection for the inner wall of the pipe section 6 and preventing it from being scratched or squeezed under the supporting force of the support member 4.
[0034] Furthermore, in this embodiment, the first support rod 42 is an adjustable telescopic rod. In this application, because the sliding member 3 can automatically slide along the fixing member 2, the distance between the support portion 412 of the support member 4 and the fixing member 2 varies depending on the position of the sliding member 3 on the fixing member 2, allowing it to adapt to pipe sections 6 of different diameters. It is understood that when the first support rod 42 is perpendicular to the fixing rod, the distance between the support portion 412 of the second support rod 41 and the fixing member 2 is the largest. That is, the length of the first support rod 42 limits the maximum pipe diameter that the lifting tool can apply. Therefore, in this application, by setting the first support rod 42 as an adjustable telescopic rod, the lifting tool can adjust the distance between the support portion 412 and the fixing member 2 within a wider range, making it suitable for lifting pipe sections 6 with larger diameters.
[0035] Furthermore, in the above embodiment, the first support rod 42 also has an auxiliary installation function. Specifically, when the overall hoisting tool is placed inside the pipe section 6, the position of the sliding member 3 is first adjusted so that the support part 412 makes initial contact with the inner wall of the pipe section 6. Then, by adjusting the length of the first support rod 42 to extend it, the support part 412 can be pressed against the inner wall of the pipe section 6, which improves the reliability and convenience of connecting the hoisting tool with the pipe section 6.
[0036] In one alternative technical solution of the above embodiment, the first support rod 42 includes an adjusting member 421 and connecting rods 422 disposed at both ends of the adjusting member 421. The adjusting member 421 is a cavity structure with openings at both ends, and the connecting rods 422 are threadedly connected to the adjusting member 421. Specifically, one end of the connecting rod 422 is provided with an external thread, and both ends of the adjusting member 421 are provided with internal threads that are adapted to it. The threaded end of the connecting member extends into the cavity of the adjusting member 421. By rotating the adjusting member 421, the length of the two connecting members extending into the adjusting member 421 can be adjusted, thereby adjusting the overall length of the first support rod 42.
[0037] Furthermore, the second support rod 41 includes several detachably connected support sections, with adjacent support sections connected by bolts; this arrangement further increases the adjustment range of the distance between the support part 412 of the second support rod 41 and the fixing member 2, so that the lifting tool can be applied to pipe sections 6 of different diameters.
[0038] This application also proposes a construction method using the above-mentioned precast concrete pipe section vertical hoisting tool, including the following steps:
[0039] S1. Move the sliding member 3 along the direction of the fixed member 2 toward the lifting ring 5, so that the support member 4 retracts inward;
[0040] S2. Place the vertical hoisting tool for the precast concrete pipe section 6 into the precast concrete pipe section 6;
[0041] Specifically, the vertical hoisting tool for the precast concrete pipe section 6 is placed at a set height inside the precast concrete pipe section 6 so that the operator can manually move the sliding part 3 above the pipe section 6.
[0042] S3. Control the sliding member 3 to move towards the bottom of the fixed member 2 so that the support part 412 abuts against the inner wall of the precast concrete pipe section 6. Adjust the length of the first support rod 42 so that the support part 412 abuts against the inner wall of the precast concrete pipe section 6.
[0043] Specifically, in this step, the extension of the first support rod 42 is adjusted;
[0044] S4. Connect the lifting ring 5 to the lifting equipment;
[0045] S5. After the hoisting operation is completed, adjust the length of the first support rod 42 to separate the support part 412 from the inner wall of the precast concrete pipe section 6, and remove the vertical hoisting tools of the precast concrete pipe section 6 as a whole.
[0046] The advantages and positive effects of this utility model are:
[0047] (1) By setting up a chassis, fixing parts, sliding parts, lifting rings and multiple supporting parts, the vertical hoisting of pipe sections is safer and the installation and dismantling are more convenient, saving hoisting time and effectively preventing damage to pipe sections.
[0048] (2) By designing a sliding component fitted onto a fixed component, the sliding component can move freely along the fixed component; the bottom end of the second support rod is hinged to the chassis, one end of the first support rod is hinged to the sliding component, and the other end is hinged to the connecting part; the first support rod and the second support rod are evenly arranged around the fixed component in the circumference, and the projection of the first support rod and the second support rod on the chassis extends radially along the fixed component, which improves the stability of the support component connection structure, not only making the circumferential force of the pipe section more balanced, but also improving the reliability and safety of the pipe section during the hoisting process.
[0049] (3) The sliding parts and support parts are designed to be applicable to precast concrete pipe sections of different diameters, enabling overall installation and dismantling, making it easier to reuse and reducing construction costs.
[0050] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.
Claims
1. A vertical hoisting tool for precast concrete pipe sections, characterized in that, include: The system comprises a chassis, a fixing component, a sliding component, a lifting ring, and multiple supporting components. The bottom end of the fixing component is connected to the chassis. The lifting ring is disposed at the top end of the fixing component. The sliding component is slidably connected to the fixing component and can reciprocate along the length direction of the fixing component. The supporting components include a first supporting rod and a second supporting rod. The bottom end of the second supporting rod is hinged to the chassis, and the top end is provided with a supporting part for abutting against the inner wall of the pipe section. A connecting part is provided between the bottom end and the top end of the second supporting rod. One end of the first supporting rod is hinged to the sliding component, and the other end is hinged to the connecting part.
2. The vertical hoisting tool for precast concrete pipe sections according to claim 1, characterized in that: The support members are evenly arranged around the fixing member in the circumferential direction.
3. The precast concrete pipe section vertical hoisting tool according to claim 2, characterized in that: The projections of the first support rod and the second support rod on the chassis extend radially along the fixing member.
4. The vertical hoisting tool for precast concrete pipe sections according to any one of claims 1-3, characterized in that: The sliding member is sleeved on the fixing member, and its inner diameter is larger than the outer diameter of the fixing member.
5. The vertical hoisting tool for precast concrete pipe sections according to claim 4, characterized in that: The outer wall of the sliding member is uniformly provided with a plurality of first hinge seats, the connecting part is provided with a second hinge seat, and the chassis is provided with a third hinge seat. The first hinge seat, the second hinge seat and the second hinge seat all include a pin, and the pin is arranged perpendicular to the radial direction of the fixing member.
6. The vertical hoisting tool for precast concrete pipe sections according to claim 5, characterized in that: The support includes an anti-slip support foot, and the anti-slip support foot includes an anti-slip surface facing away from the fixing member, and the anti-slip surface is provided with a flexible pad.
7. The vertical hoisting tool for precast concrete pipe sections according to claim 1, 2, 3 or 6, characterized in that: The first support rod is a telescopic rod with adjustable length.
8. The vertical hoisting tool for precast concrete pipe sections according to claim 7, characterized in that: The first support rod includes an adjusting member and connecting rods disposed at both ends of the adjusting member. The adjusting member is a cavity structure with openings at both ends, and the connecting rods are threadedly connected to the adjusting member.
9. The vertical hoisting tool for precast concrete pipe sections according to claim 8, characterized in that: The second support rod includes several detachably connected support sections, adjacent support sections being connected by bolts.