CN219806017U - Tool spanner - Google Patents

Abstract

The utility model discloses a tool spanner which is used for screwing an anchor nut in a notch to fix a tensioned prestress rod, and is characterized by comprising a handle, wherein one end of the handle is provided with an extension arm extending along the vertical direction, the tail end of the extension arm extends to one side far away from the handle to form a spanner, and the spanner is provided with a spanner opening matched with the anchor nut; the depth of the extension arm is matched with the depth of the notch, so that the extension arm extends to the anchoring nut from the outside of the notch, the spanner opening is sleeved on the anchoring nut, and the anchoring nut on the prestress rod is screwed. According to the tooling wrench, the use condition of the tensioning prestress rod is adjusted, so that the anchoring nut on the prestress rod can be rotated conveniently, and the tensioning process can be completed by matching with a jack.

Description

Tool spanner

Technical Field

The utility model belongs to the field of construction tools, and particularly relates to a tool wrench.

Background

In recent years, the large-span variable-section prestressed girder bridge is increasingly applied to the upper structure of the domestic bridge, and has the advantages of relatively low cost, simple and quick construction, small building height, strong adaptability, low maintenance cost and the like. In order to ensure the vertical prestress of the bridge and prevent the web plate from generating oblique cracks after the long-term use of the large-span girder bridge, the unbonded prestress steel bar is adopted for tensioning in the prior art, so that the unbonded prestress steel bar is ensured to provide enough prestress.

The existing unbonded prestressed steel bar is installed as follows:

(1) A plurality of rows of unbonded prestressed steel bars are arranged in the variable-section box girder, and each group of unbonded prestressed steel bars is fixedly connected with common steel bars of the box girder;

(2) Pouring concrete of the variable cross section box girder, and reserving a notch at a position above an anchor backing plate at the top of the unbonded prestressed steel bar when the concrete is poured;

(3) Installing a tension rod for tensioning the unbonded prestressed steel rod, connecting the bottom of the tension head with an exposed screw thread of the unbonded prestressed steel rod in a threaded manner, connecting a tension locking nut on the upper part of the tension rod in a threaded manner, and connecting the tension head on the bottom of the tension rod in a threaded manner;

(4) Taking down the tensioning lock nut, penetrating the jack along the tensioning rod until the support of the jack is supported on the top surface of the notch, and screwing the tensioning lock nut;

(5) The jack is adopted to start stretching the unbonded prestressed steel bar, a locking handle of the jack is rocked while stretching, and a top anchoring nut of the unbonded prestressed steel bar is locked through a nut sleeve of the jack;

(6) Releasing pressure of the jack, then taking down the tensioning lock nut at the top end of the tensioning rod, and taking down the jack, the tensioning rod and the tensioning head;

(7) And an anchoring baffle plate and an anchoring backup nut are sequentially arranged at the top of the anchoring nut.

However, the existing locking handle and jack are high in matching requirement, various conditions in the engineering are difficult to adapt, the locking handle cannot be used in many cases, and the anchoring nut is difficult to screw in the tensioning process.

Disclosure of Invention

The utility model provides a tool wrench, which aims to solve the technical problem that in the background art, anchoring nuts with different requirements are difficult to screw in under complex working condition environments.

In order to achieve the above purpose, the specific technical scheme of the tool wrench of the utility model is as follows:

the tool wrench is used for screwing an anchor nut in a notch to fix a tensioned prestress rod and is characterized by comprising a handle, wherein an extension arm extending along the vertical direction is formed at one end of the handle, a wrench head is formed at the tail end of the extension arm and extends to one side far away from the handle, and a wrench opening matched with the anchor nut is formed in the wrench head; the depth of the extension arm is matched with the depth of the notch, so that the extension arm extends to the anchoring nut from the outside of the notch, the spanner opening is sleeved on the anchoring nut, and the anchoring nut on the prestress rod is screwed.

Further, the spanner opening is in a through groove shape and is positioned at one end of the spanner head far away from the extension arm.

Further, the wrench opening is in a regular hexagon with a notch, and comprises a first inner wall and second inner walls positioned on two sides of the first inner wall, wherein the first inner wall and the two second inner walls are equal in length; and one side, far away from the first inner wall, of the second inner wall is also connected with a third inner wall, and the length of the third inner wall is shorter than that of the second inner wall.

Further, the spanner opening is a through hole and is arranged on one side of the spanner, which is far away from the handle.

Further, a ratchet mechanism and a sleeve are arranged on the wrench, the ratchet mechanism enables the sleeve to rotate unidirectionally on the wrench, and the wrench opening is arranged in the sleeve so as to screw the anchor nut.

Further, a rotating cavity is formed in the spanner, and through holes are formed in two sides of the rotating cavity; the outer wall of the sleeve forms a rotating shaft part, the rotating shaft part is sleeved in the rotating cavity, so that the sleeve rotates along the rotating cavity, and a ratchet is formed on the outer wall of the rotating shaft part; the spanner opening is aligned with the through hole so as to enable the prestress rod to penetrate through the spanner head.

Further, the ratchet mechanism comprises a pawl which is rotationally connected in the rotating cavity, one end of the pawl is rotationally connected with the wrench head, and the other end of the pawl can be clamped with the ratchet to fix the sleeve and the wrench head.

Further, a first elastic piece is arranged in the rotating cavity, one end of the first elastic piece is fixed in the rotating cavity, and the other end of the first elastic piece is fixed with the pawl so as to drive the pawl to rotate and clamp the ratchet.

Further, the rotating cavity is connected with a sliding cavity arranged along the outer wall of the rotating shaft part, the sliding cavity is connected with a stop block in a sliding manner, and one side of the stop block, which is close to the ratchet, is provided with stop teeth meshed with the ratchet; the sliding cavity is internally provided with a first positioning surface and a second positioning surface which are respectively formed on two sides, and the positioning surfaces can be used for the positioning block to be abutted for positioning; one side of the sliding cavity, which is far away from the ratchet, is rotationally connected with an adjusting switch, a second elastic piece is clamped between the adjusting switch and the stop block, and the adjusting switch rotates to change the direction of the second elastic piece, so that the stop block is pressed at the included angle between the first positioning surface and the rotating shaft part, or the included angle between the second positioning surface and the rotating shaft part.

Further, the second elastic piece is an elastic telescopic rod, one end of the elastic telescopic rod is sleeved on the blind hole of the adjusting switch, and the other end of the elastic telescopic rod is propped in the groove on the stop block.

The tool wrench has the following advantages: the tool spanner is adjusted according to the use condition of the tensioning prestress rod, so that the anchoring nut on the prestress rod can be rotated conveniently, and the tensioning process can be completed by matching with the jack.

Drawings

FIG. 1 is a schematic view of the prestress rod and anchor nut mounting structure of the present utility model;

FIG. 2 is a schematic diagram of a notch open tooling wrench according to the present utility model;

FIG. 3 is a schematic diagram of a notch-closed tooling wrench;

FIG. 4 is a schematic view of a ratchet mechanism according to the present utility model;

FIG. 5 is a schematic view of an adjustable ratchet mechanism of the present utility model.

The figure indicates:

1. a pre-stressing rod; 11. an anchor nut; 2. a handle; 21. an extension arm; 22. a spanner; 3. pulling the mouth; 4. a sleeve; 41. a rotating shaft portion; 5. a pawl; 6. a stop block; 61. a groove; 7. a sliding chamber; 71. a first positioning surface; 72. a second positioning surface; 8. an adjusting switch; 81. a second elastic member; 9. notch.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

As shown in fig. 1, the tooling wrench of the present utility model is used for screwing the anchor nut 11 in the notch 9 to fix the tensioned prestressing rod 1. Specifically, the tool wrench comprises a handle 2, wherein one end of the handle 2 is provided with an extension arm 21 extending along the vertical direction, the tail end of the extension arm 21 extends to the side far away from the handle 2 to form a wrench head 22, and the wrench head 22 is provided with a wrench opening 3 matched with an anchor nut 11; and the depth of the extension arm 21 is matched with the depth of the notch 9, so that the extension arm 21 extends to the position of the anchor nut 11 from the outside of the notch, the spanner opening 3 is sleeved on the anchor nut 11, and the anchor nut 11 on the prestress rod 1 is screwed.

During tensioning, the spanner opening 3 is clamped on the anchor nut 11, a through jack is arranged, the through jack stretches the prestressed rod 1 outwards, along with pulling out of the prestressed rod 1, the handle 2 positioned outside the notch 9 is rotated, the anchor nut 11 is rotated through a tool spanner, and the pulled-out prestressed rod 1 is fixed.

As shown in fig. 2, in one embodiment, the spanner opening 3 is in a through groove shape and is positioned at one end of the spanner head 22 away from the extension arm 21, so that the spanner opening 3 is arranged to be open, the spanner opening 3 is conveniently sleeved on the anchor nut 11, and the spanner opening 3 can be connected with and separated from the anchor nut 11 in construction engineering. Because the anchoring nut 11 is in a regular hexagon shape, the spanner opening 3 is in a regular hexagon shape with a missing edge, and comprises a first inner wall and second inner walls positioned at two sides of the first inner wall, and the first inner wall and the two second inner walls are equal in length; and one side, far away from the first inner wall, of the second inner wall is also connected with a third inner wall, and the length of the third inner wall is shorter than that of the second inner wall.

In another embodiment, as shown in fig. 3, the spanner opening 3 is a through hole and is formed on the side of the spanner 22 away from the handle 2, so that the spanner opening 3 is arranged to be closed, and the spanner opening 3 and the anchoring nut 11 are firmly connected. Because the anchoring nut 11 is in a regular hexagon shape, the spanner opening 3 is in a regular hexagon hole shape.

In order to facilitate repeated rotation of the anchor nut 11, a ratchet mechanism and a sleeve 4 are provided on the wrench 22, the ratchet mechanism enables the sleeve 4 to rotate unidirectionally on the wrench 22, and the wrench opening 3 is provided in the sleeve 4 to screw the anchor nut 11.

As shown in fig. 4, specifically, a rotation cavity is formed in the wrench head 22, and through holes are formed at both sides of the rotation cavity; the outer wall of the sleeve 4 forms a rotating shaft part 41, and the rotating shaft part 41 is sleeved in the rotating cavity, so that the sleeve 4 rotates along the rotating cavity. While the jaws 3 are aligned with the through holes for the pre-stressing rod 1 to penetrate the wrench 22.

The ratchet mechanism comprises a ratchet wheel positioned on the outer wall of the rotating shaft part 41 and a pawl 5 rotatably connected in the rotating cavity, one end of the pawl 5 is rotatably connected with the spanner 22, and the other end of the pawl 5 can be clamped with the ratchet wheel to fix the sleeve 4 and the spanner 22. Therefore, when the ratchet rotates in the forward direction, the pawl 5 is clamped with the ratchet, the sleeve 4 is fixed with the spanner 22, and the anchoring nut 11 can be screwed by rotating the handle 2; when the ratchet rotates reversely, the pawl 5 slides along the ratchet, the sleeve 4 can rotate in the rotating cavity, so that the handle 2 is reset, and the next cycle of screwing is convenient.

And the rotating cavity is internally provided with a first elastic piece, one end of the first elastic piece is fixed with the inner wall of the rotating cavity, and the other end of the first elastic piece is fixed with the pawl 5 so as to drive the pawl 5 to rotate and clamp the ratchet. Typically, the first spring member is a tension spring.

In addition, as shown in fig. 5, a ratchet mechanism capable of adjusting the unidirectional control direction can be adopted, a sliding cavity 7 arranged along the outer wall of the rotating shaft part 41 is connected to the rotating cavity, a stop block 6 is connected to the sliding cavity 7 in a sliding manner, and a stop tooth meshed with the ratchet is arranged on one side, close to the ratchet, of the stop block 6; a first positioning surface 71 and a second positioning surface 72 are respectively formed on two sides in the sliding cavity 7, and the positioning surfaces can be used for the abutment of the stop block 6 for positioning; the sliding cavity 7 is connected with an adjusting switch 8 in a rotating way on one side far away from the ratchet, a second elastic piece 81 is clamped between the adjusting switch 8 and the stop block 6, the adjusting switch 8 rotates to change the direction of the second elastic piece 81, and the stop block 6 is pressed at the included angle between the first positioning surface 71 and the rotating shaft part 41, or the included angle between the second positioning surface 72 and the rotating shaft part 41. In general, the second elastic member 81 is an elastic telescopic rod, one end of which is sleeved on the blind hole of the adjusting switch 8, and the other end of which is propped in the groove 61 on the stop block 6. And the spanner 22 is provided with a through hole which exposes the adjusting switch 8 so as to rotate the adjusting switch 8.

When the stop block 6 is pressed at the included angle between the first positioning surface 71 and the rotating shaft portion 41, the handle 2 is rotated in the forward direction, the first positioning surface 71 props against the stop block 6, so that the ratchet teeth are meshed with the stop teeth, and the rotating shaft portion 41 is fixed, namely, the sleeve 4 is fixed, and screwing of the anchor nut 11 can be performed; and the handle 2 is reversely rotated, the second elastic member 81 is compressed under force, the stop block 6 is separated from the ratchet, the sleeve 4 can rotate relative to the spanner 22, and the handle 2 can be reset.

Conversely, when the stop block 6 is pressed at the included angle between the second positioning surface 72 and the rotating shaft portion 41, the handle 2 is reversely rotated, and the second positioning surface 72 abuts against the stop block 6 to engage the ratchet with the stop tooth, so that the rotating shaft portion 41 is fixed, that is, the sleeve 4 is fixed, and screwing of the anchor nut 11 can be performed; and the handle 2 is rotated in the forward direction, the second elastic piece 81 is compressed under force, the stop block 6 is separated from the ratchet, the sleeve 4 can rotate relative to the spanner 22, and the handle 2 can be reset.

In summary, by providing an independent tool wrench, the anchor nut 11 is conveniently rotated and adjusted according to engineering requirements.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The tool wrench is used for screwing an anchor nut in a notch to fix a tensioned prestress rod and is characterized by comprising a handle, wherein an extension arm extending along the vertical direction is formed at one end of the handle, a wrench head is formed at the tail end of the extension arm and extends to one side far away from the handle, and a wrench opening matched with the anchor nut is formed in the wrench head; the depth of the extension arm is matched with the depth of the notch, so that the extension arm extends to the anchoring nut from the outside of the notch, the spanner opening is sleeved on the anchoring nut, and the anchoring nut on the prestress rod is screwed.

2. The tool wrench of claim 1, wherein the wrench opening is in the shape of a through slot and is located at an end of the wrench head remote from the extension arm.

3. The tool wrench as claimed in claim 2, wherein the wrench opening is in a regular hexagon with a notch, and comprises a first inner wall, and second inner walls positioned on two sides of the first inner wall, wherein the first inner wall and the two second inner walls are equal in length; and one side, far away from the first inner wall, of the second inner wall is also connected with a third inner wall, and the length of the third inner wall is shorter than that of the second inner wall.

4. The tool wrench of claim 1, wherein the wrench opening is a through hole and is formed on a side of the wrench head away from the handle.

5. The tool wrench of claim 4, wherein the wrench head is provided with a ratchet mechanism and a sleeve, the ratchet mechanism enabling the sleeve to rotate unidirectionally on the wrench head, and the wrench opening is provided in the sleeve for screwing the anchor nut.

6. The tool wrench as claimed in claim 5, wherein a rotation cavity is formed in the wrench head, and through holes are formed at both sides of the rotation cavity; the outer wall of the sleeve forms a rotating shaft part, the rotating shaft part is sleeved in the rotating cavity, so that the sleeve rotates along the rotating cavity, and a ratchet is formed on the outer wall of the rotating shaft part; the spanner opening is aligned with the through hole so as to enable the prestress rod to penetrate through the spanner head.

7. The tool wrench of claim 6, wherein the ratchet mechanism comprises a pawl rotatably connected in the rotation cavity, one end of the pawl is rotatably connected with the wrench head, and the other end of the pawl is capable of being clamped with the ratchet to fix the sleeve and the wrench head.

8. The tool wrench of claim 7, wherein the first elastic member is disposed in the rotation chamber, and one end of the first elastic member is fixed to the rotation chamber, and the other end of the first elastic member is fixed to the pawl to drive the pawl to rotate and engage the ratchet.

9. The tool wrench as claimed in claim 6, wherein the rotating cavity is connected with a sliding cavity arranged along the outer wall of the rotating shaft part, the sliding cavity is slidably connected with a stop block, and a stop tooth meshed with the ratchet is arranged on one side of the stop block close to the ratchet; the sliding cavity is internally provided with a first positioning surface and a second positioning surface which are respectively formed on two sides, and the positioning surfaces can be used for the positioning block to be abutted for positioning; one side of the sliding cavity, which is far away from the ratchet, is rotationally connected with an adjusting switch, a second elastic piece is clamped between the adjusting switch and the stop block, and the adjusting switch rotates to change the direction of the second elastic piece, so that the stop block is pressed at the included angle between the first positioning surface and the rotating shaft part, or the included angle between the second positioning surface and the rotating shaft part.

10. The tool wrench of claim 9, wherein the second elastic member is an elastic telescopic rod, one end of the elastic telescopic rod is sleeved on the blind hole of the adjusting switch, and the other end of the elastic telescopic rod is propped in the groove on the stop block.