CN215179177U

CN215179177U - Rock compressive strength measuring device

Info

Publication number: CN215179177U
Application number: CN202121190205.2U
Authority: CN
Inventors: 段星星
Original assignee: Wuhan Building Materials Geological Engineering Survey Institute Co ltd
Current assignee: Wuhan Building Materials Geological Engineering Survey Institute Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-14
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a rock compressive strength measuring device, which comprises an upper pressing plate and a lower pressing plate, wherein a rock to be measured is placed between the upper pressing plate and the lower pressing plate, a mechanical clamp is arranged in a space between the upper pressing plate and the lower pressing plate, the mechanical clamp is close to the upper surface of the lower pressing plate, the mechanical clamp in an initial state is positioned on the left side of the lower pressing plate, and the mechanical clamp moves rightwards along the central line of the lower pressing plate under the action of a compression cylinder; the right end of the lower pressing plate is fixedly connected with a vertical baffle, a pressure sensor and a distance sensor are mounted on the mechanical clamp, and the distance sensor detects the distance from the mechanical clamp to the baffle; the mechanical clamp comprises two sliding blocks, the two sliding blocks are both fixedly connected with a chuck, and the two sliding blocks move relatively or back to back through a motor; the pressure sensor, the distance sensor, the motor and the compression cylinder are all electrically connected. The utility model discloses the position that has the automatic adjustment rock that awaits measuring reachs the holding down plate central point and puts the function, saves the process of manpower adjustment, makes the adjustment more accurate, and is consuming time shorter, shortens test time.

Description

Rock compressive strength measuring device

Technical Field

The utility model relates to a rock strength measurement device especially relates to a rock compressive strength measurement device.

Background

When a rock test piece is placed, the conventional rock compressive strength measuring device needs to be manually adjusted according to marks or scales on the lower pressing plate so as to ensure that the rock test piece is positioned at the center of the upper pressing plate and the lower pressing plate. However, manual adjustment is greatly influenced by human factors, and problems of inaccurate placement, long time consumption and the like easily occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcomings existing in the technology, the utility model provides a rock compressive strength measuring device.

In order to solve the technical problem, the utility model discloses a technical scheme is: a rock compressive strength measuring device comprises an upper pressing plate and a lower pressing plate, wherein a rock to be measured is placed between the upper pressing plate and the lower pressing plate, a mechanical clamp is arranged in a space between the upper pressing plate and the lower pressing plate, the mechanical clamp is close to the upper surface of the lower pressing plate, the mechanical clamp in an initial state is positioned on the left side of the lower pressing plate, and the mechanical clamp moves rightwards along the center line of the lower pressing plate under the action of a compression cylinder; the right end of the lower pressing plate is fixedly connected with a vertical baffle, a pressure sensor and a distance sensor are mounted on the mechanical clamp, and the distance sensor detects the distance from the mechanical clamp to the baffle;

the mechanical clamp comprises two sliding blocks, the two sliding blocks are both fixedly connected with a chuck, and the two sliding blocks move relatively or back to back through a motor; the pressure sensor, the distance sensor, the motor and the compression cylinder are all electrically connected.

Furthermore, the two sliding blocks are linked with the motor through a crank rod.

Furthermore, the middle part of the mechanical clamp is hinged with a rotating block, the middle part of the rotating block is provided with a driving hole, and an output shaft of a motor is connected in the driving hole in a transmission manner; two ends of the rotating block are symmetrically hinged with linkage curved bars, and the other ends of the two linkage curved bars are correspondingly hinged with the two sliding blocks one by one.

Further, the rotating block is in a shuttle shape.

Furthermore, the linkage curved rod is in an arc shape protruding towards the direction of the driving hole.

Furthermore, the mechanical clamp comprises a clamp body, the rotating block is hinged on the clamp body, and the clamp body is fixedly connected with a piston rod of the compression cylinder.

The utility model discloses the position that has the automatic adjustment rock that awaits measuring reachs the holding down plate central point and puts the function, has saved the process of manpower adjustment, makes the adjustment more accurate, and is consuming time shorter, shortens test time.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic structural view of the mechanical clip.

In the figure: 1. a lower pressing plate; 2. rock to be detected; 3. mechanically clamping; 4. a baffle plate; 5. a slider; 6. a chuck; 7. rotating the block; 8. a drive aperture; 9. a linking curved bar; 10. a clip body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The rock compressive strength measuring device shown in figure 1 comprises an upper pressing plate and a lower pressing plate 1, wherein a rock to be measured 2 is placed between the upper pressing plate and the lower pressing plate, during use, the upper pressing plate presses down to cause pressure to the rock to be measured, and the pressure of the rock when cracks are generated to complete fragmentation is recorded, so that the compressive strength of the rock is calculated.

A mechanical clamp 3 is arranged in a space between the upper pressure plate and the lower pressure plate, the mechanical clamp is close to the upper surface of the lower pressure plate, the mechanical clamp in an initial state is positioned on the left side of the lower pressure plate 1, and the mechanical clamp moves rightwards along the central line of the lower pressure plate under the action of the compression cylinder; the right-hand member fixedly connected with of holding down plate erects baffle 4, and last pressure sensor and the distance sensor of installing of mechanical clamp detect the distance that mechanical clamp was pressed from both sides to the baffle.

As shown in figure 2, the mechanical clamp comprises two sliding blocks 5, the two sliding blocks are fixedly connected with a chuck 6, and the two sliding blocks move relatively or oppositely through a motor to realize the holding and releasing of the rock to be tested. The pressure sensor, the distance sensor, the motor and the compression cylinder are all electrically connected.

The mechanical clamp comprises a clamp body 10, a rotating block 7 is hinged to the middle of the clamp body, the rotating block is in a shuttle shape, a driving hole 8 is formed in the middle of the rotating block, and an output shaft of a motor is connected in the driving hole in a transmission mode; two ends of the rotating block are symmetrically hinged with linkage curved rods 9, the linkage curved rods are in an arc shape protruding towards the direction of the driving hole, and the other ends of the two linkage curved rods are hinged with the two sliding blocks in a one-to-one correspondence mode.

The front of the clamp body is provided with a slide block and a clamping head, and the back of the clamp body is fixedly connected with a piston rod of the compression cylinder.

The utility model discloses a method of use and principle do:

placing the rock 2 to be measured on the lower pressure plate 1 along with the baffle 4, starting the compression cylinder at the moment, driving the mechanical clamp to move rightwards from the left side of the lower pressure plate by the compression cylinder, and opening the two clamps to the maximum in the moving process.

When the mechanical clamp moves to the rock to be detected, the mechanical clamp is in contact with the rock to be detected, the pressure sensor is triggered, the pressure sensor sends a signal to the compression cylinder, the compression cylinder stops working, and the mechanical clamp is not driven to move rightwards continuously. The pressure sensor sends signals to the motor at the same time, and the motor rotates anticlockwise to enable the two chucks to contract and hold the rock to be measured.

Because the interlock curved bar of two chucks is mutual symmetry, make the speed and the distance that two chucks removed unanimous, so just can remove the rock piece that squints around relative holding down plate central line to holding down the plate central line and align with the central line of holding down plate the width mid point of rock piece, so just realized the automatic adjustment of fore-and-aft direction (width direction).

When the mechanical clamp contacts the surface of the rock to be measured, the distance between the mechanical clamp and the baffle at the moment is measured by the distance sensor to be l, and at the moment, l is the length of the rock to be measured. Because the center of the lower pressing plate is unchanged, and the distance L from the center of the lower pressing plate to the baffle is fixed, the distance of the rock carried by the mechanical clamp moving leftwards can be calculated, so that the middle point of the length of the rock to be detected is positioned at the center of the lower pressing plate.

Specifically, when the length L of the rock to be detected is less than or equal to L, the mechanical clamp carries the rock to be detected to move L-L/2 distances to the left; and when the length L of the rock to be detected is greater than L, the mechanical clamp carries the rock to be detected to move leftwards by L-L/2 distances.

After the middle point of the rock to be measured is superposed with the central position of the lower pressing plate, namely the rock to be measured reaches the central position of the lower pressing plate, the automatic adjustment of the rock to be measured on the lower pressing plate is completed. Subsequent pressure tests may be performed.

The above-mentioned embodiment is not the limit of the present invention, the present invention is not limited to the above example, and the technical personnel in the technical field are in the present invention discloses a change, modification, addition or replacement made within the technical solution scope, also all belong to the protection scope of the present invention.

Claims

1. The utility model provides a rock compressive strength measuring device, includes top board and holding down plate (1), places rock (2) that await measuring between top board and the holding down plate, its characterized in that: a mechanical clamp (3) is arranged in a space between the upper pressure plate and the lower pressure plate, the mechanical clamp is close to the upper surface of the lower pressure plate, the mechanical clamp in an initial state is positioned on the left side of the lower pressure plate (1), and the mechanical clamp moves rightwards along the central line of the lower pressure plate under the action of a compression cylinder; the right end of the lower pressing plate is fixedly connected with a vertical baffle (4), a pressure sensor and a distance sensor are mounted on the mechanical clamp, and the distance sensor detects the distance from the mechanical clamp to the baffle;

the mechanical clamp comprises two sliding blocks (5), the two sliding blocks are both fixedly connected with a chuck (6), and the two sliding blocks move relatively or oppositely through a motor; the pressure sensor, the distance sensor, the motor and the compression cylinder are all electrically connected.

2. The compressive rock strength measuring device according to claim 1, wherein: the two sliding blocks are linked with the motor through a crank rod.

3. The compressive rock strength measuring apparatus according to claim 2, wherein: the middle part of the mechanical clamp is hinged with a rotating block (7), the middle part of the rotating block is provided with a driving hole (8), and an output shaft of a motor is connected in the driving hole in a transmission manner; two ends of the rotating block are symmetrically hinged with linkage curved bars (9), and the other ends of the two linkage curved bars are correspondingly hinged with the two sliding blocks one by one.

4. A compressive rock strength measuring apparatus according to claim 3, wherein: the rotating block is in a shuttle shape.

5. The compressive rock strength measuring apparatus according to claim 4, wherein: the linkage curved rod is in an arc shape protruding towards the direction of the driving hole.

6. The compressive rock strength measuring apparatus according to claim 5, wherein: the mechanical clamp comprises a clamp body (10), wherein the rotating block is hinged on the clamp body, and the clamp body is fixedly connected with a piston rod of the compression cylinder.