A trench shoring device

Abstract

The utility model discloses a kind of trench support devices, including four square array arrangement support poles, at least two upper and lower parallel arrangement telescopic link components are hingedly connected between every two adjacent support poles, the bottom end of the support pole is provided with sharp head for inserting stratum, the top surface of the support pole is provided with the plane for being knocked, the hinged shaft of telescopic link component and support pole is horizontally arranged. This trench support device can meet the support requirements of curved trench and different length trench, and has good adaptability.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a trench support device. Background Technology

[0002] In the open-cut construction of municipal sewage pipe networks, trench excavation is generally required. During the trench excavation process, support plates are needed to support the sidewalls of the trench to prevent them from collapsing.

[0003] Chinese patent document with application number 202510540791.5 discloses a deep trench excavation support device and construction method, including a left support component, a right support component, and several support crossbars disposed between the left and right support components. The two ends of the support crossbars are respectively hinged to predetermined positions of the left and right support components, forming an excavation space with the left and right support components, allowing the left and right support components to gradually sink as the trench is excavated. This deep trench excavation support device has the following shortcomings: 1) Both the left and right support components are fixed integral structures that sink as a whole during the excavation process. Therefore, they can generally only support horizontally extending trenches and cannot meet the support requirements of curved trenches with flat bottoms and slopes. 2) The support crossbar is a fixed structure with a constant length, which makes it difficult to meet the support requirements of trenches of different widths and has poor adaptability. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a trench support device that can meet the support requirements of curved trenches and trenches of different lengths and has good adaptability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A trench support device includes four support rods arranged in a square array. At least two telescopic connecting rod assemblies arranged vertically and horizontally are hinged between each pair of adjacent support rods. The bottom end of each support rod is provided with a pointed tip for insertion into the stratum, and the top surface of each support rod is provided with a strike-resistant surface for impact. The telescopic connecting rod assemblies are horizontally arranged with the hinge axis of the support rods.

[0006] As a further improvement to the above technical solution: The telescopic linkage assembly includes a sleeve rod and two connecting screw rods. One end of each connecting screw rod is hinged to an adjacent support rod, and the other end is threaded to both ends of the sleeve rod.

[0007] The two ends of the sleeve are respectively fitted with adjusting screw sleeves, and the connecting screw is threadedly connected to the corresponding adjusting screw sleeve.

[0008] One end of the adjusting screw sleeve is fixedly provided with a docking cylinder, the inner wall of the docking cylinder is provided with an inner convex ring, and the outer walls of both ends of the sleeve rod are provided with limiting ring grooves. The docking cylinder and the end of the sleeve rod are rotatably engaged by bearings, and the inner convex ring is stuck in the corresponding limiting ring groove and rotatably engaged with the limiting ring groove.

[0009] The sleeve, connecting screw, adjusting screw sleeve, and docking cylinder are all coaxially arranged.

[0010] The outer periphery of the adjusting screw sleeve is provided with a screwing part.

[0011] The sleeve rod has internal threads with opposite helical directions at both ends, and the connecting screw is connected to the internal threads at the corresponding ends of the sleeve rod.

[0012] The support rod is provided with a hinge seat, and the telescopic connecting rod assembly is hinged to the hinge seat.

[0013] The telescopic linkage assembly is a steel component, and the support rod is a steel rod.

[0014] The cross-section of the support rod is square.

[0015] Compared with the prior art, the advantages of this utility model are: This utility model discloses a trench support device. After a trench section is excavated, a hoisting device is used to place the trench support device into the trench. The tips of the two left support rods are inserted into the ground along the left side wall of the trench, and the tips of the two right support rods are inserted into the ground along the right side wall of the trench. Since each pair of adjacent support rods is hinged via a telescopic linkage assembly, their relative positions can be adjusted vertically. Specifically, the two left support rods and the two right support rods can be adjusted vertically, allowing the bottoms of the support rods to be at unequal heights. This meets the support requirements for curved trenches with flat bottoms and slopes. Furthermore, the telescopic linkage assembly is adjustable in total length, meeting the support requirements for trench sections of different widths and lengths, demonstrating good adaptability. Attached Figure Description

[0016] Figure 1 This is a top view of the trench support device of this utility model.

[0017] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 This is a schematic diagram of the main structure of the trench support device of this utility model.

[0019] Figure 4 This is another structural schematic diagram of the telescopic connecting rod assembly of the trench support device of this utility model.

[0020] The labels in the diagram represent: 1. Support rod; 11. Hinge seat; 2. Telescopic connecting rod assembly; 21. Sleeve rod; 211. Limiting ring groove; 22. Connecting screw; 23. Adjusting screw sleeve; 24. Tightening part; 25. Connecting cylinder; 251. Inner convex ring; 3. Pointed end; 4. Impact surface; 5. Bearing; 6. Hinge shaft. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Figures 1 to 3 This invention illustrates an embodiment of the trench support device. The trench support device of this embodiment includes four support rods 1 arranged in a square array. At least two telescopic connecting rod assemblies 2 arranged vertically and horizontally are hinged between each pair of adjacent support rods 1. The bottom end of the support rod 1 is provided with a pointed tip 3 for insertion into the stratum. The top surface of the support rod 1 is provided with a striking surface 4 for being struck. The telescopic connecting rod assembly 2 is horizontally arranged with the hinge axis 6 of the support rod 1.

[0026] After a section of the trench is excavated, the trench support device is placed in the trench using hoisting equipment. The tips 3 of the two left support rods 1 are inserted into the ground along the left side wall of the trench, and the tips 3 of the two right support rods 1 are inserted into the ground along the right side wall of the trench. Since each pair of adjacent support rods 1 is hinged via a telescopic linkage assembly 2, they can be adjusted vertically to a suitable position. That is, the two left support rods 1 and the two right support rods 1 can be adjusted vertically to a suitable position, allowing the bottoms of each support rod 1 to be at different heights, thus meeting the support requirements for curved trenches with flat bottoms and slopes. Furthermore, the telescopic linkage assembly 2 is adjustable in total length, meeting the support requirements for trench sections of different widths and lengths, demonstrating good adaptability.

[0027] Furthermore, in this embodiment, the telescopic linkage assembly 2 includes a sleeve rod 21 and two connecting screws 22. One end of each connecting screw 22 is hinged to an adjacent support rod 1, and the other end is threaded to both ends of the sleeve rod 21. By rotating the sleeve rod 21 relative to the connecting screws 22, the total length of the telescopic linkage assembly 2 can be adjusted.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, adjusting sleeves 23 are rotatably fitted at both ends of the sleeve rod 21, and the connecting screw 22 is threadedly connected to the corresponding adjusting sleeve 23. In this way, the total length of the telescopic connecting rod assembly 2 can be adjusted by rotating the adjusting sleeve 23 on one side of the sleeve rod 21 relative to the connecting screw 22, without rotating the sleeve rod 21, which is more labor-saving than rotating the sleeve rod 21.

[0029] Furthermore, such as Figure 2 As shown, in this embodiment, a connecting sleeve 25 is fixedly provided at one end of the adjusting screw sleeve 23. The inner wall of the connecting sleeve 25 is provided with an inner convex ring 251. Limiting ring grooves 211 are provided on the outer walls of both ends of the sleeve rod 21. The ends of the connecting sleeve 25 and the sleeve rod 21 are rotatably engaged by a bearing 5. The inner convex ring 251 is engaged in the corresponding limiting ring groove 211 and rotatably engages with it. The adjusting screw sleeve 23 and the connecting sleeve 25 can be coaxially welded or fixedly connected by bolts. The bearing 5 is preferably located between the adjusting screw sleeve 23 and the inner convex ring 251 and is installed before the adjusting screw sleeve 23 and the connecting sleeve 25 are fixed. The inner convex ring 251 being engaged in the corresponding limiting ring groove 211 improves the axial connection strength between the adjusting screw sleeve 23 and the sleeve rod 21, preventing relative axial displacement between them. The rotatable engagement of the inner convex ring 251 and the limiting ring groove 211 does not affect the rotatable engagement between the adjusting screw sleeve 23 and the sleeve rod 21. The connecting screw 22 can be inserted into the sleeve 21 and can rotate relative to the sleeve 21. Specifically, the adjusting sleeve 23 engages with the external thread of the connecting screw 22 through the thread on its inner wall.

[0030] Furthermore, in this embodiment, the sleeve 21, connecting screw 22, adjusting screw sleeve 23, and docking cylinder 25 are all coaxially arranged.

[0031] Furthermore, in this embodiment, the outer periphery of the adjusting screw sleeve 23 is provided with a screwing part 24, which facilitates screwing the adjusting screw sleeve 23.

[0032] In other embodiments, such as Figure 4 As shown, internal threads with opposite helical directions can also be provided at both ends of the sleeve rod 21, and the connecting screw 22 can be connected to the internal threads at the corresponding ends of the sleeve rod 21, instead of rotating the adjusting screw sleeve 23 at both ends of the sleeve rod 21. The structure is relatively simple, but the sleeve rod 21 needs to be rotated to adjust the total length, which is more laborious than rotating the adjusting screw sleeve 23.

[0033] Furthermore, in this embodiment, the support rod 1 is provided with a hinge seat 11, and the telescopic connecting rod assembly 2 is hinged to the hinge seat 11.

[0034] Furthermore, in this embodiment, the telescopic link assembly 2 is a steel assembly, and the support rod 1 is a steel rod. Of course, in other embodiments, the telescopic link assembly 2 and the support rod 1 may also be made of other materials that meet the strength requirements.

[0035] Furthermore, in this embodiment, the cross-section of the support rod 1 is square, which facilitates the installation of the hinge seat 11.

[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A trench support device, characterized in that: It includes four support rods (1) arranged in a square array. At least two telescopic connecting rod assemblies (2) are hinged between each pair of adjacent support rods (1). The bottom end of the support rod (1) is provided with a pointed tip (3) for insertion into the stratum. The top surface of the support rod (1) is provided with a striking surface (4) for being struck. The telescopic connecting rod assembly (2) is horizontally set with the hinge axis (6) of the support rod (1).

2. The trench support device according to claim 1, characterized in that: The telescopic linkage assembly (2) includes a sleeve rod (21) and two connecting screws (22). One end of each of the two connecting screws (22) is hinged to the adjacent support rod (1), and the other end is threaded to both ends of the sleeve rod (21).

3. The trench support device according to claim 2, characterized in that: The two ends of the sleeve (21) are respectively fitted with adjusting screw sleeves (23), and the connecting screw (22) is threadedly connected to the corresponding adjusting screw sleeve (23).

4. The trench support device according to claim 3, characterized in that: One end of the adjusting screw sleeve (23) is fixedly provided with a docking cylinder (25). The inner wall of the docking cylinder (25) is provided with an inner convex ring (251). The outer walls of both ends of the sleeve rod (21) are provided with limiting ring grooves (211). The docking cylinder (25) and the end of the sleeve rod (21) are rotatably engaged by a bearing (5). The inner convex ring (251) is stuck in the corresponding limiting ring groove (211) and rotatably engaged with the limiting ring groove (211).

5. The trench support device according to claim 4, characterized in that: The sleeve (21), connecting screw (22), adjusting screw sleeve (23) and docking cylinder (25) are all coaxially arranged.

6. The trench support device according to claim 3, characterized in that: The outer periphery of the adjusting screw sleeve (23) is provided with a screwing part (24).

7. The trench support device according to claim 3, characterized in that: The sleeve (21) has internal threads with opposite helical directions at both ends, and the connecting screw (22) is connected to the internal threads at the corresponding ends of the sleeve (21).

8. The trench support device according to any one of claims 1 to 7, characterized in that: The support rod (1) is provided with a hinge seat (11), and the telescopic link assembly (2) is hinged to the hinge seat (11).

9. The trench support device according to any one of claims 1 to 7, characterized in that: The telescopic linkage assembly (2) is a steel assembly, and the support rod (1) is a steel rod.

10. The trench support device according to any one of claims 1 to 7, characterized in that: The cross-section of the support rod (1) is square.

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