CN107117529B - A kind of safety jaw stake device and pile hanging method - Google Patents

Abstract

The invention discloses a safe pile-hanging device, which comprises a sliding cylinder device fitted on the outer periphery of a prefabricated pile body and a limit device fixed on an end plate. The sliding cylinder device includes sliding cylinders which are symmetrically arranged on the sliding cylinders respectively. A pair of main lifting lugs, a pair of auxiliary lifting rings, and rollers arranged radially on the sliding cylinder, the rollers are rollingly matched with the outer wall of the prefabricated pile body; the limit device includes at least three Fixed stress ribs, the inner edge of the stress ribs extends above the sliding cylinder, the stress ribs are provided with anti-collision holes, anti-collision bolts are arranged in the anti-collision holes, and the lower ends of the anti-collision bolts lower than the upper edge of the end plate. The utility model has the advantages of simple structure and convenient use. Using the pile hanging device to hang piles can avoid high-altitude operations, reduce operation intensity, eliminate potential safety hazards, and improve overall work efficiency.

Description

A kind of safety pile hanging device and pile hanging method

technical field

The invention relates to the technical field of prefabricated pile construction, in particular to a safe pile-hanging device and a pile-hanging method.

Background technique

During the construction of prefabricated concrete pipe piles, it is necessary to connect the prefabricated piles one by one, and weld and fix the joints to form a whole pile. During the construction process, it is necessary to bind and fix the prefabricated piles with steel wire ropes, and then use a crane to complete a series of actions such as lifting piles, aligning piles, and connecting piles.

At present, the method of hanging piles on the construction site of precast concrete pipe piles is generally to bind the piles with steel wire ropes. This method of hanging piles has the following problems: the diameter of the steel wire ropes is relatively thick, and the quality is relatively large. Generally, it requires the cooperation of multiple people to complete the construction operation. Bundling The wire rope has a large loss and high cost, and the pile body is easy to slide during the lifting process, which poses a great safety hazard.

In addition, during the pile binding process of the steel wire rope, the two rope heads are difficult to be symmetrical, and the force is eccentrically applied, which causes the hoisted pipe pile to tilt, which increases the difficulty of the pile and pile connection in the next step; During the cooling process, there is a long-term occupation of the crane. If the crane is to be unhooked and used, manual unhooking and hooking at high altitude are required, which results in high labor intensity, low work efficiency, and major safety risks; after the construction is completed, the heavy wire rope needs to be disassembled , increased labor intensity.

Contents of the invention

The technical problem to be solved by the present invention is to provide a safe pile-hanging device and a pile-hanging method aiming at the status quo of the prior art. work efficiency.

The technical solution adopted by the present invention to solve the problems of the technologies described above is:

A safety pile-hanging device, comprising a sliding tube device fitted on the outer periphery of a prefabricated pile body and a limit device fixed on an end plate, the sliding tube device includes a sliding tube, and a pair of main shafts symmetrically arranged on the sliding tube respectively. Lifting lugs, a pair of auxiliary lifting rings and rollers arranged radially on the sliding cylinder, the rollers roll and fit with the outer wall of the prefabricated pile body; the limit device includes at least three force Rib plate, the inner edge of the stressed rib plate extends above the sliding cylinder, the stressed rib plate is provided with anti-collision row holes, anti-collision bolts are arranged in the anti-collision row holes, and the lower end of the anti-collision bolt is lower than the described top edge of the end plate.

In order to optimize the above technical solutions, the specific measures taken also include:

Transverse rib rings are arranged at intervals on the outer periphery of the above-mentioned sliding cylinder.

The above-mentioned sliding cylinder is provided with vertical ribs along the radial direction.

The above-mentioned straight line where the main lifting lug is located is perpendicular to the straight line where the auxiliary lifting ring is located.

The cross-section of the above-mentioned stressed ribs is in the shape of "II".

The above-mentioned stressed ribs are fixed to the tension holes of the end plates through high-strength bolts.

Reinforcing ribs are respectively provided on both sides of the fixing holes of the above-mentioned stress ribs.

The number of the above-mentioned stressed ribs is three, and the three stressed ribs are evenly distributed on the circumferential surface.

A hoisting method for a safe hanging pile device, comprising the following steps:

Step 1. Installation of the slider device: Use the hook of the crane to lift the slider with the auxiliary ring, and put the slider into the prefabricated pile body. After the installation of the slider device is completed, loosen the hook on the auxiliary ring;

Step 2. Installation of the limit device: fix the stressed rib plate on the tension hole of the end plate, and install anti-collision bolts on the anti-collision row holes;

Step 3: Hanging piles and connecting piles: hang the crane hook on a pair of main lifting lugs of the sliding cylinder to carry out pile hanging, and after the prefabricated piles are hoisted to the designated position, the piles can be connected;

Step 4. Uncoupling of the upright piles: The previous section of piles and the next section of piles are fixed by electric welding at four corners, and then the hook of the crane is slowly lowered. The sliding cylinder device will slide down under the action of its own weight. The upper end of the pile slides down to the working platform, and the prefabricated pile is clamped by the pile clamping device, and the worker completes the unhooking and pile welding on the working platform;

Step 5. Secondary hook hanging pile: After the pile welding is completed, mobilize the crane to bring the main arm close to the upright prefabricated pile, and the hook close to the slider on the prefabricated pile. Manually complete the hook on the working platform, and place the slider device along the The prefabricated pile rises until it reaches the limit device, loosen the clamping device, and plant the pile. When the prefabricated pile sinks to the predetermined height, the clamping device clamps and fixes the prefabricated pile. After removing the limiting device, use a crane to install the pile. The sliding cylinder is hung out from the upper end of the prefabricated pile.

The above-mentioned anti-collision bolt is installed in an installation hole closest to the inner wall of the prefabricated pile body in the anti-collision row of holes.

Compared with the prior art, the present invention is a safe pile-hanging device, which includes a sliding tube device and a limit device. The sliding tube device can slide up and down along the prefabricated pile body by using the radially arranged rollers inside the sliding tube, and the end plate The fixed limit device restricts the sliding cylinder device from the prefabricated pile during the pile lifting process. The pile lifting device is simple in structure, easy to use and safe; the prefabricated pile is lifted by the symmetrically arranged main lifting lugs, which can ensure that the pile body remains stable during the pile lifting process. Vertical, so that the work of pile planting and pile connection is easier to carry out.

The hoisting method of the safety pile hanging device first puts the sliding cylinder device on the prefabricated pile, fixes the limit device on the end plate, and uses the main lifting lug to hang the pile. During the pile hanging process, the prefabricated pile remains vertical and After the piles are in place, unhook and connect the piles on the working platform, and then plant the piles after hanging the piles with the second hook. It avoids high-altitude operations, reduces operation intensity, eliminates potential safety hazards, and improves overall work efficiency.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an enlarged view of part A in Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a schematic structural view of the stressed rib plate in Fig. 1;

Fig. 5 is a schematic cross-sectional structure diagram of the stressed rib in Fig. 1 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

The embodiment shown in Figure 1 to Figure 5,

Explanation of icon numbers: prefabricated pile body 1, end plate 2, tension hole 2a, sliding cylinder 31, main lifting lug 32, auxiliary lifting ring 33, roller 34, transverse rib ring 35, vertical rib 36, stress rib 41. Anti-collision row holes 41a, anti-collision bolts 42, high-strength bolts 43, and reinforcing ribs 44.

As shown in Figure 1 to Figure 5,

A safety pile-hanging device, comprising a sliding tube device fitted on the outer periphery of the prefabricated pile body 1 and a limit device fixed on the end plate 2, the sliding tube device includes sliding tubes 31, which are respectively symmetrically arranged on the sliding tubes 31 A pair of main lifting lugs 32, a pair of auxiliary lifting rings 33 and a roller 34 arranged radially on the sliding cylinder 31, the roller 34 is rollingly matched with the outer wall of the prefabricated pile body 1; The tension rib 41 fixed to the tension hole 2a of the plate 2, the inner edge of the stress rib 41 extends into the top of the sliding tube 31, the stress rib 41 is provided with an anti-collision row hole 41a, and the anti-collision row An anti-collision bolt 42 is arranged in the hole 41 a, and the lower end of the anti-collision bolt 42 is lower than the upper edge of the end plate 2 .

In the embodiment, transverse rib rings 35 are arranged at intervals on the outer circumference of the sliding cylinder 31 .

In the embodiment, vertical ribs 36 are arranged on the sliding cylinder 31 along the radial direction.

The arrangement of the transverse rib ring 35 and the vertical rib plate 36 can increase the overall rigidity of the sliding cylinder 31, so that the sliding cylinder 31 can better bear force during the pile-hanging process.

In the embodiment, the straight line where the main lifting lug 32 is located is perpendicular to the straight line where the auxiliary lifting ring 33 is located.

The symmetrically arranged main lifting lugs 32 enable the prefabricated pile to maintain a vertical state during the pile hanging process; and the symmetrically arranged secondary lifting rings 33 can ensure the balance of the sliding tube device when two secondary lifting rings 33 are used to lift the sliding tube device.

In the embodiment, the cross section of the stressed rib 41 is in the shape of "II". With such a structure, the rigidity, bending resistance and shear strength of the stressed rib 41 can be improved, and at the same time, the self-weight of the device can be reduced.

In the embodiment, the stressed rib plate 41 is fixed to the tension hole 2 a of the end plate 2 through high-strength bolts 43 .

Anti-collision row holes 41a are set so that the limit device can be applied to prefabricated piles with different wall thicknesses; After the anti-collision bolt 42 is installed in a suitable hole (the anti-collision bolt 42 is located within the inner wall of the prefabricated pile), when the stressed rib 41 receives an impact, the anti-collision bolt 42 can limit the rotation of the stressed rib 41, thereby ensuring The inner edge of the stressed rib plate 41 extends into the top of the sliding tube 31, thereby ensuring that the sliding tube device will not break away from the prefabricated pile during the pile hanging process.

In the embodiment, reinforcing ribs 44 are respectively provided on both sides of the fixing hole of the stressed ribs 41 . The reinforcement ribs 44 are provided to further increase the strength of the stressed ribs 41 .

In the embodiment, the number of stressed ribs 41 is three, and the three stressed ribs 41 are evenly distributed on the circumferential surface.

4 rollers 34 on the sliding cylinder 31 are also evenly distributed on the circumferential surface.

A hoisting method for a safe hanging pile device, comprising the following steps:

Step 1. Installation of the sliding tube device: use the hook of the crane to lift the sliding tube 31 with the auxiliary lifting ring 33, and put the sliding tube 31 on the prefabricated pile body 1. After the sliding tube device is installed, loosen the auxiliary lifting ring 33 on the hook;

When the sliding cylinder device is installed, the use of the auxiliary lifting ring 33 is selected according to the placement state of the prefabricated pile to be hoisted: when the prefabricated pile is lying flat, only one auxiliary lifting ring 33 is hooked with a hook, and when the prefabricated pile is upright, two auxiliary lifting rings 33 are needed. The hooks hook the corresponding auxiliary rings 33 respectively, so that the worker can easily insert the sliding cylinder 31 into the prefabricated pile.

Step 2. Installation of the limit device: fix the stressed rib plate 41 on the tension hole 2a of the end plate 2, and install the anti-collision bolt 42 on the anti-collision row hole 41a; the anti-collision bolt 42 is installed on the anti-collision row In the installation hole closest to the inner wall of the prefabricated pile body 1 in the hole 41a;

The installation quantity of stressed ribs 41 is determined according to factors such as the diameter and self-weight of the prefabricated piles. During installation, the stressed ribs 41 are evenly arranged to ensure the uniformity of stress.

Step 3, hanging piles and connecting piles: hang the crane hook on a pair of main lifting lugs 32 of the sliding tube 31 to carry out pile hanging, after hanging the prefabricated piles to the designated position, the piles can be connected; since the main hanger The lugs 32 are arranged symmetrically. During the pile-hanging process, the main lifting lugs 32 on both sides are evenly stressed to ensure that the prefabricated piles are in a vertical state, which is conducive to the subsequent pile-connecting and pile-planting operations. Move to the upper end of the prefabricated pile along the pile body, and offset against the limit device.

Step 4. Unhook the upright pile: The previous section of pile and the next section of pile are fixed by electric welding at four corners, the crane is slightly swung to the side of the roller, the plumb line of the hook is placed outside the prefabricated pile, and then the hook of the crane is slowly lowered , the sliding cylinder device will slide down under the action of its own weight, slide the sliding cylinder device from the upper end of the prefabricated pile to the working platform, clamp the prefabricated pile with the pile clamping device, and the worker will complete the hook removal and pile welding on the working platform ; When the slider device moves, the rollers 34 roll and cooperate with the outer wall of the prefabricated pile, which not only reduces the wear of the device, but also prevents the slider 31 from tilting and getting stuck.

Step 5. Secondary hook hanging pile: After the pile welding is completed, mobilize the crane to bring the main arm close to the upright prefabricated pile, and the hook close to the sliding cylinder 31 on the prefabricated pile (at this time, the position of the hook should be consistent with that when decoupling), Manually complete the hook on the working platform, raise the sliding cylinder device along the prefabricated pile to resist the force of the limit device, loosen the pile clamping device, and start pile planting. Clamp and fix, use a portable jackhammer electric drill to remove the limit device, and use a crane to lift the installation slide from the upper end of the prefabricated pile.

In this way, the pile lifting operation is completed, and the dismantled sliding cylinder device and limit device are transferred to the material preparation area for the next pile lifting; in the above-mentioned whole process, high-altitude operations are avoided, operation intensity is reduced, potential safety hazards are eliminated, and comprehensive performance is improved. Work efficiency; equipment wear is also greatly reduced, which can effectively reduce construction costs.

The preferred embodiment of the present invention has been illustrated, and various changes or modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims (10)

1. A safe pile-hanging device, comprising a slide device fitted on the outer periphery of the prefabricated pile body (1) and a limit device fixed on the end plate (2), characterized in that: the slide device includes There is a sliding cylinder (31), a pair of main lifting lugs (32) and a pair of auxiliary lifting rings (33) symmetrically arranged on the sliding cylinder (31), and rollers (34) arranged radially on the sliding cylinder (31). , the rollers (34) are rollingly fitted with the outer wall of the prefabricated pile body (1); the limiting device includes at least three pieces that are fixed to the tension holes (2a) of the end plate (2) Stress ribs (41), the inner edges of the stress ribs (41) extend above the slider (31), and the stress ribs (41) are provided with anti-collision holes (41a ), the anti-collision bolt (42) is arranged in the anti-collision row hole (41a), and the lower end of the anti-collision bolt (42) is lower than the upper edge of the end plate (2). 2. A safety pile hanging device according to claim 1, characterized in that: the outer circumference of the sliding cylinder (31) is provided with transverse rib rings (35) at intervals. 3. A safety pile hanging device according to claim 2, characterized in that: vertical ribs (36) are arranged on the sliding cylinder (31) along the radial direction. 4. A safety pile hanging device according to claim 3, characterized in that: the straight line where the main lifting lug (32) is located is perpendicular to the straight line where the auxiliary lifting ring (33) is located. 5. A safety pile hanging device according to claim 4, characterized in that: the cross-section of the stressed rib (41) is in the shape of "II". 6. A safety pile hanging device according to claim 5, characterized in that: the stressed rib (41) passes through the tension hole (2a) of the end plate (2) through the high-strength bolt (43) ) is fixed. 7. A safety pile hanging device according to claim 6, characterized in that: reinforcing ribs (44) are respectively provided on both sides of the fixing hole of the stressed rib (41). 8. A safety pile hanging device according to claim 7, characterized in that: the number of the stressed ribs (41) is three, and the three stressed ribs (41) are evenly distributed on the circumferential surface superior. 9. The hoisting method of a safety pile hanging device according to claim 1, characterized in that: comprising the following steps: Step 1, installation of the sliding tube device: use the hook of the crane to lift the sliding tube (31) with the auxiliary ring (33), and insert the sliding tube (31) into the prefabricated pile body (1), and the sliding tube device Unclamp the suspension hook on the secondary lifting ring (33) after the installation is completed; Step 2. Installation of the limit device: fix the stressed rib plate (41) on the tension hole (2a) of the end plate (2), and install the anti-collision bolt (42) on the anti-collision row hole (41a) ; Step 3: Hanging piles and connecting piles: hang the crane hook on the pair of main lifting lugs (32) of the sliding cylinder (31) to carry out pile hanging, and after the prefabricated piles are hoisted to the designated position, the piles can be connected ; Step 4. Uncoupling of the upright piles: The previous section of piles and the next section of piles are fixed by electric welding at four corners, and then the hook of the crane is slowly lowered. The sliding cylinder device will slide down under the action of its own weight. The upper end of the pile slides down to the working platform, and the prefabricated pile is clamped by the pile clamping device, and the worker completes the unhooking and pile welding on the working platform; Step 5. Secondary hook hanging pile: After the pile welding is completed, mobilize the crane to bring the main arm close to the upright prefabricated pile, and the hook close to the sliding cylinder (31) on the prefabricated pile. Manually complete the hook on the working platform, and slide the The cylinder device rises along the prefabricated pile until it reaches the limit device, loosens the clamping device, and starts pile planting. When the prefabricated pile sinks to the predetermined height, the clamping device clamps and fixes the prefabricated pile. The machine lifts the installation slide from the upper end of the prefabricated pile. 10. The hoisting method of a safety pile hanging device according to claim 9, characterized in that: the anti-collision bolt (42) is installed in the anti-collision row hole (41a) closest to the prefabricated pile body (1 ) in a mounting hole in the inner wall.