WO2021217719A1 - Elasticity modulus meter - Google Patents

Abstract

An elasticity modulus meter, comprising: a base (1); at least two clamping devices, each clamping device comprising a clamping gap (21) for concrete test pieces to pass through and a clamping assembly for clamping the concrete test pieces, and the clamping gaps (21) of the two clamping devices being coaxially provided; at least two adjustment structures, each adjustment structure comprising an adjustment rod (10), an adjustment block (8) and at least two connecting rods (7), the adjustment block (8) being sleeved on the adjustment rod (10), the adjustment rod (10) being provided on the base (1), the at least two connecting rods (7) being connected to the adjustment block (8), each of the at least two connecting rods (7) being detachable from a respective clamping device, and the at least two adjustment structures being connected, at different positions, to the clamping devices; and a measurement structure, the measurement structure being connected between the two clamping devices.

Description

Elastic modulus tester

This application claims the priority of the Chinese patent application filed on April 29, 2020 with the application number 202010361254.1 and the name "Elastic Modulus Tester", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of engineering technology, in particular to an elastic modulus tester.

Background technique

The concrete test block elastic modulus tester currently in use is composed of a lower mounting ring, a tightening screw, an upper mounting ring, a detector mounting seat, a micro-deformation detector, a tightening bolt and a spacer. The current basic method is: the size of the rectangular test block: 150X150X300, first use the height gauge to draw the positioning line on the concrete test block, and then put the lower mounting ring into the outer side of the concrete test block, and align it with a set screw to draw it. Tighten the cross center of the positioning line. When tightening, ensure that the lower mounting ring coincides with the center of the test block, and then use the same method to install the upper mounting ring on the center of the upper positioning line, and install the detector mount on the upper mounting ring On the upper side, the micro-deformation detector is installed on the mounting seat of the detector, and the bolt is tightened so that the lower end of the micro-deformation detector points to the cushion block of the lower mounting seat.

However, the existing device needs to assemble the parts one by one on the concrete test block according to the above steps for each measurement, and then measure the elastic modulus of the concrete test piece, which makes the operation during each measurement too complicated and the pre-measurement operation is too complicated. The assembly time is also longer.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The main purpose of this application is to propose an elastic modulus tester, which aims to reduce the assembly time of concrete specimens before measurement.

In order to achieve the above-mentioned purpose, an elastic modulus tester proposed in this application is used for testing concrete specimens, and the elastic modulus tester includes:

Base

At least two clamping devices, the clamping device includes a clamping gap for the concrete specimen to pass through and a clamping assembly for clamping the concrete specimen, the clamping of the two clamping devices Coaxial gap setting;

At least two adjustment structures. The adjustment mechanism includes an adjustment rod, an adjustment block, and at least two connecting rods. The adjustment block passes through the adjustment rod, the adjustment rod is set on the base, and the at least Two connecting rods are connected to the adjusting block, the at least two connecting rods are respectively detachable from one of the clamping devices, and the at least two adjusting structures are connected to different positions of the clamping device;

The measuring structure is connected between the two clamping devices and is used to test the position change between the two clamping devices.

In an embodiment, the adjustment structure further includes a sliding plate, the sliding plate is provided on the base, and the adjusting rod abuts on the sliding plate and is rotatably connected with the sliding plate.

In an embodiment, the sliding plate is provided with a limit seat, a limit cavity is opened inside the limit seat, and the opening of the limit cavity is located on the side of the limit seat away from the sliding plate, so The size of the opening is smaller than the size of the limiting cavity, one end of the adjusting rod is provided with a rotating ring, the rotating ring is installed in the limiting cavity, and the size of the rotating ring is larger than the size of the opening .

In an embodiment, the connecting rod is provided with a positioning sleeve at one end connected to the clamping device, the cylinder mouth of the positioning sleeve faces the clamping device, and the clamping device is connected to the connecting rod. The connecting position is convexly provided with a positioning rod, and the positioning rod is detachably connected with the positioning sleeve.

In an embodiment, the adjustment structure further includes a support rod and at least two sliding sleeves, one end of the support rod is connected to the base, the other end extends away from the base, and the two sliding sleeve sleeves It is arranged on the supporting rod, and each sliding sleeve is connected to one connecting rod, wherein the supporting rod is slidably connected to the base.

In an embodiment, the base is provided with at least two clamping grooves, the clamping grooves are arranged corresponding to the supporting rods, the clamping blocks are arranged in the clamping grooves, and one end of the supporting rod is connected to the supporting rod. The clamping block is connected, and the clamping groove extends in the opposite direction of the two adjusting structures, so as to realize the horizontal sliding of the adjusting structure and the base.

In one embodiment, the clamping assembly includes a box body, at least two sets of elastic members, and at least two sets of clamping plates. The box body is provided with a cavity, and the fixed end of each set of the elastic member is connected to the cavity. The inner wall of the body is connected, the free end is connected to the clamping plate, the at least two sets of elastic members are arranged at different positions of the cavity, and the clamping plate is formed between the clamping plates connected on the at least two sets of elastic members. gap.

In an embodiment, the elastic member includes a first hinge rod and a second hinge rod, the free ends of the first hinge rod and the second hinge rod are simultaneously connected to the clamping plate, and the first hinge rod The fixed ends of the hinge rod and the second hinge rod are connected to the inner wall of the cavity of the box, and the fixed ends of the first hinge rod and the second hinge rod face the two cavities of the cavity respectively口, the clamping assembly further includes a driving member, the driving member abuts against the fixed end of the first hinge rod, and the driving member drives the first hinge rod to move to the second hinge rod. The first hinge rod moves away from the second hinge rod.

In an embodiment, the driving member includes a collar and a sliding ring, the collar is screwed to the cavity, and the sliding ring is disposed on a side of the collar located in the cavity, and The sliding ring abuts against the first hinge rod.

In an embodiment, the side of the clamping plate facing away from the elastic member is a clamping surface, and the shape of the clamping surface is adapted to the outer peripheral shape of the concrete specimen.

The technical solution of the present application is to provide a clamping device on the base, wherein the clamping device includes a clamping gap for the concrete specimen to pass through and a clamping assembly for clamping the concrete specimen. The clamping gap of the clamping device is set coaxially. When the compression piece pressurizes the concrete specimen, the position change between the two clamping components after the pressure is measured through the measuring structure to test the concrete specimen The modulus of elasticity realizes the quick positioning and clamping of the concrete specimen, which is convenient and quick, and improves the detection efficiency. In order to facilitate the disassembly and assembly of the clamping assembly, the clamping assembly is detachably connected to the two adjustment structures. The at least two connecting rods are respectively detachable from one of the clamping devices. In order to simultaneously control the disassembly and assembly of the two clamping devices, the at least two connecting rods are connected to the adjusting block.

The beneficial effects of the invention

Brief description of the drawings

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structure shown in these drawings.

Figure 1 is a schematic diagram of the structure of the elastic modulus tester of the application;

Figure 2 is a schematic diagram of the structure of the concrete test piece installed with the elastic modulus tester of the application;

Figure 3 is a partial enlarged view of A in Figure 1;

Figure 4 is a partial enlarged view of B in Figure 1;

Figure 5 is a schematic diagram of the structure of the base of the application.

Attached icon number description:

[Table 1]

Label	name	Label		name
1	Base	16	Positioning rod
2	Card slot	17	Box
3	wheel	18	Collar
4	Card connection block	19	handle
5	Support rod	20	Slip ring
6	Sliding sleeve	twenty one	Clamping gap
7	Connecting rod	twenty two	Fixed rod
8	Adjustment block	twenty three	Dial indicator
9	handle	twenty four	Touch rod
10	Adjusting lever	25	Touch block
11	Limit seat	26	Limit sleeve
12	Rotating ring	27	Limit rod
13	Sliding plate	28	First articulated rod
14	Screw	29	Second articulated rod
15	Positioning sleeve	30	Clamping plate

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Invention embodiment

Embodiments of the present invention

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of this application, the directional indication is only used to explain that it is in a specific posture ( As shown in the figure), the relative positional relationship and movement conditions of the components under the following, if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as instructions or implications Its relative importance or implicitly indicates the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this application.

In order to facilitate the testing of the elastic modulus of concrete specimens, this application proposes an elastic modulus tester, which includes:

Base 1;

At least two clamping devices, the clamping device includes a clamping gap 21 for the concrete specimen to pass through and a clamping assembly for clamping the concrete specimen, the clamps of the two clamping devices The holding gap 21 is arranged coaxially;

At least two adjustment structures. The adjustment mechanism includes an adjustment rod 10, an adjustment block 8 and at least two connecting rods 7. The adjustment block 8 passes through the adjustment rod 10, and the adjustment rod 10 is arranged on the On the base 1, the at least two connecting rods 7 are connected to the adjusting block 8, the at least two connecting rods 7 are detachable from one of the clamping devices, and the at least two adjusting structures are connected to the Different positions of the clamping device;

The measuring structure is connected between the two clamping devices and is used to test the position change between the two clamping devices.

Specifically, one side of the base 1 is provided with an opening that is recessed toward the opposite side, so that the base 1 is U-shaped, which facilitates the concrete specimen to enter the inside of the base 1 from the opening and pass through. The clamping device clamps the concrete specimen, wherein the tangent length of the opening is greater than the width of the concrete specimen, the central axis of the opening can accommodate the concrete specimen, and the opening may be At least three wheels 3 are welded to the bottom of the base 1 to facilitate the transportation and movement of the elastic modulus tester.

The base 1 is provided with at least two clamping grooves 2, and the two clamping grooves 2 are arranged opposite to each other with the central axis of the opening as the center, and the clamping grooves 2 face away from the central axis of the opening. Extending, an adjustment structure is provided on the clamping groove 2, and the adjustment structure moves along the horizontal direction of the base 1 according to the setting track of the clamping groove 2.

The two clamping devices are arranged at the central axis of the opening of the base 1, so that the concrete specimen entering from the opening of the base 1 can be inserted into the clamping device, wherein the clamping device includes In the clamping gap 21 for the concrete specimen to pass through and the clamping component for clamping the concrete specimen, the two clamping components are arranged in the vertical direction of the base 1 and located at the opening of the base 1 On the central axis, after the clamping assembly is assembled, a clamping gap is formed inside. The clamping gap is used to clamp the concrete test piece. One, a plurality of the clamping components are arranged symmetrically to ensure that the concrete specimen is evenly stressed.

The clamping assembly includes a box body 17 and a collar 18. The box body 17 is provided with a cavity, and the cavity penetrates the box body 17. In the present application, the cavity is a cylindrical cavity. , So that after the collar 18 is sleeved inside the box body 17, the collar 18 can rotate in the cavity, and the outer shape of the box body 17 can be cylindrical, square or polygonal, However, the shape of the cavity in the box 17 is a cylindrical cavity, the collar 18 is connected to one end of the cavity, and the outer circumference of the collar 18 is connected to the cavity wall of the cavity. For clamping, the collar 18 is an annular body, the outer circumference of the collar 18 is provided with an external thread, the inner circumference of the cavity is provided with an internal thread, and the external thread of the collar 18 is connected to the The internal thread of the cavity is screwed to make the collar 18 move in the cavity, wherein when the collar 18 is inserted into the cavity, the inner ring of the collar 18 and the cavity The body communicates with and forms a clamping cavity. In this application, the height of the collar 18 is less than the height of the box body 17, specifically, the difference between the height of the collar 18 and the height of the box body 17 is 1 In the range of ~2cm, in this application, the inner diameter of the cavity is between 0.4m-0.5m.

In order to facilitate the operation and rotation of the collar 18, a pair of symmetrically arranged handles 19 are provided on the outer periphery of one end of the collar 18 away from the box body 17, and the handles 19 face away from the outer periphery of the collar 18. The collar 18 extends in the direction, and the extending direction of the handle 19 is at a right angle or an acute angle to the outer circumference of the collar 18, so that the handle 19 can be rotated by hand, wherein the handle 19 may be rod-shaped , 9-shaped handle, curved, etc.

The clamping assembly also includes at least two sets of elastic members and at least two sets of clamping plates 30. The fixed end of each set of elastic members abuts against the inner wall of the cavity, and the free end of each set of elastic members is connected to the inner wall of the cavity. The clamping plate 30 is connected, and is screwed to the box body 17 through the collar 18, so that the inner wall of the box body 17 is shortened and the elastic member is compressed, so that the elastic member is displaced and transformed, and The compression force received pushes the clamping plate 30 to move, a plurality of the clamping plates 30 enclose a clamping gap 21, the clamping gap 21 is used for the concrete specimen to pass through, the clamping plate 30 squeeze the concrete specimen with the received compressive force.

Specifically, the elastic member includes at least a first hinge rod 28 and a second hinge rod 29, the first hinge rod 28 and the second hinge rod 29 are symmetrically arranged according to the horizontal line of the box body 17, wherein, One end of the first hinge rod 28 is in contact with the collar 18, the other end of the first hinge rod 28 is connected to the clamping plate 30, and one end of the second hinge rod 29 is connected to the box. The inner wall of the body 17 is connected, the other end of the second hinge rod 29 is connected to the clamping plate 30, and the first hinge rod 28 and the second hinge rod 29 are connected on the clamping plate 30 The distance is less than the depth of the cavity. When the collar 18 is screwed to the box body 17, the inner wall of the box body 17 is shortened so that the first hinge rod 28 moves toward the second hinge rod 29 , The compression of the first hinge rod 28 and the second hinge rod 29 generates a compressive force to push the clamping plate 30 to move to the central axis of the cavity, and the clamping plate 30 is attached to the concrete On the specimen, the clamping plate 30 squeezes the concrete specimen under the compression force, and then tests whether the concrete specimen undergoes elastic deformation when squeezed; the collar 18 and the elastic member A sliding ring 20 is provided at the abutment, and the sleeve ring 18 and the sliding ring 20 constitute a driving member, and the driving member is used to drive the elastic member to perform elastic movement, wherein the sliding ring 20 and the sleeve The ring 18 abuts, and one end of the first hinge rod 28 is connected to the sliding ring 20, so that when the collar 18 is screwed to the box body 17, the elastic member will not contact the collar 18 Synchronous rotation to avoid material loss.

In addition, the first hinged rod 28 and the second hinged rod 29 are located at one end connected to the inner wall of the box body 17 with a limiting sleeve 26 and a limiting rod 27, and the limiting sleeve 26 is connected to the The limit rod 27 is sleeved. When the first hinge rod 28 and the second hinge rod 29 move relative to each other, the limit rod 27 extends into the sleeve, and the first hinge rod 28 is connected to the sleeve. When the second hinge rod 29 moves away from each other, the limit rod 27 extends out of the sleeve to cooperate with the limit rod 27 through the limit sleeve 26 to prevent the first hinge The movement track of the rod 28 and the second hinge rod 29, wherein when the limit rod 27 extends to the bottom of the limit sleeve 26, the limit sleeve 26 and the limit rod The length of the connection 27 is greater than or equal to the distance that the first hinge rod 28 and the second hinge rod 29 are connected on the clamping plate 30, and the limit rod 27 extends to the limit sleeve 26 In the case of the inner barrel opening, the length of the connection between the limiting sleeve 26 and the limiting rod 27 is less than or equal to the height of the box body 17.

The clamping plate 30 is made of hard aluminum alloy, and the side of the clamping plate 30 facing away from the elastic member is a clamping surface, and the shape of the clamping surface is compatible with the outer peripheral shape of the concrete specimen So that the clamping plate 30 can match the shape of various concrete specimens that need to be tested, wherein the shape of the concrete specimen can be a square column, a cylinder, or a polygonal column to increase the elastic modulus Compatibility of the tester, when the shape of the concrete specimen is a square column, the clamping plate 30 presses the side of the concrete specimen into a flat plane, and when the shape of the concrete specimen is a cylinder , The clamping plate 30 squeezes the concrete specimen on one side that is in the shape of an arc that fits the outer circumference of the cylinder. When the shape of the concrete specimen is a polygonal column, the clamping plate 30 squeezes One side of the concrete test piece has a shape that fits a certain side of the outer periphery of the polygonal column and a surface adjacent to the side.

Of course, in other embodiments, the clamping assembly includes a box body 17, an elastic member, and a clamping plate 30. The elastic member may be a spring, and one end of the spring is connected to the inner wall of the cavity of the box body 17. , The other end of the spring is connected to the clamping plate 30, and the clamping plate 30 is provided with an inclined surface on the side facing away from the spring, the inclined surface is arranged in the penetration direction of the concrete specimen, and the inclined surface Inclined in the direction of the inner wall of the cavity, the inclined surface has a guide to guide the concrete test piece into the clamping gap 21, the spring deforms elastically, and then compresses the spring, and the spring will The compression force pushes the clamping plate 30 to move, and the clamping plate 30 squeezes the concrete specimen with the received compression force.

The measurement structure includes a dial gauge 23, a touch rod 24 and a touch block 25. The measurement structure includes a dial gauge 23, a touch rod 24 and a touch block 25. One end of the dial gauge 23 is provided with The fixed rod 22 is connected with the clamping device at the upper end, the other end of the dial indicator 23 is connected with a touch rod 24, and the clamping device at the lower end is connected with a touch probe Block 25, the touch block 25 is arranged opposite to the touch rod 24, wherein the ends of the two boxes 17 without the collar 18 are opposite to each other, and the measuring structure is arranged on the two boxes 17, one end of the dial gauge 23 is connected to the box body 17 at the upper end, and the box body 17 at the lower end is connected to a touch block 25, which is connected to the touch block 25. When the measuring rod 24 is in contact, through the displacement change between the touching block 25 and the touching rod 24, it can be obtained whether the concrete specimen has a modulus of elasticity after being squeezed by the two holding devices. Change, under normal circumstances, the dial gauge 23, the touch rod 24 and the touch block 25 are located in the same vertical direction, the pointer of the dial gauge 23 is located in the middle, if the concrete specimen is squeezed Later, the pointer of the dial gauge 23 has shifted, indicating that the concrete specimen has undergone elastic deformation, and the offset value of the dial gauge 23 is used to calculate the elastic modulus. If the concrete specimen is extruded, If the pointer of the dial gauge 23 remains unchanged or is in the middle position, the concrete specimen has not undergone elastic deformation.

The adjustment structure is used to adjust the movement of the clamping device in the vertical direction of the base 1, the adjustment structure is arranged on the base 1, and the two adjustment structures are symmetrically arranged on the clamp. Holding device, and the holding device is slidably connected to the adjusting structure, so that the holding device can move in the vertical direction of the base 1, and one end of the adjusting structure is slidably connected to the base 1 , So that the adjustment structure moves in the horizontal direction of the base 1. Of course, in other embodiments, the adjustment structure may be provided in multiple, and multiple adjustment structures surround the clamping device.

Specifically, the adjustment structure includes a support rod 5 and at least two sliding sleeves 6, the two sliding sleeves 6 respectively pass through the support rod 5, and the two sliding sleeves 6 are connected to one The box body 17 is connected, one end of the support rod is connected to the base, the other end extends away from the base, the support rod 5 is slidably connected to the base 1, and the support rod 5 is vertically arranged at On the base 1, by adjusting the position of the two sliding sleeves 6 on the support rod 5, the sliding sleeve 6 drives the connected clamping device to move, thereby adjusting the clamping device in position The position of the base 1 in the vertical direction.

Wherein, the outer periphery of the sliding sleeve 6 is provided with a positioning sleeve 15, the cylinder mouth of the positioning sleeve 15 faces the clamping device, and the position where the box body 17 is connected to the connecting rod 7 is convexly provided with a positioning sleeve. The positioning rod 16 is detachably connected to the positioning sleeve 15, the positioning rod 16 protrudes from the outer periphery of the box body 17, and the protruding length of the positioning rod 16 is the same as that of the positioning sleeve The inner depth of the barrel 15 is matched, and the positioning rod 16 extends into the positioning sleeve 15, so that the sliding sleeve 6 is positioned and detachably connected with the box body 17. When the box body 17 is removed When the adjustment structure is controlled to move in the horizontal direction, the positioning rod 16 and the positioning sleeve 15 are separated, and the positioning rod 16 cooperates with the positioning sleeve 15 so as to interact with the elastic modulus measuring instrument. .

The base 1 is provided with at least two clamping grooves 2, and the clamping grooves 2 are arranged corresponding to the supporting rods 5, and each supporting rod 5 is correspondingly provided with a subsequent clamping groove 2. Specifically, the clamping grooves 2 are The connecting groove 2 extends in a direction opposite to the two adjustment structures, a connecting block 4 is provided in the clamping groove 2, and one end of the supporting rod 5 is connected with the clamping block 4, so that the supporting rod 5 Cooperating with the clamping block 4, it can move in the clamping slot 2 to realize the horizontal movement of the adjusting structure and the base 1, wherein, in order to make the clamping block 4 move in the clamping slot 2. The internal connection is stronger. The clamping groove 2 can be a dovetail groove, the dovetail of the dovetail groove is located at the bottom of the clamping groove 2, and the shape of the clamping block 4 is the same as that of the clamping groove 2. That is, the clamping block 4 is a dovetail block. Of course, the clamping slot 2 can be other polygonal shapes, and the specific location of the clamping slot 2 is the notch of the clamping slot 2. It is smaller than the inner diameter of the clamping groove 2 to ensure that the clamping block 4 does not easily fall from the clamping groove 2.

In order to ensure that the set clamping device can move synchronously, the two sleeves arranged on the same support rod 5 need to move synchronously, and in this application, an adjusting block 8 and at least two connecting rods 7 are provided. 7 respectively connect the two sliding sleeves 6 on the side facing away from the outer periphery of the box body 17, the adjusting block 8 passes through the adjusting rod 10, and the at least two connecting rods 7 are connected to the adjusting rod 10. Block 8 is connected. The number of the connecting rods 7 is determined according to the number of the boxes 17 to ensure that the two boxes 17 establish a synchronous connection relationship. You only need to move the adjusting block 8 on the adjusting rod 10. Position, the adjusting block 8 drives the two connecting rods 7 to move, so that the two boxes 17 can move synchronously.

In order to more accurately control the movement of the connecting rod 7 in the vertical direction of the base 1, the end of the connecting rod 7 away from the sliding sleeve 6 is connected to the adjusting block 8, and the adjusting block 8 is An adjusting rod 10 is penetrated, and the adjusting block 8 is connected with the adjusting rod 10 by a threaded manner. The thread shape of the adjusting block 8 is adapted to the thread shape of the adjusting rod 10. The rod 10 further adjusts the position of the adjusting block 8 on the adjusting rod 10, thereby controlling the movement of the connecting rod 7, the sliding sleeve 6 and the clamping device in the vertical direction of the base 1, and The adjustment block 8 is also provided with a handle 9 to facilitate manual control of the adjustment block 8 to move.

In order to stabilize the adjusting rod 10, the adjusting structure further includes a sliding plate 13 attached to the base 1, and the sliding plate 13 is fixedly connected to the base 1 by screws 14 , The adjusting rod 10 abuts on the sliding plate 13, and the adjusting rod 10 rotates on the sliding plate 13, when the adjusting rod 10 rotates, the sliding plate 13 and the base 1 The screw 14 is fixedly connected. When the adjusting structure is moved horizontally, the screw 14 is removed, and the supporting rod 5 drives the adjusting rod 10 and the sliding plate 13 to slide on the base 1.

The sliding plate 13 is provided with a limit seat 11, a limit cavity is opened inside the limit seat 11, and the opening of the limit cavity is located on the side of the limit seat 11 away from the sliding plate 13. One end of the adjusting rod 10 is provided with a rotating ring 12, the rotating ring 12 is installed in the limiting cavity, and the size of the rotating ring is larger than the size of the opening. When the adjusting rod 10 is operated to rotate, The adjusting rod 10 drives the rotating ring 12 to rotate in the limiting seat 11, wherein the outer peripheral shape of the rotating ring 12 is adapted to the shape of the cavity wall of the limiting cavity, so that the limiting seat 11 can block the rotating ring 12, and the size of the opening is smaller than the size of the limiting cavity, so as to prevent the rotating ring 12 from slipping out of the limiting cavity.

The technical solution of the present application is to provide a clamping device on the base 1, wherein the clamping device includes a clamping gap 21 for the concrete specimen to pass through and a clamping assembly for clamping the concrete specimen, two The clamping gap 21 of the clamping device is arranged coaxially. When the pressing member pressurizes the concrete test piece, the position change between the two clamping components after pressing is measured through the measuring structure to test the concrete. The elastic modulus of the test piece enables quick positioning and clamping of the concrete test piece, which is convenient and quick, and improves the detection efficiency. In order to facilitate the disassembly and assembly of the clamping assembly, the clamping assembly is detachably connected with the two adjustment structures. Wherein, the at least two connecting rods 7 are detachable from one of the clamping devices. In order to simultaneously control the disassembly and assembly of the two clamping devices, the at least two connecting rods 7 are connected to the adjusting block 8.

The above are only the preferred embodiments of the application, and do not limit the scope of the application. Under the concept of the application, the equivalent structure transformation made by the content of the specification and drawings of the application, or directly/indirectly used in Other related technical fields are included in the scope of patent protection of this application.

Claims (10)

1. An elastic modulus tester for testing concrete specimens, wherein the elastic modulus tester includes:

   Base

   At least two clamping devices, the clamping device includes a clamping gap for the concrete specimen to pass through and a clamping assembly for clamping the concrete specimen, the clamping of the two clamping devices Coaxial gap setting;

   At least two adjustment structures. The adjustment mechanism includes an adjustment rod, an adjustment block, and at least two connecting rods. The adjustment rod is provided on the base, the adjustment block passes through the adjustment rod, and the at least Two connecting rods are connected to the adjusting block, the at least two connecting rods are respectively detachable from one of the clamping devices, and the at least two adjusting structures are connected to different positions of the clamping device;

   The measuring structure is connected between the two clamping devices and is used to test the position change between the two clamping devices.
2. The elastic modulus measuring instrument according to claim 1, wherein the adjustment structure further comprises a sliding plate, the sliding plate is provided on the base, and the adjusting rod abuts against the sliding plate and interacts with The sliding plate is rotatably connected.
3. The elastic modulus tester according to claim 2, wherein the sliding plate is provided with a limit seat, a limit cavity is opened inside the limit seat, and the opening of the limit cavity is located away from the limit seat. On one side of the sliding plate, the size of the opening is smaller than the size of the limiting cavity, one end of the adjusting rod is provided with a rotating ring, the rotating ring is installed in the limiting cavity, and the rotating The size of the ring is larger than the size of the opening.
4. The elastic modulus measuring instrument according to claim 1, wherein the connecting rod is provided with a positioning sleeve at one end connected to the clamping device, and the cylinder mouth of the positioning sleeve faces the clamping device, so The position where the clamping device is connected to the connecting rod is convexly provided with a positioning rod, and the positioning rod is detachably connected to the positioning sleeve.
5. The elastic modulus tester according to claim 1, wherein the adjustment structure further comprises a support rod and at least two sliding sleeves, one end of the support rod is connected to the base, and the other end extends away from the base , The two sliding sleeves are sleeved on the supporting rod, and each sliding sleeve is connected to one connecting rod, wherein the supporting rod is slidably connected with the base.
6. The elastic modulus tester according to claim 5, wherein the base is provided with at least two clamping grooves, the clamping grooves are arranged corresponding to the support rods, and the clamping grooves are provided with clamping blocks One end of the support rod is connected with the clamping block, and the clamping groove extends in a direction opposite to the two adjustment structures, so as to realize the horizontal sliding of the adjustment structure and the base.
7. The elastic modulus tester according to any one of claims 1-6, wherein the clamping assembly includes a box body, at least two sets of elastic members and at least two sets of clamping plates, and a cavity is opened in the box body , The fixed end of each group of the elastic pieces is connected with the inner wall of the cavity, the free end is connected with the clamping plate, the at least two groups of elastic pieces are arranged at different positions of the cavity, and the at least two groups of elastic pieces are arranged at different positions of the cavity. The clamping gap is formed between clamping plates connected to the parts.
8. The elastic modulus tester according to claim 7, wherein the elastic member comprises a first hinge rod and a second hinge rod, and the free ends of the first hinge rod and the second hinge rod are at the same time as the free ends of the second hinge rod. The clamping plate is connected, the fixed ends of the first hinge rod and the second hinge rod are connected to the inner wall of the cavity of the box, and the fixed ends of the first hinge rod and the second hinge rod are respectively Facing the two cavity openings of the cavity, the clamping assembly further includes a driving member that abuts against the fixed end of the first hinge rod, and the driving member drives the first hinge rod to The second hinge rod moves or the first hinge rod moves away from the second hinge rod.
9. The elastic modulus tester according to claim 8, wherein the driving member includes a sleeve ring and a sliding ring, the sleeve ring is screwed to the cavity, and the sliding ring is arranged at the position where the sleeve ring is located. One side of the cavity, and the sliding ring abuts against the first hinge rod.
10. 9. The elastic modulus measuring instrument according to claim 9, wherein the side of the clamping plate facing away from the elastic member is a clamping surface, and the shape of the clamping surface is adapted to the shape of the outer circumference of the concrete specimen.

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