Movable protective shed for earth-rock blasting
By installing height-adjustable pulleys and brake pads on the support legs of the protective canopy, the problem of the protective canopy tilting on uneven ground is solved, ensuring explosion-proof strength and stability, and enabling rapid splicing and space expansion of multiple protective canopies.
Patent Information
- Application Number
- CN202520786889.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Existing earthwork blasting protection sheds are difficult to keep level on uneven ground, resulting in reduced blast protection strength.
By installing height-adjustable pulleys and brake pads on the support legs, combined with a ruler and limit device, the protective canopy is kept level on uneven ground. Multiple protective canopies can be quickly spliced together using telescopic plates and mortise and tenon joints.
It achieves stability and explosion-proof strength of the protective shed on different terrains, expands the scope of application, and improves the space utilization rate of the protected area.
Smart Images

Figure CN223925626U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective shed technology, specifically to a mobile protective shed for earthwork blasting. Background Technology
[0002] Mobile protective sheds for earthmoving and blasting are safety protection facilities designed specifically for open-air blasting operations. They are mainly used to protect personnel and equipment from flying rocks, shock waves, and blast fragments generated by blasting. Through high-strength materials, flexible deployment, and strict safety standards, they have become an indispensable safety barrier in dynamic blasting operations.
[0003] Existing earthwork blasting projects are usually not in the same area, and existing protective sheds are limited by their own structural characteristics and are difficult to adapt to different scenarios. When the ground is depressed or raised but there is no better place to deploy the protective shed, the protective shed may tilt, which will affect the blast resistance of the protective shed. Utility Model Content
[0004] The purpose of this utility model is to provide a mobile protective shed for earthwork blasting in order to solve the above problems. When the road surface is uneven, the height of the support legs in the recessed area can be adjusted so that the height of the pulleys in the individual support legs can be adjusted so that the product as a whole can be kept horizontal and avoid tilting due to uneven road surface, which would affect the explosion-proof strength.
[0005] This utility model achieves the above objectives through the following technical solutions:
[0006] A mobile protective shed for earth and rock blasting includes: two support plates, a telescopic plate fixedly installed between the two support plates near the top, side support legs fixedly installed on both sides of the bottom of the two support plates, an inner support leg fixedly installed in the middle of the bottom of the two support plates, and an explosion-proof net fixedly installed between the side support legs and the inner support legs.
[0007] Each of the multiple side support legs and inner support legs has a placement groove on its lower inner side in pairs. Each of the multiple placement grooves has a lifting slide groove on both sides of its inner wall. Each of the multiple lifting slide grooves has a slider that is slidably arranged between each pair of opposite sides. Each of the multiple sliders has a snap-fit plate fixedly arranged between them. Each of the multiple snap-fit plates has a lower connecting plate fixedly arranged on its bottom side. Each of the multiple lower connecting plates has a C-shaped plate that is rotatably arranged on its bottom side. Each of the multiple C-shaped plates has a pulley that is rotatably arranged on its lower inner side.
[0008] Furthermore, the openings of the plurality of C-shaped plates face downwards, and the top side of the C-shaped plates is rotatably disposed on the bottom side of the lower connecting plate.
[0009] Further, the C-shaped plate is hingedly arranged with brake pads on the inner side of the plate, the brake pads are arranged above the pulley, and the side support legs and the inner support legs are fixedly arranged with scale rulers on opposite sides of each of the two.
[0010] Further, the clamping plates are rotatably arranged with through rotating rods on opposite sides of each of the two, and the through rotating rods are fixedly arranged with adjusting bolts on opposite sides of each of the two.
[0011] Further, the through rotating rods are slidably arranged with first limiting discs on opposite sides of each of the two, and the first limiting discs are fixedly arranged with second limiting discs on opposite sides of each of the two.
[0012] Further, the through rotating rods are fixedly arranged with two L-shaped plates on the side of the rod body close to the first limiting disc on opposite sides of each of the two, and the through rotating rods are slidably arranged in the inner side of the first limiting disc.
[0013] Further, the placing grooves are longitudinally arranged with a plurality of clamping blocks on both sides of the inner side of the grooves, the clamping blocks are fixedly arranged with limiting blocks on opposite sides of each of the two in the transverse direction, and the clamping blocks are arranged with limiting grooves between opposite sides of each of the two in the longitudinal direction.
[0014] Further, the first limiting discs and the inner walls of the placing grooves are in contact, and the first limiting discs are slid in the longitudinal direction between the limiting blocks, and the second limiting discs are slid in the longitudinal direction between the clamping blocks.
[0015] Further, the side support legs and the inner support legs are fixedly arranged with explosion-proof layers on opposite sides of each of the two in the front-rear direction, and the side support legs are arranged with mortise and tenon grooves on opposite sides of each of the two in the front-rear direction.
[0016] Further, the telescopic plate is fixedly arranged with a telescopic rod on the bottom side of the plate, the telescopic rod is fixedly arranged with a connecting ring on the rear side of the rod, the connecting ring is connected to the telescopic plate on the top side of the ring, and the fixed sides of the telescopic plate and the telescopic rod are arranged in the front one of the two support plates and are connected to the rear one of the two support plates on the outwardly extending side.
[0017] In summary, the beneficial effects of the present application are that the height of the pulley inside the side support legs and the inner support legs can be adjusted, so that the product can adapt to different terrains in earthwork blasting engineering, increase the applicable range of the product, avoid the decrease in explosion-proof strength caused by the inclination of the protective shed due to the influence of the ground, and increase the area inside the product and enable multiple products to be quickly connected together through the telescopic plate and the mortise and tenon groove, thereby improving the space for earthwork blasting protection. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.
[0019] Figure 1 is the front view of the present application;
[0020] Figure 2 is the side view of the present application close to the telescopic plate shaft;
[0021] Figure 3 is the side view of the present application close to the protection layer shaft;
[0022] Figure 4 is the enlarged view of A of the present application; Figure 4
[0023] Figure 5 is the side view of the side support leg shaft of the present application;
[0024] Figure 6 is the enlarged view of B of the present application; Figure 5
[0025] Figure 7 is the side view of the lower connecting plate close to the pulley shaft of the present application;
[0026] Figure 8 is the side view of the lower connecting plate close to the clamping plate shaft of the present application.
[0027] The following is the explanation of the reference signs:
[0028] 1, support plate; 2, telescopic plate; 3, side support leg; 4, inner support leg; 5, explosion-proof layer; 6, explosion-proof net; 7, telescopic rod; 8, connecting ring; 9, mortise and tenon slot; 10, placing groove; 11, scale; 12, lifting sliding groove; 13, limiting groove; 14, clamping block; 15, limiting block; 16, clamping plate; 17, through rotating rod; 18, adjusting bolt; 19, first limiting disc; 20, second limiting disc; 21, L-shaped plate; 22, sliding block; 23, lower connecting plate; 24, C-shaped plate; 25, pulley; 26, brake pad. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0030] Referring to Figures 1-8 As shown in the utility model provides earthwork blasting mobile protective shed, include: two support plate 1, two support plate 1 between fixedly arranged with expansion plate 2, two support plate 1 bottom side both sides are fixedly provided with side support leg 3, two support plate 1 bottom side middle are fixedly provided with inner support leg 4, multiple side support leg 3 and inner support leg 4 between are fixedly provided with explosion-proof net 6, multiple side support leg 3 and inner support leg 4 two two front and back opposite sides are fixedly provided with explosion-proof layer 5, multiple side support leg 3 front and back two two opposite sides are fixedly provided with mortise and tenon groove 9 outside;
[0031] Adopt the above technical scheme, by two support plate 1 to the structure is supported and fixed in upper part, and by the expansion plate 2 between two support plate 1, the space inside can be adjusted before and after, change the size of internal space, by side support leg 3 to support plate 1 below both sides are supported, by inner support leg 4 to support plate 1 below the middle position is supported, by explosion-proof net 6 to the inside space is protected, by explosion-proof layer 5 to the outside of side support leg 3 and inner support leg 4 is protected, avoid the fragment produced by earthwork blasting to cause damage to side support leg 3 and inner support leg 4, by the mortise and tenon groove 9 outside of side support leg 3, it is convenient for two or more products between splicing and using, increase the range of product protection.
[0032] Referring to Figures 1-8 As shown in the utility model provides earthwork blasting mobile protective shed, include: two support plate 1, two support plate 1 between fixedly arranged with expansion plate 2, two support plate 1 bottom side both sides are fixedly provided with side support leg 3, two support plate 1 bottom side middle are fixedly provided with inner support leg 4, multiple side support leg 3 and inner support leg 4 between are fixedly provided with explosion-proof net 6, multiple side support leg 3 and inner support leg 4 two two front and back opposite sides are fixedly provided with explosion-proof layer 5, multiple side support leg 3 front and back two two opposite sides are fixedly provided with mortise and tenon groove 9 outside;
[0033] In use, the lifting slide 12, clamping block 14, and limiting block 15 are supported by the placement groove 10. The two sliders 22 slide on the two lifting slides 12 inside the placement groove 10, so that the locking plate 16 between the two sliders 22 slides longitudinally inside the placement groove 10. The pulley 25 and the locking plate 16 are connected together by the lower connecting plate 23 and the C-shaped plate 24, so that the locking plate 16 lifts and lowers the pulley 25 at the same time, and the height of the pulley 25 can be adjusted to adapt the product to different scenarios. The downward opening of the C-shaped plate 24 provides space for the sliding of the pulley 25 and the brake pad 26. The scale 11 ensures that when the product is retracted, the height of the pulley 25 in the side support leg 3 and the inner support leg 4 is consistent, which is convenient for the next use.
[0034] See Figures 1-8 As shown, each of the multiple snap-fit plates 16 has a through-rotating rod 17 rotatably mounted on each opposite side of the front and rear. Each of the multiple through-rotating rods 17 has an adjusting bolt 18 fixedly mounted on each opposite side of the front and rear. Each of the multiple through-rotating rods 17 has a first limiting plate 19 slidably mounted on each opposite side of the front and rear. Each of the multiple first limiting plates 19 has a second limiting plate 20 fixedly mounted on each opposite side of the front and rear, near the first limiting plate 19. Two L-shaped plates 21 are fixedly mounted on the side of each of the multiple through-rotating rods 17 that is opposite to the front and rear and close to the first limiting plate 19. The through-rotating rod 17 is slidably disposed inside the multiple first limiting discs 19. Several clamping blocks 14 are longitudinally arranged on both sides of the inner side of the multiple placement slots 10. Limiting blocks 15 are fixedly arranged on each of the two opposite sides of the clamping blocks 14 in the horizontal direction. Limiting slots 13 are opened between the two opposite sides of the clamping blocks 14 in the vertical direction. The multiple first limiting discs 19 are in contact with the inner wall of the placement slots 10, and the first limiting discs 19 slide longitudinally between the multiple limiting blocks 15. The multiple second limiting discs 20 slide longitudinally between the multiple clamping blocks 14.
[0035] Using the above embodiment, the L-shaped plate 21, which passes through the shaft of the rotating rod 17, is engaged between the two longitudinal clamping blocks 14 and the limiting blocks 15. When the adjusting bolt 18 adjusts the position of the rotating rod 17 inside the first limiting plate 19, the position of the L-shaped plate 21 is changed, thus changing the position of the L-shaped plate 21, the two longitudinal clamping blocks 14, and the limiting blocks 15. When the adjusting bolt 18 pushes the rotating rod 17 inward, the L-shaped plate 21, the clamping blocks 14, and the limiting blocks 15 are engaged. Pulling it outward cancels the contact and the engagement is no longer achieved. The limiting groove 13 formed between the clamping blocks 14 and the limiting blocks 15 longitudinally engages the L-shaped plate 21, preventing it from rising or falling. The groove formed between the clamping blocks 14 and the limiting blocks 15 laterally limits the first limiting plate 19 and the second limiting plate 20, ensuring that the two limiting plates can only rise and fall internally, thus ensuring the stability of the product.
[0036] See Figures 1-8 As shown, a telescopic rod 7 is fixedly installed on the bottom side of the telescopic plate 2, and a connecting ring 8 is fixedly installed on the rear side of the telescopic rod 7. The top side of the connecting ring 8 is connected to the telescopic plate 2. The fixed side of the telescopic plate 2 and the telescopic rod 7 are both located in the front one of the two support plates 1, and the outwardly extending side is connected to the rear one of the two support plates 1.
[0037] In use, the telescopic rod 7 is connected to the connecting ring 8 on the rear side, so that when the telescopic plate 2 needs to be adjusted, the telescopic rod 7 can be operated to drive the telescopic plate 2 to unfold. This avoids the difficulty in adjustment caused by the height of the telescopic plate 2. In addition, the telescopic rod 7 and the telescopic plate 2 extend outward on the same side, which also makes it easy to operate the telescopic plate 2 through the connecting ring 8.
[0038] Using the above structure, when this product is needed, the staff first surveys the location where it will be placed and moves it to a suitable position. When the ground is uneven, the support leg below ground level is pulled out from the inside by adjusting the bolt 18 to extend the through-rotating rod 17. At this time, the L-shaped plate 21 disengages from the limiting groove 13 between the two clamping blocks 14. Due to gravity, the first limiting plate 19 and the second limiting plate 20 fall downwards between the clamping block 14 and the limiting block 15, causing the pulley 25 to contact the ground and stop falling. Then, the through-rotating rod 17 is rotated by adjusting the bolt 18, so that the inner L-shaped plate 21 is in a water-filled position. Once the product is in a level position, push the through-rotating rod 17 inwards, causing it to slide inside the first limiting plate 19 until the L-shaped plate 21 is re-engaged between the two clamping blocks 14 and the limiting block 15. This completes the fixation of the support leg, ensuring the product is level and preventing tilting due to ground depressions, which could reduce the explosion-proof strength. The tenon and mortise grooves 9 on the outer sides of the side support legs 3 allow two products to be connected, enabling the splicing of multiple products and increasing the explosion-proof area. Simultaneously, the telescopic plate 2 between the two support plates 1 increases the distance between the front and rear of the support legs, improving the internal space of the product and accommodating more people.
[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A mobile protective shed for earthmoving and blasting, characterized in that, include: Two support plates (1), a telescopic plate (2) is fixedly installed between the two support plates (1) at the top, side support legs (3) are fixedly installed on both sides of the bottom of the two support plates (1), and inner support legs (4) are fixedly installed in the middle of the bottom of the two support plates (1). Explosion-proof nets (6) are fixedly installed between the multiple side support legs (3) and inner support legs (4). Each of the multiple side support legs (3) and inner support legs (4) has a placement groove (10) on its lower inner side in pairs. Each of the multiple placement grooves (10) has a lifting slide groove (12) on both sides of its inner wall. Each of the multiple lifting slide grooves (12) has a slider (22) slidably arranged between each pair of opposite sides. Each of the multiple sliders (22) has a snap-fit plate (16) fixedly arranged between each of the multiple snap-fit plates (16). Each of the multiple snap-fit plates (16) has a lower connecting plate (23) fixedly arranged on its bottom side. Each of the multiple lower connecting plates (23) has a C-shaped plate (24) rotatably arranged on its bottom side. Each of the multiple C-shaped plates (24) has a pulley (25) rotatably arranged on its lower inner side in pairs.
2. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: The openings of the multiple C-shaped plates (24) are downward, and the top side of the C-shaped plates (24) is rotatably disposed on the bottom side of the lower connecting plate (23).
3. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: Brake pads (26) are hinged to the upper inner side of the multiple C-shaped plates (24). The brake pads (26) are located above the pulleys (25). Scales (11) are fixedly installed on opposite sides of the multiple side support legs (3) and inner support legs (4).
4. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: Each of the multiple snap-fit plates (16) has a through-rotating rod (17) rotatably mounted on each of the opposite sides of the front and rear sides, and each of the multiple through-rotating rods (17) has an adjusting bolt (18) fixedly mounted on each of the opposite sides of the front and rear sides.
5. The mobile protective shed for earth and rock blasting according to claim 4, characterized in that: Each of the multiple through-rotor rods (17) has a first limiting disc (19) slidably arranged on opposite sides of each pair of front and rear, and each of the multiple first limiting discs (19) has a second limiting disc (20) fixedly arranged on opposite sides of each pair of front and rear.
6. The mobile protective shed for earth and rock blasting according to claim 5, characterized in that: Two L-shaped plates (21) are fixedly installed on the opposite sides of the multiple through-rotor rods (17) and on the side closer to the first limiting plate (19). The multiple through-rotor rods (17) are slidably arranged inside the multiple first limiting plates (19).
7. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: A plurality of clamping blocks (14) are longitudinally arranged on both sides of the inner side of the plurality of placement slots (10). Limiting blocks (15) are fixedly arranged on each pair of opposite sides of the plurality of clamping blocks (14) in the horizontal direction. Limiting grooves (13) are opened between each pair of opposite sides of the plurality of clamping blocks (14) in the vertical direction.
8. The mobile protective shed for earth and rock blasting according to claim 6, characterized in that: Multiple first limiting discs (19) are in contact with the inner wall of the placement groove (10), and the first limiting discs (19) slide longitudinally between multiple limiting blocks (15), while multiple second limiting discs (20) slide longitudinally between multiple clamping blocks (14).
9. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: Each of the multiple side support legs (3) and inner support legs (4) is fixedly provided with an explosion-proof layer (5) on opposite sides of each pair of front and back, and each of the multiple side support legs (3) is provided with a tenon groove (9) on the outer side of opposite sides of each pair of front and back.
10. The mobile protective shed for earth and rock blasting according to claim 1, characterized in that: A telescopic rod (7) is fixedly installed on the bottom side of the telescopic plate (2), and a connecting ring (8) is fixedly installed on the rear side of the telescopic rod (7). The top side of the connecting ring (8) is connected to the telescopic plate (2). The fixed side of the telescopic plate (2) and the telescopic rod (7) are both located on the front one of the two support plates (1), and the side extending outward is connected to the rear one of the two support plates (1).