CN215866114U - Novel bolt tensile test anchor clamps - Google Patents

Abstract

The utility model discloses a novel bolt tension test fixture which comprises a first fixture block and a second fixture block which are coaxially arranged, wherein a first pull rod used for being connected with a hydraulic testing machine is arranged at one end, away from the second fixture block, of the first fixture block, a second pull rod used for being connected with the hydraulic testing machine is arranged at one end, away from the first fixture block, of the second fixture block, and accommodating cavities are formed in the first fixture block and the second fixture block; opposite end faces of the first clamping block and the second clamping block are provided with through holes, and the through holes are communicated with the accommodating cavity and the outside from the axial direction; the accommodating cavity is communicated with the outside through an opening; the side of the through hole is detachably provided with a stop lever for stopping the opening. The stop rod is arranged at the joint of the through hole and the outside, so that the bolt can be stopped by the stop rod when being ejected; thereby effectively avoiding the condition that the bolt is shot out to cause injury of testing personnel or damage of equipment.

Description

Novel bolt tensile test anchor clamps

Technical Field

The utility model relates to the technical field of bolt tension tests, in particular to a novel bolt tension test clamp.

Background

The performance of the bolts was tested by various instruments, wherein the tensile test was tested by a hydraulic tester. Generally, the bolt is fixed on a clamp of a hydraulic testing machine, and then the reading is stretched through the hydraulic testing machine. The bolt tension test fixture with the publication number of CN107764634A comprises a first fixture block and a second fixture block, wherein a first pull rod and a second pull rod are fixedly connected to the first fixture block and the second fixture block respectively, the first pull rod is used for fixedly connecting the first fixture block and the hydraulic testing machine, and the second pull rod is used for fixedly connecting the second fixture block and the hydraulic testing machine; the first fixture block and the second fixture block are both provided with a T-shaped groove, the width of the bottom end of the T-shaped groove is larger than that of the opening end, the depth direction of the T-shaped groove in the first fixture block is parallel to the axis direction of the first pull rod, and the depth direction of the T-shaped groove in the second fixture block is parallel to the axis direction of the second pull rod.

And one end of the bolt is connected with the nut, the nut and the nut on the bolt are respectively arranged in the two T-shaped grooves, and then the tensile test is carried out. However, since the T-shaped groove is communicated with the outside and is not shielded, the bolt may be separated from the T-shaped groove or ejected during the retension test, thereby easily causing the problem of injury to the tester or damage to the equipment.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a novel bolt tension test fixture, which can solve the problem that a bolt is easy to eject from the fixture to at least a certain extent.

The technical scheme of the utility model is realized as follows:

a novel bolt tension test fixture comprises a first fixture block and a second fixture block which are coaxially arranged, wherein a first pull rod used for being connected with a hydraulic testing machine is arranged at one end, away from the second fixture block, of the first fixture block, a second pull rod used for being connected with the hydraulic testing machine is arranged at one end, away from the first fixture block, of the second fixture block, and accommodating cavities are formed in the first fixture block and the second fixture block; opposite end faces of the first clamping block and the second clamping block are provided with through holes, and the through holes are communicated with the accommodating cavity and the outside from the axial direction; the accommodating cavity is communicated with the outside through an opening; the side of the through hole is detachably provided with a stop lever for stopping the opening.

As a further alternative of the novel bolt tension test fixture, two oppositely arranged clamping strips are arranged on the side surface of the through hole, and the stop lever is slidably arranged on the clamping strips.

As a further alternative of the novel bolt tensile test fixture, the cross section of the clamping strip is in a T shape, a T-shaped groove for inserting the clamping strip is formed in the stop rod, and the clamping strip slides in the T-shaped groove.

As a further alternative of the novel bolt tensile test fixture, a concave hole is concavely formed in the side face of the clamping strip, a telescopic convex block is arranged in a T-shaped groove of the blocking rod, and the convex block is in snap fit with the concave hole, so that the clamping strip and the blocking rod are fixed relatively.

As a further alternative of the novel bolt tensile test fixture, a threaded connection hole is formed in the stop rod, a glass bead screw is arranged in the threaded connection hole, and the glass bead screw comprises a spring, a steel ball and a shell; the convex block is a steel ball in the glass ball screw.

As a further alternative of the novel bolt tensile test clamp, a nut is arranged in one of the accommodating cavities.

The utility model has the following beneficial effects: the stop rod is arranged at the joint of the through hole and the outside, so that the bolt can be stopped by the stop rod when being ejected; thereby effectively avoiding the condition that the bolt is shot out to cause injury of testing personnel or damage of equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a schematic structural view of a novel bolt tension test fixture of the present invention;

FIG. 2 is an exploded view of a novel bolt tension test fixture of the present invention;

FIG. 3 is an exploded view of the locking bar and the stop lever;

fig. 4 is a schematic view of the engagement between the locking strip and the stopper rod.

In the figure: 1. a first clamping block; 11. a first pull rod; 2. a second fixture block; 21. a second pull rod; 3. an accommodating cavity; 4. perforating; 5. an opening; 6. a gear lever; 61. a T-shaped slot; 62. connecting a threaded hole; 63. a glass bead screw; 7. clamping the strip; 71. concave holes; 8. a bolt; 81. a nut; 9. and a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the utility model.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-4, a novel bolt tensile test fixture is shown, which includes a first fixture block 1 and a second fixture block 2 coaxially arranged, a first pull rod 11 for connecting a hydraulic testing machine is arranged at one end of the first fixture block 1 away from the second fixture block 2, a second pull rod 21 for connecting the hydraulic testing machine is arranged at one end of the second fixture block 2 away from the first fixture block 1, and both the first fixture block 1 and the second fixture block 2 are internally provided with accommodating cavities 3; the opposite end surfaces of the first fixture block 1 and the second fixture block 2 are both provided with a through hole 4, and the through hole 4 is axially communicated with the accommodating cavity 3 and the outside; the side surfaces of the accommodating cavity 3 and the through hole 4 are communicated with the outside through an opening 5; the side of the through hole 4 is detachably provided with a stop lever for blocking the opening 5. Wherein, a nut 9 is arranged in one of the accommodating cavities 3.

In other words, with reference to fig. 1 and 2, one end of the bolt 8 to be tested is screwed into the nut 9 in one of the receiving cavities 3, and the nut 81 on the other end of the bolt 8 is placed in the other receiving cavity 3; wherein the body of the bolt 8 is snapped into the through hole 4 through the opening 5; then the stop lever 6 is arranged at the side of the perforation 4, so as to block the opening 5 at the side of the perforation 4; thus, when the bolt 8 is ejected, the bolt is blocked by the stop lever 6; the condition that the bolt 8 is ejected to cause injury of testing personnel or damage of equipment can be effectively avoided.

In some specific embodiments, the stop lever 6 is convenient to be quickly disassembled, so that the bolt 8 can be quickly assembled and disassembled in the through hole 4; referring to fig. 3 and 4, two opposite clamping strips 7 are arranged on the side surface of the through hole 4, and the stop lever 6 is slidably arranged on the clamping strips 7. In other words, the bolt 8 is clamped into the through hole 4 from between the two clamping strips 7; when the bolt 8 needs to be taken out or put in, the blocking rod 6 is pulled to one side along the clamping strips 7, so that the blocking rod 6 moves to one of the clamping strips 7, the opening 5 on the side surface of the through hole 4 is not blocked, and the bolt 8 can be taken out or put in. In contrast, after the bolt 8 is completely installed, the stop lever 6 is pulled along the two clamping strips 7, so that the stop lever 6 is connected with the two clamping strips 7, the opening 5 on the side surface of the through hole 4 is blocked, and the bolt 8 is prevented from being separated.

In the above embodiment, to ensure that the blocking rod 6 can only move relative to the clamping strip 7 in the sliding direction, referring to fig. 4, the section of the clamping strip 7 is T-shaped, a T-shaped groove 61 for inserting the clamping strip 7 is formed in the blocking rod 6, and the clamping strip 7 slides in the T-shaped groove 61. In this way, in the perspective of fig. 4, the blocking lever 6 is prevented from being separated from the locking strip 7 in the vertical direction, and the blocking lever 6 is ensured to stably block the bolt 8 from being ejected.

Above-mentioned scheme is specific, for avoiding shelves pole 6 can remove on the slip direction at will, the concave hole 71 that is equipped with on the side of card strip 7, be equipped with the telescopic lug in the T-slot 61 of shelves pole 6, the lug with concave hole 71 snap-fit to the realization card strip 7 with the relative fixation of shelves pole 6. Thus, when the projection is clamped into the concave hole 71, the clamping strip 7 and the stop lever 6 are relatively fixed; when the projection is separated from the concave hole 71, the clamping strip 7 and the stop lever 6 can slide relatively.

Preferably, for convenience of installation, referring to fig. 3 and 4, a threaded connection hole 62 is formed in the stopper rod 6, a bead screw 63 is arranged in the threaded connection hole 62, and the bead screw 63 includes a spring, a steel ball and a housing; the projection is a steel ball in the glass ball screw 63. Specifically, the spring in the bead screw 63 can eject the steel ball out of the housing, and fix the steel ball in the concave hole 71 to a certain extent, so that the clamping strip 7 and the stopper rod 6 are relatively fixed; only when the stopper rod 6 is pushed by a certain external force, the steel ball is extruded by the edge of the concave hole 71, the spring is compressed, the steel ball retracts into the shell and is separated from the concave hole 71, and the stopper rod 6 can slide on the clamping strip 7. In addition, the screwing depth of the glass bead screw 63 in the threaded connecting hole 62 can be adjusted, so that the clamping depth of the steel bead in the concave hole 71 can be adjusted, and the external force required for moving the stop lever 6 can be adjusted. It should be noted that the bead screw is a prior art, and therefore, the principle and structure thereof are not described in detail herein.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (6)

1. A novel bolt tension test fixture comprises a first fixture block and a second fixture block which are coaxially arranged, wherein a first pull rod used for being connected with a hydraulic testing machine is arranged at one end, away from the second fixture block, of the first fixture block, and a second pull rod used for being connected with the hydraulic testing machine is arranged at one end, away from the first fixture block, of the second fixture block; opposite end faces of the first clamping block and the second clamping block are provided with through holes, and the through holes are communicated with the accommodating cavity and the outside from the axial direction; the accommodating cavity is communicated with the outside through an opening; the side of the through hole is detachably provided with a stop lever for stopping the opening.

2. The novel bolt tension test clamp as claimed in claim 1, wherein two opposite clamping strips are arranged on the side of the through hole, and the stop lever is slidably arranged on the clamping strips.

3. The novel bolt tension test clamp according to claim 2, wherein the cross section of the clamping strip is T-shaped, a T-shaped groove for inserting the clamping strip is formed in the stop rod, and the clamping strip slides in the T-shaped groove.

4. The novel bolt tension test fixture according to claim 3, wherein a concave hole is concavely formed on a side surface of the clamping strip, a telescopic projection is arranged in the T-shaped groove of the stopper rod, and the projection is in snap fit with the concave hole, so that the clamping strip and the stopper rod are relatively fixed.

5. The novel bolt tension test clamp as claimed in claim 4, wherein the stop rod is provided with a threaded connection hole, a bead screw is arranged in the threaded connection hole, and the bead screw comprises a spring, a steel ball and a shell; the convex block is a steel ball in the glass ball screw.

6. The novel bolt tension test clamp according to claim 1, wherein a nut is arranged in one of the accommodating cavities.

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