CN210712841U

CN210712841U - Abandonment stake pulling apparatus

Info

Publication number: CN210712841U
Application number: CN201921413513.XU
Authority: CN
Inventors: 林威
Original assignee: Tianjin Jianyan Rock And Soil Engineering Co ltd
Current assignee: Tianjin Jianyan Rock And Soil Engineering Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-09
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to the technical field of a waste pile pulling device, in particular to a waste pile pulling device, which comprises a bracket, a chain, a hollow jack and a locking mechanism; the support is fixed on the ground, the hollow jack is fixed on the top platform of the support, the upper end of the chain is connected with the movable end of the hollow jack, and the lower end of the chain is connected with the locking mechanism. This device is whole to reduce very much for the large-scale pile pulling equipment volume among the prior art, and the cost is with very low costs, utilizes hollow jack and chain to extract abandonment stake, because the chain extends to the bottom of abandonment stake always, therefore the condition of splitting can not take place, through practical application, and efficiency is very high, reaches the leading level at home and abroad.

Description

Abandonment stake pulling apparatus

Technical Field

The utility model relates to an abandonment stake extraction element technical field especially relates to an abandonment stake extraction element.

Background

Generally, in the full-circle-rotation pile pulling method, the obstacle clearing machine or the water-jet method pile pulling method is used for pulling out the waste piles only by removing surrounding soil, both the two construction processes need large-scale special equipment for entering the field, the entering and exiting cost of the single special equipment is very high, the construction cost is high, and particularly when only a few waste pile foundations need to be pulled out, the entering and exiting cost of the equipment is often far higher than the actual construction cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned technique, and provide an abandonment stake pulling apparatus.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

the utility model provides an abandonment stake pulling apparatus which characterized in that: comprises a bracket, a chain, a hollow jack and a locking mechanism; the support is fixed on the ground, the hollow jack is fixed on the top platform of the support, the upper end of the chain is connected with the movable end of the hollow jack, and the lower end of the chain is connected with the locking mechanism.

Preferably, the middle part of support is equipped with positioning platform, the through-hole on the positioning platform is passed to the chain, is equipped with the activity round pin on the positioning platform, and the activity round pin inserts space on the chain is fixed a position the chain.

Preferably, the locking mechanism comprises a locking pin, and the middle part of the locking pin is hinged with the lower end of the chain.

Preferably, the locking mechanism comprises a cone and a plurality of expanding pieces, saw teeth are arranged around the expanding pieces, the expanding pieces surround a cylinder, the inner sides of the expanding pieces form a cone, the expanding pieces are connected with each other through ropes, the cone is matched with the inner sides of the expanding pieces, and the upper part of the cone is connected with the lower end of the chain.

Preferably, the bottom of the bracket is triangular.

Compared with the prior art, this device wholly reduces very much for the large-scale equipment volume of pulling out among the prior art, and the cost is very low, utilizes hollow jack and chain to extract abandonment stake, because the chain extends to the bottom of abandonment stake always, therefore can not the breaking condition, through practical application, efficiency is very high, reaches the leading level at home and abroad.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a perspective view of the present invention in another direction;

FIG. 3 is a diagram illustrating the operation of the present invention;

FIG. 4 is a side view of a second locking mechanism of the present invention;

fig. 5 is a top view of fig. 4.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings. As shown in fig. 1, the abandoned pile pulling device comprises a support 1, a chain 2, a hollow jack 3 and a locking mechanism; the support is fixed on the ground, the hollow jack is fixed on the top platform of the support, the upper end of the chain is connected with the movable end of the hollow jack, and the lower end of the chain is connected with the locking mechanism.

Because the hollow jack has walked a stroke after, need return, carry out pulling work of next stroke, return next time in-process, need fix a position the chain to in the abandonment stake that prevents to extract returns the hole again, for this reason, originally the middle part of support is equipped with positioning platform 4, the chain passes through the through-hole on the positioning platform, is equipped with the removable pin on the positioning platform, the removable pin inserts space on the chain is fixed a position the chain. A cable is shown, provided that the cable has a clearance into which the movable pin can be inserted.

As shown in fig. 2, the locking mechanism of the present device has two structures for locking the lower end of the chain to the waste pile, the first structure being designed for the cylindrical waste pile, and specifically, the locking mechanism includes a locking pin 5, the middle of which is hinged to the lower end of the chain. The fitting pin is exactly a ordinary pin, the diameter of fitting pin will be greater than the diameter of round hole, the fitting pin slope is placed in the round hole, fitting pin and chain move down along the round hole on the abandonment stake, in order to make the fitting pin can smooth move down, can press a depression bar in the upper end of fitting pin, make the fitting pin smooth open to the bottom of abandonment stake after, will be blocked in the bottom of abandonment stake, play the purpose of fixed abandonment stake.

As shown in fig. 4 and 5, another locking mechanism is locked at any position of the abandoned pile, and comprises a cone 6 and a plurality of expanding pieces 7, wherein the periphery of the expanding pieces is provided with saw teeth 8, the expanding pieces surround a cylinder, the inner sides of the expanding pieces form a cone, the expanding pieces are connected with each other by a rope, the cone is matched with the inner sides of the expanding pieces, and the upper part of the cone is connected with the lower end of the chain. During the use, put into the round hole earlier the cone and move down along the round hole in, it puts into the round hole to recycle several expansion pieces of hawser traction, when arriving abandonment stake bottom or being close to the bottom immediately, the pulling cone, the cone makes progress, because the cone expands the piece outwards with the wedge structure of expansion piece inside, then, divide into two kinds of situations, one kind is if the expansion piece is located the bottommost of abandonment stake, the expansion piece will be opened to the biggest, owing to by the rope restriction, so can not scatter, the diameter of expanding is greater than the diameter of round hole, and simultaneously, the cone can not come out from the expansion piece, thereby utilize chain pulling cone, the cone acts on the expansion piece, the expansion piece acts on the bottom of abandonment stake, pull out abandonment stake together. Another kind of condition is, the expansion piece falls to abandonment stake and is close to the bottom and not come out from the round hole yet, and the expansion piece will utilize sawtooth card on every side on the inner wall of round hole on the abandonment stake like this, and the cone is more upwards, and the inseparabler that expands the piece card, pulling chain, chain pulling cone, cone pulling expansion piece, expansion piece pulling abandonment stake are extracted the abandonment stake.

In order to improve the stability of the bracket, the bottom of the bracket is triangular.

As shown in fig. 3, a method for pulling up a waste pile includes the following steps: step one, determining the accurate position of a waste pile;

secondly, fixing a support right above the waste pile;

and step three, drilling at least one round hole 10 on the waste pile 9 by using a drilling machine, wherein the round hole extends to the bottom of the waste pile, and the number of the round holes is mainly rotated according to the diameter of the waste pile, so that more round holes are drilled when the diameter of the waste pile is large, and only one round hole is drilled when the diameter of the waste pile is small.

The method also comprises the steps of reaming the bottommost part of the abandoned pile by using the reaming device and injecting mud. The hole expanding device is a hole expanding machine which is commonly used by the company, a rubber rod is arranged at the bottom of the drill rod, hole expansion is carried out through high-speed rotation, and soil at the bottommost part of the waste pile is loosened so as to be conveniently placed into the locking mechanism.

Step four, a chain with a locking mechanism is put into the bottom of the waste pile from the upper part of the round hole;

and step five, after the locking mechanism locks the bottom of the waste pile, the upper part of the chain is connected with the hollow jack.

And step six, starting the hollow jack, and driving the chain to move upwards by the hollow jack so as to pull out the waste pile. Every time the hollow jack moves one stroke upwards, the positioning pin on the positioning platform is inserted into the chain, the hollow jack withdraws the stroke for next time, the chain and the waste pile are clamped on the positioning platform by the positioning pin, the part of the waste pile extending out of the ground is broken and removed by the breaking hammer, after removal, the hollow jack is pulled up again for next time, and the operation is repeated in sequence until all the waste piles are leaked out of the ground and removed.

And between the first step and the second step or between the second step and the third step, the periphery of the waste pile is cleaned, the periphery of the waste pile is drilled through a drilling machine, and then slurry is injected into the hole, so that soil around the waste pile is loosened, and the side friction resistance of the waste pile is reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an abandonment stake pulling apparatus which characterized in that: comprises a bracket, a chain, a hollow jack and a locking mechanism; the support is fixed on the ground, the hollow jack is fixed on the top platform of the support, the upper end of the chain is connected with the movable end of the hollow jack, and the lower end of the chain is connected with the locking mechanism.

2. The abandoned pile pulling apparatus according to claim 1, wherein: the middle part of support is equipped with positioning platform, the through-hole on the positioning platform is passed to the chain, is equipped with the activity round pin on the positioning platform, and the activity round pin inserts space on the chain is fixed a position the chain.

3. The abandoned pile pulling apparatus according to claim 1, wherein: the locking mechanism comprises a locking pin, and the middle part of the locking pin is hinged with the lower end of the chain.

4. The abandoned pile pulling apparatus according to claim 1, wherein: locking mechanism includes cone and a plurality of lamella expansion piece, have the sawtooth around the expansion piece, the expansion piece encloses a columniform of city, and the inside of expansion piece forms a cone, and the expansion piece is connected with the rope each other, the inboard cooperation of cone and expansion piece, the upper portion of cone with the lower extreme of chain is connected.

5. The abandoned pile pulling apparatus according to claim 1, wherein: the bottom of the bracket is triangular.