Rock mass compressive strength testing device

Abstract

The present application relates to the technical field of geological exploration, and discloses a rock mass compressive strength testing device, which comprises a rack, a working chamber is formed in the rack, a hydraulic cylinder is installed on the top of the rack, the output end of the hydraulic cylinder is located in the working chamber, and a pressing head is installed on the output end of the hydraulic cylinder; a placing table is installed on the bottom of the rack and used for placing a sample; and an automatic placing assembly is installed on the placing table and used for automatically moving the sample to the center of the top surface of the placing table. The present application can automatically adjust the position of the sample, quickly place the sample on the detection position on the placing table, and is safe and reliable to use, and the present application can conveniently clean the surface of the placing table, avoid the surface of the placing table from being covered with rock particles, and is more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a device for testing the compressive strength of rock masses. Background Technology

[0002] A rock mass refers to a geological body within a specific engineering area, composed of various types of rocks containing weak structural planes, characterized by discontinuity, heterogeneity, and anisotropy. Rock masses are formed over a long geological history, possessing a certain structure and texture, and are related to engineering construction.

[0003] Currently, the basic testing methods for rock compressive strength include the saturated uniaxial test method and the point load test method. Among them, the saturated uniaxial test method involves saturating a cylindrical rock specimen with water, applying axial pressure to it under specified test conditions until the specimen reaches its limit and fails, thereby determining the strength per unit bearing area of ​​the rock specimen.

[0004] Existing rock mass compressive strength testing devices are not convenient for automatically adjusting the sample position, making them unsafe to use. In addition, the residual rock particles and other impurities inside the testing device are difficult to clean, causing inconvenience to use. Summary of the Invention

[0005] To address the technical problems mentioned in the background section, this invention provides a rock mass compressive strength testing device.

[0006] This invention is achieved using the following technical solution: a rock mass compressive strength testing device, comprising...

[0007] The rack contains a working chamber.

[0008] The hydraulic cylinder is mounted on the top of the frame, with its output end located in the working chamber. The output end of the hydraulic cylinder is equipped with an extrusion head.

[0009] A placement platform is installed at the bottom of the frame and is used to place samples.

[0010] An automatic placement assembly is installed on the placement stage and is used to automatically move the sample to the center of the top surface of the placement stage.

[0011] As a further improvement to the above solution, the placement stage is cylindrical, and the automatic placement assembly includes at least four mounting brackets. These brackets are evenly distributed along the circumference of the placement stage and have an L-shaped structure. A portion of each bracket is vertical, and a horizontally telescopic component is mounted on this vertical section. The output end of the telescopic component is connected to a mounting plate. A clamping rod is fixed to one side of the mounting plate, and the other end of the clamping rod is connected to a rotating rod that maintains verticality. The side of the rotating rod contacts the side of the sample to push the sample across the top surface of the placement stage. This facilitates the rapid and accurate movement of the sample to the center of the placement stage, making strength testing easier.

[0012] As a further improvement to the above scheme, two clamping rods are arranged in parallel, and a rotating rod is movably arranged between the two clamping rods.

[0013] The rotating rod has guide grooves along its length on both opposite sides, with a slider slidably connected to each guide groove. A return spring connected to the slider is installed inside each guide groove. The two sliders are rotatably connected to two clamping rods via pins, and a drive motor is mounted on the outside of one of the clamping rods to drive one of the pins. This design makes the structure more stable and ensures that the rotating rod operates without interference. When cleaning the surface of the placement platform, simply rotate the rotating rod to a horizontal position, at which point the side of the rotating rod can contact the top surface of the placement platform. This allows the surface of the placement platform to be cleaned as the rotating rod moves circumferentially around the platform.

[0014] As a further improvement to the above solution, a through hole is provided on the vertical section of the mounting bracket, through which the clamping rod can slide.

[0015] The above structure makes the clamp rod run more stably and work more reliably.

[0016] As a further improvement to the above solution, an annular groove is provided on the side of the placement platform, and an annular sleeve is rotatably mounted at the bottom of the groove. A lifting mechanism corresponding to the mounting frame is connected to the annular sleeve, and the power output end of the lifting mechanism is connected to the bottom of the corresponding mounting frame. With this structure, the annular sleeve is driven to rotate circumferentially by a servo motor installed in the placement platform, allowing the mounting frame to move around the platform. This facilitates subsequent cleaning of the top surface of the placement platform using a rotating rod, resulting in automated work and high efficiency.

[0017] As a further improvement to the above solution, a positioning mechanism is also provided between the rotating rod and the clamping rod. The positioning mechanism is used to fix the rotating rod in the horizontal or vertical direction.

[0018] The above structure enables the rotating rod to remain stable during operation, thereby ensuring its smooth operation.

[0019] As a further improvement to the above solution, the positioning mechanism includes a groove on the side of the rotating rod, an electromagnet installed in the groove, and a positioning pin slidably connected to the groove. The positioning pin can be magnetically attracted or repelled by the electromagnet, and the side of the clamping rod is provided with several positioning slots, which can cooperate with the positioning pin to fix the position of the rotating plate.

[0020] With the above structure, an electromagnet can be used to drive the positioning pin and positioning groove to separate or engage, thereby achieving the purpose of adjusting the position of the rotating rod.

[0021] As a further improvement to the above solution, the lifting mechanism includes a motor and a lead screw. The motor is mounted on a ring sleeve, the lead screw is vertically arranged, and the bottom end of the lead screw is connected to the output shaft of the motor. The lead screw and the bottom of the mounting bracket are screwed together.

[0022] The above structure allows for easy adjustment of the height of the rotating rod, thus facilitating its use.

[0023] As a further improvement to the above solution, a scraping layer is provided on the side of the rotating plate that contacts the top surface of the placement platform, so as to make the cleaning of the top surface of the placement platform more thorough. The scraping layer can improve the cleaning effect and make the cleaning more complete and thorough.

[0024] As a further improvement to the above solution, the telescopic component can be an electric push rod, a pneumatic cylinder, or a hydraulic cylinder.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] The rock mass compressive strength testing device proposed in this invention includes a frame, a hydraulic cylinder, a placement platform, and an automatic placement component. The frame has a working chamber. The hydraulic cylinder is installed on the top of the frame, and its output end is located in the working chamber. An extrusion head is installed on the output end of the hydraulic cylinder. The placement platform is installed at the bottom of the frame and is used to place the sample. The automatic placement component is installed on the placement platform and is used to automatically move the sample to the center of the top surface of the placement platform.

[0027] This invention can automatically adjust the sample position and quickly place the sample in the detection position on the placement stage. It is safe and reliable to use. In addition, this solution can facilitate the cleaning of the surface of the placement stage to avoid residual rock particles on the surface, making it more convenient for testing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the compressive strength testing device proposed in this invention;

[0029] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 This is a schematic diagram of the connection structure between the mounting bracket and the clamping rod in this invention;

[0031] Figure 4 This is a schematic diagram of the rotating rod proposed in this invention;

[0032] Figure 5 This is a top view of the placement platform proposed in this invention.

[0033] Figure 6 This is a schematic diagram of the rotating rod proposed in this invention.

[0034] Explanation of key symbols:

[0035] In the diagram: 1. Frame; 2. Hydraulic cylinder; 3. Extrusion head; 4. Working chamber; 5. Placement table; 5. Annular groove; 6. Mounting bracket; 6. Perforation; 7. Lifting mechanism; 8. Annular sleeve; 9. Telescopic component; 10. Mounting plate; 11. Clamping rod; 12. Slider; 13. Rotating rod; 14. Electromagnet; 15. Positioning groove; 16. Positioning pin; 17. Groove; 18. Drive motor; 19. Guide slide; 1301. Scraping layer; 1302. Clamping groove. Detailed Implementation

[0036] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] Example 1:

[0038] Please combine Figure 1-6 The rock mass compressive strength testing device proposed in this scheme includes:

[0039] The device consists of a frame 1, with a working chamber 4 inside. During use, the sample strength test is completed inside the working chamber 4. A protective net can also be installed outside the working chamber to prevent the sample from breaking and spilling, thus ensuring safer use.

[0040] Hydraulic cylinder 2 is installed on the top of frame 1, and the output end of hydraulic cylinder 2 is located in the working chamber 4. The output end of hydraulic cylinder 2 is equipped with extrusion head 3.

[0041] Placement platform 5 is installed at the bottom of frame 1 and is used to place the sample. The sample is generally pre-cut and trimmed into a cylindrical shape to facilitate placement at the detection position in the middle of placement platform 5 for detection.

[0042] The device also includes an automatic placement component, which is mounted on the placement stage 5 and is used to automatically move the sample to the center of the top surface of the placement stage 5.

[0043] As an optional embodiment of the present invention, the placement platform 5 is cylindrical, the automatic placement component includes at least four mounting brackets 6, and the mounting brackets 6 are evenly distributed along the circumference of the placement platform 5. The mounting brackets 6 are L-shaped structures, and a part of the mounting brackets 6 is a vertical section. A horizontally telescopic telescopic member 9 is installed on the vertical section. The telescopic member 9 is an electric push rod, a cylinder or a hydraulic cylinder.

[0044] It is worth mentioning that the output end of the telescopic component 9 is connected to a mounting plate 10. A clamping rod 11 is fixed to one side of the mounting plate 10, and the other end of the clamping rod 11 is connected to a rotating rod 13 that can maintain verticality. The side of the rotating rod 13 is used to contact the side of the sample to push the sample to move on the top surface of the placement stage 5. This facilitates the rapid and accurate movement of the sample to the center position of the placement stage 5, making it convenient for strength testing. It can quickly and accurately locate the testing position without manual operation, avoiding accidental activation of the equipment and potential injury to personnel during manual sample movement. Therefore, this device is safer and more reliable to use.

[0045] In an optional embodiment of the present invention, two clamping rods 11 are arranged in parallel, and a rotating rod 13 is movably disposed between the two clamping rods 11.

[0046] Guide grooves 19 are provided on both opposite sides of the rotating rod 13 along its length. A slider 12 is slidably connected to each guide groove 19. A return spring connected to the slider 12 is also installed in the guide groove 19. The two sliders 12 are rotatably connected to the two clamping rods 11 by pins. A drive motor 18 is installed on the outside of one of the clamping rods 11, which drives one of the pins to rotate. This makes the structure more stable and ensures that the rotating rod 13 will not interfere with the rotation and can operate normally. At the same time, when it is necessary to clean the surface of the placement platform 5, the rotating rod 13 can be rotated to a horizontal position. At this time, the side of the rotating rod 13 can contact the top surface of the placement platform 5. Thus, the surface of the placement platform 5 can be cleaned when the rotating rod 13 moves around the placement platform 5 in a circumferential motion.

[0047] As an optional embodiment of the present invention, a through hole 601 is provided on the vertical section of the mounting bracket 6, and the clamping rod 11 can slide through the through hole 601.

[0048] The above structure makes the operation of the clamping rod 11 more stable and reliable.

[0049] As an optional embodiment of the present invention, please refer to the following: Figure 1The placement platform 5 has an annular groove 501 on its side, and an annular sleeve 8 is rotatably mounted on the bottom of the annular groove 501. The annular sleeve 8 can rotate around the central axis of the placement platform 5 within the annular groove 501. A lifting mechanism 7 corresponding to the mounting frame 6 is also connected to the annular sleeve 8, and the power output end of the lifting mechanism 7 is connected to the bottom of the corresponding mounting frame 6. Through the above structure, the servo motor installed in the placement platform 5 drives the annular sleeve 8 to rotate circumferentially, which enables the mounting frame 6 to move circumferentially around the placement platform 5. This facilitates subsequent cleaning of the top surface of the placement platform using a rotating rod, achieving automated work and high work efficiency.

[0050] As an optional embodiment of the present invention, a positioning mechanism is further provided between the rotating rod 13 and the clamping rod 11, the positioning mechanism being used to fix the rotating rod 13 in the horizontal or vertical direction.

[0051] The above structure enables the rotating rod 13 to remain stable during operation, thereby ensuring its smooth operation.

[0052] As an optional embodiment of the present invention, the positioning mechanism includes a groove 17 formed on the side of the rotating rod 13, an electromagnet 14 installed in the groove 17, and a positioning pin 16 slidably connected to the groove 17. The positioning pin 16 can be magnetically attracted or repelled by the electromagnet 14, and a plurality of positioning grooves 15 are formed on the side of the clamping rod 11. The positioning grooves 15 can cooperate with the positioning pin 16 to fix the position of the rotating plate 13.

[0053] As an optional embodiment of the present invention, the positioning pin 16 and the positioning groove 15 can be driven to separate or engage by the electromagnet 14 to achieve the purpose of adjusting the position of the rotating rod 13.

[0054] As an optional embodiment of the present invention, the lifting mechanism includes a motor (not shown) and a lead screw (not shown), wherein the motor is mounted on the annular sleeve 8, the lead screw is arranged vertically, and the bottom end of the lead screw is connected to the output shaft of the motor, and the lead screw and the bottom of the mounting bracket 6 are screwed together.

[0055] The above structure allows for easy adjustment of the height of the rotating rod 13, thus facilitating its use.

[0056] Reference Figure 5 The rotating plate 13 has a scraper layer 1301 on the side that contacts the top surface of the placement platform 5, so as to make the cleaning of the top surface of the placement platform 5 more thorough. The scraper layer 1301 can improve the cleaning effect and make the cleaning more complete and thorough.

[0057] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A rock mass compressive strength testing device, characterized in that, include A rack, wherein a working chamber is provided within the rack; A hydraulic cylinder is mounted on the top of the frame, with its output end located in the working chamber, and an extrusion head is mounted on the output end of the hydraulic cylinder. A placement table, which is mounted at the bottom of the frame and is used to place samples; An automatic placement assembly, mounted on a placement stage, is used to automatically move the sample to the center of the top surface of the placement stage; The placement stage is cylindrical, and the automatic placement assembly includes at least four mounting frames. The mounting frames are evenly distributed around the circumference of the placement stage, and each mounting frame has an L-shaped structure. A portion of the mounting frame is a vertical section, on which a horizontally telescopic telescopic component is installed. The output end of the telescopic component is connected to a mounting plate. A clamping rod is fixed to one side of the mounting plate, and the other end of the clamping rod is connected to a rotating rod that can maintain verticality. The side of the rotating rod is used to contact the side of the sample to push the sample to move on the top surface of the placement stage. The clamping rods are arranged in parallel, and the rotating rod is movably disposed between the two clamping rods; The rotating rod has guide grooves on both sides along its length. A slider is slidably connected to each guide groove. A return spring connected to the slider is installed in the guide groove. The two sliders are rotatably connected to the two clamping rods by pins. A drive motor is installed on the outside of one of the clamping rods. The drive motor is used to drive one of the pins to rotate. The vertical section of the mounting bracket has a through hole, and the clamping rod can slide through the through hole; A positioning mechanism is also provided between the rotating rod and the clamping rod, which is used to fix the rotating rod in a horizontal or vertical direction. The positioning mechanism includes a groove on the side of the rotating rod, an electromagnet installed in the groove, and a positioning pin slidably connected to the groove. The positioning pin can be magnetically attracted or repelled by the electromagnet. The side of the clamping rod is provided with several positioning slots, which can cooperate with the positioning pin to fix the position of the rotating plate.

2. The rock mass compressive strength testing device as described in claim 1, characterized in that, The side of the placement platform is provided with an annular groove, and an annular sleeve is rotatably installed at the bottom of the annular groove. The annular sleeve is also connected to a lifting mechanism corresponding to the mounting frame, and the power output end of the lifting mechanism is connected to the bottom of the corresponding mounting frame.

3. The rock mass compressive strength testing device as described in claim 2, characterized in that, The lifting mechanism includes a motor and a lead screw. The motor is mounted on the annular sleeve, the lead screw is vertically arranged, and the bottom end of the lead screw is connected to the output shaft of the motor. The lead screw and the bottom of the mounting bracket are screwed together.

4. The rock mass compressive strength testing device as described in claim 1, characterized in that, The rotating plate has a scraping layer on the side that can contact the top surface of the placement platform, so as to make the top surface of the placement platform more thoroughly cleaned.

5. The rock mass compressive strength testing device as described in claim 1, characterized in that, The telescopic component is an electric push rod, a pneumatic cylinder, or a hydraulic cylinder.

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