Blasting vibration protection device

Abstract

The utility model relates to the field of blasting construction protection, in particular to a blasting vibration protection device. At present, a mode of injecting foam concrete or plugging a metal corrugated pipe is mostly adopted as a vibration protection measure in a damping hole, the repeated utilization rate of the foam concrete is not high, and after the metal corrugated pipe is subjected to vibration waves once, the elastic property of the metal corrugated pipe is greatly damaged, repeated use is not facilitated, and the durability is not high. A blasting vibration protection device comprises a center sleeve, a buckle cylinder is fixedly connected to one side of the center sleeve, and four clamping grooves are formed in the buckle cylinder and can be connected with an external mechanical arm in a clamped mode. The external oil pressure system is used for setting pressure on oil in the four injection pressure channels, so that stress borne by the four wall attaching plates is restrained, the stress of blasting explosives on more peripheral soil is weakened, and the effect of weakening soil vibration is achieved.

Description

Technical Field

[0001] This invention relates to the field of blasting construction protection, and more particularly to a blasting vibration protection device. Background Technology

[0002] In various engineering construction activities, blasting operations are widely used as an efficient means of rock breaking and demolition in fields such as mining, tunnel excavation, demolition of old urban buildings, and road construction. However, the blasting process inevitably generates strong vibrations, which propagate to the surrounding medium in the form of elastic waves, posing numerous challenges to the surrounding environment, buildings, and personnel safety.

[0003] Currently, traditional blasting vibration protection technologies have significant limitations. Vibration damping holes are a common protective measure, involving drilling several holes around the blasting area and injecting foam concrete or inserting metal corrugated pipes to block and suppress the propagation of vibration waves. However, these methods rely on disposable consumables. Foam concrete requires cleaning after one use and cannot be recycled for vibration suppression, resulting in low reuse rates. Furthermore, the elastic properties of metal corrugated pipes are greatly damaged after a single vibration wave, making them unsuitable for repeated use and resulting in poor durability. Summary of the Invention

[0004] In order to overcome the shortcomings of foamed concrete or corrugated metal pipes having low reusability and thus poor durability, this invention provides a blasting vibration protection device that is reusable, highly durable, and can effectively protect against soil vibration at the blasting point.

[0005] The technical solution of the present invention is: a blasting vibration protection device, comprising a central sleeve, a wall-adhering component, a cross-arm mechanism, and a hydraulic buffer mechanism. The central sleeve is disposed within a vibration-damping hole, the hydraulic buffer mechanism is axially disposed inside the central sleeve, the wall-adhering component is located outside the central sleeve for adhering to the wall of the vibration-damping hole, one end of the cross-arm mechanism passes through the central sleeve and is hinged to the telescopic end of the hydraulic buffer mechanism inside it, and the other end is slidably hinged to the wall-adhering component. The cross-arm mechanism converts the relative displacement energy between the wall-adhering component and the central sleeve into the hydraulic compression energy of the hydraulic buffer mechanism.

[0006] The crossarm mechanism includes a central rod and swing rods. A swing groove is provided on the central sleeve, and the two swing rods are hinged to the swing groove through the central rod.

[0007] The wall-mounting component includes a support plate and a wall-mounting plate. The wall-mounting plate is fixedly connected to one side of the support plate and fits against the wall of the shock-absorbing hole. A strip groove is opened on the support plate. The two swing rods are slidably hinged to the strip groove of the support plate at one end located outside the central sleeve.

[0008] The hydraulic buffer mechanism includes an inlet pipe, a connector, and a telescopic end. The inlet pipe is axially located inside the central sleeve, and the connector is fixed to the inlet pipe. The inlet pipe, connector, and telescopic end are connected in sequence.

[0009] The telescopic end of the hydraulic buffer mechanism includes a moving block, an extrusion head, a curved hydraulic channel, and an injection channel. The injection channel is connected to the connector. One end of the curved hydraulic channel is connected to the injection channel, and the other end is laterally slidably connected to the extrusion head. One end of the extrusion head is connected to the moving block.

[0010] It also includes a buffer and a buffer ball. The buffer is disposed on the central sleeve and is used to buffer the support plate. The buffer includes a ring sleeve and a buffer ring pad. The ring sleeve is rotatably connected to the sliding groove on the central sleeve. A groove is opened on one side of the ring sleeve so that the buffer ring pad can be fitted in. The buffer ball is fixed on the support plate and is in the same cross-sectional plane as the buffer ring pad.

[0011] It also includes a buckle sleeve, the buckle cylinder being fixedly connected to one side of the central sleeve, and the buckle cylinder having four slots for engaging with an external robotic arm.

[0012] It also includes a reciprocating component, which includes a pull rod and a connecting rod. The pull rod is slidably connected to the central sleeve, and a connecting rod is hinged between the pull rod and the adjacent swing rod. One side of the ring sleeve has a toothed groove, and the pull rod is inserted into the toothed groove of the ring sleeve.

[0013] Each ring has a toothed groove on one side, each section having an N-shaped structure. The N-shaped toothed groove allows the crossarm mechanism to drive the buffer to rotate only when the crossarm is in the open state, through the reciprocating component.

[0014] The beneficial effects of this invention are: 1. The oil is transmitted to the curved hydraulic channel and the injection channel through the swing rod, the moving block, the extrusion head, and the pressure set by the external hydraulic system on the oil in the four injection channels, thereby suppressing the stress on the four wall plates, thereby reducing the stress of the explosive on the outer soil and achieving the effect of weakening soil vibration.

[0015] 2. Due to the different orientations of the four wall plates closest to the explosion center, the stress on the four wall plates is also different. When the oil in the curved hydraulic channel flows to the injection channel, it will be compensated first, and then the pressure threshold set by the external hydraulic system for the oil in the injection channel will be exceeded, and finally the pressure will be released.

[0016] 3. The buffer ball contacts the buffer ring pad, and the impact force of the buffer ball is dissipated by the buffer ring pad, which further reduces the centripetal force between the wall plate and the buffer ball, and also reduces the collision between the whole device, thus improving the durability of the entire device.

[0017] 4. By rotating the buffer ring pad at a certain angle, the contact point between the buffer ring pad and the buffer ball is different each time the device is used, so that the buffer ring pad can maintain the best buffering performance to dissipate the centripetal force of the buffer ball each time. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the central sleeve, snap-fit ​​sleeve, liquid inlet pipe, and wall-mounted plate of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the central sleeve, snap-fit ​​sleeve, and some of the supporting components of the present invention.

[0020] Figure 3 This is a cross-sectional three-dimensional structural diagram of the central sleeve of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the support and buffer components of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the central sleeve, inlet pipe, and connector of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the pull rod and ring sleeve of the present invention.

[0024] The markings in the attached diagram are as follows: 1: center sleeve, 2: snap-fit ​​sleeve, 3: liquid inlet pipe, 4: connector, 51: center rod, 52: swing rod, 53: support plate, 54: wall plate, 55: curved hydraulic channel, 551: moving block, 56: extrusion head, 57: injection channel, 61: pull rod, 62: connecting rod, 63: ring sleeve, 64: buffer ring pad, 65: buffer ball. Detailed Implementation

[0025] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0026] Example 1: As Figures 1-5As shown, a blasting vibration protection device includes a central sleeve 1, a wall-mounted component, a cross-arm mechanism, and a hydraulic buffer mechanism. The central sleeve 1 is disposed within a vibration damping hole. The wall-mounted component includes a support plate 53 and a wall-mounted plate 54 connected together. One end of the cross-arm mechanism passes through the central sleeve 1 and is hinged to the telescopic end of the hydraulic buffer mechanism inside it. The other end is slidably hinged to the wall-mounted component. The cross-arm mechanism converts the lateral force on the support plate 53 and the wall-mounted plate 54 into an axial force on the hydraulic buffer mechanism through the oil in several curved hydraulic channels 55 and injection channels 57 in a cross-opening and closing manner. When the wall-mounted plate 54 is subjected to a lateral force, the closing degree of the cross-arm mechanism is synchronized with the flow of oil in several curved hydraulic channels 55 and injection channels 61, and the oil flow direction is away from the cross-arm mechanism.

[0027] In actual use, since the lateral force of soil vibration is all-round, the crossarm mechanism includes a central rod 51 and swing rods 52. The central sleeve 1 has eight swing grooves, and a central rod 51 is welded to each swing groove of the central sleeve 1. Two swing rods 52 are rotatably connected to each central rod 51. There are eight sets of swing rods 52. The eight sets of swing rods 52 can more stably bear the lateral force during soil vibration. The two swing rods 52 in each set are slidably connected to the end away from the central sleeve 1 by a support plate 53. Each support plate 53 has a strip groove. Each swing rod 52 is slidably connected to the strip groove on the support plate 53. Each support plate 53 is fixedly connected to the side away from the central sleeve 1 by a wall plate 54. The components of the crossarm mechanism, the central sleeve 1, the support plate 53 and the wall plate 54 are all made of high-strength alloy steel.

[0028] In actual use, in order to ensure sufficient axial damping to counteract the lateral force of the crossarm mechanism, the center sleeve 1 has sixteen curved hydraulic channels 55 and four injection channels 61. Each curved hydraulic channel 55 has a short end and a long end at both ends. The long ends of the sixteen curved hydraulic channels 55 are divided into four groups and connected to the four injection channels 61 respectively.

[0029] The hydraulic buffer mechanism includes an inlet pipe 3, a connector 4, a moving block 551, and a squeezing head 56. There are four inlet pipes 3, all of which are located inside the central sleeve 1. Each of the four inlet pipes 3 is fixed and connected to a connector 4. The central sleeve 1 has eight stepped grooves inside. Each stepped groove is slidably connected to a moving block 551 on both sides. Each moving block 551 has a slot. The moving groove of each moving block 551 is connected to the end of a swing rod 52 away from the support plate 53. Each moving block 551 is welded with a squeezing head 56. The end of each squeezing head 56 away from the moving block 551 is located inside the short end of the curved hydraulic channel 55.

[0030] To facilitate the insertion or removal of this device from the shock-absorbing hole during actual use, a snap-fit ​​sleeve 2 is also included. The snap-fit ​​sleeve 2 is fixedly connected to one side of the central sleeve 1, and the snap-fit ​​sleeve 2 has four slots that can be snapped into the external robotic arm.

[0031] When vibration protection measures are needed for the damping holes around the blast point, the staff inserts the device into the external robotic arm. Specifically, it is engaged with the external robotic arm through the four slots on the snap-fit ​​cylinder 22. At the same time, the hydraulic pipes in the external system are connected to the four liquid inlet pipes 3. The external hydraulic system pushes the oil in the injection channel 57 through the external hydraulic pipes, the four liquid inlet pipes 3, and the four connectors 4. The oil in each injection channel 57 flows to the four curved hydraulic channels 55, simultaneously pushing the extrusion head 56 and the moving block 551 downward. The downward movement of each moving block 551 drives the swing rod 52 to revolve around the central rod 51. The system oscillates at a point, with each oscillating rod 52 sliding against the slot of each moving block 551 during its oscillation. Simultaneously, the eight oscillating rods 52 drive the support plate 53 and the wall-mounted plate 54 outwards, causing the wall-mounted plate 54 to fit against the inner wall of the shock-absorbing hole. At the same time, the external hydraulic system maintains pressure on the oil in the injection channel 57 at a set counter-pressure threshold. When the explosive in the blasting point detonates, generating a stress wave, this stress wave is transmitted through the surrounding soil to the four wall-mounted plates 54. The stress on the four wall-mounted plates 54 is transmitted through the oscillating rods 52, moving blocks 551, and extrusion heads 56 to the curved hydraulic channel 55 and the injection channel 57. In the oil system, the external hydraulic system sets the pressure on the oil in the four injection channels 57, thereby suppressing the stress on the four wall plates 54, and thus reducing the stress of the explosive on the surrounding soil, achieving the effect of weakening soil vibration. When the stress on the bonding arm exceeds the counter-pressure threshold set by the external hydraulic system for the oil in the injection channels 57, the external hydraulic system depressurizes and no longer applies pressure to the oil in the injection channels 57. The stress on the four wall plates 54 will simultaneously drive the eight support plates 53 to move towards the central sleeve 1. Under the action of the central rod 51 and the limiting action of the short end of the curved hydraulic channel 55 on the extrusion head 56, Each set of swing rods 52 swings, causing one end of the swing rod 52 located inside the central sleeve 1 to drive the moving block 551 and the extrusion head 56 to move upward along the short end of the curved hydraulic channel 55. The extrusion head 56 pushes the oil in the curved hydraulic channel 55 to flow into the injection channel 57. Due to the different positions of the four wall plates 54 closest to the explosion center point, the stress on the four wall plates 54 is also different. When the oil in the curved hydraulic channel 55 flows into the injection channel 57, it will be compensated first, and then the external hydraulic system will break through the oil valve in the injection channel 57. Finally, after the explosion is completed, the external robotic arm pulls the entire device out of the shock absorption hole.

[0032] Example 2: Based on Example 1, such as Figure 4 and Figure 6 As shown, in order to achieve optimal cushioning performance to offset the contact between the crossarm mechanism and the central sleeve 1 during each use and improve stability, a buffer element is also included. The buffer element is disposed on the central sleeve 1 and is used to cushion the support plate 53. The buffer element includes a pull rod 61, which is slidably connected inside the central sleeve 1. Each pull rod 61 is hinged to its adjacent swing rod 52 by a connecting rod 62. The surface of the central sleeve 1 has four sliding grooves, and the two outermost sliding grooves of the central sleeve 1 are rotatably connected. Each ring 63 is connected to a toothed groove on one side. Each section of the toothed groove on one side of each ring 63 has an N-shaped structure. The N-shaped structure of the ring 63 can pull the pull rod 61 to squeeze the inclined surface of the toothed groove of the N-shaped structure of the ring 63 when the swing rod 52 is opened, thereby completing the unidirectional rotation of the ring 63. The other side of each ring 63 has a groove into which a buffer ring pad 64 can be inserted. A buffer ball 65 is fixedly connected to each support plate 53. The buffer ball 65 is located at a position that is far away from each other in the same group of support plates 53.

[0033] When each set of swing rods 52 swings towards the central sleeve 1 at one end near the wall plate 54, and the eight support plates 53 drive the buffer balls 65 to move towards the central sleeve 1, under the limiting action of the central sleeve 1 on the pull rod 61, the swing rod 52 pushes the pull rod 61 towards the buffer ring pad 64 through the connecting rod 62. The pull rod 61 moves on the toothed groove of the ring 63, and the buffer ball 65 contacts the buffer ring pad 64. The impact force of the buffer ball 65 on the buffer ring pad 64 is dissipated by the buffer ring pad 64, further reducing the centripetal force of the wall plate 54 and the buffer ball 65, and also reducing the impact force between the entire device. To improve the durability of the entire device, when the device is used again, each set of swing rods 52 is opened and pulled by the hinged connecting rod 62 to reset the pull rod 61. Under the special structure of the toothed groove of the ring sleeve 63, the pull rod 61 pushes the ring sleeve 63 to drive the buffer ring pad 64 to rotate a certain angle along the sliding groove of the central sleeve 1. By rotating the buffer ring pad 64 by a certain angle, the contact point between the buffer ring pad 64 and the buffer ball 65 is different each time the device is used, so that the buffer ring pad 64 can maintain the best buffering performance to dissipate the centripetal force of the buffer ball 65 each time.

[0034] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made in accordance with the content of the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A blasting vibration protection device, characterized by: The device includes a central sleeve (1), a wall-mounted component, a cross-arm mechanism, and a hydraulic buffer mechanism. The central sleeve (1) is disposed inside the damping hole. The hydraulic buffer mechanism is disposed axially inside the central sleeve (1). The wall-mounted component is located outside the central sleeve (1) and is used to fit against the wall of the damping hole. One end of the cross-arm mechanism passes through the central sleeve (1) and is hinged to the telescopic end of the hydraulic buffer mechanism inside it. The other end is slidably hinged to the wall-mounted component. The cross-arm mechanism converts the relative displacement energy between the wall-mounted component and the central sleeve (1) into the hydraulic compression energy of the hydraulic buffer mechanism.

2. A blasting vibration protection device according to claim 1, characterized in that: The crossarm mechanism includes a central rod (51) and a swing rod (52). The central sleeve (1) has a swing groove, and the two swing rods (52) are hinged in the swing groove through the central rod (51).

3. A blasting vibration protection device according to claim 2, characterized in that: The wall-mounted component includes a support plate (53) and a wall-mounted plate (54). The support plate (53) is fixedly connected to the wall-mounted plate (54) which fits against the wall of the shock-absorbing hole. The support plate (53) has a strip groove. The two swing rods (52) are slidably hinged to the strip groove of the support plate (53) at one end outside the central sleeve (1).

4. The blasting vibration protection device according to claim 1, characterized in that: The hydraulic buffer mechanism includes an inlet pipe (3), a connector (4), and a telescopic end. The inlet pipe (3) is axially located inside the central sleeve (1), and the connector (4) is fixed on the inlet pipe (3). The inlet pipe (3), connector (4), and telescopic end are connected in sequence.

5. A blasting vibration protection device according to claim 4, characterised in that: The telescopic end of the hydraulic buffer mechanism includes a moving block (551), an extrusion head (56), a curved hydraulic channel (55), and an injection channel (57). The injection channel (57) is connected to the connector (4). One end of the curved hydraulic channel (55) is connected to the injection channel (57), and the other end is laterally slidably connected to the extrusion head (56). One end of the extrusion head (56) is connected to the moving block (551).

6. A blasting vibration protection device according to claim 3, characterized in that: It also includes a buffer and a buffer ball (65). The buffer is disposed on the central sleeve (1) and is used to buffer the support plate (53). The buffer includes a ring sleeve (63) and a buffer ring pad (64). The ring sleeve (63) is rotatably connected to the central sleeve (1). A groove is opened on one side of the ring sleeve (63) so that the buffer ring pad (64) can be fitted in. The buffer ball (65) is fixed on the support plate (53) and is in the same cross-sectional plane as the buffer ring pad (64).

7. The blasting vibration protection device according to claim 1, characterized in that: It also includes a snap-fit ​​cylinder (2), which is fixedly connected to one side of the central sleeve (1). The snap-fit ​​cylinder (2) has four slots that can be snapped into an external robotic arm.

8. A blasting vibration protection device according to claim 6, characterized in that: It also includes a reciprocating component, which includes a pull rod (61) and a connecting rod (62). The pull rod (61) is slidably connected to the central sleeve (1). The pull rod (61) is hinged to the adjacent swing rod (52) by the connecting rod (62). One side of the ring sleeve (63) is provided with a toothed groove, and the pull rod (61) is inserted into the toothed groove of the ring sleeve (63).

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