Rolling stone impact test device

Abstract

The invention provides a rolling stone impact test device, which relates to the technical field of geological disaster simulation tests, and comprises a support mechanism, a swing mechanism, a stone blocking mechanism, two groups of acceleration sensing mechanisms and two groups of opening parts, the supporting mechanism comprises a tower crane, a hoisting assembly and an impact ball arranged on the hoisting assembly in a hoisting mode. The swing mechanism comprises a supporting plate, a supporting frame and a traction assembly. The stone blocking mechanism comprises a stone blocking wall and a soil cushion layer; the two sets of acceleration sensing mechanisms are installed on the two sides of the impact ball, each acceleration sensing mechanism comprises an installation frame body and an acceleration sensor, and one side of each installation frame body is provided with a through opening and a blocking assembly used for blocking the through opening; the opening piece is located between the stone blocking mechanism and the swing mechanism, and when the impact ball collides with the stone blocking mechanism, the opening piece can drive the blocking assembly to move so as to open the through opening. After the first impact, the acceleration sensor is separated from the impact ball, so that the impact ball is prevented from repeatedly impacting the stone blocking wall after rebounding to influence the service life of the acceleration sensor.

Description

Technical Field

[0001] The invention relates to the technical field of geological disaster simulation tests, and in particular to a rolling stone impact test device. Background Art

[0002] The existing slope rolling stone impact test device is a device used to simulate the impact of rolling stones on slope protection structures or slope bodies. Its main purpose is to provide a scientific basis for the safety assessment, design optimization and research on protection measures of slope engineering. The device is generally composed of simulated rolling stones, a swinging mechanism, an impact target, a monitoring and measurement system, and a data recording and analysis system. The simulated rolling stones usually use spherical impact balls of different diameters. The swinging mechanism adjusts the release height, speed and direction of the impact ball to achieve the swinging movement of the impact ball and make it hit the impact target. The impact target is the direct action object of the impact ball. Usually, a stone retaining wall with a soil cushion layer is used. A pressure sensor is installed on the back of the stone retaining wall to record the impact force generated by the impact ball at the moment of impact. During the test, the device monitors the motion trajectory, speed, impact force of the simulated rolling stone, and the deformation and damage of the target structure through acceleration sensors and pressure sensors. The relevant data is processed by the data recording and analysis system to evaluate the performance of the protection structure and the impact of the impact ball.

[0003] The acceleration sensor is usually installed on the impact ball to detect the acceleration change of the impact ball during its swinging process in real time, and as the acceleration generated by the impact ball when it hits the impact target. Since the impact ball will rebound after hitting the stone wall and continue to impact the stone wall after rebounding, the impact force of such repeated impacts will often cause irreversible damage to the acceleration sensor during long-term testing, resulting in a significant impact on the detection stability and service life of the entire test device. Summary of the invention

[0004] The purpose of the present invention is to provide a rolling stone impact test device, which can separate the acceleration sensor from the impact ball after the impact ball hits the stone wall, thereby avoiding the impact on the service life of the acceleration sensor caused by repeated collisions between the impact ball and the stone wall after subsequent rebound.

[0005] The present invention is implemented by the following technical scheme: A rolling stone impact test device comprises: a supporting mechanism, the supporting mechanism comprises a tower crane, one end of the tower crane is provided with a hanging assembly, and the bottom of the hanging assembly is hung with an impact ball; A swing mechanism, the swing mechanism comprising a support plate, a support frame is provided on the support plate, and a pulling component for pulling the impact ball to a horizontal state is provided on the top of the support frame; A stone-blocking mechanism, the stone-blocking mechanism comprising a stone-blocking wall, a soil cushion layer being arranged on a side of the stone-blocking wall facing the swing mechanism; Two groups of acceleration sensor mechanisms, the two groups of acceleration sensor mechanisms are symmetrically arranged on both sides of the impact ball, the acceleration sensor mechanisms include a mounting frame and an acceleration sensor arranged in the mounting frame, and one side of the mounting frame is provided with a through hole for the acceleration sensor to move out and a blocking component for blocking the through hole; Two groups of opening members are provided, wherein the opening members are located between the stone blocking mechanism and the swinging mechanism, and a gap is left between the two groups of opening members for the impact ball to pass through. When the impact ball collides with the stone blocking mechanism, the opening members can drive the blocking assembly to move to open the passage.

[0006] Further, the blocking assembly includes a blocking block and an opening and closing member, the blocking block is slidably arranged in an installation frame, the blocking block includes a first support block and a second support block, the length direction of the first support block is consistent with the radial direction of the acceleration sensor, and the second support block is arranged on the side of the first support block facing the acceleration sensor; the opening and closing member includes an opening and closing gear, a rotating shaft and an opening and closing rod, the rotating shaft is rotatably connected in the installation frame, the opening and closing gear is coaxially connected to the rotating shaft, the opening and closing rod is radially arranged on the rotating shaft and extends outside the installation frame, and the first support block is provided with a rack meshing with the opening and closing gear on the side away from the acceleration sensor.

[0007] Furthermore, when the pulling assembly pulls the impact ball to the highest stroke position, the opening and closing rod is in a horizontal state; when the impact ball moves to the gap position between the two groups of opening parts, the opening and closing rod is in a vertical state and abuts against the opening parts; when the impact ball moves to collide with the stone blocking mechanism, the opening and closing rod drives the rotating shaft to rotate to drive the opening and closing gear to rotate.

[0008] Furthermore, a protrusion is provided at one end of the rotating shaft away from the opening and closing rod, and a torsion spring is provided on the outer sleeve of the rotating shaft. One end of the torsion spring is fixedly connected to the protrusion, and the other end is fixedly connected to the installation frame. When the torsion spring is in an original state, the first support block blocks the through opening, and the second support block abuts against the end face of the acceleration sensor.

[0009] Furthermore, storage mechanisms for storing acceleration sensors are provided on both sides of the stone blocking mechanism, and the storage mechanisms include a first slide rail, a support rod is provided on the first slide rail, a storage box is provided on the top of the support rod, and an opening is provided on a side of the storage box facing the swing mechanism. When the impact ball collides with the stone blocking mechanism, the installation frame moves into the storage box, and a flexible buffer pad is provided in the storage box.

[0010] Furthermore, the hoisting assembly includes a hoisting frame, a hoisting motor is arranged on the hoisting frame, a winding drum is coaxially connected to the output shaft of the hoisting motor, a steel rope is wound on the winding drum, a connecting ring is arranged at the end of the steel rope away from the winding drum, and a rope groove for the connecting ring to be inserted is circumferentially opened on the impact ball; an indicating mechanism is arranged at the bottom of the hoisting frame, and the indicating mechanism includes a bottom rod, a center column is arranged in the middle of the bottom rod, a rope cavity for the steel rope to pass through is opened on the center column, and indicating components are arranged on the bottom rod and on both sides of the center column.

[0011] Furthermore, the indicating assembly comprises a supporting block, a bottom of the supporting block is fixedly connected with an indicating rope, an end of the indicating rope away from the supporting block is provided with an indicating rod, and an end of the indicating rod away from the indicating rope is provided with an indicating block.

[0012] Furthermore, the support block is slidably arranged on the bottom rod, and the support block is provided with a fastening bolt for tightening against the bottom rod; the indicator rod is a telescopic rod, and the indicator rod includes an outer rod and an inner rod slidably connected to the outer rod, the outer rod is provided with a positioning pin, and the inner rod is provided with a plurality of positioning holes for inserting the positioning pins distributed along its length direction.

[0013] Furthermore, the support rod includes a first support rod and a second support rod, the bottom of the first support rod is provided with a first sliding seat and is slidably connected to the first sliding rail through the first sliding seat, the second support rod is slidably connected to the top of the first support rod along the length direction of the first support rod, and the first support rod is provided with a first tightening bolt for fixing the position of the second support rod.

[0014] Furthermore, the opening member includes a second slide rail, an opening plate is slidably arranged on the second slide rail, the opening plate includes a first support plate and a second support plate, a second slide seat is arranged at the bottom of the first support plate and is slidably connected to the second slide rail through the second slide seat, the second support plate is slidably connected to the top of the first support plate along the length direction of the first support plate, and a second tightening bolt for fixing the position of the second support plate is arranged on the first support plate.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. The present invention places the acceleration sensor in a mounting frame. Before the impact ball hits the stone wall, the blocking component limits the position of the acceleration sensor in the mounting frame. When the impact ball hits the stone wall, the blocking component opens the opening under the action of the opening member to move the acceleration sensor out of the mounting frame, thereby avoiding the repeated collisions between the impact ball and the stone wall after subsequent rebound, which affects the service life of the acceleration sensor.

[0016] 2. The present invention sets an indicating mechanism at the bottom of the hanging frame, and simulates the moving trajectory of the installation frame through the indicating mechanism before the test, so that the storage mechanism can be adjusted to an appropriate position in advance to ensure that the acceleration sensor can fall into the storage mechanism after being removed from the installation frame, thereby avoiding the acceleration sensor falling to the ground and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure when the swing mechanism of the present invention pulls the impact ball to the initial position of the swing motion; Figure 2 It is a schematic diagram of the overall structure when the impact ball of the present invention contacts the soil cushion layer; Figure 3 It is a schematic diagram of the structure of the hanging assembly, the impact ball and the pulling assembly of the present invention; Figure 4 It is a structural schematic diagram of the acceleration sensor mechanism on the impact ball when the swing mechanism of the present invention pulls the impact ball to the initial position of the swing motion; Figure 5 It is a schematic diagram of the structure of the blocking component and the acceleration sensor in the initial state of the present invention; Figure 6 It is a schematic diagram of the structure of the impact ball, the stone blocking mechanism, the opening member and the storage mechanism when the impact ball of the present invention contacts the soil cushion layer; Figure 7 It is a schematic diagram of the structure of the acceleration sensor mechanism on the impact ball when the impact ball of the present invention contacts the soil cushion layer; Figure 8 It is a schematic diagram of the structure of the blocking block, the opening and closing member and the acceleration sensor when the blocking assembly of the present invention opens the through port; Fig. 9 It is a schematic diagram of the installation structure of the indicating mechanism of the present invention; Fig.10 It is a structural schematic diagram of the indicator assembly of the present invention; Fig.11 It is a structural schematic diagram of the storage mechanism of the present invention; Figure numerals: 1-support mechanism, 11-tower crane, 12-lifting assembly, 121-lifting frame, 122-lifting motor, 123-winding drum, 124-steel rope, 125-connecting ring, 13-impact ball, 131-rope groove, 132-lifting ring, 2-swing mechanism, 21-support plate, 22-support frame, 221-hanging rope with hook, 23-pulling assembly, 231-winch, 232-hook, 3-stone blocking mechanism, 31-stone blocking wall, 32-soil cushion, 4-acceleration sensor mechanism, 41-installation frame, 411-through port, 42-acceleration sensor, 43-blocking assembly, 431-blocking block, 4311-first support block, 4312-second support block, 4313-rack, 432-opening and closing member, 4321-opening and closing gear, 4322-rotating Shaft, 4323-opening and closing rod, 4324-bump, 4325-torsion spring, 5-opening member, 51-second slide rail, 52-opening plate, 521-first support plate, 522-second support plate, 523-second slide seat, 524-second tightening bolt, 6-storage mechanism, 61-first slide rail, 62-support rod, 621-first support rod, 622-second support rod, 623-first slide seat, 624-first tightening bolt, 63-storage box, 631-opening, 632-flexible buffer pad, 7-indicating mechanism, 71-bottom rod, 72-center column, 73-indicating assembly, 731-support block, 7311-fastening bolt, 732-indicating rope, 733-indicating rod, 7331-outer rod, 7332-inner rod, 7333-locating pin, 734-indicating block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 here can be arranged and designed in various different configurations.

[0019] 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 claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example

[0021] The following reference Figure 1-Figure 11 As shown, combined with a specific embodiment, this embodiment provides a rolling stone impact test device, referring to Figure 1 , Figure 2As shown, it includes a supporting mechanism 1, a swinging mechanism 2, a stone blocking mechanism 3, two groups of acceleration sensor mechanisms 4 and two groups of opening members 5, the supporting mechanism 1 includes a tower crane 11, one end of the tower crane 11 is provided with a lifting assembly 12, and the bottom of the lifting assembly 12 is suspended with an impact ball 13; the swinging mechanism 2 includes a supporting plate 21, the supporting plate 21 is provided with a supporting frame 22, and the top of the supporting frame 22 is provided with a pulling assembly 23 for pulling the impact ball 13 to the initial position of the swinging motion; the stone blocking mechanism 3 includes a stone blocking wall 31, and a soil cushion layer 32 is provided on the side of the stone blocking wall 31 facing the swinging mechanism 2; the two groups of acceleration sensor mechanisms 4 are symmetrically arranged on both sides of the impact ball 13, and the acceleration sensor mechanism 4 includes a mounting frame 41 and an acceleration sensor 42 arranged in the mounting frame 41. Adjust the hoisting assembly 12 to hoist the impact ball 13 to a specified height, then use the pulling assembly 23 to pull the impact ball 13 to the initial position of the swinging motion, and then release the connection between the pulling assembly 23 and the impact ball 13, so that the impact ball 13 can swing freely from the specified height under the action of its own gravity. When the impact ball 13 hits the soil cushion layer 32, the pressure sensor on the stone retaining wall 31 records the impact force generated by the impact ball 13 at the moment of impact, and the acceleration sensor 42 simulates and monitors the motion trajectory and acceleration of the impact ball 13. Finally, the data is processed through the data recording and analysis system to evaluate the performance of the stone retaining wall 31 and the impact of the impact of the impact ball 13.

[0022] Reference Figure 3 As shown, the hoisting assembly 12 includes a hoisting frame 121, on which a hoisting motor 122 is fixedly mounted, and a winding drum 123 is coaxially connected to the output shaft of the hoisting motor 122, on which a steel rope 124 is wound, and a connecting ring 125 is arranged at one end of the steel rope 124 away from the winding drum 123, and a rope groove 131 for the connecting ring 125 to be inserted is provided in an annular direction on the impact ball 13. By starting the hoisting motor 122 to drive the winding drum 123 to rotate, the steel rope 124 can be wound onto the winding drum 123 or unwound from the winding drum 123, so that the height of the impact ball 13 can be changed according to the requirements of the test. The pulling assembly 23 includes a winch 231, which is fixedly mounted on the support frame 22, and a hook 232 is arranged at the output end of the winch 231, and a ring 132 for the hook 232 to be hung is provided on the impact ball 13. The hook 232 is hung on the lifting ring 132, so that the impact ball 13 can be pulled by the winch 231 until the impact ball 13 is pulled to the initial position of the swinging motion, that is, the position when the steel rope 124 of the lifting component 12 is in a horizontal state.

[0023] Reference Figure 4-Figure 8As shown, a through hole 411 for the acceleration sensor 42 to move out and a blocking assembly 43 for blocking the through hole 411 are provided on one side of the mounting frame 41; and a receiving mechanism 6 for receiving the acceleration sensor 42 is provided on both sides of the stone-blocking mechanism 3. The opening member 5 is located between the stone-blocking mechanism 3 and the swinging mechanism 2, and a gap is left between the two groups of opening members 5 for the impact ball 13 to pass through. When the impact ball 13 collides with the stone-blocking mechanism 3, the opening member 5 can drive the blocking assembly 43 to move to open the through hole 411, so that the acceleration sensor 42 can move out of the through hole 411 under the action of inertia. The receiving mechanism 6 plays a role of buffering and receiving after the acceleration sensor 42 is moved out, so as to prevent the acceleration sensor 42 from falling to the ground or colliding with the stone-blocking wall 31 and causing damage.

[0024] Reference Figure 5 As shown, the blocking assembly 43 includes a blocking block 431 and an opening and closing member 432. The blocking block 431 is slidably arranged in the installation frame 41. The blocking block 431 includes a first support block 4311 and a second support block 4312. The length direction of the first support block 4311 is consistent with the radial direction of the acceleration sensor 42, and the second support block 4312 is arranged on the side of the first support block 4311 facing the acceleration sensor 42; the opening and closing member 432 includes an opening and closing gear 4321, a rotating shaft 4322 and an opening and closing rod 4323. The rotating shaft 4322 is rotatably connected in the installation frame 41, the opening and closing gear 4321 is coaxially connected to the rotating shaft 4322, the opening and closing rod 4323 is radially arranged on the rotating shaft 4322 and extends outside the installation frame 41, and the side of the first support block 4311 away from the acceleration sensor 42 is provided with a rack 4313 meshing with the opening and closing gear 4321. When the pulling assembly 23 pulls the impact ball 13 to the highest stroke position, the opening and closing rod 4323 is in a horizontal state; when the impact ball 13 moves to the gap position between the two groups of opening parts 5, the opening and closing rod 4323 is in a vertical state and abuts against the opening parts 5; when the impact ball 13 moves to collide with the stone blocking mechanism 3, the opening and closing rod 4323 drives the rotating shaft 4322 to rotate to drive the opening and closing gear 4321 to rotate, and the rotation of the opening and closing gear 4321 drives the rotating shaft 4322 to rotate synchronously, thereby driving the first support block 4311 and the second support block 4312 to move through the rack 4313 to open the through opening 411 of the installation frame 41, so that the acceleration sensor 42 moves out of the installation frame 41 and enters the storage mechanism 6.

[0025] Reference Figure 5As shown, a protrusion 4324 is provided at one end of the rotating shaft 4322 away from the opening and closing rod 4323, and a torsion spring 4325 is provided on the outside of the rotating shaft 4322. One end of the torsion spring 4325 is fixedly connected to the protrusion 4324, and the other end is fixedly connected to the installation frame 41. When the torsion spring 4325 is in the original state, the first support block 4311 blocks the through opening 411, and the second support block 4312 abuts against the end face of the acceleration sensor 42 to prevent the first support block 4311 from moving during the movement of the impact ball 13 and opening the through opening 411, causing the acceleration sensor 42 to fall from the installation frame 41.

[0026] Reference Fig. 9 , Fig.10 As shown, the bottom of the hanging frame 121 is provided with an indicating mechanism 7, which includes a bottom rod 71, a center column 72 is provided in the middle of the bottom rod 71, a rope cavity for the steel rope 124 to pass through is opened on the center column 72, and an indicating assembly 73 is provided on the bottom rod 71 and on both sides of the center column 72. The indicating assembly 73 includes a supporting block 731, an indicating rope 732 is fixedly connected to the bottom of the supporting block 731, an indicating rod 733 is provided at one end of the indicating rope 732 away from the supporting block 731, and an indicating block 734 is provided at one end of the indicating rod 733 away from the indicating rope 732. A hanging rope 221 with a hook is provided at one end of the support frame 22 close to the lifting component 12. The hook on the hanging rope 221 is hung on the indicator block 734 and the indicator block 734 is kept in a horizontal state. Then the hook is released and the indicator block 734 swings along with the indicator rope 732 and the indicator rod 733. By observing whether the indicator block 734 can enter the storage mechanism 6, it can be judged whether the installation frame 41 and the acceleration sensor 42 can enter the storage mechanism 6 during the test, so that the storage part of the storage mechanism 6 can be adjusted to an appropriate position in advance to ensure that the acceleration sensor 42 can be stored.

[0027] Reference Fig.10 As shown, the support block 731 is slidably set on the bottom rod 71, and the support block 731 is provided with a fastening bolt 7311 for tightening on the bottom rod 71, so as to adjust the distance between the two groups of indicating components 73 according to the diameter of the impact ball 13, thereby improving the applicability of the overall structure; the indicating rod 733 is a telescopic rod, and the indicating rod 733 includes an outer rod 7331 and an inner rod 7332 slidably connected in the outer rod 7331, and a locating pin 7333 is provided on the outer rod 7331, and a plurality of locating holes for inserting the locating pin 7333 are distributed on the inner rod 7332 along its own length direction. By adjusting the insertion amount of the inner rod 7332 in the outer rod 7331 and inserting the locating pin 7333 into the locating hole at the corresponding position, the length of the indicating rod 733 can be adjusted, so as to adapt to different test heights.

[0028] Reference Fig.11As shown, the storage mechanism 6 includes a first slide rail 61, a support rod 62 is provided on the first slide rail 61, a storage box 63 is provided on the top of the support rod 62, and an opening 631 is provided on the side of the storage box 63 facing the swing mechanism 2. When the impact ball 13 collides with the stone blocking mechanism 3, the installation frame 41 moves into the storage box 63, and a flexible buffer pad 632 is provided in the storage box 63 to buffer the acceleration sensor 42 and further protect the acceleration sensor 42. The support rod 62 includes a first support rod 621 and a second support rod 622. The bottom of the first support rod 621 is provided with a first slide seat 623 and is slidably connected to the first slide rail 61 through the first slide seat 623. The second support rod 622 is slidably connected to the top of the first support rod 621 along the length direction of the first support rod 621. The first support rod 621 is provided with a first tightening bolt 624 for fixing the position of the second support rod 622. By changing the insertion depth of the second support rod 622 in the first support rod 621 and fixing the relative position of the second support rod 622 and the first support rod 621 by the first tightening bolt 624, the height of the support rod 62 can be adjusted so that the storage box 63 can adapt to different test heights.

[0029] Reference Figure 6 As shown, the opening member 5 includes a second slide rail 51, an opening plate 52 is slidably arranged on the second slide rail 51, and the opening plate 52 includes a first support plate 521 and a second support plate 522. A second slide seat 523 is arranged at the bottom of the first support plate 521 and is slidably connected to the second slide rail 51 through the second slide seat 523. The second support plate 522 is slidably connected to the top of the first support plate 521 along the length direction of the first support plate 521. The first support plate 521 is provided with a second tightening bolt 524 for fixing the position of the second support plate 522. By changing the insertion depth of the second support plate 522 in the first support plate 521 and fixing the relative position of the second support plate 522 and the first support plate 521 by the second tightening bolt 524, the height of the opening plate 52 can be adjusted to adapt to different test heights.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rolling stone impact test device, characterized in that: include: A support mechanism (1), the support mechanism (1) comprising a tower crane (11), one end of the tower crane (11) being provided with a lifting assembly (12), and a collision ball (13) being suspended at the bottom of the lifting assembly (12); A swing mechanism (2), the swing mechanism (2) comprising a support plate (21), a support frame (22) being arranged on the support plate (21), and a pulling component (23) for pulling the impact ball (13) to an initial position of the swinging motion being arranged on the top of the support frame (22); A stone-blocking mechanism (3), the stone-blocking mechanism (3) comprising a stone-blocking wall (31), a soil cushion layer (32) being provided on a side of the stone-blocking wall (31) facing the swing mechanism (2); Two groups of acceleration sensor mechanisms (4), the two groups of acceleration sensor mechanisms (4) are symmetrically arranged on both sides of the impact ball (13), the acceleration sensor mechanisms (4) include a mounting frame (41) and an acceleration sensor (42) arranged in the mounting frame (41), and one side of the mounting frame (41) is provided with a through opening (411) for the acceleration sensor (42) to be moved out and a blocking component (43) for blocking the through opening (411); Two groups of opening members (5) are provided, wherein the opening members (5) are located between the stone blocking mechanism (3) and the swing mechanism (2), and a gap is left between the two groups of opening members (5) for a collision ball (13) to pass through. When the collision ball (13) collides with the stone blocking mechanism (3), the opening members (5) can drive the blocking assembly (43) to move so as to open the passage (411).

2. The rolling stone impact test device according to claim 1, characterized in that: The blocking assembly (43) comprises a blocking block (431) and an opening and closing member (432); the blocking block (431) is slidably arranged in the installation frame (41); the blocking block (431) comprises a first support block (4311) and a second support block (4312); the length direction of the first support block (4311) is consistent with the radial direction of the acceleration sensor (42); the second support block (4312) is arranged on a side of the first support block (4311) facing the acceleration sensor (42); the opening and closing member (432) comprises a first support block (4311) and a second support block (4312); The invention comprises an opening and closing gear (4321), a rotating shaft (4322) and an opening and closing rod (4323); the rotating shaft (4322) is rotatably connected in the installation frame (41); the opening and closing gear (4321) is coaxially connected to the rotating shaft (4322); the opening and closing rod (4323) is radially arranged on the rotating shaft (4322) and extends outside the installation frame (41); and a rack (4313) meshing with the opening and closing gear (4321) is arranged on a side of the first support block (4311) away from the acceleration sensor (42).

3. The rolling stone impact test device according to claim 2, characterized in that: When the pulling assembly (23) pulls the impact ball (13) to the highest stroke position, the opening and closing rod (4323) is in a horizontal state; when the impact ball (13) moves to the gap position between the two groups of opening members (5), the opening and closing rod (4323) is in a vertical state and abuts against the opening members (5); when the impact ball (13) moves to collide with the stone blocking mechanism (3), the opening and closing rod (4323) drives the rotating shaft (4322) to rotate to drive the opening and closing gear (4321) to rotate.

4. The rolling stone impact test device according to claim 2, characterized in that: A protrusion (4324) is provided at one end of the rotating shaft (4322) away from the opening and closing rod (4323), and a torsion spring (4325) is sleeved on the outside of the rotating shaft (4322). One end of the torsion spring (4325) is fixedly connected to the protrusion (4324), and the other end is fixedly connected to the installation frame (41). When the torsion spring (4325) is in an original state, the first support block (4311) blocks the opening (411), and the second support block (4312) abuts against the end face of the acceleration sensor (42).

5. The rolling stone impact test device according to claim 1, characterized in that: Both sides of the stone blocking mechanism (3) are provided with a storage mechanism (6) for storing the acceleration sensor (42), the storage mechanism (6) comprises a first slide rail (61), a support rod (62) is provided on the first slide rail (61), a storage box (63) is provided on the top of the support rod (62), an opening (631) is provided on the side of the storage box (63) facing the swing mechanism (2), when the impact ball (13) collides with the stone blocking mechanism (3), the installation frame (41) moves into the storage box (63), and a flexible buffer pad (632) is provided in the storage box (63).

6. The rolling stone impact test device according to claim 1, characterized in that: The hoisting assembly (12) comprises a hoisting frame (121), on which a hoisting motor (122) is arranged, on which an output shaft of the hoisting motor (122) is coaxially connected a winding drum (123), on which a steel rope (124) is wound, a connecting ring (125) is arranged at one end of the steel rope (124) away from the winding drum (123), and a rope groove (131) for the connecting ring (125) to be inserted is provided in an annular direction on the impact ball (13); an indicating mechanism (7) is provided at the bottom of the hoisting frame (121), and the indicating mechanism (7) comprises a bottom rod (71), a central column (72) is provided in the middle of the bottom rod (71), a rope cavity for the steel rope (124) to pass through is provided on the central column (72), and indicating assemblies (73) are provided on the bottom rod (71) and on both sides of the central column (72).

7. The rolling stone impact test device according to claim 6, characterized in that: The indicating assembly (73) comprises a supporting block (731), the bottom of the supporting block (731) is fixedly connected with an indicating rope (732), one end of the indicating rope (732) away from the supporting block (731) is provided with an indicating rod (733), and one end of the indicating rod (733) away from the indicating rope (732) is provided with an indicating block (734).

8. The rolling stone impact test device according to claim 7, characterized in that: The support block (731) is slidably arranged on the bottom rod (71), and a fastening bolt (7311) for pressing against the bottom rod (71) is arranged on the support block (731); the indicator rod (733) is a telescopic rod, and the indicator rod (733) comprises an outer rod (7331) and an inner rod (7332) slidably connected to the outer rod (7331), and a positioning pin (7333) is arranged on the outer rod (7331), and a plurality of positioning holes for inserting the positioning pin (7333) are distributed on the inner rod (7332) along its length direction.

9. The rolling stone impact test device according to claim 5, characterized in that: The support rod (62) comprises a first support rod (621) and a second support rod (622); a first slide seat (623) is provided at the bottom of the first support rod (621) and is slidably connected to the first slide rail (61) via the first slide seat (623); the second support rod (622) is slidably connected to the top end of the first support rod (621) along the length direction of the first support rod (621); and a first tightening bolt (624) for fixing the position of the second support rod (622) is provided on the first support rod (621).

10. The rolling stone impact test device according to claim 1 or 9, characterized in that: The opening member (5) comprises a second slide rail (51), an opening plate (52) is slidably arranged on the second slide rail (51), the opening plate (52) comprises a first support plate (521) and a second support plate (522), a second slide seat (523) is arranged at the bottom of the first support plate (521) and is slidably connected to the second slide rail (51) through the second slide seat (523), the second support plate (522) is slidably connected to the top of the first support plate (521) along the length direction of the first support plate (521), and a second tightening bolt (524) for fixing the position of the second support plate (522) is arranged on the first support plate (521).

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