CN219675699U

CN219675699U - Early crack resistance concrete performance test device

Info

Publication number: CN219675699U
Application number: CN202320940588.3U
Authority: CN
Inventors: 曲东杰; 韩峰; 辜虹月; 刘军
Original assignee: Beijing Urban Construction Yatai Jintong Concrete Co ltd
Current assignee: Beijing Urban Construction Yatai Jintong Concrete Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-09-12
Anticipated expiration: 2033-04-24

Abstract

The utility model relates to an early crack resistance concrete performance test device, which belongs to the technical field of concrete tests and comprises a machine body, wherein an experiment box is arranged in the machine body, a workbench is fixedly arranged in the experiment box, two guide rods are arranged in the experiment box and are fixedly connected with the inner wall opposite to the experiment box respectively, clamping blocks are sleeved on the guide rods, the clamping blocks are in sliding connection with the guide rods along the horizontal direction, a first spring is fixedly arranged between the clamping blocks and the inner wall of the experiment box, a fixed plate is arranged above the guide rods, one side of the fixed plate is fixedly connected with the inner wall of the experiment box, a threaded rod is connected in the fixed plate in a threaded manner, one end of the threaded rod, which is close to the clamping blocks, is rotationally connected with a trigger block, a first inclined surface is formed in the trigger block, the side walls of the two trigger blocks, which face each other, are opposite to each other, are fixedly provided with limiting rods, and limiting grooves which are in sliding fit with the limiting rods are formed in the inner wall of the experiment box along the vertical direction.

Description

Early crack resistance concrete performance test device

Technical Field

The utility model relates to the technical field of concrete tests, in particular to a device for testing early-stage crack resistance concrete performance.

Background

The concrete is one of the most main civil engineering materials in the current generation, has the characteristics of high compressive strength, good durability, wide strength grade range and the like, is used as one of important materials for building construction, has strict standards in the production process, and therefore needs to carry out a series of strength detection when the concrete is produced and prepared, wherein the crack resistance detection of the concrete is one of important links for the strength detection of the concrete.

The existing detection device generally places a concrete block on a workbench, presses the concrete block by using a pressing block, and then observes the cracking condition of the concrete block.

In view of the above-mentioned related art, the inventors consider that the position of the concrete is easily shifted during the pressing of the concrete by the briquette, and that there is a defect that the experimental data is large in error.

Disclosure of Invention

In order to reduce experimental errors, the utility model provides a device for testing early-stage crack resistance concrete performance.

The utility model provides an early crack resistance concrete performance test device which adopts the following technical scheme:

the utility model provides an early crack resistance concrete performance test device, includes the organism, is provided with the experiment box in the organism, has set firmly the workstation in the experiment box, be provided with two guide bars in the experiment box, two guide bars respectively with the relative inner wall fixed connection of experiment box, the cover is equipped with the grip block on the guide bar, along horizontal direction sliding connection between grip block and the guide bar, set firmly first spring between grip block and the inner wall of experiment box, the top of guide bar is provided with the fixed plate, one side of fixed plate and the inner wall fixed connection of experiment box, fixed plate internal thread connection has the threaded rod, the one end that the threaded rod is close to the grip block rotates and is connected with the trigger piece, first inclined plane has been seted up to the lateral wall that the trigger piece was towards the grip block, the lateral wall that two trigger pieces deviate from each other has all set firmly the gag lever post, the gag slot with gag lever post sliding fit has been seted up along vertical direction to the inner wall of experiment box.

Through adopting above-mentioned technical scheme, the staff makes the trigger block extrude the grip block through rotating the threaded rod to two grip blocks are close to each other and press from both sides tightly fixedly to the concrete block that places on the workstation, and then make concrete self position be difficult for taking place the skew in the testing process, realized the effect of reducing experimental error from this.

Optionally, one side that the guide bar deviates from the trigger block is provided with the auxiliary block, the second inclined plane has been seted up towards the lateral wall of grip block to the auxiliary block, vertical direction sliding connection is followed to the inner wall of auxiliary block and experiment box, fixed block and dead lever have been set firmly respectively to the lateral wall of trigger block and auxiliary block homonymy, one side that the trigger block was provided with the bull stick towards the fixed block, the bull stick rotates with the inner wall of experiment box and is connected, and the junction of bull stick and experiment box is not at the tip of bull stick, the one end rotation of bull stick is connected with the trigger lever, the other end rotation of bull stick is connected with the transfer line, the one end that the bull stick was kept away from to the trigger lever is articulated with the fixed block, the one end rotation that the bull stick was kept away from to the transfer line is connected with the gangbar, the one end and dead lever fixed connection of transfer line are kept away from to the gangbar.

Through adopting above-mentioned technical scheme, the trigger piece makes the trigger lever remove through the fixed block in the removal in-process, and the trigger lever removes and makes the bull stick rotate, and the bull stick makes the fixed lever remove through transfer line and gangbar to supplementary piece extrudees the grip block, has realized the supplementary effect that the grip block was extruded to the supplementary trigger piece of supplementary piece from this.

Optionally, the lateral wall that the experiment box is close to the auxiliary block has seted up the spout, and sliding connection has the slider in the spout, and the one end of slider stretches out spout and auxiliary block fixed connection, and the telescopic link has set firmly between the inner wall of slider and experiment box in spout department.

Through adopting above-mentioned technical scheme, trigger the piece at the removal in-process, the slider slides along the spout, and the telescopic link is in tensile or compression state this moment, and the telescopic link is spacing to the slider to realized the effect of auxiliary block and experiment box inner wall sliding connection.

Optionally, a second spring is fixed between the sliding block and the inner wall of the experiment box at the sliding groove.

Through adopting above-mentioned technical scheme, when the trigger piece extrudees the grip block, the second spring is in compression state, and when keeping away from the grip block, the second spring release elasticity makes the slider reset to the slider makes supplementary piece reset, has realized the supplementary effect that the piece reset of second spring.

Optionally, a corner ball of the clamping block, which is close to the auxiliary block, is hinged with a first ball, and the auxiliary block is provided with a first rolling groove in rolling fit with the first ball at the second inclined surface.

Through adopting above-mentioned technical scheme, when auxiliary block extrusion grip block, the grip block makes first ball roll along first rolling groove, and first ball reduces the friction between grip block and the auxiliary block to realized the smooth and easy effect of motion between auxiliary block and the grip block.

Optionally, the grip block has offered logical groove towards the lateral wall of guide bar, and the grip block has set firmly the guide block in the inner wall of logical groove department, and the lateral wall of guide bar has offered the guide way with guide block slip adaptation, and the guide way does not run through the terminal surface at guide bar both ends.

Through adopting above-mentioned technical scheme, the grip block makes the guide block slide along the guide way in the removal in-process, makes the grip block be difficult for breaking away from the guide bar to realized spacing effect to the grip block.

Optionally, a corner ball of the clamping block, which is close to the trigger block, is hinged with a second ball, and the trigger block is provided with a second rolling groove in rolling fit with the second ball at the first inclined surface.

Through adopting above-mentioned technical scheme, when the trigger block extrudees the grip block, the grip block makes the second ball roll along the second rolling groove, and the second ball reduces the friction between grip block and the trigger block to realize the smooth and easy effect of motion between trigger block and the grip block

Optionally, a knob is fixedly arranged at one end of the threaded rod far away from the trigger block.

Through adopting above-mentioned technical scheme, the staff passes through the knob and rotates the threaded rod, has realized making things convenient for the staff to rotate the effect of threaded rod.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the two clamping blocks are mutually close to each other and clamp and fix the concrete blocks to be detected, so that the position of the concrete is not easy to deviate in the detection process, and the effect of reducing experimental errors is realized;

2. the trigger block drives the rotating rod to rotate through the fixed block in the moving process, and the rotating rod drives the auxiliary block to extrude the clamping block through the transmission rod and the linkage rod, so that the effect that the auxiliary block assists the trigger block to extrude the clamping block is realized;

3. the first ball reduces the friction between the clamping block and the auxiliary block, and the second ball reduces the friction between the clamping block and the trigger block, so that the effect that the auxiliary block and the trigger block smoothly extrude the clamping block is achieved.

Drawings

FIG. 1 is a schematic structural diagram of an early crack resistance concrete performance test apparatus according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of an embodiment of the present utility model showing the internal structure of a cartridge;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;

fig. 4 is a schematic structural diagram showing a manner in which the trigger block drives the auxiliary block to move in an embodiment of the present utility model.

In the figure, 1, a machine body; 2. an experiment box; 21. a work table; 22. a guide rod; 221. a guide groove; 23. a first spring; 24. a fixing plate; 25. a limit groove; 26. a rotating rod; 261. a trigger lever; 262. a transmission rod; 27. a chute; 271. a telescopic rod; 272. a second spring; 3. a clamping block; 31. a first ball; 32. a through groove; 33. a guide block; 34. a second ball; 4. a threaded rod; 41. a trigger block; 411. a fixed block; 412. a first inclined surface; 413. a limit rod; 414. a second rolling groove; 42. a knob; 5. an auxiliary block; 51. a second inclined surface; 52. a fixed rod; 521. a linkage rod; 53. a slide block; 54. a first rolling groove.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses a device for testing early-stage crack resistance concrete performance.

Referring to fig. 1, an early crack resistance concrete performance test device comprises a machine body 1, wherein an experiment box 2 is fixedly arranged on the machine body 1, a workbench 21 is fixedly arranged on the inner bottom wall of the experiment box 2, and clamping blocks 3 are arranged on two sides of the workbench 21.

After placing the concrete on the surface of the table 21, the worker brings the two clamp blocks 3 close to each other, so that the two clamp blocks 3 clamp and fix the concrete.

Referring to fig. 2, one side that two grip blocks 3 deviate from each other is provided with guide bar 22 along the horizontal direction, one end that two guide bars 22 keep away from each other is respectively with the relative lateral wall fixed connection of experiment box 2, one side that two grip blocks 3 deviate from each other is provided with first spring 23, the both ends of first spring 23 respectively with the inner wall of experiment box 2 and grip block 3 fixed connection, and first spring 23 cover is established on the circumference lateral wall of guide bar 22.

Referring to fig. 2 and 3, a through groove 32 is formed in the clamping block 3, the through groove 32 penetrates through the side walls on two sides of the clamping block 3, the guide rod 22 penetrates through the groove 32, a guide block 33 is fixedly arranged on the inner wall of the clamping block 3 at the through groove 32, and a guide groove 221 which is in sliding fit with the guide block 33 is formed in the side wall of the guide rod 22.

When the clamping blocks 3 are extruded, the two clamping blocks 3 move along the guide rod 22 in opposite directions, and the first spring 23 is in a stretched state; when the clamping blocks 3 are not pressed, the two clamping blocks 3 move away from each other along the guide rod 22, and the first springs 23 are in a compressed state. When the clamping block 3 moves along the guide rod 22, the clamping block 3 drives the guide block 33 to slide along the guide groove 221.

Referring to fig. 2, a trigger block 41 is disposed above the guide rod 22, a first inclined surface 412 is disposed at one end of the trigger block 41 facing the clamping block 3, a second ball 34 is hinged to a corner ball of the clamping block 3, and a second rolling groove 414 adapted to the second ball 34 in a rolling manner is disposed at the first inclined surface 412 of the trigger block 41.

Referring to fig. 2, a limiting rod 413 is fixedly arranged on the side wall of the trigger block 41, which is away from the first inclined surface 412, and a limiting groove 25 which is slidably matched with the limiting rod 413 is formed in the inner wall of the experiment box 2 along the vertical direction.

Referring to fig. 2, a fixed plate 24 is arranged on one side of the trigger block 41, which is away from the guide rod 22, along the horizontal direction, one side of the fixed plate 24 is fixedly connected with the inner wall of the experiment box 2, a threaded rod 4 is arranged in the fixed plate 24 along the vertical direction and is in threaded connection with the fixed plate, a knob 42 is fixedly arranged on the top end of the threaded rod 4, and the bottom end of the threaded rod 4 is rotationally connected with the trigger block 41.

Before detection, a worker rotates the knob 42 to drive the threaded rod 4 to rotate, the threaded rod 4 rotates to drive the trigger block 41 to squeeze the clamping block 3, and in the squeezing process, the clamping block 3 drives the second ball 34 to slide along the second rolling groove 414; after detection, the operator reverses the knob 42 to drive the trigger block 41 away from the clamping block 3 through the threaded rod 4, and at this time, the trigger block 41 does not squeeze the clamping block 3 any more. During the movement of the trigger block 41, the trigger block 41 drives the limiting rod 413 to slide along the limiting groove 25.

Referring to fig. 2, an auxiliary block 5 is provided below the guide rod 22, a second inclined surface 51 is provided at one end of the auxiliary block 5 facing the clamping block 3, a first ball 31 is hinged to a corner ball of the clamping block 3 adjacent to the auxiliary block 5, and a first rolling groove 54 adapted to the first ball 31 in a rolling manner is provided at the second inclined surface 51 of the auxiliary block 5.

Referring to fig. 2, the side wall of the auxiliary block 5 deviating from the second inclined surface 51 is fixedly provided with a sliding block 53, the inner wall of the experiment box 2 is provided with a sliding groove 27 in sliding fit with the sliding block 53, a telescopic rod 271 and a second spring 272 are arranged in the sliding groove 27, the telescopic rod 271 is of a multi-stage telescopic structure, the telescopic rod 271 comprises an inner rod and an outer rod, one end of the telescopic rod 271 is fixedly connected with the inner top wall of the experiment box 2 at the sliding groove 27, the other end of the telescopic rod 271 is fixedly connected with the sliding block 53, the second spring 272 is sleeved on the circumferential side wall of the telescopic rod 271, and two ends of the second spring 272 are respectively fixedly connected with the experiment box 2 and the sliding block 53.

When the trigger block 41 extrudes the clamping block 3, the trigger block 41 drives the auxiliary block 5 to extrude the clamping block 3, and in the extrusion process, the clamping block 3 drives the first ball 31 to roll along the first rolling groove 54, and at the moment, the telescopic rod 271 and the second spring 272 are in a stretching state; when the trigger block 41 is far away from the clamping block 3, the trigger block 41 drives the auxiliary block 5 to be far away from the clamping block 3, and the telescopic rod 271 and the second spring 272 are in a compressed state. During the movement of the auxiliary block 5, the auxiliary block 5 drives the sliding block 53 to slide along the sliding groove 27.

Referring to fig. 2 and 4, the fixed block 411 and the fixed rod 52 are respectively fixed on the side walls of the same sides of the trigger block 41 and the auxiliary block 5, the rotating rod 26 is arranged on one side of the trigger block 41 facing the fixed block 411, the center of the rotating rod 26 is rotationally connected with the inner wall of the experiment box 2, one end of the rotating rod 26 is rotationally connected with the trigger rod 261, the other end of the rotating rod 26 is rotationally connected with the transmission rod 262, one end of the trigger rod 261, which is far away from the rotating rod 26, is hinged with the fixed block 411, one end of the transmission rod 262, which is far away from the rotating rod 26, is rotationally connected with the linkage rod 521, and one end of the linkage rod 521, which is far away from the transmission rod 262, is fixedly connected with one end of the fixed rod 52, which is far away from the auxiliary block 5.

The trigger block 41 moves to drive the fixed block 411 to move, the fixed block 411 drives the trigger rod 261 to move, the trigger rod 261 drives the rotating rod 26 to rotate, the rotating rod 26 rotates to drive the transmission rod 262 to move, the transmission rod 262 drives the linkage rod 521 to move, the linkage rod 521 drives the fixed rod 52 to move, and the fixed rod 52 drives the auxiliary block 5 to move.

The implementation principle of the early crack resistance concrete performance test device provided by the embodiment of the utility model is as follows: after concrete is placed on the surface of the workbench 21, a worker rotates the knob 42 to drive the trigger block 41 to extrude the clamping block 3 through the threaded rod 4, and in the process that the trigger block 41 extrudes the clamping block 3, the trigger block 41 drives the trigger rod 261 to drive the rotating rod 26 to rotate through the fixed block 411, the rotating rod 26 rotates, the connecting rod 521 drives the fixed rod 52 to move through the transmission rod 262, and the fixed rod 52 drives the auxiliary block 5 to extrude the clamping block 3, so that the two clamping blocks 3 clamp and fix the concrete. Through the structure, the effect of reducing experimental errors is achieved.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides an early crack resistance concrete performance test device, includes organism (1), is provided with experiment box (2) in organism (1), has set firmly workstation (21), its characterized in that in experiment box (2): be provided with two guide bars (22) in experiment box (2), two guide bars (22) respectively with the relative inner wall fixed connection of experiment box (2), the cover is equipped with grip block (3) on guide bar (22), follow horizontal direction sliding connection between grip block (3) and guide bar (22), set firmly first spring (23) between the inner wall of grip block (3) and experiment box (2), the top of guide bar (22) is provided with fixed plate (24), one side of fixed plate (24) and the inner wall fixed connection of experiment box, threaded rod (4) are connected with in fixed plate (24), one end rotation that threaded rod (4) are close to grip block (3) is connected with trigger piece (41), first inclined plane (412) have been seted up towards the lateral wall of grip block (3) to trigger piece (41), limit lever (413) have all been set firmly to the lateral wall that two trigger pieces (41) deviate from each other, limit groove (25) with limit lever (413) slip adaptation have been seted up along vertical direction to the inner wall of experiment box (2).

2. The early crack resistance concrete performance test device according to claim 1, wherein: the utility model discloses a trigger piece, including fixed block (411) and fixed rod (52), the fixed block (411) has been set firmly respectively to the lateral wall of fixed block (41) and auxiliary block (5) homonymy, one side of trigger piece (41) orientation fixed block (411) is provided with bull stick (26), bull stick (26) are connected with the inner wall rotation of experiment box (2), and the junction of bull stick (26) and experiment box (2) is not in the tip of bull stick (26), the one end rotation of bull stick (26) is connected with trigger lever (261), the other end rotation of bull stick (26) is connected with transfer line (262), the one end that bull stick (26) was kept away from to trigger lever (261) is articulated with fixed block (411), the one end rotation that bull stick (262) was kept away from to transfer line (26) is connected with gangbar (521), one end that bull stick (521) was kept away from transfer line (262) is connected with fixed link (52) with fixed link.

3. The early crack resistance concrete performance test device according to claim 2, wherein: the experiment box (2) is close to the lateral wall of auxiliary block (5) and has seted up spout (27), and sliding connection has slider (53) in spout (27), and spout (27) and auxiliary block (5) fixed connection are stretched out to one end of slider (53), and telescopic link (271) have set firmly between the inner wall of slider (53) and experiment box (2) in spout (27) department.

4. An early crack resistance concrete performance test apparatus according to claim 3, wherein: a second spring (272) is fixed between the sliding block (53) and the inner wall of the experiment box (2) at the sliding groove (27).

5. The early crack resistance concrete performance test device according to claim 2, wherein: a first ball (31) is hinged to a corner ball of the clamping block (3) close to the auxiliary block (5), and a first rolling groove (54) in rolling fit with the first ball (31) is formed in the position of the second inclined surface (51) of the auxiliary block (5).

6. The early crack resistance concrete performance test device according to claim 1, wherein: the clamping block (3) is provided with a through groove (32) towards the side wall of the guide rod (22), the inner wall of the clamping block (3) at the through groove (32) is fixedly provided with a guide block (33), the side wall of the guide rod (22) is provided with a guide groove (221) which is in sliding fit with the guide block (33), and the guide groove (221) does not penetrate through the end surfaces of the two ends of the guide rod (22).

7. The early crack resistance concrete performance test device according to claim 1, wherein: a second ball (34) is hinged to a corner ball of the clamping block (3) close to the trigger block (41), and a second rolling groove (414) in rolling fit with the second ball (34) is formed in the first inclined surface (412) of the trigger block (41).

8. The early crack resistance concrete performance test device according to claim 1, wherein: one end of the threaded rod (4) far away from the trigger block (41) is fixedly provided with a knob (42).