Supporting device for roadbed stone blasting

Abstract

The utility model provides a supporting device for subgrade stone blasting, which belongs to the technical field of slope supporting and comprises a bottom frame, a supporting frame rotatably connected to the top wall of the bottom frame, a lifting frame slidably connected to the inner wall of the supporting frame and a top frame rotatably connected to the top wall of the lifting frame, and the side wall of the supporting frame is further provided with an adjusting component used for driving the lifting frame. The two supporting ends of the bottom frame are each provided with a telescopic component used for increasing the supporting force of the bottom frame, a matched protective net is further arranged on the inner wall of the supporting frame, and a limiting component used for limiting the protective net is further arranged between the two sets of limiting grooves. The side slope protection device is suitable for side slope protection of different heights, the overall applicability is improved, the supporting force of the bottom frame is increased in the process of adjusting the protection height through cooperation of the adjusting component and the telescopic component, and therefore the supporting stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slope support, and particularly relates to a support device for rock blasting of roadbed. Background Art

[0002] In the process of road construction in our country, the development and excavation of roadbed mainly adopt the method of blasting. Rocks are broken under the action of shock waves generated by blasting and pressure generated by gas expansion. After excavation blasting, a slope support structure is required to protect the slope of the blasted roadbed and prevent the slope from collapsing due to natural factors such as wind and rain.

[0003] After retrieval, a patent with the Chinese patent application number 202223542192.8 discloses a slope support structure for soft rock roadbed blasting excavation, including a base, a first positioning pin, a frame, a curing net, a connecting frame, a positioning insertion rod, a disassembly frame, a reinforcement frame, a top plate and a second positioning pin. The lower side of the base is welded with a first positioning pin, and one side of the base is hinged with a frame; a curing net is arranged inside the frame, and connecting frames are welded on both sides of the frame, and a positioning insertion rod passes through the inside of the connecting frame; a disassembly frame is welded on one side of the frame, and a reinforcement frame passes through the inside of the disassembly frame, and one side of the reinforcement frame is attached to the curing net; the upper end of the frame is hinged with a top plate, and the lower side of the top plate is welded with a second positioning pin;

[0004] Although the above patent realizes the protection of the slope, there are still the following deficiencies in the use process: it is inconvenient to adjust the support range of the frame according to the height to be protected, and it is necessary to prepare frames with different heights to be applicable to slopes with different heights. This is tantamount to increasing the construction difficulty and raising the construction cost, and it is particularly inconvenient to use.

[0005] Therefore, there is an urgent need for a support device for rock blasting of roadbed to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to address the current problem that it is inconvenient to adjust the support range of the frame according to the height to be protected, and it is necessary to prepare frames with different heights to be applicable to slopes with different heights. This is tantamount to increasing the construction difficulty and raising the construction cost, and it is particularly inconvenient to use.

[0007] In order to achieve the above-mentioned invention purpose, the utility model provides the following technical solutions:

[0008] A support device for subgrade rock blasting, comprising a chassis, a support frame rotatably connected to the top wall of the chassis, a lifting frame slidably connected to the inner wall of the support frame, and a top frame rotatably connected to the top wall of the lifting frame. Corresponding limiting grooves are provided on the side walls of the support frame and the lifting frame, and limiting columns are fixedly connected to the inner walls of the limiting grooves. First sliding grooves and second sliding grooves symmetrically arranged with respect to the limiting grooves are respectively provided on the side wall of the support frame and the top wall of the chassis. An adjusting component for driving the lifting frame is further provided on the side wall of the support frame. Telescopic components for increasing the supporting force of the chassis are provided at both supporting ends of the chassis. A matching protective net is further provided on the inner wall of the support frame. A limiting component for limiting the protective net is provided between the two groups of limiting grooves.

[0009] As a preferred technical solution of the present application, the adjusting component includes a driving shaft rotatably connected to the side wall of the support frame, lifting screws rotatably connected to the side wall of the support frame and symmetrically arranged with respect to the limiting grooves, a first bevel gear fixedly connected to the bottom of the lifting screw, and a first sleeve threadedly connected to the outer wall of the lifting screw. Both groups of the first sleeves pass through the first sliding grooves and are fixedly connected to the lifting frame. A second bevel gear symmetrically arranged with respect to the limiting grooves is further fixedly connected to the outer wall of the driving shaft, and the second bevel gear is meshed with the first bevel gear. A turning handle is fixedly connected to one end of the driving shaft.

[0010] As a preferred technical solution of the present application, the telescopic component includes a support rod slidably connected to the inner wall of the chassis, a support screw rotatably connected to the top wall of the chassis, a third bevel gear fixedly connected to one end of the support screw close to the driving shaft, and a second sleeve threadedly connected to the outer wall of the support screw. The second sleeve passes through the second sliding groove and is fixedly connected to the support rod. The third bevel gear is meshed with the second bevel gear.

[0011] As a preferred technical solution of the present application, the limiting component includes a limiting rod and a limiting sleeve rod respectively sleeved on the outer walls of the two groups of limiting columns. The limiting sleeve rod is slidably connected to the limiting rod. A locking nut is threadedly connected to the outer wall of one group of the limiting columns. A limiting bolt is further provided on the outer wall of the limiting sleeve rod.

[0012] As a preferred technical solution of the present application, fixing plates are detachably connected to the inner walls of the chassis and the top frame through bolts. Fixed cones evenly distributed are further provided on the bottom wall of the fixing plate. Reinforcing cones evenly arranged are fixedly connected to both side walls of the support frame.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the solution of the present application:

[0015] By means of the cooperation between the provided adjusting component and the lifting frame, the total height of the lifting frame and the support frame can be adjusted. After adjusting to the appropriate height, by selecting the number of protective nets, it can be applied to slope protection of different heights, increasing the overall applicability. And through the cooperation between the adjusting component and the telescopic component, during the process of adjusting the protection height, the supporting force of the chassis is increased, thereby enhancing the stability of the support, solving the problem in the prior art that it is inconvenient to adjust the support range of the frame according to the height to be protected, and it is necessary to prepare frames of different heights to be applicable to slopes of different heights, which is tantamount to increasing the construction difficulty, raising the construction cost, and being particularly inconvenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 One of the overall structural schematic diagrams of the support device for subgrade rock blasting provided by this application;

[0017] Figure 2 Two of the overall structural schematic diagrams of the support device for subgrade rock blasting provided by this application;

[0018] Figure 3 Partial structural schematic diagram of the support device for subgrade rock blasting provided by this application;

[0019] Figure 4 For the support device for subgrade rock blasting provided by this application Figure 1 Enlarged view of structure A;

[0020] Figure 5 For the support device for subgrade rock blasting provided by this application Figure 3 Enlarged view of structure B.

[0021] Labels in the figure:

[0022] 1. Chassis; 11. Support rod; 12. Support screw; 13. Second sleeve; 14. Top frame; 15. Fixed plate; 16. Fixed cone; 17. Reinforcing cone; 18. Third bevel gear; 2. Support frame; 21. Limit groove; 22. Limit post; 23. First sliding groove; 24. Second sliding groove; 25. Protective net; 3. Lifting frame; 31. Limit rod; 32. Limit sleeve rod; 33. Locking nut; 34. Limit bolt; 4. Drive shaft; 41. Lifting screw; 42. First bevel gear; 43. First sleeve; 44. Second bevel gear; 45. Rotating handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0024] As shown Figures 1-5 in the figure, a support device for subgrade rock blasting proposed in this embodiment includes a chassis 1, a support frame 2 rotatably connected to the top wall of the chassis 1, a lifting frame 3 slidably connected to the inner wall of the support frame 2, and a top frame 14 rotatably connected to the top wall of the lifting frame 3. Corresponding limiting grooves 21 are provided on the side walls of the support frame 2 and the lifting frame 3, and limiting columns 22 are fixedly connected to the inner walls of the limiting grooves 21. First sliding grooves 23 and second sliding grooves 24 symmetrically arranged with respect to the limiting grooves 21 are respectively provided on the side wall of the support frame 2 and the top wall of the chassis 1. An adjusting component for driving the lifting frame 3 is further provided on the side wall of the support frame 2. Telescopic components for increasing the supporting force of the chassis 1 are provided at both supporting ends of the chassis 1. A matching protective net 25 is further provided on the inner wall of the support frame 2. A limiting component for limiting the protective net 25 is provided between the two groups of limiting grooves 21. By matching the provided adjusting component with the lifting frame 3, the total height of the lifting frame 3 and the support frame 2 can be adjusted. After adjusting to a suitable height, the number of protective nets 25 is selected to be applicable to slope protection of different heights, increasing the overall applicability.

[0025] As shown Figures 1-5 in the figure, as a preferred embodiment, on the basis of the above method, further, the adjusting component includes a driving shaft 4 rotatably connected to the side wall of the support frame 2, lifting screws 41 rotatably connected to the side wall of the support frame 2 and symmetrically arranged with respect to the limiting grooves 21, a first bevel gear 42 fixedly connected to the bottom of the lifting screw 41, and a first sleeve 43 threadedly connected to the outer wall of the lifting screw 41. Both groups of first sleeves 43 pass through the first sliding grooves 23 and are fixedly connected to the lifting frame 3. Second bevel gears 44 symmetrically arranged with respect to the limiting grooves 21 are further fixedly connected to the outer wall of the driving shaft 4, and the second bevel gears 44 are meshed with the first bevel gears 42. One end of the driving shaft 4 is further fixedly connected with a turning handle 45. By rotating the driving shaft 4 through the turning handle 45, the two groups of second bevel gears 44 drive the two groups of first bevel gears 42 and the third bevel gear 18 to rotate, thereby driving the support screw 12 and the lifting screw 41 to rotate synchronously. When the lifting screw 41 rotates, the lifting frame 3 is driven to slide inside the support frame 2 through the first sleeve 43, thereby realizing the adjustment of the total height of the lifting frame 3 and the support frame 2.

[0026] As shown Figures 1-5As shown, as a preferred embodiment, on the basis of the above method, further, the telescopic member includes a support rod 11 slidably connected to the inner wall of the chassis 1, a support screw 12 rotatably connected to the top wall of the chassis 1, a third bevel gear 18 fixedly connected to one end of the support screw 12 close to the drive shaft 4, and a second sleeve 13 threadedly connected to the outer wall of the support screw 12. The second sleeve 13 passes through the second sliding groove 24 and is fixedly connected to the support rod 11. The third bevel gear 18 is meshed with the second bevel gear 44. When the telescopic screw rotates, it also drives the support rod 11 to extend from the chassis 1 through the second sleeve 13, realizing the adjustment of the supporting force of the chassis 1. During the process of adjusting the protection height, the supporting force of the chassis 1 is increased, thereby increasing the stability of the support.

[0027] As Figure 1 , Figure 3 and Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the limiting member includes a limiting rod 31 and a limiting sleeve rod 32 respectively sleeved on the outer walls of two groups of limiting columns 22. The limiting sleeve rod 32 is slidably connected to the limiting rod 31. A locking nut 33 is also threadedly connected to the outer wall of one group of limiting columns 22, and a limiting bolt 34 is also provided on the outer wall of the limiting sleeve rod 32. The limiting sleeve rod 32 and the limiting rod 31 are respectively inserted into the limiting columns 22, and the fixing of the limiting sleeve rod 32 and the limiting rod 31 is completed through the limiting bolt 34 and the locking nut. The fixing of the protection net 25 is completed through the limiting sleeve rod 32 and the limiting rod 31. By selecting the number of protection nets 25, it is applicable to slope protection of different heights, which is convenient for transportation and increases the overall applicability at the same time.

[0028] As Figures 1-2 As shown, as a preferred embodiment, on the basis of the above method, further, the inner walls of the chassis 1 and the top frame 14 are both detachably connected with fixing plates 15 by bolts. The bottom wall of the fixing plate 15 is also provided with uniformly distributed fixing cones 16. Both side walls of the support frame 2 are fixedly connected with uniformly arranged reinforcing cones 17.

[0029] Specifically, when the supporting device for roadbed rock blasting is in use: Place the device at the position where support is needed. Connect the fixed plate 15 to the chassis 1 through bolts, and fix the chassis 1 to the ground through the fixed cone 16. Then, prop up the support frame 2 so that the support frame 2 and the chassis 1 are in a right-angle state. The third bevel gear 18 meshes with the second bevel gear 44 to fix the support frame 2 and the chassis 1, and complete the fixation of the support frame 2 and the slope through the reinforcement cone 17. Subsequently, according to the height to be protected, rotate the drive shaft 4 through the rotary handle 45, so that the two second bevel gears 44 drive the two first bevel gears 42 and the third bevel gear 18 to rotate, thereby driving the support screw 12 and the lifting screw 41 to rotate synchronously. When the lifting screw 41 rotates, it drives the lifting frame 3 to slide inside the support frame 2 through the first sleeve 43, thereby realizing the adjustment of the total height of the lifting frame 3 and the support frame 2. At the same time, the rotation of the telescopic screw also drives the support rod 11 to extend from the chassis 1 through the second sleeve 13, realizing the adjustment of the supporting force of the chassis 1. During the process of adjusting the protection height, the supporting force of the chassis 1 is increased, thereby increasing the stability of the support. After adjusting to the appropriate height, insert the protection net 25 between the support frame 2 and the lifting frame 3 in sequence. After it matches the total height, insert the limit sleeve rod 32 and the limit rod 31 into the limit column 22 respectively, and complete the fixation of the limit sleeve rod 32 and the limit rod 31 through the limit bolt 34 and the locking nut. Fix the protection net 25 through the limit sleeve rod 32 and the limit rod 31. By selecting the number of protection nets 25, it is suitable for slope protection of different heights, which is convenient for transportation and increases the overall applicability. After the adjustment is completed, through the fixed plate 15 and its fixed cone 16 inside the top frame 14, the protection of the top frame 14 and the slope is realized.

[0030] The above embodiments are only used to illustrate the present invention rather than to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A support device for roadbed rock blasting, comprising a base frame (1), a support frame (2) rotatably connected to the top wall of the base frame (1), a lifting frame (3) slidably connected to the inner wall of the support frame (2), and a top frame (14) rotatably connected to the top wall of the lifting frame (3), characterized in that: The side walls of the support frame (2) and the lifting frame (3) are both provided with corresponding limit grooves (21), the inner walls of the limit grooves (21) are also fixedly connected to limit columns (22), the side walls of the support frame (2) and the top wall of the base frame (1) are respectively provided with a first sliding groove (23) and a second sliding groove (24) symmetrically arranged with respect to the limit grooves (21), the side walls of the support frame (2) are also provided with an adjustment component for driving the lifting frame (3), the two supporting ends of the base frame (1) are both provided with telescopic components for increasing the supporting force of the base frame (1), the inner wall of the support frame (2) is also provided with a matching protective net (25), and a limit component for limiting the protective net (25) is also provided between the two groups of limit grooves (21).

2. A supporting device for roadbed rock blasting according to claim 1, characterized in that: The adjusting component comprises a driving shaft (4) rotatably connected to the side wall of the support frame (2), a lifting screw (41) rotatably connected to the side wall of the support frame (2) and symmetrically arranged with respect to the limiting groove (21), a first bevel gear (42) fixedly connected to the bottom of the lifting screw (41), and a first sleeve (43) threadedly connected to the outer wall of the lifting screw (41), two groups of the first sleeves (43) both pass through the first sliding groove (23) and are fixedly connected to the lifting frame (3), the outer wall of the driving shaft (4) is also fixedly connected to a second bevel gear (44) symmetrically arranged with respect to the limiting groove (21), and the second bevel gear (44) is meshedly connected to the first bevel gear (42), and one end of the driving shaft (4) is also fixedly connected to a turning handle (45).

3. A supporting device for roadbed rock blasting according to claim 1, characterized in that: The telescopic component comprises a support rod (11) slidably connected to the inner wall of the base frame (1), a support screw (12) rotatably connected to the top wall of the base frame (1), a third bevel gear (18) fixedly connected to one end of the support screw (12) close to the drive shaft (4), and a second sleeve (13) threadedly connected to the outer wall of the support screw (12), wherein the second sleeve (13) passes through a second sliding groove (24) and is fixedly connected to the support rod (11), and the third bevel gear (18) is meshingly connected to the second bevel gear (44).

4. A supporting device for roadbed rock blasting according to claim 1, characterized in that: The limiting component comprises a limiting rod (31) and a limiting sleeve rod (32) respectively sleeved on the outer walls of two groups of limiting columns (22); the limiting sleeve rod (32) is slidably connected to the limiting rod (31); a locking nut (33) is threadedly connected to the outer wall of one group of the limiting columns (22); and a limiting bolt (34) is also arranged on the outer wall of the limiting sleeve rod (32).

5. A supporting device for roadbed rock blasting according to claim 1, characterized in that: The inner walls of the bottom frame (1) and the top frame (14) are both detachably connected to a fixing plate (15) via bolts, the bottom wall of the fixing plate (15) is also provided with evenly distributed fixing cones (16), and both side walls of the support frame (2) are fixedly connected with evenly arranged reinforcement cones (17).

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