CN210476678U

CN210476678U - Adjustable clamp for structural mechanics test

Info

Publication number: CN210476678U
Application number: CN201921106484.2U
Authority: CN
Inventors: 胡梁军; 王芳; 庞巍祥; 吴星钬
Original assignee: Baoye Group Zhejiang Construction Industry Research Institute Co ltd
Current assignee: Baoye Group Zhejiang Construction Industry Research Institute Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-08
Anticipated expiration: 2029-07-16

Abstract

The utility model provides an adjustable clamp for a structural mechanics test, which relates to the technical field of structural mechanics clamps and comprises a clamp body, wherein the clamp body comprises a connecting beam, a first clamping mechanism and a second clamping mechanism which are respectively arranged on the connecting beam; the second clamping mechanism comprises a first clamping arm and a second clamping arm, and the first clamping arm and the second clamping arm are matched with the connecting beam through a sliding adjusting and fastening assembly. The utility model discloses can arm lock one and arm lock two through slide and adjust fastening components support arbitrary adjusting position after-fastening on the tie-beam square steel pipe, this makes it can adapt to not unidimensional test object roof beam or other members, needn't customize front end fastener respectively, consequently can be applicable to different test objects, satisfies different experimental objects and different experimental scheme to the requirement of anchor clamps, the commonality is good. Meanwhile, the relative position relation between the experimental platform beam and the experimental platform beam can be changed, and the technical problems that the traditional clamp is inconvenient to move and complex to operate are solved.

Description

Adjustable clamp for structural mechanics test

Technical Field

The utility model relates to a structural mechanics anchor clamps technical field especially relates to an adjustable anchor clamps for structural mechanics is experimental.

Background

At present, the country popularizes the fabricated building vigorously, and enterprises can relate to the development of structural mechanics tests in the process of promoting research and development. The problems that arise in testing are numerous, including how to restrain the components. This entails the use of a fixture for limiting out-of-plane displacement of the member or system, or for limiting relative displacement of the test subject.

The design and use requirements of the clamp are also strict, because on one hand, the motion track of the object to be realized is influenced, on the other hand, the stress condition of the experimental object is influenced, meanwhile, different test objects and systems require different constraint sizes of the clamp, and the like, which bring new requirements for the applicability of the clamp. At present, no universal clamp exists, and basically all the universal clamps are one component and one matched clamp, so that inconvenience is brought to component installation and structural mechanical tests.

Based on this, the present case has been made.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned defect that exists among the prior art, the utility model provides an adjustable anchor clamps for structural mechanics is experimental can satisfy different subjects and different experimental scheme to the requirement of anchor clamps, and the commonality is good.

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

an adjustable clamp for a structural mechanics test comprises a clamp body, wherein the clamp body comprises a connecting beam, a first clamping mechanism and a second clamping mechanism, and the first clamping mechanism and the second clamping mechanism are respectively arranged on the connecting beam; the second clamping mechanism comprises a first clamping arm and a second clamping arm, and the first clamping arm and the second clamping arm are matched with the connecting beam through a sliding adjusting and fastening assembly.

Furthermore, the sliding adjusting and fastening assembly comprises two adjusting plates which are respectively positioned above and below the connecting beam, the two adjusting plates are connected through a bolt and nut group, and the distance between the two adjusting plates is changed through the adjustment of the bolt and nut group; the tops of the first clamping arm and the second clamping arm are fixedly connected with an adjusting plate of the sliding adjusting fastening assembly located below the connecting beam.

Furthermore, the clamping arm I and the clamping arm II are respectively provided with a clamping plate and a tightness adjusting component, the clamping plates are arranged on the clamping sides of the clamping arms, and the tightness adjusting component comprises a support, a screw rod in threaded fit with one end of the support and an adjusting nut arranged on the screw rod; the other end of the bracket is fixed with the clamping plate; one end of the screw rod props against the clamping arm, and the other end of the screw rod is provided with a handle.

Furthermore, cylindrical rollers are arranged on the first clamping arm and the second clamping arm and are located on the clamping sides of the clamping arms, and two ends of a roller of each cylindrical roller are fixedly connected with the clamping plates.

Furthermore, the first clamping mechanism comprises an upper clamping end, a lower clamping end and a supporting piece positioned between the upper clamping end and the lower clamping end, the supporting piece is fixed with the connecting beam, the upper clamping end comprises an upper connecting plate fixedly connected with the connecting beam, and the upper connecting plate is provided with a limiting, adjusting and fastening assembly; the lower clamping end comprises a lower connecting plate arranged at the bottom of the supporting piece, and the lower connecting plate is provided with a limiting and adjusting fastening assembly.

Furthermore, the upper clamping end further comprises a clamping piece, the clamping piece is mounted at the bottom of the upper connecting plate, and the clamping piece is adjustably connected with the upper connecting plate through a bolt and nut set.

Furthermore, one end of the connecting beam, which is close to the first clamping mechanism, is provided with a counterweight loading mechanism.

Furthermore, the counterweight load mechanism comprises H-shaped steel installed on the connecting beam and a plurality of counterweight steel plates installed on the H-shaped steel, and the number of the counterweight steel plates can be increased or decreased.

Furthermore, one end of the screw rod is provided with a sucker, and the screw rod is propped against the clamping arm through the sucker.

Furthermore, one end of the connecting beam, which is close to the second clamping arm, is provided with a blocking plate, and one ends of the first clamping arm and the second clamping arm, which are far away from the connecting beam, are provided with blocking plates.

The utility model discloses a principle and beneficial effect:

(1) the utility model discloses can arm lock one and arm lock two through slide and adjust fastening components support arbitrary adjusting position after-fastening on the tie-beam square steel pipe, this makes it can adapt to not unidimensional test object roof beam or other members, needn't customize front end fastener respectively, consequently can be applicable to different test objects, satisfies different experimental objects and different experimental scheme to the requirement of anchor clamps, the commonality is good. Meanwhile, the relative position relation between the experimental platform beam and the experimental platform beam can be changed, and the technical problems that the traditional clamp is inconvenient to move and complex to operate are solved.

(2) The utility model discloses the elasticity adjusting part can make screw rod screw in detain the silk number and adjust the elasticity through adjusting the handle, and the while is for the vertical height difference between adaptation test platform roof beam and the test object roof beam, finds suitable clamping position through reciprocating the elasticity adjusting part.

(3) The utility model discloses be connected with the test object and be the mode through cylindrical drum restriction, chooseed the cylindrical drum of high-accuracy processing for use, intensity is high, and is rotatory smooth, and the precision is stable, can reduce adverse factors such as frictional force, has solved the problem that adverse experiment factor influences the experimental result to the key effect of restriction location has been played.

(4) The utility model discloses a set up counter weight load mechanism, can select the quantity of counter weight steel sheet wantonly, because the distance of test object and experiment platform is not necessary, so the distance of encorbelmenting respectively is different, and this problem has just in time been solved to the counter weight steel sheet, needn't excessively consider the inconvenience that length of encorbelmenting brought.

(5) The utility model discloses a mode that the test platform roof beam passes through bolted connection fastening, clamping piece fastening, connect the locate mode reliable and stable, be difficult for droing, slide, the setting of spacing regulation fastening components in addition not only can make the height of upper junction plate obtain adjusting and restriction, can also further fasten being connected of anchor clamps and test platform roof beam.

Drawings

FIG. 1 is a schematic perspective view (view one) of an adjustable fixture for structural mechanics tests in this embodiment;

FIG. 2 is a schematic perspective view (view two) of an adjustable fixture for structural mechanics tests in this embodiment;

FIG. 3 is a top view of an adjustable fixture for structural mechanics testing in this embodiment;

fig. 4 is a front view of an adjustable fixture for structural mechanics testing in this embodiment.

Description of the labeling: the device comprises a connecting beam 100, a first clamping mechanism 200, an upper clamping end 210, an upper connecting plate 211, a limiting adjustment fastening assembly 212, a clamping piece 213, a lower clamping end 220, a lower connecting plate 221, a supporting piece 222, a second clamping mechanism 300, a first clamping arm 310, a second clamping arm 320, a clamping plate 311, a cylindrical roller 312, a roller 313, a sliding adjustment fastening assembly 400, an adjusting plate 401, a tightness adjustment assembly 500, a support 501, a screw 502, an adjusting nut 503, a handle 504, a suction cup 505, a counterweight load mechanism 600, H-shaped steel 601, a counterweight steel plate 602, a bolt 701, a nut 702, a test platform beam 801, a test object beam 802 and a blocking plate 900.

Detailed Description

In order to make the technical means and the technical effects achieved by the technical means of the present invention clearer and more complete, the following embodiments are provided and are described in detail with reference to the accompanying drawings as follows:

as shown in fig. 1 to 4, the adjustable fixture for a structural mechanics test of the present embodiment includes a fixture body, which includes a connection beam 100, a first clamping mechanism 200 and a second clamping mechanism 300 respectively mounted on the connection beam 100; the second clamping mechanism 300 comprises a first clamping arm 310 and a second clamping arm 320, and the first clamping arm 310 and the second clamping arm 320 are matched with the connecting beam 100 through a sliding adjustment fastening assembly 400. The first clamping mechanism 200 clamps the test platform beam 801, the second clamping mechanism 300 clamps the test object beam 802, and the test object beam 802 is clamped between the two clamping arms. The clamping arm I310 and the clamping arm II 320 support the arbitrary adjusting position on the square steel pipe of the connecting beam 100 and then are fastened through the sliding adjusting fastening assembly 400, so that the clamping arm I can adapt to test object beams 802 or other members with different sizes, front end fastening devices do not need to be customized respectively, the clamping arm I can be suitable for different test objects, the requirements of different test objects and different experimental schemes on the clamp are met, and the universality is good.

Preferably, the sliding adjustment fastening assembly 400 includes two adjustment plates 401 respectively located above and below the connecting beam 100, and the two adjustment plates 401 are connected by a bolt and nut set, that is, in this embodiment, four corners of the two adjustment plates 401 are perforated, the bolt and nut set is fastened, and the distance between the two adjustment plates 401 is changed by adjusting the bolt and nut set; the tops of the first clamping arm 310 and the second clamping arm 320 are fixedly connected with an adjusting plate 401 of the respective sliding adjusting fastening assembly 400, which is located below the connecting beam 100. The clamp arm adopts a square steel tube, a square steel tube upright post is welded at the top, and the square steel tube upright post is welded and fixed with an adjusting plate 401 positioned below the connecting beam 100. When two are needed to be adjustedClamping armWhen the distance is less than the preset distance, the bolt and the nut are loosened, the bolt and the nut are moved to a preset position, the bolt is fastened, and the step achieves the effect of adjusting the horizontal distance.

In this embodiment, preferably, the clamping arm one 310 and the clamping arm two 320 are both provided with a clamping plate 311 and a tightness adjusting assembly 500, the clamping plate 311 is installed on the clamping side of the clamping arm, and the tightness adjusting assembly 500 includes a bracket 501, a screw 502 in threaded fit with one end of the bracket 501, and an adjusting nut 503 installed on the screw 502; the other end of the bracket 501 is fixed with the clamping plate 311; one end of screw 502 abuts against the clamping arm, and the other end of screw 502 is provided with handle 504. The threaded rod 502 is tightened inward by the handle 504, forcing the threaded rod 502 inward against the clamp arms, and ultimately securing the slack adjuster assembly 500. One purpose of the slack adjuster assembly 500 is to adjust the slack by adjusting the handle 504 to thread the threaded rod 502 into the number of threads, and the other purpose is to find the appropriate clamping position by moving the slack adjuster assembly 500 up and down to accommodate the vertical height difference between the test platform beam 801 and the test object beam 802. Further, the clamping degree of the chucking plate 311 and the cylindrical roller 312 to the test object beam 802 is finely adjusted by the screwing of the adjusting nut 503.

Preferably, the first clamping arm 310 and the second clamping arm 320 are both provided with a cylindrical roller 312, the cylindrical roller 312 is located at the clamping side of the clamping arm, and both ends of the roller 313 of the cylindrical roller 312 are fixedly connected with the clamping plate 311. The test object beam 802 cannot be fastened too tightly, otherwise, adverse factors such as friction force are easily generated, and the like, and also cannot be too loose, so that out-of-plane displacement is easily caused, therefore, the cylindrical roller 312 with high precision processing is selected, has the characteristics of high strength, smooth rotation and stable precision, solves the problem that the adverse experiment factors influence the experiment result, and plays a key role in limiting positioning.

Preferably, the first clamping mechanism 200 includes an upper clamping end 210, a lower clamping end 220, and a supporting member 222 located between the upper clamping end and the lower clamping end 220, the supporting member 222 is fixed to the connecting beam 100, the upper clamping end 210 includes an upper connecting plate 211 fixedly connected to the connecting beam 100, and the upper connecting plate 211 is provided with a limiting adjustment fastening assembly 212; the lower clamping end 220 includes a lower connecting plate 221 mounted at the bottom of the supporting member 222, and the lower connecting plate 221 is provided with a spacing adjustment fastening assembly 212.

Preferably, the upper clamping end 210 further includes a clamping piece 213, the clamping piece 213 is mounted at the bottom of the upper connecting plate 211, and the clamping piece 213 is adjustably connected to the upper connecting plate 211 through a bolt and nut set. The clamping piece 213 (high strength) is connected with the upper connecting plate 211 through a bolt, and the nut is fixed with the upper connecting plate 211 through welding; the lower connection plate 221 is perforated in left-right symmetry and welded to the bottom support 222. The upper connecting plate 211 is provided with 8 holes, wherein four holes are used for connecting the clamping pieces 213 through bolts, the clamping pieces 213 and the upper connecting plate 211 are used for fastening the upper flange of the test platform beam 801, the tightness is adjusted through high-strength bolts, the rest four holes are used as welding nuts, and the height is limited by screwing the adjusting bolts into the screw threads (limiting and adjusting the fastening assembly 212). Like the upper end method, the lower connecting plate 221 is welded with nuts, and is screwed into the screw thread number through adjusting screws to limit the height, so that the bottom of the experimental platform beam is fastened (the limiting and adjusting fastening assembly 212) to limit and fasten the bottom of the experimental platform beam 801.

In the preferred embodiment, a counterweight loading mechanism 600 is disposed at one end of the connecting beam 100 near the first clamping mechanism 200.

In the present embodiment, the counterweight loading mechanism 600 preferably includes an H-shaped steel 601 mounted on the connecting beam 100, and a plurality of counterweight steel plates 602 mounted on the H-shaped steel 601, and the number of the counterweight steel plates 602 can be increased or decreased. Holes are formed in the upper portion and the lower portion of the counterweight steel plate 602, a plurality of counterweight steel plates 602 are fixed through bolts and nuts, and the bottom of the H-shaped steel 601 is welded and fixed with the supporting piece 222. After the test scheme is determined, the number of the steel plates 602 which need to be added with the balance weight is calculated according to the determined relative position, and the steel plates are evenly arranged on the H-shaped steel 601 according to the number. Because the distance between the test object and the test platform is not constant, the overhanging distances are different, and the problem can be solved by selecting the number of the counterweight steel plates 602 without considering the inconvenience caused by the overhanging length too much.

In this embodiment, preferably, one end of the screw 502 is provided with a suction cup 505, and the screw 502 abuts against the clamping arm through the suction cup 505. The suction cup 505 can increase the stress area, so as to further play a role in fixing and prevent the tightness adjusting assembly 500 from sliding off.

Preferably, the blocking plate 900 is disposed at one end of the connecting beam 100 close to the second clamping arm 320, and the blocking plate 900 is disposed at both ends of the first clamping arm 310 and the second clamping arm 320 far from the connecting beam 100. The blocking plate 900 is disposed to prevent the second clamping arm 320 from separating from the connecting beam 100 and prevent the slack adjuster assembly 500 from separating from the clamping arm.

As shown in the side view of the embodiment shown in fig. 4, the test platform beam 801 is fastened to the first clamping mechanism 200, and the test object beam 802 is fastened to the second clamping mechanism 300, which have different horizontal and vertical positions in space, but the test requirements are met through a series of simple and fast adjustment operations.

The above is a detailed description of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be assumed that the embodiments of the present invention are limited to the above description, and it will be apparent to those skilled in the art that the present invention can be implemented in a variety of ways without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an adjustable anchor clamps for structural mechanics is experimental, includes the anchor clamps body, its characterized in that: the clamp body comprises a connecting beam, a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism and the second clamping mechanism are respectively arranged on the connecting beam; the second clamping mechanism comprises a first clamping arm and a second clamping arm, and the first clamping arm and the second clamping arm are matched with the connecting beam through a sliding adjusting and fastening assembly.

2. An adjustable clamp for structural mechanics tests as claimed in claim 1, wherein: the sliding adjusting and fastening assembly comprises two adjusting plates which are respectively positioned above and below the connecting beam, the two adjusting plates are connected through a bolt and nut group, and the distance between the two adjusting plates is changed through the adjustment of the bolt and nut group; the tops of the first clamping arm and the second clamping arm are fixedly connected with an adjusting plate of the sliding adjusting fastening assembly located below the connecting beam.

3. An adjustable clamp for structural mechanics tests as claimed in claim 2, wherein: the clamping arm I and the clamping arm II are respectively provided with a clamping plate and a tightness adjusting component, the clamping plates are arranged on the clamping sides of the clamping arms, and the tightness adjusting component comprises a bracket, a screw rod in threaded fit with one end of the bracket and an adjusting nut arranged on the screw rod; the other end of the bracket is fixed with the clamping plate; one end of the screw rod props against the clamping arm, and the other end of the screw rod is provided with a handle.

4. An adjustable clamp for structural mechanics tests as claimed in claim 3, wherein: and the first clamping arm and the second clamping arm are respectively provided with a cylindrical roller, the cylindrical rollers are positioned at the clamping sides of the clamping arms, and two ends of a roller of each cylindrical roller are fixedly connected with the clamping plates.

5. An adjustable clamp for structural mechanics tests as claimed in claim 1, wherein: the first clamping mechanism comprises an upper clamping end, a lower clamping end and a supporting piece positioned between the upper clamping end and the lower clamping end, the supporting piece is fixed with the connecting beam, the upper clamping end comprises an upper connecting plate fixedly connected with the connecting beam, and the upper connecting plate is provided with a limiting and adjusting fastening assembly; the lower clamping end comprises a lower connecting plate arranged at the bottom of the supporting piece, and the lower connecting plate is provided with a limiting and adjusting fastening assembly.

6. An adjustable clamp for structural mechanics tests as claimed in claim 5, wherein: the upper clamping end further comprises a clamping piece, the clamping piece is mounted at the bottom of the upper connecting plate, and the clamping piece is adjustably connected with the upper connecting plate through a bolt and nut set.

7. An adjustable clamp for structural mechanics tests as claimed in claim 1, wherein: and one end of the connecting beam, which is close to the first clamping mechanism, is provided with a counterweight load mechanism.

8. An adjustable clamp for structural mechanics tests as claimed in claim 7, wherein: the counterweight load mechanism comprises H-shaped steel installed on the connecting beam and a plurality of counterweight steel plates installed on the H-shaped steel, and the number of the counterweight steel plates can be increased or decreased.

9. An adjustable clamp for structural mechanics tests as claimed in claim 3, wherein: one end of the screw rod is provided with a sucker, and the screw rod is propped against the clamping arm through the sucker.

10. An adjustable fixture for structural mechanics tests as claimed in claim 1, 2 or 3, wherein: one end of the connecting beam close to the second clamping arm is provided with a blocking plate, and one ends of the first clamping arm and the second clamping arm far away from the connecting beam are provided with the blocking plates.