Multi-clamp tension equipment for rubber dumbbell test piece

Abstract

The utility model discloses rubber dumbbell test piece multi-clamp tension equipment, which relates to the field of rubber dumbbell test piece testing and comprises a base, two groups of lifting modules are mounted at the top of the base, a stretching cross frame is mounted on the inner sides of the lifting modules, and two ends of the stretching cross frame are respectively mounted at the output ends of the two groups of lifting modules. According to the utility model, the clamps for independently testing the tensile strength of the rubber dumbbell test pieces are arranged, so that the tensile strength of a plurality of rubber dumbbell test pieces can be tested simultaneously, and the testing efficiency is greatly improved; according to the rubber dumbbell test piece clamping device, adaptive clamping force is given to the two clamping blocks through the springs, a rubber dumbbell test piece can be conveniently pre-clamped and fixed in the initial stage, then the two clamping blocks are controlled to be always kept in a clamping state by limiting movement of pull rods in the multiple clamping assemblies through the locking assemblies, and then the rubber dumbbell test piece is completely clamped and fixed; the operation is convenient, and the rubber dumbbell test piece can be conveniently and rapidly clamped and fixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber dumbbell test piece test field, concretely is a kind of rubber dumbbell test piece multi-gripper tension equipment. BACKGROUND

[0002] Rubber dumbbell test piece tensile strength test is one of important methods for evaluating the mechanical properties of rubber material.The existing tensile testing machine is mainly composed of upper and lower clamps, tension sensor and linear module, the lower clamp is in fixed state, the linear module is connected with the upper clamp, and drives the upper clamp to move, to control the spacing between the upper and lower clamps.In addition, a tension sensor for detecting tensile force is additionally installed between the upper clamp and the driving end of the linear module.

[0003] The existing tensile testing machine can only test a single rubber dumbbell test piece at a time, and does not have the function of testing multiple rubber dumbbell test pieces at the same time, which greatly reduces the work efficiency, and secondly, the existing clamp is relatively cumbersome to clamp the end of the rubber dumbbell test piece, and most of them are screwed with a screw rod to force the clamp to clamp and fix the end of the rubber dumbbell test piece, which consumes a lot of time when clamping and fixing the rubber dumbbell test piece, and is not conducive to improving work efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at: in order to solve the problem mentioned in the above background art, provide a kind of rubber dumbbell test piece multi-gripper tension equipment.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of rubber dumbbell test piece multi-gripper tension equipment, including base, the top of the base is equipped with two groups of lifting module, the inner side of the lifting module is installed with tensile crosspiece, the two ends of the tensile crosspiece are installed on the output end of two groups of the lifting module respectively, the lower surface of the tensile crosspiece is equidistant and is arranged with multiple tension sensors, the inner side of two groups of the lifting module is equipped with two groups of clamping components, one of the clamping components is connected to the lower end of multiple tension sensors, another group of the clamping components is fixedly installed on the top of the base, two groups of the clamping components are symmetrically arranged, and each group of the clamping components is provided with multiple clamps;

[0006] Among them, the clamp includes a board frame, a partition is integrally formed in one end of the board frame, a pull rod is connected through the middle of the partition, two symmetrically distributed clamping blocks are rotatably connected to one end of the pull rod through a connecting rod, the outer side end of the two clamping blocks is rotatably connected with the board frame through a shaft rod, a limiting block is fixedly connected to the other end of the pull rod, a spring is sleeved on the outer wall of the pull rod, and the spring is located between the limiting block and the partition.

[0007] As a further scheme of the utility model: the clamp further includes a connecting rod connected to the limiting block away from the one end of the pull rod, and a through hole is formed in the middle part of the connecting rod.

[0008] As a further scheme of the utility model: a group of locking assemblies are arranged between the clamping assemblies and the stretching cross frame, and another group of locking assemblies are arranged between the clamping assemblies and the base.

[0009] As a further scheme of the utility model: the locking assembly includes two second fixing bases, a screw rod is rotatably connected between the two second fixing bases through a bearing, a support is arranged on the outer side of the screw rod, the upper end of the support is connected with the middle part of the screw rod through a thread, a connecting plate is fixedly connected to the lower end of the support, and a plurality of guide pieces are equidistantly arranged on the inner side wall of the connecting plate.

[0010] As a further scheme of the utility model: the locking assembly further includes a plurality of first fixing bases, the first fixing bases are distributed in two groups at one end of the plate frame, the two first fixing bases are arranged on the two sides of the connecting rod, and a moving rod is arranged between the two first fixing bases, the moving rod is slidably connected with the first fixing base through a shaft sleeve, a limiting ball is arranged in the middle part of the moving rod, and a connecting block is fixedly connected to the end of the moving rod close to the guide piece.

[0011] As a further scheme of the utility model: the limiting ball is matched with the aperture size of the through hole.

[0012] As a further scheme of the utility model: the guide piece includes two limiting guide plates arranged in parallel, and the spacing between the two limiting guide plates is matched with the thickness of the connecting block.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a clamp for independently testing the tensile strength of rubber dumbbell test pieces, which can test the tensile strength of multiple rubber dumbbell test pieces at the same time, greatly improving the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a structure schematic view;

[0016] Figure 2 Another perspective structure schematic view of the utility model;

[0017] Figure 3 Partial structure schematic view of the utility model;

[0018] Figure 4 Partial structure schematic view of the utility model's clamp and locking mechanism;

[0019] Figure 5 Locking mechanism structure schematic view of the utility model.

[0020] In the figure: 1, base; 2, lifting module; 3, stretching cross frame; 4, clamping assembly; 401, plate frame; 402, partition; 403, pull rod; 404, clamping block; 405, shaft; 406, limit block; 407, spring; 408, connecting rod; 409, through hole; 5, locking assembly; 501, first fixed seat; 502, moving rod; 503, limit ball; 504, connecting block; 505, connecting plate; 506, guide; 507, support; 508, second fixed seat; 509, screw; 6, tension sensor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 In the embodiments of the utility model, a rubber dumbbell test piece multi-clamp tension equipment includes a base 1, the top of the base 1 is provided with two groups of lifting modules 2, the inner side of the lifting module 2 is provided with a stretching cross frame 3, the two ends of the stretching cross frame 3 are respectively installed on the output ends of the two groups of lifting modules 2, and the lower surface of the stretching cross frame 3 is provided with a plurality of tension sensors 6 at equal intervals, the inner side of the two groups of lifting modules 2 is provided with two groups of clamping assemblies 4, one group of clamping assemblies 4 is connected to the lower ends of the plurality of tension sensors 6, the other group of clamping assemblies 4 is fixedly installed on the top of the base 1, the two groups of clamping assemblies 4 are symmetrically arranged, and each group of clamping assemblies 4 is provided with a plurality of clamps;

[0023] Wherein, the clamp comprises a plate frame 401, one end of the plate frame 401 is integrally formed with a partition plate 402, the middle part of the partition plate 402 is connected with a pull rod 403, one end of the pull rod 403 is rotatably connected with two symmetrical clamping blocks 404 through connecting rods, the outer side ends of the two clamping blocks 404 are rotatably connected with the plate frame 401 through shaft rods 405, the other end of the pull rod 403 is fixedly connected with a limiting block 406, the outer wall of the pull rod 403 is sleeved with a spring 407, and the spring 407 is located between the limiting block 406 and the partition plate 402;

[0024] The clamp further comprises a connecting rod 408 connected to the limiting block 406 away from one end of the pull rod 403, and a through hole 409 is formed in the middle part of the connecting rod 408; a set of clamping assemblies 4 and the stretching cross frame 3 are provided with a set of locking assemblies 5, and another set of clamping assemblies 4 and the base 1 are also provided with a set of locking assemblies 5, and the two sets of locking assemblies 5 are the same in structure and size.

[0025] In this embodiment: by setting the clamp for testing the tensile strength of the rubber dumbbell test piece, multiple rubber dumbbell test pieces can be tested for tensile strength at the same time, greatly improving the test efficiency; by giving the two clamping blocks 404 an adaptive clamping force through the spring 407, the rubber dumbbell test piece can be pre-clamped and fixed in the initial stage, and then the movement of the pull rod 403 in the multiple clamping assemblies 4 is limited by the locking assembly 5 to control the two clamping blocks 404 to always maintain the clamping state, thereby forming complete clamping and fixing of the rubber dumbbell test piece; convenient operation, easy to quickly clamp and fix the rubber dumbbell test piece.

[0026] Specifically, the clamping assembly 4 in the present scheme comprises two sets of upper and lower clamping assemblies, and each set of clamping assembly 4 is also composed of multiple independent clamps; when multiple rubber dumbbell test pieces need to be tested for tensile strength, the pull rod 403 is moved by pulling the clamping block 404, at the same time the spring 407 is in a compressed state, with the movement of the pull rod 403 the two clamping blocks 404 are pushed to rotate, and then the two clamping blocks 404 are in an open state, at this time one end of the rubber dumbbell test piece is placed between the two clamping blocks 404, and then the pulling of the clamping block 404 is released, the pull rod 403 is pushed to reset under the action of the spring 407, and then the two clamping blocks 404 are rotated and pre-clamped on the rubber dumbbell test piece, at this time, under the action of no external force, the rubber dumbbell test piece is clamped between the two clamping blocks 404 by the resetting force of the spring 407; then the other end of the rubber dumbbell test piece is clamped in the same way, after the two ends of the rubber dumbbell test piece are pre-clamped and fixed, the multiple parallel connecting rods 408 on one set of clamping assemblies 4 are simultaneously limited by the locking assembly 5 to limit the displacement of the pull rod 403, and ensure that the two clamping blocks 404 are always in a clamping state.

[0027] It should be noted that when the spring 407 in the present scheme is in the longest state, the clamping ends of the two clamping blocks 404 are in a completely clamped state.

[0028] Please focus on referring to Figures 1-5 The locking assembly 5 comprises two second fixing bases 508, a screw rod 509 is rotatably connected between the two second fixing bases 508 through a bearing, the outer side of the screw rod 509 is provided with a bracket 507, the upper end of the bracket 507 is threadedly connected with the middle part of the screw rod 509, the lower end of the bracket 507 is fixedly connected with a connecting plate 505, a plurality of guide pieces 506 are equidistantly arranged on the inner side wall of the connecting plate 505;

[0029] The locking assembly 5 further comprises a plurality of groups of first fixing bases 501, each group of the first fixing bases 501 is distributed at one end of the plate frame 401, the two first fixing bases 501 are distributed at the two sides of the connecting rod 408, and a moving rod 502 is arranged between the two first fixing bases 501, the moving rod 502 is slidably connected with the first fixing base 501 through a shaft sleeve, the middle part of the moving rod 502 is provided with a limiting ball 503, and the end of the moving rod 502 close to the guide piece 506 is fixedly connected with a connecting block 504.

[0030] The limiting ball 503 is matched with the hole diameter of the through hole 409; the guide piece 506 comprises two limiting guide plates which are arranged in parallel, and the spacing between the two limiting guide plates is matched with the thickness of the connecting block 504.

[0031] In the embodiment, the bracket 507 can be driven to move in the length direction of the screw rod 509 by screwing the screw rod 509, the moving bracket 507 drives the plurality of guide pieces 506 to move, the guide piece 506 pushes the moving rod 502 to move horizontally, and then the limiting ball 503 can enter the through hole 409, at this time, the connecting rod 408 is limited and cannot move any more, that is, the extension and contraction of the pull rod 403 is limited, the pull rod 403 in the fixed state also limits the rotation of the two clamping blocks 404, and the rubber dumbbell test piece is fixed and clamped.

[0032] It should be noted that the guide piece 506 in the scheme is composed of two guide limiting blocks, and the only function of the guide piece 506 is to push the moving rod 502 to move horizontally, and the moving rod 502 cannot be vertically limited, so the independence between the plurality of clamps can still be guaranteed.

[0033] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A rubber dumbbell specimen multi-grip tension device, comprising a base (1), the top of the base (1) is provided with two groups of lifting modules (2), the inner side of the lifting module (2) is provided with a stretching crossbeam (3), and the two ends of the stretching crossbeam (3) are respectively installed on the output ends of the two groups of lifting modules (2), characterized in that, The lower surface of the stretching cross frame (3) is equidistantly arranged with a plurality of tension sensors (6), the inner sides of the two groups of lifting modules (2) are provided with two groups of clamping assemblies (4), one group of the clamping assemblies (4) is connected to the lower ends of the plurality of tension sensors (6), the other group of the clamping assemblies (4) is fixedly installed on the top of the base (1), the two groups of clamping assemblies (4) are symmetrically arranged, and each group of the clamping assemblies (4) is provided with a plurality of clamps. The clamp comprises a plate frame (401), one end of the plate frame (401) is integrally formed with a partition plate (402), the middle part of the partition plate (402) is connected with a pull rod (403) penetratingly, one end of the pull rod (403) is rotatably connected with two symmetrically distributed clamping blocks (404) through a connecting rod, the outer side ends of the two clamping blocks (404) are rotatably connected with the plate frame (401) through shaft rods (405), the other end of the pull rod (403) is fixedly connected with a limiting block (406), the outer wall of the pull rod (403) is sleeved with a spring (407), and the spring (407) is located between the limiting block (406) and the partition plate (402).

2. A rubber dumbbell specimen multi-grip tension apparatus according to claim 1, wherein, The clamp further comprises a connecting rod (408) connected to the end of the limiting block (406) away from the pull rod (403), and the middle part of the connecting rod (408) is provided with a penetrating hole (409).

3. A rubber dumbbell specimen multi-grip tension apparatus according to claim 2, wherein, One group of the clamping assemblies (4) and the stretching cross frame (3) are provided with one group of locking assemblies (5), the other group of the clamping assemblies (4) and the base (1) are also provided with one group of locking assemblies (5), and the two groups of locking assemblies (5) are the same in structure and size.

4. A rubber dumbbell specimen multi-grip tension apparatus according to claim 3, wherein, The locking assembly (5) comprises two second fixed seats (508), a screw rod (509) is rotatably connected between the two second fixed seats (508) through a bearing, a support (507) is arranged on the outer side of the screw rod (509), the upper end of the support (507) and the middle part of the screw rod (509) are connected through threads, the lower end of the support (507) is fixedly connected with a connecting plate (505), and a plurality of guide pieces (506) are equidistantly arranged on the inner side wall of the connecting plate (505).

5. A rubber dumbbell specimen multi-grip tension apparatus according to claim 4, wherein, The locking assembly (5) further comprises a plurality of groups of first fixed seats (501), each group of the first fixed seats (501) is distributed at one end of the plate frame (401), the two first fixed seats (501) are distributed on the two sides of the connecting rod (408), and a moving rod (502) is arranged between the two first fixed seats (501), the moving rod (502) and the first fixed seat (501) are connected through a shaft sleeve, a limiting ball (503) is arranged on the middle part of the moving rod (502), and a connecting block (504) is fixedly connected to the end of the moving rod (502) close to the guide piece (506).

6. A rubber dumbbell specimen multi-grip tension apparatus according to claim 5, wherein, The limiting ball (503) and the hole diameter of the penetrating hole (409) are matched.

7. A rubber dumbbell specimen multi-grip tension apparatus according to claim 6, wherein, The guide (506) comprises two parallel limiting guide plates, and the distance between the two limiting guide plates is matched with the thickness of the connecting block (504).

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