A pressure-controlled foundation pit support device for mining

Abstract

This invention discloses a pressure-controlled adjustable foundation pit support device for mining, comprising a foundation pit, a foundation pit protection component, and a hardness-controlled pressure-driven component. The hardness-controlled pressure-driven component is disposed on the sidewall of the foundation pit, and the foundation pit protection component is disposed on the sidewall of the foundation pit, with the protection component snapped into the hardness-controlled pressure-driven component. The hardness-controlled pressure-driven component includes a first hardness-controlled pressure-driven component and a second hardness-controlled pressure-driven component, which are arranged in a square shape with their ends in contact within the foundation pit. This invention belongs to the technical field of mining foundation pit related equipment, and particularly relates to a pressure-controlled adjustable foundation pit support device for mining, which achieves compaction and support of the foundation pit sidewall, plays a good stabilizing role against lateral earth pressure, and prevents the top of the support structure from bending into the foundation pit, thus affecting the construction of the top of the foundation pit.

Description

Technical Field

[0001] This invention belongs to the technical field of equipment related to mine foundation pits, and particularly relates to a pressure-controlled foundation pit support device for mines. Background Technology

[0002] A foundation pit is an excavated pit at the designed foundation location, based on the base elevation and foundation plane dimensions. To ensure the safety of foundation pit construction, support, reinforcement, and protection measures are required for the sidewalls of the foundation pit. Common foundation pit support structures include support plates inserted into the ground, which are positioned facing the inner wall of the foundation pit. When the inner wall of the foundation pit tilts inward, the support plates can provide some support. However, existing support devices cannot effectively stabilize the lateral earth pressure generated during mining operations, which may cause the top of the support structure to bend inward, potentially affecting the construction of the top of the foundation pit. Furthermore, the soil on the sidewalls of the foundation pit cannot be compacted before installing the support devices, leaving the exposed soil at risk of collapse at any time. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a pressing and regulating type foundation pit support device for mining. The foundation pit protection component and the hardness regulating pressing and driving component compact and support the side wall of the foundation pit, which plays a good stabilizing role against lateral earth pressure and prevents the top of the support structure from bending into the foundation pit, thus affecting the construction of the top of the foundation pit.

[0004] The technical solution adopted in this invention is as follows: A pressing and controllable foundation pit support device for mining includes a foundation pit, a foundation pit protection component, and a hardness-controlled pressing and driving component. The foundation pit is located on the ground, the hardness-controlled pressing and driving component is located on the side wall of the foundation pit, and the foundation pit protection component is located on the side wall of the foundation pit. The foundation pit protection component is snapped into the hardness-controlled pressing and driving component. The foundation pit protection component and the hardness-controlled pressing and driving component compact and support the side wall of the foundation pit, play a good stabilizing role against lateral earth pressure, and prevent the top of the support structure from bending into the foundation pit, thus affecting the construction of the top of the foundation pit.

[0005] The hardness-controlled pressing drive assembly includes a hardness-controlled pressing drive assembly one and a hardness-controlled pressing drive assembly two. The hardness-controlled pressing drive assembly one and the hardness-controlled pressing drive assembly two have the same structure and are arranged in a centrally symmetrical structure. Here, only the structure of the hardness-controlled pressing drive assembly one is described. The hardness-controlled pressing drive assembly one and the hardness-controlled pressing drive assembly two are arranged in a square shape with their ends in contact within the pit.

[0006] The hardness-adjustable pressing drive assembly includes an upper L-shaped fixing plate, a drive assembly, a lower L-shaped fixing plate, a pressing control assembly, and a hardness-adjustable pressing assembly. The upper L-shaped fixing plate is fixed to the upper end of the side wall of the foundation pit, and the lower L-shaped fixing plate is fixed to the lower end of the side wall of the foundation pit. The drive assembly is mounted on the upper L-shaped fixing plate, which supports and fixes the drive assembly. The upper end of the pressing control assembly is movably engaged within the upper L-shaped fixing plate, and the lower end of the pressing control assembly is movably engaged within the lower L-shaped fixing plate. The hardness-adjustable pressing assembly is connected to the side wall of the pressing control assembly. Initially, the hardness-adjustable pressing assembly compacts the side wall of the foundation pit. After compaction, the foundation pit is supported by the foundation pit protection assembly. When the lateral earth pressure on the upper part of the foundation pit is large, the hardness-adjustable pressing assembly works in conjunction with the foundation pit protection assembly to reinforce it.

[0007] The upper L-shaped fixing plate includes an upper support plate 1 and an upper support plate 2. The upper support plate 1 has an upper sliding groove 1, and the upper support plate 2 has an upper sliding groove 2 and an upper locking groove. A sliding locking member is movably engaged in the upper sliding groove 1. The lower L-shaped fixing plate includes a lower support plate 1 and a lower support plate 2. The lower support plate 1 has a lower sliding groove 1, and the lower support plate 2 has a lower sliding groove 2 and a lower locking groove. The upper sliding groove 1 and the upper sliding groove 2 are connected through each other, and the lower sliding groove 1 and the lower sliding groove 2 are also connected through each other.

[0008] Furthermore, the upper support plate two is provided with a placement groove. The drive assembly includes a motor assembly, a lead screw, a lead screw pair, and a limiting rod. The motor assembly is located in the placement groove and is a dual-rotation motor assembly. The upper support plate two supports and fixes the motor assembly. The lead screw is movably located in the placement groove and is connected to the output shaft end of the motor assembly. The limiting rod is located in the placement groove and is positioned close to the lead screw. The lead screw pair is movably located on the lead screw, and one end of the lead screw pair is movably engaged in the upper sliding groove two. The limiting rod passes through the lead screw pair. The motor assembly drives the lead screw to rotate, and the lead screw drives the lead screw pair to move linearly along the limiting rod.

[0009] Preferably, a drive plate is movably connected to the lead screw pair, and the other end of the drive plate is movably connected to the sliding snap-fit ​​component; as the lead screw pair slides along the upper slide groove in a direction away from the motor assembly, it pushes the drive plate to move, and the drive plate pushes the sliding snap-fit ​​component to move along the upper slide groove.

[0010] In a preferred embodiment of the present invention, the pressing control assembly includes a pressing control assembly one and a pressing control assembly two. The pressing control assembly one includes a pressing control plate one. The upper end of the pressing control plate one is connected to an upper sliding locking component one and an upper locking component one. The upper sliding locking component one and the upper locking component one are movably locked in the upper sliding groove two and the upper sliding groove one. The upper sliding locking component one is movably connected to the lead screw pair. The lower end of the pressing control plate one is connected to a lower locking component one. The lower locking component one is movably locked in the lower sliding groove two and the lower sliding groove one.

[0011] The pressing control component two includes a pressing control plate two. The upper end of the pressing control plate two is connected to an upper sliding locking component two and an upper locking component two. The upper sliding locking component two and the upper locking component two are movably locked in the upper sliding groove two and the upper sliding groove one. The upper sliding locking component two is movably connected to a sliding locking component. The lower end of the pressing control plate two is connected to a lower locking component two. The lower locking component two is movably locked in the upper sliding groove two and the upper sliding groove one.

[0012] When the motor assembly rotates forward, as the lead screw moves away from the motor assembly along the upper slide groove 2, it pushes the pressing control plate 1 to slide along the upper and lower slide grooves 2 via the upper sliding engagement piece 1. The upper engagement piece 1 slides along the upper slide groove 2, and the lower engagement piece 1 slides along the lower slide groove 2. Simultaneously, the drive plate, pushed by the lead screw, drives the sliding engagement piece, which slides along the upper slide groove 1. This, in turn, drives the pressing control plate 2 to slide via the upper sliding engagement piece 2. The upper engagement piece 2 slides along the upper slide groove 2. The second sliding engagement piece slides along the second sliding groove. As the drive plate pushes, the second pressing control plate slides from the second upper support plate to the first upper support plate. The second upper engagement piece slides along the first upper sliding groove. The second lower engagement piece slides along the first sliding groove. The second upper sliding engagement piece slides along the first upper sliding groove. The first pressing control plate slides from the second upper support plate to the first upper support plate. The first upper engagement piece slides along the first upper sliding groove. The first lower engagement piece slides along the first sliding groove. The first upper sliding engagement piece slides along the second upper sliding groove.

[0013] When the motor assembly reverses, as the lead screw moves along the upper sliding groove two towards the direction away from the motor assembly, it drives the upper sliding engagement piece one to slide along the upper sliding groove two. The upper sliding engagement piece one slides along the upper sliding groove two, and the lower engagement piece one slides along the lower sliding groove one. Simultaneously, the drive plate, pushed by the lead screw, drives the sliding engagement piece, which slides along the upper sliding groove one. This, in turn, drives the pressure control plate two to slide along the upper sliding groove two. As the upper sliding groove 1 slides, the lower locking component 2 slides along the lower sliding groove 1. With the push of the drive plate, the pressing control plate 1 slides from the upper support plate 1 to the upper support plate 2. The upper locking component 1 slides along the upper sliding groove 2, the lower locking component 1 slides along the lower sliding groove 2, the upper sliding locking component 1 slides along the upper sliding groove 2, the pressing control plate 2 slides from the upper support plate 1 to the upper support plate 2, the upper locking component 2 slides along the upper sliding groove 2, the lower locking component 2 slides along the lower sliding groove 2, and the upper sliding locking component 2 slides along the upper sliding groove 1.

[0014] Furthermore, both the first and second pressing control plates are equipped with control plates, and the side walls of the first and second pressing control plates are provided with through holes.

[0015] Preferably, the hardness-adjustable pressing components are respectively disposed on the side walls of pressing control plate one and pressing control plate two. The hardness-adjustable pressing components include a telescopic rod, a spring, and a pressing plate. One end of the spring is connected to the control plate through a through hole, and the other end of the spring is disposed outside pressing control plate one and pressing control plate two. The control plate controls the energization and de-energization of the spring. When energized, the spring is compressed; when de-energized, the spring returns to its length. One end of the telescopic rod is connected to the control plate, and the other end of the telescopic rod is disposed outside pressing control plate one and pressing control plate two. The spring is sleeved outside the telescopic rod. The pressing plate is connected to the other end of the spring and the other end of the telescopic rod. The pressing plate is disposed close to the side wall of the foundation pit. During the movement of pressing control plate one and pressing control plate two, the control plate controls the contraction and recovery of the spring. After the spring contracts, it drives the pressing plate to move closer to the side wall of the foundation pit. During the recovery process, the spring pushes the pressing plate to compact the soil on the side wall of the foundation pit. After the compaction is completed, the spring is in a contracted state.

[0016] The upper and lower slots are connected to a support plate. The lower end of the support plate passes through the upper slot and is located in the lower slot. The upper end of the support plate is located in the upper slot. The pressing plate is located between the support plate and the pressing control plate one and pressing control plate two. If the spring in the compressed state is de-energized, the pressing plate is supported on the side wall of the support plate, which can effectively reduce the influence of lateral soil pressure on the side wall of the foundation pit. The upper support plate two and the lower support plate two are provided with fixing holes. The screw fixes the hardness-adjustable pressing drive assembly in the foundation pit through the fixing holes.

[0017] In a preferred embodiment of the present invention, the foundation pit protection assembly includes a foundation pit protection assembly one and a foundation pit protection assembly two. The foundation pit protection assembly one and the foundation pit protection assembly two have the same structure. Here, only the structure of the hardness-adjustable pressing drive assembly one is described. The foundation pit protection assembly one is movably connected between the hardness-adjustable pressing drive assembly one and the foundation pit. The foundation pit protection assembly two is movably connected between the hardness-adjustable pressing drive assembly two and the foundation pit. The foundation pit protection assembly one includes an upper support member, a lower support member, and a support plate. Both the upper support member and the lower support member are provided with insertion holes. The lower end of the support plate is provided through the insertion hole. The upper end of the support plate is located at the insertion hole of the upper support member, and the lower end of the support plate is located at the insertion hole of the lower support member. The support plate provides support for the foundation pit.

[0018] The beneficial effects of the present invention after adopting the above structure are as follows:

[0019] (1) The foundation pit protection components and the hardness-adjustable pressing drive components compact and support the side walls of the foundation pit, which plays a good stabilizing role against lateral earth pressure and prevents the top of the support structure from bending into the foundation pit, thus affecting the construction of the top of the foundation pit.

[0020] (2) During the movement of the pressing control plate one and the pressing control plate two, the control plate controls the contraction and recovery of the spring. After the spring contracts, it drives the pressing plate to move closer to the side wall of the pit. During the recovery of the spring, it pushes the pressing plate to compact the soil on the side wall of the pit.

[0021] (3) When the ground above the foundation pit is subjected to large lateral earth pressure, the first and second pressing control plates are adjusted to the corresponding positions. After the spring in the compressed state is de-energized, the pressing plate is supported on the side wall of the support plate, which can effectively reduce the influence of lateral earth pressure on the side wall of the foundation pit.

[0022] (4) The support plates are arranged in a square shape around the side wall of the pit to support the pit. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0024] Figure 1 This is a diagram illustrating the usage status of a pressure-controlled foundation pit support device for mining proposed in this invention.

[0025] Figure 2 This is a top view of a pressure-controlled foundation pit support device for mining proposed in this invention;

[0026] Figure 3 This is a partial top view of a pressure-controlled foundation pit support device for mining proposed in this invention;

[0027] Figure 4 This is a schematic diagram of the hardness-controlled pressing drive component of a pressing control type foundation pit support device for mining proposed in this invention.

[0028] Figure 5 This is a schematic diagram of the hardness-controlled pressing drive component of a pressing control type foundation pit support device for mining proposed in this invention.

[0029] Figure 6 This is a front view of a hardness-regulating pressing component of a pressing and regulating type foundation pit support device for mining proposed in this invention.

[0030] Figure 7 This is a schematic diagram of the drive assembly and upper L-shaped fixing plate of a pressure-adjustable foundation pit support device for mining proposed in this invention.

[0031] Figure 8 This is a schematic diagram of the pressing and regulating component of a pressing and regulating type foundation pit support device for mining proposed in this invention;

[0032] Figure 9 for Figure 8 A magnified view of a portion at point A;

[0033] Figure 10 for Figure 8 A magnified view of a portion at point B;

[0034] In the attached diagram: 1. Excavation pit; 2. Excavation pit protection assembly; 3. Hardness-adjustable pressing drive assembly; 4. Hardness-adjustable pressing drive assembly one; 5. Hardness-adjustable pressing drive assembly two; 6. Upper L-shaped fixing plate; 7. Drive assembly; 8. Lower L-shaped fixing plate; 9. Pressing control assembly; 10. Hardness-adjustable pressing assembly; 11. Upper support plate one; 12. Upper support plate two; 13. Upper sliding groove one; 14. Upper sliding groove two; 15. Upper locking groove; 16. Sliding locking component; 17. Lower support plate one; 18. Lower support plate two; 19. Lower sliding groove one; 20. Lower sliding groove two; 22. Lower locking groove; 23. Placement groove; 24. Motor assembly; 25. 26. Lead screw, 27. Lead screw pair, 28. Limiting rod, 29. Drive plate, 30. Pressing control assembly one, 31. Pressing control assembly two, 32. Pressing control plate one, 33. Upper sliding locking part one, 34. Lower locking part one, 35. Pressing control plate two, 36. Upper sliding locking part two, 37. Upper locking part two, 38. Lower locking part two, 39. Control plate, 40. Through hole, 41. Telescopic rod, 42. Spring, 43. Pressing plate, 44. Support plate, 45. Pit protection assembly one, 46. Pit protection assembly two, 47. Upper support, 48. Lower support, 50. Insertion hole, 51. Fixing hole. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] like Figures 1-10 As shown, a pressure-controlled foundation pit support device for mining includes a foundation pit 1, a foundation pit protection component 2, and a hardness-controlled pressure-driven component 3. The foundation pit 1 is located on the ground. The hardness-controlled pressure-driven component 3 is installed on the side wall of the foundation pit 1, and the foundation pit protection component 2 is installed on the side wall of the foundation pit 1. The foundation pit protection component 2 is snapped into the hardness-controlled pressure-driven component 3. The foundation pit protection component 2 and the hardness-controlled pressure-driven component 3 compact and support the side wall of the foundation pit 1, playing a good stabilizing role against lateral earth pressure and preventing the support structure from being damaged. The top of the structure bends into the pit 1, affecting the construction of the top of the pit 1; the hardness-controlled pressing drive assembly 3 includes a hardness-controlled pressing drive assembly 1 4 and a hardness-controlled pressing drive assembly 2 5. The hardness-controlled pressing drive assembly 1 4 and the hardness-controlled pressing drive assembly 2 5 have the same structure and are arranged in a centrally symmetrical structure. Here, only the structure of the hardness-controlled pressing drive assembly 1 4 is described. The hardness-controlled pressing drive assembly 1 4 and the hardness-controlled pressing drive assembly 2 5 are arranged in a square shape with their ends in contact within the pit 1.

[0038] The hardness-adjustable pressing drive assembly 4 includes an upper L-shaped fixing plate 6, a drive assembly 7, a lower L-shaped fixing plate 8, a pressing control assembly 9, and a hardness-adjustable pressing assembly 10. The upper L-shaped fixing plate 6 is fixed to the upper end of the side wall of the pit 1, and the lower L-shaped fixing plate 8 is fixed to the lower end of the side wall of the pit 1. The drive assembly 7 is mounted on the upper L-shaped fixing plate 6, which supports and fixes it. The upper end of the pressing control assembly 9 is movably engaged within the upper L-shaped fixing plate 6, and the lower end of the pressing control assembly 9 is movably engaged within the lower L-shaped fixing plate 8. The hardness-adjustable pressing assembly 10 is connected to the side wall of the pressing control assembly 9. Initially, the hardness-adjustable pressing assembly 10 compacts the side wall of the pit 1. After compaction, it... The foundation pit protection component 2 provides support for the foundation pit 1. When the lateral earth pressure on the upper part of the foundation pit 1 is large, the hardness-adjustable pressing component 10 works with the foundation pit protection component 2 to reinforce it. The upper L-shaped fixing plate 6 includes an upper support plate 11 and an upper support plate 2 12. The upper support plate 11 is provided with an upper sliding groove 13, and the upper support plate 2 12 is provided with an upper sliding groove 2 14 and an upper locking groove 15. The upper sliding groove 13 is movably locked with a sliding locking member 16. The lower L-shaped fixing plate 8 includes a lower support plate 17 and a lower support plate 2 18. The lower support plate 17 is provided with a lower sliding groove 19, and the lower support plate 2 18 is provided with a lower sliding groove 20 and a lower locking groove 22. The upper sliding groove 13 and the upper sliding groove 2 14 are connected through each other, and the lower sliding groove 19 and the lower sliding groove 20 are connected through each other.

[0039] The upper support plate 212 has a placement slot 23. The drive assembly 7 includes a motor assembly 24, a lead screw 25, a lead screw pair 26, and a limiting rod 27. The motor assembly 24 is located in the placement slot 23 and is a dual-rotation motor assembly 24. The upper support plate 212 supports and fixes the motor assembly 24. The lead screw 25 is movably located in the placement slot 23 and is connected to the output shaft end of the motor assembly 24. The limiting rod 27 is located in the placement slot 23 and is positioned close to the lead screw 25. The lead screw pair 26 is movably located on the lead screw 25. One end of the screw 26 is movably engaged in the upper slide groove 14, and the limiting rod 27 passes through the lead screw pair 26. The motor assembly 24 drives the lead screw 25 to rotate, and the lead screw 25 drives the lead screw pair 26 to move linearly along the limiting rod 27. A drive plate 28 is movably connected to the lead screw pair 26, and the other end of the drive plate 28 is movably connected to the sliding engagement piece 16. As the lead screw pair 26 slides away from the motor assembly 24 along the upper slide groove 14, it pushes the drive plate 28 to move, and the drive plate 28 pushes the sliding engagement piece 16 to move along the upper slide groove 13.

[0040] Pressing control assembly 9 includes pressing control assembly 29 and pressing control assembly 30. Pressing control assembly 29 includes pressing control plate 31. The upper end of pressing control plate 31 is connected to upper sliding engagement piece 32 and upper engagement piece 33. Upper sliding engagement piece 32 and upper engagement piece 33 are movably engaged in upper sliding groove 24 and upper sliding groove 13, respectively. Upper sliding engagement piece 32 is movably connected to lead screw pair 26. The lower end of pressing control plate 31 is connected to lower engagement piece 34. Lower engagement piece 34 is movably engaged in lower... The second slide groove 20 and the first slide groove 19 are located within the second slide groove 20; the second pressing control component 30 includes a second pressing control plate 2 35, the upper end of the second pressing control plate 2 35 is connected to an upper sliding locking component 2 36 and an upper locking component 2 37, the upper sliding locking component 2 36 and the upper locking component 2 37 are movably locked in the second slide groove 2 14 and the first slide groove 13, the upper sliding locking component 2 36 is movably connected to the sliding locking component 16, the lower end of the second pressing control plate 2 35 is connected to a lower locking component 2 38, the lower locking component 2 38 is movably locked in the second slide groove 2 14 and the first slide groove 13;

[0041] When the motor assembly 24 rotates forward, the lead screw pair 26 moves away from the motor assembly 24 along the upper slide groove 2 14. This movement, via the upper sliding engagement piece 32, pushes the pressing control plate 31 to slide along the upper slide groove 2 14 and the lower slide groove 20. The upper engagement piece 33 slides along the upper slide groove 2 14, and the lower engagement piece 34 slides along the lower slide groove 20. Simultaneously, the drive plate 28, driven by the lead screw pair 26, drives the sliding engagement piece 16. The sliding engagement piece 16 slides along the upper slide groove 1 13, which in turn drives the pressing control plate 35 to slide via the upper sliding engagement piece 36. The upper engagement piece 37 slides along the upper slide groove 2 1 14. 4. Sliding: The lower locking component 2 38 slides along the lower sliding groove 20. As the drive plate 28 pushes, the pressing control plate 2 35 slides from the upper support plate 2 12 to the upper support plate 1 11. The upper locking component 2 37 slides along the upper sliding groove 1 13. The lower locking component 2 38 slides along the lower sliding groove 1 19. The upper sliding locking component 2 36 slides along the upper sliding groove 1 13. The pressing control plate 1 31 slides from the upper support plate 2 12 to the upper support plate 1 11. The upper locking component 1 33 slides along the upper sliding groove 1 13. The lower locking component 1 34 slides along the lower sliding groove 1 19. The upper sliding locking component 1 32 slides along the upper sliding groove 2 14.

[0042] When the motor assembly 24 reverses, the lead screw pair 26 moves along the upper slide groove 14 towards the direction away from the motor assembly 24. This causes the upper sliding engagement piece 32 to slide, which in turn drives the pressing control plate 31 to slide. The upper sliding engagement piece 32 slides along the upper slide groove 14, the upper engagement piece 33 slides along the upper slide groove 13, and the lower engagement piece 34 slides along the lower slide groove 19. Simultaneously, the drive plate 28, pushed by the lead screw pair 26, drives the sliding engagement piece 16. The sliding engagement piece 16 slides along the upper slide groove 13, which in turn drives the pressing control plate 35 to slide via the upper sliding engagement piece 36. The upper engagement piece 37 slides along the upper slide groove 19. Slot 13 slides, lower locking component 2 38 slides along lower sliding slot 19, as the drive plate 28 pushes, pressing control plate 1 31 slides from upper support plate 11 to upper support plate 2 12, upper locking component 1 33 slides along upper sliding slot 2 14, lower locking component 1 34 slides along lower sliding slot 2 20, upper sliding locking component 1 32 slides along upper sliding slot 2 14, pressing control plate 2 35 slides from upper support plate 11 to upper support plate 2 12, upper locking component 2 37 slides along upper sliding slot 2 14, lower locking component 2 38 slides along lower sliding slot 2 20, and upper sliding locking component 2 36 slides along upper sliding slot 13.

[0043] Both the first pressing control plate 31 and the second pressing control plate 35 are equipped with control plates 39. The side walls of the first pressing control plate 31 and the second pressing control plate 35 are provided with through holes 40. Hardness-adjustable pressing components 10 are respectively disposed on the side walls of the first pressing control plate 31 and the second pressing control plate 35. The hardness-adjustable pressing component 10 includes a telescopic rod 41, a spring 42, and a pressing plate 43. One end of the spring 42 passes through the through hole 40 and is connected to the control plate 39. The other end of the spring 42 is disposed outside the first pressing control plate 31 and the second pressing control plate 35. The control plate 39 controls the energization and de-energization of the spring 42. When energized, the spring 42 is compressed; when de-energized, the spring 42 returns to its length. One end of the telescopic rod 41 is connected to the control plate 39, and the other end of the telescopic rod 41 is located outside the first pressing control plate 31 and the second pressing control plate 35. The spring 42 is sleeved outside the telescopic rod 41. The pressing plate 43 is connected to the other end of the spring 42 and the other end of the telescopic rod 41. The pressing plate 43 is located close to the side wall of the pit 1. During the movement of the first pressing control plate 31 and the second pressing control plate 35, the control plate 39 controls the contraction and recovery of the spring 42. After the spring 42 contracts, it drives the pressing plate 43 to be located close to the side wall of the pit 1. During the recovery process, the spring 42 pushes the pressing plate 43 to compact the soil on the side wall of the pit 1. After the compaction is completed, the spring 42 is in a contracted state.

[0044] A support plate 44 is connected to the upper slot 15 and the lower slot 22. The lower end of the support plate 44 passes through the upper slot 15 and is located in the lower slot 22. The upper end of the support plate 44 is located in the upper slot 15. A pressing plate 43 is located between the support plate 44 and the pressing control plate 1 31 and the pressing control plate 2 35. If the compressed spring 42 is de-energized, the pressing plate 43 supports the side wall of the support plate 44, which can effectively reduce the influence of lateral soil pressure on the side wall of the foundation pit 1. The foundation pit protection component 2 includes foundation pit protection component 1 45 and foundation pit protection component 2 46. The foundation pit protection component 1 45 and foundation pit protection component 2 46 have the same structure. Here, only the hardness-adjustable pressing drive is described. The structure of component 1 4 is described. Pit protection component 1 45 is movably connected between hardness-adjustable pressing drive component 1 4 and pit 1. Pit protection component 2 46 is movably connected between hardness-adjustable pressing drive component 2 5 and pit 1. Pit protection component 1 45 includes an upper support member 47, a lower support member 48 and a support plate 44. Both the upper support member 47 and the lower support member 48 are provided with insertion holes 50. The lower end of the support plate 44 is provided through the insertion hole 50. The upper end of the support plate 44 is located at the insertion hole 50 of the upper support member 47, and the lower end of the support plate 44 is located at the insertion hole 50 of the lower support member 48. The support plate 44 provides support for pit 1.

[0045] The specific usage is as follows: The screw fixes the hardness-adjustable pressing drive assembly 3 to the side wall of the pit 1 through the fixing hole 51. The hardness-adjustable pressing drive assembly 1 4 and the hardness-adjustable pressing drive assembly 2 5 are arranged in a square shape with their ends in contact within the pit 1. First, the soil in the pit 1 is compacted. When the motor assembly 24 rotates forward, the lead screw pair 26 moves away from the motor assembly 24 along the upper sliding groove 2 14. This pushes the pressing control plate 1 31 to slide along the upper sliding groove 2 14 and the lower sliding groove 20 through the upper sliding engagement piece 1 32. The upper engagement piece 1 33 slides along the upper sliding groove 2 14, and the lower engagement piece 1 34 slides along the lower sliding groove 20. At the same time, the drive plate 28 is driven by the lead screw pair 26 to drive the sliding engagement piece 16. 6 slides along the upper sliding groove 13, and drives the pressing control plate 2 35 to slide through the upper sliding engagement part 2 36. The upper engagement part 2 37 slides along the upper sliding groove 14, and the lower engagement part 2 38 slides along the lower sliding groove 20. With the push of the drive plate 28, the pressing control plate 2 35 slides from the upper support plate 2 12 to the upper support plate 11. The upper engagement part 2 37 slides along the upper sliding groove 13, and the lower engagement part 2 38 slides along the lower sliding groove 19. The upper sliding engagement part 2 36 slides along the upper sliding groove 13. The pressing control plate 1 31 slides from the upper support plate 2 12 to the upper support plate 11. The upper engagement part 1 33 slides along the upper sliding groove 13, the lower engagement part 1 34 slides along the lower sliding groove 19, and the upper sliding engagement part 1 32 slides along the upper sliding groove 2 14.

[0046] When the motor assembly 24 reverses, the lead screw pair 26 moves along the upper slide groove 14 towards the direction away from the motor assembly 24. This causes the upper sliding engagement piece 32 to slide, which in turn drives the pressing control plate 31 to slide. The upper sliding engagement piece 32 slides along the upper slide groove 14, the upper engagement piece 33 slides along the upper slide groove 13, and the lower engagement piece 34 slides along the lower slide groove 19. Simultaneously, the drive plate 28, pushed by the lead screw pair 26, drives the sliding engagement piece 16. The sliding engagement piece 16 slides along the upper slide groove 13, which in turn drives the pressing control plate 35 to slide via the upper sliding engagement piece 36. The upper engagement piece 37 slides along the upper slide groove 19. Slot 13 slides, lower locking part 2 38 slides along lower sliding slot 19, as the drive plate 28 pushes, pressing control plate 1 31 slides from upper support plate 11 to upper support plate 2 12, upper locking part 1 33 slides along upper sliding slot 2 14, lower locking part 1 34 slides along lower sliding slot 2 20, upper sliding locking part 1 32 slides along upper sliding slot 2 14, pressing control plate 2 35 slides from upper support plate 11 to upper support plate 2 12, upper locking part 2 37 slides along upper sliding slot 2 14, lower locking part 2 38 slides along lower sliding slot 2 20, upper sliding locking part 2 36 slides along upper sliding slot 13;

[0047] During the movement of the pressing control plate 31 and the pressing control plate 35, the control plate 39 controls the contraction and recovery of the spring 42. After the spring 42 contracts, it drives the pressing plate 43 to move closer to the side wall of the pit 1. During the recovery process, the spring 42 pushes the pressing plate 43 to compact the soil on the side wall of the pit 1. After the compaction is completed, the spring 42 is in a contracted state. The lower end of the support plate 44 passes through the upper slot 15 and is set in the lower slot 22. The upper end of the support plate 44 is set in the upper slot 15. The pit protection component 45 is movably connected between the hardness-adjustable pressing drive component 4 and the pit 1. The pit protection component 46 is movably connected between the hardness-adjustable pressing drive component 5 and the pit 1. The support plates 44 form a square and are set around the side wall of the pit 1 to support the pit 1.

[0048] When the ground surface above the foundation pit 1 is subjected to large lateral earth pressure, the pressing control plate 1 31 and the pressing control plate 2 35 are adjusted to the corresponding positions. After the spring 42 in the compressed state is de-energized, the pressing plate 43 is supported on the side wall of the support plate 44, which can effectively reduce the impact of lateral earth pressure on the side wall of the foundation pit 1.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pressure-controlled foundation pit support device for mining, characterized in that, The device includes a foundation pit, a foundation pit protection component, and a hardness-adjustable pressing drive component. The foundation pit is located on the ground, the hardness-adjustable pressing drive component is located on the side wall of the foundation pit, the foundation pit protection component is located on the side wall of the foundation pit, and the foundation pit protection component is snapped into the hardness-adjustable pressing drive component. The hardness-adjustable pressing drive assembly includes a hardness-adjustable pressing drive assembly one and a hardness-adjustable pressing drive assembly two. The hardness-adjustable pressing drive assembly one and the hardness-adjustable pressing drive assembly two have the same structure and are arranged in a centrally symmetrical structure. The hardness-adjustable pressing drive assembly one and the hardness-adjustable pressing drive assembly two are arranged in a square shape with their ends in contact within the pit. The hardness-adjustable pressing drive assembly includes an upper L-shaped fixing plate, a drive assembly, a lower L-shaped fixing plate, a pressing control assembly, and a hardness-adjustable pressing assembly. The upper L-shaped fixing plate is fixed to the upper end of the side wall of the pit, and the lower L-shaped fixing plate is fixed to the lower end of the side wall of the pit. The drive assembly is mounted on the upper L-shaped fixing plate. The upper end of the pressing control assembly is movably engaged within the upper L-shaped fixing plate, and the lower end of the pressing control assembly is movably engaged within the lower L-shaped fixing plate. The hardness-adjustable pressing assembly is connected to the side wall of the pressing control assembly. The upper L-shaped fixing plate includes an upper support plate one and an upper support plate two. The upper support plate one has an upper sliding groove one, and the upper support plate two has an upper sliding groove two and an upper locking groove. A sliding locking member is movably engaged in the upper sliding groove one. The lower L-shaped fixing plate includes a lower support plate one and a lower support plate two. The lower support plate one has a lower sliding groove one, and the lower support plate two has a lower sliding groove two and a lower locking groove. The upper sliding groove one and the upper sliding groove two are connected through each other. The lower sliding groove one and the lower sliding groove two are also connected through each other. The pressing control assembly includes pressing control assembly one and pressing control assembly two. Pressing control assembly one includes pressing control plate one. The upper end of pressing control plate one is connected to upper sliding locking component one and upper locking component one. Upper sliding locking component one and upper locking component one are movably locked in upper sliding groove two and upper sliding groove one. The lower end of pressing control plate one is connected to lower locking component one. Lower locking component one is movably locked in lower sliding groove two and lower sliding groove one. The second pressing control component includes a second pressing control plate. The upper end of the second pressing control plate is connected to an upper sliding locking component and an upper locking component. The upper sliding locking component and the upper locking component are movably locked in the upper sliding groove and the upper sliding groove. The upper sliding locking component is movably connected to a sliding locking component. The lower end of the second pressing control plate is connected to a second lower locking component. The second lower locking component is movably locked in the upper sliding groove and the upper sliding groove. Both the first and second pressing control plates are equipped with control plates, and the side walls of the first and second pressing control plates are provided with through holes. The hardness-adjustable pressing components are respectively disposed on the side walls of pressing control plate one and pressing control plate two. The hardness-adjustable pressing components include a telescopic rod, a spring and a pressing plate. One end of the spring is connected to the control plate through a through hole, and the other end of the spring is disposed outside pressing control plate one and pressing control plate two. One end of the telescopic rod is connected to the control plate, and the other end of the telescopic rod is disposed outside pressing control plate one and pressing control plate two. The spring is sleeved outside the telescopic rod. The pressing plate is connected to the other end of the spring and the other end of the telescopic rod. The pressing plate is disposed close to the side wall of the foundation pit.

2. The pressure-controlled foundation pit support device for mining as described in claim 1, characterized in that, The upper support plate 2 has a placement groove. The drive assembly includes a motor assembly, a lead screw, a lead screw pair, and a limiting rod. The motor assembly is located in the placement groove and is a dual-rotation motor assembly. The lead screw is movably located in the placement groove and is connected to the output shaft end of the motor assembly. The limiting rod is located in the placement groove and is positioned close to the lead screw. The lead screw pair is movably located on the lead screw, and one end of the lead screw pair is movably engaged in the upper sliding groove 2. The limiting rod passes through the lead screw pair. The upper sliding engagement piece 1 is movably connected to the lead screw pair.

3. A pressure-controlled foundation pit support device for mining according to claim 2, characterized in that, A drive plate is movably connected to the lead screw pair, and the other end of the drive plate is movably connected to a sliding snap-fit ​​connector.

4. A pressure-controlled foundation pit support device for mining according to claim 3, characterized in that, The upper and lower slots are connected to a support plate. The lower end of the support plate passes through the upper slot and is located in the lower slot. The upper end of the support plate is located in the upper slot. The pressing plate is located between the support plate and the pressing control plate one and the pressing control plate two. The upper support plate two and the lower support plate two are both provided with fixing holes.

5. A pressure-controlled foundation pit support device for mining according to claim 4, characterized in that, The foundation pit protection assembly includes foundation pit protection assembly one and foundation pit protection assembly two. Foundation pit protection assembly one and foundation pit protection assembly two have the same structure. Foundation pit protection assembly one is movably connected between hardness-adjustable pressing drive assembly one and the foundation pit. Foundation pit protection assembly two is movably connected between hardness-adjustable pressing drive assembly two and the foundation pit. Foundation pit protection assembly one includes an upper support member, a lower support member, and a support plate. Both the upper and lower support members are provided with insertion holes. The lower end of the support plate is provided through the insertion hole. The upper end of the support plate is located at the insertion hole of the upper support member, and the lower end of the support plate is located at the insertion hole of the lower support member.

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