CN218003109U

CN218003109U - Multi-angle unilateral bolt group test device

Info

Publication number: CN218003109U
Application number: CN202221839952.9U
Authority: CN
Inventors: 侯超; 虞振波
Original assignee: Southern University of Science and Technology
Current assignee: Southern University of Science and Technology
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-09
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a unilateral bolt crowd test device of multi-angle, wherein, include: the device comprises a mounting assembly, a supporting frame and a stretching assembly; the two mounting assemblies are oppositely arranged, and the steel pipe concrete is placed in the mounting assemblies; at least one support frame is arranged on the mounting assembly; the plurality of stretching assemblies are located in the circumferential direction of the concrete filled steel tube, at least one stretching assembly is arranged on the supporting frame, and installation included angles are formed between the stretching assemblies arranged on the supporting frame and other stretching assemblies in the circumferential direction of the concrete filled steel tube. Through setting up a plurality of tension assembly in the week of steel pipe concrete to be connected with the test bolt in the steel pipe concrete, and at least one tension assembly sets up on the support frame, thereby makes tension assembly have a plurality of installation contained angles each other, and then found out the required contained angle position of bolt crowd tensile test. The utility model discloses can realize the unilateral bolt crowd tensile test of multi-angle, and can dismantle, pass power clear and definite, the preparation is simple and convenient.

Description

Multi-angle unilateral bolt group test device

Technical Field

The utility model relates to a civil engineering technical field, in particular to unilateral bolt crowd test device of multi-angle.

Background

The steel pipe concrete structure can fully utilize the constraint effect among materials, realizes the cooperative complementation and the joint work, has the advantages of high strength, good ductility, convenient construction and the like, is widely applied to the urbanization construction, and when the steel pipe concrete structure is used as a chord member in a truss or tower structure, various pipe joints are formed by intersecting welding with hollow steel pipe web members, the welded steel pipe concrete joints form an irreversible whole, and the repeated use and the disassembly of the members face the challenge. As a novel fastener, the unilateral bolt has the advantages of unilateral screwing, reliable stress performance, convenient construction and the like, can solve the problem that the common high-strength bolt is difficult to be applied to construction and installation of a closed-section component, and simultaneously provides feasibility for the transformation of a welding combined structure to a detachable combined structure. When the unilateral bolt group is adopted in the concrete filled steel tube, the traditional welding part can be replaced by a bolt connection mode to avoid damaging the component members of the concrete filled steel tube structure in the disassembly process so as to achieve the purpose of structural disassembly.

At present, the research on the basic mechanical properties of single-side bolts in concrete filled steel tubes mainly focuses on the tensile properties of single-side bolts, and the research on the tensile property test of single-side bolt groups with different included angles is lacked; the main reason is that a tensile property test device suitable for unilateral bolt groups with different included angles is lacked.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art's weak point, an object of the utility model is to provide a unilateral bolt crowd test device of multi-angle aims at solving the problem that lacks the tensile properties test device who is suitable for the unilateral bolt crowd of different contained angles among the prior art.

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

in a first aspect, the embodiment of the utility model provides a unilateral bolt crowd test device of multi-angle, wherein, include:

the two mounting assemblies are oppositely arranged, and the steel pipe concrete is placed in the mounting assemblies;

the supporting frames are arranged on the mounting assembly;

the stretching assemblies are positioned in the circumferential direction of the concrete filled steel tube and are connected with the test bolts in the concrete filled steel tube;

at least one stretching assembly is arranged on the support frame, and an installation included angle is formed between the stretching assembly arranged on the support frame and other stretching assemblies in the circumferential direction of the concrete filled steel tube.

As a further improved technical solution, in the multi-angle unilateral bolt group testing device, the mounting assembly includes:

the steel pipe concrete support comprises a support frame and a stop block, wherein the support frame is provided with a first connecting surface and a second connecting surface which are inclined to the horizontal direction, the first connecting surface and the second connecting surface are connected in an angle mode, and the stop block is connected with the support frame through the first connecting surface or the second connecting surface;

the cushion block is arranged on the top surface of the stop block, the side surface of the cushion block, which deviates from the stop block, is a fixed surface, and the cushion block is connected with the support frame through the fixed surface.

As a further improved technical scheme, in the multi-angle unilateral bolt group testing device, the number of the cushion blocks is one,

the included angle between the first connecting surface and the horizontal direction is equal to the included angle between the fixed surface and the horizontal direction, and the first connecting surface and the fixed surface are respectively connected with the supporting frame.

As a further improved technical scheme, in the multi-angle unilateral bolt group test device, the number of the cushion blocks is two, and the two cushion blocks are symmetrically arranged on the top surface of the stop block;

the second is connected the face and the contained angle of horizontal direction with the contained angle of stationary plane and horizontal direction equals, the second connect the face with the stationary plane respectively with the support frame is connected.

As a further improvement technical scheme, in the unilateral bolt crowd test device of multi-angle, the support frame includes:

one side of the first cross beam is connected with the fixing surface, and the other side of the first cross beam is connected with the stretching assembly;

the second cross beam is arranged opposite to the first cross beam and is connected with the first connecting surface or the second connecting surface;

a connecting bolt connected between the first and second cross beams.

As a further improved technical solution, in the multi-angle unilateral bolt group testing apparatus, the stretching assembly includes:

the displacement meter base plate is arranged on one end, away from the concrete filled steel tube, of the test bolt;

the bolt sleeve is arranged on one end, away from the concrete filled steel tube, of the test bolt and is abutted against the displacement meter base plate;

the displacement meter fixing plate is arranged at one end, away from the test bolt, of the bolt sleeve, and a displacement meter fixing groove is formed in the displacement meter fixing plate;

the displacement meter is arranged on the displacement meter fixing plate through the displacement meter fixing groove;

the displacement meter clamp is arranged on the displacement meter fixing plate and is detachably connected with the displacement meter;

one end of the extension screw rod penetrates through the displacement meter fixing plate and is connected with one end, away from the test bolt, of the bolt sleeve;

the hydraulic actuator, hydraulic actuator with the other end swing joint of extension screw rod, just hydraulic actuator still be used for with first crossbeam and second crossbeam are connected.

As a further improvement technical scheme, in the unilateral bolt crowd test device of multi-angle, the displacement meter anchor clamps include:

the clamping device comprises a first clamping block, a second clamping block and a fixing bolt;

the first clamping block and the second clamping block are arranged on the displacement meter fixing plate and clamped on two side faces of the displacement meter, and the fixing bolt is connected with the first clamping block and the second clamping block.

As a further improved technical scheme, in the multi-angle unilateral bolt group testing device, an included angle between the first connecting surface and the horizontal direction is 30 °.

As a further improved technical scheme, in the multi-angle unilateral bolt group testing device, an included angle between the second connecting surface and the horizontal direction is 45 degrees.

The utility model discloses the technical scheme who adopts has following beneficial effect:

the utility model arranges the two mounting components oppositely, and then places the concrete-filled steel tube inside the mounting components, and further arranges at least one supporting frame on the mounting components; the tensile assemblies are arranged on the periphery of the concrete filled steel tube and connected with test bolts in the concrete filled steel tube, at least one tensile assembly is arranged on the support frame, and installation included angles are formed between the tensile assembly arranged on the support frame and other tensile assemblies on the periphery of the concrete filled steel tube. Therefore, a plurality of installation included angles are formed among the plurality of stretching assemblies, the included angle position required by the bolt group stretching test is further constructed, and the requirement of the stretching test of the unilateral bolt group with different included angles is met. The embodiment of the utility model provides an in unilateral bolt crowd test device of multi-angle can realize the unilateral bolt crowd tensile test of multi-angle, and can dismantle, pass power clear and definite, the preparation is simple and convenient, economic nature is good.

Drawings

FIG. 1 is a perspective view of a first implementation structure of a multi-angle unilateral bolt group testing device provided by the present invention;

FIG. 2 is a front view of a first implementation structure of a multi-angle unilateral bolt group testing device provided by the present invention;

FIG. 3 is a top view of a first implementation structure of a multi-angle unilateral bolt group testing apparatus provided by the present invention;

fig. 4 is a left side view of a first implementation structure of the multi-angle unilateral bolt group testing device provided by the present invention;

FIG. 5 is a perspective view of a stop block in the multi-angle single-sided bolt group testing apparatus provided by the present invention;

FIG. 6 is a front view of a stop block in the multi-angle unilateral bolt group testing device provided by the present invention;

FIG. 7 is a left side view of a stop block in the multi-angle unilateral bolt group testing device provided by the present invention;

FIG. 8 is a perspective view of the multi-angle single-sided bolt group testing apparatus according to the present invention when the stretching assembly is connected to the concrete filled steel tube;

FIG. 9 is an enlarged view at A in FIG. 8;

FIG. 10 is a front view of the multi-angle single-sided bolt cluster testing apparatus according to the present invention, illustrating the connection between the tension assembly and the concrete filled steel tube;

FIG. 11 is a perspective view of a second embodiment of the multi-angle single-sided bolt group testing apparatus provided by the present invention;

fig. 12 is a front view of a second implementation structure of the multi-angle unilateral bolt group testing device provided by the present invention;

fig. 13 is a top view of a second implementation structure of the multi-angle unilateral bolt group testing apparatus provided by the present invention;

fig. 14 is a left side view of a second implementation structure of the multi-angle unilateral bolt group testing device provided by the present invention.

Reference numerals: 100. mounting the component; 200. a support frame; 300. a stretching assembly; 10. concrete-filled steel tubes; 20. testing the bolt; 110. a stopper; 120. a cushion block; 111. mounting holes; 101. a first connection face; 102. a second connection face; 121. a fixed surface; 210. a first cross member; 220. a second cross member; 230. a connecting bolt; 310. a displacement gauge backing plate; 320. a bolt bushing; 330. a displacement meter fixing plate; 340. a displacement meter; 350. a displacement gauge clamp; 360. an extension screw 370, a hydraulic actuator; 351. a first clamping block; 352. second clamp block 353, fixing bolt.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be further noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc., indicating directions or positional relationships based on those shown in the drawings, it is only for convenience of description and simplicity of description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed in a specific direction, and operate, and therefore, the terms describing the positional relationships in the drawings are used only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the prior art, the research on the basic mechanical properties of the unilateral bolts in the concrete filled steel tube mainly focuses on the tensile properties of single unilateral bolts, and the tensile property test research among unilateral bolts with different included angles is lacked, and the main reason is that a tensile property test device suitable for unilateral bolt groups with different included angles is lacked.

Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.

The utility model discloses a unilateral bolt crowd test device of multi-angle please refer to fig. 1 to 4. The utility model discloses a unilateral bolt crowd test device of multi-angle specifically includes: mounting assembly 100, support bracket 200 and tension assembly 300; the two mounting assemblies 100 are arranged oppositely, and concrete-filled steel tubes are placed in the mounting assemblies 100, optionally, the number of the mounting assemblies 100 is two, the two mounting assemblies 100 are of symmetrical structures, are arranged at intervals and are positioned on the same straight line, and are used for bearing the concrete-filled steel tubes 10, and a plurality of test bolts 20 are arranged in the concrete-filled steel tubes 10 to form a whole bolt group; the cross section of the concrete-filled steel tube 10 is rectangular, circular or elliptical; the steel pipe in the concrete-filled steel pipe 10 is made of common steel, high-strength steel or stainless steel, and the concrete in the concrete-filled steel pipe 10 is made of common concrete or high-strength concrete; the strength ratings of the test bolts 20 were 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9 (i.e., the steel structural connection bolt performance ratings).

Further, at least one support frame 200 is disposed on the mounting assembly 100, optionally, the support frame 200 is inclined to the horizontal direction; further, a plurality of the tension assemblies 300 are located at the circumference of the concrete filled steel tube 10 and connected with the test bolts 20 in the concrete filled steel tube 10; at least one tensile assembly 300 is arranged on the support frame 200, and an installation included angle is formed between the tensile assembly 300 arranged on the support frame 200 and other tensile assemblies in the circumferential direction of the concrete filled steel tube 10.

Specifically, the supporting frames 200 mainly play a role of supporting the stretching assemblies 300, are arranged above the mounting assembly 100 and are detachably connected with the mounting assembly 100, and the number of the supporting frames 200 is the same as the number of the stretching assemblies 300 which need to be connected with the concrete filled steel tube 10 through the supporting frames 200. The stretching assembly 300 is mainly used for performing a stretching test on the test bolt 20, and an installation included angle is formed between the stretching assembly 300 arranged on the support frame 200 and other stretching assemblies in the circumferential direction of the concrete filled steel tube 10, and optionally, the value range of the installation included angle is 45 °, 60 °, 90 °, 135 ° or 150 °.

The concrete theory of operation of the unilateral bolt crowd test device of multi-angle that this embodiment provided is as follows:

arranging the two installation components 100 on the same straight line, arranging the concrete-filled steel tube 10 in the installation components 100, and arranging a support frame 200 on the installation components 100, wherein the support frame 200 is inclined to the horizontal direction; set up two tensile module 300 in the circumference of steel pipe concrete 10 to correspond and be connected with the test bolt 20 in the steel pipe concrete 10, one of them tensile module 300 sets up on the support frame 200, another tensile module 300 sets up in the horizontal direction of concrete or other circumferences of concrete, because support frame 200 is the tilt state with the horizontal direction, consequently the tensile module 300 of installing on the support frame 200 and the tensile module 300 on the concrete horizontal direction or the tensile module 300 on other circumferences of concrete exist the installation contained angle, and then constructed the required contained angle position of bolt crowd tensile test, realized the unilateral bolt crowd tensile test requirement of different contained angles with this.

The unilateral bolt crowd test device of multi-angle that this embodiment provided's beneficial effect lies in at least:

the embodiment of the utility model provides an in unilateral bolt crowd test device of multi-angle can realize the unilateral bolt crowd tensile test of multi-angle, carries out tensile test to the test bolt 20 of different angles, and test device can dismantle, pass power clear and definite, the preparation is simple and convenient, economic nature is good.

As a further alternative, referring to fig. 1 and 5, the mounting assembly 100 includes: a stopper 110 and a spacer 120; the concrete filled steel tube 10 is arranged in the block 110, mounting holes 111 for placing the concrete filled steel tube 10 are formed in two symmetrical side surfaces of the block 110, a first connecting surface 101 and a second connecting surface 102 which are inclined to the horizontal direction are arranged on the two symmetrical side surfaces of the block 110, the first connecting surface 101 and the second connecting surface 102 are connected in an angle mode, an included angle alpha between the first connecting surface 101 and the horizontal plane is different from an included angle beta between the second connecting surface 102 and the horizontal plane, and the block 110 is connected with the support frame 200 through the first connecting surface 101 or the second connecting surface 102; at least one cushion block 120 is disposed on the top surface of the stopper 110, a side surface of the cushion block 120 away from the stopper 110 is a fixing surface 121, and the cushion block 120 is connected to the supporting frame 200 through the fixing surface 121.

In the embodiment of the present invention, please refer to fig. 5 to 7, the stopper 110 is a symmetrical structure, the stopper 110 is made of steel, the inner surface of the stopper 110 is provided with a mounting hole 111, the mounting hole 111 is a semi-circular arc surface, and the radius of the semi-circular arc surface is equal to the diameter of the concrete filled steel tube 10; the top surface of the stopper 110 is a plane and parallel to the horizontal direction, two different inclined planes, i.e., a first connection surface 101 and a second connection surface 102, are formed on the outer surface of the stopper 110, the first connection surface 101 is connected to the top surface of the stopper 110, and the second connection surface 102 is connected to the first connection surface 101. In addition, the cushion block 120 is a wedge-shaped cushion block 120, which is also made of steel, optionally, the cross section of the cushion block 120 may be an isosceles triangle, and it should be noted that, in actual use, the cushion block 120 with a corresponding angle may be manufactured according to the difference of the included angles between the test bolts 20, so as to achieve the purpose of the test. The included angle α between the first connecting surface 101 and the horizontal direction is 30 °, the included angle β between the second connecting surface 102 and the horizontal direction is 45 °, and the included angle between the fixing surface 121 and the horizontal direction is equal to the included angle α between the first connecting surface 101 and the horizontal direction or the included angle β between the second connecting surface 102 and the horizontal direction.

In practical use, since the number of the spacers 120 is more than one, and the included angle between the first connecting surface 101 and the second connecting surface 102 and the horizontal direction is fixed, the connecting surface between the stopper 110 and the supporting frame 200 can be changed while the number of the spacers 120 is changed. Similarly, the angle between the entire support frame 200 and the horizontal direction can be changed by changing the number of the spacers 120 and changing the connection surface between the stopper 110 and the support frame 200.

In some embodiments, referring to fig. 1 and 5, the number of the spacers 120 is one, the included angle α between the first connecting surface 101 and the horizontal direction is equal to the included angle between the fixing surface 121 and the horizontal direction, and the first connecting surface 101 and the fixing surface 121 are respectively connected to the supporting frame 200.

Specifically, the included angle α between the first connecting surface 101 and the horizontal direction and the included angle between the fixing surface 121 and the horizontal direction are both 30 °, so that the plane formed by the first connecting surface 101 and the fixing surface 121 can be better connected with the support frame 200, and it can be obtained that the included angle between the support frame 200 disposed on the first connecting surface 101 and the fixing surface 121 and the horizontal direction is 60 °, that is, the included angle between the stretching assembly 300 disposed on the support frame 200 and the stretching assembly 300 disposed on the horizontal direction is 60 °, so as to implement the bolt stretching tests at two different angles.

In other embodiments, referring to fig. 5, 11 to 14, the number of the spacers 120 is two, and the two spacers 120 are symmetrically disposed on the top surface of the stopper 110. The included angle β between the second connecting surface 102 and the horizontal direction is equal to the included angle between the fixing surface 121 and the horizontal direction, and the second connecting surface 102 and the fixing surface 121 are respectively connected to the supporting frame 200.

Specifically, an included angle β between the second connection surface 102 and the horizontal direction is 45 °, and an included angle between the fixing surface 121 on the two pads 120 and the horizontal direction is also 45 °, so that a plane formed by the second connection surface 102 and the fixing surface 121 can be better connected to the support frame 200, and it can be obtained that an included angle between the support frame 200 disposed on the second connection surface 102 and the fixing surface 121 and the horizontal direction is 45 °, that is, an included angle between the stretching assembly 300 disposed on the support frame 200 and the stretching assembly 300 disposed on the horizontal direction is 45 °, so as to implement two bolt stretching tests at different angles.

Therefore, different installation angles, namely, the angle (45 °, 60 °, 90 °, 135 ° or 150 °) required by the bolt group tensile test are established between the tensile assembly 300 and other tensile assemblies in the circumferential direction of the concrete filled steel tube by the first connection surface 101 or the second connection surface 102 in the stopper 110 in cooperation with the different numbers and angles of the cushion blocks 120 and the support frame 200.

As a further alternative, with continued reference to fig. 1, the support stand 200 includes: a first cross member 210, a second cross member 220, and a connecting bolt 230; the first beam 210 and the second beam 220 are symmetrical structures, and mainly play a role of erecting the stretching assembly 300, so that the stretching assembly 300 erected on the support frame 200, the stretching assembly 300 in the horizontal direction or the stretching assemblies 300 in other circumferential directions, namely the first beam 210 and the second beam 220 are all cold-formed equilateral channel steel. One side of the first beam 210 is connected to the fixing surface 121, and the other side of the first beam 210 is connected to the stretching assembly 300; the second cross beam 220 is symmetrically arranged with the first cross beam 210, so as to better play a role of stabilizing the stretching assembly 300, the second cross beam 220 is connected with the first connecting surface 101 or connected with the second connecting surface 102, when one cushion block 120 is arranged, and the included angle between the first connecting surface 101 and the horizontal direction and the included angle between the fixing surface 121 and the horizontal direction are both 30 degrees, then the second cross beam 220 is connected with the first connecting surface 101, and when two cushion blocks 120 are arranged, and the included angle between the second connecting surface 102 and the horizontal direction and the included angle between the fixing surface 121 and the horizontal direction are 45 degrees, then the second cross beam 220 is connected with the second connecting surface 102; the connecting bolt 230 is connected between the first beam 210 and the second beam 220, so that the first beam 210 and the second beam 220 are well fixed and are not easy to fall off.

As a further aspect, referring to fig. 1, 8-10, the stretching assembly 300 includes: a displacement meter base plate 310, a bolt sleeve 320, a displacement meter fixing plate 330, a displacement meter 340, a displacement meter clamp 350, an extension screw 360 and a hydraulic actuator 370;

the displacement meter base plate 310 is arranged at one end of the test bolt 20, which is far away from the concrete filled steel tube 10, and plays a role in increasing the contact area, reducing the pressure and protecting the test bolt 20 and the bolt sleeve 320; the bolt sleeve 320 is arranged at one end of the test bolt 20, which is far away from the concrete filled steel tube 10, the end part of the test bolt 20 is connected (e.g. in threaded connection) with the inner wall of the bolt sleeve 320, and the bolt sleeve 320 is abutted against the displacement gauge backing plate 310; the displacement meter fixing plate 330 is disposed at an end of the bolt sleeve 320 away from the test bolt 20, and a displacement meter fixing groove (the displacement meter 340 is already installed in the displacement meter fixing groove, which is not numbered in the figure) is disposed on the displacement meter fixing plate 330, and the displacement meter fixing plate 330 plays the same role as the displacement meter base plate 310, and mainly plays a role of fixing and supporting the displacement meter 340 through the displacement meter fixing groove; the displacement gauge 340 is arranged on the displacement gauge fixing plate 330 through the displacement gauge fixing groove and is used for testing the relative displacement between the test bolt 20 and the concrete filled steel tube 10 to obtain a load displacement curve of the concrete filled steel tube 10, so as to judge the strength of the bolt; alternatively, the displacement meters 340 are displacement sensors (LVDT), the number of the displacement meters 340 may be multiple, for example, four or six, and the specific number of the displacement meters 340 may be set according to requirements.

Further, the displacement meter clamp 350 is disposed on the displacement meter fixing plate 330 and detachably connected to the displacement meter 340, and the displacement meter clamp 350 effectively clamps the displacement meter 340 to prevent the displacement meter 340 from falling off from the displacement meter fixing plate 330, and further fixes the displacement meter 340; one end of the extension screw 360 penetrates through the displacement meter fixing plate 330 and is connected with one end of the bolt sleeve 320, which is far away from the test bolt 20, the extension screw 360 is a high-strength screw, the diameter and the thread pitch of the extension screw are consistent with those of the test bolt 20, and the strength of the extension screw is greater than that of the test bolt 20, so that the yield failure of the test bolt 20 is ensured before the yield failure of the extension screw 360 in the test loading; for example, the strength of the test bolt 20 is not higher than 10.9, and the strength of the corresponding extension screw 360 is 12.9. In terms of material quality, 10.9-grade common 40Cr, 35CrMo and 42CrMo; 35CrMo and 42CrMo are used for 12.9-grade bolts. In practical use, the material of the extension screw 360 can be selected from 35# steel or other high-quality materials, and heat treatment is performed after the extension screw is manufactured, so that the strength can be improved, and the bearable load is larger than that of a common bolt with the same specification.

Still further, please continue to refer to fig. 1, the hydraulic actuator 370 is movably connected to the other end of the extension screw 360, and the hydraulic actuator 370 is further configured to be connected to the first beam 210 and the second beam 220, in actual use, the hydraulic actuator 370 is a standardized actively controlled force applying device, the extension screw 360 pulls the test bolt 20 until the test bolt 20 is broken, the test bolt can be selected with a specified stroke and a specified range, and in addition, a standardized bolt clamp is configured according to the diameter of the extension screw 360, it should be understood that the hydraulic actuator 370 is an existing device, and therefore, the present invention does not provide any description on the specific model and structure of the hydraulic actuator 370.

It should be noted that, the utility model discloses it is right the concrete test process of the unilateral bolt crowd test device of multi-angle does not do detailed description.

As a further alternative, referring to fig. 9, the displacement gauge fixture 350 includes: a first clamping block 351, a second clamping block 352, and a fixing bolt 353; the first clamping block 351 and the second clamping block 352 are of symmetrical structures, the first clamping block 351 and the second clamping block 352 are arranged on the displacement meter fixing plate 330 and clamped on two side faces of the displacement meter 340, the side faces of the first clamping block 351 and the second clamping block 352 facing the displacement meter 340 are matched with the outer surface shape of the displacement meter 340, the displacement meter 340 can be better clamped and fixed, and the fixing bolt 353 is connected to the first clamping block 351 and the second clamping block 352, so that the first clamping block 351 and the second clamping block 352 are better fixed and are not easy to fall off.

It is right to combine specific use scene below the utility model provides a further description is made to the principle of the unilateral bolt crowd test device of multi-angle:

in the first aspect, the included angle of 60 ° required by the tensile test of the bolt group is taken as an example, that is, the installation included angle between two tensile assemblies is 60 °. The two stoppers 110 are arranged on the same straight line, the concrete filled steel tube 10 is arranged in the mounting hole 111 of the stopper 110, the cushion block 120 is arranged on the top surface of the stopper 110, and the stretching assembly 300 is arranged in the horizontal direction, so that the stretching assembly 300 in the horizontal direction is connected with the test bolt 20 at the corresponding position. The first cross beam 210 is connected with the fixing surface 121, and the second cross beam 220 is connected with the first connecting surface 101, because the included angle between the first connecting surface 101 and the horizontal direction and the included angle between the fixing surface 121 and the horizontal direction are both 30 °, it can be obtained that the included angle between the whole support frame 200 and the horizontal direction is 60 °, and the included angle between the axis of the stretching assembly 300 arranged on the first cross beam 210 and the second cross beam 220 and the horizontal direction is also 60 °, that is, the installation included angle between the stretching assembly 300 on the horizontal direction and the stretching assembly 300 on the support frame 200 is 60 °.

In the second aspect, a 45 ° included angle required by a bolt group tensile test is taken as an example, that is, an installation included angle between two tensile assemblies is 45 °. The two blocks 110 are arranged on the same straight line, the concrete filled steel tube 10 is arranged in the mounting hole 111 of the block 110, the two cushion blocks 120 are arranged on the top surface of the block 110, and the stretching assembly 300 is arranged in the horizontal direction, so that the stretching assembly 300 in the horizontal direction is connected with the test bolt 20 in the corresponding position. The first cross beam 210 is connected with the fixing surface 121, the second cross beam 220 is connected with the second connecting surface 102, because the included angle between the second connecting surface 102 and the horizontal direction and the included angle between the fixing surface 121 and the horizontal direction are both 45 degrees, the included angle between the whole support frame 200 and the horizontal direction can be 45 degrees, the included angle between the axis of the stretching assembly 300 arranged on the first cross beam 210 and the second cross beam 220 and the horizontal direction is also 45 degrees, namely the installation included angle between the stretching assembly 300 on the horizontal direction and the stretching assembly 300 on the support frame 200 is 45 degrees.

To sum up, the utility model provides a unilateral bolt crowd test device of multi-angle, wherein, the unilateral bolt crowd test device of multi-angle includes: the device comprises a mounting assembly, a supporting frame and a stretching assembly; the two mounting assemblies are oppositely arranged, and the steel pipe concrete is placed in the mounting assemblies; at least one support frame is arranged on the mounting component; the plurality of stretching assemblies are positioned in the circumferential direction of the concrete filled steel tube and are connected with the testing bolts in the concrete filled steel tube; wherein, at least one tensile subassembly sets up on the support frame, and has the installation contained angle between the tensile subassembly of setting on the support frame and other tensile subassemblies on the circumference of steel pipe concrete. The utility model arranges the two mounting components oppositely, and then places the concrete-filled steel tube inside the mounting components, and further arranges at least one supporting frame on the mounting components; the tensile assemblies are arranged on the periphery of the concrete-filled steel tube and connected with the testing bolts in the concrete-filled steel tube, and at least one tensile assembly is arranged on the supporting frame, so that a plurality of mounting included angles required by tests are formed among the tensile assemblies, the required included angle positions of the bolt group tensile tests are constructed, and the requirements of the bolt group tensile tests with different included angles are met. The embodiment of the utility model provides an in unilateral bolt crowd test device of multi-angle can realize the unilateral bolt crowd tensile test of multi-angle, has solved the difficult problem that hydraulic actuator is difficult to the slope to arrange, and can dismantle, pass power clear and definite, the preparation is simple and convenient, economic nature is good.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. The utility model provides a unilateral bolt crowd test device of multi-angle which characterized in that includes:

the two mounting assemblies are oppositely arranged, and concrete filled steel tubes are placed in the mounting assemblies;

the supporting frames are arranged on the mounting assembly;

at least one tensile component is arranged on the support frame, and an installation included angle is formed between the tensile component on the support frame and other tensile components on the periphery of the concrete filled steel tube.

2. The multi-angle single-sided bolt group testing apparatus of claim 1, wherein the mounting assembly comprises:

3. The multi-angle single-sided bolt group testing device of claim 2, wherein the number of the cushion blocks is one,

4. The multi-angle unilateral bolt group testing device according to claim 2, wherein the number of the cushion blocks is two, and the two cushion blocks are symmetrically arranged on the top surface of the stop block;

5. The multi-angle single-sided bolt group testing device of claim 2, wherein the support frame comprises:

the second cross beam is symmetrically arranged with the first cross beam and is connected with the first connecting surface or the second connecting surface;

a connecting bolt connected between the first and second cross beams.

6. The multi-angle single-sided bolt group testing apparatus of claim 5, wherein the stretching assembly comprises:

7. The multi-angle single-sided bolt group testing device of claim 6, wherein the displacement gauge clamp comprises:

8. The multi-angle single-sided bolt group testing apparatus as claimed in claim 3, wherein the angle between the first connecting surface and the horizontal direction is 30 °.

9. The multi-angle single-sided bolt group testing device of claim 4, wherein the angle between the second connecting surface and the horizontal direction is 45 °.