Slope supporting structure for blasting excavation of soft rock roadbed

Abstract

The utility model relates to the technical field of side slope supporting structures, and discloses a side slope supporting structure for blasting excavation of a soft rock roadbed, which comprises a supporting net and pegs, the pegs are uniformly distributed at four corners of the supporting net, short grooves are formed in two ends of the outside of the supporting net, long grooves are formed in two ends of the outside of the supporting net, and the short grooves are communicated with the long grooves. And a serial connection mechanism is assembled in the short groove. According to the side slope supporting structure for blasting excavation of the soft rock roadbed, when the side slope of the soft rock roadbed is protected and the supporting nets are fixed by the ground nails through the additionally-arranged series connection mechanism, the multiple supporting nets are automatically connected in series, then the stability of the whole supporting nets is improved, and the situation that the single supporting net is prone to being damaged when being collided and torn is avoided; and meanwhile, additional operation steps are not needed when a plurality of supporting nets are spliced, the working speed of assembling the supporting nets is increased, and when the supporting nets are damaged, the ground nails are tilted through crowbars, so that the supporting nets can be disassembled and replaced, and the maintenance speed of the supporting nets is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slope support structure, concretely is a kind of slope support structure for soft rock subgrade blasting excavation. BACKGROUND

[0002] Soft rock subgrade refers to the subgrade base layer containing a high proportion of soft soil layer or soft rock, which has low strength and is easy to deform and metamorphose. In engineering design and construction, soft rock subgrade needs to be reinforced and stabilized by taking appropriate treatment measures to ensure the safety and reliability of the road. Soft rock subgrade needs to be blasted during construction, which facilitates subsequent excavation. A slope support is needed for protecting soft rock subgrade during blasting construction.

[0003] As disclosed in Chinese patent CN219637934U, a slope support is provided to reduce the possibility of separation from the slope during use and increase the practicality of the protective net.

[0004] As in the above scheme, multiple protective nets are provided to fix the ground pegs to form a complete slope support structure. However, a single protective net is prone to damage when subjected to stress, which affects the overall stability of the slope support structure. SUMMARY

[0005] (I) Technical problem solved

[0006] To overcome the shortcomings of the prior art, the utility model provides a slope support structure for soft rock subgrade blasting excavation to solve the technical problem that a single protective net is prone to damage when subjected to stress, which affects the overall stability of the slope support structure.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a slope support structure for soft rock subgrade blasting excavation, comprising: a support net and ground pegs, and the ground pegs are evenly arranged at the four corners of the support net, both ends of the outside of the support net are provided with short grooves, both ends of the outside of the support net are provided with long grooves, and the inside of the short groove is equipped with a series mechanism.

[0009] The series mechanism comprises a cross arm, a threaded rod is threadedly connected to the inside of the cross arm, a gear is sleeved on the outside of the threaded rod, a toothed plate is meshingly connected to the outside of the gear, both ends of the outside of the cross arm are connected to connecting rods through hinges, and the other end of the connecting rod is connected to a clamping block through a hinge.

[0010] Preferably, both ends of the inside of the short groove are evenly provided with sliding grooves, and a sliding block is slidably connected to the inside of the sliding groove, the sliding block is connected to the cross arm, and the sliding groove cooperates with the sliding block to guide the cross arm to move linearly.

[0011] Preferably, the inside of the short groove is provided with a sliding groove at both ends, the sliding groove is slidably connected with a sliding block, and the sliding block is connected with the clamping block.

[0012] Preferably, the inside of the short groove is provided with a square groove, and the inside of the square groove is slidably connected with a toothed plate, the inside of the square groove is connected with a gear through a bearing with a seat, and the square groove can limit the toothed plate so that the toothed plate is always engaged with the gear, and the bearing with a seat can support the gear.

[0013] Preferably, the outside of the ground nail is provided with a fin at both ends, and the fin is polished, so that the fin can increase the stability of the ground nail when fixing the support net.

[0014] Preferably, the short groove comprises two groups of transverse grooves, and the inside of the transverse groove is slidably connected with the cross arm and the clamping block, and a plurality of series connection mechanisms inserted into the inside of the long groove can increase the stability of the support net in series.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a soft rock roadbed blasting excavation uses side slope support structure, has the following beneficial effects:

[0017] The soft rock roadbed blasting excavation uses side slope support structure, when protecting the side slope of the soft rock roadbed, through the series connection mechanism fixed in the ground nail support net, a plurality of support nets are automatically connected in series, thereby increasing the stability of the overall support net, avoiding damage to the single support net when being impacted and torn, and simultaneously avoiding the need for additional operation steps when splicing a plurality of support nets, improving the working speed of assembling the support net, and when the support net is damaged, the ground nail is lifted by the crowbar, and the disassembly and replacement of the support net are completed, improving the maintenance speed of the support net. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the utility model;

[0019] Figure 2 It is a top view of the utility model;

[0020] Figure 3 It is a front view of the ground nail of the utility model;

[0021] Figure 4 It is a front view of the series connection mechanism of the utility model;

[0022] Figure 5 It is an enlarged view of the series connection mechanism of the utility model.

[0023] In the figure: 1, support net; 2, ground nail; 21, fin; 3, short groove; 31, sliding groove; 32, sliding groove; 33, square groove; 4, long groove; 5, series mechanism; 51, cross arm; 52, threaded rod; 53, gear; 54, toothed plate; 55, connecting rod; 56, clamping block; 57, sliding block; 58, sliding block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The utility model provides a technical scheme, please refer to Figure 1 And Figure 2 A kind of side slope support structure for soft rock subgrade blasting excavation, it include: support net 1 and ground nail 2, and ground nail 2 is evenly arranged in the four corners of support net 1, the outside both ends of ground nail 2 are provided with fin 21, and fin 21 is polished, and fin 21 can increase the stability when ground nail 2 is fixed support net 1, the outside both ends of support net 1 are provided with short groove 3, short groove 3 includes two groups of transverse grooves, and the inside of transverse groove is slidably connected between cross arm 51 and clamping block 56, and a plurality of series mechanism 5 is inserted into the inside of long groove 4, which can increase the stability of support net 1 in series, the outside both ends of support net 1 are provided with long groove 4, long groove 4 and short groove 3 are respectively two groups, and are respectively provided in the four edges of support net 1, and short groove 3 is equipped with series mechanism 5.

[0026] Please refer to Figure 3 、 Figure 4 And Figure 5 Series mechanism 5 includes cross arm 51, the inside of cross arm 51 is provided with screw groove for being threadedly connected with threaded rod 52, cross arm 51 can be driven by connecting rod 55 to clamping block 56, and cross arm 51 is square, can be limited by the inside of short groove 3, avoid rotating with threaded rod 52, threaded rod 52 can drive cross arm 51 to move by the transmission of gear 53, toothed plate 54 is connected with ground nail 2, and can be driven to lift by ground nail 2.

[0027] The inside of cross arm 51 is threadedly connected with threaded rod 52, the outside of threaded rod 52 is sleeved with gear 53, the outside of gear 53 is engagedly connected with toothed plate 54, the outside both ends of cross arm 51 are connected with connecting rod 55 by hinge, and the other end of connecting rod 55 is connected with clamping block 56 by hinge, the inside both ends of short groove 3 are evenly provided with sliding groove 31, and the inside of sliding groove 31 is slidably connected with sliding block 58.

[0028] The sliding block 58 is connected with the cross arm 51, the sliding groove 31 matches the sliding block 58, and the cross arm 51 can be guided to move linearly, the short groove 3 is internally provided with a sliding groove 32 at both ends, the sliding groove 32 is internally slidably connected with a sliding block 57, and the sliding block 57 is connected with the clamping block 56; the square groove 33 matches the sliding block 57, and the clamping block 56 can be guided to move linearly.

[0029] The short groove 3 is internally provided with a square groove 33, and the square groove 33 is slidably connected with the toothed plate 54; the square groove 33 is internally connected with the gear 53 through a bearing with a seat, and the square groove 33 can limit the toothed plate 54, so that the toothed plate 54 is always engaged with the gear 53; the bearing with a seat can support the gear 53.

[0030] The scheme first places multiple supporting nets 1 together, aligns the short groove 3 with the long groove 4, and then hammers the ground peg 2 into the ground to complete the slope protection of the soft rock roadbed;

[0031] When the ground peg 2 is hammered into the ground, the toothed plate 54 is lowered, the gear 53 is rotated, the cross arm 51 moves linearly, the clamping block 56 is driven out of the short groove 3 through the connecting rod 55, and the clamping block 56 is inserted into the long groove 4, thereby splicing multiple supporting nets 1 together;

[0032] When the slope of the soft rock roadbed is protected, the series mechanism 5 automatically connects multiple supporting nets 1 when the ground peg 2 fixes the supporting net 1, thereby increasing the stability of the overall supporting net 1, avoiding damage to a single supporting net 1 caused by impact and tearing, and simultaneously avoiding the need for additional operation steps when splicing multiple supporting nets 1, thereby improving the working speed of assembling the supporting net 1, and when the supporting net 1 is damaged, the ground peg 2 is lifted by the crowbar, and the supporting net 1 can be disassembled and replaced, thereby improving the maintenance speed of the supporting net 1.

[0033] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slope support structure for soft rock subgrade blasting excavation, comprising: Supporting net (1) and ground nail (2), and ground nail (2) is evenly arranged in the four corners of supporting net (1), characterized by: the both ends of the outside of the supporting net (1) are provided with short grooves (3), the both ends of the outside of the supporting net (1) are provided with long grooves (4), the inside of the short groove (3) is equipped with a series mechanism (5); The series mechanism (5) includes a cross arm (51), the inside of the cross arm (51) is threadedly connected with a threaded rod (52), the outside of the threaded rod (52) is sleeved with a gear (53), the outside of the gear (53) is engagedly connected with a toothed plate (54), the both ends of the outside of the cross arm (51) are hingedly connected with a connecting rod (55), and the other end of the connecting rod (55) is hingedly connected with a clamping block (56).

2. The slope support structure for soft rock subgrade blasting excavation according to claim 1, characterized in that: The both ends of the inside of the short groove (3) are evenly provided with sliding grooves (31), and the inside of the sliding groove (31) is slidably connected with a sliding block (58), and the sliding block (58) is connected with the cross arm (51).

3. The soft rock roadbed blasting excavation side slope supporting structure according to claim 1, characterized in that: The both ends of the inside of the short groove (3) are provided with sliding grooves (32), the inside of the sliding groove (32) is slidably connected with a sliding block (57), and the sliding block (57) is connected with the clamping block (56).

4. The soft rock roadbed blasting excavation side slope supporting structure according to claim 1, characterized in that: The inside of the short groove (3) is provided with a square groove (33), and the inside of the square groove (33) is slidably connected with the toothed plate (54), and the inside of the square groove (33) is connected with the gear (53) through a bearing with seat.

5. The soft rock roadbed blasting excavation with slope support structure according to claim 1, characterized in that: The both ends of the outside of the ground nail (2) are provided with fins (21), and the fins (21) are polished.

6. The soft rock roadbed blasting excavation with slope support structure according to claim 1, characterized in that: The short groove (3) includes two groups of transverse grooves, and the inside of the transverse groove is slidably connected between the cross arm (51) and the clamping block (56).

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