A testing device and testing method for testing rock mechanical properties

Abstract

The application discloses a testing device and a testing method for testing rock mechanical properties, and relates to the field of rock mechanical testing devices, which comprises an upper support and a lower support, guide columns are connected to the four corners of the upper support and the lower support, a pressure plate is movably installed on the four guide columns, and a placing seat for placing rocks is installed on the lower support. In the application, when the test is completed, the detection push plate is in contact with the placing seat, the surface deformation of the placing seat will squeeze any one or more detection push plates, and the emergency stop switch is triggered, so that the driving motor is stopped, the inaccuracy of the test result caused by the deformation of the placing seat is avoided, the waste of the sample is avoided, the pressure plate is reset, the rock debris adhered to the bottom side of the pressure plate is scraped off by the reciprocating slide rod through the slag scraping strip, and falls into the storage groove, so that the purpose of automatically cleaning the pressure plate is achieved, and the accuracy of the test result is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of rock mechanics testing devices, and in particular to a testing device and a testing method for testing rock mechanics properties. Background Art

[0002] Shale gas reservoirs are typical "self-generating and self-storing" natural gas reservoirs. Gas-bearing shales have the functions of source rock, reservoir, and even cap rock. Shale gas accumulation does not need to be in the high part of the structure, and is a continuous enriched gas reservoir. The distribution of shale gas reservoirs is comparable to the distribution range of effective source rocks and is regionally distributed. Therefore, as long as large areas of thick shale with high carbon content are found, the distribution of shale gas can be roughly determined. It should be noted that the porosity and permeability of shale gas reservoirs are extremely low. The thickness of the pay layer is generally greater than 15m, the porosity is generally 4% to 6%, and the matrix permeability is between (0.001 to 1)×10 -3 μm 2 There are often natural fractures between them, which usually require special drilling technology, completion technology and fracturing transformation technology to achieve commercial production;

[0003] However, during the exploration of shale gas, it is necessary to test the mechanical properties of the mined rocks in order to understand the innate conditions for shale gas development. During the test, the rock sample is placed on the placement table, and the drive motor is started to drive the threaded extrusion rod downward, and the threaded extrusion rod drives the pressure plate downward to crush the rock. However, in the actual test process, due to the increase in the number of tests and the influence of the characteristics of different rocks on the placement table, the flatness of the placement table is prone to change, and the change in flatness is not easy to be detected, which in turn affects the subsequent test structure of the mechanical properties of the rock; in addition, since the pressure plate crushes the rock, the rock is very easy to stick to the pressure plate. During the test, if it is not cleaned in time, it will also affect the accuracy of the test results. The laboratory test itself has the problem of poor accuracy. Therefore, once the result is affected, the error of the test structure will be further increased. Summary of the Invention

[0004] The purpose of the present invention is to provide a testing device and a testing method for testing the mechanical properties of rocks, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A testing device for testing the mechanical properties of rocks, comprising an upper support and a lower support, wherein the four corners of the upper support and the lower support are connected to guide columns, pressure plates are movably mounted on the four guide columns, a placement seat for placing rocks is mounted on the lower support, a threaded extrusion rod is movably mounted on the upper support, the pressure plate is mounted on the bottom end of the threaded extrusion rod, and a drive motor for driving the threaded extrusion rod is mounted on the upper support;

[0007] It also includes an active leveling detection structure, which is installed on the lower support and is used to detect the flatness of the surrounding area of ​​the placement seat; the active leveling detection structure includes four synchronously movable brackets, which are movably installed on the four sides of the lower support, and an adapter is installed on the synchronously movable bracket. A detection push plate is movably installed on the bottom side of the adapter, and an emergency stop switch is installed on the inner wall of the adapter. The movement of the detection push plate is used to trigger the emergency stop switch.

[0008] The pressure plate further comprises a reset automatic cleaning structure, the reset automatic cleaning structure being mounted on the pressure plate and being used to actively clean the bottom side of the pressure plate; the reset automatic cleaning structure comprises a reciprocating slide bar, the reciprocating slide bar being slidably mounted on the bottom side of the pressure plate, a scraping bar being mounted on the top side of the reciprocating slide bar, and the reciprocating slide bar moving through the scraping bar to scrape off rock debris on the bottom side of the pressure plate;

[0009] It also includes an auxiliary lubrication structure, which is installed on the top side of the upper support, and is used to actively lubricate the threaded extrusion rod; the auxiliary lubrication structure includes a protection box, which is installed on the top side of the upper support, and a plurality of oil nozzles are installed on the inner wall of the protection box, and both sides of the protection box are hollow and have lubricating oil bags placed thereon, and the lubricating oil bags are connected to the plurality of oil nozzles, and the lubricating oil in the lubricating oil bags is sprayed onto the threaded extrusion rod through the plurality of oil nozzles.

[0010] Furthermore, in a preferred embodiment of the present invention, the active leveling detection structure further comprises four downward-pressing transverse pushing plates, and the four downward-pressing transverse pushing plates are respectively mounted on the four synchronously movable brackets;

[0011] Two lower pressure frames are movably mounted on the lower support, and extrusion rings are mounted on the two lower pressure frames. Two downward pressure rods are mounted on the bottom side of the pressure plate, and the pressure plate moves by squeezing the two lower pressure frames through the two downward pressure rods.

[0012] Furthermore, in a preferred embodiment of the present invention, two lower pressing grooves are provided on the top side of the lower support, and the two lower pressing frames are movably installed in the two lower pressing grooves respectively. A rebound spring is installed on the bottom side of the lower pressing frame, and the bottom end of the rebound spring is installed on the bottom inner wall of the lower pressing groove;

[0013] Horizontal pull grooves are provided around the lower support, and horizontal pull rods are installed on the four synchronous movable brackets. The four horizontal pull rods are respectively slidably installed in the four horizontal pull grooves. Horizontal pull springs are installed on the inner walls of the horizontal pull grooves, and the other ends of the horizontal pull springs are installed on the horizontal pull rods.

[0014] Furthermore, in a preferred embodiment of the present invention, two buffer springs are installed on one side of the detection push plate, and the other end of the buffer spring is installed on the inner wall of the adapter.

[0015] Furthermore, in a preferred embodiment of the present invention, the reset automatic cleaning structure further comprises a rotating push-pull rod, wherein the rotating push-pull rod is rotatably mounted on the bottom side of the pressure plate;

[0016] A driving groove is provided on the bottom side of the reciprocating slide rod, and a driving shaft is rotatably mounted on the rotating push-pull rod, and the driving shaft is movably mounted in the driving groove.

[0017] Furthermore, in a preferred embodiment of the present invention, a synchronous rotating rod is rotatably mounted on the pressure plate, the bottom end of the synchronous rotating rod is mounted on the rotating push-pull rod, a driving gear is mounted on the top end of the synchronous rotating rod, a driving gear plate is slidably mounted on the top side of the pressure plate, and the driving gear plate is meshed with the driving gear;

[0018] A driving rod is movably mounted on the pressure plate, a linkage rod is rotatably mounted between the driving rod and the driving gear plate, two linkage shafts are rotatably mounted on the linkage rod, and the two linkage shafts are respectively mounted on the driving gear plate and the driving rod;

[0019] A return spring is mounted on the driving rod, and a bottom end of the return spring is mounted on the top side of the pressure plate.

[0020] Furthermore, in a preferred embodiment of the present invention, two receiving grooves are provided on the reciprocating slide bar, and the receiving grooves are used to collect rock debris;

[0021] Two limiting slide plates are installed on the reciprocating slide bar, and two sliding grooves are provided on the bottom side of the pressure plate. The two limiting slide plates are respectively slidably installed in the two sliding grooves.

[0022] Furthermore, in a preferred embodiment of the present invention, the auxiliary lubrication structure further comprises two oil pushing plates, both of which are movably mounted in the protection box, and the oil pushing plates are moved to squeeze the lubricating oil bag;

[0023] Two oil pushing rods are installed on the oil pushing plate, and the two oil pushing rods are movably installed on the protection box. The two oil pushing rods are connected to a push-pull plate, and an arc seat is installed on one side of the push-pull plate;

[0024] Push brackets are installed on both sides of the pressure plate. The movement of the pressure plate drives the two push brackets to squeeze the two arc-shaped seats, which is used to drive the two push-pull plates to move.

[0025] Furthermore, in a preferred embodiment of the present invention, a return spring is sleeved on the oil pushing rod, one end of the return spring is mounted on the protection box, and the other end of the return spring is mounted on the push-pull plate;

[0026] A sheath is installed on one side of the push-pull plate, the other side of the sheath is installed on the protection box, and the return spring is located in the sheath.

[0027] A testing method for testing rock mechanical properties, which is performed according to the above-mentioned testing device for testing rock mechanical properties, comprises the following steps:

[0028] S1. The driving motor starts, and drives the pressure plate to reset through the threaded extrusion rod, so that the pressure plate no longer squeezes the two downward pressure rods, and the lower pressure frame drives the extrusion ring to reset, and under the pulling force of multiple horizontal tension springs, pulls multiple synchronous moving brackets to reset;

[0029] S2. The synchronous moving bracket is reset, and the detection push plate is driven to contact the placement seat through the adapter seat. When the surface of the placement seat is deformed, one or more detection push plates are squeezed to retract, and the buffer spring is driven to bear force, and the emergency stop switch is triggered at the same time, causing the drive motor to stop suddenly;

[0030] S3. When the pressure plate is reset, the driving rod is squeezed and moves on the pressure plate. The driving rod moves through the linkage rod to drive the driving gear plate to move, so that the driving gear plate drives the gear to rotate, and the gear drives the rotating push-pull rod to rotate through the synchronous rotating rod, so that the rotating push-pull rod drives the reciprocating slide rod to move through the driving shaft, and then the reciprocating slide rod scrapes off the rock debris adhered to the bottom side of the pressure plate through the scraping bar;

[0031] S4. The pressure plate is reset, driving the two push brackets to squeeze the two arc seats to move, so that the arc seats drive the push-pull plate to move, and the push-pull plate drives the oil push plate to move through the two oil push rods, and then the oil push plate squeezes the lubricating oil bag, and then the lubricating oil in the lubricating oil bag is squeezed out through the oil outlet nozzle and sprayed on the threaded extrusion rod.

[0032] The beneficial effects of the testing device and testing method for testing rock mechanical properties proposed in the present invention are:

[0033] In the present invention, by setting up an active leveling detection structure, when the test is completed, the pressure plate moves up, so that the lower pressure rod is separated from the lower pressure frame. During the resetting process of the synchronous moving bracket, the detection push plate is driven to contact the placement seat through the adapter seat. If the surface of the placement seat is deformed, it will squeeze any one or more detection push plates to retract, and drive the buffer spring to be stressed, and at the same time trigger the emergency stop switch, so that the drive motor stops suddenly, avoiding inaccurate test results due to the deformation of the placement seat, and avoiding waste of samples.

[0034] Furthermore, in the present invention, by setting up a reset automatic cleaning structure, when the test is completed and the pressure plate is reset, the driving rod is squeezed, thereby driving the reciprocating slide rod to move, and at the same time the reciprocating slide rod slides horizontally in the two sliding grooves through the two limiting slides, so that the reciprocating slide rod scrapes off the rock debris adhered to the bottom side of the pressure plate through the scraping bar, and falls into the receiving groove, thereby achieving the purpose of automatically cleaning the pressure plate.

[0035] Furthermore, in the present invention, through the setting of the auxiliary lubrication structure, when the pressure plate is reset, the two pushing brackets are driven to squeeze the two arc-shaped seats to move, so that the arc-shaped seats drive the push-pull plate to move, and the push-pull plate drives the push-pull plate to move through the two oil push rods, and at the same time drives the return spring to be stressed, so that the push-pull plate squeezes the lubricating oil bag, and then the lubricating oil in the lubricating oil bag is squeezed out through the oil outlet nozzle and sprayed on the threaded extrusion rod, completing the automatic spraying of the lubricating oil, and when the pressure plate continues to move upward, the pushing bracket is separated from the arc-shaped seat, and under the rebound force of the return spring, the push-pull plate drives the push-pull plate to reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a testing device for testing rock mechanical properties provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of a test device for testing rock mechanical properties provided by an embodiment of the present invention, wherein an adapter and a test push plate and other structures are connected;

[0038] Figure 3 A schematic diagram of a partial cross-section of the connection between an adapter and a detection push plate tube and other structures of a test device for testing rock mechanical properties provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of a partial cross-sectional structure of a connection between a support and a synchronous movable bracket and other structures of a test device for testing rock mechanical properties provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of a partial cross-section of the connection between a lower support and a lower pressure frame and other structures of a test device for testing rock mechanical properties provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the structure of a test device for testing rock mechanical properties provided by an embodiment of the present invention, wherein a reciprocating slide rod and a scraping bar and other structures are connected;

[0042] Figure 7 A schematic diagram of a partial structure of a test device for testing rock mechanical properties provided by an embodiment of the present invention, wherein a synchronous rotating rod and a rotating push-pull rod and other structures are connected;

[0043] Figure 8 A schematic diagram of the structure of a test device for testing rock mechanical properties provided by an embodiment of the present invention, wherein a downward pressure rod is connected to a protection box and other structures;

[0044] Figure 9 A testing device for testing rock mechanical properties provided by an embodiment of the present invention Figure 8 Schematic diagram of the structure of part A;

[0045] Figure 10 A partial cross-sectional structural diagram of the connection between an oil push rod and a push-pull plate and other structures of a test device for testing rock mechanical properties provided by an embodiment of the present invention.

[0046] In the figure: 1-upper support; 2-lower support; 3-pressure plate; 4-placement seat; 5-threaded extrusion rod; 6-active leveling detection structure; 601-synchronous moving bracket; 602-adapter seat; 603-detection push plate; 604-emergency stop switch; 605-buffer spring; 606-horizontal pull groove; 607-horizontal pull rod; 608-horizontal pull spring; 609-downward pressure push plate; 610-extrusion ring; 611-downward pressure frame; 612-downward pressure groove; 613-return spring; 614-downward pressure rod; 7-reset automatic cleaning structure; 701-reciprocating slide; 702-scraping strip; 703-storage slot; 7 04-limiting slide; 705-sliding groove; 706-synchronous rotating rod; 707-rotating push-pull rod; 708-driving groove; 709-driving shaft; 710-driving gear; 711-driving gear plate; 712-driving rod; 713-linking rod; 714-linking shaft; 715-return spring; 8-auxiliary lubrication structure; 801-protection box; 802-lubricating oil bag; 803-oil outlet nozzle; 804-oil push plate; 805-oil push rod; 806-push-pull plate; 807-return spring; 808-sheath; 809-arc seat; 810-pushing bracket; 9-guide column; 10-driving motor. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0050] In addition, in the description of the present invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are used solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Furthermore, the terms "horizontal," "vertical," and "perpendicular" do not necessarily imply that a component must be absolutely vertical, but rather that it can be slightly tilted. For example, "vertical" simply means that its direction is more vertical than "horizontal," and does not mean that the structure must be completely vertical, but rather that it can be slightly tilted.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] Please refer to the attached manual Figure 1 -Attached Figure 10 A testing device for testing the mechanical properties of rocks provided by an embodiment of the present invention includes an upper support 1 and a lower support 2. The four corners of the upper support 1 and the lower support 2 are connected with guide columns 9. Pressure plates 3 are movably mounted on the four guide columns 9. A placement seat 4 for placing rocks is mounted on the lower support 2. A threaded extrusion rod 5 is movably mounted on the upper support 1. The pressure plate 3 is mounted on the bottom end of the threaded extrusion rod 5. A driving motor 10 for driving the threaded extrusion rod 5 is mounted on the upper support 1.

[0054] For further information, please refer to the attached manual. Figure 2 -Attached Figure 5 A testing device for testing the mechanical properties of rocks provided by an embodiment of the present invention also includes an active leveling detection structure 6, which is installed on the lower support 2 and is used to detect the flatness of the surrounding area of ​​the placement seat 4; the active leveling detection structure 6 includes four synchronously movable brackets 601, and the four synchronously movable brackets 601 are movably installed on the surrounding areas of the lower support 2, and an adapter seat 602 is installed on the synchronously movable bracket 601, and a detection push plate 603 is movably installed on the bottom side of the adapter seat 602, and an emergency stop switch 604 is installed on the inner wall of the adapter seat 602, and the movement of the detection push plate 603 is used to trigger the emergency stop switch 604. It should be noted that, in the embodiment of the present invention, when the test is completed and the pressure plate 3 is reset and moved upward, the four synchronously movable brackets 601 are reset synchronously, and the detection push plate 603 is driven to contact the placement seat 4 through the adapter seat 602. If the surface of the placement seat 4 is deformed, any one or more detection push plates 603 will be squeezed to retract, and the buffer spring 605 will be driven to bear force, and the emergency stop switch 604 will be triggered at the same time, causing the drive motor 10 to stop suddenly, thereby achieving the purpose of automatically detecting the upper surface of the placement seat 4.

[0055] More specifically, in the embodiment of the present invention, a reset automatic cleaning structure 7 is further included. The reset automatic cleaning structure 7 is mounted on the pressure plate 3 and is used to actively clean the bottom side of the pressure plate 3. The reset automatic cleaning structure 7 includes a reciprocating slide 701. The reciprocating slide 701 is slidably mounted on the bottom side of the pressure plate 3. A scraping bar 702 is mounted on the top side of the reciprocating slide 701. The reciprocating slide 701 moves to scrape off rock debris on the bottom side of the pressure plate 3 through the scraping bar 702. It should be noted that in the embodiment of the present invention, after the test is completed and the pressure plate 3 is reset, the reciprocating slide 701 moves back and forth, causing the scraping bar 702 to scrape off rock debris adhered to the bottom side of the pressure plate 3 and drop it into the receiving groove 703, thereby automatically cleaning the pressure plate 3.

[0056] More specifically, in the embodiment of the present invention, an auxiliary lubrication structure 8 is further included. The auxiliary lubrication structure 8 is mounted on the top side of the upper support 1. The auxiliary lubrication structure 8 is used to actively lubricate the threaded extrusion rod 5. The auxiliary lubrication structure 8 includes a protective box 801. The protective box 801 is mounted on the top side of the upper support 1. A plurality of oil nozzles 803 are mounted on the inner wall of the protective box 801. Both sides of the protective box 801 are hollow and contain lubricating oil bags 802. The lubricating oil bags 802 are connected to the plurality of oil nozzles 803. The lubricating oil in the lubricating oil bags 802 is sprayed onto the threaded extrusion rod 5 through the plurality of oil nozzles 803. It should be noted that in the embodiment of the present invention, when the pressure plate 3 is reset, the lubricating oil in the lubricating oil bag 802 is squeezed out through the oil nozzles 803 and sprayed onto the threaded extrusion rod 5, completing the automatic spraying of the lubricating oil and achieving the purpose of actively lubricating the threaded extrusion rod 5.

[0057] Please continue to refer to the instructions attached Figure 2 -Attached Figure 5 Furthermore, in an embodiment of the present invention, a testing device for testing rock mechanical properties is provided, wherein the active leveling detection structure 6 further includes four downward-pressing transverse thrust plates 609 , which are respectively mounted on four synchronously movable brackets 601 ;

[0058] In addition, two lower pressure frames 611 are movably mounted on the lower support 2, and an extrusion ring 610 is mounted on the two lower pressure frames 611. Two downward pressure rods 614 are mounted on the bottom side of the pressure plate 3. The pressure plate 3 moves by squeezing the two lower pressure frames 611 through the two downward pressure rods 614. It should be noted that in the embodiment of the present invention, when the pressure plate 3 moves downward, the pressure plate 3 squeezes the two lower pressure frames 611 through the two downward pressure rods 614. The lower pressure frames 611 move through the extrusion ring 610 to drive the four downward pressure transverse push plates 609 to move, thereby driving the four synchronously movable brackets 601 to move. The synchronously movable brackets 601 move in the transverse pull groove 606 through the transverse pull rod 607, and drive the transverse pull spring 608 to be stressed, so as to achieve the purpose of the synchronously movable bracket 601 driving the detection push plate 603 to separate from the placement seat 4 through the adapter seat 602, thereby ensuring the normal progress of the test work.

[0059] More specifically, in the embodiment of the present invention, two pressing grooves 612 are formed on the top side of the lower support 2, and two pressing frames 611 are movably installed in the two pressing grooves 612 respectively. A rebound spring 613 is installed on the bottom side of the lower pressing frame 611, and the bottom end of the rebound spring 613 is installed on the bottom inner wall of the pressing groove 612;

[0060] In addition, transverse grooves 606 are provided around the lower support 2, and transverse tie rods 607 are installed on the four synchronous movable brackets 601. The four transverse tie rods 607 are respectively slidably installed in the four transverse grooves 606. Transverse springs 608 are installed on the inner walls of the transverse grooves 606, and the other ends of the transverse springs 608 are installed on the transverse tie rods 607. It should be noted that in the embodiment of the present invention, when the lower pressure frame 611 is squeezed, it moves in the lower pressure groove 612 and causes the rebound spring 613 to be stressed. When the synchronous movable bracket 601 moves, it moves in the transverse groove 606 through the transverse tie rods 607 and drives the transverse tie springs 608 to be stressed. Therefore, under the reaction force of the rebound spring 613 and the transverse pull spring 608, the lower pressure frame 611 and the transverse tie rods 607 can be helped to reset.

[0061] Please continue to refer to the instructions attached Figure 2 -Attached Figure 5 More specifically, in the embodiment of the present invention, two buffer springs 605 are installed on one side of the detection push plate 603, and the other ends of the buffer springs 605 are installed on the inner wall of the adapter 602. It should be noted that in the embodiment of the present invention, the provision of the buffer springs 605 can help the detection push plate 603 to reset.

[0062] For further information, please refer to the attached manual. Figure 6 -Attached Figure 7 In an embodiment of the present invention, a testing device for testing the mechanical properties of rock is provided. The reset automatic cleaning structure 7 further includes a rotating push-pull rod 707, which is rotatably mounted on the bottom side of the pressure plate 3. Furthermore, a driving groove 708 is defined on the bottom side of the reciprocating slide 701. A driving shaft 709 is rotatably mounted on the rotating push-pull rod 707, and the driving shaft 709 is movably mounted within the driving groove 708. It should be noted that in this embodiment of the present invention, as the rotating push-pull rod 707 drives the reciprocating slide 701 to move via the driving shaft 709, the driving shaft 709 simultaneously slides within the driving groove 708, thereby achieving lateral movement of the reciprocating slide 701.

[0063] Please continue to refer to the instructions attached Figure 6 -Attached Figure 7 , further specifically, in the embodiment of the present invention, a synchronous rotating rod 706 is rotatably installed on the pressure plate 3, the bottom end of the synchronous rotating rod 706 is installed on the rotating push-pull rod 707, and a driving gear 710 is installed on the top of the synchronous rotating rod 706. A driving gear plate 711 is slidably installed on the top side of the pressure plate 3, and the driving gear plate 711 is engaged with the driving gear 710; in addition, a driving rod 712 is movably installed on the pressure plate 3, and a linkage rod 713 is rotatably installed between the driving rod 712 and the driving gear plate 711. Two linkage shafts 714 are rotatably installed on the linkage rod 713, and the two linkage shafts 714 are respectively installed on the driving gear plate 711 and the driving rod 712;

[0064] In addition, a return spring 715 is mounted on the driving rod 712, and the bottom end of the return spring 715 is mounted on the top side of the pressure plate 3. It should be noted that in the embodiment of the present invention, when the pressure plate 3 is reset, the driving rod 712 is squeezed and the return spring 715 is subjected to force. The driving rod 712 moves through a linkage shaft 714, driving the linkage rod 713 to move. The linkage rod 713 drives the driving gear plate 711 to move through another linkage shaft 714, so that the driving gear plate 711 drives the driving gear 710 to rotate. The driving gear 710 drives the rotating push-pull rod 707 to rotate through the synchronous rotating rod 706, so that the rotating push-pull rod 707 drives the reciprocating slide 701 to move through the driving shaft 709. Then, the reciprocating slide 701 scrapes off the rock debris adhered to the bottom side of the pressure plate 3 through the scraping bar 702, thereby achieving the purpose of automatically cleaning the pressure plate 3.

[0065] More specifically, in the embodiment of the present invention, the reciprocating slide 701 is provided with two receiving grooves 703 for collecting rock debris. Furthermore, the reciprocating slide 701 is provided with two limiting slides 704. The bottom side of the pressure plate 3 is provided with two sliding grooves 705. The two limiting slides 704 are slidably mounted in the two sliding grooves 705. It should be noted that in the embodiment of the present invention, the reciprocating slide 701 slides horizontally in the two sliding grooves 705 via the two limiting slides 704, while the reciprocating slide 701 collects rock debris through the two receiving grooves 703.

[0066] Please refer to the instruction manual Figure 8 -Attached Figure 10 Furthermore, in an embodiment of the present invention, a test device for testing rock mechanical properties is provided. The auxiliary lubrication structure 8 also includes two oil pushing plates 804, both of which are movably mounted in a protective box 801. The oil pushing plates 804 move to squeeze the lubricating oil bag 802. Two oil pushing rods 805 are mounted on the oil pushing plates 804. Both of the oil pushing rods 805 are movably mounted on the protective box 801. The two oil pushing rods 805 are connected to a push-pull plate 806, and an arc-shaped seat 809 is mounted on one side of the push-pull plate 806.

[0067] In addition, push brackets 810 are installed on both sides of the pressure plate 3. The movement of the pressure plate 3 drives the two push brackets 810 to squeeze the two arc-shaped seats 809, which is used to drive the two push-pull plates 806 to move. It should be noted that in the embodiment of the present invention, when the pressure plate 3 is reset, it drives the two push brackets 810 to squeeze the two arc-shaped seats 809 to move, so that the arc-shaped seats 809 drive the push-pull plates 806 to move, and then the push-pull plates 806 drive the push-pull plates 804 to move and squeeze the lubricating oil bag 802 through the two oil pushing rods 805, and at the same time drive the return spring 807 to be stressed, and then the lubricating oil in the lubricating oil bag 802 is squeezed out through the oil outlet nozzle 803 and sprayed on the threaded extrusion rod 5, thereby achieving the purpose of automatic lubrication.

[0068] More specifically, in the embodiment of the present invention, a return spring 807 is sleeved on the oil push rod 805, one end of the return spring 807 is mounted on the protective box 801, and the other end of the return spring 807 is mounted on the push-pull plate 806. In addition, a sheath 808 is mounted on one side of the push-pull plate 806, the other side of the sheath 808 is mounted on the protective box 801, and the return spring 807 is located inside the sheath 808. It should be noted that in the embodiment of the present invention, when the push-pull plate 806 is squeezed and moved, it drives the two oil push rods 805 to move and causes the two return springs 807 to be stressed. Therefore, under the rebound force of the two return springs 807, the push-pull plate 806 can be helped to reset, and the provision of the sheath 808 can prevent the return spring 807 from rusting.

[0069] In summary, the working principle of a testing device for testing rock mechanical properties provided by an embodiment of the present invention, that is, the testing method using the testing device of an embodiment of the present invention, is as follows:

[0070] During the test, the rock is placed on the placement seat 4, and the driving motor 10 is started. When the threaded extrusion rod 5 is driven to move downward, the threaded extrusion rod 5 drives the pressure plate 3 to move downward. The pressure plate 3 moves downward and squeezes the two lower pressure frames 611 through the two downward pressure rods 614, so that the lower pressure frames 611 move in the lower pressure groove 612 and the rebound spring 613 is stressed. The lower pressure frame 611 moves through the extrusion ring 610 to drive the four downward pressure horizontal push plates 609 to move, and then drives the four synchronous moving brackets 601 to move. The synchronous moving bracket 601 moves in the horizontal pulling groove 606 through the horizontal pull rod 607 and drives the horizontal pulling spring 608 to be stressed. The synchronous moving bracket 601 drives the detection push plate 603 to separate from the placement seat 4 through the adapter seat 602; similarly, when the pressure plate 3 moves upward, causing the downward pressure rod 614 to separate from the lower pressure bracket 611, during the resetting process of the synchronous moving bracket 601, the detection push plate 603 is driven to contact the placement seat 4 through the adapter seat 602. If the surface of the placement seat 4 is deformed, it will squeeze any one or more detection push plates 603 to retract, drive the buffer spring 605 to be stressed, and trigger the emergency stop switch 604, so that the drive motor 10 stops suddenly, avoiding inaccurate test results due to the deformation of the placement seat 4, and at the same time avoiding waste of samples;

[0071] When the cam 711 is in the state of rotation and the gear 710 is in the state of rotation, the cam 712 is in the state of rotation and the gear 710 is in the state of rotation. When the cam 711 is in the state of rotation and the gear 710 is in the state of rotation, the cam 712 is in the state of rotation and the gear 710 is in the state of rotation. When the cam 711 is in the state of rotation and the gear 710 is in the state of rotation, the cam 712 is in the state of rotation and the gear 710 is in the state of rotation. When the cam 711 is in the state of rotation and the gear 710 is in the state of rotation, the cam 712 is in the state of rotation and the gear 710 is in the state of rotation. When the cam 711 is in the state of rotation and the gear 710 is in the state of rotation, the cam 712 is in the state of rotation and the gear 710 is in the state of rotation.

[0072] Furthermore, when the pressure plate 3 is reset, the two pushing brackets 810 are driven to squeeze the two arc seats 809 to move, so that the arc seat 809 drives the push-pull plate 806 to move, and the push-pull plate 806 drives the push-pull plate 804 to move through the two oil push rods 805, and at the same time drives the return spring 807 to be subjected to force, so that the push-pull plate 804 squeezes the lubricating oil bag 802, and then squeezes the lubricating oil in the lubricating oil bag 802 through the oil outlet nozzle 803 and sprays it on the threaded extrusion rod 5, completing the automatic spraying of the lubricating oil; in addition, when the pressure plate 3 continues to move upward, the pushing bracket 810 is separated from the arc seat 809, and under the rebound force of the return spring 807, the push-pull plate 806 drives the push-pull plate 804 to reset.

[0073] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A testing device for testing rock mechanical properties, characterized in that: It includes an upper support and a lower support, wherein the four corners of the upper support and the lower support are connected to guide columns, pressure plates are movably mounted on the four guide columns, a placement seat for placing rocks is mounted on the lower support, a threaded extrusion rod is movably mounted on the upper support, the pressure plate is mounted on the bottom end of the threaded extrusion rod, and a driving motor for driving the threaded extrusion rod is mounted on the upper support; It also includes an active leveling detection structure, which is installed on the lower support and is used to detect the levelness of the surrounding area of ​​the placement seat; The active leveling detection structure includes four synchronous movable brackets, which are movably mounted on the four sides of the lower support respectively. An adapter is mounted on the synchronous movable bracket, and a detection push plate is movably mounted on the bottom side of the adapter. An emergency stop switch is mounted on the inner wall of the adapter, and the movement of the detection push plate is used to trigger the emergency stop switch. The pressure plate further comprises a reset automatic cleaning structure, the reset automatic cleaning structure being mounted on the pressure plate and being used to actively clean the bottom side of the pressure plate; the reset automatic cleaning structure comprises a reciprocating slide bar, the reciprocating slide bar being slidably mounted on the bottom side of the pressure plate, a scraping bar being mounted on the top side of the reciprocating slide bar, and the reciprocating slide bar moving through the scraping bar to scrape off rock debris on the bottom side of the pressure plate; The auxiliary lubrication structure is further included, the auxiliary lubrication structure is installed on the top side of the upper support, and the auxiliary lubrication structure is used to actively lubricate the threaded extruded rod; the auxiliary lubrication structure includes a protection box, the protection box is installed on the top side of the upper support, a plurality of oil nozzles are installed on the inner wall of the protection box, and both sides of the protection box are hollow and contain lubricating oil bags, the lubricating oil bags are connected to the plurality of oil nozzles, and the lubricating oil in the lubricating oil bags is sprayed onto the threaded extruded rod through the plurality of oil nozzles; The active leveling detection structure further includes four downward-pressing transverse pushing plates, which are respectively mounted on the four synchronously movable brackets; Two lower pressing frames are movably mounted on the lower support, and extrusion rings are mounted on the two lower pressing frames. Two downward pressing rods are mounted on the bottom side of the pressure plate, and the pressure plate moves by squeezing the two lower pressing frames through the two downward pressing rods. Two lower pressing grooves are provided on the top side of the lower support, and the two lower pressing frames are movably installed in the two lower pressing grooves respectively. A rebound spring is installed on the bottom side of the lower pressing frame, and the bottom end of the rebound spring is installed on the bottom inner wall of the lower pressing groove; The lower support is provided with transverse grooves on all sides, and the four synchronous movable brackets are each equipped with a transverse tie rod, which is slidably installed in the four transverse grooves. A transverse spring is installed on the inner wall of the transverse groove, and the other end of the transverse spring is installed on the transverse tie rod; Two buffer springs are installed on one side of the detection push plate, and the other end of the buffer spring is installed on the inner wall of the adapter; The reset automatic cleaning structure further includes a rotating push-pull rod, which is rotatably mounted on the bottom side of the pressure plate; A driving groove is provided on the bottom side of the reciprocating slide rod, and a driving shaft is rotatably mounted on the rotating push-pull rod, and the driving shaft is movably mounted in the driving groove; A synchronous rotating rod is rotatably mounted on the pressure plate, the bottom end of the synchronous rotating rod is mounted on the rotating push-pull rod, a driving gear is mounted on the top end of the synchronous rotating rod, a driving gear plate is slidably mounted on the top side of the pressure plate, and the driving gear plate is meshed with the driving gear; A driving rod is movably mounted on the pressure plate, a linkage rod is rotatably mounted between the driving rod and the driving gear plate, two linkage shafts are rotatably mounted on the linkage rod, and the two linkage shafts are respectively mounted on the driving gear plate and the driving rod; A return spring is mounted on the driving rod, and a bottom end of the return spring is mounted on the top side of the pressure plate; The reciprocating slide bar is provided with two receiving grooves for collecting rock debris; Two limiting slides are installed on the reciprocating slide bar, and two sliding grooves are provided on the bottom side of the pressure plate, and the two limiting slides are respectively slidably installed in the two sliding grooves; The auxiliary lubrication structure further includes two oil pushing plates, both of which are movably mounted in the protection box, and the oil pushing plates move to squeeze the lubricating oil bag; Two oil pushing rods are installed on the oil pushing plate, and the two oil pushing rods are movably installed on the protection box. The two oil pushing rods are connected to a push-pull plate, and an arc seat is installed on one side of the push-pull plate; Push brackets are installed on both sides of the pressure plate. The movement of the pressure plate drives the two push brackets to squeeze the two arc-shaped seats, which is used to drive the two push-pull plates to move.

2. A testing device for testing rock mechanical properties according to claim 1, characterized in that: A return spring is sleeved on the oil pushing rod, one end of the return spring is mounted on the protection box, and the other end of the return spring is mounted on the push-pull plate; A sheath is installed on one side of the push-pull plate, the other side of the sheath is installed on the protection box, and the return spring is located in the sheath.

3. A method for testing rock mechanical properties, which is carried out using a testing device for testing rock mechanical properties according to any one of claims 1-2, characterized in that: The following steps are involved: S1. The driving motor starts, and drives the pressure plate to reset through the threaded extrusion rod, so that the pressure plate no longer squeezes the two downward pressure rods, and the lower pressure frame drives the extrusion ring to reset, and under the pulling force of multiple horizontal tension springs, pulls multiple synchronous moving brackets to reset; S2. The synchronous moving bracket is reset, and the detection push plate is driven to contact the placement seat through the adapter seat. When the surface of the placement seat is deformed, one or more detection push plates are squeezed to retract, and the buffer spring is driven to bear force, and the emergency stop switch is triggered at the same time, causing the drive motor to stop suddenly; S3. When the pressure plate is reset, the driving rod is squeezed and moves on the pressure plate. The driving rod moves through the linkage rod to drive the driving gear plate to move, so that the driving gear plate drives the gear to rotate, and the gear drives the rotating push-pull rod to rotate through the synchronous rotating rod, so that the rotating push-pull rod drives the reciprocating slide rod to move through the driving shaft, and then the reciprocating slide rod scrapes off the rock debris adhered to the bottom side of the pressure plate through the scraping bar; S4. The pressure plate is reset, driving the two push brackets to squeeze the two arc seats to move, so that the arc seats drive the push-pull plate to move, and the push-pull plate drives the oil push plate to move through the two oil push rods, and then the oil push plate squeezes the lubricating oil bag, and then the lubricating oil in the lubricating oil bag is squeezed out through the oil outlet nozzle and sprayed on the threaded extrusion rod.

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