Foundation pit rock layer blasting protection facility supporting structure

Abstract

The application relates to the technical field of blasting protection, in particular to a foundation pit rock layer blasting protection facility supporting structure, which comprises two supporting rods and a protection net fixedly connected between the supporting rods, a connecting plate is rotationally connected to the lower edge of the front end of each of the two supporting rods, a stabilizing mechanism is arranged on the inner wall of each of the two connecting plates, and a speed-reducing mechanism is connected to the front end of the two connecting plates, when the pit rock layer is blasted, the kinetic energy of the large boulders rolling down the mountain slope can be reduced and the rolling speed can be reduced before the boulders contact the protection net, the supporting structure is suitable for mountain slopes with different angles, the impact force of the large boulders on the protection net is reduced, the protection net is prevented from being damaged, the safety coefficient is higher, the protection net is not prone to serious deformation, and the subsequent rework of the protection net is avoided, time and effort are saved, and the speed-reducing mechanism of the stabilizing mechanism for reducing the kinetic energy and speed of the large boulders when rolling down can be stabilized on mountain slopes with different angles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blasting protection, in particular to a foundation pit rock layer blasting protection facility supporting structure. BACKGROUND

[0002] Rock pit blasting is a common quarrying or building blasting operation. Blasting can quickly break up large rocks, improving the efficiency of quarrying or excavation.

[0003] In order to ensure the safety of the blasting process, a protective net is usually established around the blasting area when rock blasting is carried out. This is mainly to prevent dangerous objects such as flying rocks and rolling stones from blasting into nearby residential areas or highways, thereby protecting people's safety. These protective nets can intercept and slow down flying objects, reducing the risk of injury to the surrounding environment and personnel.

[0004] During the process of rock pit blasting, many rocks will roll down the mountain slope. For small rocks, the impact force on the protective net when they hit the protective net will be small, and even some small rocks will stay on the mountain slope. For large rocks, due to the effect of gravitational acceleration, they have high kinetic energy and can cause large impact forces on the protective net, which can easily damage the protective net and pose a safety hazard. Even if the protective net intercepts large rocks, the protective net will be severely deformed and will affect its next use. The weaving of the protective net requires the interlacing of iron wires, which is time-consuming and labor-intensive. Therefore, we propose a foundation pit rock layer blasting protection facility supporting structure. SUMMARY

[0005] The purpose of the present application is to provide a foundation pit rock layer blasting protection facility supporting structure to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a foundation pit rock layer blasting protection facility supporting structure, comprising two support rods and a protective net fixedly connected between the support rods, a connecting plate is rotatably connected to the lower edge of the front end of each of the two support rods, a stable mechanism is arranged on the inner wall of each of the two connecting plates, and a speed reduction mechanism is connected to the front end of each of the two connecting plates.

[0007] The speed reduction mechanism comprises a rectangular tube fixedly connected to the front end of each of the two connecting plates, a connecting rod is slidably inserted into each of the two rectangular tubes, a second spring is fixedly connected between the rear end of each of the two connecting rods and the front end of each of the two connecting plates, an inclined stone blocking plate is rotatably connected to the front end of each of the two connecting rods, a buffer mechanism and a limiting piece are arranged between the stone blocking plate and each of the two connecting rods, a plurality of speed reduction cylinder shells are linearly arrayed and fixedly connected to the outer surface of the stone blocking plate, and a support assembly is arranged in each of the plurality of speed reduction cylinder shells.

[0008] Preferably, the stabilizing mechanism comprises a ground insertion bolt, the ground insertion bolt is screwed through the inner wall of the connecting plate, and a cylindrical groove is formed in the inner wall of the ground insertion bolt, a threaded column is rotatably connected to the inner bottom of the cylindrical groove, the top end of the threaded column movably penetrates the hexagonal part of the ground insertion bolt, and the top end of the threaded column is fixedly connected with a rotating column, and horizontal and inclined anti-disengagement components are respectively arranged between the outer wall of the threaded column and the inner wall of the ground insertion bolt.

[0009] Preferably, the horizontal anti-disengagement component comprises a plurality of connecting rings, the plurality of connecting rings are sequentially screwed on the outer wall of the threaded column from top to bottom, a group of splicing rods are rotatably connected to the outer wall of each connecting ring, the number of each group of splicing rods is three, an anti-disengagement plate one is rotatably connected to the end of each of the three splicing rods away from the connecting ring, one end of each of the three anti-disengagement plates one is movably inserted into the inner wall of the ground insertion bolt, and the other end of each of the three anti-disengagement plates one is attached to the outer wall of the threaded column, and the three anti-disengagement plates one are horizontally arranged.

[0010] Preferably, the inclined anti-disengagement component comprises a Y-shaped plate, the Y-shaped plate is screwed on the outer wall of the threaded column near the lower edge, a plurality of T-shaped grooves are formed in the lower end of the Y-shaped plate around the central annular array, a T-shaped block is movably attached to the inner wall of each of the plurality of T-shaped grooves, a concave block is fixedly connected to the lower end of each of the plurality of T-shaped blocks, an anti-disengagement plate two is rotatably connected to the inner wall of each of the plurality of concave blocks, each of the plurality of anti-disengagement plates two is movably inserted into the bottom inner wall of the ground insertion bolt, and each of the plurality of anti-disengagement plates two is arranged obliquely.

[0011] Preferably, the buffer mechanism comprises a concave groove, the concave groove is formed in the upper end of the connecting rod, and a guide column is fixedly connected to the inner wall of the concave groove, a sliding block is movably sleeved on the outer wall of the front edge of the guide column, the lower end of the sliding block is attached to the bottom end of the concave groove, a first spring is fixedly connected between the rear end of the sliding block and the rear end of the concave groove, the first spring is movably sleeved on the outer wall of the guide column, and a rotating rod is rotatably connected between the upper end of the sliding block and the outer wall of the blocking stone plate.

[0012] Preferably, the limiting piece comprises a limiting block, the limiting block is fixedly connected to the upper end of the connecting rod, and the limiting block is close to the blocking stone plate, and the limiting block and the connecting rod are integrally formed.

[0013] Preferably, the support assembly comprises a plurality of fixed plates, the plurality of fixed plates are fixedly connected in linear array at the inner bottom end of the retardation column shell, and the outer walls of the plurality of fixed plates are symmetrically fixedly connected with spacing plates, and the outer walls of the plurality of fixed plates are fixedly connected with buffer springs one, buffer springs two and buffer springs three, the ends of the two spacing plates away from the fixed plates are fixedly connected on the inner wall of the retardation column shell, the buffer spring one is located between the two adjacent spacing plates, and the buffer spring two and the buffer spring three are respectively located between the two spacing plates and the inner wall of the retardation column shell.

[0014] Preferably, the retardation column shell is made of polystyrene material, and the stone blocking plate is made of wear-resistant steel material.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1. Through the cooperation of the support rod, the protective net, the retardation mechanism, the connecting plate, the rectangular pipe, the connecting rod, the second spring, the stone blocking plate, the buffer mechanism, the limiting piece, the retardation column shell and the support assembly, after the present support structure is established around the blasting area, when the pit rock layer is blasted, the kinetic energy of the large boulders rolling along the mountain slope can be reduced before the boulders contact the protective net, and the rolling speed is reduced accordingly, and the present support structure is suitable for different angles of mountain slopes, so that the impact force of the large boulders on the protective net is reduced, damage to the protective net is avoided, the safety factor is higher, and the protective net is not easy to be severely deformed, and the subsequent rework of the protective net is avoided.

[0017] 2. Through the cooperation of the stabilizing mechanism, the horizontal anti-disengagement assembly and the oblique anti-disengagement assembly, the retardation mechanism for reducing the kinetic energy and speed of the large boulders rolling can be stably fixed on the mountain slopes of different angles, the stability of the retardation mechanism is improved, and the impact resistance of the retardation mechanism to the rolling large boulders is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the overall structure of the present application;

[0019] Figure 2 It is a sectional view of the stabilizing mechanism of the present application;

[0020] Figure 3 It is a schematic view of the structure at A of the present application; Figure 2

[0021] Figure 4 It is another sectional view of the oblique anti-disengagement assembly of the present application;

[0022] Figure 5 It is a display view of the retardation mechanism of the present application

[0023] Figure 6 It is a side view of the retardation mechanism of the present application;​

[0024] Figure 7 is a sectional view of the speed buffer column shell of the present application;

[0025] Figure 8 is a structural schematic view of the present application Figure 7 is a structural schematic view of the present application

[0026] In the drawings, the components represented by each reference numeral are listed as follows: 1, protective net; 2, support rod; 3, connecting plate; 4, ground insertion bolt; 5, connecting rod; 6, stone blocking plate; 7, rectangular tube; 8, speed buffer column shell; 9, rotating column; 10, threaded column; 11, splicing rod; 12, anti-disengagement plate 1; 13, connecting ring; 14, columnar groove; 15, Y-shaped plate; 16, anti-disengagement plate 2; 17, concave block; 18, T-shaped block; 19, T-shaped groove; 20, rotating rod; 21, limiting block; 22, sliding block; 23, guide column; 24, first spring; 25, second spring; 26, fixed plate; 27, buffer spring 1; 28, spacing plate; 29, buffer spring 2; 30, buffer spring 3; 31, concave groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] Embodiment one

[0029] Please refer to Figures 1-8 , a kind of foundation pit rock layer blasting protective facilities supporting structure in the drawing, including two support rods 2 and the protective net 1 of fixed connection between support rod 2, the lower edge of the front end of two support rods 2 is rotatably connected with connecting plate 3, the inner wall of two connecting plates 3 is equipped with stabilizing mechanism, and the front end of two connecting plates 3 is connected with speed buffer mechanism;

[0030] The speed buffer mechanism includes rectangular tube 7 fixedly connected to the front end of the two connecting plates 3, the interior of the two rectangular tubes 7 is slidably inserted with connecting rod 5, the rear end of the two connecting rods 5 is fixedly connected with the front end of the two connecting plates 3 respectively, and the front end of the two connecting rods 5 is rotatably connected with the inclined stone blocking plate 6, the stone blocking plate 6 and the two connecting rods 5 are respectively provided with buffer mechanism and limiting piece, and the outer surface of the stone blocking plate 6 is linearly arrayed fixedly connected with a plurality of speed buffer column shells 8, and the interior of the plurality of speed buffer column shells 8 is provided with a support assembly.

[0031] Please refer to Figure 1 , Figure 5 andFigure 6 The buffering mechanism comprises a concave groove 31 formed in the upper end of the connecting rod 5, the inner wall of the concave groove 31 is fixedly connected with a guide column 23, the outer wall of the guide column 23 is slidably sleeved with a sliding block 22, the lower end of the sliding block 22 is in close contact with the bottom end of the concave groove 31, and the rear end of the sliding block 22 is fixedly connected with the rear end of the concave groove 31 through a first spring 24, the first spring 24 is slidably sleeved on the outer wall of the guide column 23, and the upper end of the sliding block 22 is rotatably connected with the outer wall of the boulder plate 6 through a rotating rod 20.

[0032] Please refer to Figure 6 The limiting piece comprises a limiting block 21 fixedly connected to the upper end of the connecting rod 5, and the limiting block 21 is close to the boulder plate 6, and the limiting block 21 and the connecting rod 5 are integrally formed.

[0033] Please refer to Figure 7 and Figure 8 The supporting assembly comprises a plurality of fixed plates 26 linearly arrayed and fixedly connected to the inner bottom end of the retardation column shell 8, the outer wall of each fixed plate 26 is fixedly connected with a spacing plate 28, and the outer wall of each fixed plate 26 is fixedly connected with a first buffer spring 27, a second buffer spring 29 and a third buffer spring 30, one end of each spacing plate 28 away from the fixed plate 26 is fixedly connected to the inner wall of the retardation column shell 8, the first buffer spring 27 is located between two adjacent spacing plates 28, and the second buffer spring 29 and the third buffer spring 30 are respectively located between the inner wall of the retardation column shell 8 and the two spacing plates 28.

[0034] Please refer to Figure 1 The retardation column shell 8 is made of polystyrene material, and the boulder plate 6 is made of wear-resistant steel material; the retardation column shell 8 made of polystyrene material has good impact resistance, and the boulder plate 6 made of wear-resistant steel material has good use strength.

[0035] In this embodiment, when the support rod 2 and the protective net 1 are installed around the blasting area of the pit rock layer blasting, a corresponding number of support rods 2 and protective nets 1 can be installed according to the size of the blasting area. The two connecting plates 3, the two rectangular tubes 7, the two connecting rods 5 and the boulder plate 6 can be attached to the mountain slope surface, and since the two connecting plates 3 are rotatably connected to the two support rods 2, they can be attached to the mountain slope surface at different angles. Then, the two connecting plates 3 can be fixed to the mountain slope surface through the stabilizing mechanism, and the two rectangular tubes 7, the two connecting rods 5 and the boulder plate 6 are fixed accordingly.

[0036] When the explosion, the surface of the explosive body will be covered with a layer of gun, to avoid the danger of flying too much stone. After blasting, many debris along the mountain slope, small debris quality light easy to stay on the mountain slope. And the large stone fall gravity acceleration fast with a large kinetic energy to the protective net 1, will pass through the inclined stone plate 6, the large stone will be pressed down the stone plate 6, the stone plate 6 will drive the two rotating rods 20, the two rotating rods 20 will drive the sliding block 22 at the bottom of the two connecting rods 5 respectively in the concave groove 31 on the upper end, and the two sliding blocks 22 will be outside the corresponding guide column 23, and the two sliding blocks 22 will extrude the first spring 24 connected between the corresponding concave groove 31. At the same time, under the impact of the large stone, the stone plate 6 can also drive the two connecting rods 5 respectively in the two rectangular tubes 7, and the two connecting rods 5 will extrude the second spring 25 connected between the corresponding connecting plate 3. At the same time, the large stone rolls over the pressed stone plate 6, will also pass through the surface of the stone plate 6 of a plurality of convex speed column shell 8, the speed column shell 8 under the pressure of the buffer spring 27, buffer spring 29 and buffer spring 30 in its interior will be extruded, and under the support of the fixed plate 26 and the spacer plate 28, the speed column shell 8 will be partially depressed, and the speed column shell 8 can make the large stone roll down with a jolt, and under the action of the first spring 24 and the second spring 25, the impact force of the large stone can be reduced. The large stone will reduce its rolling speed before contacting the protective net 1, and the kinetic energy will decrease, thereby reducing the damage to the protective net 1, and the safety factor is higher.

[0037] Example two

[0038] Please refer to Figure 2 and Figure 3 , the embodiment is further illustrated in example one, the stable mechanism includes ground insertion bolt 4, the ground insertion bolt 4 is screwed in the inner wall of connecting plate 3, and the inner wall of ground insertion bolt 4 is provided with columnar groove 14, the inner bottom of columnar groove 14 is rotatably connected with threaded column 10, the top end of threaded column 10 is movably inserted into the hexagonal part of ground insertion bolt 4, and the top end of threaded column 10 is fixedly connected with rotating column 9, and horizontal anti-loose assembly and inclined anti-loose assembly are respectively arranged between the outer wall of threaded column 10 and the inner wall of ground insertion bolt 4.

[0039] Please refer to Figure 2 and Figure 3, the horizontal anti-off assembly in the drawing includes a plurality of connecting rings 13, which are sequentially screwed on the outer wall of the threaded column 10 from top to bottom, and a set of spliced rods 11 is rotationally connected to the outer wall of each connecting ring 13, the number of each set of spliced rods 11 is three, the ends of the three spliced rods 11 away from the connecting ring 13 are rotationally connected with an anti-off plate one 12, one end of the three anti-off plates one 12 is slidably inserted into the inner wall of the ground insertion bolt 4, and the other end of the three anti-off plates one 12 is attached to the outer wall of the threaded column 10, and the three anti-off plates one 12 are horizontally arranged.

[0040] Please refer to Figure 3 and Figure 4 , the inclined anti-off assembly in the drawing includes a Y-shaped plate 15, which is screwed on the outer wall of the threaded column 10 near the lower edge, and a plurality of T-shaped grooves 19 are formed around the central annular array at the lower end of the Y-shaped plate 15, the inner wall of each T-shaped groove 19 is slidably attached with a T-shaped block 18, the lower end of each T-shaped block 18 is fixedly connected with a concave block 17, the inner wall of each concave block 17 is rotationally connected with an anti-off plate two 16, and each anti-off plate two 16 is slidably inserted into the bottom inner wall of the ground insertion bolt 4, and each anti-off plate two 16 is arranged obliquely.

[0041] In this embodiment, when the connecting plate 3 is fixed, the ground insertion bolt 4 is screwed into the inner wall of the connecting plate 3 and screwed into the land of the mountain, then the rotating column 9 is rotated, the rotating column 9 can drive the threaded column 10 to rotate inside the columnar groove 14, the threaded column 10 can drive the plurality of connecting rings 13 screwed on its outer wall to move downward synchronously, each connecting ring 13 can drive the three spliced rods 11 rotationally connected to its outer wall to rotate in the form of synchronous outward expansion, the anti-off plate one 12 rotationally connected to the bottom end of the three spliced rods 11 can slide outward in the inner wall of the ground insertion bolt 4 until the rotating column 9 cannot be rotated, at this time, the plurality of anti-off plates one 12 can be horizontally inserted into the soil body. At the same time, the threaded column 10 can also drive the Y-shaped plate 15 to move downward when rotating, the Y-shaped plate 15 can drive the plurality of anti-off plates two 16 to slide outward obliquely in the bottom inner wall of the ground insertion bolt 4 through the T-shaped groove 19, the T-shaped block 18 and the concave block 17, in the process, each anti-off plate two 16 can rotate in the corresponding concave block 17, and the concave block 17 can drive the T-shaped block 18 connected to its top end to slide in the corresponding T-shaped groove 19, and the plurality of anti-off plates two 16 can be obliquely inserted into the soil body. Thus, the stability of the ground insertion bolt 4 screwed into the land of the mountain is greatly improved, thereby increasing the stability of the connecting plate 3 and improving the stability of the speed reduction mechanism.

[0042] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0043] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A support structure of a foundation rock stratum blasting protection facility, comprising two support rods (2) and a protection net (1) fixedly connected between the support rods (2), characterized in that: The lower edge of the front end of the two support rods (2) is rotatably connected with a connecting plate (3), the inner wall of the two connecting plates (3) is provided with a stabilizing mechanism, and the front ends of the two connecting plates (3) are jointly connected with a speed reduction mechanism. The speed reduction mechanism comprises rectangular pipes (7) fixedly connected to the front ends of the two connecting plates (3), the interiors of the two rectangular pipes (7) are slidably inserted with connecting rods (5), the rear ends of the two connecting rods (5) are fixedly connected with the front ends of the two connecting plates (3) through second springs (25), the front ends of the two connecting rods (5) are jointly rotatably connected with an inclined boulder stopping plate (6), the boulder stopping plate (6) and the two connecting rods (5) are respectively provided with buffer mechanisms and limiting pieces, and the outer surface of the boulder stopping plate (6) is linearly fixedly connected with a plurality of speed reduction cylinder shells (8), the interiors of the plurality of speed reduction cylinder shells (8) are provided with support assemblies. The buffer mechanism comprises a concave groove (31) formed in the upper end of the connecting rod (5), the inner wall of the concave groove (31) is fixedly connected with a guide column (23), the outer wall of the guide column (23) is slidably sleeved with a sliding block (22), the lower end of the sliding block (22) is attached to the bottom end of the concave groove (31), the rear end of the sliding block (22) and the rear end of the concave groove (31) are fixedly connected with a first spring (24), the first spring (24) is slidably sleeved on the outer wall of the guide column (23), and the upper end of the sliding block (22) and the outer wall of the boulder stopping plate (6) are rotatably connected with a rotating rod (20). The limiting piece comprises a limiting block (21) fixedly connected to the upper end of the connecting rod (5), the limiting block (21) is close to the boulder stopping plate (6), and the limiting block (21) and the connecting rod (5) are integrally formed. The support assembly comprises a plurality of fixed plates (26) linearly fixedly connected to the inner bottom end of the speed reduction cylinder shell (8), the outer wall of each of the plurality of fixed plates (26) is symmetrically fixedly connected with a spacing plate (28), and the outer wall of each of the plurality of fixed plates (26) is fixedly connected with a buffer spring one (27), a buffer spring two (29) and a buffer spring three (30), one end of each of the two spacing plates (28) away from the fixed plate (26) is fixedly connected to the inner wall of the speed reduction cylinder shell (8), the buffer spring one (27) is located between the two adjacent spacing plates (28), and the buffer spring two (29) and the buffer spring three (30) are respectively located between the two spacing plates (28) and the inner wall of the speed reduction cylinder shell (8). The speed reduction cylinder shell (8) is made of polystyrene material, and the boulder stopping plate (6) is made of wear-resistant steel material.

2. A support structure for a foundation rock stratum blasting protection facility according to claim 1, characterized in that: The firm mechanism includes ground insertion bolts (4), the ground insertion bolts (4) are screwed in the inner wall of the connecting plate (3), and the inner wall of the ground insertion bolt (4) is provided with a cylindrical groove (14), the inside bottom end of the cylindrical groove (14) is rotatably connected with a threaded column (10), the top end of the threaded column (10) movably penetrates the hexagonal part of the ground insertion bolt (4), and the top end of the threaded column (10) is fixedly connected with a rotating column (9), and horizontal anti-disengagement components and inclined anti-disengagement components are respectively arranged between the outer wall of the threaded column (10) and the inner wall of the ground insertion bolt (4).

3. A support structure for a foundation rock stratum blasting protection facility according to claim 2, characterized in that: The horizontal anti-disengagement component includes a plurality of connecting rings (13), a plurality of the connecting rings (13) are sequentially screwed on the outer wall of the threaded column (10) from top to bottom, a group of splicing rods (11) are rotatably connected to the outer wall of each connecting ring (13), each group of the splicing rods (11) has three rods, the ends, away from the connecting ring (13), of the three splicing rods (11) are rotatably connected with anti-disengagement plates (12), one end of the three anti-disengagement plates (12) is slidably inserted into the inner wall of the ground insertion bolt (4), the other end of the three anti-disengagement plates (12) is attached to the outer wall of the threaded column (10), and the three anti-disengagement plates (12) are horizontally arranged.

4. The support structure of claim 2, wherein: The inclined anti-disengagement component includes a Y-shaped plate (15), the Y-shaped plate (15) is screwed on the outer wall of the threaded column (10) near the lower edge, a plurality of T-shaped grooves (19) are formed in the lower end of the Y-shaped plate (15) around the central annular array, the inner wall of each T-shaped groove (19) is slidably attached with a T-shaped block (18), the lower end of each T-shaped block (18) is fixedly connected with a concave block (17), the inner wall of each concave block (17) is rotatably connected with an anti-disengagement plate (16), the plurality of anti-disengagement plates (16) are slidably inserted into the bottom inner wall of the ground insertion bolt (4), and the plurality of anti-disengagement plates (16) are inclinedly arranged.

Images