CN210322559U

CN210322559U - Clamp for steel bar drawing test

Info

Publication number: CN210322559U
Application number: CN201920135089.0U
Authority: CN
Inventors: 盖利彦; 李青; 齐连蕊
Original assignee: Hebei Wanbo Inspection And Testing Technology Service Co Ltd
Current assignee: Hebei Wanbo Inspection And Testing Technology Service Co Ltd
Priority date: 2019-01-26
Filing date: 2019-01-26
Publication date: 2020-04-14
Anticipated expiration: 2029-01-26

Abstract

The utility model discloses an anchor clamps for reinforcing bar is drawn experimentally, including the anchor clamps seat, anchor clamps seat up end central point puts and has seted up the through-hole, and the anchor clamps seat sliding tray of rectangle is all seted up along both sides to the through-hole wall of anchor clamps seat, and the top surface and the bottom surface intermediate position of anchor clamps seat sliding tray are provided with the slip track, the slip track is V type arch, and slidable mounting has the assorted reinforcing bar dop on the anchor clamps seat sliding tray, the utility model discloses can be applicable to not unidimensional reinforcing bar and draw experiment, simple structure, convenient operation.

Description

Clamp for steel bar drawing test

Technical Field

The utility model relates to an anchor clamps for reinforcing bar is drawn experimentally belongs to the reinforcing bar and draws side test technical field.

Background

The bonding strength of the steel bar and the building material (such as concrete) obtained through the drawing test is an important link which needs to be considered in the building engineering, and is related to the determination of the anchoring length of the steel bar in the material and the safety of the building in the use process. The test method comprises fixing a sample to be tested such as a steel bar by an upper clamp and a lower clamp, loading a certain load, and recording a stress-strain curve.

The Chinese patent with the publication number of CN205483808U discloses a drawing test and measurement device suitable for a universal machine, wherein an upper base plate and a lower base plate are movably connected with a screw rod, the middle parts of the upper base plate and the lower base plate are respectively provided with a through hole and a groove, the vertical direction axle lines of the two through holes coincide, a connecting piece is movably connected with the upper base plate through the through hole and the groove in the middle part of the upper base plate, the middle part of a lower spherical hinge is provided with the through hole, the through hole coincides with the vertical direction axle line of the through hole of the lower base plate, and the lower spherical hinge is movably connected with the lower base plate through the groove in the lower base plate; two through-holes have been seted up at the angle steel at the middle part, and the vertical direction of two through-holes coincides with the vertical direction axis of U type hoop tip respectively, U type hoop and angle steel swing joint, connection piece and angle steel fixed connection, measuring hopper and test piece loading end fixed connection, connection framework and test piece free end reinforcing bar fixed connection.

In the prior art, the clamp cannot be suitable for steel bars of different types and different thicknesses, and is inconvenient to replace after being suitable for abrasion for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides an anchor clamps for reinforcing bar is drawn experimentally, can be applicable to not unidimensional reinforcing bar and draw the experiment, and it is convenient to change after wearing and tearing simultaneously, simple structure, convenient operation.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a clamp for a steel bar drawing test comprises a clamp seat, wherein a through hole is formed in the center of the upper end face of the clamp seat, rectangular clamp seat sliding grooves are formed in the wall of the through hole of the clamp seat along two sides, sliding rails are arranged in the middle of the top face and the bottom face of each clamp seat sliding groove, each sliding rail is a V-shaped bulge, a matched steel bar clamping head is slidably mounted on each clamp seat sliding groove, V-shaped grooves matched with the sliding rails are formed in the corresponding positions of the upper end face and the lower end face of each steel bar clamping head, the side face of the small end of each steel bar clamping head is an arc face, a tooth plate is arranged on the arc face of each steel bar clamping head, clamping teeth are arranged on the tooth plate, the side face of the large end of each steel bar clamping head is a plane, a push rod is mounted on the large end face of each steel bar clamping head in a, the end of the push rod is provided with a handle.

The utility model discloses technical scheme's further improvement lies in: the handle is a cylinder, and the outer surface of the handle is provided with a convex rib.

The utility model discloses technical scheme's further improvement lies in: four angles of the clamp seat are provided with round mounting holes.

The utility model discloses technical scheme's further improvement lies in: the through hole in the center of the upper end surface of the clamp seat is arc-shaped on two sides of the sliding groove of the clamp seat, and the other two side surfaces are planes.

The utility model discloses technical scheme's further improvement lies in: the reinforcing steel bar clamping heads are two.

Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:

the utility model discloses a be provided with the dental lamina on the reinforcing bar chuck, be provided with the card tooth on the dental lamina, the push rod produces very big pressure and frictional force to the reinforcing bar through the card tooth, can produce very big gripping power to the reinforcing bar, and the reinforcing bar head sets up to two simultaneously, can adjust the clearance between the card tooth through the push rod, can all produce very big gripping power to the reinforcing bar of different sizes; meanwhile, after the clamping teeth are worn after long-time use, the whole clamp does not need to be replaced, the steel bar clamping head is directly replaced, the replacement is convenient, and the cost is saved.

The sliding track that sets up on the anchor clamps seat sliding tray and the V type recess phase-match on the reinforcing bar dop for when the rotatory reinforcing bar dop of impelling of push rod, the reinforcing bar dop moves ahead along sliding track, can not squint, turns into the revolving force power that advances, and the bead that sets up on the handle can increase frictional force, easily gripping.

Drawings

FIG. 1 is a top partially cut-away schematic view of the present invention;

FIG. 2 is a schematic view of the utility model in the A direction;

FIG. 3 is a schematic sectional view of the fixture seat of the present invention in the direction A;

the steel bar clamping device comprises a clamp base 1, a clamp base 2, a steel bar clamping head 3, a push rod 4, a handle 5, a clamp base sliding groove 6, a sliding rail 7, a V-shaped groove 8 and a tooth plate.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

as shown in fig. 1, 2 and 3, a clamp for a steel bar drawing test comprises a clamp base 1, the clamp base 1 is rectangular, a through hole is arranged at the center of the upper end face, the through hole is a long round through hole with two planar sides, a clamp base sliding groove 5 is arranged on the arc through hole wall at two sides of the clamp base 1, the clamp base sliding groove 5 is rectangular, sliding rails 6 are arranged on the top surface and the bottom surface of the clamp base sliding groove 5, the sliding rails 6 are V-shaped protrusions and are arranged at the middle positions of the top surface and the bottom surface of the clamp base sliding groove 5, a steel bar clamping head 2 is slidably mounted on the clamp base sliding groove 5, and V-shaped grooves 7 matched with the sliding rails 6 are arranged at the corresponding positions of the upper end face and the lower end face of the steel bar clamping head 2, the small end side face of the steel bar clamping head 2 is an arc face and faces the center of the clamp base 1, the large end, be provided with dental lamina 8 on the arcwall face of reinforcing bar dop 2, be provided with card tooth on dental lamina 8, can increase the gripping power to the reinforcing bar, push rod 3 is installed in the laminating of the big terminal surface of reinforcing bar dop 2, and push rod 3 and reinforcing bar dop 2 are two parts of laminating mutually, and not the fastening is in the same place, and the surface of push rod 3 is provided with the external screw thread, and anchor clamps seat 1 is provided with assorted internal thread through-hole for the position of push rod 3, handle 4 is installed to the tip of push rod 3, and handle 4 sets up to the cylinder, and the surface of handle 4 is provided with the bead, can increase the gripping power, and four angles of anchor clamps seat 1.

During the use with the reinforcing bar insert two reinforcing bar dop 2 the centre, turning handle 4 for 2 chucking reinforcing bars of reinforcing bar dop can.

Claims

1. The utility model provides a anchor clamps for reinforcing bar is drawn experimental which characterized in that: comprises a clamp seat (1), the central position of the upper end surface of the clamp seat (1) is provided with a through hole, the wall of the through hole of the clamp seat (1) is provided with a rectangular clamp seat sliding groove (5) along two sides, the middle positions of the top surface and the bottom surface of the clamp seat sliding groove (5) are provided with sliding tracks (6), the sliding tracks (6) are V-shaped bulges, the clamp seat sliding groove (5) is provided with a matched reinforcing steel bar chuck (2) in a sliding way, the corresponding positions of the upper end surface and the lower end surface of the reinforcing steel bar chuck (2) are provided with V-shaped grooves (7) matched with the sliding tracks (6), the side surface of the small end of the reinforcing steel bar chuck (2) is an arc-shaped surface, the arc-shaped surface of the reinforcing steel bar chuck (2) faces to the center of the clamp seat (1), the arc-shaped surface of the reinforcing steel bar chuck (2) is provided with a tooth plate (8), the tooth plate (, push rod (3) are installed in the laminating of the big terminal surface of reinforcing bar dop (2), and the surface of push rod (3) is provided with the external screw thread, and anchor clamps seat (1) is provided with assorted internal thread through-hole for the position of push rod (3), handle (4) are installed to the tip of push rod (3).

2. The clamp for the steel bar drawing test according to claim 1, wherein: the handle (4) is a cylinder, and the outer surface of the handle (4) is provided with a convex rib.

3. The clamp for the steel bar drawing test according to claim 1, wherein: four corners of the clamp seat (1) are provided with round mounting holes.

4. The clamp for the steel bar drawing test according to claim 1, wherein: the through hole in the center of the upper end face of the clamp seat (1) is positioned on two sides of the slide groove (5) of the clamp seat and is an arc-shaped face, and the other two side faces are planes.

5. The clamp for the steel bar drawing test according to claim 1, wherein: the steel bar clamping heads (2) are arranged in two.