A temporary support structure for crushing surrounding rock

Abstract

The utility model discloses a temporary support structure for crushing surrounding rocks, comprising a base, a main hydraulic rod, a main support plate, a side hydraulic rod, a side support plate and an anti-falling rock mechanism. The utility model is capable of intercepting falling rocks and protecting the safety of personnel and equipment below by arranging the anti-falling rock mechanism on the left and right sides of the main support plate and arranging a blocking net between the main support plate and the side support plate. A quick assembly mechanism is arranged between the blocking net and the side support plate. When the blocking net needs to be removed, the screw connection between the connecting sleeve and the connecting pin is first released, and then the connecting pin is horizontally moved out of the connecting sleeve, and then the connecting pin is loosened to retract the blocking net into the inside of the roll shell, so that the blocking net can be removed, which is convenient for maintenance work.

Description

Technical Field

[0001] The utility model relates to the field of temporary supporting devices, in particular to a temporary supporting structure for crushing surrounding rocks. Background Art

[0002] Surrounding rock support refers to the process of taking certain technical measures to support and maintain the surrounding rock during rock excavation and tunnel excavation in order to ensure project safety, prevent surrounding rock collapse, and ensure project quality. Surrounding rock support is an indispensable part of rock engineering and tunnel engineering.

[0003] Existing patent application number 202321430917.6: A temporary support structure for an underground mine, comprising a first support column, an ear seat symmetrically connected to the middle of a side wall on the outer circumference of the first support column, and a second hinge connected to the end of a hydraulic rod connected to the outer ends of a first hydraulic cylinder and a second hydraulic cylinder connected to the other side wall of the first support column from front to back. The utility model facilitates the splicing of adjacent temporary support structures by setting a horizontal axis, a first arc-shaped positioning block and a second arc-shaped positioning block, and improves the supporting effect on the top of the underground mine by setting a first hydraulic cylinder, a second hydraulic cylinder, a first hinge, a second hinge and an ear seat.

[0004] The above patent records a temporary support structure that can provide good support for the surrounding rock, but broken surrounding rock may be encountered during the construction process. Broken surrounding rock refers to the phenomenon that the surrounding rock is broken, collapsed or shattered due to external forces in geological engineering. The rock mass is relatively fragile and is more prone to rockfall and other phenomena, causing damage to personnel and equipment below. The existing temporary support structure can be improved to further improve its protective performance. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a temporary supporting structure for crushing surrounding rocks.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a temporary support structure for crushing surrounding rocks, comprising a base, a main hydraulic rod, a main support plate, a side hydraulic rod, a side support plate and an anti-rockfall mechanism, wherein a main hydraulic rod is installed in the middle of the top surface of the base, a main support plate is installed at the top telescopic end of the main hydraulic rod, side hydraulic rods are symmetrically installed on the left and right sides of the top surface of the base, side support plates are installed at the top telescopic end of the side hydraulic rod, and anti-rockfall mechanisms are arranged on the left and right sides of the main support plate, and the anti-rockfall mechanism comprises a winding shell, a spring shaft, and a barrier net , through grooves and quick assembly mechanism, the left and right sides of the bottom surface of the main support plate are screwed with a winding shell, a spring shaft is horizontally arranged on the inner side of the winding shell, the front and rear ends of the spring shaft are rotatably connected with the winding shell by a clockwork spring, the spring shaft is connected and fixed to the head end of the protective net, the protective net is wound on the surface of the spring shaft, through grooves are provided on the left and right side walls of the main support plate, and the through grooves are connected to the inner side of the winding shell, the end of the protective net extends outward through the through groove and is connected to the side edge of the side support plate, and the protective net and the side support plate are connected by a quick assembly mechanism.

[0007] Preferably, the main support plate is consistent with the side support plate in size, and the side length of the barrier net is at least 90% of the side length of the main support plate.

[0008] Preferably, the barrier net is made of polyester fiber.

[0009] Preferably, the inner diameter of the mesh of the barrier net does not exceed 2.5 cm.

[0010] Preferably, the quick assembly mechanism includes a connecting sleeve, an opening and a connecting pin. A connecting sleeve is welded on one side of the side support plate close to the main support plate. An opening is provided on the side of the connecting sleeve. The end of the protective net is connected and fixed to the connecting pin. The connecting pin is horizontally inserted into the inner side of the connecting sleeve from front to back, and the protective net extends out of the connecting sleeve through the opening. The rear end of the connecting sleeve is connected and fixed to the connecting pin by screws.

[0011] Preferably, the outer diameter of the connecting pin is larger than the inner diameter of the through slot.

[0012] Beneficial effects of the utility model:

[0013] The utility model is capable of intercepting falling rocks and protecting the safety of personnel and equipment below by arranging anti-falling rock mechanisms on the left and right sides of the main supporting plate and arranging a blocking net between the main supporting plate and the side supporting plates.

[0014] The utility model provides a quick assembly mechanism between the guard net and the side support plate. When the guard net needs to be removed, the screw connection between the connecting sleeve and the connecting pin is first released, and then the connecting pin is horizontally moved out of the connecting sleeve. Then the connecting pin is loosened to retract the guard net into the roll shell, and the guard net can be removed, which is convenient for maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the local structure;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of a top view structure;

[0018] Figure 4 It is a schematic diagram of the front cross-sectional structure of the main support plate in the utility model;

[0019] Figure 5 It is a front view structural schematic diagram of the side support plate in the utility model.

[0020] Among them: base-1, main hydraulic rod-2, main support plate-3, side hydraulic rod-4, side support plate-5, anti-rockfall mechanism-6, winding shell-61, spring shaft-62, guardrail net-63, through groove-64, quick assembly mechanism-65, connecting sleeve-651, opening-652, connecting pin-653. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1 The utility model provides a temporary support structure for crushing surrounding rocks, including a base 1, a main hydraulic rod 2, a main supporting plate 3, a side hydraulic rod 4, a side supporting plate 5 and an anti-rockfall mechanism 6. The main hydraulic rod 2 is installed in the middle of the top surface of the base 1, the main supporting plate 3 is installed at the top telescopic end of the main hydraulic rod 2, the side hydraulic rods 4 are symmetrically installed on the left and right sides of the top surface of the base 1, the side supporting plates 5 are installed at the top telescopic ends of the side hydraulic rods 4, and the anti-rockfall mechanism 6 is arranged on the left and right sides of the main supporting plate 3.

[0023] See also Figure 2-4The rockfall prevention mechanism 6 in the utility model includes a winding shell 61, a spring shaft 62, a protection net 63, a through slot 64 and a quick assembly mechanism 65. The winding shell 61 is screwed on both sides of the left and right sides of the bottom surface of the main support plate 3. A spring shaft 62 is horizontally arranged on the inner side of the winding shell 61. The front and rear ends of the spring shaft 62 are rotatably connected to the winding shell 61 by a clockwork spring. The spring shaft 62 is connected and fixed to the head end of the protection net 63. The protection net 63 is wound on the surface of the spring shaft 62. Through slots 64 are opened on the left and right side walls of the main support plate 3, and the through slots 64 are connected to the inner side of the winding shell 61. The end of the protection net 63 extends outward through the through slot 64 and is connected to the side of the side support plate 5. The rockfall prevention mechanism 6 can pull a net for protection between the main support plate 3 and the side support plate 5 to intercept falling rocks and protect the safety of personnel and equipment below. The protection net 63 and the side support plate 5 are connected by a quick assembly mechanism 65.

[0024] To further explain, the main support plate 3 and the side support plate 5 are consistent in size, and the side length of the barrier net 63 is at least 90% of the side length of the main support plate 3 to ensure the interception range of the barrier net 63.

[0025] It is further explained that the barrier net 63 is made of polyester fiber, which is light in weight, high in strength, has good load-bearing capacity, and can effectively intercept falling rocks.

[0026] It is further explained that the inner diameter of the mesh of the retaining net 63 does not exceed 2.5 cm to effectively intercept the broken rock mass.

[0027] See also Figure 5 The quick assembly mechanism 65 in the utility model includes a connecting sleeve 651, an opening 652 and a connecting pin 653. A connecting sleeve 651 is welded on one side of the side support plate 5 close to the main support plate 3. An opening 652 is opened on the side of the connecting sleeve 651. The end of the guard net 63 is connected and fixed with the connecting pin 653. The connecting pin 653 is horizontally inserted into the inner side of the connecting sleeve 651 from front to back, and the guard net 63 passes through the opening 652 and extends out of the connecting sleeve 651. The rear end of the connecting sleeve 651 is connected and fixed with the connecting pin 653 by screws.

[0028] To further explain, the outer diameter of the connecting pin 653 is larger than the inner diameter of the through slot 64, so that the connecting pin 653 cannot pass through the through slot 64, thereby preventing the guard net 63 from being completely retracted into the reel shell 61 and being difficult to remove.

[0029] Here’s how it works:

[0030] First, place the base 1 at the work site, then activate the main hydraulic rod 2 and the side hydraulic rod 4, let the main hydraulic rod 2 support the main support plate 3 upward to the middle of the tunnel top surface, and let the side hydraulic rod 4 support the side support plate 5 upward to both sides of the tunnel top surface, thereby providing top support for the tunnel to prevent collapse accidents.

[0031] Secondly, by setting an anti-rockfall mechanism 6 on the left and right sides of the main support plate 3, a protective net 63 is set between the main support plate 3 and the side support plate 5, which can intercept falling rocks and protect the safety of personnel and equipment below, and when the distance between the main support plate 3 and the side support plate 5 increases, the protective net 63 rolled up on the surface of the spring shaft 62 will pass through the through groove 64 and be pulled outward. When the distance between the main support plate 3 and the side support plate 5 is reduced, the spring shaft 62 will pull the excess protective net 63 back to the inside of the winding shell 61. The protective net 63 can automatically adapt to the distance between the main support plate 3 and the side support plate 5, and is easy to use.

[0032] Third, by setting a quick assembly mechanism 65 between the protective net 63 and the side support plate 5, when the protective net 63 needs to be removed, first release the screw connection between the connecting sleeve 651 and the connecting pin 653, then move the connecting pin 653 horizontally out of the connecting sleeve 651, and then loosen the connecting pin 653 to retract the protective net 63 into the reel shell 61, so that the protective net 63 can be removed, which is convenient for maintenance work.

[0033] The utility model provides a temporary supporting structure for crushing surrounding rocks, by arranging anti-rockfall mechanisms 6 on the left and right sides of the main supporting plate 3, by arranging a guard net 63 between the main supporting plate 3 and the side supporting plate 5, it is possible to intercept falling rocks and protect the safety of personnel and equipment below, and by arranging a quick assembly mechanism 65 between the guard net 63 and the side supporting plate 5, when it is necessary to remove the guard net 63, first release the screw connection between the connecting sleeve 651 and the connecting pin 653, then move the connecting pin 653 horizontally out of the connecting sleeve 651, and then loosen the connecting pin 653 to retract the guard net 63 into the inside of the reel 61, so that the guard net 63 can be removed, and maintenance work is convenient.

[0034] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. 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 temporary support structure for crushing surrounding rocks, comprising a base (1), a main hydraulic rod (2), a main support plate (3), a side hydraulic rod (4) and a side support plate (5), wherein the main hydraulic rod (2) is installed in the middle of the top surface of the base (1), the main support plate (3) is installed at the top telescopic end of the main hydraulic rod (2), the side hydraulic rods (4) are symmetrically installed on the left and right sides of the top surface of the base (1), and the side support plate (5) is installed at the top telescopic end of the side hydraulic rod (4); Features: The invention also comprises a rock-fall prevention mechanism (6), wherein the rock-fall prevention mechanism (6) is arranged on the left and right sides of the main support plate (3), and the rock-fall prevention mechanism (6) comprises a winding shell (61), a spring shaft (62), a protection net (63), a through slot (64) and a quick assembly mechanism (65), and the winding shell (61) is screwed on the left and right sides of the bottom surface of the main support plate (3), and the spring shaft (62) is horizontally arranged inside the winding shell (61), and the front and rear ends of the spring shaft (62) are connected to the winding shell (61) by a spring spring. The spring shaft (62) is connected and fixed to the front end of the protection net (63), the protection net (63) is wound on the surface of the spring shaft (62), the left and right side walls of the main support plate (3) are provided with through grooves (64), and the through grooves (64) are connected to the inner side of the winding shell (61), the end of the protection net (63) extends outward through the through grooves (64) and is connected to the side of the side support plate (5), and the protection net (63) and the side support plate (5) are connected by a quick assembly mechanism (65).

2. A temporary support structure for crushing surrounding rocks according to claim 1, characterized in that: The main support plate (3) and the side support plate (5) are of the same size, and the side length of the protection net (63) is at least 90% of the side length of the main support plate (3).

3. A temporary support structure for crushing surrounding rocks according to claim 1, characterized in that: The barrier net (63) is made of polyester fiber.

4. A temporary support structure for crushing surrounding rocks according to claim 1, characterized in that: The inner diameter of the mesh of the protection net (63) does not exceed 2.5 cm.

5. A temporary support structure for crushing surrounding rocks according to claim 1, characterized in that: The quick assembly mechanism (65) comprises a connecting sleeve (651), an opening (652) and a connecting pin (653); a connecting sleeve (651) is welded on one side of the side support plate (5) close to the main support plate (3); an opening (652) is provided on the side of the connecting sleeve (651); the end of the guard net (63) is connected and fixed to the connecting pin (653); the connecting pin (653) is horizontally inserted into the inner side of the connecting sleeve (651) from front to back; the guard net (63) passes through the opening (652) and extends out of the connecting sleeve (651); and the rear end of the connecting sleeve (651) is connected and fixed to the connecting pin (653) by screws.

6. A temporary support structure for crushing surrounding rocks according to claim 5, characterized in that: The outer diameter of the connecting pin (653) is greater than the inner diameter of the through slot (64).

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