CN210269402U - Hydraulic fixing device for reinforcing steel bar bending tester - Google Patents

Abstract

The utility model discloses a hydraulic fixing device for a reinforcing steel bar bending tester, which comprises a testing machine platform, wherein a fixed bracket is fixedly arranged on the upper surface of the testing machine platform, a first clamping block is fixedly arranged at the bottom of the fixed bracket, one side of the first clamping block is also positioned at the bottom of the fixed bracket and is slidably provided with a second clamping block, one side of the first clamping block and one side of the second clamping block are both provided with clamping grooves, two groups of clamping grooves are both slidably provided with ejector rods, the surface of each ejector rod is provided with a first spring, one side of the first clamping block is equidistantly welded with two groups of guide shafts, the guide shafts are slidably arranged in the second clamping block, the surface of each guide shaft is provided with a second spring, the two ends of each second spring are respectively welded at one side of the first clamping block and the second clamping block, one side of the second clamping block, which is far away from the first clamping block, the fixing structure is stable, and the verticality is guaranteed, so that the bending experiment precision is improved.

Description

Hydraulic fixing device for reinforcing steel bar bending tester

Technical Field

The utility model relates to a bending tester technical field specifically is a fluid pressure type bending tester fixing device.

Background

The steel bar bending tester is a special device for performing cold bending test and plane reverse bending test on steel bars. The main technical parameters of the steel tube conform to GB1499.2-2007 part 2 of steel tubes for reinforced concrete: hot rolled ribbed bars and YB/T5126-2003 "bar plane reverse bend test protocol" and ISO 10065: 1900, regulations and requirements regarding cold bend testing and plane reverse bend testing. The product is widely applied to units of metallurgy, machine manufacturing industry, building industry, engineering supervision, technical quality supervision and the like to test the mechanical properties of forward and reverse bending of various reinforcing steel bars.

The existing steel bar bending test machines are mostly hydraulic, and have a horizontal type and a vertical type, the vertical steel bar bending test machines are installed and disassembled by screwing and loosening screws when the compression rods are replaced, the working efficiency is low, the screw fastening structure is unstable, the verticality of the compression rods cannot be guaranteed, and the vertical steel bar bending test machines are poor in test precision when used for steel bar bending tests with small diameters.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic type reinforcing steel bar bending test machine fixing device, a group of fixed supports are arranged on a hydraulic type reinforcing steel bar bending test machine platform, a group of clamping blocks are symmetrically arranged at the bottoms of the fixed supports, so that one group of clamping blocks slides at the bottom of the fixed supports, the distance between the two groups of clamping block supports can be conveniently adjusted to install a pressing rod for bending tests, and the fixing structure is stable; the clamping grooves are formed in the bottoms of the clamping blocks, the ejector rods are slidably mounted in the clamping grooves and used for clamping the pressing rods for the experiment, the pressing rods are clamped and fixed vertically and horizontally, and the verticality is guaranteed, so that the bending experiment precision is improved, and the problem in the background art is solved.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fluid pressure type bending test of steel bar machine fixing device, includes the testing machine platform, fixed surface installs the fixed bolster on the testing machine platform, fixed bolster bottom fixed mounting has first clamp splice, first clamp splice one side also is located fixed bolster bottom slidable mounting and has the second clamp splice, the draw-in groove has all been seted up to first clamp splice and second clamp splice one side, and is two sets of equal slidable mounting has the ejector pin in the draw-in groove, the ejector pin surface is provided with first spring, first clamp splice one side equidistance welding has two sets of guiding axles, guiding axle slidable mounting is in the second clamp splice, and the guiding axle surface is provided with the second spring, second spring both ends weld respectively in first clamp splice and second clamp splice one side, first clamp splice one side fixed mounting is kept away from to the second clamp splice has the regulation pole, the regulation pole runs through in fixed bolster one side.

Preferably, the first clamping block and the second clamping block are both in a semicircular columnar structure.

Preferably, a first sliding groove is formed in the bottom of the clamping groove, the ejector rod is in clearance fit with the first sliding groove, the supporting plate is fixedly welded to the top of the ejector rod, and two ends of the first spring are welded to the lower surface of the supporting plate and one side of the clamping groove respectively.

Preferably, two sets of second spouts have been seted up to the equidistance in the second clamp splice, the guide shaft is located the fixed welding of one end in the second spout and has the stopper, stopper and second spout clearance fit.

Preferably, one end of the adjusting rod is fixedly provided with a bearing at the connecting position of the second clamping block, and one end of the adjusting rod, which is far away from the bearing, is in key connection with a hand wheel.

Preferably, a guide groove is formed in the fixed support at the sliding position of the second clamping block.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the hydraulic steel bar bending test machine platform is provided with a group of fixed supports, and a group of clamping blocks are symmetrically arranged at the bottoms of the fixed supports, so that one group of clamping blocks slides at the bottoms of the fixed supports, the distance between the two groups of clamping block supports can be conveniently adjusted to install a pressing rod for a bending test, and the fixed structure is stable;

2. the clamping groove is formed in the bottom of the clamping block, the ejector rod is installed in the clamping groove in a sliding mode and used for tightening the pressing rod for the experiment, the pressing rod is fixed in a clamping mode vertically, horizontally and uniformly, and the bending experiment precision is improved.

Drawings

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

fig. 2 is an enlarged schematic structural view of a part B in fig. 1 according to the present invention;

fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 1 according to the present invention.

In the figure: 1. a testing machine platform; 2. fixing a bracket; 3. a first clamping block; 4. a second clamp block; 5. a card slot; 6. a top rod; 7. a first spring; 8. a guide shaft; 9. a second spring; 10. adjusting a rod; 11. a first chute; 12. a support plate; 13. a second chute; 14. a limiting block; 15. a bearing; 16. a hand wheel; 17. A guide groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a hydraulic fixing device for a steel bar bending tester comprises a tester platform 1, wherein a fixing support 2 is fixedly arranged on the upper surface of the tester platform 1, a first clamping block 3 is fixedly arranged at the bottom of the fixing support 2, one side of the first clamping block 3 is also positioned at the bottom of the fixing support 2, a second clamping block 4 is slidably arranged, and the first clamping block 3 and the second clamping block 4 are respectively arranged to fix a pressing rod for the steel bar bending tester, so that the hydraulic fixing device is stable in structure and convenient and fast to operate; clamping grooves 5 are formed in one sides of the first clamping block 3 and the second clamping block 4, and the clamping grooves 5 are arranged to clamp a T-shaped clamping head at the top of the compression bar, so that the compression bar is stressed uniformly, and the verticality of the compression bar is guaranteed; ejector rods 6 are slidably mounted in the two groups of clamping grooves 5, first springs 7 are arranged on the surfaces of the ejector rods 6, and the first springs 7 are arranged to provide clamping force; two groups of guide shafts 8 are equidistantly welded on one side of the first clamping block 3, the guide shafts 8 are slidably mounted in the second clamping block 4, and second springs 9 are arranged on the surfaces of the guide shafts 8 and the second springs 9, so that the gap at the threaded connection part of the adjusting rod 10 and the fixed support 2 is compensated, and the clamping structure of the fixing device is more stable; the both ends of second spring 9 weld respectively in first clamp splice 3 and second clamp splice 4 one side, and the second clamp splice 4 is kept away from first clamp splice 3 one side fixed mounting and is had regulation pole 10, adjusts pole 10 and runs through spiro union in fixed bolster 2 one side.

Specifically, first clamp splice 3 and second clamp splice 4 are semi-circular columnar structure, set up first clamp splice 3 and second clamp splice 4 and are semi-circular columnar structure, increase fixed contact surface.

Specifically, first spout 11 has been seted up to draw-in groove 5 bottom, ejector pin 6 and 11 clearance fit of first spout, and the fixed welding in ejector pin 6 top has layer board 12, and first spring 7 both ends weld respectively in layer board 12 lower surface and draw-in groove 5 one side, set up layer board 12, the fixed mounting of the first spring 7 of being convenient for.

Specifically, two sets of second chutes 13 are arranged in the second clamping block 4 at equal intervals, the guide shaft 8 is positioned in the second chutes 13, one end of the guide shaft is fixedly welded with a limiting block 14, the limiting block 14 is in clearance fit with the second chutes 13, the limiting block 14 is arranged, the ejector rod is placed to be oversized, and the ejector rod is separated from the second chutes 13 during adjustment.

Specifically, the bearing 15 is fixedly installed at the connecting position of the second clamping block 4 at one end of the adjusting rod 10, the adjusting rod 10 is connected with the hand wheel 16 through a key at the end far away from the bearing 15, the bearing 15 is arranged, the adjusting rod 10 is guaranteed to be rotationally pulled by the second clamping block 4, the hand wheel 16 is arranged, and the adjusting rod 10 is convenient to hold and rotate.

Specifically, the fixed support 2 is provided with a guide groove 17 at the sliding position of the second clamping block 4, and the guide groove 17 is arranged to facilitate the sliding installation of the second clamping block 4.

The structure principle is as follows: the hydraulic steel bar bending tester comprises a hydraulic steel bar bending tester platform 1, a group of fixed supports 2, a first clamping block 3 and a second clamping block 4 are symmetrically arranged at the bottoms of the fixed supports 2, so that the second clamping block 4 slides at the bottom of the fixed supports 2, when a pressure rod for the steel bar bending tester is fixed, an adjusting rod 10 is rotated to adjust the distance between the first clamping block 3 and the second clamping block 4, the adjusting rod 10 is rotated reversely to fix after the pressure rod is placed in the pressure rod, and the fixed structure is stable;

draw-in groove 5 is all seted up in first clamp splice 3 and 4 bottoms of second clamp splice to slidable mounting has ejector pin 6 in draw-in groove 5, when fixing the depression bar for the bending test machine of reinforcing bar, in fixing draw-in groove 5 with the T type dop at depression bar top, make its atress of direction about from top to bottom even all, it is guaranteed to hang down straightness, thereby improves crooked experiment precision.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a fluid pressure type bending test of steel bar machine fixing device, includes testing machine platform (1), its characterized in that: the testing machine platform (1) is fixedly provided with a fixed support (2) on the surface, the bottom of the fixed support (2) is fixedly provided with a first clamping block (3), one side of the first clamping block (3) is also positioned at the bottom of the fixed support (2) and is provided with a second clamping block (4) in a sliding manner, one side of the first clamping block (3) and one side of the second clamping block (4) are both provided with clamping grooves (5), two groups of clamping grooves (5) are both provided with ejector rods (6) in a sliding manner, the surface of each ejector rod (6) is provided with a first spring (7), two groups of guide shafts (8) are equidistantly welded on one side of the first clamping block (3) and one side of the second clamping block (4), the guide shafts (8) are slidably arranged in the second clamping block (4), the surface of each guide shaft (8) is provided with a second spring (9), and the two ends of each second spring (9) are respectively welded on, one side, far away from the first clamping block (3), of the second clamping block (4) is fixedly provided with an adjusting rod (10), and the adjusting rod (10) penetrates through and is in threaded connection with one side of the fixed support (2).

2. The fixing device of the hydraulic steel bar bending tester of claim 1, which is characterized in that: the first clamping block (3) and the second clamping block (4) are both in a semicircular columnar structure.

3. The fixing device of the hydraulic steel bar bending tester of claim 1, which is characterized in that: first spout (11) have been seted up to draw-in groove (5) bottom, ejector pin (6) and first spout (11) clearance fit, and ejector pin (6) top fixed weld have layer board (12), first spring (7) both ends weld respectively in layer board (12) lower surface and draw-in groove (5) one side.

4. The fixing device of the hydraulic steel bar bending tester of claim 1, which is characterized in that: two sets of second spout (13) have been seted up to the equidistance in second clamp splice (4), guiding axle (8) are located second spout (13) one end fixed weld has stopper (14), stopper (14) and second spout (13) clearance fit.

5. The fixing device of the hydraulic steel bar bending tester of claim 1, which is characterized in that: and one end of the adjusting rod (10) is positioned at the connecting position of the second clamping block (4) and is fixedly provided with a bearing (15), and one end of the adjusting rod (10) far away from the bearing (15) is connected with a hand wheel (16) in a key mode.

6. The fixing device of the hydraulic steel bar bending tester of claim 1, which is characterized in that: a guide groove (17) is formed in the fixed support (2) at the sliding position of the second clamping block (4).

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