Protective device for trench excavation

Abstract

The utility model discloses a protective device for trench excavation, and relates to the technical field of safety devices for trench construction, the protective device comprises a first baffle and a second baffle which are arranged in parallel, the first baffle is vertically provided with a plurality of first support columns, the second baffle is vertically provided with a plurality of second support columns, and the first support columns and the second support columns are arranged in parallel. The center axis of each first supporting column is collinear with the center axis of the corresponding second supporting column, the shortest distance between the first supporting columns and the second supporting columns which are coaxial can be changed, the limiting columns are inserted into the first through holes and the second through holes, the two limiting plates are fixedly connected in a threaded mode, and therefore the limiting plates can be fixed. Therefore, the distance between the first baffle and the second baffle is accurately adjusted, and the excavation requirements of grooves with different depths and widths are met.

Description

Technical Field

[0001] The utility model relates to the technical field of safety devices for trench construction, in particular to a protective device for trench excavation. Background Art

[0002] On urban main roads and municipal roads, the upper width of the trench allowed for excavation is usually small, and the trench slope coefficient is usually small, so the earth is prone to landslides or collapses. In the existing trench construction process, retaining boards are usually used as temporary retaining devices. Retaining boards are usually made of steel plates or wooden boards and are set along the edge of the trench to temporarily fix the earth and prevent earth collapse and landslides. However, the height and length of the retaining boards are usually fixed, so they are limited in actual application and cannot flexibly adapt to excavation areas of various shapes and sizes. Utility Model Content

[0003] 1) Technical issues solved

[0004] The utility model provides a protective device for trench excavation, so as to solve the problem that the existing safety device for trench construction cannot adapt to excavation areas of various shapes and sizes.

[0005] 2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for trench excavation, comprising two parallel first baffles and a second baffle, a plurality of first support columns are vertically arranged on the first baffle, a plurality of second support columns are vertically arranged on the second baffle, and the central axis of each of the first support columns is colinear with the central axis of one of the second support columns, and the shortest distance between the coaxial first support columns and the second support columns can be changed.

[0007] Furthermore, the inner diameter of each of the first support columns is greater than the outer diameter of each of the second support columns, and any one of the first support columns is movably sleeved on the coaxial second support column.

[0008] Furthermore, each of the first support columns is symmetrically provided with first through holes, and each of the second support columns is symmetrically provided with multiple rows of second through holes.

[0009] Furthermore, a first limiting plate and a second limiting plate are hinged on the outer wall of each of the first support columns, a first limiting column is arranged on each of the first limiting plates, and a second limiting column is arranged on each of the second limiting plates, and the first limiting column and the second limiting column can be respectively inserted into the first through hole and the second through hole.

[0010] Furthermore, the diameter of any one of the first through holes is larger than the diameter of the first limiting column, the diameter of any one of the first through holes is larger than the diameter of the second limiting column, the diameter of any one of the second through holes is larger than the diameter of the first limiting column, and the diameter of any one of the second through holes is larger than the diameter of the second limiting column.

[0011] Furthermore, the aperture of each of the first through holes is greater than or equal to the aperture of each of the second through holes.

[0012] Furthermore, the first limiting plate and the second limiting plate hinged on the same first supporting column are fixedly connected by a screw and a nut.

[0013] Furthermore, the bottoms of the first baffle plate and the second baffle plate are wedge-shaped, and the tops of the first baffle plate and the second baffle plate are evenly fixed with lifting ears.

[0014] 3) Beneficial effects:

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model selects a suitable distance between the first support column and the second support column, then inserts the limit column into the first through hole and the second through hole, and fixes the two limit plates by threaded connection, so as to accurately adjust the distance between the first baffle plate and the second baffle plate to meet the needs of trench excavation of different depths and widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a front cross-sectional view of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure in which the first limiting column and the second limiting column are inserted into the first through hole and the second through hole in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure in which the first limiting column is inserted into the first through hole and the second through hole, and the second limiting plate rotates in the utility model;

[0021] In the figure: 1. first baffle; 2. second baffle; 3. first support column; 4. second support column; 5. first through hole; 6. second through hole; 7. first limit plate; 8. second limit plate; 9. first limit column; 10. second limit column; 11. lifting ear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] Combination Figures 1 to 4 A trench excavation protection device shown in the figure includes two parallel first baffles 1 and second baffles 2. The functions of the first baffles 1 and the second baffles 2 are to prevent earth collapse and protect the safety of the working area. A plurality of first support columns 3 are vertically welded on the first baffle 1, and a plurality of second support columns 4 are vertically welded on the second baffle 2. The first support columns 3 and the second support columns 4 are used to support the first baffles 1 and the second baffles 2 and transfer loads. The central axis of each first support column 3 is colinear with the central axis of a second support column 4. The shortest distance between the coaxial first support column 3 and the second support column 4 can be changed. The distance between the first support column 1 and the second baffle 2 is changed by adjusting the distance between the first support column 3 and the second support column 4 to adapt to different trench sizes and depths.

[0025] Regarding how to adjust the distance between the first support column 3 and the second support column 4, thereby adjusting the distance between the first baffle 1 and the second baffle 2, specifically, in some embodiments, as Figures 1 to 4 As shown, the inner diameter of each first support column 3 is larger than the outer diameter of each second support column 4, and the first support column 3 is sleeved on the outer diameter of the second support column 4 to achieve a movable connection between the two. The distance between the first baffle 1 and the second baffle 2 is adjusted by moving the first support column 3 or the second support column 4 to adapt to different groove sizes and depth requirements.

[0026] In the above structure, the first support column 3 is sleeved on the second support column 4, the distance between the first baffle 1 and the second baffle 2 is adjusted according to the width of the groove, and the first support column 3 or the second support column 4 is moved to a suitable position, and then the first support column 3 and the second support column 4 are fixed to ensure that there is no relative movement between the two during the construction process.

[0027] Specifically, in some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, each first support column 3 is symmetrically provided with a first through hole 5, and each second support column 4 is symmetrically provided with a plurality of rows of second through holes 6. By making the first through holes 5 on the first support column 3 overlap with the second through holes 6 in different rows on the second support column 4 and fixing them relatively, the connection and fixation between the support columns can be achieved, thereby adjusting the distance between the first baffle 1 and the second baffle 2. This precise alignment and connection method can ensure the stability and reliability of the baffle system.

[0028] On the basis of the above, if Figure 3 and Figure 4 As shown, a first limiting plate 7 and a second limiting plate 8 are hinged on the outer wall of each first support column 3. The first limiting plate 7 and the second limiting plate 8 are arc-shaped, so that they can tightly wrap the outer wall of the first support column 3 to provide a more stable support structure. This design can also reduce the looseness and shaking in the baffle system and increase the stability of the overall structure. A first limiting column 9 is fixed on the inner wall of the arc-shaped groove of each first limiting plate 7, and a second limiting column 10 is fixed on the inner wall of the arc-shaped groove of each second limiting plate 8. The first limiting column 9 and the second limiting column 10 are fixed on the inner wall of the arc-shaped groove of each second limiting plate 8. The positioning column 10 can be respectively inserted into the two first through holes 5 located on the same axis, ensuring the accurate alignment and fixed connection between the limiting column and the through hole, thereby realizing the adjustable and stable fixation of the support column. It should be noted that the aperture diameter of the first through hole 5 and the second through hole 6 is larger than the diameter of the first limiting column 9 and the second limiting column 10, thereby ensuring that during the rotation of the first limiting plate 7 and the second limiting plate 8, the first limiting column 9 and the second limiting column 10 can be inserted into the first through hole 5 and the second through hole 6 without interfering with other components.

[0029] Furthermore, in actual operation, two second through holes 6 at appropriate positions of the second support column 4 are selected and moved so that the centers of the two first through holes 5 on the first support column 3 are colinear. At this time, the first limiting plate 7 is rotated so that the first limiting column 9 is inserted into the first through hole 5 and the second through hole 6 on the same side. The second limiting plate 8 is rotated so that the second limiting column 10 is inserted into the first through hole 5 and the second through hole 6 on the other side, ensuring the accurate connection between the limiting column and the support column. Threaded holes are provided at the bottom of the first limiting plate 7 and the second limiting plate 8. The screws are inserted into the threaded holes and threadedly connected to ensure that the screws are firmly fixed on the limiting plates. Nuts are respectively provided on both sides of the first limiting plate 7 and the second limiting plate 8. The nuts are tightened to fix them with the screws, thereby ensuring a firm connection between the limiting plates, the screws and the nuts. The distance between the first baffle plate 1 and the second baffle plate 2 is fixed on the basis of adjusting the distance between the two, thereby increasing the stability and reliability of the supporting structure.

[0030] In some embodiments, the bottom of the first baffle 1 and the second baffle 2 is wedge-shaped, and the wedge-shaped design makes it easy to insert into the soil layer. The wedge-shaped bottom can effectively penetrate the soil, provide stable support, and ensure that the baffle remains stable in position during excavation. The first baffle 1 and the second baffle 2 are evenly fixed with lifting ears 11 on the top. The design of the lifting ears 11 allows the baffles to be easily lifted and moved. Through the lifting ears 11, construction workers can use lifting equipment to easily manipulate and adjust the position of the baffles, thereby improving construction efficiency and safety.

[0031] During specific use, the distance between the first baffle plate 1 and the second baffle plate 2 is adjusted according to the width of the groove, and the two second through holes 6 at appropriate positions on the second support column 4 are selected. Then, the first limiting plate 7 is rotated to make the first limiting column 9 inserted into the first through hole 5 and the second through hole 6 on the same side, and the second limiting plate 8 is rotated to make the second limiting column 10 inserted into the first through hole 5 and the second through hole 6 on the other side. The screw is inserted into the threaded holes at the bottom of the first limiting plate 7 and the second limiting plate 8, and the nuts on both sides of the first limiting plate 7 and the second limiting plate 8 are tightened to fix them with the screw, so that the first support column 3 and the second support column 4 are fixed to ensure that the distance between the first baffle plate 1 and the second baffle 2 remains unchanged.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A trench excavation protection device, comprising a first baffle (1) and a second baffle (2) arranged in parallel, characterized in that: A plurality of first support columns (3) are vertically arranged on the first baffle plate (1), and a plurality of second support columns (4) are vertically arranged on the second baffle plate (2), and the central axis of each of the first support columns (3) is colinear with the central axis of one of the second support columns (4), and the shortest distance between the coaxial first support columns (3) and the second support columns (4) is variable; A first limiting plate (7) and a second limiting plate (8) are hingedly connected to the outer wall of each of the first supporting columns (3); The first limiting plate (7) and the second limiting plate (8) are hinged on the same first supporting column (3) and are fixedly connected by means of screws and nuts; the first limiting plate and the second limiting plate are arc-shaped, a first limiting column is fixed on the inner wall of the arc-shaped groove of each first limiting plate, and a second limiting column is fixed on the inner wall of the arc-shaped groove of each second limiting plate, and the first limiting column and the second limiting column can be respectively inserted into two first through holes located on the same axis.

2. A trench excavation protection device according to claim 1, characterized in that: The inner diameter of each of the first support columns (3) is greater than the outer diameter of each of the second support columns (4), and any one of the first support columns (3) is movably sleeved on the coaxial second support columns (4).

3. A trench excavation protection device according to claim 2, characterized in that: Each of the first support columns (3) is symmetrically provided with first through holes (5), and each of the second support columns (4) is symmetrically provided with multiple rows of second through holes (6).

4. A trench excavation protection device according to claim 3, characterized in that: Each of the first limiting plates (7) is provided with a first limiting column (9), and each of the second limiting plates (8) is provided with a second limiting column (10). The first limiting column (9) and the second limiting column (10) can be inserted into the first through hole (5) and the second through hole (6) respectively.

5. A trench excavation protection device according to claim 4, characterized in that: The diameter of any one of the first through holes (5) is larger than the diameter of the first limiting column (9), the diameter of any one of the first through holes (5) is larger than the diameter of the second limiting column (10), the diameter of any one of the second through holes (6) is larger than the diameter of the first limiting column (9), and the diameter of any one of the second through holes (6) is larger than the diameter of the second limiting column (10).

6. A trench excavation protection device according to claim 5, characterized in that: The aperture of each of the first through holes (5) is greater than or equal to the aperture of each of the second through holes (6).

7. A trench excavation protection device according to claim 1, characterized in that: The bottoms of the first baffle plate (1) and the second baffle plate (2) are wedge-shaped, and lifting ears (11) are evenly fixed on the tops of the first baffle plate (1) and the second baffle plate (2).

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