Rock rotary shear testing machine

Abstract

The utility model discloses a rock rotary shear testing machine which comprises a supporting frame, the supporting frame is installed on external equipment, a locking mechanism is arranged on the supporting frame, the locking mechanism comprises a bearing mechanism, a hydraulic cylinder, a fixing sleeve, an inserting rod, a cutting knife, a limiting rod, a sliding block, a limiting ring and a telescopic mechanism, the bearing mechanism is installed on the supporting frame, and the hydraulic cylinder is installed on the supporting frame. The hydraulic cylinder is installed on the supporting frame, the fixing sleeve is installed on the extending section of the hydraulic cylinder, the cutting knife and the limiting rod are installed at the two ends of the inserting rod respectively, the limiting groove is formed in the fixing sleeve, the locking mechanism provides a reliable and stable cutting knife fixing mode, it is guaranteed that the cutting knife cannot loosen in the rock shearing test process, and the cutting knife is not prone to loosening. Through the design of the bearing mechanism, the hydraulic cylinder, the fixing sleeve, the insertion rod and the cutting knife, the locking mechanism can automatically lock the cutting knife, and the stable position of the cutting knife can be kept even in a long-time or high-strength shear test, so that the accuracy and the safety of the test are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rock rotary shear test, and more specifically, it relates to a rock rotary shear testing machine. Background Art

[0002] In the existing technology, rock rotary shear testing machines are mainly used to test the shear strength and other mechanical properties of rocks. During the operation of such equipment, corresponding cutting tools need to be used for different types of rocks. To achieve the quick replacement and adaptation of different cutting tools, these cutting tools usually need to be fixedly connected to the testing machine in a certain mechanical way. However, most of the existing fixing methods adopt traditional threaded connections or clamping mechanisms. These methods are prone to loosening of the cutting tool due to wear of the contact surface or natural relaxation of the threads during long-term use or under severe mechanical vibrations. Once the cutting tool becomes loose, it will not only affect the accuracy and repeatability of the test results, but may also lead to damage to the equipment or even safety accidents. Therefore, the existing fixing methods have obvious deficiencies in ensuring long-term reliable connection. Summary of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the problems existing in the prior art, the utility model provides a rock rotary shear testing machine to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solution: A rock rotary shear testing machine includes a support frame installed on an external device. A locking mechanism is provided on the support frame. The locking mechanism includes a receiving mechanism, a hydraulic cylinder, a fixed sleeve, an insertion rod, a cutting tool, a limiting rod, a slider, a limiting ring, and a telescopic mechanism. The receiving mechanism is installed on the support frame, the hydraulic cylinder is installed on the support frame, the fixed sleeve is installed on the extending section of the hydraulic cylinder. The two ends of the insertion rod are respectively installed with a cutting tool and a limiting rod. A limiting groove is opened on the fixed sleeve, and the limiting rod is clamped in the limiting groove. A plurality of contraction grooves are equidistantly opened on the inner wall of the fixed sleeve. Each contraction groove is slidably connected with a slider, and each slider is installed with a plurality of the limiting rings. A plurality of annular grooves are opened on the side wall of the insertion rod, and the limiting rings are clamped in the annular grooves. The telescopic mechanism is installed on the fixed sleeve.

[0007] The utility model is further arranged such that the telescopic mechanism includes a threaded section and a thrust bearing. The threaded section is threadedly connected to the fixed sleeve. A hexagonal groove is opened on the side wall of the threaded section. The insertion rod is slidably connected in the threaded section, and the thrust bearing is attached to the threaded section. The design of the telescopic mechanism ensures the fixation of the cutting tool.

[0008] The utility model is further arranged such that a plurality of push springs are provided on each of the sliders, and each of the push springs abuts against a thrust bearing respectively. The design of the push springs ensures the transmission of thrust.

[0009] The utility model is further arranged such that the receiving mechanism includes a protruding seat, a cylinder and a tray. The protruding seat is installed on the support frame, the cylinder is installed on the protruding seat, and a tray is provided on the protruding end of the cylinder. The design of the receiving mechanism ensures the movement of the rock.

[0010] The utility model is further arranged such that a rotating seat is provided on the support frame, a transverse plate is rotatably provided on the rotating seat, and a guide rod is provided on the transverse plate. The design of the rotating seat ensures the angle adjustment of the rock.

[0011] The utility model is further arranged such that a transverse frame is slidably provided on the guide rod, and receiving plates are symmetrically provided on the transverse frame. The design of the receiving plates ensures the limitation of the rock.

[0012] The utility model is further arranged such that a motor is provided on the transverse plate, a lead screw is provided on the protruding end of the motor, and the lead screw is threadedly connected to the transverse frame. The design of the motor ensures the movement of the transverse frame.

[0013] The utility model is further arranged such that the rock is fitted between the two receiving plates.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a rock rotary shearing test machine, which has the following beneficial effects:

[0016] 1. The locking mechanism provides a reliable and stable way to fix the cutting tool, ensuring that the cutting tool will not become loose during the rock shearing test. Through the design of the receiving mechanism, hydraulic cylinder, fixed sleeve, insertion rod and cutting tool, the locking mechanism can automatically lock the cutting tool, and even in long-term or high-intensity shearing tests, it can maintain the stable position of the cutting tool, thus improving the accuracy and safety of the test.

[0017] 2. The telescopic mechanism provides a flexible and controllable way to adjust the cutting tool, making the installation and adjustment of the cutting tool more convenient. Through the configuration of the threaded section and thrust bearing, the telescopic mechanism can accurately control the position of the cutting tool, enabling users to quickly replace and adjust the cutting tool according to different test requirements, thus improving the operation efficiency and adaptability of the equipment.

[0018] 3. The receiving mechanism provides a stable and adjustable rock bearing method, ensuring the correct position and stability of the rock during the shear test. Through the configuration of the extension seat, cylinder, tray, and transverse plate, the receiving mechanism can support and adjust the angle of the rock, enabling the rock to maintain the correct position during the shear test, thereby improving the accuracy and efficiency of the test. At the same time, the adjustment function of the receiving mechanism also allows users to adjust the angle of the rock according to different test requirements, further enhancing the flexibility and applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a rock rotary shear testing machine in the present utility model;

[0020] Figure 2 FIG. 2 is a schematic diagram of the structure of the locking mechanism in the present utility model;

[0021] Figure 3 In the present utility model Figure 2 FIG. 3 is a schematic cross-sectional structure diagram;

[0022] Figure 4 FIG. 4 is a schematic diagram of the structure of the slider in the present utility model;

[0023] Figure 5 FIG. 5 is a schematic diagram of the structure of the cutting tool in the present utility model.

[0024] In the figures: 1, support frame; 2, hydraulic cylinder; 3, fixed sleeve; 4, insertion rod; 5, cutting tool; 6, limit rod; 7, slider; 8, limit ring; 9, limit groove; 10, shrinkage groove; 11, annular groove; 12, threaded section; 13, thrust bearing; 14, hexagonal groove; 15, push spring; 16, extension seat; 17, cylinder; 18, tray; 20, rotating seat; 21, transverse plate; 22, guide rod; 23, transverse frame; 24, receiving plate; 25, motor; 26, lead screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0026] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0027] In the present utility model, unless otherwise specified, the orientations such as "upper" and "lower" generally refer to the directions shown in the drawings, or to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left" and "right" generally refer to the left and right shown in the drawings; "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0028] Please refer to Figures 1-5 , a rock rotary shear testing machine, including a support frame 1, the support frame 1 is installed on an external device, a locking mechanism is arranged on the support frame 1, the locking mechanism includes a receiving mechanism, a hydraulic cylinder 2, a fixing sleeve 3, an insertion rod 4, a cutting knife 5, a limiting rod 6, a slider 7, a limiting ring 8 and a telescopic mechanism, the receiving mechanism is installed on the support frame 1, the hydraulic cylinder 2 is installed on the support frame 1, the fixing sleeve 3 is installed on the extending section of the hydraulic cylinder 2, cutting knives 5 and limiting rods 6 are respectively installed at both ends of the insertion rod 4, a limiting groove 9 is opened on the fixing sleeve 3, the limiting rod 6 is clamped in the limiting groove 9, a plurality of shrinkage grooves 10 are equidistantly opened on the inner wall of the fixing sleeve 3, a slider 7 is slidably connected in each shrinkage groove 10, a plurality of limiting rings 8 are installed on each slider 7, a plurality of annular grooves 11 are opened on the side wall of the insertion rod 4, the limiting rings 8 are clamped in the annular grooves 11, the telescopic mechanism is installed on the fixing sleeve 3, the telescopic mechanism includes a threaded section 12 and a thrust bearing 13, the threaded section 12 is threadedly connected to the fixing sleeve 3, a hexagonal groove 14 is opened on the side wall of the threaded section 12, the insertion rod 4 is slidably connected in the threaded section 12, the thrust bearing 13 is attached to the threaded section 12, a plurality of push springs 15 are arranged on each slider 7, and each push spring 15 respectively abuts against the thrust bearing 13.

[0029] In this embodiment, when it is necessary to replace the corresponding cutting knife 5, first slide the insertion rod 4 on the corresponding cutting knife 5 into the threaded section 12, then insert the limiting rod 6 into the limiting groove 9, then rotate the threaded section 12 and drive the push spring 15 to move upward through the thrust bearing 13, then make the slider 7 slide along the shrinkage groove 10 so that the limiting ring 8 is clamped in the annular groove 11, thereby limiting it. Since the friction angle of the shrinkage groove 10 is greater than the inclination angle, when the insertion rod 4 moves upward, it will be subjected to corresponding friction, so that the insertion rod 4 is in a self-locking state, and no sliding will occur no matter how the cutting knife 5 is used, thus ensuring the stability of use.

[0030] Please refer to Figure 1, as an implementation mode of the receiving mechanism: The receiving mechanism includes an extension seat 16, a cylinder 17 and a tray 18. The extension seat 16 is installed on the support frame 1, the cylinder 17 is installed on the extension seat 16, a tray 18 is provided on the extending end of the cylinder 17, a rotating seat 20 is provided on the support frame 1, a transverse plate 21 is rotatably provided on the rotating seat 20, a guide rod 22 is provided on the transverse plate 21, a transverse frame 23 is slidably provided on the guide rod 22, receiving plates 24 are symmetrically provided on the transverse frame 23, a motor 25 is provided on the transverse plate 21, a lead screw 26 is provided on the extending end of the motor 25, and the lead screw 26 is threadedly connected to the transverse frame 23. The rock is fitted between the two receiving plates 24.

[0031] More specifically, since the rock is placed between the two receiving plates 24 and the transverse plate 21 can rotate along the rotating seat 20, the corresponding angle can be adjusted. Then, the motor 25 is started, and since the lead screw 26 is threadedly connected to the transverse frame 23, the transverse frame 23 can be driven to move towards the direction of the tray 18. Then, the rock can be conveyed directly below the tray 18. Then, the cylinder 17 is started to support the rock. Then, the cutting knife 5 is driven by the hydraulic cylinder 2 to perform a shear test on the rock. When the angle needs to be adjusted, only the transverse frame 23 needs to be rotated along the rotating seat 20, thus completing the angle adjustment and further completing the shear test of the rock.

[0032] In summary, when the overall equipment is in use or operation: When the corresponding cutting knife 5 needs to be replaced, first, the insertion rod 4 on the corresponding cutting knife 5 is slidably connected in the threaded section 12, then the limiting rod 6 is inserted into the limiting groove 9, and then the threaded section 12 is rotated and the push spring 15 is driven to move upward through the thrust bearing 13. Then, the slider 7 slides along the contraction groove 10, and the limiting ring 8 is stuck in the annular groove 11, thereby limiting it. Since the friction angle of the contraction groove 10 is greater than the inclination angle, when the insertion rod 4 moves upward, it will be subject to the corresponding friction force, so that the insertion rod 4 is in a self-locking state, and the cutting knife 5 will not slide no matter how it is used, thus ensuring the stability of use.

[0033] Since the rock is placed between the two receiving plates 24 and the transverse plate 21 can rotate along the rotating seat 20, the corresponding angle can be adjusted. Then, the motor 25 is started, and since the lead screw 26 is threadedly connected to the transverse frame 23, the transverse frame 23 can be driven to move towards the direction of the tray 18. Then, the rock can be conveyed directly below the tray 18. Then, the cylinder 17 is started to support the rock. Then, the cutting knife 5 is driven by the hydraulic cylinder 2 to perform a shear test on the rock. When the angle needs to be adjusted, only the transverse frame 23 needs to be rotated along the rotating seat 20, thus completing the angle adjustment and further completing the shear test of the rock.

[0034] Among all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For all the cases of fixed connection mentioned above, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock rotary shear testing machine, comprising a support frame (1), the support frame (1) being mounted on an external device, and characterized in that: The support frame (1) is provided with a locking mechanism, and the locking mechanism comprises a receiving mechanism, a hydraulic cylinder (2), a fixing sleeve (3), an insertion rod (4), a cutting knife (5), a limiting rod (6), a sliding block (7), a limiting ring (8) and a telescopic mechanism. The receiving mechanism is mounted on the support frame (1), the hydraulic cylinder (2) is mounted on the support frame (1), the fixing sleeve (3) is mounted on the extended section of the hydraulic cylinder (2), and the cutting knife (5) and the limiting rod (6) are respectively mounted on both ends of the insertion rod (4). A limiting groove (9) is provided on the fixed sleeve (3), the limiting rod (6) is clamped in the limiting groove (9), a plurality of contraction grooves (10) are equidistantly provided on the inner wall of the fixed sleeve (3), a slider (7) is slidably connected in each of the contraction grooves (10), a plurality of limiting rings (8) are installed on each of the sliders (7), a plurality of annular grooves (11) are provided on the side wall of the insertion rod (4), the limiting rings (8) are clamped in the annular grooves (11), and the telescopic mechanism is installed on the fixed sleeve (3).

2. A rock rotary shear testing machine according to claim 1, characterized in that: The telescopic mechanism comprises a threaded section (12) and a thrust bearing (13); the threaded section (12) is threadedly connected to the fixed sleeve (3); a hexagonal groove (14) is provided on the side wall of the threaded section (12); the insertion rod (4) is slidably connected in the threaded section (12); and the thrust bearing (13) is fitted on the threaded section (12).

3. A rock rotary shear testing machine according to claim 2, characterized in that: Each of the slide blocks (7) is provided with a plurality of push springs (15), and each of the push springs (15) is respectively in contact with a thrust bearing (13).

4. The rock rotary shear testing machine according to claim 1, characterized in that: The receiving mechanism comprises an extending seat (16), a cylinder (17) and a tray (18); the extending seat (16) is mounted on the support frame (1), the cylinder (17) is mounted on the extending seat (16), and the tray (18) is arranged on the extending end of the cylinder (17).

5. A rock rotary shear testing machine according to claim 4, characterized in that: The support frame (1) is provided with a rotating seat (20), a transverse plate (21) is rotatably provided on the rotating seat (20), and a guide rod (22) is provided on the transverse plate (21).

6. A rock rotary shear testing machine according to claim 5, characterized in that: A transverse frame (23) is slidably provided on the guide rod (22), and a receiving plate (24) is symmetrically provided on the transverse frame (23).

7. A rock rotary shear testing machine according to claim 6, characterized in that: The transverse plate (21) is provided with a motor (25), the protruding end of the motor (25) is provided with a lead screw (26), and the lead screw (26) is threadedly connected to the transverse frame (23).

8. The rock rotary shear testing machine according to claim 7, characterized in that: The rock is fitted between the two receiving plates (24).

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