A trench excavation support device

Abstract

The utility model relates to municipal infrastructure construction technical field discloses a drainage ditch groove excavation support device, include: support platform, the connecting frame of support platform bottom is equipped, extends to the bottom of drainage ditch groove, the utility model discloses the stability and high adaptability of sidewall support in the drainage ditch groove excavation process are realized through support platform, connecting frame and side bracing plate. The support platform is straddled on the groove top, forms independent stress system, avoids the security hidden danger that the traditional support needs to install in the groove inside. The connecting frame provides vertical stable support to extend downward, provides reliable basis for the unfolding of side bracing plate. Through the thread transmission structure of lead screw and screw pipe, the construction personnel can carry out accurate adjustment outside the groove, makes the sliding support along the vertical track stable movement, and further through the linkage driving two side bracing plates synchronous unfolding or folding, realizes the quick adaptation to different ditch width, improves the accuracy and convenience of support operation.

Description

Technical Field

[0001] This utility model relates to the field of municipal infrastructure construction technology, specifically to a drainage ditch excavation support device. Background Technology

[0002] In the construction of infrastructure such as municipal roads, industrial parks, residential areas, and factories and mines, stormwater and sewage pipe networks, water supply and drainage pipelines, and power and communication lines are mostly laid through underground trenches. To ensure the slope, elevation, and stability of drainage pipelines, trenches are typically long, narrow in cross-section, and have a certain excavation depth, and construction sites are often located in areas with existing roads, buildings, or dense underground pipelines. During trench excavation, the strength of the overlying soil decreases after disturbance. Without effective support, it is prone to collapse under construction vibrations, vehicle loads, or groundwater seepage, which not only affects the quality of pipeline laying but also poses significant safety hazards. Therefore, relevant specifications generally require reliable support for the trench sidewalls.

[0003] In current engineering practice, drainage ditch support often uses materials such as timber, steel pipes, channel steel, and sheet piles. Temporary horizontal bracing, vertical bracing, or grid-like supports are erected on-site, or combined sheet piles are used in conjunction with internal bracing for reinforcement. This type of support often relies on manual experience to determine the support spacing and arrangement, resulting in poor stiffness-strength matching. It is prone to significant deformation when encountering soft soil layers or high groundwater levels, affecting the ditch cross-sectional dimensions and pipeline elevation control. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a drainage ditch excavation support device, which aims to alleviate the above problems to at least a certain extent.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A drainage ditch excavation support device includes: Support platform; The connecting frame located at the bottom of the support platform extends towards the bottom of the drainage ditch; Two side support plates are provided at the bottom of the support platform, located on both sides of the connecting frame; A support component located between the support platform and the side support plate is used to synchronously move the positions of the two side support plates, with the side support plates moving away from or closer to the drainage ditch. The side support plate is rotatably mounted.

[0006] Preferably, the connecting frame is provided with a vertical rail, a sliding bracket is slidably connected to the vertical rail, a connecting rod is rotatably connected to the sliding bracket, and the other end of the connecting rod is connected to the side support plate.

[0007] Preferably, a connecting rod is rotatably connected to the end of the connecting rod, and a connecting shaft is fixed on the side support plate. The side support plate is rotatably connected to the connecting rod through the connecting shaft.

[0008] Preferably, a screw tube is fixed on the sliding bracket, and a lead screw that is threadedly connected to the screw tube is rotatably connected to the support platform.

[0009] Preferably, a connecting piece is fixed on the connecting shaft, the connecting piece is rotatably connected to the connecting rod, a plurality of wedge-shaped strips are slidably connected to the outer wall of the connecting piece, a spring is connected between the wedge-shaped strips and the connecting piece, and a plurality of wedge-shaped openings adapted to the ends of the wedge-shaped strips are provided on the inner wall of the connecting rod.

[0010] Preferably, a rotary table is fixed to the upper end of the lead screw.

[0011] In summary, the present invention has the following main advantages: This invention achieves stability and high adaptability of sidewall support during drainage ditch excavation through a support platform, connecting frame, and side support plates. The support platform spans above the ditch, forming an independent force-bearing system, avoiding the safety hazards of traditional supports that require installation inside the ditch. The connecting frame extends downward to provide vertical stability support, providing a reliable foundation for the deployment of the side support plates. Through a threaded transmission structure of screws and helices, construction personnel can make precise adjustments outside the ditch, allowing the sliding support to move smoothly along the vertical track. Furthermore, the connecting rod drives the two side support plates to deploy or retract synchronously, achieving rapid adaptation to different ditch widths and improving the accuracy and convenience of support operations.

[0012] Furthermore, the side support plate adopts a rotatable structure and maintains its initial angle through a limiting mechanism composed of a connecting shaft, connecting plate, and wedge strips. This prevents the side support plate from sagging naturally before being subjected to force, ensuring stability during installation and adjustment. The wedge strips, under the action of springs, provide elastic limiting and damping effects, making the side support plate more stable when adhering to the trench sidewall, reducing impact and improving support quality. When the sidewall has an inclination angle or irregular surface, the side support plate can achieve adaptive fitting based on its own rotational freedom, resulting in a uniform and reliable force distribution. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is another schematic diagram of the overall structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of the connecting rod structure of this utility model.

[0014] Figure label: 100. Support platform; 101. Connecting frame; 102. Side support plate; 200. Vertical track; 201. Sliding bracket; 202. Connecting rod; 203. Screw; 204. Lead screw; 205. Rotary table; 300. Connecting rod; 301. Connecting shaft; 302. Connecting piece; 303. Wedge strip; 304. Spring; 305. Wedge opening. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] refer to Figure 1 - Figure 3 This embodiment provides a drainage ditch excavation support device, including a support platform 100, a connecting frame 101, two side support plates 102, and a support component disposed between the support platform 100 and the side support plates 102.

[0017] The support platform 100 is arranged horizontally above the drainage ditch and serves as the load-bearing base for the overall support device. The connecting frame 101 is fixedly installed at the bottom of the support platform 100 and extends vertically downward to the bottom of the drainage ditch.

[0018] Both side support plates 102 are disposed at the bottom of the support platform 100, located on both sides of the connecting frame 101, and are used to correspond to the left and right side walls of the drainage ditch. In order to enable the support device to adapt to trenches of different widths, a support component is provided between the support platform 100 and the side support plates 102 in this embodiment. The support component can simultaneously drive the two side support plates 102 to move, so that the two side support plates 102 approach the side of the drainage ditch in a synchronized state, thereby forming an adjustable support effect at the side wall of the ditch.

[0019] The side support plate 102 is rotatably configured, allowing for angle adjustment when in contact with or supporting the trench sidewall. As the side support plate 102 moves under the drive of the supporting components, it can adaptively rotate according to the inclination or shape changes of the trench sidewall, conforming to it and improving the stability and uniformity of lateral support. The support structure described in this embodiment can be stably applied under conditions of varying trench width and sidewall shape, meeting the safety support requirements during drainage ditch excavation.

[0020] Based on the previous embodiment, this embodiment further defines the support components between the support platform 100 and the side support plate 102. A vertical rail 200 is provided on the connecting frame 101 to provide a controllable guide path for the support mechanism.

[0021] A sliding bracket 201 is slidably connected to the vertical track 200. The sliding bracket 201 can move up and down along the vertical track 200, thus maintaining a stable force state in the vertical direction during support. A connecting rod 202 is rotatably connected to the sliding bracket 201. One end of the connecting rod 202 is rotatably mounted on the sliding bracket 201, and the other end is connected to the side support plate 102. When the sliding bracket 201 moves along the vertical track 200, the connecting rod 202, under the action of the rotatable hinge, drives the side support plate 102 to move synchronously, allowing the side support plate 102 to move closer to or further away from the side wall of the drainage ditch according to the adjustment of the support components, achieving adjustable support for the side wall. Through the above arrangement, the displacement path of the side support plate 102 is more stable and controllable, further improving the fit and reliability of the overall support structure.

[0022] Based on the aforementioned embodiments, this embodiment further defines the connection method between the connecting rod 202 and the side support plate 102. A connecting rod 300 is rotatably connected to the end of the connecting rod 202. The connecting rod 300 serves as an intermediate component for realizing motion transition, with one end of it rotatably mounted on the end of the connecting rod 202, allowing the connecting rod 300 to flexibly swing with the attitude change of the end of the connecting rod 202.

[0023] A connecting shaft 301 is fixedly installed on the side support plate 102. The connecting shaft 301 is arranged along the thickness direction of the side support plate 102 and serves as the rotation mounting point for the connecting rod 300. The connecting rod 300 is rotatably connected to the connecting shaft 301, and the connecting shaft 301 can rotate around the connecting rod 300, thereby giving the side support plate 102 a controllable degree of freedom of swing when driven by the connecting rod 202. Through the above connection method, a stable hinge relationship is formed between the connecting rod 202 and the side support plate 102. The structure is simple and the force path is clear, which can realize the smooth adjustment and synchronous movement of the side support plate 102. The side support plate 102 can be angle compensated by the setting of the connecting shaft 301, so that the side support plate 102 can remain in contact with the trench sidewall at different angles, improving the uniformity and stability of the support force.

[0024] Based on the aforementioned embodiments, this embodiment further defines the driving method of the support component. A screw tube 203 is fixedly installed on the sliding bracket 201, and the screw tube 203 is arranged vertically and forms an integral part with the sliding bracket 201.

[0025] A lead screw 204 is rotatably connected to the support platform 100. The lead screw 204 and the solenoid 203 are threaded together, allowing the lead screw 204 to rotate and drive the solenoid 203 to move along the axial direction of the lead screw 204. Through this threaded transmission structure, the sliding bracket 201 slides up and down along the vertical track 200 under the drive of the solenoid 203, thereby achieving precise adjustment of the position of the side support plate 102. The cooperation between the solenoid 203 and the lead screw 204 gives the support components the advantages of sensitive adjustment and high controllability, facilitating operation by construction personnel above the trench.

[0026] Based on the aforementioned embodiments, this embodiment further defines the rotatable connection structure of the side support plate 102. A connecting piece 302 is fixedly provided on the connecting shaft 301 on the side support plate 102. The connecting piece 302 has a disc-shaped structure and is rotatably installed inside the connecting rod 300, so that it can rotate freely within the connecting rod 300 when the side support plate 102 undergoes angular adjustment.

[0027] To limit the initial angle of the side support plate 102 and prevent it from sagging naturally when not under load, thus affecting installation and support, this embodiment features multiple wedge-shaped strips 303 slidably connected to the outer wall of the connecting piece 302. Each wedge-shaped strip 303 is evenly distributed along the circumference of the connecting piece 302. A spring 304 connects each wedge-shaped strip 303 to the connecting piece 302, causing the wedge-shaped strip 303 to continuously push outwards under the action of the spring 304. The inner wall of the connecting rod 300 is provided with multiple wedge-shaped openings 305 that fit the ends of the wedge-shaped strips 303. Under the action of the spring 304, the wedge-shaped strips 303 are embedded in the wedge-shaped openings 305, thereby limiting the connection piece 302 and further defining the initial angle of the side support plate 102. This structure provides angular support before the side support plate 102 contacts the trench sidewall, ensuring that the side support plate 102 maintains a reliable support posture before use.

[0028] When the device is in a free state, multiple wedge-shaped strips 303 move outwards under the elastic force of springs 304, with their ends embedding into wedge-shaped openings 305 on the inner wall of the connecting rod 300. The wedge-shaped openings 305 position the wedge-shaped strips 303, subjecting the connecting piece 302 to circumferential limiting action, thereby restricting the initial angles of the connecting shaft 301 and the side support plate 102. Through this structure, the side support plate 102 will not sag naturally due to its own weight, but will remain in a preset posture suitable for contacting the trench sidewall. This helps maintain the stability of the device when it is placed as a whole above the trench, significantly improving construction convenience and initial support accuracy.

[0029] Based on the aforementioned embodiments, this embodiment further defines the upper structure of the lead screw 204. A rotary table 205 is fixedly connected to the upper end of the lead screw 204. The rotary table 205 is positioned above the support platform 100, facilitating direct contact and operation by workers. The rotary table 205 is disc-shaped or has another easy-to-grip structure, allowing construction workers to rotate it by hand. It can also be adapted to commonly used construction tools (such as socket wrenches, levers, etc.) to improve operational efficiency. By fixing the rotary table 205 to the lead screw 204, the rotation of the rotary table 205 can drive the lead screw 204 to rotate synchronously, thereby driving the solenoid tube 203 to move up and down, thus adjusting the position of the side support plate 102.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drainage ditch excavation support device, characterized in that, include: Support platform (100); The connecting frame (101) located at the bottom of the support platform (100) extends toward the bottom of the drainage ditch; Two side support plates (102) are provided at the bottom of the support platform (100) and are located on both sides of the connecting frame (101); A support component located between the support platform (100) and the side support plate (102) is used to synchronously move the positions of the two side support plates (102), with the side support plates (102) moving away from or closer to the drainage ditch. The side support plate (102) is rotatably configured.

2. The drainage ditch excavation support device according to claim 1, characterized in that, The connecting frame (101) is provided with a vertical rail (200), a sliding bracket (201) is slidably connected to the vertical rail (200), a connecting rod (202) is rotatably connected to the sliding bracket (201), and the other end of the connecting rod (202) is connected to the side support plate (102).

3. The drainage ditch excavation support device according to claim 2, characterized in that, The end of the connecting rod (202) is rotatably connected to a connecting rod (300), and a connecting shaft (301) is fixed on the side support plate (102). The side support plate (102) is rotatably connected to the connecting rod (300) through the connecting shaft (301).

4. The drainage ditch excavation support device according to claim 3, characterized in that, A screw tube (203) is fixed on the sliding bracket (201), and a lead screw (204) that is threadedly connected to the screw tube (203) is rotatably connected to the support platform (100).

5. A drainage ditch excavation support device according to claim 4, characterized in that, A connecting piece (302) is fixed on the connecting shaft (301). The connecting piece (302) is rotatably connected to the connecting rod (300). A plurality of wedge-shaped strips (303) are slidably connected to the outer wall of the connecting piece (302). A spring (304) is connected between the wedge-shaped strips (303) and the connecting piece (302). A plurality of wedge-shaped openings (305) adapted to the ends of the wedge-shaped strips (303) are opened on the inner wall of the connecting rod (300).

6. The drainage ditch excavation support device according to claim 4, characterized in that, A rotary table (205) is fixed to the upper end of the lead screw (204).

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