Precast concrete pile lifting hook
By setting up embedded lifting rings and hooks on precast concrete piles, the problems of exposed and insufficient number of lifting rings are solved, and the efficient use of multi-point lifting and wire ropes are achieved, which extends the service life and reduces construction costs.
Patent Information
- Application Number
- CN202421061537.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The lifting rings of existing precast concrete piles are exposed and insufficient in quantity, resulting in severe extrusion collisions and wear. The traditional lifting rings cannot meet the needs of multi-point lifting, resulting in frequent replacement and waste of wire ropes.
Designed precast concrete pile hooks, which are set in the V-shaped groove on four circumferential surfaces, the extension of the ring is pre-buried, and the hook is lower than the upper edge of the groove, used to cover the wire rope and form it by snapping. Free-retracting ring, two-point or one-point lifting.
It avoids collision damage of lifting rings and hooks during stacking and pile driving, adapts to different lifting needs, extends the service life of the wire rope, and reduces waste and construction costs.
Smart Images
Figure CN222348486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a prefabricated concrete pile hook. Background Art
[0002] Existing precast concrete piles generally use lifting rings, which are exposed and set on one surface with a total of only two for two-point lifting and unloading between the car and the site. Depending on the situation on the construction site, the exposed lifting rings may cause squeezing and collision when the piles are stacked, and the pile driver may press the lifting rings and cause them to be damaged during piling.
[0003] In addition, the conventional lifting rings do not take into account the need for one-point lifting and three-point lifting of the pile from the stockpile site to the pile driver during piling, resulting in the dilemma that the conventional lifting rings are useless when one-point lifting is required.
[0004] In addition, single-point lifting is basically adopted when hoisting square piles on site. The wire rope is in direct contact with the square piles, and the four corners of the square piles are particularly severely worn. Once the wire breakage rate exceeds the standard, it cannot be used for safety reasons. It needs to be replaced approximately every 10 hours of use, resulting in the purchase, weaving, use and discard of a large amount of wire ropes, which is time-consuming and labor-intensive. Utility Model Content
[0005] The utility model aims to provide a precast concrete pile hook.
[0006] In order to solve the above problems, the utility model provides a precast concrete pile hook, comprising:
[0007] A lifting ring is correspondingly arranged in each groove, the extension section of the lifting ring is embedded in the precast concrete pile, a lifting hook is fixedly connected to the lifting ring, the height of the lifting ring and the lifting hook is lower than the height of the upper edge of the groove; the lifting hook is used for sleeved steel wire rope.
[0008] Furthermore, in the above-mentioned precast concrete pile hook, the cross-section of the groove is V-shaped.
[0009] Furthermore, in the above-mentioned precast concrete pile hook, the grooves are arranged on four circumferential surfaces of the precast concrete pile.
[0010] Furthermore, in the above-mentioned precast concrete pile hook, the hooks on each circumferential surface of the precast concrete pile are at the same circumferential horizontal height of the precast concrete pile.
[0011] Furthermore, in the above-mentioned precast concrete pile hook, the hook is uniformly set at 1 / 3 of the longitudinal height of the precast concrete pile or uniformly set at 2 / 3 of the longitudinal height.
[0012] Furthermore, in the above-mentioned precast concrete pile hook, the hook is V-shaped, and the two wings of the V-shape are arc-shaped, the concave surface of the arc faces the groove, and the two wings of the V-shape are used for sleeved steel wire ropes.
[0013] Furthermore, in the above-mentioned precast concrete pile hook, a buckle is provided at one end of the steel wire rope, and the steel wire rope passes through the buckle to form a freely retractable loop.
[0014] Furthermore, in the above-mentioned precast concrete pile hook, the freely retractable loop of the steel wire rope is arranged on two hooks that are symmetrical on both sides to achieve two-point lifting.
[0015] Furthermore, in the above-mentioned precast concrete pile hook, when the precast concrete pile is placed vertically, the freely retractable loop of the steel wire rope is arranged on the lower flank of the hook on one side of the precast concrete pile to achieve one-point lifting.
[0016] Compared with the prior art, the utility model includes: grooves arranged on each circumferential surface of the precast concrete pile; a lifting ring is correspondingly arranged in each groove, the extension section of the lifting ring is pre-buried in the precast concrete square pile, a lifting hook is fixedly connected to the lifting ring, the height of the lifting ring and the lifting hook is lower than the height of the upper edge of the groove, so as to achieve that the lifting ring and the lifting hook are not higher than the pile surface of the precast concrete square pile or the pile surface of the pipe pile, which can avoid the impact of the upper and lower collisions on the pile stacking, avoid the collision when the precast concrete square pile is stacked, and avoid the lifting ring and the lifting hook protruding from the precast concrete square pile when the pile is pressed, causing the pile driver to crush the lifting ring and the lifting hook; the lifting hook is used to set the wire rope. The lifting hook can be placed at each point of the precast concrete square pile according to the design requirements, and it can be lifted at one point, two points or three points, which is suitable for pipe piles and square piles, and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a distribution diagram of a semi-exposed hook of an embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of a semi-exposed hook according to an embodiment of the utility model;
[0019] Figure 3 It is a schematic diagram of winding a wire rope for one-point lifting of a semi-exposed hook according to an embodiment of the utility model;
[0020] Figure 4 It is a schematic diagram of a two-point lifting of a semi-exposed hook according to an embodiment of the utility model;
[0021] Figure 5 It is a schematic diagram of one-point lifting of a semi-exposed hook according to an embodiment of the utility model. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0023] like Figure 1 and 2 As shown, the utility model provides a precast concrete pile hook, comprising:
[0024] Grooves 2 are provided on each surface of the precast concrete pile 1 in the circumferential direction;
[0025] A lifting ring 3 is correspondingly arranged in each groove 2, and the extended section of the lifting ring 3 is pre-buried in the precast concrete pile 1. A hook 4 is fixedly connected to the lifting ring 3. The height of the lifting ring and the hook is lower than the height of the upper edge of the groove, so that the lifting ring and the hook do not exceed the pile surface of the precast concrete square pile or the pipe pile surface, which can avoid the impact of upper and lower collisions on the stacking of piles and avoid collisions during the stacking of precast concrete square piles. When the pile is pressed, the lifting ring and the hook protrude from the precast concrete square pile, causing the pile driver to crush the lifting ring and the hook; the hook 4 is used for sleeved with a steel wire rope 5.
[0026] Here, hooks can be placed at various points of the precast concrete square piles according to the design requirements. One-point, two-point or three-point lifting is possible. It is suitable for pipe piles and square piles, and the construction is convenient.
[0027] like Figure 2 As shown, in one embodiment of the precast concrete pile hook of the utility model, the cross section of the groove 2 is V-shaped.
[0028] Here, the concrete within a radius of 100mm around the hook can be sloped to facilitate the insertion of the wire rope.
[0029] In one embodiment of the precast concrete pile hook of the utility model, the hooks 4 on each circumferential surface of the precast concrete pile 1 are at the same circumferential horizontal height of the precast concrete pile 1 .
[0030] In one embodiment of the precast concrete pile hook of the utility model, the hook 4 is uniformly arranged at 1 / 3 of the longitudinal height of the precast concrete pile or uniformly arranged at 2 / 3 of the longitudinal height.
[0031] like Figure 2 , 4 As shown in FIG. 5 , in one embodiment of the precast concrete pile hook of the utility model, the hook 4 is V-shaped, the two wings of the V-shaped are arc-shaped, the concave surface of the arc faces the groove 2, and the two wings of the V-shaped are used to sleeve the wire rope 4.
[0032] Here, the arc-shaped concave surface facing the groove can prevent the wire rope from coming off the hook when hoisting the precast concrete pile. The arc-shaped V-shaped hook can increase the utilization rate of the wire rope, ensure the safety of personnel, greatly increase the efficiency of on-site hoisting, reduce the use and waste of wire rope, reduce the project cost, and speed up the construction period.
[0033] In one embodiment of the precast concrete pile hook of the utility model, the grooves 2 are arranged on four circumferential surfaces of the precast concrete pile.
[0034] Here, the semi-exposed hook of the utility model can be arranged on all four sides of the pile body.
[0035] like Figure 3 As shown, in one embodiment of the precast concrete pile hook of the utility model, a buckle is provided at one end of the steel wire rope 4, and the steel wire rope passes through the buckle to form a freely retractable loop.
[0036] like Figure 4 As shown, in one embodiment of the precast concrete pile hook of the utility model, the freely retractable loop of the steel wire rope is arranged on two hooks that are symmetrical on the left and right to realize two-point lifting.
[0037] Here, the freely retractable loop of the wire rope mounted on the hook is tightened on the hook by friction and deadweight, thereby achieving the lifting of the precast concrete pile hook.
[0038] like Figure 5 As shown, in one embodiment of the precast concrete pile hook of the utility model, when the precast concrete pile is placed vertically, the freely retractable loop of the wire rope is arranged on the lower flank of the hook on one side of the precast concrete pile to achieve one-point lifting.
[0039] Specifically, when one point is lifted, the following process is included:
[0040] 1. First, the wire rope Figure 3 The method is to pass it through the buckle at one end to form a freely retractable loop.
[0041] 2. If Figure 5 As shown, the wire rope loop is buckled on the lower side wing of the V-shaped semi-exposed hook on each surface of the precast concrete pile, and the hoisting can be carried out by buckling it.
[0042] 3. When the pile is hoisted onto the pile driver, the crane's boom swings downward, and the wire rope loop can easily break free from the V-shaped semi-exposed hook;
[0043] 4. At this time, the wire rope that has escaped the hook is still on the pile, but after swinging, the wire rope loop has expanded a lot. The hoisting personnel control the crane boom to lift the wire rope loop through the top of the pile and continue to hoist the next pile.
[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0045] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.
Claims
1. A precast concrete pile hook, characterized in that: include: A lifting ring is correspondingly arranged in each groove, the extension section of the lifting ring is embedded in the precast concrete pile, a lifting hook is fixedly connected to the lifting ring, the height of the lifting ring and the lifting hook is lower than the height of the upper edge of the groove; the lifting hook is used for sleeved steel wire rope.
2. The precast concrete pile hook according to claim 1, characterized in that: The cross section of the groove is V-shaped.
3. The precast concrete pile hook according to claim 1, characterized in that: The grooves are arranged on four circumferential surfaces of the precast concrete pile.
4. The precast concrete pile hook according to claim 1, characterized in that: The hooks on each circumferential surface of the precast concrete pile are at the same circumferential horizontal height of the precast concrete pile.
5. The precast concrete pile hook according to claim 3, characterized in that: The hooks are uniformly arranged at 1 / 3 of the longitudinal height of the precast concrete pile or uniformly arranged at 2 / 3 of the longitudinal height.
6. The precast concrete pile hook according to claim 1, characterized in that: The hook is V-shaped, and the two wings of the V are arc-shaped. The concave surface of the arc faces the groove, and the two wings of the V are used for sleeved steel wire ropes.
7. The precast concrete pile hook according to claim 6, characterized in that: One end of the steel wire rope is provided with a buckle, and the steel wire rope passes through the buckle to form a freely retractable loop.
8. The precast concrete pile hook according to claim 7, characterized in that: The freely retractable loop of the steel wire rope is arranged on two hooks which are symmetrical on both sides.
9. The precast concrete pile hook according to claim 7, characterized in that: When the precast concrete pile is placed vertically, the freely retractable loop of the steel wire rope is arranged on the lower flank of the hook on one side of the precast concrete pile.