Protective device for trench excavation

Abstract

The utility model belongs to the technical field of trench excavation protection, and particularly relates to a protection device for trench excavation. Comprising a baffle which is vertically arranged, a plurality of fixing ring sets which are sequentially distributed from front to back are arranged on the side wall of the baffle, each fixing ring set comprises a plurality of fixing rings which are sequentially distributed from top to bottom, the same anchor nail is independently installed in all the fixing rings of each fixing ring set in a penetrating mode, and pull rods are hinged to the upper ends of the anchor nails; and the movable ends of all the pull rods are provided with locking assemblies for locking the pull rods on the ground. The baffle is supported and fixed through the two anchor nails which are distributed front and back, the lower end of the baffle is fixed in the land, and the upper end of the baffle is fixed to the ground outside the groove through traction of the pull rod, so that interference to operation of workers is avoided while the baffle is effectively supported.

Description

Technical Field

[0001] The utility model belongs to the technical field of trench excavation protection, in particular to a trench excavation protection device. Background Art

[0002] Trench excavation is a common operation in the process of water conservancy construction. Trench excavation involves the excavation of geological structures such as soil and rocks, which often forms a certain space, causing the soil on both sides of the trench to lose its original support and easily collapse. Especially in areas with poor geological conditions, loose soil or high water content, the risk of collapse during trench excavation is more significant. In order to ensure the construction safety of workers and prevent the soil on both sides of the trench from collapsing into the trench and causing harm to workers, baffles are often used in the prior art to support both sides of the trench.

[0003] These baffles are usually made of strong materials, such as steel plates or reinforced concrete slabs, and have a certain strength and stability. They are inserted or fixed vertically on both sides of the trench to form a barrier, effectively blocking the possibility of soil collapse. At the same time, in order to ensure the stability of the baffles, beams are usually set between the two baffles for support. These beams span between the trenches, providing additional support for the baffles to prevent them from tilting or collapsing due to soil pressure.

[0004] However, in actual use, this traditional protective device also has some shortcomings. First, the crossbeam is across the inside of the trench, which creates certain obstacles for workers to work. When workers are digging, cleaning, and other operations inside the trench, they need to bypass the crossbeam, which not only increases the difficulty of the workers' work, but also reduces work efficiency. Secondly, the existence of the crossbeam also limits the workers' space for movement, requiring workers to be careful during the operation to avoid collision with the crossbeam. Utility Model Content

[0005] The purpose of the utility model is to provide a protective device for trench excavation, which can maintain effective support for the baffle and avoid interference with workers' operations.

[0006] The protective device for trench excavation comprises a vertically arranged baffle, on the side wall of which are arranged a plurality of fixing ring groups distributed sequentially from front to back, each fixing ring group comprises a plurality of fixing rings distributed sequentially from top to bottom, and all the fixing rings of each fixing ring group are independently penetrated by the same anchor nail, the upper ends of the anchor nails are hinged with pull rods, and the movable ends of all the pull rods are provided with locking components for locking them to the ground.

[0007] Furthermore, there are two sets of fixing ring groups, and the two sets of fixing ring groups are distributed front and back.

[0008] Furthermore, each fixing ring group has two fixing rings, and the two fixing rings are distributed up and down.

[0009] Furthermore, the locking assembly includes a vertically arranged anchor rod, a connecting plate is fixed to the upper end of the anchor rod, locking pins are vertically arranged at the front and rear ends of the connecting plate, the anchor rod is located between the two locking pins, and the locking pins are independently provided with connecting rings, and the two connecting rings are respectively fixed to the movable ends of the two pull rods.

[0010] Furthermore, the hinged end of the pull rod is hinged to the upper end of the anchor nail through a collar, the connecting end of the pull rod is hinged to the outer ring of the collar and swings up and down, and the collar is independently sleeved on the upper end of the anchor nail.

[0011] Furthermore, the anchor nail comprises a top column, the collar is independently sleeved on the nail column, and a nail cap is fixed to the upper end of the nail column to prevent the collar from falling off.

[0012] Furthermore, two mutually parallel hinged plates are fixed on the outer ring of the collar, a hinged block is fixed on the hinged end of the pull rod, and the hinged block is hinged between the two hinged plates through a hinged column.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model supports and fixes the baffle plate by two anchor nails distributed front and back, the lower end of the baffle plate is fixed in the ground, and the upper end is fixed to the ground outside the groove by pulling by a pull rod, so that the baffle plate is effectively supported while avoiding interference with the workers' operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0017] Figure 3 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 4 This is a diagram of the use state of the utility model;

[0019] The names of the components in the figure are: 1, baffle 2, fixing ring 3, anchor nail 4, collar 5, hinged column 6, pull rod 7, locking nail 8, connecting plate 9, connecting ring 10, anchor rod. DETAILED DESCRIPTION

[0020] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0021] Example

[0022] A trench excavation protection device according to this embodiment, such as Figures 1 to 3 As shown, it includes a vertically arranged baffle 1, and vertical grooves are opened on the left and right side walls of the baffle 1, so that it can show better structural performance when subjected to force. Due to the existence of the vertical grooves, the baffle 1 can produce a certain degree of bending and deformation when subjected to external force, thereby absorbing and dispersing the external force and reducing the possibility of stress concentration and damage. Two groups of fixing ring groups distributed front and back are arranged on the side wall of the baffle 1, and each group of fixing ring groups includes two fixing rings 2 distributed up and down, and the same anchor nail 3 is independently installed in all the fixing rings 2 of each fixing ring group, that is to say, the same anchor nail 3 is installed in two fixing rings 2 adjacent to each other, so there are two anchor nails 3, and the lower ends of the anchor nails 3 pass through the fixing ring 2 located on the lower side and penetrate into the ground to initially support and fix the baffle 1, and the upper ends of the anchor nails 3 are hinged with pull rods 6, and the hinged ends of the pull rods 6 are hinged to the upper ends of the anchor nails 3 through the collars 4, and the connecting ends of the pull rods 6 are hinged to the outer rings of the collars 4 and swing up and down, and the collars 4 are independently sleeved on the upper ends of the anchor nails 3; the pull rods 6 can rotate along the anchor nails 3 through the collars 4. Two mutually parallel hinge plates are fixed on the outer ring of the collar 4, and a hinge block is fixed on the hinge end of the pull rod 6. The hinge block is hinged between the two hinge plates through the hinge column 5. A first hinge hole is provided on the hinge block, and a second hinge hole is provided on the hinge plate. The hinge column 5 is independently installed in the first hinge hole. The two ends of the hinge column 5 pass through the two second hinge holes respectively and are located on the outside of the hinge plate. Both ends of the hinge column 5 are provided with external threads, and nuts that are threadedly matched with the external threads are set. When in use, the pull rod 6 can not only rotate along the anchor nail 3, but also swing up and down. In this way, when the baffle 1 is much higher than the groove, the pull rod 6 can also tilt so that its active end is close to the ground. The purpose of rotating the pull rod 6 along the anchor nail 3 is to bring the active ends of the two pull rods 6 close to each other and lock them uniformly on the ground.

[0023] like Figure 3As shown, an anchor rod 10 independent of the two tie rods 6 is vertically arranged between the movable ends thereof, a connecting plate 8 is fixed to the upper end of the anchor rod 10, locking nails 7 are vertically arranged at the front and rear ends of the connecting plate 8, the anchor rod 10 is located between the two locking nails 7, and the locking nails 7 are each provided with a connecting ring 9, and the two connecting rings 9 are respectively fixed to the movable ends of the two tie rods 6. This section as a whole constitutes a locking assembly that simultaneously locks the movable ends of the two tie rods 6 to the ground. When in use, the movable ends of the two tie rods 6 are brought close to each other after the two tie rods 6 are rotated, and then the anchor rod 10 is nailed into the ground, and the two locking nails 7 are respectively passed through the two connecting rings 9 and nailed into the ground, so that the locking of the two tie rods 6 is completed at one time, which improves the work efficiency to a certain extent. At the same time, one anchor rod 10 can lock the two tie rods 6, which saves the cost of producing the anchor rod 10 to a certain extent.

[0024] like Figure 4 As shown, the lower end of the anchor nail 3 is inserted into the ground, and the upper end is pulled by the pull rod 6 to fix the upper and lower ends of the anchor nail 3, thereby maintaining support for the baffle 1; the traction force of the pull rod 6 is a lateral force, and a vertical upward force is required to pull out the anchor rod 10, so the anchor rod 10 will not be easily separated from the ground by the pulling force of the pull rod 6.

[0025] The anchor nail 3 includes a top column, and the ring 4 is independently mounted on the nail column. A nail cap is fixed to the upper end of the nail column to prevent the ring 4 from detaching. During installation, the ring 4 needs to be inserted from the lower end of the anchor nail 3 first, and then the anchor nail 3 is inserted into the fixing ring 2 from top to bottom until it passes through, and the anchor nail 3 is nailed into the ground through external tools or instruments.

[0026] During actual use, the baffle 1 is supported and fixed by two anchor nails 3 distributed front and back, and the upper ends of the anchor nails 3 are fixed to the ground outside the groove by pull rods 6, thereby ensuring effective support for the baffle 1. At the same time, the supporting components avoid the internal space of the hook groove, avoiding interference with workers' operations.

Claims

1. A trench excavation protection device, comprising a vertically arranged baffle (1), characterized in that: The side wall of the baffle (1) is provided with a plurality of fixing ring groups distributed in sequence from front to back, each fixing ring group comprises a plurality of fixing rings (2) distributed in sequence from top to bottom, all fixing rings (2) of each fixing ring group are independently penetrated with the same anchor nail (3), the upper end of each anchor nail (3) is hinged with a pull rod (6), and the movable ends of all the pull rods (6) are provided with locking components for locking them to the ground.

2. The trench excavation protection device according to claim 1, characterized in that: There are two sets of fixing ring groups, and the two sets of fixing ring groups are distributed front and back.

3. The trench excavation protection device according to claim 2, characterized in that: Each set of fixing rings has two fixing rings (2), and the two fixing rings (2) are distributed up and down.

4. The trench excavation protection device according to claim 3, characterized in that: The locking assembly comprises a vertically arranged anchor rod (10), a connecting plate (8) being fixed to the upper end of the anchor rod (10), locking pins (7) being vertically arranged at both the front and rear ends of the connecting plate (8), the anchor rod (10) being located between the two locking pins (7), the locking pins (7) being independently sleeved with connecting rings (9), and the two connecting rings (9) being respectively fixed to the movable ends of the two pull rods (6).

5. The trench excavation protection device according to claim 3, characterized in that: The hinged end of the pull rod (6) is hinged to the upper end of the anchor nail (3) through the collar (4), the connecting end of the pull rod (6) is hinged to the outer ring of the collar (4) and swings up and down, and the collar (4) is independently sleeved on the upper end of the anchor nail (3).

6. The trench excavation protection device according to claim 4, characterized in that: The anchor nail (3) comprises a top column, a collar (4) is independently sleeved on the nail column, and a nail cap is fixed at the upper end of the nail column to prevent the collar (4) from falling off.

7. The trench excavation protection device according to claim 5, characterized in that: Two mutually parallel hinged plates are fixed on the outer ring of the sleeve ring (4), and a hinged block is fixed on the hinged end of the pull rod (6), and the hinged block is hinged between the two hinged plates through a hinged column (5).

Images