Static friction angle measuring device based on simulated rock structural surface slippage

Abstract

The utility model discloses a static friction angle measuring device based on simulated rock structural surface slippage, which comprises a shell, a moving mechanism is arranged in the shell, the moving mechanism is in driving connection with a moving bearing platform, a coating box body is arranged above the moving bearing platform, a mounting groove is formed in the lower part of the coating box body, and a plurality of fixing screws are in threaded connection with the periphery of the coating box body. The inner end of the fixing screw is located in the mounting groove, a testing box is arranged on the shell and comprises a measuring rod, and the end of the measuring rod faces the wrapping box body.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, and more specifically, to a static friction angle measuring device based on simulated rock structure surface slippage. Background Technology

[0002] Previous equipment for measuring the friction angle of rock mass surfaces used a mechanical structure to decompose external forces into forces along the X and Z axes. Two independent sensors (a pressure sensor and a thrust sensor) then captured the normal and tangential forces applied to the measuring device, respectively. The friction angle data was obtained by converting and calculating the data collected from the two sensors. However, this method of decomposing external forces into the X and Y directions through a mechanical structure may result in incomplete force decomposition in these directions, causing measurement deviations and requiring manual data correction. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a static friction angle measuring device based on simulated rock structure surface slip.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a static friction angle measuring device based on simulated rock surface slippage, including a housing, a moving mechanism installed inside the housing, a moving platform driven by the moving mechanism, a covering box set above the moving platform, an installation groove opened at the lower part of the covering box, a number of fixing screws threaded to the outer periphery of the covering box, the inner ends of the fixing screws located in the installation groove, a test box set on the housing, the test box including a measuring rod, the end of the measuring rod facing the covering box.

[0006] Furthermore, the moving mechanism includes a mounting platform installed inside the housing, a lead screw rotatably mounted on the mounting platform, a lead screw slider mounted on the lead screw, a support block connected to the upper part of the lead screw slider, and the upper end of the support block connected to the bottom surface of the moving platform.

[0007] Furthermore, a transverse guide rod is provided on the mounting platform. The transverse guide rod is parallel to the lead screw and passes through the lead screw slider.

[0008] Furthermore, one end of the lead screw extends out of the housing and is connected to a handwheel.

[0009] Furthermore, a height adjustment mechanism is provided inside the housing, and the height adjustment mechanism is connected to a lifting platform, on which the test box is installed.

[0010] Furthermore, the height adjustment mechanism includes several vertical guide rods, with sliding blocks slidably mounted on the vertical guide rods. A lifting plate is installed on the upper part of the sliding block, and several support rods are connected to the upper part of the lifting plate. The upper ends of the support rods are connected to the bottom of the lifting platform. The height adjustment mechanism also includes a locking mechanism.

[0011] Furthermore, the locking mechanism includes a locking block installed at the bottom of the lifting plate, and a locking screw threaded onto the housing, with the end of the locking screw abutting against the side of the locking block.

[0012] Furthermore, a placement slot is provided on the upper part of the movable platform.

[0013] The beneficial effects of this utility model are: the stone material inside the encasing box is fixed by fixing screws, which can be adapted to various rock samples of different sizes; the stone material is moved by the moving mechanism, and the horizontal force is transmitted to the measuring rod, avoiding the deviation of manual force application. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a static friction angle measuring device based on simulated rock surface slip in this embodiment;

[0015] Figure 2 This is a schematic diagram of the internal structure of the base shell in this embodiment;

[0016] Figure 3 This is a schematic diagram of the installation structure of the movable hole in this embodiment.

[0017] Reference numerals: 1. Shell; 2. Movable support platform; 3. Placement slot; 4. Covering box; 5. Fixing screw; 6. Lifting platform; 7. Test box; 8. Measuring rod; 9. Locking screw; 10. Mounting platform; 11. Lead screw; 12. Lead screw slider; 13. Support block; 14. Handwheel; 15. Horizontal guide rod; 16. Vertical guide rod; 17. Sliding block; 18. Lifting plate; 19. Support rod; 20. Locking block; 21. Top plate; 22. Bottom plate; 23. Moving hole; 24. Lower stone; 25. Upper stone. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-3As shown, a static friction angle measuring device based on simulated rock surface slippage includes a housing 1, which includes a top plate 21 and a bottom plate 22. A moving mechanism and a height adjustment mechanism are installed inside the housing 1. A lifting platform 6 is mounted on the height adjustment mechanism, and a test box 7 is mounted on the upper part of the lifting platform 6. The test box 7 includes a force sensor, and a measuring rod 8 is connected to the force sensor, with the end of the measuring rod 8 facing the housing 4.

[0020] The moving mechanism includes a mounting platform 10 mounted on a base plate 22. A lead screw 11 is rotatably mounted on the mounting platform 10, and a lead screw slider 12 is mounted on the lead screw 11. Two support blocks 13 are connected to the upper part of the lead screw slider 12. Two moving holes 23 are opened on the top plate 21, and the moving holes 23 are arranged along the length direction of the top plate 21. The upper end of the support block 13 passes through the moving holes 23 and is connected to a moving support platform 2. A placement groove 3 is opened on the upper part of the moving support platform 2. One end of the lead screw 11 passes through the housing 1 and is connected to a handwheel 14. The lower stone 24 is placed in the placement groove 3 of the moving support platform 2. A covering box 4 is provided above the moving support platform 2. A mounting groove is opened at the lower part of the covering box 4, and the upper stone 25 is placed in the mounting groove. A fixing screw 5 is threadedly connected to the outer circumference of the covering box 4. By tightening the fixing screw 5, the inner end of the fixing screw 5 abuts against the outer circumferential surface of the upper stone 25, thereby fixing the upper stone 25 in the mounting groove of the covering box 4. The setting of fixing screw 5 allows rock samples of different sizes to be fixedly installed in the mounting groove of the cover box 4.

[0021] The mounting platform 10 is provided with several transverse guide rods 15, which are parallel to the lead screw 11 and pass through the lead screw slider 12. The transverse guide rods 15 guide the translation of the lead screw slider 12.

[0022] The height adjustment mechanism includes several vertical guide rods 16 installed between the top plate 21 and the bottom plate 22. Sliding blocks 17 are slidably mounted on the vertical guide rods 16, and a lifting plate 18 is fixedly mounted on the upper part of the sliding blocks 17. The vertical guide rods 16 pass through the lifting plate 18. Several support rods 19 are connected to the upper part of the lifting plate 18. The support rods 19 are vertically arranged, and their upper ends pass through the top plate 21 and connect to the bottom of the lifting platform 6. The height adjustment mechanism also includes a locking mechanism, which includes a locking block 20 installed at the bottom of the lifting plate 18. A locking screw 9 is threaded onto the side wall of the housing 1. The end of the locking screw 9 abuts against the side of the locking block 20, thereby locking the height of the lifting plate 18. Loosening the locking screw 9 disengages the end of the locking screw 9 from the side of the locking block 20, allowing adjustment of the height of the lifting plate 18, thus changing the height of the lifting platform 6.

[0023] Clean the structural surfaces of the sample, specifically the upper surface of the lower stone 24 and the lower surface of the upper stone 25. The lower stone 24 is fixed to the movable support 2, and the upper stone 25 is fixed inside the covering box 4 by fixing screws 5 to weigh the overall weight. The upper stone 25 presses down on the lower stone 24. Adjust the height of the measuring rod 8 using the height adjustment mechanism so that the measuring rod 8 is aligned with the center of the covering box 4. Load weights onto the covering box 4. Rotate the lead screw 11 via the handwheel 14, thereby causing the movable support 2 to slowly move towards the measuring rod 8 via the lead screw slider 12. Before any relative displacement occurs between the lower stone 24 and the upper stone 25, the movable support 2 moves the lower stone 24, the upper stone 25, and the covering box 4 together. The covering box 4 acts on the measuring rod 8, which then transmits the force to the force sensor. When movement occurs between the lower stone 24 and the upper stone 25, the force sensor detects the maximum horizontal force. The value of the friction angle of the structural surface can be calculated using the formula tanθ=T / F, where θ is the friction angle of the structural surface, T is the force along the structural surface (i.e., the maximum horizontal force detected by the force sensor), and F is the pressure perpendicular to the structural surface (i.e., the weight of the weight plus the total weight of 25, the covering box 4, and the fixing screw 5).

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A static friction angle measuring device based on simulated rock structural surface slip, characterized in that, The device includes a housing (1), a moving mechanism installed inside the housing (1), a moving platform (2) driven by the moving mechanism, a covering box (4) above the moving platform (2), an installation groove at the bottom of the covering box (4), a plurality of fixing screws (5) threadedly connected to the outer circumference of the covering box (4), the inner end of the fixing screws (5) being located in the installation groove, a test box (7) on the housing (1), the test box (7) including a measuring rod (8), the end of the measuring rod (8) being set toward the covering box (4).

2. The static friction angle measuring device based on simulated rock structure surface slippage according to claim 1, characterized in that, The moving mechanism includes a mounting platform (10) installed inside the housing (1), a lead screw (11) is rotatably mounted on the mounting platform (10), a lead screw slider (12) is mounted on the lead screw (11), a support block (13) is connected to the upper part of the lead screw slider (12), and the upper end of the support block (13) is connected to the bottom surface of the moving support platform (2).

3. The static friction angle measuring device based on simulated rock structure surface slippage according to claim 2, characterized in that, A transverse guide rod (15) is provided on the mounting platform (10). The transverse guide rod (15) is parallel to the lead screw (11) and passes through the lead screw slider (12).

4. The static friction angle measuring device based on simulated rock structure surface slippage according to claim 2, characterized in that, One end of the lead screw (11) extends out of the housing (1) and is connected to a handwheel (14).

5. The static friction angle measuring device based on simulated rock structural surface slippage according to claim 1, characterized in that, The housing (1) is provided with a height adjustment mechanism, which is connected to a lifting platform (6). The test box (7) is installed on the lifting platform (6).

6. The static friction angle measuring device based on simulated rock structural surface slippage according to claim 5, characterized in that, The height adjustment mechanism includes several vertical guide rods (16), a sliding block (17) is slidably disposed on the vertical guide rods (16), a lifting plate (18) is installed on the upper part of the sliding block (17), several support rods (19) are connected to the upper part of the lifting plate (18), and the upper end of the support rods (19) is connected to the bottom of the lifting platform (6). The height adjustment mechanism also includes a locking mechanism.

7. The static friction angle measuring device based on simulated rock structural surface slippage according to claim 6, characterized in that, The locking mechanism includes a locking block (20) installed on the lower part of the lifting plate (18), and a locking screw (9) is threadedly connected to the housing (1), with the end of the locking screw (9) abutting against the side of the locking block (20).

8. The static friction angle measuring device based on simulated rock structure surface slippage according to claim 1, characterized in that, The movable support platform (2) has a placement slot (3) on its upper part.

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