Hoisting auxiliary device for over-grouting pile head

Abstract

The utility model provides a hoisting auxiliary device for an over-grouting pile head, which structurally comprises a limiting ring, a guide seat and a hoisting rope, and the guide seat is arranged on the periphery of the limiting ring and is in sliding connection with the limiting ring; the lifting rope is movably arranged on the inner side of the limiting ring and used for binding a pile head. The guide seat and the limiting ring are connected through a guide groove and a guide block, the guide block is arranged in the guide groove, and the relative sliding direction of the guide seat and the guide block is the same as the axis direction of the limiting ring. The pile head can be limited in the lifting process of the pile head, so that the pile head is inclined after being lifted to a position higher than a steel bar, the lifting safety is ensured, the steel bar cannot be bent, and the quality of the steel bar is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place pile construction, in particular to a hoisting auxiliary device for an over-cast pile head. Background Art

[0002] During the construction of mud-walled bored piles, the concrete in the over-cast part of the pile top often contains impurities such as scum and loose soil, resulting in poor concrete quality at the pile head that does not meet the requirements. To ensure the quality of bored piles, it is usually necessary to use an air compressor to cut off the pile head, separate the pile head from the steel bar, and then use a crane to lift the pile head away. However, in the process of lifting the pile head, the lifting rope will tilt the pile head, and the tilt of the pile head will bend the steel bars around it. In subsequent construction, the steel bars need to be manually straightened, which is not only time-consuming and labor-intensive, but also affects the quality of the steel bars. Utility Model Content

[0003] The utility model aims to provide a lifting auxiliary device for an over-cast pile head to solve the above-mentioned problems.

[0004] The technical solution of the utility model includes: a lifting auxiliary device for an over-filled pile head, which includes: a limiting ring, a guide seat and a lifting rope, wherein the guide seat is arranged on the outer periphery of the limiting ring and is slidably connected to the limiting ring; the lifting rope is movably arranged on the inner side of the limiting ring to bind the pile head.

[0005] Preferably, the guide seat and the limiting ring are connected via a guide groove and a guide block, the guide block is arranged in the guide groove, and the relative sliding direction of the two is the same as the axial direction of the limiting ring.

[0006] Preferably, there are multiple groups of guide grooves and guide blocks evenly distributed along the circumference of the limiting ring.

[0007] Preferably, the inner wall of the guide seat is rotatably connected to a limiting rod, an elastic member is provided below the limiting rod, and the other end of the elastic member is connected to the guide seat.

[0008] Preferably, an outer wall of the limiting ring is provided with an electromagnet 1, and the limiting rod is provided with an electromagnet 2 having the same polarity as the electromagnet 1.

[0009] Preferably, the guide seat comprises a rigid tube and a plurality of elastic petals, and the plurality of elastic petals are arranged on the top of the rigid tube to enclose an elastic tube coaxial with the rigid tube.

[0010] Preferably, a plurality of thorn rods are provided on the bottom surface of the rigid tube, and the diameters of the thorn rods gradually decrease in a direction away from the rigid tube.

[0011] Preferably, a mounting block is connected to the bottom of the outer wall of the rigid tube, and an anchor bolt is passed through the mounting block.

[0012] Preferably, the limiting ring is an open ring, and connecting plates are provided on both sides of the opening thereof, and connecting locking pieces are passed through the connecting plates.

[0013] Preferably, a rope ring is provided on the inner side of the limiting ring, the lifting rope is passed through the rope ring, and the free end is connected to the lifting hook.

[0014] The beneficial effect of the utility model is that the pile head can be limited during the hoisting process, so that the pile head will not tilt until it is hoisted to a position higher than the steel bar, which not only ensures the safety of the hoisting, but also prevents the steel bar from bending, thereby ensuring the quality of the steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional view of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection between the rigid tube and the pile head in the embodiment of the utility model;

[0017] Figure 3 This utility model embodiment is attached Figure 2 A magnified view of the structure at center A;

[0018] Figure 4 It is a top view of an embodiment of the utility model;

[0019] Figure 5 It is a bottom view of the rigid cylinder in the embodiment of the utility model.

[0020] In the figure:

[0021] 1. Limiting ring; 2. Guide seat; 2-1. Rigid cylinder; 2-2. Elastic petal; 2-3. Guide groove; 2-4. Thorn rod; 2-5. Mounting block; 3. Lifting rope; 4. Pile head; 5. Rope ring; 6. Hook; 7. Rebar; 8. Anchor bolt; 9. Guide block; 10. Mounting plate; 11. U-shaped mounting seat; 12. Limiting rod; 13. Elastic part; 14. Electromagnet 1; 15. Electromagnet 2; 16. Connecting plate; 17. Connecting locking part. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] Reference Figure 1 The present embodiment provides a lifting auxiliary device for an over-cast pile head, which includes: a limiting ring 1, a guide seat 2 and a lifting rope 3, wherein the guide seat 2 is arranged on the outer periphery of the limiting ring 1 and is slidably connected to the limiting ring 1; the lifting rope 3 is movably arranged on the inner side of the limiting ring 1 to tie up the pile head 4; a rope ring 5 is arranged on the inner side of the limiting ring 1, the lifting rope 3 is passed through the rope ring 5, and the free end is connected to the hook 6. In the construction process of removing the over-cast pile head 4 of the bored pile, the pile head 4 is first cut off and separated from the steel bar 7, the guide seat 2 is placed on the outer side of the steel bar 7, the limiting ring 1 is placed between the steel bar 7 and the pile head 4, the lifting rope 3 installed in the limiting ring 1 is tied and fixed to the outside of the pile head 4, and then the pile head 4 can be lifted away by using a lifting device. The guiding and limiting function of the guide seat 2 prevents the limiting ring 1, the suspension rope 3 or the pile head 4 from tilting, thereby preventing the steel bars 7 on the outside of the pile head 4 from colliding and bending, thereby avoiding the straightening and resetting work of the steel bars 7 and avoiding the influence of repeated bending on the quality of the steel bars 7, thereby ensuring the quality of the building structure under subsequent construction.

[0027] Reference Figure 2 and 4The guide seat 2 includes a rigid tube 2-1 and a plurality of elastic petals 2-2. The rigid tube 2-1 is located below the elastic petals 2-2, and the top surface of the rigid tube 2-1 shall not be lower than the top surface of the steel bar 7, so as to achieve a stable guiding effect on the limit ring 1 and the pile head 4 without excessive displacement, thereby preventing the steel bar 7 from being hit or bent. The elastic petals 2-2 are located on the top of the rigid tube 2-1, and a plurality of elastic petals 2-2 enclose an elastic tube coaxial with the rigid tube 2-1. After the pile head 4 completely leaves the area enclosed by the steel bar 7, it is convenient for the construction personnel to adjust the lifting angle, direction, etc. as needed to achieve smooth removal of the pile head 4.

[0028] The shape of the elastic flap 2-2 can be configured according to the needs, but it is preferably an arc plate with the same arc as the rigid tube 2-1 to facilitate positioning, connection, installation, etc. The connection method between the elastic flap 2-2 and the rigid tube 2-1 can also be configured according to the needs, such as bolt connection, etc., which is not specifically limited here.

[0029] To improve the guiding stability, refer to the attached Figure 1 and 5 The bottom surface of the rigid tube 2-1 is provided with a plurality of thorn rods 2-4, and the diameter of the thorn rods 2-4 gradually decreases in the direction away from the rigid tube 2-1; the bottom of the outer wall of the rigid tube 2-1 is connected to a mounting block 2-5, and the mounting block 2-5 is penetrated with an anchor bolt 8. When installing this device, firstly position it according to the construction requirements, after determining the position of the rigid tube 2-1, put the rigid tube 2-1 on the outside of the cast-in-place pile, press the rigid tube 2-1 downward, make the thorn rods 2-4 penetrate into the soil below the construction surface, until the mounting block 2-5 abuts the construction surface, and use the anchor bolt 8 for secondary fixing to ensure that during the construction process, the axis of the rigid tube 2-1 is vertical and will not be horizontally displaced.

[0030] In order to provide stable guidance for the limiting ring 1, guide grooves 2-3 are provided on the rigid tube 2-1 and the elastic petal 2-2, and the guide grooves 2-3 on the two are continuous. The extension direction of the guide groove 2-3 is the same as the axis of the limiting ring 1. A guide block 9 with a shape matching the guide groove 2-3 is provided on the outside of the limiting ring 1. The guide block 9 is slidably arranged in the guide groove 2-3. Due to the directional configuration of the guide groove 2-3, the sliding direction of the guide block 9 is the same as the axis of the limiting ring 1, that is, the limiting ring 1 can slide up and down in the vertical direction, and the pile head 4 inside it will not be skewed and touch the steel bar 7.

[0031] In order to ensure the smoothness of sliding and the stability of guiding, the above-mentioned guide grooves 2-3 and guide blocks 9 are evenly distributed in multiple groups along the circumference of the limit ring 1, so that the force of the limit ring 1 is balanced and it will not be skewed during the movement.

[0032] Since the pile head 4 has a large mass and a large inertia, in order to further improve its stability during the lifting process and avoid hitting the steel bars 7, refer to the attached Figure 3In this embodiment, a mounting plate 10 is provided on the inner wall of the rigid tube 2-1, and a U-shaped mounting seat 11 is provided on the mounting plate 10. A rotatable limit rod 12 is provided in the U-shaped mounting seat 11, and the rotation axis of the limit rod 12 is horizontal. An elastic member 13 is provided at the bottom of the limit rod 12, and the other end of the elastic member 13 is fixedly connected to the U-shaped mounting seat 11, so that when not subjected to external force, the free end of the limit rod 12 is lower than its rotation axis and close to the rigid tube 2-1. Before lifting the pile head 4, the limit rod 12 is rotated upward until its free end is higher than its own rotation axis, and then the rigid tube 2-1 is integrally sleeved on the outside of the pile head 4. Under the pulling force of the elastic member 13, the limit rod 12 is rotated downward and pressed against the outer wall of the pile head 4, thereby limiting the pile head 4 and preventing it from tilting.

[0033] Of course, the pulling force of the elastic member 13 is limited, and an electromagnet 14 can be further arranged on the outer wall of the limiting ring 1, and an electromagnet 2 15 with the same polarity as the electromagnet 14 can be embedded on the limiting rod 12. When it is necessary to increase the limiting force on the pile head 4, the voltage of the electromagnet 14 and the electromagnet 2 15 can be adjusted to increase the repulsive effect between the two, so that the free end of the limiting rod 12 is pressed down against the pile head 4, thereby achieving the purpose of stability and reinforcement.

[0034] Similarly, the limiting rod 12, the elastic member 13, the electromagnet 14 and the electromagnet 2 15 etc. can also be evenly distributed in multiple groups along the circumference of the limiting ring 1, so that the force of the limiting ring 1 is balanced and it will not be skewed during the movement.

[0035] To facilitate fixation, the limit ring 1 in this embodiment is configured as an open ring, and connecting plates 16 are provided on both sides of its opening. A connecting locking piece 17 is passed through the connecting plate 16. By installing and removing the connecting locking piece 17, the opening and closing of the limit ring 1 can be adjusted.

[0036] The working principle of this device is as follows: the lifting direction of the pile head 4 is limited by the limit ring 1 and the guide seat 2 respectively located inside and outside the steel bar 7. When the pile head 4 is located in the rigid tube 2-1, the guide block 9 can only slide up and down in the guide groove 2-3, and the pile head 4 will not be skewed or horizontally displaced. The limit rod 12 will also provide auxiliary limiting effect on the pile head 4. When the pile head 4 is separated from the rigid tube 2-1, due to the elasticity of the elastic petal 2-2, the worker can operate the lifting equipment to arbitrarily change the lifting direction and angle of the pile head 4. At this time, the elastic petal 2-2 can enclose the pile head 4 to improve the construction safety when adjusting the lifting direction and angle. After the pile head 4 is lifted away, the elastic petal 2-2 can be automatically reset, and its structure is not damaged and can be recycled.

[0037] Compared with the prior art, the beneficial effect of the utility model is that the pile head 4 can be limited during the lifting process, so that the pile head 4 will not tilt until it is lifted to a position higher than the steel bar 7, which not only ensures the safety of the lifting, but also prevents the steel bar 7 from bending, thereby ensuring the quality of the steel bar 7.

[0038] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A lifting auxiliary device for an over-filled pile head, characterized in that: include: A limiting ring, a guide seat and a suspension rope, wherein the guide seat is arranged on the outer periphery of the limiting ring and is slidably connected with the limiting ring; The suspension rope is movably arranged on the inner side of the limiting ring and is used for binding the pile head.

2. The lifting auxiliary device for the super-filled pile head according to claim 1 is characterized in that: The guide seat and the limiting ring are connected via a guide groove and a guide block, the guide block is arranged in the guide groove, and the relative sliding direction of the two is the same as the axial direction of the limiting ring.

3. The lifting auxiliary device for the super-filled pile head according to claim 2 is characterized in that: The guide grooves and the guide blocks are evenly distributed in a plurality of groups along the circumference of the limiting ring.

4. The lifting auxiliary device for the super-cast pile head according to any one of claims 1 to 3, characterized in that: The inner wall of the guide seat is rotatably connected to a limiting rod, an elastic member is arranged below the limiting rod, and the other end of the elastic member is connected to the guide seat.

5. The lifting auxiliary device for the super-filled pile head according to claim 4, characterized in that: An electromagnet 1 is arranged on the outer wall of the limiting ring, and an electromagnet 2 having the same polarity as the electromagnet 1 is arranged on the limiting rod.

6. The lifting auxiliary device for the super-filled pile head according to any one of claims 1 to 3, characterized in that: The guide seat comprises a rigid tube and a plurality of elastic petals, wherein the plurality of elastic petals are arranged on the top of the rigid tube to enclose an elastic tube coaxial with the rigid tube.

7. The lifting auxiliary device for the super-filled pile head according to claim 6, characterized in that: The bottom surface of the rigid tube is provided with a plurality of thorn rods, and the diameters of the thorn rods gradually decrease in the direction away from the rigid tube.

8. The lifting auxiliary device for the super-filled pile head according to claim 6, characterized in that: The bottom of the outer wall of the rigid tube is connected with a mounting block, and an anchor bolt is passed through the mounting block.

9. The lifting auxiliary device for the super-filled pile head according to claim 5, characterized in that: The guide seat comprises a rigid tube and a plurality of elastic petals, wherein the plurality of elastic petals are arranged on the top of the rigid tube to enclose an elastic tube coaxial with the rigid tube.

10. The lifting auxiliary device for the super-filled pile head according to claim 9, characterized in that: The bottom surface of the rigid tube is provided with a plurality of thorn rods, and the diameters of the thorn rods gradually decrease in the direction away from the rigid tube.

11. The lifting auxiliary device for the super-filled pile head according to claim 9, characterized in that: The bottom of the outer wall of the rigid tube is connected with a mounting block, and an anchor bolt is passed through the mounting block.

12. The lifting auxiliary device for the super-filled pile head according to claim 1, characterized in that: The limiting ring is an open ring, and connecting plates are arranged on both sides of its opening, and connecting locking pieces are passed through the connecting plates.

13. The lifting auxiliary device for the super-cast pile head according to claim 1, characterized in that: A rope ring is arranged on the inner side of the limiting ring, the lifting rope is passed through the rope ring, and the free end is connected to the lifting hook.

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