Portable sliding type groove supporting structure

Abstract

The utility model relates to the technical field of pipeline construction, in particular to a portable sliding type groove supporting structure which comprises a jacking assembly, an abutting assembly and an extending assembly, and the two sides of the jacking assembly are used for being connected with supporting piles in a groove; the abutting assembly is arranged on the jacking assembly and can abut against the extending assemblies arranged on the two sides of the jacking assembly so as to improve the abutting force of the jacking assembly to the supporting piles on the two sides. The supporting assembly comprises a supporting piece and a sliding piece, the sliding piece is arranged on the side wall of the supporting piece and abuts against the supporting pile, the extending assembly is movably arranged on the inner side of the sliding piece, and the abutting assembly is arranged on the supporting piece and abuts against the extending assembly on the inner side of the sliding piece. According to the invention, the efficiency of pipeline construction in narrow spaces such as roadways and the like can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of pipeline construction, and in particular to a portable sliding trench support structure. Background Technology

[0002] Excavating trenches and constructing trench support structures are important aspects of pipeline construction. Among them, trench support structures are structures that support and reinforce the trench sidewalls and surrounding environment to ensure the safety of underground structures and the surrounding environment of the trench.

[0003] Currently, during the construction of municipal sewage pipe networks, in narrow alleys where large mobile construction machinery cannot easily enter or turn, the majority of construction work involves DN200 PVC septic tank outlet pipes and DN300 PE threaded pipes. Generally, trench excavation with a depth of more than 1.5 meters and no more than 2 meters is carried out. Due to the inconvenience of using mobile machinery for excavation, most of the work is done manually. Moreover, there is no working surface to adopt slope operation. During excavation, the upper part of the trench is prone to soil landslides and collapses, which slows down the progress of pipeline construction in the alley and is time-consuming and labor-intensive. Utility Model Content

[0004] In order to effectively improve the efficiency of pipeline construction in narrow spaces such as alleyways, this application provides a portable sliding trench support structure.

[0005] The portable sliding trench support structure provided in this application adopts the following technical solution:

[0006] A portable sliding trench support structure includes: a top support component, a pressing component, and an extension component. The two sides of the top support component are used to connect the support piles inside the trench. The pressing component is disposed on the top support component and can press against the extension components disposed on both sides of the top support component to increase the pressing force of the top support component against the support piles on both sides.

[0007] The top support assembly includes a support member and a sliding member. The sliding member is disposed on the side wall of the support member and abuts against the support pile. The extension member is movably disposed on the inner side of the sliding member. The pressing member is disposed on the support member and abuts against the extension member on the inner side of the sliding member.

[0008] By adopting the above technical solution, the top support component can abut against the side wall of the support pile inside the trench, and the pressing component can press against the extension component, so that the two sides of the top support component can stably press against the side wall of the support pile, thereby effectively enhancing the stability of the soil on both sides of the pipeline trench during excavation and construction, reducing the need to repeatedly repair the collapsed soil in the trench during excavation and construction, and thus improving the efficiency of pipeline construction in narrow spaces such as tunnels.

[0009] Furthermore, compared to existing pipeline trench excavation construction, the technical solution of this application, through the combined use of support components and sliding components, enables the sliding components on both sides of the support component to stably abut against the support piles on both sides of the trench under the action of the pressure-bearing component, thereby improving the tightness stability between the extension component and the support piles; at the same time, the sliding components can move at the side walls of the support piles on both sides, so as to flexibly change the position of the support structure of this application according to the location of the trench excavation, so as to facilitate the purpose of abutting and supporting multiple different locations in the trench through the support structure, thereby better facilitating the excavation of soil at different locations in the trench.

[0010] Optionally, the pressing assembly includes: an ejector and a clamping member, wherein the ejector is disposed through the support member and can abut against the extension assembly inside the sliding member, and the clamping member is disposed outside the ejector and abuts against the surface of the support member, and the ejector presses against the support member and the sliding member through the clamping member.

[0011] By adopting the above technical solution, the ejector can push and drive the extension component inside the sliding component, so that the extension component can stably press against the side walls of the support piles on both sides. At the same time, the setting of the pressing component can also enhance the connection stability between the ejector and the support component, thereby further effectively improving the pressing degree of the extension component against the inside of the support pile.

[0012] Optionally, the extension component includes: a connector and a first extension member, wherein the connector is movably disposed inside the support member and the sliding member and can abut against the ejector member, and the first extension member is disposed at one end of the connector and penetrates the sliding member to abut against the support pile.

[0013] By adopting the above technical solution, the connector can effectively push out the first extension member under the abutment of the ejector, so that the first extension member can continuously press against the side wall of the support pile, thereby improving the support stability of the support structure of this application on the inner wall of the trench.

[0014] Optionally, the pressing component further includes a limiting member, which is movably disposed on the outer wall of one end of the ejector and the support member, and the limiting member and the support member abut against the other side of the connecting pressing member.

[0015] By adopting the above technical solution, the limiting member can be connected to one end of the ejector member that penetrates the support member, and the connection stability between the ejector member and the support member can be better improved by the clamping action on the other side wall of the support member connecting the clamping member, thereby further enhancing the abutment strength of the first extension member against the side wall of the support pile.

[0016] Optionally, the top support assembly further includes: a first receiving member, a second receiving member, and a second extension member. The first receiving member and the second receiving member are slidably connected to both sides of the support member, and the second extension member is disposed outside the first receiving member and the second receiving member and can abut against the support piles on both sides.

[0017] By adopting the above technical solution, the first receiving member and the second receiving member can extend on both sides of the support member, and can respectively abut against the inner wall of the support pile on both sides through the second extension member on its side wall, thereby better improving the adaptability of the support structure of this application to different trench sizes.

[0018] Optionally, the pressure-bearing assembly further includes a positioning element, which is disposed through the support element and slides in cooperation with the ejector element, the first receiving element, and the second receiving element, so as to abut and position itself against the support piles on both sides.

[0019] By adopting the above technical solution, the positioning component can better enhance the clamping effect of the first and second receiving components on the inner walls of the support piles on both sides by clamping and positioning with the support piles on both sides, thereby further enhancing the overall stability of the support structure of this application during support use.

[0020] Optionally, the top support assembly further includes a locking member, which is disposed on the side wall of the support member and connected to the positioning member, so as to realize the positioning of the first receiving member and the second receiving member on both sides of the support member through the connection of the locking member and the positioning member.

[0021] By adopting the above technical solution, the locking component can be connected with the positioning component, thereby restricting the position of the positioning component on the side wall of the first and second receiving components. At the same time, by limiting the positioning component, the positions of the first and second receiving components on both sides of the support component are locked, thereby more effectively improving the clamping effect of the first and second receiving components on the support piles on both sides.

[0022] Optionally, the pressing component further includes an extension member and a limiting member. The extension member is movably disposed on the side wall of the positioning member and is connected and limited to the positioning member through the limiting member, so as to improve the tightness of the positioning member against the support pile through the extension member.

[0023] By adopting the above technical solution, the extension can facilitate the positioning component to change its length according to the size of the trench, and the placement of the extension on the positioning component can be restricted by the limiting component, thereby further enhancing the overall stability of the support structure of this application when it is tightened and positioned against the support piles on both sides.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The top support component can abut against the sidewalls of the support piles inside the trench, and the pressing component further presses against the extension component, ensuring stable abutment against the sidewalls of the support piles on both sides of the top support component. This effectively enhances the stability of the soil on both sides of the pipeline trench during excavation, reducing the need for repeated repairs of collapsed soil within the trench, and thus improving the efficiency of pipeline construction in narrow spaces such as tunnels. Furthermore, compared to existing pipeline trench excavation methods, the technical solution in this application utilizes support components... When used in conjunction with the sliding components, the sliding components on both sides of the support member can stably abut against the support piles on both sides of the trench under the action of the pressing component, thereby improving the clamping stability between the extension component and the support piles. At the same time, the sliding components can move along the side walls of the support piles on both sides, so as to flexibly change the position of the support structure according to the location of the trench excavation. This achieves the purpose of facilitating clamping support at multiple different locations in the trench through the support structure, thereby better facilitating soil excavation operations at different locations within the trench.

[0026] 2. By setting the first and second receiving parts, the support can be extended on both sides of the support, and the inner walls of the support piles on both sides can be pressed together by the second extension parts on their side walls, thereby improving the adaptability of the support structure of this application to different trench sizes.

[0027] 3. By setting up positioning components, the first and second receiving components can be better positioned against the inner walls of the supporting piles on both sides, thereby further enhancing the overall stability of the support structure of this application during support use.

[0028] 4. By setting a locking component, it can be connected with the positioning component, thereby restricting the position of the positioning component on the side wall of the first and second receiving components. At the same time, by limiting the positioning component, the positions of the first and second receiving components on both sides of the support component are locked, thereby more effectively improving the clamping effect of the first and second receiving components on the support piles on both sides. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of the trench support structure, support piles, and cross bracing channel steel in Embodiment 1 of this application;

[0030] Figure 2 This is a front view schematic diagram of the top support component, the pressure component, the extension component, and the cross brace channel steel in Embodiment 1 of this application;

[0031] Figure 3 This is an exploded structural diagram of the support component and the extension component according to Embodiment 1 of this application;

[0032] Figure 4 This is a structural schematic diagram of the trench support structure, support piles, and cross bracing channel steel in Embodiment 2 of this application;

[0033] Figure 5 This is a schematic diagram of the structure of the support component and the pressure component in Embodiment 2 of this application;

[0034] Figure 6 This is a structural schematic diagram of the support component and the pressure component from another perspective in Embodiment 2 of this application;

[0035] Figure 7 This is an exploded structural diagram of the support member, the second receiving member, and the first extension member according to Embodiment 2 of this application;

[0036] Figure 8 This is a schematic diagram of the structure of the pressing component and the extension component in Embodiment 2 of this application;

[0037] Figure 9 yes Figure 8 Enlarged view of section A;

[0038] Figure 10 This is a schematic diagram of the structure of the second receiving component in Embodiment 2 of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Top support assembly; 11. Support member; 111. Mounting hole; 112. Guide hole; 12. Sliding member; 13. First receiving member; 14. Second receiving member; 15. Second extension member; 16. Locking member; 17. Positioning groove; 171. Slide groove; 18. Locking hole; 2. Pressing assembly; 21. Ejector; 211. Lower pressing block; 22. Pressing member; 23. Limiting member; 24. Positioning member; 241. Lifting part; 2 42. First reinforcing part; 242a. First receiving groove; 242b. Second receiving groove; 243. Protrusion; 244. Spring; 245. Slider; 246. Second reinforcing part; 246a. Fixed length hole; 246b. Locking member; 25. Extension member; 26. Limiting member; 27. Fixing member; 28. Clamping member; 3. Extension assembly; 31. Connecting member; 32. First extension member; 33. Relief hole; 4. Support pile; 5. Cross brace channel steel. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0041] Example 1

[0042] This application discloses a portable sliding trench support structure. (Refer to...) Figure 1-2The trench support structure includes a top support assembly 1, a pressure-retaining assembly 2, and an extension assembly 3. Support piles 4 are installed on both sides of the trench along its extension direction, and a transverse bracing channel steel 5 is installed on the inner wall of each support pile 4, with the extension direction of the transverse bracing channel steel 5 consistent with the extension direction of the trench. The two ends of the top support assembly 1 are respectively abutted against the bottom of the grooves of the transverse bracing channel steel 5 on both sides, while the extension assembly 3 is slidably mounted on both sides of the top support assembly 1 and abuts against the sidewalls of the grooves of the transverse bracing channel steel 5. Additionally, the pressure-retaining assembly 2 is movably mounted on the top support assembly 1 and abuts against the extension assembly 3.

[0043] In use, the two sides of the top support component 1 can be directly abutted against the grooves of the horizontal support channel steel 5 on both sides inside the trench. Then, the pressing component 2 is connected to the top support component 1, and the pressing component 2 is used to squeeze the extension components 3 on both sides of the top support component 1. This allows the top support component 1 to effectively press and position the groove sidewalls of the horizontal support channel steel 5 on both sides inside the trench through the extension components 3 on both sides, thereby enhancing the stability of the inner wall of the trench during excavation.

[0044] Reference Figure 2-3 In this embodiment, the top support assembly 1 includes a support member 11 and a sliding member 12. The support member 11 is disposed inside the trench, and both sides of the support member 11 are abutted against the bottom wall of the groove of the cross bracing channel steel 5 on both sides of the trench through the sliding member 12.

[0045] In this embodiment, the pressing component 2 includes an ejector 21 and a clamping component 22. A mounting hole 111 is provided in the middle of the support member 11. The ejector 21 passes through the mounting hole 111 in the middle of the support member 11 and is threaded into the mounting hole 111. The sidewall of the ejector 21 can abut against the extension component 3 disposed inside the support member 11. The clamping component 22 is installed on the top wall of the support member 11, and the clamping component 22 is slidably sleeved on the outer wall of the ejector 21.

[0046] Reference Figure 2-3 In this embodiment, the extension component 3 includes a connector 31 and a first extension member 32. Two connectors 31 are symmetrically arranged, each slidably mounted on both sides of the support member 11. One end of each connector 31 penetrates into the mounting hole 111 in the middle of the support member 11 and abuts against the side wall of the ejector member 21. One end of the first extension member 32 is fixed to the end of the connector 31 away from the ejector member 21, and the other end of the first extension member 32 penetrates the sliding member 12 and abuts against the groove side wall of the corresponding horizontal support channel steel 5 in the groove. In this embodiment, the side of each connector 31 closest to the ejector member 21 is designed as an inclined surface.

[0047] In this embodiment, the pressing component 2 also includes a limiting member 23. The limiting member 23 is sleeved on the outer wall of the ejector 21 that extends to the bottom of the support member 11, and the limiting member 23 is threadedly engaged with the outer wall of the ejector 21.

[0048] Working principle: In use, the support member 11 is first placed in the groove and aligned with the grooves of the cross bracing channel steel 5 on both sides. Then, the two sides of the support member 11 are respectively abutted against the bottom of the grooves of the cross bracing channel steel 5 on both sides by two sliding members 12. Next, the ejector 21 is threadedly connected to the mounting hole 111 in the middle of the support member 11, and the lower pressure block 211 set on the top of the ejector 21 abuts against the top of the clamping member 22. At this time, the connecting member 31 can move under the action of the ejector 21. The first extension 32 is moved away from the mounting hole 111 under the drive of the connector 31 until it abuts against the groove sidewall of the cross brace channel steel 5, so as to support the two side walls of the trench. Finally, the limiting member 23 and the ejector 21 are threaded to the outer wall of the bottom of the support member 11 and the limiting member 23 abuts against the bottom of the support member 11, so as to effectively improve the overall stability of the support structure of this application when supporting the inner wall of the trench.

[0049] In addition, when it is necessary to excavate the next location inside the trench, first unscrew the limiting member 23 from the bottom end of the ejector 21, then unscrew the ejector 21 from the mounting hole 111, and then retract the first extension blocks on both sides into the interior of the corresponding sliding blocks. Next, when the support member 11 is moved along the extension direction of the trench to the center of the next trench excavation area, the ejector 21 is screwed into the mounting hole 111 again. The first extension blocks on both sides are used to apply pressure to the soil on both sides for support. After the support work is completed, the subsequent manual excavation work continues in the trench.

[0050] Example 2

[0051] The difference between Example 2 and Example 1 is that, referring to... Figure 4-6 In this embodiment, the top support assembly 1 further includes a first receiving member 13 and a second receiving member 14. The first receiving member 13 and the second receiving member 14 are slidably mounted on both sides of the inner wall of the support member 11, and extend into the interior of the corresponding sliding members 12 on both sides of the support member 11, penetrating to the outer side of the sliding members 12. In this embodiment, the cross-sections of the first receiving member 13 and the second receiving member 14 are both U-shaped, and the tops of the first receiving member 13 and the second receiving member 14 are slidably engaged with the first extension members 32 inside the two sliding members 12.

[0052] Meanwhile, a second extension 15 is provided on the side wall of the first receiving member 13 and the second receiving member 14 that extends to the outside of the sliding member 12, so that the second extension 15 on the outer wall of the first receiving member 13 and the second receiving member 14 can respectively abut against the groove side wall of the horizontal support channel steel 5 on both sides inside the groove.

[0053] Reference Figure 5-7 The pressing component 2 also includes a positioning member 24. The positioning member 24 is U-shaped, and its two ends pass through the top of the pressing member 22 and the support member 11 respectively. At the same time, both ends of the positioning member 24 passing through the support member 11 can abut against the inner wall of the groove.

[0054] In this embodiment, the positioning member 24 includes a lifting part 241 and a first reinforcing part 242. The lifting part 241 is U-shaped and its inner top wall can abut against multiple mating grooves opened on the top wall of the lower pressing block 211. At the same time, two first reinforcing parts 242 are provided, and the two first reinforcing parts 242 are respectively hinged to the two ends of the bottom of the lifting part 241.

[0055] Reference Figure 8-10 To facilitate the positioning of the first receiving member 13 and the second receiving member 14, protrusions 243 are provided on both outer walls of the hinge point between the lifting part 241 and the first reinforcing part 242. Positioning grooves 17 are provided on both inner walls of the first receiving member 13 and the second receiving member 14, and are slidably connected to the protrusions 243. The positioning grooves 17 are generally L-shaped, and a sliding groove 171 is provided at the top of the positioning grooves 17. A spring 244 is provided at the top of the protrusions 243, and a slider 245 is provided at the end of the spring 244 away from the protrusions 243, and is slidably connected to the sliding groove 171. In this embodiment, the sliding groove 171 can be a dovetail groove, and the slider 245 can be a dovetail block.

[0056] Furthermore, to facilitate the sliding of the connector 31 and the first extension 32 within the sliding member 12 and the support member 11, a clearance hole 33 is provided through the connector 31, extending to the end of the first extension 32 near the connector 31. Additionally, to facilitate angle adjustment of the first reinforcing part 242, a guide hole 112 with a diameter larger than that of the first reinforcing part 242 is provided through the support member 11.

[0057] Reference Figure 5-6In this embodiment, the positioning member 24 further includes a second reinforcing part 246. A first receiving groove 242a is provided on the inner wall of each first reinforcing part 242, near the bottom wall of the support member 11. Two second reinforcing parts 246 are provided, each hinged to the bottom of the inner sidewall of the two first receiving grooves 242a. The bottom wall of one end of each second reinforcing part 246 abuts against the inner bottom wall of the corresponding first receiving groove 242a. Simultaneously, the ends of the two second reinforcing parts 246 that are close to each other are both configured as inclined surfaces that can abut against the bottom end of the ejector member 21.

[0058] In this embodiment, both second reinforcing parts 246 can be telescopic rods. Multiple length-fixing holes 246a are provided on the sidewalls of the second reinforcing parts 246, and locking members 246b with threaded engagement with the length-fixing holes 246a are provided on the sidewalls of the second reinforcing parts 246 to limit the elongation of the second reinforcing parts 246 by means of locking screws. In this embodiment, the locking member 246b can be a screw.

[0059] Reference Figure 4-5 To improve the stability of the first receiving member 13 and the second receiving member 14, multiple locking holes 18 are provided along the length direction on the outer wall of one side of the first receiving member 13 and the second receiving member 14. In this embodiment, the top support assembly 1 also includes a locking member 16. A positioning hole is provided on the side wall of the support member 11, and the locking member 16 passes through the positioning hole and extends to be threadedly connected to the corresponding protrusion 243. In this embodiment, the locking member 16 can be a screw.

[0060] In use, first adjust the extension length of the first receiving part 13 and the second receiving part 14 on both sides of the support 11 according to the width of the groove. When adjusting, first pull up the lifting part 241 and make the protrusions 243 on the side walls of the two first reinforcing parts 242 rise in the corresponding positioning grooves 17. Then move the first receiving part 13 and the second receiving part 14 to the appropriate distance on both sides. Then tighten the locking part 16 to pass through the locking holes 18 at the corresponding positions on the side walls of the first receiving part 13 and the second receiving part 14, and make a threaded connection with the protrusions 243 to achieve the positioning of the first receiving part 13 and the second receiving part 14.

[0061] Next, the support member 11 is placed in the corresponding position in the trench, so that the bottom ends of the two first reinforcement parts 242 abut against the inner bottom wall of the trench. Then, the first receiving member 13 and the second receiving member 14 are respectively abutted against the groove sidewalls of the cross bracing channel steel 5 on both sides through the second extension part 15 on them. Then, the ejector 21 is turned so that the bottom end of the ejector 21 abuts against the second reinforcement parts 246 on both sides at the same time. The ejector 21 further enhances the abutting effect of the two first reinforcement parts against the inner bottom wall of the trench, thereby better enhancing the overall stability of the support structure of this application when supporting both sides of the trench.

[0062] Reference Figure 4-6 In order to facilitate better contact between the two first reinforcing members and the inner wall of the trench, the pressing assembly 2 further includes an extension member 25 and a limiting member 26 in this embodiment. The extension member 25 is hinged within the second receiving groove 242b opened in the lower half of the outer wall of the first reinforcing member, while the limiting member 26 is disposed at the hinge point between the extension member 25 and the first reinforcing member. Simultaneously, to improve the supporting stability of the extension member 25, a clamping member 28 is detachably provided at the end of the extension member 25 away from the first reinforcing member via a fixing member 27, and the extending direction of the clamping member 28 is perpendicular to the extending direction of the extension member 25. Furthermore, in this embodiment, both the limiting member 26 and the fixing member 27 can be selected as a screw and a nut.

[0063] In use, the extension 25 is first flipped out of the second receiving groove 242b according to the width and depth of the trench. Then, the clamping member 28 is assembled on the end of the extension 25 away from the first reinforcement member through the fixing member 27, and the first reinforcement member is made to abut against the junction of the inner side wall and bottom wall of the trench through the extension 25 and the clamping member 28. Then, the screw of the limiting member 26 passes through the side wall of the first reinforcement member and the extension 25 from one side of the first reinforcement member and exits from the other side of the first reinforcement member. Then, the nut of the limiting member 26 is threaded to the end of the screw that passes through the first reinforcement member and abuts against the side wall of the first reinforcement member, thereby limiting the flipping angle of the extension 25 and achieving the purpose of better improving the adaptability of the support structure of this application to trenches of different sizes.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable sliding trench support structure, characterized in that, include: The top support assembly (1), the pressing assembly (2), and the extension assembly (3) are provided. The top support assembly (1) is used to connect the support piles (4) inside the trench on both sides. The pressing assembly (2) is set on the top support assembly (1) and can press against the extension assembly (3) set on both sides of the top support assembly (1) to increase the pressing force of the top support assembly (1) against the support piles (4) on both sides. A cross bracing channel steel (5) is provided on the inner wall of each support pile (4). The extension direction of the cross bracing channel steel (5) is consistent with the extension direction of the trench. The top support assembly (1) includes a support member (11) and a sliding member (12). The sliding member (12) is disposed on the side wall of the support member (11) and abuts against the support pile (4). Both sides of the support member (11) abut against the bottom wall of the groove of the cross bracing channel steel (5) on both sides of the trench through the sliding member (12). The extension assembly (3) is movably disposed on the inner side of the sliding member (12). The pressing assembly (2) is disposed on the support member (11) and abuts against the extension assembly (3) on the inner side of the sliding member (12).

2. The portable sliding trench support structure according to claim 1, characterized in that, The pressing component (2) includes an ejector (21) and a clamping component (22). The ejector (21) is disposed through the support (11) and can abut against the extension component (3) inside the sliding component (12). The clamping component (22) is disposed outside the ejector (21) and abuts against the surface of the support (11). The ejector (21) presses against the support (11) and the sliding component (12) through the clamping component (22).

3. A portable sliding trench support structure according to claim 2, characterized in that, The extension component (3) includes a connector (31) and a first extension (32). The connector (31) is movably disposed inside the support (11) and the sliding member (12) and can abut against the ejector (21). The first extension (32) is disposed at one end of the connector (31) and penetrates the sliding member (12) to abut against the support pile (4).

4. A portable sliding trench support structure according to claim 2, characterized in that, The pressing component (2) further includes a limiting member (23), which is movably disposed on the outer wall of one end of the ejector (21) penetrating the support member (11), and the limiting member (23) and the support member (11) abut against the other side of the connecting clamping member (22).

5. A portable sliding trench support structure according to claim 2, characterized in that, The top support assembly (1) further includes: a first receiving member (13), a second receiving member (14) and a second extension member (15). The first receiving member (13) and the second receiving member (14) are slidably connected to both sides of the support member (11). The second extension member (15) is disposed outside the first receiving member (13) and the second receiving member (14) and can abut against the support piles (4) on both sides.

6. A portable sliding trench support structure according to claim 5, characterized in that, The pressure-blocking component (2) further includes a positioning element (24), which is disposed through the support element (11) and slides in cooperation with the ejector element (21), the first receiving element (13) and the second receiving element (14) to abut and position itself against the support piles (4) on both sides.

7. A portable sliding trench support structure according to claim 6, characterized in that, The top support assembly (1) further includes a locking member (16), which is disposed on the side wall of the support member (11) and connected to the positioning member (24) so ​​as to realize the positioning of the first receiving member (13) and the second receiving member (14) on both sides of the support member (11) through the connection of the locking member (16) and the positioning member (24).

8. A portable sliding trench support structure according to claim 7, characterized in that, The pressing component (2) further includes an extension (25) and a limiting component (26). The extension (25) is movably disposed on the side wall of the positioning component (24) and is connected and limited to the positioning component (24) by the limiting component (26) so as to improve the tightness of the positioning component (24) against the support pile (4) by the extension (25).

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