CN215392204U

CN215392204U - Reverse bending tester for reinforcing steel bars

Info

Publication number: CN215392204U
Application number: CN202121423420.2U
Authority: CN
Inventors: 谢智焕; 殷建安; 宋晓艳; 霍曙敏
Original assignee: Changzhou Jianhao Building Appraisal And Testing Co ltd
Current assignee: Changzhou Jianhao Building Appraisal And Testing Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-04
Anticipated expiration: 2031-06-25

Abstract

The utility model relates to the technical field of bending testing machines and discloses a reverse bending testing machine for a reinforcing steel bar, which comprises a workbench, wherein a plurality of support columns are fixedly and symmetrically connected to the left and right of the upper end of the workbench, the upper ends of the support columns are fixedly connected with the same transverse plate, an extrusion cylinder is fixedly inserted and sleeved at the center of the transverse plate, a bending block is fixedly connected to an output shaft at the lower end of the extrusion cylinder, two U-shaped fixing seats are fixedly and symmetrically connected to the upper end of the workbench, the inner wall of one side, opposite to the U-shaped fixing seat, of the U-shaped fixing seat is rotatably connected with the same rotating block through a rotating shaft, a torsion spring sleeved outside the rotating shaft is fixedly connected to one side, opposite to the U-shaped fixing seat and the rotating block, a clamping frame is fixedly connected to the upper end of the clamping frame, a plurality of insertion holes are formed in the upper end of the clamping frame, and a pressing rod is movably inserted and arranged in the insertion holes. The utility model ensures that the two ends of the reinforcing steel bar can incline along with the reinforcing steel bar when the reinforcing steel bar is bent, ensures the bending smoothness and ensures the bending quality and efficiency.

Description

Reverse bending tester for reinforcing steel bars

Technical Field

The utility model relates to the technical field of bending testers, in particular to a reverse bending tester for a steel bar.

Background

The steel bar reverse bending tester is a kind of process equipment for cold bending test and plane reverse bending test of steel bar. The testing machine comprises a frame, a workbench, a working disc, a speed reducer, a pressing device, an electrical control box, a safety protection cover, a bending accessory and the like, and has the characteristics of compact structure, simplicity in operation, high bearing capacity, stability in operation, low noise, visual display of bending angle, safety, reliability, convenience in maintenance and the like.

The existing reinforcing steel bar reverse bending tester is mainly used for horizontally clamping reinforcing steel bars when used, but two ends of the reinforcing steel bars are tilted in the bending process, a clamping mechanism which is kept horizontal all the time hinders the bending process of the reinforcing steel bars, and the experimental operation cannot be well carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, a reinforcing steel bar reverse bending tester is used for horizontally clamping most reinforcing steel bars, but two ends of the reinforcing steel bars are tilted in the bending process, a clamping mechanism which is always kept horizontal hinders the bending process of the reinforcing steel bars, and the experimental operation cannot be well carried out.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a reverse bending tester for reinforcing steel bars comprises a workbench, wherein a plurality of support columns are fixedly and symmetrically connected to the left and right of the upper end of the workbench, the upper ends of the support columns are fixedly connected with the same transverse plate, an extrusion cylinder is fixedly inserted and sleeved at the center of the transverse plate, a bending block is fixedly connected to an output shaft at the lower end of the extrusion cylinder, two U-shaped fixing seats are fixedly and symmetrically connected to the upper end of the workbench, the inner wall of one opposite side of each U-shaped fixing seat is rotatably connected with the same rotating block through a rotating shaft, a torsion spring sleeved outside the rotating shaft is fixedly connected to one opposite side of each U-shaped fixing seat and one opposite side of each rotating block, a clamping frame is fixedly connected to the upper end of each rotating block, a plurality of insertion holes are formed in the upper end of each clamping frame, pressing rods are movably inserted in the insertion holes, the lower ends of the pressing rods are fixedly connected with the same pressing wheel, and the upper ends of the pressing rods are fixedly connected with the same fixing plate, the lower end of the fixed plate and the upper end of the clamping frame are fixedly connected with a plurality of pull-down springs which are respectively sleeved outside the plurality of pressure rods.

Preferably, the four corners of the bottom of the workbench are fixedly connected with supporting legs.

Preferably, the lower extreme bilateral symmetry fixedly connected with two cardboards of workstation, the fixed biax motor that is provided with in lower extreme intermediate position of workstation, the equal fixedly connected with of both ends output shaft of biax motor rotates the screw rod, the one end of rotating the screw rod is passed through the bearing and is connected with the lateral wall rotation of cardboard, the pole wall screw thread of rotating the screw rod has cup jointed the movable plate, the rectangle opening that the workstation surface was seted up is passed through to the upper end of movable plate, the same limit baffle of upper end lateral wall through a plurality of extrusion spring fixedly connected with of movable plate.

Preferably, the inner wall of the workbench corresponding to the rectangular opening is fixedly connected with a plurality of guide sliding rods, and the side wall of the moving plate is provided with a sliding hole in sliding sleeve connection with the guide sliding rods.

Preferably, the opposite sides of the moving plate and the limiting baffle are symmetrically and fixedly connected with a plurality of limiting telescopic rods.

Compared with the prior art, the utility model provides a reverse bending tester for a steel bar, which has the following beneficial effects:

1. this reinforcing bar reverse bending test machine, through the extrusion cylinder that is equipped with, the extrusion cylinder promotes the piece of bending and moves down and can realize bending fast to the reinforcing bar, place the reinforcing bar in two centre gripping frames, pull-down spring pull-down fixed plate, the fixed plate drives the pinch roller through the depression bar and moves down the crimping and realize spacing the firm of reinforcing bar in the both ends outside of reinforcing bar, because the rotation of U-shaped fixing base and commentaries on classics piece is connected, the reinforcing bar both ends can slope thereupon when bending the reinforcing bar and guarantee the smooth and easy nature of bending, the quality and the efficiency of bending have been guaranteed.

2. This reinforcing bar reverse bend testing machine through the limit baffle that is equipped with, starts the biax motor when placing the reinforcing bar, and the biax motor drives and rotates the screw rod and rotates, and the screw cup joints the effect through the screw thread that rotates screw rod and movable plate and makes the movable plate drive limit baffle and remove, and then stabilizes spacing fender to the both ends of reinforcing bar and connect for the reinforcing bar is difficult to take place the skew when bending, further guarantees the quality of bending.

And the parts not related in the device are the same as or can be realized by adopting the prior art, the utility model ensures that the two ends of the reinforcing steel bar can be inclined along with the bending when the reinforcing steel bar is bent, thereby ensuring the bending smoothness and the bending quality and efficiency.

Drawings

Fig. 1 is a schematic structural view of a reverse bending tester for steel bars according to the present invention;

FIG. 2 is a schematic structural view of a portion A of a reverse bending tester for steel bars according to the present invention;

fig. 3 is a schematic side view of the connection between the U-shaped fixing seat and the rotating block of the reverse bending tester for reinforcing steel bars according to the present invention.

In the figure: the device comprises a workbench 1, support columns 2, transverse plates 3, extrusion cylinders 4, bending blocks 5, U-shaped fixed seats 6, rotating shafts 7, rotating blocks 8, torsion springs 9, clamping frames 10, pressing rods 11, pressing wheels 12, fixed plates 13, pull-down springs 14, supporting legs 15, clamping plates 16, a double-shaft motor 17, a rotating screw 18, a movable plate 19, a rectangular opening 20, extrusion springs 21, a limiting baffle 22 and a guide sliding rod 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, a reverse bending tester for reinforcing steel bars comprises a workbench 1, wherein a plurality of support columns 2 are fixedly connected to the upper end of the workbench 1 in a bilateral symmetry manner, a same transverse plate 3 is fixedly connected to the upper ends of the support columns 2, an extrusion cylinder 4 is fixedly inserted into the center of the transverse plate 3, a bending block 5 is fixedly connected to the lower end output shaft of the extrusion cylinder 4, two U-shaped fixing seats 6 are fixedly connected to the upper end of the workbench 1 in a bilateral symmetry manner, the same rotating block 8 is rotatably connected to the inner wall of one side of the U-shaped fixing seat 6 opposite to the rotating block 8 through a rotating shaft 7, a torsion spring 9 sleeved outside the rotating shaft 7 is fixedly connected to one side of the U-shaped fixing seat 6 and the rotating block 8, a clamping frame 10 is fixedly connected to the upper end of the rotating block 8, a plurality of insertion holes are formed in the upper end of the clamping frame 10, pressing rods 11 are movably inserted into the insertion holes, and the lower ends of the pressing wheels 12 are fixedly connected to the plurality of the pressing rods 11, the upper ends of the pressing rods 11 are fixedly connected with the same fixing plate 13, and the lower ends of the fixing plate 13 and the upper end of the clamping frame 10 are fixedly connected with a plurality of pull-down springs 14 which are respectively sleeved outside the pressing rods 11.

The four corners of the bottom of the workbench 1 are fixedly connected with supporting legs 15.

Two cardboard 16 of lower extreme bilateral symmetry fixedly connected with of workstation 1, the fixed double-shaft motor 17 that is provided with of lower extreme intermediate position of workstation 1, the equal fixedly connected with of both ends output shaft of double-shaft motor 17 rotates screw rod 18, the one end of rotating screw rod 18 is passed through the bearing and is connected with cardboard 16's lateral wall rotation, the pole wall screw thread that rotates screw rod 18 has cup jointed movable plate 19, rectangular opening 20 that the upper end of movable plate 19 was seted up through workstation 1 surface runs through the upper end of workstation 1, the same limit baffle 22 of upper end lateral wall through a plurality of extrusion springs 21 fixedly connected with of movable plate 19.

The inner wall of the workbench 1 corresponding to the rectangular opening 20 is fixedly connected with a plurality of guide slide bars 23, and the side wall of the movable plate 19 is provided with a slide hole which is in slide sleeve joint with the guide slide bars 23.

A plurality of limiting telescopic rods are symmetrically and fixedly connected to one opposite sides of the moving plate 19 and the limiting baffle 22.

In the utility model, when in use, the extrusion cylinder 4 is arranged, the extrusion cylinder 4 pushes the bending block 5 to move downwards to realize rapid bending of the reinforcing steel bar, the reinforcing steel bar is placed in the two clamping frames 10, the pull-down spring 14 pulls the fixed plate 13 downwards, the fixed plate 13 drives the pressing wheel 12 to move downwards through the pressing rod 11 to be pressed and connected at the outer sides of two ends of the reinforcing steel bar to realize stable limiting of the reinforcing steel bar, the two ends of the reinforcing steel bar can incline along with the U-shaped fixed seat 6 and the rotating block 8 when the reinforcing steel bar is bent due to the rotary connection of the U-shaped fixed seat 6 and the rotating block 8, so that the bending smoothness is ensured, the bending quality and the bending efficiency are ensured, the double-shaft motor 17 is started when the reinforcing steel bar is placed, the double-shaft motor 17 drives the rotating screw rod 18 to rotate, the moving plate 19 drives the limiting baffle 22 to move through the threaded sleeve effect of the rotating screw rod 18 and the moving plate 19, and further stably and limitedly block two ends of the reinforcing steel bar, the steel bar is not easy to shift when being bent, and the bending quality is further ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The reverse bending tester for the reinforcing steel bars comprises a workbench (1) and is characterized in that a plurality of support columns (2) are fixedly and symmetrically connected to the upper end of the workbench (1), a plurality of same transverse plates (3) are fixedly and fixedly connected to the upper ends of the support columns (2), an extrusion cylinder (4) is fixedly inserted into the center of each transverse plate (3), a bending block (5) is fixedly connected to the lower end output shaft of each extrusion cylinder (4), two U-shaped fixing seats (6) are fixedly and symmetrically connected to the upper end of the workbench (1), the inner wall of one side, opposite to each U-shaped fixing seat (6), is rotatably connected with a same rotating block (8) through a rotating shaft (7), a torsion spring (9) sleeved outside the rotating shaft (7) is fixedly and connected to one side, opposite to each U-shaped fixing seat (6) and each rotating block (8), and a clamping frame (10) is fixedly connected to the upper end of each rotating block (8), the utility model discloses a clamp device, including centre gripping frame (10), the upper end of centre gripping frame (10) is seted up a plurality of jacks and jack internalization and is inserted and be equipped with depression bar (11), many the same pinch roller (12) of the lower extreme fixedly connected with of depression bar (11), many the same fixed plate (13) of the upper end fixedly connected with of depression bar (11), the lower extreme of fixed plate (13) and the upper end fixedly connected with of centre gripping frame (10) a plurality of cover are established respectively and are established pull-down spring (14) outside many depression bars (11).

2. The reverse bar bending tester according to claim 1, wherein the bottom four corners of the working table (1) are fixedly connected with supporting legs (15).

3. The reverse bending tester for the steel bars according to claim 1 is characterized in that two clamping plates (16) are fixedly connected to the lower end of the workbench (1) in a bilateral symmetry manner, a double-shaft motor (17) is fixedly arranged in the middle of the lower end of the workbench (1), output shafts at two ends of the double-shaft motor (17) are fixedly connected with rotating screws (18), one end of each rotating screw (18) is rotatably connected with the side wall of each clamping plate (16) through a bearing, a moving plate (19) is sleeved on the rod wall of each rotating screw (18) in a threaded manner, a rectangular opening (20) formed in the surface of the workbench (1) penetrates through the upper end of the workbench (1) at the upper end of each moving plate (19), and the side wall of the upper end of each moving plate (19) is fixedly connected with the same limiting baffle (22) through a plurality of extrusion springs (21).

4. The reverse bending tester for the steel bars according to claim 3, characterized in that a plurality of guide sliding rods (23) are fixedly connected to the inner wall of the workbench (1) corresponding to the rectangular opening (20), and a sliding hole which is slidably sleeved with the guide sliding rods (23) is formed in the side wall of the moving plate (19).

5. The reverse bending tester for steel bars according to claim 3, characterized in that a plurality of limiting telescopic rods are symmetrically and fixedly connected to one side of the moving plate (19) and the limiting baffle (22) opposite to each other.