Fixing device for testing unloading strength of hybrid model rock

Abstract

The utility model belongs to the technical field of rock mechanics and engineering testing, and particularly relates to a fixing device for a hybrid model rock unloading strength test, which comprises a support seat, a test frame, two protective doors and the like, the test frame is fixedly connected at the top end of the support seat, and the two protective doors are distributed side by side and slidably arranged at the front part of the test frame. And each protective door is provided with two convex plates which are distributed left and right. By arranging a limiting and cleaning assembly, a third electric push rod, a first push plate and other parts are matched with one another, precise limiting and efficient cleaning before and after testing are achieved, before testing, the first push plate and a second push plate longitudinally limit the rock, it is guaranteed that the rock is stable during testing, and it is prevented that the data accuracy is affected due to movement; after testing, a third electric push rod and an electric sliding block respectively drive a first push plate and a material push plate to move, rock fragments can be quickly cleaned, the cleaning time is shortened, the efficiency is improved, the manual labor intensity and potential safety hazards are reduced, and the reliability of the device is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rock mechanics and engineering test technical field especially, it relates to a kind of fixing device for mixed model rock unloading strength test. BACKGROUND

[0002] Rock is the natural output by one or more minerals, with certain structure and configuration aggregate, also a few rocks are composed of glass or biological remains.Rock unloading strength test data is the important basis for establishing and verifying rock mechanics model.Through a large number of test data, the mechanical model that can accurately describe the unloading strength characteristics of rock can be established, and more reliable theoretical tool is provided for engineering design and analysis, when rock unloading strength is tested, it is often necessary to be fixed to rock by fixing device, to ensure the orderly progress of rock unloading strength test.

[0003] The conventional rock unloading strength test method is usually to directly apply shear force to rock from single fixing direction, in test preparation stage, rock is only fixed on test platform by single point, this fixing mode is extremely unstable, under the action of shear force, rock is prone to move, leading to large deviation of test data, seriously affect the accuracy and reliability of test result, and after test, for the large amount of rock debris remaining on test platform, manual cleaning is mainly relied on, manual cleaning not only consumes a lot of time, but also needs operator to close contact with sharp and sharp rock debris, be scratched slightly, there is higher security risk.

[0004] Therefore, a fixing device for mixed model rock unloading strength test is particularly needed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to overcome the shortcomings of conventional rock unloading strength test method, such as unstable single-point fixing of rock, easy to cause large deviation of test data, and high time consumption and security risk of manual cleaning of debris after test, the utility model provides a fixing device for mixed model rock unloading strength test.

[0006] This utility model is achieved through the following technical means: a fixing device for testing the unloading strength of a hybrid model rock, comprising a support base, a test frame, protective doors, a first electric push rod, a fixing block, a second electric push rod, a pressure block, a support plate, and a controller. The test frame is fixed to the top of the support base. Two protective doors are slidably arranged side by side at the front of the test frame. Each protective door is equipped with two protruding plates distributed on the left and right sides. The protruding plate on one side contacts the test frame, while the protruding plate on the other side is left at an appropriate distance from the test frame. The two protruding plates cooperate to form a stable sliding structure. A strip handle is provided on the protruding plate on one side. The first electric push rod is installed on the upper part of the test frame, and its telescopic end extends downward into the internal area of ​​the test frame. The fixed block is fixed to the telescopic end of the first electric push rod. Two second electric push rods are installed side by side in the lower inner area of ​​the test frame. Two pressure blocks are fixed to the telescopic ends of the two second electric push rods respectively, and the two pressure blocks are mirror-symmetrically distributed. The pressure block on one side is inverted L-shaped, and the pressure block on the other side is regular L-shaped. The fixed block is placed in the middle area directly above the two pressure blocks. The longitudinal length of the three is consistent. The support plate is fixed to the bottom inner position of the test frame. The fixed block is located above the support plate. The two pressure blocks are located on both sides of the support plate respectively. The controller is installed on the upper side of the test frame and is electrically connected to the first electric push rod and the second electric push rod. It also includes a limit and cleaning component, which is set in the lower inner area of ​​the test frame.

[0007] More preferably, the limiting and cleaning assembly includes a third electric push rod, a first push plate, a pusher plate, an electric slide rail, an electric slider, and a second push plate. The third electric push rod, which is electrically connected to the controller, is installed in the lower inner area of ​​the test frame. Its telescopic end is fixedly connected to the first push plate, and the first push plate has a Z-shaped structure, which fits the dynamic space formed between the two pressure blocks. The two electric slide rails are distributed and installed at the bottom inner end of the test frame. Each electric slider is slidably set on each electric slide rail. Both the electric slide rail and the electric slider are electrically connected to the controller. Each pusher plate is installed on each electric slider, and its bottom surface is in close contact with the bottom inner surface of the test frame. The second push plate is fixed between the two pusher plates.

[0008] More preferably, it also includes a collection frame and a contact plate. The collection frame is slidably placed inside the support base, and has two symmetrically distributed handles at its front. The contact plate is fixed to one side of the upper part of the collection frame, and the second push plate forms an abutting engagement with one side of the contact plate.

[0009] More preferably, it also includes a tampon, with a ring of tampon fixed to the edge of the first push plate, and the top surface of the support plate and the lowest point of the tampon are at the same level.

[0010] More preferably, the inclined plate is fixedly connected to the top of the support base and tightly contacts the lower part of the test frame, and one side of the inclined plate is designed as an inclined surface with a certain inclination angle, which is aligned with the area directly above the collection frame.

[0011] More preferably, the side surface of each pushing plate away from the side wall of the test frame is kept in the same longitudinal line with the side surface of the support plate.

[0012] Beneficial effects: 1. By setting the limiting and cleaning assembly, the third electric push rod, the first pushing plate and other components cooperate with each other to realize accurate limiting and efficient cleaning before and after testing. Before testing, the first pushing plate and the second pushing plate limit the rock in the longitudinal direction to ensure the stability of the rock during testing and prevent the movement from affecting the accuracy of the data. After testing, the third electric push rod and the electric sliding block respectively drive the first pushing plate and the pushing plate to move, which can quickly clean the rock fragments, shorten the cleaning time, improve the efficiency, reduce the labor intensity and safety hazards, and enhance the reliability of the device.

[0013] 2. By setting the collection frame and the contact plate, when the second pushing plate moves forward, the contact plate will move and drive the collection frame to automatically move out of the support base, thereby realizing convenient collection of rock fragments. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0015] Figure 2 It is the first kind of partial sectional view of the test frame component of the utility model.

[0016] Figure 3 It is the second kind of partial sectional view of the test frame component of the utility model.

[0017] Figure 4 It is the third kind of partial sectional view of the test frame component of the utility model.

[0018] Figure 5 It is a three-dimensional structure schematic view of the pushing plate, the electric sliding rail and the electric sliding block and other components of the utility model.

[0019] Figure 6 It is a three-dimensional structure schematic view of the support plate and the pushing plate component of the utility model.

[0020] Meaning of reference signs in the drawing: 1, support base, 2, test frame, 201, protective door, 3, first electric push rod, 4, fixed block, 5, second electric push rod, 6, pressing block, 7, support plate, 8, third electric push rod, 9, first pushing plate, 10, cleaning cotton bar, 11, inclined plate, 12, pushing plate, 13, electric sliding rail, 14, electric sliding block, 15, collection frame, 16, contact plate, 17, second pushing plate, 18, controller. Detailed Implementation

[0021] Example: A fixing device for testing the unloading strength of a hybrid model rock, such as... Figures 1-6 As shown, the device includes a support base 1, a test frame 2, protective doors 201, a first electric push rod 3, a fixing block 4, a second electric push rod 5, a pressure block 6, a support plate 7, and a controller 18. The test frame 2 is welded to the top of the support base 1. Two protective doors 201 are arranged side by side and slidably disposed at the front of the test frame 2. Each protective door 201 is equipped with two protruding plates distributed on the left and right sides. The inner protruding plate contacts the test frame 2 and serves as a positioning tool, while the outer protruding plate is spaced appropriately from the test frame 2 to facilitate smooth sliding of the protective door 201. These two protruding plates cooperate to form a stable sliding structure, limiting the protective door 201 to the test frame 2. The inner protruding plate is equipped with a strip handle for easy operation of the protective door 201. Each protective door 201 is equipped with a transparent plate for easy viewing of the interior of the test frame 2. The first electric push rod 3 is bolted to the upper part of the test frame 2, and its telescopic end extends downward into the interior area of ​​the test frame 2. The fixing block 4 is welded... Two second electric push rods 5 are bolted side-by-side to the telescopic end of the first electric push rod 3 and to the lower inner area of ​​the test frame 2. Two pressure blocks 6 are welded to the telescopic ends of the two second electric push rods 5 respectively, and the two pressure blocks 6 are mirror-symmetrically distributed. The pressure block 6 on the left is inverted L-shaped, and the pressure block 6 on the right is upright L-shaped, so that the two pressure blocks 6 can apply shear force to the rock evenly and effectively during the test. The fixing block 4 is placed in the middle area directly above the two pressure blocks 6. The longitudinal lengths of the three are consistent to ensure that the rock is subjected to uniform and stable force during the test. The support plate 7 is welded to the inner bottom of the test frame 2 to provide a stable support platform for the rock. The fixing block 4 is located above the support plate 7, and the two pressure blocks 6 are located on the left and right sides of the support plate 7 respectively. The controller 18 is bolted to the upper front side of the test frame 2 and electrically connected to the first electric push rod 3 and the second electric push rod 5. It also includes a limit and cleaning component, which is set in the lower inner area of ​​the test frame 2.

[0022] like Figures 3-6As shown, the limiting and cleaning assembly comprises a third electric push rod 8, a first push plate 9, a cleaning cotton bar 10, a pushing plate 12, an electric sliding rail 13, an electric sliding block 14 and a second push plate 17, the third electric push rod 8 connected with the controller 18 is bolted at the inner lower area of the test frame 2, the telescopic end of which is welded with the first push plate 9 towards the front, and the first push plate 9 is in Z-shaped structure as a whole, which just fits the dynamic space formed between the two pressing blocks 6, so as to ensure that the first push plate 9 can smoothly and accurately pass between the two pressing blocks 6 during the cleaning process, avoiding collision or jamming phenomenon, and a circle of cleaning cotton bars 10 is bonded on the edge of the first push plate 9, the top surface of the supporting plate 7 and the lowest point of the cleaning cotton bar 10 are at the same horizontal height, so that the cleaning cotton bar 10 can closely adhere to the surface of the supporting plate 7 during the movement of the first push plate 9, and the supporting plate 7 is cleaned in an overall and meticulous manner, two electric sliding rails 13 are bolted at the inner bottom end of the test frame 2, and each electric sliding block 14 is slidingly arranged on each electric sliding rail 13, and the electric sliding rail 13 and the electric sliding block 14 are both electrically connected with the controller 18, and each pushing plate 12 is bolted on each electric sliding block 14, and the bottom surface thereof is in close contact with the inner bottom surface of the test frame 2, the second push plate 17 is welded between the two pushing plates 12, the side surface of each pushing plate 12 away from the inner side wall of the test frame 2 is kept on the same longitudinal line with one side surface of the supporting plate 7, preventing the pushing plate 12 from interfering with the supporting plate 7, and a layer of wear-resistant coating with low friction coefficient is coated on the side surface of the pushing plate 12 in contact with the supporting plate 7, so as to reduce the friction resistance therebetween and make the movement of the pushing plate 12 more smooth.

[0023] As shown in Figure 1 , Figure 3 and Figure 5 , it further comprises an inclined plate 11, a collecting frame 15 and a contact plate 16, the collecting frame 15 is slidingly placed in the interior of the supporting seat 1, the front part of which is provided with two handles symmetrically distributed, the contact plate 16 is welded on the upper front side of the collecting frame 15, the second push plate 17 forms an abutting fit with the rear side of the contact plate 16, the inclined plate 11 is welded at the position of the front side of the top end of the supporting seat 1 and is in close contact with the lower part of the test frame 2, and the front side of the inclined plate 11 is designed as an inclined surface with a certain inclination angle, which is aligned with the area directly above the collecting frame 15, so that the rock fragments can smoothly slide along the inclined surface into the collecting frame 15.

[0024] When it is needed to use the device to test the rock unloading strength, the operator first places the rock to be tested on the support plate 7 stably, after placing, pushes the two protective doors 201 inward, closes the test frame 2, then starts the third electric push rod 8 through the controller 18 to control the extension end to extend, drives the first push plate 9 to move forward, at the same time, starts the two electric sliding rails 13 to control the two electric sliding blocks 14 to drive the two push material plates 12 to move backward at the same time, and the two push material plates 12 drive the second push plate 17 to move backward, when the first push plate 9 moves forward to the appropriate position and the second push plate 17 moves backward to the appropriate position, the two plates cooperate with each other to contact and limit the rock from the longitudinal direction;

[0025] Then start the first electric push rod 3 to control the extension end to extend, drive the fixed block 4 to move downward until the fixed block 4 tightly presses the rock to fix it on the support plate 7, then start the two second electric push rods 5 to control the extension end to extend, drive the two pressing blocks 6 to move inward, the two pressing blocks 6 gradually approach and contact the rock during the movement to apply shear force to the rock from the horizontal direction, after the rock is subjected to the shear force, the internal structure of the rock begins to change, when the shear force exceeds the bearing limit of the rock, the rock will be broken, the operator observes the breaking process of the rock through the protective door 201 to provide an important reference for subsequent engineering design and construction;

[0026] After the test is completed, control the extension end of the first electric push rod 3 to retract, drive the fixed block 4 to move upward to the initial position, close the first electric push rod 3, at the same time, control the extension end of the two second electric push rods 5 to retract, drive the two pressing blocks 6 to move outward, so that the two pressing blocks 6 gradually separate from and move away from the rock, and close the two second electric push rods 5;

[0027] Then pull the two protective doors 201 outward to open the test frame 2, start the third electric push rod 8 again to control the extension end to continue to extend, drive the first push plate 9 to continue to move forward, at the same time, control the two electric sliding blocks 14 to drive the two push material plates 12 to move forward, and the second push plate 17 moves forward together with the two push material plates 12, when the first push plate 9 moves forward, it pushes the rock fragments on the support plate 7, when the two push material plates 12 move forward, they push the rock fragments falling on the bottom surface of the test frame 2, and the second push plate 17 pushes the contact plate 16 to move forward, so that the collection frame 15 moves forward with the contact plate 16 to move out of the support seat 1 automatically, with the continuous movement of the first push plate 9 and the two push material plates 12, the pushed rock fragments accurately fall into the collection frame 15 along the inclined surface of the inclined plate 11 for centralized collection;

[0028] After cleaning, control the third electric push rod 8 retracting end, drive the first push plate 9 back, while controlling two electric sliding block 14 drive two push material plate 12 back, second push plate 17 with two push material plate 12 back, when the first push plate 9 and second push plate 17 return to the initial position, immediately close the third electric push rod 8 and electric sliding rail 13, finally manually push the collection frame 15 into the support seat 1.

Claims

1. A fixing device for testing the unloading strength of a hybrid model rock, characterized in that, The utility model provides a test frame, it includes support seat (1), test frame (2), protective door (201), first electric push rod (3), fixed block (4), second electric push rod (5), pressure block (6), support plate (7) and controller (18), test frame (2) is fixedly connected at the top position of support seat (1), two protective doors (201) are distributed in parallel and are slidably arranged in the front of test frame (2), each protective door (201) is equipped with two convex plates distributed left and right, wherein the convex plate on one side is in contact with test frame (2), and the convex plate on the other side is kept a proper distance from test frame (2), the two convex plates form a stable sliding structure in cooperation, and a strip-shaped handle is arranged on the convex plate on one side, the first electric push rod (3) is installed on the upper portion of test frame (2), and the telescopic end thereof extends downward to the inner region of test frame (2), the fixed block (4) is fixedly connected to the telescopic end of the first electric push rod (3), two second electric push rods (5) are installed in the inner lower region of test frame (2) and are distributed in parallel, two pressure blocks (6) are fixedly connected to the telescopic ends of the two second electric push rods (5), and the two pressure blocks (6) are symmetrically distributed, the pressure block (6) on one side is in inverted L shape, and the pressure block (6) on the other side is in normal L shape, the fixed block (4) is located in the middle region above the two pressure blocks (6), and the longitudinal lengths of the three are consistent, the support plate (7) is fixedly connected to the inner bottom end of test frame (2), the fixed block (4) is located above the support plate (7), and the two pressure blocks (6) are located on the two sides of the support plate (7), the controller (18) is installed on one side of the upper portion of test frame (2) and is electrically connected with the first electric push rod (3) and the second electric push rod (5), and further includes a limiting and cleaning assembly, and the limiting and cleaning assembly is arranged in the inner lower region of test frame (2).

2. The fixing device for testing the unloading strength of a mixed model rock according to claim 1, characterized in that, The limiting and cleaning assembly includes a third electric push rod (8), a first push plate (9), a pushing plate (12), an electric sliding rail (13), an electric sliding block (14) and a second push plate (17), the third electric push rod (8) electrically connected with the controller (18) is installed in the inner lower region of test frame (2), the telescopic end thereof is fixedly connected with the first push plate (9) forward, and the first push plate (9) is in Z-shaped structure as a whole, just fits the dynamic space formed between the two pressure blocks (6), two electric sliding rails (13) are installed at the inner bottom end of test frame (2) and are distributed left and right, each electric sliding block (14) is slidably arranged on each electric sliding rail (13), and the electric sliding rail (13) and the electric sliding block (14) are electrically connected with the controller (18), each pushing plate (12) is installed on each electric sliding block (14), and the bottom surface thereof is in close contact with the inner bottom surface of test frame (2), and the second push plate (17) is fixedly connected between the two pushing plates (12).

3. The device according to claim 2, wherein It also includes a collection frame (15) and a contact plate (16), the collection frame (15) is slidingly arranged inside the support seat (1), and the front part is provided with two handles symmetrically distributed, the contact plate (16) is fixedly connected to one side of the upper part of the collection frame (15), and the second push plate (17) is in abutting fit with one side of the contact plate (16).

4. The device according to claim 3, wherein It also includes cleaning cotton (10), a ring of cleaning cotton (10) is fixedly connected to the edge of the first push plate (9), and the top surface of the support plate (7) is at the same horizontal height with the lowest point of the cleaning cotton (10).

5. The apparatus of claim 4, wherein the apparatus further comprises a plurality of clamps for holding the specimen in place during the test. It also includes an inclined plate (11), the inclined plate (11) is fixedly connected to the top end of the support seat (1) and closely contacts the lower part of the test frame (2), and one side of the inclined plate (11) is designed as an inclined surface with a certain inclination angle, and the inclined surface is aligned with the area directly above the collection frame (15).

6. The apparatus of claim 5, wherein the apparatus further comprises a plurality of clamps for holding the specimen in place. The side surface of each push plate (12) away from the inner side wall of the test frame (2) is kept on the same longitudinal line with one side surface of the support plate (7).

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