CN221256184U - Tensioning tool for prestressed anchor cable - Google Patents

Abstract

The utility model provides a prestressed anchorage cable tensioning instrument, includes the shell, is equipped with the supporting part in the shell, and the middle part of supporting part is equipped with soon to connect the ring, and the outer wall screw thread that soon connects the ring connects has the rotation seat, and the sliding seat has been placed to the upside of rotating the seat, and the upside fixedly connected with sliding plate of sliding seat has placed two at least jacks around soon the ring equipartition of connecing on the supporting part, and the upper end of jack can support the sliding plate, is provided with the opening in the position that corresponds the jack on the shell. The sliding seat is limited by the rotating seat, so that the jack can be taken out of the tool after being retracted, and the jack can be taken out of the tool, so that the expenditure cost of the tool in use is reduced.

Description

Tensioning tool for prestressed anchor cable

Technical Field

The utility model relates to the technical field of prestressed anchor cables, in particular to a tensioning tool for a prestressed anchor cable.

Background

After the prestress is applied to the anchoring system, the locking prestress value of the anchoring system can be changed due to various factors, and the prestress cable can be more or less subjected to prestress relaxation under the action of various natural factors and human factors, so that compensation tensioning is needed when the relaxation reaches a limit.

In the prior art, for example, the Chinese patent number is: the auxiliary tensioning tool for the anchor cable of the CN217758761U comprises steel strand anchor cables on the outer wall of a rib column, wherein the steel strand anchor cables respectively penetrate through holes of the special-shaped anchor and are fixed in position through the through holes of the special-shaped anchor, the tensioning tool has the advantages of being simple and convenient to operate and guaranteeing the quality of the prestressed anchor cable, but the jack cannot be taken out from the tool after the anchor cable is tensioned, so that the tensioning tool is high in expenditure cost in use.

Disclosure of utility model

The utility model aims to solve the technical problems that: the problem that exists among the above-mentioned background art is solved, provides a prestressed anchorage cable tensioning tool, carries out spacingly through rotating the seat to the sliding seat after the slip to make the jack can take out in this instrument, because the jack can take out in this instrument, thereby reduced the expenditure cost when this instrument is used.

In order to achieve the technical characteristics, the aim of the utility model is realized in the following way: the prestressed anchor cable tensioning tool comprises a shell, wherein a supporting part is arranged in the shell, a rotary joint ring is arranged in the middle of the supporting part, a rotary seat is screwed on the outer wall of the rotary joint ring, a sliding seat is arranged on the upper side of the rotary seat, a sliding plate is fixedly connected to the upper side of the sliding seat, at least two jacks are uniformly arranged on the supporting part around the rotary joint ring, the upper ends of the jacks can abut against the sliding plate, and openings are formed in the shell at positions corresponding to the jacks; in the use state, the pre-stressed anchor cable to be stretched penetrates into the screwed ring from the bottom of the shell and is fixedly connected with the sliding seat.

The support part is fixedly provided with at least two guide rods around the rotary joint ring, the lower side of the rotating seat is provided with a sliding ring, the sliding ring is movably sleeved outside the rotary joint ring and is connected with the guide rods in a sliding fit manner, a spring is further arranged between the sliding ring and the support part, and one side of the rotating seat, which is propped against the sliding ring, is respectively provided with an end face tooth structure which is matched with the sliding ring.

And the supporting part is provided with a limiting ring for positioning the jack.

The top of sliding seat is equipped with wide taper groove down, installs two at least toper clamping flaps in the taper groove, and prestressing force anchor cable passes through toper clamping flaps and is connected fixedly with the sliding seat.

The bottom in the shell still is provided with the sliding block, and prestressing force anchor cable passes the sliding block and with sliding block fixed connection, and still symmetrical slidable mounting has the extrusion piece between sliding block downside and the shell bottom, and the face that extrusion piece and sliding block contacted each other is the inclined plane, still rotates spacing installing the screw rod in the position that corresponds the extrusion piece on the shell, and the screw rod connects soon with the extrusion piece.

The extrusion block is also provided with a guide hole, the inner wall of the shell is fixedly provided with a guide post at a position corresponding to the guide hole, and the guide post is inserted into the guide hole in a sliding manner.

An opening and closing door is arranged on the opening of the shell.

The utility model has the following beneficial effects:

1. When the prestressed anchor cable is tensioned, the prestressed anchor cable is firstly penetrated into the screwed ring from the bottom of the shell and is fixedly connected with the sliding seat, the jacks are symmetrically or annularly and uniformly arranged on the supporting part, synchronously lifted to push the sliding plate to move upwards, so that the prestressed anchor cable is tensioned, after the prestressed anchor cable is tensioned, the rotating seat is pulled upwards to enable the rotating seat to abut against the sliding seat, and the sliding seat is limited by the rotating seat, so that the jack can be taken out from the tool after being retracted, and the expenditure cost of the tool in use is reduced because the jack can be taken out from the tool.

2. The spring is used for pushing the sliding ring, and the sliding ring limits the rotating seat through the end face tooth structure matched with the rotating seat, so that the rotating seat is prevented from rotating downwards due to vibration, and tensioning failure is prevented.

3. According to the utility model, the extrusion block is pushed to move to one side of the prestressed anchor cable by rotating the screw rod, so that the extrusion block is tightly abutted against the sliding block, and the tensile force born by the rotating seat is distributed, so that the tensioned prestressed anchor cable is not easy to loosen.

Drawings

Fig. 1 is a schematic view of the external structure of the present utility model.

Fig. 2 is a schematic diagram of the internal structure of the present utility model.

FIG. 3 is a schematic cross-sectional view of the present utility model.

Fig. 4 is a schematic cross-sectional view of another direction of the present utility model.

In the figure: the device comprises a shell 1, a supporting part 101, a screwing ring 102, a limiting ring 103, a sliding seat 2, a squeezing block 3, a pre-stress anchor cable 4, a sliding block 5, a jack 6, a rotating seat 7, a sliding ring 8, a spring 9, a guide rod 10, a screw 11, a sliding plate 12, a conical clamping flap 13, a guide post 14 and an opening and closing door 15.

Detailed Description

Embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1-4, a prestressed anchor cable tensioning tool comprises a housing 1, wherein a supporting part 101 is arranged in the housing 1, a screwing ring 102 is arranged in the middle of the supporting part 101, a rotating seat 7 is screwed on the outer wall of the screwing ring 102, a sliding seat 2 is arranged on the upper side of the rotating seat 7, a sliding plate 12 is fixedly connected on the upper side of the sliding seat 2, at least two jacks 6 are uniformly distributed on the supporting part 101 around the screwing ring 102, the upper ends of the jacks 6 can abut against the sliding plate 12, and openings are formed in positions, corresponding to the jacks 6, on the housing 1. When the pre-stressed anchor cable 4 needs to be tensioned, the pre-stressed anchor cable 4 penetrates into the screwing ring 102 from the bottom of the shell 1 and is fixedly connected with the sliding seat 2, the jacks 6 are symmetrically or annularly and uniformly distributed on the supporting part 101 and synchronously lifted, the sliding plate 12 is pushed to move upwards, so that the pre-stressed anchor cable 4 is tensioned, the rotating seat 7 is shifted upwards after the tensioning, the rotating seat 7 is abutted to the sliding seat 2, and the sliding seat is limited by the rotating seat, so that the jack can be taken out from the tool after retraction, and the jack can be taken out from the tool, so that the expenditure cost of the tool in use is reduced.

Further, at least two guide rods 10 are fixedly mounted on the supporting portion 101 around the rotary joint ring 102, a sliding ring 8 is mounted on the lower side of the rotating seat 7, the sliding ring 8 is movably sleeved outside the rotary joint ring 102 and is connected with the guide rods 10 in a sliding fit manner, a spring 9 is mounted between the sliding ring 8 and the supporting portion 101, and referring to fig. 2, end face tooth structures matched with each other are respectively arranged on the abutting sides of the rotating seat 7 and the sliding ring 8. The spring 9 is used for pushing the sliding ring 8, and the sliding ring 8 limits the rotating seat 7 through an end face tooth structure matched with the rotating seat 7, so that the rotating seat 7 is prevented from rotating downwards due to vibration, and tensioning failure is caused.

When the rotating seat 7 needs to be adjusted by stirring, the sliding ring 8 is pressed down, so that the sliding ring 8 is separated from the end face tooth structure matched with the rotating seat 7, and then the rotating seat 7 is stirred. After the stirring is finished, the sliding ring 8 is loosened, and the sliding ring 8 is pushed to move upwards under the action of the spring 9, so that the end face tooth structure matched with the movable ring 8 and the rotating seat 7 is matched again.

Referring to fig. 4, a limit ring 103 for positioning the jack 6 is provided on the supporting portion 101, so that the jack 6 can be positioned and the jack 6 can be prevented from falling down.

The prestressed anchor cable 4 can be welded with the sliding seat 2 and can be connected by adopting a working clamping piece in the CN 217758761U. In a preferred scheme, referring to fig. 4, the top of the sliding seat 2 is provided with a conical groove with a wide top and a narrow bottom, at least two conical clamping petals 13 are arranged in the conical groove, and the pre-stressed anchor cable 4 is fixedly connected with the sliding seat 2 through the conical clamping petals 13. The prestress anchor cable 4 can be conveniently and stably clamped and fixed through the matching of the conical clamping flaps 13 and the conical grooves. The prestress anchor cable 4 is clamped by the plurality of conical clamping petals 13 and is matched with the conical groove, the prestress anchor cable 4 is tensioned approximately, and the more tightly the prestress anchor cable 4 is clamped by the conical clamping petals 13.

In order to ensure the stability of the tensioning tool for tensioning the prestressed anchor cable 4, see fig. 2 and 3, the bottom in the shell 1 is further provided with a sliding block 5, the prestressed anchor cable 4 passes through the sliding block 5 and is fixedly connected with the sliding block 5, the extruding block 3 is symmetrically and slidably arranged between the lower side of the sliding block 5 and the bottom of the shell 1, the surfaces of the extruding block 3 and the sliding block 5, which are mutually contacted, are inclined surfaces, the shell 1 is further provided with a screw 11 in a rotating and limiting mode at the position corresponding to the extruding block 3, and the screw 11 is screwed with the extruding block 3 in a threaded mode. The extrusion block 3 is pushed to move to the side of the pre-stress anchor cable 4 by rotating the screw 11, so that the extrusion block 3 is tightly abutted against the sliding block 5, and the tensile force applied to the rotating seat 7 is distributed. Specifically, the screw 11 is provided with flanges on both sides of the housing 1, respectively, and the screw 11 is rotatable but axially immovable by the flanges on both sides.

Further, the extrusion block 3 is further provided with a guide hole, the guide column 14 is fixedly arranged on the inner wall of the shell 1 at the position corresponding to the guide hole, and the guide column 14 is slidably inserted into the guide hole, so that the stability of the extrusion block 3 is ensured.

Referring to fig. 1, an opening of the housing 1 is provided with an opening/closing door 15 for closing the housing 1.

The working principle of the utility model is as follows:

When the prestressed anchor cable 4 is tensioned, the prestressed anchor cable 4 firstly passes through the sliding block 5, the rotary joint ring 102 and the sliding seat 2, the upper end of the prestressed anchor cable 4 is connected with the sliding seat 2 through the conical clamping valve 13, the sliding seat 2 is positioned on the sliding plate 12 in a bolt connection or welding mode, and the sliding block 5 and the prestressed anchor cable 4 are welded and fixed. The jacks 6 are respectively put into the limiting rings 103 on the supporting parts 101 from the opening and closing doors 15, and each jack 6 is synchronously lifted to push the sliding plate 12 to move upwards, so that the pre-stressed anchor cable 4 is tensioned.

After tensioning in place, the sliding ring 8 is pressed down, so that the end face tooth structure matched with the sliding ring 8 and the rotating seat 7 is separated, the rotating seat 7 is shifted, the upper end of the rotating seat 7 is abutted against the sliding seat 2, then the sliding ring 8 is loosened, the sliding ring 8 is pushed upwards under the action of the spring 9, and the end face tooth structure matched with the rotating seat 7 is matched again.

And then the screw 11 is rotated to push the extrusion block 3 to move to the side of the pre-stressed anchor cable 4, so that the extrusion block 3 is tightly abutted against the sliding block 5, and the tensile force applied to the rotating seat 7 is distributed.

After that, the jack 6 is shortened and taken out from the opening and closing door 15 for tensioning of the next pre-stressed anchor cable 4.

Claims (7)

1. A prestressed anchorage cable tensioning tool, its characterized in that: the lifting device comprises a shell (1), wherein a supporting part (101) is arranged in the shell (1), a rotary joint ring (102) is arranged in the middle of the supporting part (101), a rotary seat (7) is screwed on the outer wall of the rotary joint ring (102), a sliding seat (2) is arranged on the upper side of the rotary seat (7), a sliding plate (12) is fixedly connected to the upper side of the sliding seat (2), at least two jacks (6) are uniformly arranged on the supporting part (101) around the rotary joint ring (102), the upper ends of the jacks (6) can be abutted against the sliding plate (12), and openings are formed in positions, corresponding to the jacks (6), on the shell (1); in the use state, the pre-stressed anchor cable (4) to be stretched penetrates into the screwing ring (102) from the bottom of the shell (1) and is fixedly connected with the sliding seat (2).

2. A pre-stressed anchor line tensioning tool as claimed in claim 1, wherein: the support part (101) is fixedly provided with at least two guide rods (10) around the rotary joint ring (102), the lower side of the rotary seat (7) is further provided with a sliding ring (8), the sliding ring (8) is movably sleeved outside the rotary joint ring (102) and is connected with the guide rods (10) in a sliding fit manner, a spring (9) is further arranged between the sliding ring (8) and the support part (101), and one side, propped against the sliding ring (8), of the rotary seat (7) is respectively provided with an end face tooth structure matched with the sliding ring (8).

3. A pre-stressed anchor line tensioning tool as claimed in claim 1, wherein: and the supporting part (101) is provided with a limiting ring (103) for positioning the jack (6).

4. A pre-stressed anchor line tensioning tool as claimed in claim 1, wherein: the top of sliding seat (2) is equipped with wide taper groove down, installs two at least toper clamping lamella (13) in the taper groove, and prestressing force anchor rope (4) are connected fixedly with sliding seat (2) through toper clamping lamella (13).

5. A pre-stressed anchor line tensioning tool as claimed in claim 1, wherein: the bottom in shell (1) still is provided with sliding block (5), and prestressed anchorage cable (4) pass sliding block (5) and with sliding block (5) fixed connection, and sliding mounting that still symmetry between sliding block (5) downside and shell (1) bottom has extrusion piece (3), and the face of extrusion piece (3) and sliding block (5) mutual contact is the inclined plane, still rotates spacing installation screw rod (11) in the position that corresponds extrusion piece (3) on shell (1), and screw rod (11) connect soon with extrusion piece (3).

6. The pre-stressed anchor line tensioning tool of claim 5, wherein: the extrusion block (3) is also provided with a guide hole, the inner wall of the shell (1) is fixedly provided with a guide column (14) at the position corresponding to the guide hole, and the guide column (14) is inserted into the guide hole in a sliding manner.

7. A pre-stressed anchor line tensioning tool as claimed in claim 1, wherein: an opening and closing door (15) is arranged on the opening of the shell (1).