Safety protection structure for trench excavation

Abstract

The utility model provides a safety protection structure for trench excavation, and relates to the technical field of engineering protection. The device comprises a plurality of anchor rods, the bottoms of the anchor rods are in a pointed cone shape, knocking blocks are arranged on the tops of the anchor rods, and the outer diameter of the knocking blocks is larger than that of the anchor rods; a first movable rod and a second movable rod are hinged to the anchor rod and located on the two sides of the anchor rod respectively, a connecting sleeve is arranged on the outer side of the anchor rod, one end of the connecting sleeve is connected to the second movable rod of the anchor rod in a screwed mode through threads, and the other end of the connecting sleeve is connected to the first movable rod of the anchor rod in a screwed mode through threads. The other end of the connecting sleeve is connected to the first movable rod of the other anchor rod in a screwed mode through threads.

Description

Technical Field

[0001] This application relates to the technical field of engineering protection, and in particular to a safety protection structure for trench excavation. Background Art

[0002] In trench excavation projects, safety protection is of crucial importance. Currently, common safety protection measures for trench excavation mainly involve setting up fences on the outer side of the trench and hanging warning signs on the fences. In this way, pedestrians are prevented from approaching or falling into the trench, thereby improving safety during the trench excavation process.

[0003] However, this method has problems such as a too simple structure and limited protection ability. That is, during use, the existing fences are prone to tipping over, thus triggering safety accidents. Moreover, in the case of poor ground flatness at the construction site, the installation operation of the existing fences is rather cumbersome, reducing the installation effect of the fences, and the overall stability is poor, making it difficult to provide sufficient safety guarantees. Utility Model Content

[0004] In order to improve the problems of complex installation and poor protection effect of existing protection equipment, this application provides a safety protection structure for trench excavation.

[0005] This application provides a safety protection structure for trench excavation, adopting the following technical solutions:

[0006] A safety protection structure for trench excavation includes a number of anchor rods. The bottom of the anchor rod is in a sharp cone shape, and a percussion block is provided at the top of the anchor rod. The outer diameter of the percussion block is larger than the outer diameter of the anchor rod. The first movable rod and the second movable rod are hinged to the anchor rod. The first movable rod and the second movable rod are respectively located on both sides of the anchor rod. A connecting sleeve is provided outside the anchor rod. One end of the connecting sleeve is screwed onto the second movable rod of one of the anchor rods through a thread, and the other end of the connecting sleeve is screwed onto the first movable rod of another anchor rod through a thread. A number of the anchor rods are arranged at intervals along the same straight line. The distance between adjacent two anchor rods is greater than the sum of the lengths of the first movable rod and the second movable rod, and the distance between adjacent two anchor rods is less than the sum of the lengths of the first movable rod, the second movable rod, and the connecting sleeve.

[0007] By adopting the above technical solution, a heavy hammer is used to strike the knocking block, so that the lower part of the anchor rod can be knocked into the ground, realizing the rapid fixation of the anchor rod on the ground. Then, the first movable rod and the second movable rod are turned upwards, and then the connecting sleeve is rotated so that the connecting sleeve can be screwed onto the first movable rod of another anchor rod. In this way, the first movable rods and the second movable rods on several anchor rods can be in a connected state, and several first movable rods and second movable rods can form a horizontal railing, and several anchor rods can form a vertical railing. The installation speed is fast, and a reliable safety protection function can be quickly formed.

[0008] Optionally, external threads are provided at one ends of the first movable rod and the second movable rod far from the hinge point, and the external threads are adapted to the internal threads of the connecting sleeve.

[0009] By adopting the above technical solution, it is ensured that the connecting sleeve can connect the second movable rod on one anchor rod and the first movable rod on another anchor rod.

[0010] Optionally, a pair of hook groups are provided on the outer wall of the anchor rod, and the pair of hook groups are symmetrically arranged on both sides of the anchor rod. Each hook group includes two hooks arranged at intervals in the vertical direction; two openings are provided on both the first movable rod and the second movable rod. When the first movable rod and the second movable rod are both attached to the outer wall of the anchor rod, the hooks are adaptively located in the openings; a wire mesh is provided between a hook group on one anchor rod and a hook group on another anchor rod. The wire mesh is located between the two anchor rods and below the first movable rod and the second movable rod.

[0011] By adopting the above technical solution, a wire mesh is hung between the four hooks of two anchor rods, improving the protection range and preventing people from passing through or falling below the first movable rod or the second movable rod.

[0012] Optionally, a columnar cavity is provided inside the anchor rod, and a slider is adaptively provided in the cavity. A pair of chutes communicating with the cavity are provided on the outer wall of the anchor rod. The chutes extend along the length direction of the anchor rod and are arranged in a staggered manner with the first movable rod and the second movable rod; a pair of support rods are further provided outside the anchor rod. One end of the support rod is connected to the movable block through a rotating seat, and the other end of the support rod is hinged with a nail plate, and the nail plate is nailed to the ground.

[0013] By adopting the above technical solution, after the anchor rod is driven into the ground, a pair of support rods are flipped so that the pair of support rods form an inverted V shape, and then the pair of support rods are pressed down until the nail plate contacts the ground, and then the nail plate is struck so that the nail claws on the nail plate can be driven into the ground. In this way, the preliminary fixation of the pair of support rods is achieved. Finally, anchor nails are driven into the nail plate to achieve the final fixation of the pair of support rods. In this way, the pair of inclined support rods can reliably support the anchor rod, improving the overall stability.

[0014] Optionally, the rotation direction of the pair of support rods is perpendicular to the rotation direction of the first movable rod and the second movable rod.

[0015] By adopting the above technical solution, the rotation of the first movable rod and the second movable rod does not interfere with the rotation of the pair of support rods, ensuring that the connection function of the first movable rod and the second movable rod and the bracing function of the pair of support rods can be reliably realized. In this way, the integrity during the trench excavation is effectively ensured.

[0016] Optionally, the outer wall of the slider fits with the inner wall of the cavity, and the slider slides up and down in the cavity in a matching manner. The rotating seat passes through the sliding groove and slides up and down in the sliding groove.

[0017] By adopting the above technical solution, through the sliding of the slider, the movement of the pair of support rods can be made smoother, and it is ensured that after the position of the support rod moves, the support rod can still rotate around the rotating seat.

[0018] Optionally, a limiting block is further provided in the cavity. The limiting block is located below the slider, and a spring is provided between the limiting block and the slider. The spring is used to support the slider.

[0019] By adopting the above technical solution, during the downward sliding of the slider, the limiting block remains stationary, and the spring will be compressed. The stability of the support rod after fixation is improved by the reaction force of the spring on the slider.

[0020] Optionally, a limiting rod is suspended in the cavity. Both ends of the limiting rod are provided with a bearing seat, and the limiting rod can rotate around its own axis between the two bearing seats; the limiting rod sequentially passes through the limiting block and the slider, the spring is sleeved outside the limiting rod, the limiting rod is threadedly connected with the limiting block, and the limiting rod is slidably connected with the slider.

[0021] By adopting the above technical solution, after rotating the limiting rod, the limiting block will move linearly along the axial direction of the limiting rod, so as to adjust the compression amount of the spring and ensure the support reliability of the support rod for the anchor rod.

[0022] Optionally, a transverse bevel gear is provided on the upper part of the limit rod, and a vertical bevel gear is provided on the outer wall of the anchor rod. The transverse bevel gear meshes with the vertical bevel gear. A rotating rod extending towards the outside of the anchor rod is provided in the middle of the vertical bevel gear. A handwheel is detachably provided on the rotating rod, and the handwheel is used for the rotating rod.

[0023] By adopting the above technical solution, the rotating rod is rotated through the handwheel, so as to realize the rotation of the vertical bevel gear and the transverse bevel gear, and further realize the rotation effect on the limit rod, ensuring that the position adjustment of the limit block is more convenient.

[0024] To sum up, the present application includes the following beneficial effects:

[0025] 1. A number of anchor rods are arranged at intervals, and the first movable rod and the second movable rod on adjacent two anchor rods are connected through a connecting sleeve to form a complete protection framework, and a hanging net is hung between adjacent two anchor rods, improving the protection effect of the protection framework. While ensuring reliable protection performance, the installation steps are reduced, and the installation effect is significantly improved.

[0026] 2. The anchor rod is provided with an inclined support through the movable and rotatable support rod, which can reliably fix the anchor rod under different terrain conditions, and further effectively improve the overall stability, preventing the situation of personnel accidentally entering the trench. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic perspective view of the present application;

[0028] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in

[0029] Figure 3 is the reference view of the assembled state of the present application;

[0030] Figure 4 is Figure 3 the enlarged structural schematic diagram at B in

[0031] Figure 5 is the internal structural cross-sectional view of the present application;

[0032] In the figure: 1. Anchor rod; 11. Hook; 12. Hanging net; 13. Cavity; 14. Limit rod; 15. Bearing seat; 16. Transverse bevel gear; 17. Vertical bevel gear; 18. Rotating rod; 19. Handwheel; 2. Knocking block; 3. First movable rod; 30. Opening; 4. Second movable rod; 5. Connecting sleeve; 6. Slide block; 7. Support rod; 71. Rotating seat; 72. Nail plate; 8. Limit block; 9. Spring. DETAILED DESCRIPTION OF THE INVENTION

[0033] The following is combined with the attached Figures 1-5A further detailed description of the present application is provided below.

[0034] Figure 1 is a schematic perspective view of the present application. Figure 2 is Figure 1 an enlarged schematic view of the structure at position A in Figure 1 and Figure 2 , a safety protection structure for trench excavation, comprising a plurality of anchor rods 1. The bottom of the anchor rod 1 is in a sharp cone shape, and a percussion block 2 is provided at the top of the anchor rod 1. The outer diameter of the percussion block 2 is larger than the outer diameter of the anchor rod 1. In this way, one person holds the anchor rod 1 and the other person hammers the percussion block 2, and the lower part of the anchor rod 1 can be quickly nailed into the ground, and it can effectively prevent hitting the hand of the person, so as to safely and quickly fix the anchor rod 1.

[0035] Figure 3 is a reference view of the assembled state of the present application. Figure 4 is Figure 3 an enlarged schematic view of the structure at position B in Figure 3 and Figure 4 and in combination with Figure 1 , after a plurality of anchor rods 1 are fixed at intervals in a straight line direction, the second movable rod 4 of the previous anchor rod 1 is rotated upward to a horizontal state, and at the same time, the first movable rod 3 of the next anchor rod 1 is rotated upward to a horizontal state. At this time, the distance between two adjacent anchor rods 1 is greater than the sum of the lengths of the first movable rod 3 and the second movable rod 4, and the distance between two adjacent anchor rods 1 is less than the sum of the lengths of the first movable rod 3, the second movable rod 4 and the connecting sleeve 5. At this time, the connecting sleeve 5 on the second movable rod 4 of the previous anchor rod 1 is rotated, so that one end of the connecting sleeve 5 is screwed on the second movable rod 4 of the previous anchor rod 1, and the other end of the connecting sleeve 5 is screwed on the first movable rod 3 of the next anchor rod 1. That is to say, external threads are provided on both the first movable rod 3 and the second movable rod 4, and internal threads adapted to the external threads are provided on the inner wall of the connecting sleeve 5. In this way, a plurality of first movable rods 3 and second movable rods 4 are adjacent to each other in sequence to form a protection frame. Specifically, a plurality of first movable rods 3 and second movable rods 4 form horizontal railings, and a plurality of anchor rods 1 form vertical railings. Through the cooperation of the vertical railings and the horizontal railings, the protection effect is quickly and reliably achieved, and people are prevented from accidentally entering the trench.

[0036] A pair of hook groups 11 are provided on the outer wall of the anchor rod 1. The pair of hook groups 11 are symmetrically arranged on both sides of the anchor rod 1. Each hook group 11 includes two hooks 11 arranged at intervals in the vertical direction. Two openings 30 are provided on both the first movable rod 3 and the second movable rod 4. When the first movable rod 3 and the second movable rod 4 are both in contact with the outer wall of the anchor rod 1, the hooks 11 are adaptively located within the openings 30, ensuring that there is no mutual interference between the hooks 11, the first movable rod 3, and the second movable rod 4. Further, after the protective frame is assembled, a wire mesh 12 can be hung between the two anchor rods 1, and the four corners of the wire mesh 12 are respectively fixed by a hook 11. In this way, under the shielding effect of the wire mesh 12, it can effectively prevent people from drilling into the inside of the protective frame from below the first movable rod 3 or the second movable rod 4, significantly improving the protection effect. Moreover, the method of installing the wire mesh 12 by the hooks 11 is relatively simple, which can improve the overall installation speed and facilitate rapid installation in case of emergency.

[0037] See Figure 1 and Figure 4 , a columnar cavity 13 is provided inside the anchor rod 1. A slider 6 is adaptively provided in the cavity 13. A pair of chutes communicating with the cavity 13 are provided on the outer wall of the anchor rod 1. The chutes extend along the length direction of the anchor rod 1 and are arranged in a staggered manner with the first movable rod 3 and the second movable rod 4. That is to say, the rotation of the first movable rod 3 and the second movable rod 4 will not cover the chutes, and the outer wall of the slider 6 is in contact with the inner wall of the chutes. In this way, the slider 6 can adaptively slide up and down in the chutes without any crosstalk in the horizontal direction. A pair of support rods 7 are also provided outside the anchor rod 1. One end of the support rod 7 is connected to the movable block through a rotating seat 71, and the other end of the support rod 7 is hinged with a nail plate 72. Under the connection of the rotating seat 71, the support rod 7 can rotate around the rotating seat 71. In the initial state, the support rod 7 is in a hanging state, and the nail plate 72 is in contact with the outer wall of the anchor rod 1. After the anchor rod 1 is nailed into the ground, the anchor rod 1 is in a preliminary fixed state. At this time, the support rod 7 is rotated upward so that the pair of support rods 7 can form an inverted V shape. In this way, the distance between the support rod 7 and the ground will be enlarged, and thus the pair of support rods 7 and the slider 6 can be pulled downward. After the nail plate 72 comes into contact with the ground again, the nail plate 72 is struck so that the shorter nail claws at the bottom of the nail plate 72 can be nailed into the ground, and then a longer anchor nail is nailed into the installation hole on the nail plate 72 so that the nail plate 72 is reliably fixed on the ground. At this time, the pair of support rods 7 can form a bracing effect on the anchor rod 1, thereby significantly improving the stability of the anchor rod 1. Moreover, according to different terrains, the descending height of the slider 6 and the rotation angle of the support rod 7 can be reasonably selected to ensure that the anchor rod 1 can be reliably reinforced.

[0038] The rotation directions of a pair of support rods 7 are perpendicular to the rotation directions of the first movable rod 3 and the second movable rod 4. In this way, the supporting effect of the support rods 7 on the anchor rod 1 and the connecting effect of the first movable rod 3 and the second movable rod 4 on the anchor rod 1 do not interfere with each other, ensuring that the protection frame can be installed quickly and stably. A limiting block 8 and a limiting rod 14 are also provided in the accommodating cavity. The limiting block 8 is located below the sliding block 6, and a spring 9 is provided between the limiting block 8 and the sliding block 6. The limiting rod 14 is suspended in the cavity 13 through a pair of bearing seats 15, that is, a bearing seat 15 is provided in both the upper part and the lower part of the cavity 13, and the two ends of the limiting rod 14 are correspondingly inserted into the two bearing seats 15. In this way, the limiting rod 14 can rotate around its own axis under the supporting action of the two bearing seats 15. The limiting rod 14 sequentially passes through the limiting block 8 and the sliding block 6, the spring 9 is sleeved outside the limiting rod 14, the limiting rod 14 is threadedly connected with the limiting block 8, and the limiting rod 14 is slidably connected with the sliding block 6. In this way, the limiting rod 14 does not affect the normal sliding of the sliding block 6 and can also play a role in limiting the sliding block 6, ensuring that the sliding block 6 can slide up and down in the cavity 13.

[0039] Figure 5 is a cross-sectional view of the internal structure of the present application. Refer to Figure 5 and in combination with Figure 4 , a horizontal bevel gear 16 is provided on the upper part of the limiting rod 14, a vertical bevel gear 17 is provided on the outer wall of the anchor rod 1, the horizontal bevel gear 16 and the vertical bevel gear 17 are meshed with each other, a rotating rod 18 extending towards the outside of the anchor rod 1 is provided in the middle of the vertical bevel gear 17, the end of the rotating rod 18 located outside the anchor rod 1 is hexagonal, and a handwheel 19 is detachably provided on the rotating rod 18. When the handwheel 19 is not installed on the rotating rod 18, the length of the rotating rod 18 protruding from the anchor rod 1 is short and does not affect the rotation of the first movable rod 3, the second movable rod 4 or the support rod 7, and does not interfere with the overall assembly of the protection frame. When the protection frame is assembled and the support rod 7 is in a diagonal bracing state, the handwheel 19 can be installed on the rotating rod 18, and the rotating rod 18 can be driven by rotating the handwheel 19. Since the rotating rod 18 is connected to the vertical bevel gear 17, and the vertical bevel gear 17 is meshed with the horizontal bevel gear 16, the vertical bevel gear 17 and the horizontal bevel gear 16 can rotate synchronously under the drive of the rotating rod 18, thereby realizing the rotation of the limiting rod 14. Since the limiting block 8 is threadedly connected with the limiting rod 14, and the outer wall of the limiting block 8 is attached to the inner wall of the cavity 13, when the limiting rod 14 rotates, the limiting block 8 can move up and down along the length direction of the limiting rod 14. In this way, the distance between the limiting block 8 and the sliding block 6 becomes smaller. At the same time, the spring 9 will be in a compressed state, and the compressed spring 9 will form a reaction force on the sliding block 6, so that the sliding block 6 will not move up and down, thereby improving the diagonal bracing stability of the support rod 7 on the anchor rod 1, ensuring that the protection frame can be stably installed on the ground and preventing people from straying into the trench, and improving the overall safety.

[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A safety protection structure for trench excavation, characterized in that, It includes a number of anchor rods (1), the bottom of the anchor rod (1) is in a sharp cone shape, a percussion block (2) is provided at the top of the anchor rod (1), and the outer diameter of the percussion block (2) is larger than the outer diameter of the anchor rod (1). A first movable rod (3) and a second movable rod (4) are hinged on the anchor rod (1). The first movable rod (3) and the second movable rod (4) are respectively located on both sides of the anchor rod (1). A connecting sleeve (5) is provided outside the anchor rod (1). One end of the connecting sleeve (5) is screwed onto the second movable rod (4) of one of the anchor rods (1) through threads, and the other end of the connecting sleeve (5) is screwed onto the first movable rod (3) of another anchor rod (1) through threads. A number of the anchor rods (1) are arranged at intervals along the same straight line. The distance between two adjacent anchor rods (1) is greater than the sum of the lengths of the first movable rod (3) and the second movable rod (4), and the distance between two adjacent anchor rods (1) is less than the sum of the lengths of the first movable rod (3), the second movable rod (4) and the connecting sleeve (5).

2. The safety protection structure for trench excavation according to claim 1, wherein, External threads are provided at the ends of the first movable rod (3) and the second movable rod (4) far from the hinge point, and the external threads are adapted to the internal threads of the connecting sleeve (5).

3. The safety protection structure for trench excavation according to claim 1, wherein, A pair of hook (11) groups are provided on the outer wall of the anchor rod (1). A pair of the hook (11) groups are symmetrically arranged on both sides of the anchor rod (1). Each hook (11) group includes two hooks (11) arranged at intervals in the vertical direction. Two openings (30) are provided on both the first movable rod (3) and the second movable rod (4). When the first movable rod (3) and the second movable rod (4) are both attached to the outer wall of the anchor rod (1), the hooks (11) are adaptively located in the openings (30). A wire mesh (12) is provided between a hook (11) group on one anchor rod (1) and a hook (11) group on another anchor rod (1). The wire mesh (12) is located between the two anchor rods (1), and the wire mesh (12) is located below the first movable rod (3) and the second movable rod (4).

4. A safety protection structure for trench excavation according to claim 1, characterized in that, A columnar cavity (13) is provided inside the anchor rod (1). A slider (6) is adaptively provided in the cavity (13). A pair of chutes communicating with the cavity (13) are provided on the outer wall of the anchor rod (1). The chutes extend along the length direction of the anchor rod (1) and are arranged in a dislocation manner with the first movable rod (3) and the second movable rod (4). A pair of support rods (7) are further provided outside the anchor rod (1). One end of the support rod (7) is connected to the slider through a rotating seat (71), and the other end of the support rod (7) is hinged with a nail plate (72), and the nail plate (72) is nailed to the ground.

5. A trench excavation safety protection structure according to claim 4, characterized in that, The rotation directions of a pair of the support rods (7) are perpendicular to the rotation directions of the first movable rod (3) and the second movable rod (4).

6. The safety protection structure for trench excavation according to claim 4, wherein, The outer wall of the slider (6) fits against the inner wall of the cavity (13), and the slider (6) slides up and down adaptively within the cavity (13). The rotating seat (71) passes through the sliding groove and slides up and down within the sliding groove.

7. A trench excavation safety protection structure according to claim 6, characterized in that, A limiting block (8) is further provided within the cavity (13). The limiting block (8) is located below the slider (6). A spring (9) is provided between the limiting block (8) and the slider (6), and the spring (9) is used to support the slider (6).

8. A safety protection structure for trench excavation according to claim 7, characterized in that, A limiting rod (14) is suspended within the cavity (13). A bearing seat (15) is provided at each end of the limiting rod (14), and the limiting rod (14) can rotate about its own axis between the two bearing seats (15); The limiting rod (14) sequentially passes through the limiting block (8) and the slider (6). The spring (9) is sleeved outside the limiting rod (14). The limiting rod (14) is threadedly connected to the limiting block (8), and the limiting rod (14) is slidably connected to the slider (6).

9. The safety protection structure for trench excavation according to claim 8, characterized in that, A horizontal bevel gear (16) is provided at the upper part of the limiting rod (14). A vertical bevel gear (17) is provided on the outer wall of the anchor rod (1). The horizontal bevel gear (16) meshes with the vertical bevel gear (17). A rotating rod (18) extending towards the outside of the anchor rod (1) is provided in the middle of the vertical bevel gear (17). A handwheel (19) is detachably provided on the rotating rod (18), and the handwheel (19) is used for the rotating rod (18).

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