CN203346884U - Anchor cable pressure boost device - Google Patents

Abstract

The utility model discloses an anchor cable pressure boost device, at least comprising a piston rod, a piston rod head, a cylinder head, a cylinder barrel, a pull arm, a pressure head, a plunger rod, a pump body and a counterforce frame, wherein the cylinder head is arranged at the opening of the cylinder barrel; the piston rod is arranged in the cylinder barrel; the outer end of the piston rod is connected with the piston rod head; the piston rod head is exposed out of the cylinder head and is arranged in the head inner slot of the counterforce frame; the outer end of the cylinder head is arranged in the head outer slot of the counterforce frame. According to the anchor cable boosting pushing device, the prestress lost due to the retraction of a steel strand is made up by the second pre-tightening of the pre-tightening pushing device, so the safety factor of an anchor cable support is greatly improved.

Description

Anchor cable supercharging top

Technical field

The utility model relates to a kind of anchor cable supercharging top, can be widely used in the anchor cable prestressing force secondary pretensions such as railway, highway, bridge, tunnel.

Background technology

After the prestressed anchor cable stretching, because stretch-draw jack returns cylinder while unloading anchor, the complete anchor cable of stretch-draw has the sub-fraction retraction, and prestressing force is laid down to a part, and safety factor is not high.

The utility model content

For the problems referred to above, the purpose of this utility model is to provide a kind of versatility, compatible good anchor cable supercharging to push up.

For achieving the above object, a kind of anchor cable supercharging described in the utility model top, at least comprise piston rod, piston rod head, cylinder head, cylinder bucket, torque arm, pressure head, plunger rod, the pump housing and reaction frame, wherein;

Described cylinder bung position is provided with cylinder head, and described piston rod is placed in described cylinder bucket, and the piston rod outer end is connected with piston rod head, and described piston rod head is exposed to outside cylinder head and is placed in the head inside groove of described reaction frame; The outer end of described cylinder head is placed in the head water jacket of described reaction frame;

Described cylinder bucket bottom is connected with the described pump housing by end-face hole, in the described pump housing, is provided with plunger rod; Perforation on described pressure head support end wears by location that pin is connected with an end of described torque arm with wire drawing, the perforation of described pump housing support end is worn pin by location and is connected with the other end of described torque arm with wire drawing; The pressure port of described pressure head is worn pin by slip and is connected described plunger rod with wire drawing;

Be provided with outlet valve on the described pump housing; Junction at the described pump housing and described cylinder bucket arranges pressure regulator valve separately;

An end at described pressure head is provided with depression bar;

Be provided with the first wedge plate of opening by the piston rod head thrust on described reaction frame, also be provided with and matching used the second wedge plate of the first wedge plate.

Preferably, also be provided with stop screw on described pressure head.

The beneficial effects of the utility model are:

1, by the secondary pretension pressed closer in advance, made up the prestressing force due to the loss of steel strand retraction, greatly improved the safety factor of cable bolting.

2, good mechanical properties.

3, workability is good, and abrasion resistance is good.

4, corrosion resistance, good in oxidation resistance.

The accompanying drawing explanation

Fig. 1 is the structural representation on the described anchor cable supercharging of the utility model embodiment top.

The specific embodiment

Below in conjunction with Figure of description, the utility model is further described.

Be illustrated in figure 1 a kind of anchor cable supercharging top, at least comprise piston rod 3, piston rod head 1, cylinder head 2, cylinder bucket 4, torque arm 11, pressure head 8, plunger rod 13, the pump housing 14 and reaction frame 16, wherein;

Described cylinder bung position is provided with cylinder head, and described piston rod is placed in described cylinder bucket, and the piston rod outer end is connected with piston rod head, and described piston rod head is exposed to outside cylinder head and is placed in the head inside groove of described reaction frame; The outer end of described cylinder head is placed in the head water jacket of described reaction frame;

Described cylinder bucket bottom is connected with the described pump housing by end-face hole, in the described pump housing, is provided with plunger rod; Perforation on described pressure head support end wears by location that pin is connected with an end of described torque arm with wire drawing, the perforation of described pump housing support end is worn pin 12 by location and is connected with the other end of described torque arm with wire drawing 10; The pressure port of described pressure head is worn pin 9 by slip and is connected described plunger rod with wire drawing 10;

Be provided with outlet valve 5 on the described pump housing; Junction at the described pump housing and described cylinder bucket arranges pressure regulator valve 15 separately;

An end at described pressure head is provided with depression bar 7; Also be provided with stop screw 6 on described pressure head.

Be provided with the first wedge plate 17 of opening by the piston rod head thrust on described reaction frame, also be provided with and matching used the second wedge plate 18 of the first wedge plate.

Operating principle of the present utility model is:

While going out cylinder, hydraulic oil drives plunger rod 13 by depression bar 7, pressure head 8 and does axially reciprocating, inject cylinder bucket 4 through reversal valve, continuous injection along with hydraulic oil, promote piston rod 3 reaches, first tiltedly the carving plate 17 and constantly move forward (tiltedly carving plate 17, second by first in advance tiltedly carves plate 18 and combine) in piston rod head 1 that promote to crouch, tiltedly carve plate, second along first and tiltedly carve 7 ° of inclined-planes between plate and carve and close, apply a vertical pulling force to ground tackle, finally realize the secondary pretension of anchor cable.After pretension completes, hydraulic oil enters the pump housing 14 by reversal valve, and piston rod 3 retreats, and does back the cylinder motion, exits in advance and presses closer, and fulfils assignment.

Above; it is only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.

Claims (2)

1. an anchor cable supercharging top, is characterized in that, at least comprises piston rod, piston rod head, cylinder head, cylinder bucket, torque arm, pressure head, plunger rod, the pump housing and reaction frame, wherein;

Described cylinder bung position is provided with cylinder head, and described piston rod is placed in described cylinder bucket, and the piston rod outer end is connected with piston rod head, and described piston rod head is exposed to outside cylinder head and is placed in the head inside groove of described reaction frame; The outer end of described cylinder head is placed in the head water jacket of described reaction frame;

Described cylinder bucket bottom is connected with the described pump housing by end-face hole, in the described pump housing, is provided with plunger rod; Perforation on described pressure head support end wears by location that pin is connected with an end of described torque arm with wire drawing, the perforation of described pump housing support end is worn pin by location and is connected with the other end of described torque arm with wire drawing; The pressure port of described pressure head is worn pin by slip and is connected described plunger rod with wire drawing;

Be provided with outlet valve on the described pump housing; Junction at the described pump housing and described cylinder bucket arranges pressure regulator valve separately;

An end at described pressure head is provided with depression bar;

Be provided with the first wedge plate of opening by the piston rod head thrust on described reaction frame, also be provided with and matching used the second wedge plate of the first wedge plate.

2. a kind of anchor cable supercharging according to claim 1 top, is characterized in that, also is provided with stop screw on described pressure head.

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