Supporting structure for highway subgrade construction

Abstract

The application discloses a supporting structure for highway subgrade construction and relates to the field of highway construction, which comprises a supporting plate used for being attached to the side wall of a groove, the supporting plate comprises a first part and a second part which is slidably arranged on the first part, and a gap compensation mechanism is arranged between the first part and the second part; the gap compensation mechanism comprises a sliding groove which is arranged on the first part, the sliding groove comprises a vertical section and an inclined section, a sliding rod is fixedly connected to the second part, and the sliding rod is slidably connected with the sliding groove. The supporting structure for highway subgrade construction is characterized in that when the supporting plate is installed, the first part is first pressed into the groove, then the second part is controlled to move upward alone, and in the process, the sliding rod slides along the sliding groove; when the sliding rod enters the inclined section from the vertical section, the second part is driven to move towards the inner wall of the groove, so that the second part is attached to the groove, and the supporting effect of the supporting plate is improved.

Description

Technical Field

[0001] This invention relates to the field of highway construction, and more specifically to a support structure for highway subgrade construction. Background Technology

[0002] As is well known, before the construction of some roadbeds, it is necessary to first rectify the drainage pipes underneath. The specific rectification process includes using an excavator to dig trenches along the direction of the pipes to inspect and maintain the drainage system. During this process, in order to ensure the safety of the workers, protective plates need to be erected against the inner wall of the trench to support the inner walls on both sides of the trench.

[0003] For example, the Chinese patent document with authorization announcement number CN119411607B, announcement date April 21, 2026, entitled "A Prefabricated Crossbeam Support Device and Method Suitable for Narrow Trench Applications," includes: a prefabricated crossbeam unit assembled from a bottom-inserted template and a conventional assembly template, an inter-plate support unit, and a self-vibrating settlement unit fixedly installed on the surface of the prefabricated crossbeam unit. This invention achieves a detachable division of the integrated crossbeam, realizing a prefabricated crossbeam composed of a bottom-inserted template and a conventional assembly template. This effectively solves the technical problem that while an integrated support structure can achieve the support effect, it requires separate customization for support of trenches of different depths and widths, increasing manufacturing costs and making loading, unloading, and turnover inconvenient. Furthermore, the stiffening ribs are all made of steel, solving the technical problem of poor strength of steel-wood hybrid ribs used in traditional methods. In summary, the overall performance of the crossbeam is greatly improved in terms of ease of use and support strength.

[0004] The shortcoming of the existing technology is that, due to the varying depths of the trenches but the limited height of the support plates, the usual approach for supporting deeper trenches is to first use an excavator and manual labor to press down a single set of support plates until the top of the support plate moves down to near the top of the trench. At this point, another set of support plates is installed on top of the previous set of support plates using a pin connection, and the pressure is continued to complete the support of the deeper trench. Therefore, it is necessary to assemble two sets of support plates separately, which is a rather cumbersome process. Summary of the Invention

[0005] The purpose of this invention is to provide a support structure for highway subgrade construction to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A support structure for highway subgrade construction includes a support plate for fitting against the sidewall of a trench. The support plate includes a first part and a second part slidably disposed on the first part. A gap compensation mechanism is provided between the first part and the second part.

[0008] The gap compensation mechanism includes a slide groove formed on the first part, the slide groove including a vertical section and an inclined section, and a slide rod fixedly connected to the second part, the slide rod being slidably connected to the slide groove.

[0009] In the aforementioned support structure for highway subgrade construction, two sets of sliding rods and two sets of sliding grooves are provided, and the two sets of sliding rods and the two sets of sliding grooves are staggered.

[0010] The above-mentioned support structure for highway subgrade construction includes an installation frame on the support plate, a connecting rod rotatably mounted on the installation frame, an adjusting component threadedly connected to the connecting rod, and a force-applying hole on the adjusting component.

[0011] The aforementioned support structure for highway subgrade construction has multiple adjustment holes on the mounting frame.

[0012] The aforementioned support structure for highway subgrade construction includes a limiting and reinforcing mechanism on the second part for fixing the position of the second part and supporting the second part.

[0013] The aforementioned support structure for highway subgrade construction includes a limiting and reinforcing mechanism comprising a rotating seat fixed to the second part and a transmission component rotatably mounted on the rotating seat. A torsion spring is provided between the transmission component and the rotating seat. A connecting rod is rotatably mounted on the transmission component. A sliding seat is slidably mounted on the second part. The end of the connecting rod away from the transmission component is rotatably connected to the sliding seat. A cylindrical rod is provided on the mounting frame. A wedge-shaped surface is provided on the transmission component. The cylindrical rod is located on the movement stroke of the wedge-shaped surface.

[0014] It also includes a passive locking assembly for fixing the position of the transmission component.

[0015] The aforementioned support structure for highway subgrade construction includes a passive locking component comprising a spring pin slidably disposed on the transmission member, wherein a locking groove adapted to the spring pin is provided on the first part, and the locking groove is located on the movement stroke of the spring pin.

[0016] In the above-mentioned support structure for highway subgrade construction, a limiting nail is slidably provided on the first part, and the limiting nail has a first position away from the trench and a second position inserted into the trench.

[0017] The limiting pin is provided with an abutment block, the abutment block is provided with a first abutment surface and a second abutment surface, the second part is provided with a first abutment rod and a second abutment rod, the first abutment rod is arranged in a position corresponding to the first abutment surface, and the second abutment rod is arranged in a position corresponding to the second abutment surface.

[0018] The aforementioned support structure for highway subgrade construction has a hoisting hole provided on the first part.

[0019] The second part of the aforementioned support structure for highway subgrade construction is equipped with lifting rings.

[0020] In the above technical solution, the present invention provides a support structure for highway subgrade construction, comprising a support plate including a first part and a second part slidably disposed on the first part. When installing the support plate, the first part is first pressed down into the trench, and then the second part is controlled to move upward independently. During this process, the sliding rod slides along the groove. Since the groove includes a vertical section and an inclined section, when the sliding rod moves from the vertical section into the inclined section, it will drive the second part to move towards the inner wall of the trench, so that the second part fits into the trench, thereby filling the gap between the second part and the trench, thereby increasing the support effect of the support plate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0023] Figure 2 This is a side view structural diagram provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the second part of the structure in a contracted state, provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the second part of the structure in an extended state, provided in an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of a local structure at point A;

[0027] Figure 6 This is a schematic diagram of the second part of the front view structure provided in an embodiment of the present invention;

[0028] Figure 7 This is a side view of the structure of the second part in an extended state, as provided in an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the internal structure provided for another embodiment of the present invention;

[0030] Figure 9 for Figure 8 Enlarged schematic diagram of the local structure at point B;

[0031] Figure 10 This is a schematic diagram illustrating the connection process between the card slot and the card connector, as provided in another embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Support plate; 2. First part; 3. Second part; 4. Slide groove; 5. Vertical section; 6. Inclined section; 7. Slide rod; 8. Groove; 9. Mounting bracket; 10. Connecting rod; 11. Adjusting component; 12. Force application hole; 13. Adjustment hole; 14. Rotating seat; 15. Transmission component; 16. Connecting rod; 17. Sliding seat; 18. Cylindrical rod; 19. Wedge-shaped surface; 20. Vertical groove; 21. Spring pin; 22. Locking groove; 23. Lifting hole; 24. Lifting ring; 25. Limiting pin; 26. Abutment block; 27. First abutment rod; 28. Second abutment rod; 29. ​​Slot; 30. Snap-fit ​​part. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] In the description of this invention, it should be understood that, Figure 7 The second part 3 is positioned above the first part 2, and vice versa. The terms "center", "longitudinal", "lateral", "length", "width", "degree", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 the present invention 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 the present invention.

[0036] Reference Figure 1-10 The present invention provides a support structure for highway subgrade construction, including a support plate 1 for fitting with the sidewall of a trench. The support plate 1 includes a first part 2 and a second part 3 slidably disposed on the first part 2. A gap compensation mechanism is provided between the first part 2 and the second part 3.

[0037] The gap compensation mechanism includes a groove 4 formed on the first part 2, the groove 4 including a vertical section 5 and an inclined section 6, and a sliding rod 7 fixedly connected to the second part 3, the sliding rod 7 being slidably connected to the groove 4.

[0038] Specifically, the trench is elongated, and the support plates 1 are usually used in sets, with each set consisting of two support plates 1. A support member is installed between the two support plates 1 to provide horizontal support. To facilitate the transportation and hoisting of the support plates 1, they are made to a specific size, and the size is not excessive. If necessary, two sets of support plates 1 can be assembled. When supporting shallow trenches, that is, when the height of a single set of support plates 1 is sufficient to support the trench, only the single set of support plates 1 needs to be installed inside the trench. When supporting deep trenches, the single set of support plates 1 is first installed inside the trench, but at this time the support plates... The top of support plate 1 is still located above the top of the trench. At this time, the bottom of support plate 1 is not in contact with the inner bottom wall of the trench. Then, another set of support plates 1 is hoisted above the first set of support plates 1, and the two sets of support plates 1 are connected by a pin to increase the vertical height of support plates 1. Then, the two sets of support plates 1 are installed into the trench at the same time to achieve deep trench support. This is existing technology and will not be described in detail. One of the core innovations of this invention is that the support plate 1 is divided into a first part 2 and a second part 3 that is slidably disposed on the first part 2. The first part 2 is used to fit against the inner bottom wall of the trench, and the second part 3... A groove 8 is provided on part 2, and part 3 is slidably connected to the groove 8. A slide 4 is formed on the side wall of the groove 8. The slide rod 7 is preferably a cylindrical rod 18, which is arranged on the two side walls of part 3. The lower half of the slide 4 is a vertical section 5, and the upper half is an inclined section 6. The top of the inclined section 6 is inclined away from the groove. The purpose of this arrangement is that when installing the support plate 1, the first part 2 is first placed inside the groove, at which time the second part 3 is located inside the groove 8 (this is the contracted state of the second part 3), and the first part 2 is in contact with the bottom wall of the groove. The support is then secured by the support member. Plate 1 is supported from the inside, and the second part 3 is controlled to move upward independently. During this process, the sliding rod 7 slides along the groove 4. Since the groove 4 includes a vertical section 5 and an inclined section 6, when the sliding rod 7 moves from the vertical section 5 into the inclined section 6, it will drive the second part 3 to move towards the inner wall of the groove (at this time, the bottom end of the second part 3 is completely above the first part 2), so that the second part 3 fits into the groove, thereby filling the gap between the second part 3 and the groove (this is the extended state of the second part 3). In this way, the support plate 1 can be installed easily while improving the support effect of the support plate 1.

[0039] Preferably, two sets of sliding rods 7 and two sets of sliding grooves 4 are provided, and the two sets of sliding rods 7 and the two sets of sliding grooves 4 are staggered. Specifically, the staggered arrangement means that the two sliding grooves 4 on a single first part 2 are at different heights, and correspondingly, the two sliding rods 7 on a single second part 3 are also at different heights, so that the two sliding rods 7 can enter the inclined part 6 from the vertical section 5 at the same time. The purpose of this arrangement is that the two sliding rods 7 are staggered so that the two sliding rods 7 are not on the same axis, which means that the second part 3 will not rotate around the central axis of the sliding rods 7, so as to achieve the function of circumferential limiting, thereby improving the stability of the second part 3 when sliding vertically.

[0040] Preferably, the support plate 1 is provided with a mounting bracket 9, and a connecting rod 10 is rotatably provided on the mounting bracket 9. An adjusting component 11 is threadedly connected to the connecting rod 10, and a force application hole 12 is provided on the adjusting component 11. Specifically, each support plate 1 is provided with two mounting brackets 9, and each mounting bracket 9 is rotatably provided with two connecting rods 10 to improve the stability of the support. The adjusting member 11 is provided with internal threads, and the ends of the connecting rods 10 are provided with external threads. The two ends of the adjusting member 11 are respectively threaded to the connecting rods 10 on the two support plates 1, and the internal threads of the two ends of the adjusting member 11 are opposite in direction. Similarly, the external threads of the connecting rods 10 at both ends are also opposite in direction. The force-applying hole 12 is provided in the middle of the adjusting member 11 and penetrates the adjusting member 11 radially. The purpose of this arrangement is that after the first part 2 is placed, a rod-shaped structure is inserted into the force-applying hole 12 to facilitate the rotation of the adjusting member 11. During the rotation of the adjusting member 11, it will drive the two connecting rods 10 at both ends to move in opposite directions at the same time, so as to open the two first parts 2 to both sides at the same time, which facilitates the installation of the first part 2.

[0041] Furthermore, the mounting frame 9 is provided with a plurality of adjustment holes 13, which are arranged vertically in the mounting frame 9. Specifically, the adjustment holes 13 are used to adjust the installation position of the connecting rod 10, thereby adjusting the support height of the connecting rod 10.

[0042] It should be noted that after the second part 3 is pulled out of the groove 8, on the one hand, the lack of a limiting structure will cause the second part 3 to slide down under its own weight; on the other hand, the lack of a supporting component makes it prone to collapse. To solve the above problems, the second part 3 is further provided with a limiting and reinforcing mechanism for fixing the position of the second part 3 and supporting the second part 3. Specifically...

[0043] Preferably, the limiting and reinforcing mechanism includes a rotating seat 14 fixed to the second part 3 and a transmission member 15 rotatably disposed on the rotating seat 14. A torsion spring (not shown) is disposed between the transmission member 15 and the rotating seat 14. A connecting rod 16 is rotatably disposed on the transmission member 15. A sliding seat 17 is slidably disposed on the second part 3. The end of the connecting rod 16 away from the transmission member 15 is rotatably connected to the sliding seat 17. A cylindrical rod 18 is disposed on the mounting frame 9. A wedge-shaped surface 19 is disposed on the transmission member 15. The cylindrical rod 18 is located on the movement stroke of the wedge-shaped surface 19.

[0044] It also includes a passive locking assembly for fixing the position of the transmission member 15. Specifically, the rotating seat 14 is fixed to the surface of the second part 3, the transmission member 15 is provided with a rotating shaft, the rotating shaft is rotatably connected to the rotating seat 14, the elastic force of the torsion spring causes the transmission member 15 to have a tendency to rotate towards the second part 3, the transmission member 15 is approximately L-shaped, its wedge-shaped surface 19 is provided at the connection position of the short side and the long side, the surface of the second part 3 is provided with a vertical groove 20, the sliding seat 17 is slidably connected to the vertical groove 20, and a limit strip or other structure is provided between the two to prevent them from separating from each other, one end of the connecting rod 16 is rotatably connected to the side of the long side of the transmission member 15, and the other end is connected to the sliding seat 14. 7. A rotatable connection is made, with the cylindrical rod 18 fixed to the side of the mounting bracket 9, positioned along the travel of the wedge-shaped surface 19. The passive locking element can be an existing limiting structure such as a pin, and the slope of the wedge-shaped surface 19 matches the slope of the inclined section 6. This arrangement ensures that, under the force of the torsion spring, the long side of the transmission component 15 is vertical. During the extraction of the second part 3, the transmission component 15 moves upward synchronously, causing the wedge-shaped surface 19 to abut against the cylindrical rod 18, thus passively rotating the transmission component 15 away from the second part 3. The torsion spring stores energy, which, under the action of the connecting rod 16, pulls the sliding seat 17 downward. After the transmission component 15 rotates 90 degrees, its short side abuts against the second part 3, restricting the transmission component 15 from further rotation. This forms a triangle with the connecting rod 16, the transmission component 15, and the second part 3. During the subsequent movement of the slide rod 7 from the vertical section 5 to the inclined section 6, the cylindrical rod 18 remains in contact with the surface of the wedge-shaped surface 19. After the second part 3 fills the gap, the transmission component 15 is fixedly connected to the first part 2 by a passive locking assembly, preventing the transmission component 15 from moving vertically or rotating. On the one hand, it can prevent the transmission component 15 and the second part 3 from falling. On the other hand, it can fix the transmission component 15 in a horizontal position and provide a fulcrum for the connecting rod 10, thereby providing support for the second part 3. After the trench support is completed, the passive locking component is released from its restriction on the transmission component 15. Then, the second part 3 is controlled to move downward so that the transmission component 15 moves downward synchronously, thereby making the wedge surface 19 move away from the cylindrical rod 18. At this time, the spring force of the torsion spring is released, thereby causing the transmission component 15 to rotate in the opposite direction, so as to reset the transmission component 15 and the connecting rod 16.

[0045] Preferably, the passive locking assembly includes a spring pin 21 slidably disposed on the transmission member 15. A locking groove 22 adapted to the spring pin 21 is provided on the first part 2, and the locking groove 22 is located along the travel stroke of the spring pin 21. Specifically, a radial groove is provided on the rotating shaft, the spring pin 21 is slidably connected to the radial groove, and the end of the spring pin 21 extends through the radial groove to the outside. The locking groove 22 is located on the side wall of the groove 8. This arrangement ensures that when the wedge-shaped surface 19 is not in contact with the cylindrical rod 18, the spring pin 21 is in a vertical position. During the subsequent rotation of the transmission member 15, the spring pin 21 will be synchronously rotated from a vertical state to a horizontal state. At this time, there is a gap between the spring pin 21 and the side wall of the groove 8, and the slide rod 7 is located in the vertical section 5. Inside, as the slide bar 7 moves from the vertical section 5 into the inclined section 6, it will cause the end of the spring pin 21 to abut against the side wall of the groove 8 and store the spring inside the spring pin 21. When the second part 3 moves to the target position, that is, when the second part 3 is in contact with the inner wall of the groove, at the same time, the spring pin 21 moves to the position that coincides with the locking groove 22. At this time, the spring force is released to drive the spring pin 21 to insert into the locking groove 22, thus completing the passive locking of the vertical position and rotation angle of the transmission component 15.

[0046] Furthermore, the first part 2 is provided with lifting holes 23. Specifically, the lifting holes 23 are located at the four corners of the first part 2 for attaching to hooks to facilitate the lifting and transportation of the first part 2.

[0047] Furthermore, a lifting ring 24 is provided on the second part 3. Specifically, the lifting ring 24 is fixed to the middle of the top of the second part 3, and it is also used to hook the hook so as to pull the second part 3 out of the groove 8.

[0048] In another embodiment of the present invention, a limiting pin 25 is slidably disposed on the first part 2. The limiting pin 25 has a first position away from the groove and a second position inserted into the groove. Specifically, the limiting pin 25 is perpendicular to the vertical surface of the first part 2 and is placed inside the groove 8. During the installation of the support plate 1, the limiting pin 25 is placed in the first position, at which time the end of the limiting pin 25 will not contact the side wall of the groove. During the installation of the second part 3, the limiting pin 25 is driven to switch from the first position to the second position. In the second position, it penetrates the side wall of the first part 2 and is inserted into the side wall of the groove to limit the first part 2, which can minimize the possibility of the first part 2 being misaligned.

[0049] Furthermore, the limiting pin 25 is provided with an abutment block 26, the abutment block 26 is provided with a first abutment surface and a second abutment surface, the second part 3 is provided with a first abutment rod 27 and a second abutment rod 28, the first abutment rod 27 is arranged in a position corresponding to the first abutment surface, and the second abutment rod 28 is arranged in a position corresponding to the second abutment surface. Specifically, the abutment block 26 is disposed at the end of the limiting pin 25. Both the first and second abutment surfaces are inclined surfaces. The first abutment surface is disposed on the surface of the abutment block 26 near the groove 8, and the second abutment surface is disposed on the surface of the abutment block 26 away from the groove 8. Both the first abutment rod 27 and the second abutment rod 28 include an inclined portion and a horizontal portion. The inclined portion is fixed to the second part 3. The first abutment rod 27 abuts against the first abutment surface, and the second abutment portion abuts against the second abutment surface. The first abutment rod 27 is closer to the end of the first abutment surface. This arrangement ensures that when the second part 3 is placed inside the groove 8, the first abutment rod 27 and the second abutment rod 28 are respectively positioned on both sides of the abutment block 26 to axially limit the abutment block 26 and the limiting pin 25. This allows the limiting pin 25 to be positioned in the first position. When the second part 3 slides upward relative to the first part 2, the first abutting rod 27 will gradually move away from the first abutting surface. At the same time, the second abutting rod 28 will abut against the second abutting surface, thereby driving the abutting block 26 and the limiting pin 25 to move towards the inner wall of the trench, so that the limiting pin 25 is passively switched from the first position to the second position. After the trench support is completed, the second part 3 moves in the opposite direction, thereby driving the first abutting rod 27 and the second abutting rod 28 to move in the opposite direction. This will cause the first abutting rod 27 to abut against the first abutting surface, while the second abutting rod 28 will gradually move away from the second abutting surface, thereby driving the limiting pin 25 to passively switch from the second position to the first position.

[0050] In another embodiment of the present invention, two symmetrically arranged transmission members 15 are respectively provided with a slot 29 and a locking part 30. The slot 29 is located on the movement stroke of the locking part 30. Specifically, the slot 29 is a groove with a through groove starting from the side wall, and the cross-section of the locking part 30 is T-shaped, with the radial dimension of the long side of the T-shape matching the width of the through groove. The transmission member 15 containing the slot 29 is the first transmission member 15, and the transmission member 15 containing the locking part 30 is the second transmission member 15. The purpose of this arrangement is that when the second part 3 is pulled upward, the second part 3 containing the first transmission member 15 is pulled upward first. After this part is placed (but at this time the slide rod 7 is at the position where the vertical section 5 and the inclined section 6 are connected), the first transmission member 15 is in a horizontal state. Then the second part 3 containing the second transmission member 15 is pulled upward. In this way, when the second transmission member 15 rotates from the vertical state to the horizontal state, the locking part 30 will rotate to... The two second parts 3 are moved upward simultaneously from the side of the slot 29. During this process, the first transmission member 15 and the second transmission member 15 move horizontally relative to each other, so that the locking part 30 is inserted into the slot 29. This connects the first transmission member 15 and the second transmission member 15 into a whole, so as to provide common support between the two second parts 3. The advantage of this setting is that when the second part 3 is tilted under force, the locking part 30 will abut against the inner wall of the slot 29, and the reaction force generated can further support the second part 3, that is, it can further improve the stability of the installation of the second part 3. After the groove is supported, the first transmission member 15 and the second transmission member 15 move in opposite directions so that the locking part 30 is pulled out from the slot 29.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A support structure for highway subgrade construction, comprising a support plate for fitting against the sidewall of a trench, characterized in that, The support plate includes a first part and a second part slidably disposed on the first part, and a gap compensation mechanism is provided between the first part and the second part. The gap compensation mechanism includes a slide groove formed on the first part, the slide groove including a vertical section and an inclined section, and a slide rod fixedly connected to the second part, the slide rod being slidably connected to the slide groove.

2. The support structure for highway subgrade construction according to claim 1, characterized in that, Both the slide rod and the slide groove are provided in two sets, and the two sets of slide rods and the two sets of slide grooves are staggered.

3. The support structure for highway subgrade construction according to claim 1, characterized in that, The support plate is provided with a mounting bracket, and a connecting rod is rotatably mounted on the mounting bracket. An adjusting component is threadedly connected to the connecting rod, and a force-applying hole is provided on the adjusting component.

4. The support structure for highway subgrade construction according to claim 3, characterized in that, The mounting bracket has multiple adjustment holes.

5. A support structure for highway subgrade construction according to claim 3, characterized in that, The second part is provided with a limiting and reinforcing mechanism for fixing the position of the second part and supporting the second part.

6. The support structure for highway subgrade construction according to claim 5, characterized in that, The limiting and reinforcing mechanism includes a rotating seat fixed to the second part and a transmission component rotatably disposed on the rotating seat. A torsion spring is disposed between the transmission component and the rotating seat. A connecting rod is rotatably disposed on the transmission component. A sliding seat is slidably disposed on the second part. The end of the connecting rod away from the transmission component is rotatably connected to the sliding seat. A cylindrical rod is disposed on the mounting bracket. A wedge-shaped surface is disposed on the transmission component. The cylindrical rod is located on the movement stroke of the wedge-shaped surface. It also includes a passive locking assembly for fixing the position of the transmission component.

7. A support structure for highway subgrade construction according to claim 6, characterized in that, The passive locking assembly includes a spring pin slidably disposed on the transmission member, and a locking groove adapted to the spring pin is provided on the first part, the locking groove being located on the movement stroke of the spring pin.

8. The support structure for highway subgrade construction according to claim 1, characterized in that, A limiting pin is slidably disposed on the first part, the limiting pin having a first position away from the groove and a second position inserted into the groove; The limiting pin is provided with an abutment block, the abutment block is provided with a first abutment surface and a second abutment surface, the second part is provided with a first abutment rod and a second abutment rod, the first abutment rod is arranged in a position corresponding to the first abutment surface, and the second abutment rod is arranged in a position corresponding to the second abutment surface.

9. A support structure for highway subgrade construction according to claim 1, characterized in that, The first part is provided with a lifting hole.

10. A support structure for highway subgrade construction according to claim 1, characterized in that, The second part is equipped with a lifting ring.

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