CN216718009U - Bolt tensile load test tool - Google Patents

Abstract

The utility model discloses a tensile load test tool for a bolt, and relates to the technical field of load tests. Has the following beneficial effects: according to the technical scheme provided by the utility model, the outer sleeve and the inner sleeve are clamped, the bolt is accommodated in the inner sleeve, the outer sleeve and the inner sleeve can be flexibly assembled and disassembled, the assembly and disassembly are time-saving and labor-saving, and the test efficiency is improved; furthermore, the influence of the deformation of the inner sleeve on the outer sleeve is small during the test, the inner sleeve is convenient and quick to replace, the whole device does not need to be replaced, the cost is saved, and the test efficiency can be improved.

Description

Bolt tensile load test tool

Technical Field

The utility model relates to the technical field of load tests, in particular to a tensile load test tool for a bolt.

Background

The standard bolt has the advantages of simple structure, high quality, low price and the like, is widely applied to various industries, and needs to sample and detect the tensile strength of the bolt in order to ensure the safety of the bolt in the use process. The existing bolt tensile test device generally adopts the integral design to improve the integral structural strength and prolong the service life. But the bolt can receive very big effort when tensile test, can warp even the card in testing arrangement, and the loading and unloading is wasted time, hard, has leaded to the problem that efficiency of software testing is low.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Aiming at the technical problems of time and labor waste in assembling and disassembling of the conventional testing device, the utility model provides a bolt tensile load testing tool which is time-saving and labor-saving in assembling and disassembling and improves the testing efficiency.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

the utility model provides a bolt tensile load test frock, includes the pull rod and the overcoat that are connected, the overcoat joint has the endotheca, the pull rod the overcoat with the endotheca is symmetrical setting in pairs, the inside of overcoat is equipped with and is used for holding the space of endotheca, the inner wall of overcoat is equipped with the draw-in groove, the outside of endotheca be equipped with draw-in groove complex buckle, the inside of endotheca is equipped with the through-hole that is used for holding the bolt.

Optionally, a first protrusion and a second protrusion are arranged beside the clamping groove.

Optionally, the pull rod is connected with a clamp, and the side surface of the pull rod is provided with grains.

Optionally, the inner sleeve comprises a first inner sleeve and a second inner sleeve, the first inner sleeve and the second inner sleeve are symmetrically arranged, and the through hole is provided with a variable cross section for clamping the bolt.

Optionally, two sides of the first inner sleeve are provided with first buckles matched with the clamping grooves, and two sides of the second inner sleeve are provided with second buckles matched with the clamping grooves.

Optionally, a step is arranged at the variable cross section of the first inner sleeve.

Optionally, the cross section of the clamping groove is trapezoidal, the cross section of the buckle is inverted trapezoidal, the clamping groove and the buckle are in sliding fit, and the sliding direction is perpendicular to the axial direction of the bolt.

Optionally, the pull rod and the outer sleeve are in threaded connection.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the technical scheme provided by the utility model, the outer sleeve and the inner sleeve are clamped, the bolt is accommodated in the inner sleeve, the outer sleeve and the inner sleeve can be flexibly assembled and disassembled, the assembly and disassembly are time-saving and labor-saving, and the test efficiency is improved; furthermore, the influence of the deformation of the inner sleeve on the outer sleeve is small during the test, the inner sleeve is convenient and quick to replace, the whole device does not need to be replaced, the cost is saved, and the test efficiency can be improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a bolt tensile load test tool according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a pull rod and an outer sleeve of a bolt tensile load test tool according to an embodiment of the present invention.

Fig. 3 is a left side view of a first inner sleeve of a bolt tensile load test tool according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a first inner sleeve of a bolt tensile load test tool according to an embodiment of the utility model.

Fig. 5 is a cross-sectional view of a second inner sleeve of a bolt tensile load test tool according to an embodiment of the utility model.

1. A pull rod; 2. a jacket; 3. a card slot; 4. a first protrusion; 5. a second protrusion; 6. a first inner sleeve; 61. a first buckle; 7. a second inner sleeve; 71. a second buckle; 8. a clamp; 9. and (4) bolts.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Examples

With reference to the accompanying drawings 1-5, the tensile load test tool for the bolt comprises a pull rod 1 and an outer sleeve 2 which are connected, wherein the outer sleeve 2 is connected with an inner sleeve in a clamping mode, the pull rod 1, the outer sleeve 2 and the inner sleeve are symmetrically arranged in pairs, a space for accommodating the inner sleeve is arranged inside the outer sleeve 2, a clamping groove 3 is formed in the inner wall of the outer sleeve 2, a buckle matched with the clamping groove 3 is arranged outside the inner sleeve, and a through hole for accommodating the bolt 9 is formed inside the inner sleeve.

The testing device comprises a plurality of components, such as a pull rod 1, an outer sleeve 2 and an inner sleeve, so that the mounting by workers is facilitated, the weight of the fragmentary components is not large, and the manual mounting and dismounting by the workers are more convenient; secondly, in order to reduce the part that needs to be changed because of the device deformation after the experiment, practice thrift the cost. The part directly contacting with the bolt 9 after the tensile load test of the bolt 9 deforms, and other parts of the device do not deform or slightly deform and can be used. The pull rod 1, the outer sleeve 2 and the inner sleeve are arranged in pairs, the pull rod 1, the outer sleeve 2 and the inner sleeve are symmetrically arranged during testing, and two ends of a bolt 9 are connected to the inner sleeve. The outer sleeve 2 and the inner sleeve are clamped in a matched mode, so that the strength requirement is met, the inner sleeve is convenient to assemble and disassemble, and the test efficiency is improved.

And a first bulge 4 and a second bulge 5 are arranged beside the clamping groove 3. The clamping groove 3 is matched with the buckle of the inner sleeve, if the first bulge 4 and the second bulge 5 are not arranged, the clamping groove 3 is positioned in the inner wall of the outer sleeve 2, when the outer sleeve 2 deforms in the test process, the side surface of the outer sleeve 2 directly bears the acting force of the inner sleeve, and the whole outer sleeve 2 deforms and can only be replaced; after setting up first arch 4 and second arch 5, the root of first arch 4 and second arch 5 becomes stress concentration point, and first arch 4 and second arch 5 will warp when taking place to warp in the test process, and protective outer cover 2.

The pull rod 1 is connected with a clamp 8, and the side surface of the pull rod 1 is provided with grains. Anchor clamps 8 are connected in the actuating mechanism of testing machine, and the line of 1 side of pull rod is favorable to improving the frictional force of pull rod 1 and anchor clamps 8, prevents to skid.

The inner sleeve comprises a first inner sleeve 6 and a second inner sleeve 7, the first inner sleeve 6 and the second inner sleeve 7 are symmetrically arranged, and the through hole is provided with a variable cross section for clamping the bolt 9. The bolt 9 is composed of a head part and a screw rod, the diameter of the head part is larger generally, so that the bolt 9 is clamped by the designed variable cross section, the end of the screw rod is connected with a nut in a threaded mode, and the variable cross section can be clamped with the nut to form a structure that the bolt 9 is pulled at two ends.

And first buckles 61 matched with the clamping grooves 3 are arranged on two sides of the first inner sleeve 6, and second buckles 71 matched with the clamping grooves 3 are arranged on two sides of the second inner sleeve 7.

The variable cross section of the first inner sleeve 6 is provided with a step. The lower part of the head of some bolts 9 is provided with an annular bulge, the step is used for being matched with the bulge, the contact area of the bolts 9 and the inner sleeve is increased, the pressure intensity of the bolts 9 is reduced, and the accuracy of the test is improved.

The cross section of the clamping groove 3 is trapezoidal, the cross section of the buckle is inverted trapezoidal, the clamping groove 3 and the buckle are in sliding fit, and the sliding direction is perpendicular to the axial direction of the bolt 9. As shown in fig. 1, the inner sleeve is limited in the vertical direction by the clamping grooves 3 and the buckles which are matched in a trapezoidal manner, and is not limited in the horizontal direction, so that a worker can conveniently take out the inner sleeve in the horizontal direction.

The pull rod 1 is in threaded connection with the outer sleeve 2. Threaded connection is convenient to assemble and disassemble, other installation components are not needed, and raw material cost is saved.

The working principle is as follows:

inserting a screw rod of a bolt 9 into the first inner sleeve 6, inserting the second inner sleeve 7 after the screw rod extends out of the first inner sleeve 6, arranging the first inner sleeve 6 and the second inner sleeve 7 oppositely as shown in figure 1, screwing the bolt 9 and a nut in the second inner sleeve 7, clamping the first inner sleeve 6 and the second inner sleeve 7 on the outer sleeve 2, screwing the pull rod 1 into the outer sleeve 2, clamping the pull rod 1 by using a clamp 8, placing the pull rod on a testing machine, and applying a tensile force by using the testing machine to perform a tensile test on the bolt 9.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (8)

1. The utility model provides a bolt tensile load test frock, its characterized in that, is including the pull rod and the overcoat that are connected, the overcoat joint has the endotheca, the pull rod the overcoat with the endotheca is symmetrical setting in pairs, the inside of overcoat is equipped with and is used for holding the space of endotheca, the inner wall of overcoat is equipped with the draw-in groove, the outside of endotheca be equipped with draw-in groove complex buckle, the inside of endotheca is equipped with the through-hole that is used for holding the bolt.

2. The bolt tensile load test tool according to claim 1, wherein a first protrusion and a second protrusion are arranged beside the clamping groove.

3. The bolt tensile load test tool according to claim 1, wherein the pull rod is connected with a clamp, and the side surface of the pull rod is provided with grains.

4. The bolt tensile load test tool according to claim 1, wherein the inner sleeves comprise a first inner sleeve and a second inner sleeve, the first inner sleeve and the second inner sleeve are symmetrically arranged, and the through hole is provided with a variable cross section for clamping the bolt.

5. The tooling for the tensile load test of the bolt according to claim 4, wherein first buckles matched with the clamping grooves are arranged on two sides of the first inner sleeve, and second buckles matched with the clamping grooves are arranged on two sides of the second inner sleeve.

6. The tooling for the tensile load test of the bolt according to claim 4, wherein the variable cross section of the first inner sleeve is provided with a step.

7. The bolt tensile load test tool according to claim 1, wherein the cross section of the clamping groove is trapezoidal, the cross section of the buckle is inverted trapezoidal, the clamping groove and the buckle are in sliding fit, and the sliding direction is perpendicular to the axial direction of the bolt.

8. The bolt tensile load test tool according to any one of claims 1 to 7, wherein the pull rod is in threaded connection with the outer sleeve.

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