An auxiliary platform for rock P-wave testing

Abstract

The utility model relates to the technical field of rock ultrasonic testing, especially to a kind of rock longitudinal wave test auxiliary platform;Including base, the top surface four corners of base have fixed rod, fixed rod top center is connected with slide bar, the top of base is symmetrical with a pair of clamping device, and the both ends of clamping device have cylindrical slider, and cylindrical slider is slidably connected with slide bar;The bottom center of clamping device has connecting block, and the short side center of base has fixed nut, and fixed nut is connected with connecting block between screw rod;There is a placing table between clamping device, and placing table is located above base.The utility model provides rock longitudinal wave test auxiliary platform, by placing table, rock is placed above placing table, and rock is clamped and fixed using baffle on placing table, and mutually cooperate with clamping device, can guarantee that longitudinal wave transducer and rock sample center are on the same axis, avoid artificial factor to influence experimental error, and simplify operation procedure, improve experimental efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrasonic testing of rocks, and in particular to an auxiliary platform for longitudinal wave testing of rocks. Background Technology

[0002] The longitudinal wave velocity (P-wave) of a rock refers to the speed at which longitudinal waves (P-waves) propagate in the rock medium. It is closely related to the internal pore structure of the rock, as well as rock mechanical parameters such as elastic modulus, Poisson's ratio, and strength. It is an important indicator for evaluating rock quality and integrity, and also provides important reference for geological exploration and underground engineering applications.

[0003] In existing technologies, the main method for P-wave testing of rocks is to first measure the size of the rock sample, then hold the P-wave transducer at both ends of the sample, and finally operate the ultrasonic testing instrument to issue a test command and measure the wave velocity. This method involves measuring the length of the rock sample before each P-wave test, which is cumbersome. During measurement, the P-wave transducer must be held firmly with both hands and clamped at both ends of the sample, making it inconvenient for one person to operate the main unit of the ultrasonic testing instrument. Furthermore, it is difficult to ensure that the P-wave transducers on both sides are on the same axis as the center of the rock sample during measurement. Additionally, a coupling agent needs to be applied between the P-wave transducer and the rock sample during testing, and the transducer is prone to slippage when held by hand. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides an auxiliary platform for rock longitudinal wave testing.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: It includes a rectangular base with fixing rods at the four corners of its top surface. Sliding rods are connected to the center of the top of the fixing rods at both ends of the longer side of the base. A pair of clamping devices are symmetrically arranged above the base, with cylindrical sliders at both ends of each clamping device, which are slidably connected to the sliding rods. Anti-slip rubber is provided inside the clamping devices, and fixing bolts are provided on both sides of the clamping devices. A connecting block is provided at the center of the bottom of the clamping devices, and a fixing nut is provided at the center of the shorter side of the base. A lead screw connects the fixing nut and the connecting block. A placement platform is provided between the clamping devices, located above the base.

[0006] Preferably, a groove is provided at the center of the top surface of the placement platform. The groove is parallel to the slide rod. A pair of baffles are symmetrically arranged inside the groove. The other end of the baffle is located above the base. A scale plate is provided on one side of the baffle above the base. The top surface of the scale plate is in contact with the top surface of the base. One side of the baffle is in contact with one side of the scale plate.

[0007] Preferably, a first lifting rod and a second lifting rod are provided on the side of the placement platform. The first lifting rod and the second lifting rod are connected crosswise. A pivot pin is connected at the center of the first lifting rod and the second lifting rod. Rotating blocks are provided at both ends of the first lifting rod and the second lifting rod. The rotating blocks on the same side of the first lifting rod and the second lifting rod are respectively connected to the side of the base and the placement platform.

[0008] Preferably, the platform is provided with a slide rail at a position corresponding to the rotating block on the same side of the other end of the first and second lifting rods, the base is provided with a gear track at a position corresponding to the rotating block on the same side of the other end of the first and second lifting rods, a slider is provided on the end face of the rotating block at the other end of the second lifting rod, the slider is located inside the slide rail, and gear rods are provided at both ends of the rotating block at the other end of the first lifting rod, with one gear rod located inside the gear track.

[0009] Preferably, the lead screw has a handle at one end on the outside of the base.

[0010] Preferably, a pair of balance blocks are symmetrically arranged on the center line of the bottom surface of the base, and a pair of adjustment seats are symmetrically arranged on the bottom surface of the balance blocks. An adjustment rod is arranged at the center of the opposite side of the two adjustment seats, and the other end of the adjustment rod is connected to a vertical plate. A first fixing piece is arranged on the outer end of the adjustment rod on the vertical plate, and a rotating seat is arranged inside the bottom end of the vertical plate.

[0011] Preferably, a steering motor is provided on one side of the upright plate, one end of the steering motor passes through the upright plate and the rotating base, and the other end of the steering motor is provided with a second fixing plate, which is located on the opposite side of the two upright plates.

[0012] Preferably, the bottom surface of the rotary seat is provided with a support plate, and a friction layer is provided at the center of the top surface of the support plate.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides an auxiliary platform for rock longitudinal wave testing. By setting up a placement platform, the rock is placed on top of the platform, and the baffle on the placement platform is used to clamp and fix the rock. In conjunction with the clamping device, it can ensure that the longitudinal wave transducer and the center of the rock sample are on the same axis, avoid the influence of human factors on experimental errors, simplify the operation process, and improve experimental efficiency.

[0015] 2. This utility model provides an auxiliary platform for rock longitudinal wave testing. By setting a balance block, the adjustment seat on the balance block changes the angle between the base and the upright plate, so that the base always remains horizontal. Then, the steering motor drives the support plate to change the angle, so that the support plate always keeps in contact with the ground. It can be applied to different ground environments, thereby improving versatility. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of the auxiliary platform for rock longitudinal wave testing according to this utility model;

[0017] Figure 2 This is a bottom view of the auxiliary platform for rock longitudinal wave testing according to this utility model;

[0018] Figure 3 This is a rear view of the auxiliary platform for rock longitudinal wave testing according to this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 11. Fixing rod; 12. Sliding rod; 2. Clamping device; 21. Cylindrical slider; 22. Anti-slip rubber; 23. Fixing bolt; 3. Fixing nut; 31. Lead screw; 32. Handle; 33. Connecting block; 4. Placement platform; 41. Scale plate; 42. Baffle; 43. Slide groove; 5. First lifting rod; 51. Second lifting rod; 52. Shaft pin; 53. Rotating block; 54. Sliding block; 55. Gear rod; 56. Gear track; 57. Slide rail; 6. Balance block; 61. Adjusting seat; 62. Adjusting rod; 63. First fixing plate; 64. Vertical plate; 65. Rotary seat; 66. Support plate; 67. Friction layer; 68. Steering motor; 69. Second fixing plate. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0022] Please see Figures 1-3An auxiliary platform for longitudinal wave testing of rock includes a rectangular base 1. Fixing rods 11 are located at the four corners of the top surface of the base 1. Sliding rods 12 are connected to the center of the top of each fixing rod 11 on the longer side of the base 1. A pair of clamping devices 2 are symmetrically arranged above the base 1. Cylindrical sliders 21 are located at both ends of the clamping devices 2, and the cylindrical sliders 21 are slidably connected to the sliding rods 12. Anti-slip rubber 22 is installed inside the clamping devices 2. Fixing bolts 23 are located on both sides of the clamping devices 2. A connecting block 33 is located at the center of the bottom of the clamping devices 2. A fixing nut 3 is located at the center of the shorter side of the base 1. A lead screw 31 connects the fixing nut 3 to the connecting block 33. A placement platform 4 is located between the clamping devices 2. Located above base 1; base 1 is rectangular in shape to support the entire auxiliary platform, slide rod 12 supports clamping device 2 and ensures alignment of left and right transducers; clamping device 2 is cylindrical and used to fix longitudinal wave transducers. Each clamping device 2 consists of an upper clamping plate and a lower clamping plate. The upper and lower clamping plates are brought closer together by tightening fixing bolts 23, thereby clamping the longitudinal wave transducer. The inner sides of the upper and lower clamping plates are covered with anti-slip rubber 22 to prevent slippage between the longitudinal wave transducer and the clamping plates and to avoid wear on the surface of the longitudinal wave transducer. The bottom end of clamping device 2 is connected to connecting block 33. Clamping device 2 can slide left and right on slide rod 12 by fixing nut 3; fixing nut 3 is provided at the center of the short side of base 1. A connecting structure is provided at the lower end of clamping device 2. Connecting block 33 fixes lead screw 31 but does not restrict the rotation of lead screw 31. The lead screw 31 passes through the fixing nut 3, and the other end of the lead screw 31 is connected to the connecting block 33. The lead screw 31 can cooperate with the fixing nut 3 and the connecting block 33. When the lead screw 31 is rotated, the entire clamping device 2 can be moved along the slide bar 12. The placement platform 4 is located in the middle of the base 1 and is used to place the rock sample to be tested.

[0023] Please see Figures 1-3 The top surface of the placement platform 4 has a groove 43 at its center, which is parallel to the slide rod 12. A pair of baffles 42 are symmetrically arranged inside the groove 43. The other end of the baffles 42 is located above the base 1. A scale plate 41 is arranged on one side of the baffles 42 above the base 1. The top surface of the scale plate 41 is in contact with the top surface of the base 1, and one side of the baffles 42 is in contact with one side of the scale plate 41. The groove 43 and the baffles 42 in the middle of the placement platform 4 are used to fix the rock sample. The scale plate 41 on the surface of the placement platform 4, together with the baffles 42, can measure the size of the rock sample as the initial parameter for the longitudinal wave test, which greatly saves time.

[0024] Please see Figures 1-3The side of the placement platform 4 is provided with a first lifting rod 5 and a second lifting rod 51, which are cross-connected. A pivot pin 52 is connected at the center of the first lifting rod 5 and the second lifting rod 51. Rotating blocks 53 are provided at both ends of the first lifting rod 5 and the second lifting rod 51. The rotating blocks 53 on the same side of the first lifting rod 5 and the second lifting rod 51 are respectively connected to the side of the base 1 and the placement platform 4. By rotating the first lifting rod 5 and the second lifting rod 51 relative to each other on the pivot pin 52, the height of the placement platform 4 can be accurately adjusted so that the longitudinal wave transducers on both sides are on the same axis as the center of the rock sample. The rotation of the first lifting rod 5 and the second lifting rod 51 is not restricted.

[0025] Please see Figures 1-3 The placement platform 4 is equipped with a slide rail 57 at a position corresponding to the rotating block 53 on the same side of the other end of the first lifting rod 5 and the second lifting rod 51. The base 1 is equipped with a gear track 56 at a position corresponding to the rotating block 53 on the same side of the other end of the first lifting rod 5 and the second lifting rod 51. A slider 54 is provided on the end face of the rotating block 53 at the other end of the second lifting rod 51, and the slider 54 is located inside the slide rail 57. Gear rods 55 are provided at both ends of the rotating block 53 at the other end of the first lifting rod 5, and one side of the gear rod 55 is located inside the gear track 56. The gear rod 55 is equipped with... The gear's rod structure matches the gear track 56 on the base 1; the slide rail 57 is located on the side of the placement platform 4, and the slider 54 can slide along the inside of the slide rail 57; by driving the gear rod 55 to rotate, the gear rod 55 moves inside the gear track 56, changing the angle between the first lifting rod 5 and the second lifting rod 51, causing the first lifting rod 5 and the second lifting rod 51 to rotate relative to each other around the shaft pin 52, thereby changing the height of the placement platform 4. When the first lifting rod 5 and the second lifting rod 51 rotate relative to each other, the slider 54 on the second lifting rod 51 slides inside the slide rail 57.

[0026] Please see Figures 1-3 The lead screw 31 has a handle 32 at one end on the outside of the base 1; the fixed nut 3 has a handle 32 at one end. When the handle 32 is rotated to rotate the lead screw 31, the entire clamping device 2 can be moved along the slide bar 12.

[0027] Please see Figures 1-3A pair of balance blocks 6 are symmetrically arranged on the center line of the bottom surface of the base 1. A pair of adjusting seats 61 are symmetrically arranged on the bottom surface of the balance blocks 6. An adjusting rod 62 is arranged at the center of the opposite side of the two adjusting seats 61. The other end of the adjusting rod 62 is connected to the upright plate 64. A first fixing piece 63 is arranged on the outer end of the adjusting rod 62 on the upright plate 64. A rotating seat 65 is arranged inside the bottom end of the upright plate 64. The adjusting seats 61 are fixed to the bottom of the base 1 by the balance blocks 6. The adjusting rod 62 can rotate on the adjusting seats 61 to change the angle between the upright plate 64 and the base 1. One end of the adjusting rod 62 is fixed to the upright plate 64 by the first fixing piece 63, so that the adjusting rod 62 only drives the adjusting seats 61 to rotate. The rotating seat 65 is rotatably connected to the bottom of the upright plate 64.

[0028] Please see Figures 1-3 A steering motor 68 is provided on one side of the upright plate 64. One end of the steering motor 68 passes through the upright plate 64 and the rotating base 65, and the other end of the steering motor 68 is provided with a second fixing plate 69. The second fixing plate 69 is located on the opposite side of the two upright plates 64. By driving the steering motor 68 to rotate the rotating base 65, and fixing one end of the steering motor 68 to the upright plate 64 through the second fixing plate 69, the steering motor 68 only drives the rotating base 65 to rotate, thereby changing the angle between the rotating base 65 and the upright plate 64.

[0029] Please see Figures 1-3 The bottom surface of the swivel 65 is provided with a support plate 66, and the center of the top surface of the support plate 66 is provided with a friction layer 67. The support plate 66 supports the swivel 65, and in turn supports the base 1. The friction layer 67 increases the friction between the support plate 66 and the ground, which is more conducive to the stable support of the support plate 66.

[0030] During use, the support plate 66 is placed on the ground, and the steering motor 68 is driven to rotate the rotating seat 65, ensuring that the support plate 66 remains in close contact with the ground and applies pressure to both ends of the base 1. Under the action of the adjusting rod 62, the base 1 is kept horizontal. The fixing bolts 23 are loosened, the upper clamping plates of the transducer clamping devices 2 on both sides are removed, the two longitudinal wave transducers are placed in the lower clamping plate, the upper clamping plate is replaced, and the fixing bolts 23 are tightened to fix the longitudinal wave transducers in place by the transducer clamping devices 2. The rock sample to be tested is placed at the center of the rock sample placement platform 4, and the sliding baffle 42 is moved close to and clamped along the sliding groove 43 at the center of the rock sample placement platform 4 to fix the rock sample to be tested. The position between the baffle 42 and the scale plate 41 is used to accurately measure the size of the rock sample as the initial parameters for the longitudinal wave test. The gear rod 55 is rotated so that it moves along the tooth... The wheel track 56 rolls left and right, simultaneously coordinating with the first lifting rod 5, the second lifting rod 51, the axle pin 52, and the rotating block 53 to drive the slider 54 to move left and right along the slide rail 57, thereby adjusting the height of the rock sample placement platform 4 so that the center of the rock sample is on the same axis as the longitudinal wave transducers on both sides; Vaseline is applied to the bottom surface of the rock sample and the surface of the longitudinal wave transducers; the handles 32 on both sides are rotated to move the lead screw 31 along the fixing nut 3 towards the center, simultaneously driving the two transducer clamping devices 2 to move along the slide rod 12 towards the center and clamp them at both ends of the rock sample to be tested; the ultrasonic detector is connected to the longitudinal wave transducer, the rock sample size is input to measure the longitudinal wave velocity, and the longitudinal wave velocity of the rock is obtained; this ensures that the longitudinal wave transducer and the center of the rock sample are on the same axis, avoiding the influence of human factors on experimental errors, and also simplifies the operation process and improves experimental efficiency.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary platform for longitudinal wave testing of rock, comprising a base (1), the base (1) being rectangular, with fixing rods (11) provided at the four corners of the top surface of the base (1), and sliding rods (12) connected to the center of the top of the fixing rods (11) at both ends of the longer side of the base (1), characterized in that: A pair of clamping devices (2) are symmetrically arranged above the base (1). The two ends of the clamping devices (2) are provided with cylindrical sliders (21), and the cylindrical sliders (21) are slidably connected to the slide rod (12). The inside of the clamping devices (2) is provided with anti-slip rubber (22), and the two sides of the clamping devices (2) are provided with fixing bolts (23). A connecting block (33) is provided at the center of the bottom of the clamping devices (2), and a fixing nut (3) is provided at the center of the shorter side of the base (1). A screw rod (31) is connected between the fixing nut (3) and the connecting block (33). A placement platform (4) is provided between the clamping devices (2), and the placement platform (4) is located above the base (1).

2. The auxiliary platform for rock longitudinal wave testing according to claim 1, characterized in that: The top surface of the placement platform (4) is provided with a sliding groove (43), which is parallel to the sliding rod (12). A pair of baffles (42) are symmetrically arranged inside the sliding groove (43). The other end of the baffle (42) is located above the base (1). A scale plate (41) is provided on one side of the baffle (42) above the base (1). The top surface of the scale plate (41) is in contact with the top surface of the base (1), and one side of the baffle (42) is in contact with one side of the baffle (42) of the scale plate (41).

3. The auxiliary platform for rock longitudinal wave testing according to claim 2, characterized in that: The side of the placement platform (4) is provided with a first lifting rod (5) and a second lifting rod (51). The first lifting rod (5) and the second lifting rod (51) are connected in a cross manner. A pivot pin (52) is connected at the center of the first lifting rod (5) and the second lifting rod (51). Rotating blocks (53) are provided at both ends of the first lifting rod (5) and the second lifting rod (51). The rotating blocks (53) on the same side of the first lifting rod (5) and the second lifting rod (51) are respectively connected to the side of the base (1) and the placement platform (4).

4. The auxiliary platform for rock longitudinal wave testing according to claim 3, characterized in that: The placement platform (4) is provided with a slide rail (57) at a position corresponding to the rotating block (53) on the same side of the other end of the first lifting rod (5) and the second lifting rod (51). The base (1) is provided with a gear track (56) at a position corresponding to the rotating block (53) on the same side of the other end of the first lifting rod (5) and the second lifting rod (51). A slider (54) is provided on the end face of the rotating block (53) at the other end of the second lifting rod (51). The slider (54) is located inside the slide rail (57). Gear rods (55) are provided at both ends of the rotating block (53) at the other end of the first lifting rod (5). One side of the gear rod (55) is located inside the gear track (56).

5. The auxiliary platform for rock longitudinal wave testing according to claim 4, characterized in that: The lead screw (31) has a handle (32) at one end outside the base (1).

6. The auxiliary platform for rock longitudinal wave testing according to claim 5, characterized in that: A pair of balance blocks (6) are symmetrically arranged on the center line of the bottom surface of the base (1). A pair of adjustment seats (61) are symmetrically arranged on the bottom surface of the balance blocks (6). An adjustment rod (62) is arranged at the center of the opposite side of the two adjustment seats (61). The other end of the adjustment rod (62) is connected to a vertical plate (64). A first fixing piece (63) is arranged on the outer end of the adjustment rod (62) on the vertical plate (64). A rotating seat (65) is arranged inside the bottom end of the vertical plate (64).

7. The auxiliary platform for rock longitudinal wave testing according to claim 6, characterized in that: A steering motor (68) is provided on one side of the upright plate (64). One end of the steering motor (68) passes through the upright plate (64) and the rotating seat (65). The other end of the steering motor (68) is provided with a second fixing plate (69). The second fixing plate (69) is located on the opposite side of the two upright plates (64).

8. The auxiliary platform for rock longitudinal wave testing according to claim 7, characterized in that: The bottom surface of the rotating base (65) is provided with a support plate (66), and a friction layer (67) is provided at the center of the top surface of the support plate (66).

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