Support structure for trench construction

Abstract

This application provides a support structure for trench construction, including multiple sets of corresponding side support plates and support components. The multiple sets of side support plates are arranged along the length of the trench inside the trench, and each set of side support plates includes two strip plates that abut against both sides of the trench. On the same side of the trench, adjacent strip plates are hinged. Each support component includes multiple sets of width-direction supports, and each set of width-direction supports includes two telescopic crossbeams and two reinforcing vertical beams. Each telescopic crossbeam has two ends that abut against two strip plates. The two reinforcing vertical beams are arranged side-by-side between the two telescopic crossbeams along the width of the trench, and are close to the two strip plates. Each end of the reinforcing vertical beam is connected to the two telescopic crossbeams. The trench construction support structure provided by this application can adjust the support width as needed by adjusting the length of the telescopic crossbeams to adapt to different trench widths, thereby improving the overall efficiency of trench construction.

Description

Technical Field

[0001] This application belongs to the field of trench construction technology, specifically relating to a support structure for trench construction. Background Technology

[0002] In trench construction in municipal engineering, underground utility tunnels, and water conservancy facilities, the support structure is a key facility to ensure construction safety, used to resist lateral pressure from the soil and prevent the trench sidewalls from collapsing.

[0003] In existing technologies, channel steel or I-beam cross bracing is commonly used as a temporary support system for trenches in China. This system typically uses fixed-size support components customized according to the designed width of the trench; during on-site installation, the two ends of the support components are pressed against the sidewalls of the trench, relying on the compressive strength of the components themselves to provide support.

[0004] Because the actual width of the trench varies in different sections, and the width of the trench after construction often deviates from the design width, prefabricated fixed-size support components cannot be directly adapted. Frequent replacement of supports of different specifications is necessary during construction, which increases working hours and reduces the efficiency of trench construction. Summary of the Invention

[0005] This application provides a support structure for trench construction, which aims to flexibly adjust the support width as needed and adapt to different trench surfaces, thereby achieving the technical objective of rapid trench support and improving the overall efficiency of trench construction.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A support structure for trench construction is provided, comprising: Multiple sets of side support plates are arranged inside the trench along its length. Each set of side support plates includes two strip plates, which respectively abut against opposite sides within the trench. On the same side of the trench, adjacent strip plates are hinged vertically. Multiple sets of support components, each corresponding to a set of side support plates; each set of support components is disposed between two corresponding strip plates, including multiple sets of width-direction support members arranged along the length direction of the strip plates; each set of width-direction support members includes: Two telescopic beams are spaced apart vertically between corresponding strip plates, with each telescopic beam abutting against both ends of the two strip plates respectively; and Two reinforcing vertical beams are arranged side by side between the two telescopic horizontal beams along the width of the trench and are close to the two strip plates respectively; both ends of each reinforcing vertical beam are connected to the two telescopic horizontal beams respectively.

[0007] In one possible implementation, multiple sets of positioning portions are provided on adjacent sides of the two strip plates in the same group. The multiple sets of positioning portions correspond to multiple sets of width-direction support members, and each set of positioning portions includes two grooves arranged side by side in the vertical direction. Both ends of the telescopic beam are hinged with swing joints in the vertical direction; each swing joint has a locking structure with the telescopic beam, and the swing end of each swing joint is connected with a protrusion, which is used to insert into the corresponding groove.

[0008] In one possible implementation, both ends of the telescopic beam are provided with hinge slots, the swing joint is inserted into the hinge slots, and is hinged to the telescopic beam via a hinge shaft; and the locking structure includes: Multiple perforations are formed at the ends of the telescopic crossbeam and arranged around the hinge axis; Alignment holes, formed on the swing joint, adapted to communicate with any of the through holes; and A locking lever, adapted to pass through the perforation and the alignment hole and extend outward, restricts the swing of the swing joint relative to the telescopic beam.

[0009] In one possible implementation, the telescopic beam includes: A support beam is positioned between two corresponding strip plates, parallel to the width direction of the trench, and has a receiving groove on each end face; and Two adjusting arms are slidably inserted into the two storage slots respectively, and both are adapted to slide to partially extend out of the support beam; Each of the storage slots has a stop block, which abuts against the insertion end of the adjusting arm to restrict the movement of the adjusting arm into the storage slot; the side of the stop block facing the adjusting arm is inclined, and along the insertion direction of the adjusting arm, the inclined surface is inclined toward the area between the two adjusting arms.

[0010] In one possible implementation, the telescopic beam has two sets of positioning holes arranged along its width direction. The two sets of positioning holes are respectively connected to the two storage slots. Each set of positioning holes includes a plurality of insertion holes spaced apart along the length direction of the telescopic beam. Each insertion hole penetrates the telescopic beam in the vertical direction. The actuating block has a through hole running vertically, which is used to communicate with any one of the insertion holes in the corresponding group of positioning holes. Each of the aforementioned actuating blocks is provided with a mating bolt, which is adapted to pass through the insertion hole and the mating hole and extend outward, and the extended portion is threadedly connected to a mating nut.

[0011] In one possible implementation, a threaded sleeve is connected to the extended end face of the adjusting arm, the central axis of the threaded sleeve being parallel to the length direction of the adjusting arm; an adjusting screw is provided on the threaded sleeve and engages with it, and a mating seat is connected to the end of the adjusting screw away from the threaded sleeve, the mating seat being used to abut against the strip plate.

[0012] In one possible implementation, the upper and lower ends of the reinforcing vertical beam are provided with first arc-shaped grooves suitable for the threaded sleeve portion to be embedded, and a limit cover is also hinged thereto. The limiting cover is adapted to swing to abut against the reinforcing vertical beam, and a second arc-shaped groove is provided on the inner side of the limiting cover. The first arc-shaped groove and the second arc-shaped groove are combined to form a circular hole surrounding the threaded sleeve.

[0013] In one possible implementation, a first mounting hole is provided on the end face of the reinforcing vertical beam, and a second mounting hole is provided on the swing end of the limiting cover for coaxial communication with the first mounting hole. Each of the limiting covers is provided with a mounting bolt, which is adapted to pass through the first mounting hole and the second mounting hole and extend outward, and the extended part is threadedly connected to a mounting nut.

[0014] In one possible implementation, on the same side of the trench, the outer ends of the two strip plates located at the ends are hinged to limit plates in the vertical direction; The limiting plate has a guide hole that extends along the thickness direction, and a limiting stake for insertion into the side of the trench is inserted into the guide hole.

[0015] In one possible implementation, a connecting plate is provided between two adjacent strips on the same side of the trench; Each of the connecting plates is hinged to two corresponding strip plates on both sides, so that the two strip plates can swing relative to each other until their surfaces come into contact. The beneficial effects of the trench construction support structure provided in this application are as follows: In this embodiment, multiple sets of side support plates are arranged along the length of the trench. Each set of side support plates includes two strip plates that abut against the inner walls of both sides of the trench. Adjacent strip plates on the same side are hinged vertically, allowing the side support plates to adapt to unevenness or width changes of the trench sidewalls. Each support assembly is positioned between the corresponding two strip plates and includes multiple sets of width-direction supports arranged along the length of the trench. Each width-direction support includes two telescopic crossbeams arranged vertically side by side, and two reinforcing vertical beams connected between the two telescopic crossbeams. The ends of the telescopic crossbeams abut against the strip plates on both sides. By adjusting the length of the telescopic crossbeams, the spacing between the two strip plates can be changed, so that the support width matches the actual width of the corresponding position in the trench.

[0016] By adopting the above-mentioned technical means, the following beneficial effects can be achieved: (i) The length of the telescopic beam is adjustable, so that the same set of support components can be adapted to trench sections of different widths, reducing the need to replace support components of different specifications due to differences in trench width in different sections, and reducing the time consumption for on-site screening and replacement of support components.

[0017] (ii) Each set of width-direction support members includes two telescopic crossbeams arranged in parallel, one above the other. The two telescopic crossbeams provide support at the upper and lower parts of the strip plate in the height direction, respectively, so that the side support plate is subjected to more uniform force along the height direction when subjected to lateral pressure from the soil.

[0018] (iii) The vertical beams are reinforced to connect the upper and lower telescopic beams, so that the two telescopic beams maintain their relative position after length adjustment. This reduces the degree of vertical misalignment or torsion of the telescopic beams when subjected to lateral pressure, which is beneficial to the overall stability of the support structure.

[0019] (iv) The two reinforcing vertical beams are arranged close to the strip plates on both sides to reduce the space occupied in the width direction of the trench and ensure that personnel and equipment can pass between the two reinforcing horizontal beams.

[0020] (v) Two adjacent strip plates on the same side are hinged in the vertical direction, so that the side support plate has the freedom to be bent in the length direction of the trench. The side support plate can adapt to the local concave and convex changes of the trench sidewall in the length direction, reducing the situation where the support components cannot fit due to the unevenness of the trench sidewall.

[0021] (vi) The length adjustment of the telescopic beam can be completed on-site according to the actual trench width without the need to pre-customize support components of different specifications, which facilitates flexible adjustment according to the width changes during trench construction.

[0022] Compared with the prior art, the support structure for trench construction provided in this application allows the support width to match the actual width of the trench by adjusting the length of the telescopic beam. This reduces the need for frequent replacement of fixed-size support components that cannot be adapted to trenches of different widths, and helps to improve the overall efficiency of trench construction. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A three-dimensional structural diagram of the trench construction support structure provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of a portion of the middle circle A; Figure 3 for Figure 1 A magnified view of a portion of the middle circle at point B; Figure 4 This is one of the three-dimensional structural diagrams of the strip plate and the limiting plate used in the embodiments of this application in a combined state; Figure 5 This is an exploded view of the limiting plate and limiting pile used in the embodiments of this application; Figure 6 This is an exploded cross-sectional view of the strip plate and connecting plate used in the embodiments of this application. Figure 7 This is a second three-dimensional structural diagram of the strip plate and limiting plate used in the embodiments of this application in a combined state; Figure 8 This is a three-dimensional structural diagram of the strip plate, telescopic crossbeam and reinforcing vertical beam used in the embodiments of this application in a combined state; Figure 9 This is a three-dimensional structural diagram of the telescopic crossbeam and reinforcing vertical beam used in the embodiments of this application in a combined state; Figure 10 This is a three-dimensional structural diagram of the reinforcing vertical beam and the limiting cover used in the embodiments of this application in a combined state; Figure 11 This is a front view of the telescopic beam, swing joint, and docking seat used in the embodiments of this application in their combined state; Figure 12 For along Figure 11 Cross-sectional view of the CC line; Figure 13 This is a three-dimensional structural diagram of the adjusting arm used in the embodiments of this application; Figure 14 This is a three-dimensional structural diagram of the support beam used in the embodiments of this application; Figure 15 This is an exploded view of the braking block, connecting bolt, and connecting nut used in the embodiments of this application; Figure 16 This is an exploded view of the swing joint and docking seat used in the embodiments of this application; Explanation of reference numerals in the attached drawings: 1. Strip plate; 11. Groove; 12. Connecting plate; 2. Telescopic crossbeam; 21. Support beam; 211. Storage groove; 212. Positioning hole; 22. Adjusting arm; 221. Threaded sleeve; 3. Reinforcing vertical beam; 31. First arc-shaped groove; 32. First mounting hole; 4. Swing joint; 41. Protrusion; 5. Locking structure; 51. Through hole; 52. Alignment hole; 53. Locking rod; 6. Stop block; 61. Butt hole; 62. Butt bolt; 621. Butt nut; 7. Butt seat; 71. Adjusting screw; 72. Hinge groove; 73. Hinge shaft; 8. Limiting cover; 81. Second arc-shaped groove; 82. Second mounting hole; 83. Mounting bolt; 831. Mounting nut; 9. Limiting plate; 91. Guide hole; 92. Limiting post. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] 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 application 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 application.

[0028] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] Please refer to the following: Figures 1 to 16The support structure for trench construction provided in this application is described below. This support structure is mainly used to support the sidewalls of the trench during construction to prevent soil collapse. The length of the telescopic beam 2 can be adjusted to match the actual width of the trench, reducing the need for frequent replacements of fixed-size support components that cannot adapt to trenches of different widths, thus improving the overall efficiency of trench construction. The trench is a long, narrow channel excavated along the ground surface, with its length extending in the direction of trench extension, its width horizontal between the two sidewalls, and its height vertical.

[0030] The trench construction support structure proposed in this application includes multiple sets of side support plates and multiple sets of support components.

[0031] Multiple sets of side support plates are arranged inside the trench along its length. Each set of side support plates includes two strip plates 1, which are used to abut against opposite sides inside the trench. On the same side of the trench, two adjacent strip plates 1 are hinged together in the vertical direction.

[0032] Multiple sets of side support plates are continuously arranged along the length of the trench, covering the entire length of the trench requiring support. Each set of side support plates has two corresponding strip plates 1 that abut against the inner walls of the left and right sides of the trench, providing a support surface for the sidewall soil. Furthermore, the hinged connection between two adjacent strip plates 1 on the same side allows the side support plates to have flexibility along the length of the trench, enabling them to adapt to local unevenness in the trench sidewalls. This reduces the possibility of support components failing to fit properly due to unevenness in the trench sidewalls. Simultaneously, adjacent strip plates 1 can transfer some bending moment and shear force, allowing multiple strip plates 1 to form a continuous, integrated support surface along the length of the trench.

[0033] In one alternative embodiment, the strip plate 1 may be made of steel plate or high-strength alloy plate, and its width (height dimension) should be determined according to the trench depth to ensure effective support for the sidewall soil.

[0034] In another alternative embodiment, the inner side of the strip plate 1 (the side facing the inside of the trench) may be provided with reinforcing ribs to enhance the bending stiffness of the strip plate 1 and reduce the amount of deformation under the action of lateral pressure on the soil.

[0035] Multiple sets of support components correspond to multiple sets of side support plates. Each set of support components is set between two corresponding strip plates 1, including multiple sets of width-oriented support members arranged along the length of the strip plate 1.

[0036] The support assembly provides lateral support between the two strip plates 1 to resist the soil pressure on the trench sidewalls and prevent the strip plates 1 from shifting into the trench. Multiple sets of lateral support members are arranged along the length direction (i.e., the vertical direction) of the strip plates 1, so that the support force is more evenly distributed in the height direction of the strip plates 1.

[0037] In this embodiment, as Figures 8 to 14 As shown, each set of width-direction support members includes two telescopic crossbeams 2 and two reinforcing vertical beams 3.

[0038] Two telescopic beams 2 are spaced apart vertically between corresponding strip plates 1, with each end of the telescopic beam 2 abutting against both strip plates 1. The length of the telescopic beams 2 is adjustable to accommodate trench sections of varying widths. Furthermore, the upper and lower telescopic beams 2 provide support at the upper and lower parts of the strip plates 1 respectively in the height direction, ensuring a more uniform stress distribution along the height direction when the side support plate is subjected to lateral soil pressure.

[0039] Two reinforcing vertical beams 3 are arranged side-by-side between the two telescopic crossbeams 2 along the width of the trench, and are respectively close to the two strip plates 1. Both ends of each reinforcing vertical beam 3 are connected to the two telescopic crossbeams 2. The reinforcing vertical beams 3 connect the upper and lower telescopic crossbeams 2, so that the two telescopic crossbeams 2 maintain their relative position after length adjustment, reducing the degree of vertical misalignment or torsion of the telescopic crossbeams 2 when subjected to lateral pressure, which is beneficial to the overall stability of the support structure.

[0040] By placing two reinforcing vertical beams 3 near the two side strip plates 1, the space occupied in the trench width direction is reduced, ensuring that personnel and equipment can pass between the two reinforcing vertical beams 3.

[0041] In one optional embodiment, a buffer pad may be provided at the contact point between the telescopic beam 2 and the strip plate 1 to absorb the slight displacement of the strip plate 1 caused by the unevenness of the trench sidewall, while reducing the rigid impact between the telescopic beam 2 and the strip plate 1.

[0042] In another alternative embodiment, the connection between the reinforcing vertical beam 3 and the telescopic horizontal beam 2 can be configured as a detachable connection to facilitate the installation and removal of the support components.

[0043] The beneficial effects of the trench construction support structure provided in this application are as follows: In this embodiment, multiple sets of side support plates are arranged along the length of the trench. Each set of side support plates includes two strip plates 1 that abut against the inner walls of both sides of the trench. Adjacent strip plates 1 on the same side are hinged in the vertical direction, so that the side support plates can adapt to the unevenness or width change of the trench sidewalls.

[0044] Each set of support components is set between two corresponding strip plates 1, including multiple sets of width support components arranged along the length of the trench. Each set of width support components includes two telescopic beams 2 arranged side by side, and two reinforcing vertical beams 3 connected between the two telescopic beams 2. The two ends of the telescopic beams 2 abut against the two side strip plates 1. By adjusting the length of the telescopic beams 2, the distance between the two strip plates 1 can be changed so that the support width matches the actual width of the corresponding position of the trench.

[0045] By adopting the above-mentioned technical means, the following beneficial effects can be achieved: (i) The length of the telescopic beam 2 is adjustable, so that the same set of support components can be adapted to trench sections of different widths, reducing the need to replace support components of different specifications due to differences in trench width in different sections, and reducing the time consumption for on-site screening and replacement of support components.

[0046] (ii) Each set of width-direction support members includes two telescopic beams 2 arranged in parallel. The two telescopic beams 2 provide support force at the upper and lower parts of the strip plate 1 in the height direction, so that the side support plate is subjected to more uniform force along the height direction when subjected to lateral pressure from the soil.

[0047] (iii) The reinforcement vertical beam 3 connects the upper and lower telescopic beams 2, so that the two telescopic beams 2 maintain their relative position after length adjustment, which reduces the degree of vertical misalignment or torsion of the telescopic beams 2 when subjected to lateral pressure, and is conducive to the overall stability of the support structure.

[0048] (iv) Two reinforcing vertical beams 3 are arranged close to the two side strip plates 1 respectively to reduce the space occupied in the width direction of the trench and ensure that personnel and equipment can pass between the two reinforcing horizontal beams.

[0049] (v) Two adjacent strip plates 1 on the same side are hinged in the vertical direction, so that the side support plate has the freedom to be bent in the length direction of the trench. The side support plate can adapt to the local concave and convex changes of the trench sidewall in the length direction, reducing the situation where the support components cannot fit due to the unevenness of the trench sidewall.

[0050] (vi) The length adjustment of the telescopic beam 2 can be completed on-site according to the actual trench width without the need to pre-customize support components of different specifications, which facilitates flexible adjustment according to the width changes during trench construction.

[0051] Compared with the prior art, the support structure for trench construction provided in this application allows the support width to match the actual width of the trench by adjusting the length of the telescopic beam 2. This reduces the need for frequent replacement of fixed-size support components that cannot be adapted to trenches of different widths, and helps to improve the overall efficiency of trench construction.

[0052] In one optional embodiment, a pressure sensor can be installed at the point where the telescopic beam 2 abuts against the strip plate 1 to monitor the supporting force applied by the telescopic beam 2 to the strip plate 1 in real time. The operator can determine whether the supporting force meets the design requirements based on the reading of the pressure sensor and adjust the length of the telescopic beam 2 in a timely manner to obtain the required supporting force.

[0053] In one alternative embodiment, the outer surface of the telescopic beam 2 may be coated with an anti-corrosion coating to protect the telescopic beam 2 from corrosion in humid or corrosive soil environments and extend the service life of the support structure.

[0054] In one alternative embodiment, the vertical spacing between the two telescopic beams 2 in each set of wide-direction supports can be adjusted according to the depth of the trench and the magnitude of the lateral pressure on the soil. For deeper trenches, the vertical spacing between the two telescopic beams 2 can be increased, or an intermediate beam can be added between the upper and lower telescopic beams 2 to provide support at more locations in the height direction of the strip plate 1, further improving the bending resistance of the side support plate.

[0055] In some embodiments, such as Figure 4 , Figure 8 and Figure 9 As shown, multiple sets of positioning parts are provided on the adjacent sides of the two strip plates 1 in the same group. The multiple sets of positioning parts correspond to multiple sets of width support members respectively. Each set of positioning parts includes two grooves 11 arranged side by side in the vertical direction.

[0056] Based on this, both ends of the telescopic beam 2 are hinged with swing joints 4 in the vertical direction. Each swing joint 4 has a locking structure 5 between itself and the telescopic beam 2, and the swing end of each swing joint 4 is connected with a protrusion 41, which is used to insert into the corresponding groove 11.

[0057] The swing joint 4 achieves a detachable connection between the telescopic beam 2 and the strip plate 1 through the cooperation of the protrusion 41 and the groove 11. When it is necessary to adjust the position of the telescopic beam 2, the operator can remove the protrusion 41 from the groove 11, move the telescopic beam 2 to the target position, and then insert the protrusion 41 into the corresponding groove 11. In an optional embodiment, the cross-section of the groove 11 can be designed as trapezoidal or dovetail-shaped, and the shape of the protrusion 41 is adapted to the groove 11 to enhance the connection stability between the protrusion 41 and the groove 11 and prevent the protrusion 41 from falling out of the groove 11 when under force.

[0058] In some embodiments, such as Figure 16 As shown, both ends of the telescopic beam 2 are provided with hinge slots 72, and the swing joint 4 is inserted into the hinge slots 72 and is hinged to the telescopic beam 2 through the hinge shaft 73. Furthermore, the locking structure 5 includes multiple through holes 51, alignment holes 52, and locking rods 53.

[0059] Multiple perforations 51 are opened at the ends of the telescopic beam 2 and arranged around the hinge shaft 73.

[0060] Alignment hole 52 is provided on swing joint 4 and is adapted to communicate with any of the through holes 51.

[0061] The locking rod 53 is adapted to pass through the through hole 51 and the alignment hole 52 and extend to limit the swing of the swing joint 4 relative to the telescopic beam 2.

[0062] By passing the locking rod 53 through the through hole 51 and the alignment hole 52 at different positions, the swing joint 4 can be locked at different swing angles, thereby adjusting the orientation of the protrusion 41 to adapt to different tilt angles of the strip plate 1 or the orientation of different positioning parts.

[0063] In one alternative embodiment, a handle may be provided at one end of the locking rod 53 so that the handle abuts against the upper surface of the telescopic beam 2, thereby suspending the locking rod 53 and facilitating the operator to perform the insertion and removal operations of the locking rod 53.

[0064] In one alternative embodiment, the opening edge of the perforation 51 may be provided with a guide chamfer to guide the locking rod 53 to be smoothly inserted into the perforation 51, thereby improving the convenience of the locking operation.

[0065] In some embodiments, such as Figures 12 to 15 As shown, the telescopic beam 2 includes a support beam 21 and two adjusting arms 22.

[0066] The support beam 21 is set between the two corresponding strip plates 1, parallel to the width direction of the trench, and a storage groove 211 is opened on the end face of both ends of the beam.

[0067] The two adjusting arms 22 are slidably inserted into the two storage slots 211, and both are adapted to slide to partially extend out of the support beam 21.

[0068] Each of the storage slots 211 has a stop block 6, which is used to abut the insertion end of the adjusting arm 22 to limit the movement of the adjusting arm 22 into the storage slot 211.

[0069] The side of the stop block 6 facing the adjusting arm 22 is inclined, and along the insertion direction of the adjusting arm 22, the inclined surface slopes towards the area between the two adjusting arms 22. When the adjusting arm 22 moves into the receiving groove 211 and abuts the inclined surface of the stop block 6, its insertion end slides along the inclined surface. The inclined surface guides the insertion end of the adjusting arm 22 to deflect towards the inner wall of the receiving groove 211, increasing the friction between the insertion end of the adjusting arm 22 and the inner wall of the receiving groove 211, thereby limiting the retraction of the adjusting arm 22 into the receiving groove 211. At the same time, the inclined surface decomposes part of the thrust of the adjusting arm 22 moving inward into the force along the length of the groove, improving the ability of the adjusting arm 22 to resist the pressure generated by the inward collapse of the inner wall of the groove.

[0070] In one alternative embodiment, the insertion end of the adjusting arm 22 may be provided with a wedge-shaped surface adapted to the inclined surface to increase the contact area between the adjusting arm 22 and the inner wall of the receiving groove 211 and improve the locking effect.

[0071] In one alternative embodiment, a protective cap may be provided at one end of the adjusting arm 22 that extends outside the support beam 21 to prevent dirt or debris from entering the storage groove 211 and affecting the sliding flexibility of the adjusting arm 22.

[0072] In some embodiments, such as Figure 12 , Figure 14 and Figure 15 As shown, the telescopic beam 2 has two sets of positioning holes 212 arranged along its width direction. The two sets of positioning holes 212 are respectively connected to two storage slots 211. Each set of positioning holes 212 includes multiple insertion holes spaced apart along the length direction of the telescopic beam 2. Each insertion hole penetrates the telescopic beam 2 in the vertical direction.

[0073] Accordingly, the stop block 6 has a through hole 61 extending in the vertical direction, which is used to communicate with any one of the corresponding positioning holes 212 in the same group. In addition, each stop block 6 is provided with a connecting bolt 62, which is adapted to pass through the insertion hole and the connecting hole 61 and protrude, and the protruding part is threadedly connected to a connecting nut 621.

[0074] By passing the connecting bolt 62 through the insertion hole and the connecting hole 61 at different positions, the stop block 6 can be fixed at different positions in the storage groove 211, thereby adjusting the extension limit length of the adjusting arm 22.

[0075] In some embodiments, such as Figure 12 , Figure 13 and Figure 16As shown, a threaded sleeve 221 is connected to the extended end face of the adjusting arm 22. The central axis of the threaded sleeve 221 is parallel to the length direction of the adjusting arm 22. Based on this, an adjusting screw 71 that is threadedly engaged with the threaded sleeve 221 is provided on the threaded sleeve 221. A mating seat 7 is connected to the end of the adjusting screw 71 away from the threaded sleeve 221. The mating seat 7 is used to abut against the strip plate 1.

[0076] By rotating the adjusting screw 71, the extension length of the docking seat 7 relative to the adjusting arm 22 can be finely adjusted, so as to achieve precise adjustment of the total length of the telescopic beam 2 and make the two ends of the telescopic beam 2 closely abut against the strip plate 1.

[0077] In one alternative embodiment, the adjusting screw 71 and the mating seat 7 can be connected by a ball joint, so that the mating seat 7 can rotate relative to the adjusting screw 71 within a certain angle range to accommodate the slight tilt of the strip plate 1.

[0078] In one optional embodiment, a locking nut may be provided on the adjusting screw 71. After the adjustment is completed, the locking nut is tightened to the end face of the threaded sleeve 221 to prevent the adjusting screw 71 from rotating under force, which would cause the length of the telescopic beam 2 to change.

[0079] In some embodiments, such as Figure 10 As shown, the upper and lower ends of the reinforcing vertical beam 3 are provided with first arc-shaped grooves 31 suitable for the threaded sleeve 221 to be partially embedded, and a limit cover 8 is also hinged thereto.

[0080] The limiting cover 8 is suitable for swinging to abut against the reinforcing vertical beam 3, and the inner side of the limiting cover 8 is provided with a second arc-shaped groove 81. The first arc-shaped groove 31 and the second arc-shaped groove 81 are combined to form a circular hole surrounding the threaded sleeve 221.

[0081] Through the cooperation of the first arc groove 31 and the second arc groove 81, the end of the reinforcing vertical beam 3 can be fitted onto the outer periphery of the threaded sleeve 221, thereby realizing the rapid connection and positioning between the reinforcing vertical beam 3 and the telescopic crossbeam 2.

[0082] In one alternative embodiment, the inner walls of the first arc groove 31 and the second arc groove 81 may be provided with elastic pads to absorb the fitting gap between the threaded sleeve 221 and the arc groove, thereby reducing vibration and noise generated under stress.

[0083] In one alternative embodiment, a torsion spring may be provided between the limiting cover 8 and the reinforcing vertical beam 3, so that the limiting cover 8 tends to close towards the reinforcing vertical beam 3 when it is not subjected to external force, which facilitates automatic clamping of the threaded sleeve 221 during installation.

[0084] In some embodiments, such as Figure 9 and Figure 10As shown, a first mounting hole 32 is provided on the end face of the reinforcing vertical beam 3, and a second mounting hole 82 is provided on the swing end of the limiting cover 8 for coaxial communication with the first mounting hole 32. Each limiting cover 8 is provided with a mounting bolt 83, which is adapted to pass through the first mounting hole 32 and the second mounting hole 82 and protrude, and the protruding part is threadedly connected to a mounting nut 831. After the limiting cover 8 is closed, the limiting cover 8 is fixedly connected to the reinforcing vertical beam 3 by the cooperation of the mounting bolt 83 and the mounting nut 831, preventing the limiting cover 8 from being accidentally opened due to vibration or external force during use.

[0085] In one alternative embodiment, an anti-loosening washer may be provided between the mounting bolt 83 and the mounting nut 831 to prevent the mounting nut 831 from loosening due to vibration during long-term use.

[0086] In some embodiments, such as Figure 2 and Figure 5 As shown, on the same side of the trench, the outer ends of the two strip plates 1 located at the ends are hinged to limit plates 9 in the vertical direction. The limit plates 9 have guide holes 91 that extend through the thickness direction, and limit stakes 92 for insertion into the side of the trench are inserted into the guide holes 91.

[0087] Limiting plates 9 are installed at both ends of the side support plate along the length of the trench. The limiting piles 92 are inserted into the soil at the end of the trench to fix the end of the strip plate 1 to the side wall of the trench, preventing the strip plate 1 from sliding or displacing along the length of the trench when subjected to lateral earth pressure.

[0088] In one alternative embodiment, the lower end of the limiting pile 92 may be provided with a pointed tip to facilitate insertion into the soil, and the upper end may be provided with a striking cap to facilitate driving it into the soil using a hammering tool.

[0089] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, on the same side of the groove, there is a connecting plate 12 between two adjacent strip plates 1, and the two strip plates 1 are hinged together by the connecting plate 12. Specifically, each connecting plate 12 is hinged to the corresponding two strip plates 1 on both sides, so that the two strip plates 1 can swing relative to each other until their surfaces come into contact.

[0090] The connecting plate 12 serves as a hinged transition between adjacent strip plates 1, allowing the strip plates 1 on the same side to be folded into a compact block shape when not in use (e.g., Figure 7 (As shown), it is convenient for storage and transportation.

[0091] In one optional embodiment, a limiting structure may be provided at the hinge joint between the connecting plate 12 and the strip plate 1 to limit the swing angle of the strip plate 1 relative to the connecting plate 12 within a predetermined range, so as to prevent the swing angle of the strip plate 1 from being too large in the unfolded state and affecting the stability of the support.

[0092] In one alternative embodiment, the main body of the connecting plate 12 is a columnar structure, and the outer peripheral wall of the columnar structure has a flat plate structure extending radially outward. The flat plate structure can serve as a handle to facilitate the operator to carry and unfold the side support plate in the folded state.

[0093] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A support structure for trench construction, characterized in that, include: Multiple sets of side support plates are arranged inside the trench along its length. Each set of side support plates includes two strip plates, which respectively abut against opposite sides within the trench. On the same side of the trench, adjacent strip plates are hinged vertically. Multiple sets of support components, each corresponding to multiple sets of the side support plates; each set of support components is disposed between two corresponding strip plates, including multiple sets of width-direction support members arranged along the length direction of the strip plates; Each set of the width-direction support members includes: Two telescopic beams are spaced apart vertically between corresponding strip plates, with each telescopic beam abutting against both ends of the two strip plates respectively; and Two reinforcing vertical beams are arranged side by side between the two telescopic horizontal beams along the width of the trench and are close to the two strip plates respectively; both ends of each reinforcing vertical beam are connected to the two telescopic horizontal beams respectively.

2. The support structure for trench construction as described in claim 1, characterized in that, Multiple sets of positioning parts are provided on the adjacent sides of the two strip plates in the same group. The multiple sets of positioning parts correspond to the multiple sets of width support members respectively. Each set of positioning parts includes two grooves arranged side by side in the vertical direction. Both ends of the telescopic beam are hinged with swing joints in the vertical direction; each swing joint has a locking structure with the telescopic beam, and the swing end of each swing joint is connected with a protrusion, which is used to insert into the corresponding groove.

3. The support structure for trench construction as described in claim 2, characterized in that, Both ends of the telescopic beam are provided with hinge slots, the swing joint is inserted into the hinge slots, and is hinged to the telescopic beam via a hinge shaft; and the locking structure includes: Multiple perforations are formed at the ends of the telescopic crossbeam and arranged around the hinge axis; Alignment holes, formed on the swing joint, adapted to communicate with any of the through holes; and A locking lever, adapted to pass through the perforation and the alignment hole and extend outward, restricts the swing of the swing joint relative to the telescopic beam.

4. The support structure for trench construction as described in any one of claims 1-3, characterized in that, The telescopic beam includes: A support beam is positioned between two corresponding strip plates, parallel to the width direction of the trench, and has a receiving groove on each end face; and Two adjusting arms are slidably inserted into the two storage slots respectively, and both are adapted to slide to partially extend out of the support beam; Each of the storage slots has a stop block, which abuts against the insertion end of the adjusting arm to restrict the movement of the adjusting arm into the storage slot; the side of the stop block facing the adjusting arm is inclined, and along the insertion direction of the adjusting arm, the inclined surface is inclined toward the area between the two adjusting arms.

5. The support structure for trench construction as described in claim 4, characterized in that, The telescopic beam has two sets of positioning holes arranged along its width direction. The two sets of positioning holes are respectively connected to the two storage slots. Each set of positioning holes includes multiple insertion holes spaced apart along the length direction of the telescopic beam. Each insertion hole penetrates the telescopic beam in the vertical direction. The actuating block has a through hole running vertically, which is used to communicate with any one of the insertion holes in the corresponding group of positioning holes. Each of the aforementioned actuating blocks is provided with a mating bolt, which is adapted to pass through the insertion hole and the mating hole and extend outward, and the extended portion is threadedly connected to a mating nut.

6. The support structure for trench construction as described in claim 4, characterized in that, A threaded sleeve is connected to the extended end face of the adjusting arm, and the central axis of the threaded sleeve is parallel to the length direction of the adjusting arm; an adjusting screw is provided on the threaded sleeve and is threadedly engaged with it, and a mating seat is connected to the end of the adjusting screw away from the threaded sleeve, and the mating seat is used to abut against the strip plate.

7. The support structure for trench construction as described in claim 6, characterized in that, Both ends of the reinforcing vertical beam are provided with a first arc-shaped groove suitable for the threaded sleeve to be inserted, and a limit cover is also hinged thereto. The limiting cover is adapted to swing to abut against the reinforcing vertical beam, and a second arc-shaped groove is provided on the inner side of the limiting cover. The first arc-shaped groove and the second arc-shaped groove are combined to form a circular hole surrounding the threaded sleeve.

8. The support structure for trench construction as described in claim 7, characterized in that, The end face of the reinforcing vertical beam is provided with a first mounting hole, and the swing end of the limiting cover is provided with a second mounting hole for coaxial communication with the first mounting hole. Each of the limiting covers is provided with a mounting bolt, which is adapted to pass through the first mounting hole and the second mounting hole and extend outward, and the extended part is threadedly connected to a mounting nut.

9. The support structure for trench construction as described in claim 1, characterized in that, On the same side of the trench, the outer ends of the two strip plates located at the ends are hinged with limit plates in the vertical direction; The limiting plate has a guide hole that extends along the thickness direction, and a limiting stake for insertion into the side of the trench is inserted into the guide hole.

10. The support structure for trench construction as described in claim 1 or 9, characterized in that, On the same side of the trench, there is a connecting plate between two adjacent strip plates; Each of the connecting plates is hinged to two corresponding strip plates on both sides, so that the two strip plates can swing relative to each other until their surfaces come into contact.

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