CN212265655U

CN212265655U - Screwing wrench for prestress finish rolling threaded steel bar fastening nut

Info

Publication number: CN212265655U
Application number: CN202020918141.2U
Authority: CN
Inventors: 魏志文; 赵凡; 刘洋涛; 姜志亮; 王鑫
Original assignee: First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Current assignee: First Engineering Co Ltd of China Railway No 12 Bureau Group Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-01
Anticipated expiration: 2030-05-27

Abstract

The utility model belongs to the technical field of the bridge construction, concretely relates to prestressing finish rolling twisted steel fastening nut revolves spanner with revolving, in the current bridge prestressing force construction operation of having solved, screw up the difficulty during vertical finish rolling twisted steel prestressing force stretch-draw, the problem that the quality is difficult to guarantee, including the spanner body, the spanner body includes clamping part and rotation portion, rotation portion includes the handle that the level set up, the one end of handle is connected with rather than the vertical sleeve pipe of vertically, the clamping part includes that the level sets up and one end open-ended chuck, the rigidity that the open end was kept away from to the chuck has the vertical pole of vertically, the outside that lies in vertical pole and vertical sheathed tube is provided with the fixed plate of mutual symmetry respectively, be connected with between two fixed plates and become holistic double-end screw with the two, double-end screw's both ends all are connected. The utility model discloses can realize fast in the stretch-draw recess with the fastening nut's of finish rolling twisted steel connection fixed to effectively guarantee the anchor quality of prestressing force finish rolling.

Description

Screwing wrench for prestress finish rolling threaded steel bar fastening nut

Technical Field

The utility model belongs to the technical field of the bridge construction, concretely relates to prestressing finish rolling twisted steel fastening nut is with revolving wrong spanner.

Background

The prestressed structural bridge becomes an indispensable part in domestic bridge construction, and in most prestressed bridges, finish-rolled twisted steel bars are widely used as vertical prestressed bars. Because the finish rolling twisted steel designs single-end stretch-draw, need to reserve the recess at the stretch-draw end, accomplish the stretch-draw work in later stage, because design and actual construction conditions restrict, stretch-draw recess design is all very little, after the prestressing force finish rolling twisted steel, need tighten the nut to play the effect of anchor. Because the fastening nut is positioned in the tensioning groove, the existing tool is difficult to tighten, and the open end wrench is usually used for obliquely penetrating into the tensioning groove to tighten the anchorage device at present, so that the operation difficulty is high, and the tensioning quality cannot be ensured.

Therefore, it is very important to design a special wrench suitable for tensioning the groove to fasten the finish-rolled threaded steel bar nut.

Disclosure of Invention

The utility model discloses an among the prestressing force construction operation of current bridge of solution, difficulty, the problem that the quality is difficult to guarantee are screwed up to ground tackle during vertical prestressing finish rolling twisted steel prestressing tendons stretch-draw, provide a prestressing finish rolling twisted steel fastening nut with revolving wrong spanner.

The utility model discloses a realize through following technical scheme: the utility model provides a prestressing force finish rolling twisted steel fastening nut is with revolving spanner soon, which comprises a wrench body, the spanner body includes clamping part and rotation portion, rotation portion includes the handle that the level set up, the one end of handle is connected with rather than the vertical sleeve pipe of vertically, the clamping part includes that the level sets up and one end open-ended chuck, the chuck is opposite with the extending direction of handle, the rigidity that the open end was kept away from to the chuck has vertically vertical round bar, vertical round bar inserts vertical sleeve pipe and can do the relative slip, be located vertical round bar and vertical sheathed tube outside and be provided with the fixed plate of mutual symmetry respectively, the fixed plate is the rectangular plate that the level set up, be connected with between two fixed plates and fix into holistic double-end screw, double-end screw's both ends all are.

Wherein, the middle part of the chuck is provided with an inner concave surface which is adaptive to the external dimension of the fastening nut.

Further, the thickness of the collet is greater than 1/2 and less than 2/3 of the thickness of the fastening nut.

Furthermore, the middle parts of the fixing plates are provided with through holes, the through holes of the two fixing plates are respectively fixedly connected with the vertical round rods and the vertical sleeve, fixing holes are symmetrically arranged on two sides of each through hole, and the fixing holes are used for penetrating through the double-headed screws.

Further, a fixing plate connected with the vertical sleeve is arranged at a position 3-5 cm away from the lower end of the vertical sleeve, and a fixing plate connected with the vertical round rod is arranged at a position 15-20 cm away from the upper end face of the vertical round rod.

Compared with the prior art, the utility model has the advantages that:

the utility model has the advantages of reasonable design, treat that after prestressing force finish rolling steel stretch-draw, stretch-draw operation personnel can utilize this spanner to realize fast in the stretch-draw recess with finish rolling twisted steel connected's fastening nut's fixed to effectively guarantee the anchor quality of prestressing force finish rolling steel. The utility model discloses can carry out extensive popularization in any bridge field that has vertical prestressing force tensioning demand such as highway, railway.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the wrench body of FIG. 1;

fig. 3 is a schematic structural view of the present invention in a use state;

FIG. 4 is a schematic structural view of the rotating part in FIG. 1;

FIG. 5 is a schematic view of the structure of the middle clamping portion of FIG. 1;

fig. 6 is a schematic plan view of the fixing plate of fig. 1.

In the figure: 1-concrete beam body, 2-tensioning groove, 3-post-anchor spiral bar, 4-finish-rolled twisted steel bar, 5-steel pipe, 6-wrench body, 7-fastening nut, 8-backing plate, 9-tensioning split heads, 10-tensioning jack, 11-clamping part, 11.1-clamping head, 11.2-vertical round bar, 12-rotating part, 12.1-handle, 12.2-vertical sleeve, 13-fixing plate, 13.1-rectangular plate, 13.2-through hole, 13.3-fixing hole, 14-locking nut and 15-double-head screw.

Detailed Description

The utility model is further explained by referring to fig. 1-6, a screwing wrench for a prestressed finish-rolled threaded steel bar fastening nut comprises a wrench body 6, the wrench body 6 comprises a clamping part 11 and a rotating part 12, the rotating part 12 comprises a horizontally arranged handle 12.1, one end of the handle 12.1 is connected with a vertical sleeve 12.2 vertical to the handle, the clamping part 11 comprises a horizontally arranged chuck 11.1 with one end open, the extending direction of the chuck 11.1 is opposite to that of the handle 12.1, a vertical round rod 11.2 is fixed at the position of the chuck 11.1 far away from the open end, the vertical round rod 11.2 is inserted into the vertical sleeve 12.2 and can slide relatively, mutually symmetrical fixing plates 13 are respectively arranged at the outer sides of the vertical round rod 11.2 and the vertical sleeve 12.2, the fixing plates 13 are horizontally arranged rectangular plates 13.1, a double-head screw 15 capable of fixing the two fixing plates into a whole is connected between the two fixing plates 13, both ends of the double-head screw 15 are connected with a locking nut 14, the middle part of the clamping head 11.1 is provided with an inner concave surface which is adapted to the outer dimension of the fastening nut 7, and the thickness of the clamping head 11.1 is greater than 1/2 of the thickness of the fastening nut 7 and less than 2/3 of the thickness of the fastening nut 7.

The middle parts of the fixing plates 13 are provided with through holes 13.2, the through holes 13.2 of the two fixing plates 13 are respectively fixedly connected with the vertical round rods 11.2 and the vertical sleeves 12.2, fixing holes 13.3 are symmetrically arranged at two sides of the through holes 13.2, and the fixing holes 13.3 are used for penetrating through the double-headed screw 15; the fixing plate 13 connected with the vertical sleeve 12.2 is arranged at a position 3-5 cm away from the lower end of the vertical sleeve 12.2, and the fixing plate 13 connected with the vertical round rod 11.2 is arranged at a position 15-20 cm away from the upper end face of the vertical round rod 11.2.

Utilize the utility model discloses the process of realizing prestressing finish rolling twisted steel fastening nut locking as follows:

when the concrete beam body 1 needs to be vertically tensioned by the finish rolling threaded steel bars 4 after the construction is completed, the lower ends of the finish rolling threaded steel bars 4 are anchored in advance. Further, a tensioning jack 10 is adopted to tension the finish rolling twisted steel 4 on the upper part of the beam; the tensioning jack 10 is arranged on a tensioning split heads 9, the tensioning split heads 9 are erected on the outer side of the tensioning groove 2, finish-rolled threaded steel bars 4 penetrate through the tensioning groove 2, a base plate 8 with anchored rear spiral bars 3 is arranged at the position, in contact with the concrete beam body 1, of the bottom of the tensioning groove 2, a fastening nut 7 is in threaded connection with the finish-rolled threaded steel bars 4 on the upper portion of the base plate 8, and the finish-rolled threaded steel bars 4 in the concrete beam body 1 are arranged in the steel pipe 5.

After tensioning jack 10 reached predetermined stress value to the stretch-draw of finish rolling twisted steel 4, it is usable the utility model discloses it is fixed to twist soon fastening nut 7.

Firstly, the length of the vertical round bar 11.2 of the clamping part 11 combined with the vertical sleeve 12.2 of the rotating part 12 is adjusted according to the depth of the tensioning groove 2 and the height of the tensioning split heads 9. So that the vertical distance between the horizontal plane of the handle 12.1 and the concrete beam body 1 is not less than 8cm, i.e. the distance is ensured to be not less than the thickness of a normal adult fist.

Further, after inserting two fixed plate 13's fixed orifices 13.3 with two double-end screw 15 symmetries, utilize lock nut 14 to fix, accomplish the utility model discloses a revolve wrong preceding regulation.

The utility model discloses in the use, embolia earlier chuck 11.1 and chucking fastening nut 7 back, twist grip 12.1 realization fastening nut 7's tightening again. Wherein, due to the blocking of the tensioning split heads 9, the handle 12.1 cannot realize the rotation of the whole circle, and the final tightening of the fastening nut 7 can be realized by repeatedly screwing for a plurality of times.

Claims

1. The utility model provides a prestressing finish rolling twisted steel fastening nut is with revolving spanner, includes spanner body (6), its characterized in that: the wrench body (6) comprises a clamping part (11) and a rotating part (12), the rotating part (12) comprises a handle (12.1) arranged horizontally, one end of the handle (12.1) is connected with a vertical sleeve (12.2) perpendicular to the handle, the clamping part (11) comprises a chuck (11.1) arranged horizontally and provided with an opening at one end, the chuck (11.1) is opposite to the extending direction of the handle (12.1), a vertical round rod (11.2) is fixed at a position, away from the opening end, of the chuck (11.1), the vertical round rod (11.2) is inserted into the vertical sleeve (12.2) and can slide relatively, fixing plates (13) which are symmetrical to each other are respectively arranged on the outer sides of the vertical round rod (11.2) and the vertical sleeve (12.2), the fixing plates (13) are rectangular plates (13.1) arranged horizontally, a double-head screw (15) capable of fixing the two fixing plates into a whole is connected between the two fixing plates (13), and two ends of the double-head screw (.

2. The screwing wrench for the prestressed finish-rolled threaded reinforcing bar fastening nut as claimed in claim 1, wherein: the middle part of the clamping head (11.1) is provided with an inner concave surface which is adaptive to the external dimension of the fastening nut (7).

3. The screwing wrench for the prestressed finish-rolled threaded reinforcing bar fastening nut as claimed in claim 2, wherein: the thickness of the clamping head (11.1) is greater than 1/2 of the thickness of the fastening nut (7) and less than 2/3 of the thickness of the fastening nut (7).

4. The screwing wrench for the prestressed finish-rolled threaded reinforcing bar fastening nut as claimed in claim 1, wherein: the middle part of fixed plate (13) is provided with through-hole (13.2), through-hole (13.2) of two fixed plate (13) respectively with vertical round bar (11.2), vertical sleeve pipe (12.2) fixed connection, through-hole (13.2) bilateral symmetry is provided with fixed orifices (13.3), fixed orifices (13.3) are used for running through double-end screw (15).

5. The screwing wrench for a prestressed finish-rolled threaded reinforcing bar fastening nut according to claim 1 or 4, wherein: the fixing plate (13) connected with the vertical sleeve (12.2) is arranged at a position 3-5 cm away from the lower end of the vertical sleeve (12.2), and the fixing plate (13) connected with the vertical round rod (11.2) is arranged at a position 15-20 cm away from the upper end face of the vertical round rod (11.2).