CN218911983U

CN218911983U - Prestressed steel bar anchorage device

Info

Publication number: CN218911983U
Application number: CN202223269939.7U
Authority: CN
Inventors: 乔自勋
Original assignee: Hebei Qiaoshi Fastener Manufacturing Co ltd
Current assignee: Hebei Qiaoshi Fastener Manufacturing Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-04-25
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a prestress steel bar anchorage device which comprises an anchor box and an embedded anchor plate, wherein a positioning piece is arranged in the anchor box, the positioning piece is connected with a plurality of steel bars, the other end of each steel bar penetrates through the end wall of the anchor box and is connected with the embedded anchor plate, a locking component is arranged between the inner wall of the anchor box and the positioning piece, a box cover is arranged at the opening end of the anchor box, a pull rod is arranged in the middle of the box cover, a stop block fixedly connected with the positioning piece is arranged at the inner end of the pull rod, and a first nut is arranged on the pull rod positioned at the outer side of the box cover; after the anchor is arranged at the corresponding position of the building body, the nut is rotated to pull the pull rod to move rightwards, and all steel bars are uniformly pulled through the positioning piece, so that the pulling force can be uniformly distributed on each steel bar, and the expected prestress effect is achieved; and a locking assembly is arranged, and in the later stage, if the first nut is insufficient to fix the pull rod, the locking block is matched with the toothed plate to position, and double positioning is carried out, so that the stability of prestress is ensured.

Description

Prestressed steel bar anchorage device

Technical Field

The utility model relates to the technical field of bridges and buildings, in particular to a prestress steel bar anchorage device.

Background

The anchor means is a permanent anchor device used in prestressed concrete, which is an anchor tool for maintaining the tension of a prestressed tendon and transmitting the tension to the inside of the concrete in a post-tensioning structure or a member, also called as a prestressed anchor, and for maintaining the tension of a steel rod, in the prior art, in some building structures, a constructor usually adopts bolts and nuts for installation and fixation, and because the mode does not need other auxiliary equipment, the anchor device is widely used in some engineering projects with small volume, but only relies on the matched threads of the bolts and the nuts to bear the tension, the firmness is unreliable, the prestress loss is easy to cause, and when a plurality of steel rods are arranged, the constructor generally rotates the nuts one by one to stretch the steel rod, the constructor operates by experience, and the tension received by each steel rod is not ensured to be basically the same, so that the prestress loss is easy to cause, and the corresponding effect is not achieved.

The person skilled in the art therefore provides a pre-stressed steel bar anchor to solve the problems set out in the background above.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a prestress steel bar anchorage device which comprises an anchor box and an embedded anchor plate, wherein a positioning piece is arranged in the anchor box and is connected with a plurality of steel bars, the other ends of the steel bars penetrate through the end wall of the anchor box and are connected with the embedded anchor plate, a locking assembly is arranged between the inner wall of the anchor box and the positioning piece, a box cover is arranged at the open end of the anchor box, a pull rod is arranged in the middle of the box cover, a stop block fixedly connected with the positioning piece is arranged at the inner end of the pull rod, and a first nut is arranged on the pull rod positioned at the outer side of the box cover.

Preferably: the outside of the steel bar is provided with a corrugated pipe, one end of the corrugated pipe is fixed with the end part of the anchor box through a locating sleeve, and the other end of the corrugated pipe is fixed with the embedded anchor plate through a locating seat.

Preferably: the limiting ring sleeved outside the locating piece is fixedly arranged at the opening of the interior of the anchor box, and plays a limiting role on the locating piece, so that the locating piece is ensured to slide relative to the limiting ring.

Preferably: the middle part of the outer side end of the embedded anchor plate is provided with a groove, a base plate is arranged in the groove, through holes for inserting steel bars are formed in the base plate and the embedded anchor plate, and the steel bars are inserted into the through holes and fixed through nuts II.

Preferably: the locating piece includes the stop collar and sets up at the inside locating plate of just being connected with stop collar fixed connection of stop collar, sets up the through-hole that makes the bar iron male on the locating plate, and the bar iron inserts in the through-hole and is fixed through nut two, and the tip of stop collar is fixed to be set up the end plate, and the hole that makes the pull rod pass is seted up at the end plate middle part, and the end plate inboard corresponds hole department fixed setting dog, and the pull rod tip inserts in the hole and with dog fixed connection.

Preferably: the locking assembly comprises a locking block, the locking block is rotationally connected with the end face of the limiting sleeve through a pin shaft, a notch is formed in the connecting end of the locking block and the limiting sleeve, a torsion spring is sleeved on the pin shaft positioned in the notch, the locking assembly further comprises a dovetail groove formed in the inner side wall of the anchor box and corresponding to the locking block, a toothed plate matched with the dovetail groove is arranged in the dovetail groove, and positioning teeth on the toothed plate are correspondingly arranged with the locking block.

The utility model has the technical effects and advantages that:

compared with the prior art, the utility model has the beneficial effects that:

1. after the anchor is arranged at the corresponding position of the building body, the nut is rotated to pull the pull rod to move rightwards, and all steel bars are uniformly pulled through the positioning piece, so that the pulling force can be uniformly distributed on each steel bar, and the expected prestress effect is achieved; and a locking assembly is arranged, and in the later stage, if the first nut is insufficient to fix the pull rod, the locking block is matched with the toothed plate to position, and double positioning is carried out, so that the stability of prestress is ensured.

Drawings

FIG. 1 is a schematic structural view of a prestressed steel bar anchor provided in an embodiment of the present application;

FIG. 2 is a side view of a prestressed steel bar anchor provided by an embodiment of the present application;

FIG. 3 isbase:Sub>A schematic view of the structure of A-A in FIG. 1;

FIG. 4 is a block diagram of the view at B in FIG. 1;

FIG. 5 is a block diagram of FIG. 1 at C;

FIG. 6 is a side view of a toothed plate in a prestressed steel bar anchor provided by an embodiment of the present application;

fig. 7 is a connection structure diagram of a locating plate and a steel bar in the prestress steel bar anchorage device provided by the embodiment of the application;

fig. 8 is a side view of a stop collar in a prestressed steel bar anchor provided in an embodiment of the present application.

Wherein: the box body comprises an anchor box 1, a box cover 2, a limiting ring 3, a locking assembly 4, a locking block 41, a pin shaft 42, a torsion spring 43, a toothed plate 44, a limiting sleeve 5, a stop block 6, an end plate 7, a pull rod 8, a positioning plate 9, a first nut 10, a positioning sleeve 11, a steel rod 12, a corrugated pipe 13, a positioning seat 14, an embedded anchor plate 15, a base plate 16, a second nut 17 and a grouting channel 18.

Detailed Description

The present utility model will be described in further detail with reference to the following embodiments. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

Referring to fig. 1-8, in this embodiment, a prestressed steel bar anchorage device is provided, including an anchorage box 1 and an embedded anchorage plate 15, a positioning piece is disposed inside the anchorage box 1, the positioning piece is connected with a plurality of steel bars 12 disposed circumferentially, the other end of each steel bar 12 passes through the end wall of the anchorage box 1 and is connected with the embedded anchorage plate 15, a locking component 4 is disposed between the inner wall of the anchorage box 1 and the positioning piece, a box cover 2 is disposed at the open end of the anchorage box 1, a pull rod 8 is disposed in the middle of the box cover 2, a stop block 6 fixedly connected with the positioning piece is disposed at the inner end of the pull rod 8, a first nut 10 is disposed on the pull rod 8 outside the box cover 2, and after the anchorage device is disposed at a corresponding position of a building body, the first nut 10 is rotated to pull the pull rod 8 to uniformly pull all the steel bars 12 through the positioning piece, so that a tensile force can be uniformly distributed on each steel bar 12, and an expected prestress effect is achieved.

The outside of each steel bar 12 is provided with a corrugated pipe 13 independently, one end of the corrugated pipe 13 is fixed with the end part of the anchor box 1 through a locating sleeve 11, and the other end of the corrugated pipe 13 is fixed with an embedded anchor plate 15 through a locating seat 14, so that later slurry is filled independently, and the structural strength is higher.

The limiting ring 13 sleeved outside the positioning piece is fixedly arranged at the opening of the interior of the anchor box 1, and the limiting ring 13 plays a limiting role on the positioning piece and ensures that the positioning piece slides relative to the limiting ring 3.

The middle part of the outer side end of the embedded anchor plate 15 is provided with a groove, a base plate 16 is arranged in the groove, through holes for inserting the steel bars 12 are formed in the base plate 16 and the embedded anchor plate 15, and the steel bars 12 are inserted into the through holes and fixed through nuts II 17.

The locating part includes stop collar 5 and sets up at stop collar 5 inside and with stop collar 5 fixed connection's locating plate 9, set up on the locating plate 9 make bar 12 male through-hole, bar 12 inserts in the through-hole and fixed through nut two, and the tip of stop collar 5 is fixed to be set up end plate 7, and the hole that makes pull rod 8 pass is seted up at end plate 7 middle part, and end plate 7 inboard corresponds the fixed dog 6 that sets up in hole department, pull rod 8 tip inserts downthehole and with dog 6 fixed connection.

The locking assembly comprises a locking block 41, the locking block 41 is rotationally connected with the end face of a limit sleeve 5 through a pin shaft 42, a notch is formed in the connecting end of the locking block 41 and the limit sleeve 5, a torsion spring 43 is sleeved on the pin shaft 42 positioned in the notch, the locking assembly further comprises a dovetail groove formed in the inner side wall of the anchor box 1 and corresponding to the locking block 41, a toothed plate 44 matched with the dovetail groove is arranged in the dovetail groove, positioning teeth on the toothed plate 44 are arranged corresponding to the locking block 41, the locking block 41 can be rotated by the positioning teeth on the toothed plate 44 in the moving process of the locking block 41, after the high end of the positioning teeth is passed, the locking block 41 returns under the action of the torsion spring, and in the later stage, if a first nut 10 is insufficient to fix a pull rod 8, the locking block 41 is matched with the toothed plate 44 for positioning, and the stability of prestress is guaranteed.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. The utility model provides a prestressing force steel bar ground tackle, includes anchor box (1) and pre-buried anchor slab (15), anchor box (1) inside sets up the setting element, and many steel bars (12) are connected to the setting element, and the end wall that anchor box (1) was passed to the steel bar (12) other end is connected with pre-buried anchor slab (15), sets up locking subassembly (4) between anchor box (1) inner wall and the setting element, and the open end of anchor box (1) sets up case lid (2), and case lid (2) middle part sets up pull rod (8), and pull rod (8) inner set up dog (6) with setting element fixed connection, set up nut one (10) on pull rod (8) that are located case lid (2) outside.

2. The prestress steel bar anchorage device according to claim 1, wherein a corrugated pipe (13) is arranged on the outer side of the steel bar (12), one end of the corrugated pipe (13) is fixed with the end portion of the anchor box (1) through a locating sleeve (11), and the other end of the corrugated pipe (13) is fixed with an embedded anchor plate (15) through a locating seat (14).

3. The prestress steel bar anchorage device according to claim 1, wherein a limiting ring (3) sleeved on the outer side of the positioning piece is fixedly arranged at the opening of the interior of the anchorage box (1), and the limiting ring (3) plays a limiting role on the positioning piece and ensures that the positioning piece slides relative to the limiting ring (3).

4. The prestress steel bar anchorage device according to claim 1, characterized in that a groove is formed in the middle of the outer side end of the embedded anchorage plate (15), a base plate (16) is arranged in the groove, through holes for inserting the steel bar (12) are formed in the base plate (16) and the embedded anchorage plate (15), and the steel bar (12) is inserted into the through holes and fixed through a second nut (17).

5. The prestress steel bar anchorage device according to claim 1, wherein the positioning piece comprises a limiting sleeve (5) and a positioning plate (9) which is arranged inside the limiting sleeve (5) and fixedly connected with the limiting sleeve (5), a through hole for inserting a steel bar (12) is formed in the positioning plate (9), the steel bar (12) is inserted into the through hole and fixed through a nut II, an end plate (7) is fixedly arranged at the end part of the limiting sleeve (5), a hole for allowing a pull rod (8) to pass through is formed in the middle of the end plate (7), a stop block (6) is fixedly arranged at the position corresponding to the hole in the inner side of the end plate (7), and the end part of the pull rod (8) is inserted into the hole and fixedly connected with the stop block (6).

6. The prestress steel bar anchorage device according to claim 1, wherein the locking assembly comprises a locking block (41), the locking block (41) is rotationally connected with the end face of the limit sleeve (5) through a pin shaft (42), a notch is formed in the connecting end of the locking block (41) and the limit sleeve (5), a torsion spring (43) is sleeved on the pin shaft (42) positioned in the notch, the prestress steel bar anchorage device further comprises a dovetail groove formed in the inner side wall of the anchor box (1) and corresponding to the locking block (41), a toothed plate (44) matched with the dovetail groove is arranged in the dovetail groove, and positioning teeth on the toothed plate (44) are arranged corresponding to the locking block (41).