Foundation pit supporting device with high safety

Abstract

The invention discloses a high-safety foundation pit supporting device, and belongs to the technical field of foundation pit supporting, the high-safety foundation pit supporting device comprises a shell, a handle is fixedly mounted on the side wall of the shell, supporting plate supporting assemblies are arranged on the two sides of the shell, and a wheel assembly and a reinforcing assembly are arranged at the bottom of the shell; the supporting plate supporting assembly comprises a hydraulic cylinder and a driving shaft, and the hydraulic cylinder is fixedly installed on the top face of the shell. According to the foundation pit supporting device, the supporting plate supporting assembly is arranged, through the design, the foundation pit supporting effect is effectively achieved, scattered parts do not need to be used for supporting the foundation pit in an assembling mode through bolts, and the situation that supporting points are scattered, so that the supporting effect is good is avoided. Therefore, the situation that the foundation pit supporting device collapses easily due to the fact that each supporting point for part assembly is loosened is prevented, the safety of the foundation pit supporting device is greatly improved, and the use effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit support, and in particular relates to a foundation pit support device with high safety. Background Art

[0002] Foundation pit support, referred to as support for short, is a kind of equipment used in construction projects. Foundation pit support can ensure the safety of underground structure construction and the surrounding environment of the foundation pit. It is suitable for open areas around and no important buildings around, and it only seeks stability.

[0003] Today's foundation pit support devices mainly use scattered parts and components to support the foundation pit by assembling them with bolts, which makes the support points of the traditional foundation pit support device relatively scattered. If the support points of each assembly of parts become loose, the foundation pit support device is prone to collapse, which greatly reduces the safety of the foundation pit support device and has a poor use effect. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the current foundation pit supporting device mainly uses scattered parts to support the foundation pit in an assembled manner through bolts, which causes the supporting points of the traditional foundation pit supporting device to be relatively scattered. If the supporting points of each part assembly are loose, the foundation pit supporting device is prone to collapse, which greatly reduces the safety of the foundation pit supporting device and has a poor use effect. A foundation pit supporting device with high safety is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a foundation pit support device with high safety, comprising a shell, a handle is fixedly installed on the side wall of the shell, support plate support assemblies are arranged on both sides of the shell, and a wheel assembly and a reinforcement assembly are arranged at the bottom of the shell.

[0006] As a further description of the above technical solution:

[0007] The guard plate support assembly includes a hydraulic cylinder and a drive shaft. The hydraulic cylinder is fixedly mounted on the top surface of the housing, and a connecting block is fixedly mounted on one end of the output shaft of the hydraulic cylinder.

[0008] As a further description of the above technical solution:

[0009] A toothed bar is fixedly installed on the side wall of the connecting block, threaded columns are fixedly installed on both ends of the driving shaft, a threaded barrel is threadedly installed on the outer wall of the threaded column, and limit blocks are fixedly installed on both sides of the threaded barrel. The limit blocks and the threaded barrel pass through the through holes set on both sides of the outer shell, and the inner walls of the through holes are slidably connected with the limit blocks and the threaded barrel.

[0010] As a further description of the above technical solution:

[0011] A support plate is fixedly installed at one end of the threaded cylinder, an auxiliary rod is fixedly installed on the side wall of the support plate, a limiting plate is fixedly installed on the other end of the auxiliary rod, a spring groove is provided on the side wall of the auxiliary rod, a first spring rod is fixedly installed on the inner wall of the spring groove, and a pin is fixedly installed on the other end of the first spring rod.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the spring groove is slidably connected to the latch, a collar is fixedly mounted on the inner walls of both sides of the shell, a socket is arranged on the inner wall of the collar, the inner wall of the collar is slidably connected to the auxiliary rod, a gear is fixedly mounted on the outer wall of the drive shaft, and the gear is meshingly connected to the toothed bar.

[0014] As a further description of the above technical solution:

[0015] The wheel assembly comprises an integrated plate and legs, a long rod is fixedly mounted on the top of the integrated plate, the top end of the long rod is fixedly mounted on the bottom of the connecting block, and travel rods are fixedly mounted on both sides of the integrated plate.

[0016] As a further description of the above technical solution:

[0017] A long groove is provided on the inner wall of the shell, and the inner wall of the long groove is slidably connected to one end of the travel rod. A first sliding groove is provided on the top of the leg, and a first slider is slidably installed on the inner wall of the first sliding groove. A clamping block is fixedly installed on the top of the first slider, and a pull rod is fixedly installed on the side wall of the clamping block.

[0018] As a further description of the above technical solution:

[0019] A travel groove is provided on the side wall of the shell, and the inner wall of the travel groove is slidably connected to the pull rod. A spring is mounted on the outer wall of the pull rod, one end of the spring is fixedly mounted on the side wall of the block, and the other end of the spring is on the inner wall of the shell. A second slider is fixedly mounted on the side wall of the leg.

[0020] As a further description of the above technical solution:

[0021] A second slide groove is provided on the inner walls on both sides of the shell, and the inner walls of the second slide groove are slidably connected to the second slider. A wheel is fixedly installed on the bottom of the leg, a fixing plate is fixedly installed on the side wall of the leg, a second spring rod is fixedly installed on the bottom of the fixing plate, and the bottom end of the second spring rod is fixedly installed on the inner wall of the bottom of the shell.

[0022] As a further description of the above technical solution:

[0023] The reinforcement component comprises a connecting column, the top end of which is fixedly mounted on the bottom of the integrated board, the bottom end of which is fixedly mounted with a pressing plate, and the bottom of which is provided with a plurality of pins.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] When the gear is engaged with the gear, the gears are engaged with the gears and the drive shaft is rotated. Threaded columns are provided at both ends of the drive shaft. When the drive shaft rotates, the threaded columns at both ends are driven to rotate synchronously. A threaded cylinder is threadedly installed on the outer wall of the threaded cylinder. Limit blocks are fixedly installed on both sides of the threaded cylinder. The limit blocks slide through the through holes provided on both sides of the shell, so that the threaded cylinder cannot be driven to rotate. Therefore, the threaded cylinder is driven to move on its outer wall when the threaded cylinder rotates, and the threaded cylinder slides out from the through holes provided on both sides of the shell to the outside of the shell. When the threaded cylinder is displaced, the support plate is displaced to squeeze the two sides of the foundation pit, so as to play the role of supporting the foundation pit. When the support plate is displaced, the auxiliary rod is driven to move The auxiliary rod moves out from the through holes provided on both sides of the shell to the outside of the shell, and the auxiliary rod slides on the inner wall of the collar at the same time. The pin provided on the side wall of the auxiliary rod will be squeezed by the inner wall of the collar, so that the pin is retracted into the spring groove provided on the side wall of the auxiliary rod. The pin simultaneously squeezes the first spring rod to form a compressed state. Until the pin and the insertion hole provided on the inner wall of the collar are at the same horizontal line, the pin is reset by the elastic force of the first spring rod, and the pin is inserted into the insertion hole. The supporting plate drives the auxiliary rod to slide on the inner wall of the collar. When the supporting plate stops moving, the corresponding pin on the auxiliary rod is inserted into the insertion hole. Through this design, the foundation pit is effectively supported, and there is no need to use scattered parts to support the foundation pit by bolts in an assembled manner, which avoids the support points being relatively scattered, thereby preventing the support points of each parts assembly from loosening, which is prone to collapse of the foundation pit supporting device, greatly increasing the safety of the foundation pit supporting device and having a good use effect.

[0026] 2. In the present invention, by providing a wheel assembly, the pull rod is first pulled outward, the pull rod drives the card block to move, and the card block squeezes the spring at this time to form a compressed state, and the first sliding block provided at the bottom of the card block slides in the first sliding groove provided at the top of the leg, and the pull rod drives the card block until its top surface no longer contacts with the bottom surface of the integrated board, and the connecting block moves downward while driving the long rod to move, and the long rod drives the integrated board, and the travel rod provided on the side wall of the integrated board is synchronously driven to move, and one end of the travel rod slides in the long groove provided on the inner wall of the shell, and after the integrated board moves downward to the height of the leg, the pull rod can be released, and the card block is reset by the elastic force of the spring, and the card block is no longer squeezed by the integrated board, and the leg is also not squeezed by the card block at the same time, and the second spring rod is no longer stretched, and the second spring rod drives the fixed plate to move upward when it is reset, and the fixed plate drives the leg to move upward, and the leg drives the card block to move upward, and the leg drives the second sliding block provided on its side wall to be set on the second side wall of the shell When the supporting operation is completed, the output shaft of the hydraulic cylinder drives the long rod to move upward through the connecting block, and the long rod drives the integrated plate to move upward. While the integrated plate is moving, the card block is squeezed. After the card block is squeezed, it moves horizontally, and the card block squeezes the spring. At this time, the card block is driven downward by the pull rod. At this time, the second spring rod is stretched again, so that the integrated plate is on the top surface of the card block and the pull rod can be released. The card block is driven by the elastic force of the second spring rod to move upward a short distance, and it is not completely reset, so that the card block is in close contact with the integrated plate, but the second spring rod is in a semi-stretched state at this time. At this time, the wheel extends from the inside of the shell, and the foundation pit supporting device can be pushed by the handle. Through this design, the foundation pit supporting device can be effectively carried conveniently and quickly without the need for staff to rely on external carrying tools, which greatly reduces the labor intensity and has a good use effect.

[0027] 3. In the present invention, by providing a reinforcement component, when the foundation pit support device performs support operations on the foundation pit, the integrated plate moves downward while driving the connecting column to move, and the connecting column moves while driving the pressure plate to move downward, and the pressure plate drives a number of pins to move out from the inside of the shell and insert them into the soil. Through this design, the foundation pit support device is effectively made more stable when performing support operations in the foundation pit, thereby greatly improving the stability of the foundation pit support operation and achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a foundation pit supporting device with high safety.

[0029] Figure 2 It is a schematic diagram of the unfolded three-dimensional structure of a foundation pit supporting device with high safety.

[0030] Figure 3The present invention is a schematic diagram of the internal three-dimensional structure of the outer shell of a foundation pit supporting device with high safety.

[0031] Figure 4 The diagram is a schematic diagram of the exploded three-dimensional structure of a support plate support assembly in a foundation pit support device with high safety.

[0032] Figure 5 The present invention is a three-dimensional structural schematic diagram of a wheel assembly in a foundation pit supporting device with high safety.

[0033] Figure 6 The diagram is a schematic diagram of the exploded three-dimensional structure of a reinforcement component in a foundation pit support device with high safety.

[0034] Figure 7 It is a schematic diagram of the enlarged structure at point A in a foundation pit support device with high safety.

[0035] Figure 8 This is a schematic diagram of the enlarged structure of point B in a foundation pit support device with high safety.

[0036] Legend:

[0037] 1. Shell; 2. Handle; 3. Support plate support assembly; 31. Hydraulic cylinder; 32. Toothed bar; 33. Gear; 34. Drive shaft; 35. Threaded column; 36. Threaded barrel; 37. Limit block; 38. Support plate; 39. Auxiliary rod; 310. Limit plate; 311. Ring; 312. Connecting block; 313. Spring groove; 314. First spring rod; 315. Pin; 4. Wheel assembly; 41. Long rod; 42. Integrated board; 43. Travel rod; 44. Block; 45. First slider; 46. Pull rod; 47. Spring; 48. Leg; 49. Second slider; 410. Wheel; 411. Second spring rod; 412. Fixing plate; 5. Reinforcement assembly; 51. Connecting column; 52. Press plate; 53. Pin. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-8 The present invention provides a technical solution: a foundation pit support device with high safety, comprising a shell 1, a handle 2 is fixedly installed on the side wall of the shell 1, a support plate support assembly 3 is arranged on both sides of the shell 1, and a wheel assembly 4 and a reinforcement assembly 5 are arranged at the bottom of the shell 1;

[0040] The support plate supporting assembly 3 includes a hydraulic cylinder 31 and a driving shaft 34. The hydraulic cylinder 31 is fixedly installed on the top surface of the shell 1. A connecting block 312 is fixedly installed on one end of the output shaft of the hydraulic cylinder 31. A toothed bar 32 is fixedly installed on the side wall of the connecting block 312. Threaded columns 35 are fixedly installed on both ends of the driving shaft 34. A threaded barrel 36 is threadedly installed on the outer wall of the threaded column 35. Limiting blocks 37 are fixedly installed on both sides of the threaded barrel 36. The limiting blocks 37 and the threaded barrel 36 pass through the through holes set on both sides of the shell 1. The inner wall of the through hole is slidably connected with the limiting blocks 37 and the threaded barrel 36. A support plate 38 is fixedly installed on one end of the threaded barrel 36. The support plate 38 An auxiliary rod 39 is fixedly installed on the side wall, and a limit plate 310 is fixedly installed on the other end of the auxiliary rod 39. A spring groove 313 is provided on the side wall of the auxiliary rod 39, and a first spring rod 314 is fixedly installed on the inner wall of the spring groove 313. A latch 315 is fixedly installed on the other end of the first spring rod 314. The inner wall of the spring groove 313 and the latch 315 are slidably connected. Rings 311 are fixedly installed on the inner walls of both sides of the shell 1. A jack is provided on the inner wall of the ring 311. The inner wall of the ring 311 is slidably connected with the auxiliary rod 39. A gear 33 is fixedly installed on the outer wall of the drive shaft 34, and the gear 33 is meshed with the toothed bar 32.

[0041] The specific implementation method is as follows: the hydraulic cylinder 31 is started, and one end of the output shaft of the hydraulic cylinder 31 drives the connecting block 312 to move downward, and the connecting block 312 drives the toothed bar 32 to move downward synchronously, and the toothed bar 32 is meshed with the gear 33. When the toothed bar 32 moves downward, it drives the gear 33 to rotate, and the gear 33 drives the driving shaft 34 to rotate while rotating. Both ends of the driving shaft 34 are provided with threaded columns 35. When the driving shaft 34 rotates, the threaded columns 35 at both ends thereof are driven to rotate synchronously. A threaded barrel 36 is threadedly installed on the outer wall of the threaded barrel 35, and limit blocks 37 are fixedly installed on both sides of the threaded barrel 36. The limit blocks 37 slide in the through holes provided on both sides of the shell 1, so that the threaded barrel 36 cannot be driven to rotate while the threaded barrel 36 rotates. Therefore, the threaded barrel 36 is driven to move on its outer wall while the threaded barrel 36 rotates, and the threaded barrel 36 slides out from the through holes provided on both sides of the shell 1 to the outside of the shell 1, and the threaded barrel 36 6 moves, and at the same time, the supporting plate 38 is driven to move, and the supporting plate 38 is squeezed on both sides of the foundation pit to play a role in supporting the foundation pit. When the supporting plate 38 moves, the auxiliary rod 39 is driven to move, and the auxiliary rod 39 moves out of the through holes set on both sides of the shell 1 to the outside of the shell 1. At the same time, the auxiliary rod 39 slides on the inner wall of the ring 311, and the pin 315 set on the side wall of the auxiliary rod 39 is squeezed by the inner wall of the ring 311, so that the pin 315 is retracted into the spring groove set on the side wall of the auxiliary rod 39 Inside 313, the pin 315 squeezes the first spring rod 314 at the same time, making it form a compressed state, until the pin 315 and the socket set on the inner wall of the ring 311 are at the same horizontal line, the pin 315 is reset by the elastic force of the first spring rod 314, the pin 315 is inserted into the socket, the support plate 38 drives the auxiliary rod 39 to slide on the inner wall of the ring 311, and when the support plate 38 stops moving, the corresponding pin 315 on the auxiliary rod 39 is inserted into the socket.

[0042] The wheel assembly 4 includes an integrated plate 42 and a support leg 48, a long rod 41 is fixedly installed on the top of the integrated plate 42, the top of the long rod 41 is fixedly installed on the bottom of the connecting block 312, and travel rods 43 are fixedly installed on both sides of the integrated plate 42. A long groove is provided on the inner wall of the shell 1, and the inner wall of the long groove is slidably connected to one end of the travel rod 43. A first slide groove is provided on the top of the support leg 48, and a first slider 45 is slidably installed on the inner wall of the first slide groove. A card block 44 is fixedly installed on the top of the first slider 45, and a pull rod 46 is fixedly installed on the side wall of the card block 44. A travel groove is provided on the side wall of the shell 1, and the inner wall of the travel groove is connected to The pull rod 46 is slidably connected, a spring 47 is mounted on the outer wall of the pull rod 46, one end of the spring 47 is fixedly mounted on the side wall of the block 44, and the other end of the spring 47 is on the inner wall of the shell 1, a second slider 49 is fixedly mounted on the side wall of the leg 48, a second slide groove is provided on the inner walls on both sides of the shell 1, and the inner wall of the second slide groove is slidably connected with the second slider 49, a wheel 410 is fixedly mounted on the bottom of the leg 48, a fixing plate 412 is fixedly mounted on the side wall of the leg 48, a second spring rod 411 is fixedly mounted on the bottom of the fixing plate 412, and the bottom end of the second spring rod 411 is fixedly mounted on the inner wall of the bottom of the shell 1;

[0043] The specific implementation method is as follows: first pull the pull rod 46 outward, the pull rod 46 drives the block 44 to move, the block 44 squeezes the spring 47 at this time, so that it forms a compressed state, the first slider 45 provided at the bottom of the block 44 slides in the first slide groove provided at the top of the leg 48, the pull rod 46 drives the block 44 until its top surface no longer contacts the bottom surface of the integrated board 42, the connecting block 312 moves downward and drives the long rod 41 to move, the long rod 41 drives the integrated board 42, and the travel rod 43 provided on the side wall of the integrated board 42 is driven to move synchronously, One end of the travel rod 43 slides in the long groove provided on the inner wall of the housing 1. After the integrated plate 42 moves downward to the height of the leg 48, the pull rod 46 can be released, and the block 44 is reset by the elastic force of the spring 47. The block 44 is no longer squeezed by the integrated plate 42, and the leg 48 is also not squeezed by the block 44. The second spring rod 411 is no longer stretched. When the second spring rod 411 is reset, it drives the fixed plate 412 to move upward, and the fixed plate 412 drives the leg 48 to move upward, and the leg 48 drives the block 44 moves upward, the leg 48 drives the second slider 49 provided on the side wall thereof to move on the second slide groove provided on the side wall of the housing 1, and the leg 48 drives the wheel 410 to move upward, so that it retracts into the inner wall of the housing 1 and is recovered. When the supporting operation is completed, the output shaft of the hydraulic cylinder 31 drives the long rod 41 to move upward through the connecting block 312, and the long rod 41 drives the integrated board 42 to move upward. While the integrated board 42 moves, it squeezes the block 44. After the block 44 is squeezed, it moves horizontally, and the block 44 The spring 47 is squeezed, and the block 44 is moved downward by the pull rod 46. At this time, the second spring rod 411 is stretched again, so that the integrated board 42 is on the top surface of the block 44, and the pull rod 46 can be released. The elastic force of the second spring rod 411 drives the block 44 to move upward a short distance, and it is not completely reset, so that the block 44 is in close contact with the integrated board 42, but the second spring rod 411 is in a semi-stretched state at this time. At this time, the wheel 410 extends from the inside of the shell 1, and the foundation pit support device can be pushed by the handle 2.

[0044] The reinforcement component 5 includes a connecting column 51, the top of which is fixedly mounted on the bottom of the integrated board 42, and a pressing plate 52 is fixedly mounted on the bottom of the connecting column 51, and a plurality of pins 53 are arranged at the bottom of the pressing plate 52;

[0045] The specific implementation example is as follows: when the foundation pit supporting device is performing supporting operations on the foundation pit, the integrated plate 42 moves downward while driving the connecting column 51 to move, and the connecting column 51 moves while driving the pressure plate 52 to move downward, and the pressure plate 52 drives a number of pins 53 to move out from the inside of the shell 1 and insert them into the soil.

[0046] Working principle: start the hydraulic cylinder 31, one end of the output shaft of the hydraulic cylinder 31 drives the connecting block 312 to move downward, and the connecting block 312 drives the toothed bar 32 to move downward synchronously, and the toothed bar 32 is meshed with the gear 33. When the toothed bar 32 moves downward, it drives the gear 33 to rotate, and the gear 33 drives the driving shaft 34 to rotate while rotating. Both ends of the driving shaft 34 are provided with threaded columns 35. When the driving shaft 34 rotates, it drives the threaded columns 35 at both ends to rotate synchronously. A threaded barrel 36 is threadedly installed on the outer wall of the threaded barrel 35, and limit blocks 37 are fixedly installed on both sides of the threaded barrel 36. The limit blocks 37 slide in the through holes set on both sides of the shell 1, so that the threaded column 35 cannot drive the threaded barrel 36 to rotate while rotating. The cylinder 36 rotates, so the threaded column 35 rotates and drives the threaded cylinder 36 to move on its outer wall, and the threaded cylinder 36 slides out from the through holes set on both sides of the shell 1 to the outside of the shell 1. The displacement of the threaded cylinder 36 drives the supporting plate 38 to move, and the supporting plate 38 squeezes the two sides of the foundation pit to play a role in supporting the foundation pit. The displacement of the supporting plate 38 drives the auxiliary rod 39 to move, and the auxiliary rod 39 moves out from the through holes set on both sides of the shell 1 to the outside of the shell 1. The auxiliary rod 39 slides on the inner wall of the collar 311 at the same time, and the latch 315 set on the side wall of the auxiliary rod 39 will be squeezed by the inner wall of the collar 311, so that the latch 315 is retracted into the spring groove 313 set on the side wall of the auxiliary rod 39, and the latch 315 simultaneously presses the first spring rod 3 14 is squeezed to form a compressed state, until the pin 315 is at the same horizontal line as the socket set on the inner wall of the ring 311, the pin 315 is reset by the elastic force of the first spring rod 314, the pin 315 is inserted into the socket, the supporting plate 38 drives the auxiliary rod 39 to slide on the inner wall of the ring 311, when the supporting plate 38 stops moving, the corresponding pin 315 on the auxiliary rod 39 is inserted into the socket, the pull rod 46 is first pulled outward, the pull rod 46 drives the block 44 to move, the block 44 squeezes the spring 47 at this time to form a compressed state, the first slider 45 set at the bottom of the block 44 slides in the first slide groove set at the top of the leg 48, the pull rod 46 drives the block 44 until its top surface is no longer in contact with the bottom surface of the integrated board 42 When the connecting block 312 moves downward, it drives the long rod 41 to move, and the long rod 41 drives the integrated board 42. The travel rod 43 arranged on the side wall of the integrated board 42 is synchronously driven to move, and one end of the travel rod 43 slides in the long groove arranged on the inner wall of the shell 1. After the integrated board 42 moves downward to the height of the support leg 48, the pull rod 46 can be released, and the block 44 is reset by the elastic force of the spring 47. The block 44 is no longer squeezed by the integrated board 42, and the support leg 48 is also not squeezed by the block 44. The second spring rod 411 is no longer stretched. When the second spring rod 411 is reset, it drives the fixed plate 412 to move upward, and the fixed plate 412 drives the support leg 48 to move upward, and the support leg 48 drives the block 44 to move upward.The support leg 48 drives the second slider 49 provided on its side wall to move on the second slide groove provided on the side wall of the shell 1, and the support leg 48 drives the wheel 410 to move upward, so that it is retracted into the inner wall of the shell 1 and is recovered. When the support operation is completed, the output shaft of the hydraulic cylinder 31 drives the long rod 41 to move upward through the connecting block 312, and the long rod 41 drives the integrated board 42 to move upward. While the integrated board 42 moves, it squeezes the block 44. After the block 44 is squeezed, it moves horizontally, and the block 44 squeezes the spring 47. At this time, the block 44 is driven to move downward through the pull rod 46. At this time, the second spring rod 411 is stretched again, so that After the integrated board 42 is on the top surface of the block 44, the pull rod 46 can be released, and the block 44 is moved upward by the elastic force of the second spring rod 411 for a short distance. It is not completely reset, so that the block 44 is in close contact with the integrated board 42, but the second spring rod 411 is in a semi-stretched state at this time. At this time, the wheel 410 extends from the inside of the shell 1, and the foundation pit support device can be pushed by the handle 2. When the foundation pit support device supports the foundation pit, the integrated board 42 moves downward and drives the connecting column 51 to move. The connecting column 51 moves and drives the pressing plate 52 to move downward. The pressing plate 52 drives a number of pins 53 to move out from the inside of the shell 1 and insert them into the soil.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foundation pit support device with high safety, comprising a housing (1), characterized in that: A handle (2) is fixedly mounted on the side wall of the shell (1), a guard plate support assembly (3) is arranged on both sides of the shell (1), and a wheel assembly (4) and a reinforcement assembly (5) are arranged at the bottom of the shell (1).

2. A foundation pit support device with high safety according to claim 1, characterized in that: The guard plate support assembly (3) comprises a hydraulic cylinder (31) and a drive shaft (34); the hydraulic cylinder (31) is fixedly mounted on the top surface of the housing (1); and a connecting block (312) is fixedly mounted on one end of the output shaft of the hydraulic cylinder (31).

3. A foundation pit support device with high safety according to claim 2, characterized in that: A toothed bar (32) is fixedly mounted on the side wall of the connecting block (312), threaded columns (35) are fixedly mounted on both ends of the driving shaft (34), a threaded barrel (36) is threadedly mounted on the outer wall of the threaded column (35), and limit blocks (37) are fixedly mounted on both sides of the threaded barrel (36), the limit blocks (37) and the threaded barrel (36) pass through through holes provided on both sides of the housing (1), and the inner walls of the through holes are slidably connected to the limit blocks (37) and the threaded barrel (36).

4. A foundation pit supporting device with high safety according to claim 3, characterized in that: A support plate (38) is fixedly mounted on one end of the threaded cylinder (36), an auxiliary rod (39) is fixedly mounted on the side wall of the support plate (38), a limit plate (310) is fixedly mounted on the other end of the auxiliary rod (39), a spring groove (313) is provided on the side wall of the auxiliary rod (39), a first spring rod (314) is fixedly mounted on the inner wall of the spring groove (313), and a latch (315) is fixedly mounted on the other end of the first spring rod (314).

5. A foundation pit supporting device with high safety according to claim 4, characterized in that: The inner wall of the spring groove (313) is slidably connected to the latch pin (315); a collar (311) is fixedly mounted on the inner walls of both sides of the housing (1); a plug hole is arranged on the inner wall of the collar (311); the inner wall of the collar (311) is slidably connected to the auxiliary rod (39); a gear (33) is fixedly mounted on the outer wall of the drive shaft (34); the gear (33) is meshingly connected to the toothed bar (32).

6. A foundation pit supporting device with high safety according to claim 5, characterized in that: The wheel assembly (4) comprises an integrated plate (42) and legs (48); a long rod (41) is fixedly mounted on the top of the integrated plate (42); the top end of the long rod (41) is fixedly mounted on the bottom of the connecting block (312); and travel rods (43) are fixedly mounted on both sides of the integrated plate (42).

7. A foundation pit supporting device with high safety according to claim 6, characterized in that: A long groove is provided on the inner wall of the shell (1), and the inner wall of the long groove is slidably connected to one end of the travel rod (43). A first sliding groove is provided on the top of the support leg (48), and a first slider (45) is slidably installed on the inner wall of the first sliding groove. A clamping block (44) is fixedly installed on the top of the first slider (45), and a pull rod (46) is fixedly installed on the side wall of the clamping block (44).

8. A foundation pit supporting device with high safety according to claim 7, characterized in that: A travel groove is provided on the side wall of the shell (1), and the inner wall of the travel groove is slidably connected to the pull rod (46). A spring (47) is mounted on the outer wall of the pull rod (46), and one end of the spring (47) is fixedly mounted on the side wall of the block (44), and the other end of the spring (47) is located on the inner wall of the shell (1). A second slider (49) is fixedly mounted on the side wall of the support leg (48).

9. A foundation pit supporting device with high safety according to claim 8, characterized in that: A second slide groove is provided on the inner walls on both sides of the shell (1), and the inner walls of the second slide groove are slidably connected to the second slider (49). A wheel (410) is fixedly installed at the bottom of the support leg (48), a fixing plate (412) is fixedly installed on the side wall of the support leg (48), a second spring rod (411) is fixedly installed at the bottom of the fixing plate (412), and the bottom end of the second spring rod (411) is fixedly installed on the inner wall at the bottom of the shell (1).

10. A foundation pit supporting device with high safety according to claim 9, characterized in that: The reinforcement component (5) comprises a connecting column (51), the top end of which is fixedly mounted on the bottom of the integrated board (42), a pressing plate (52) is fixedly mounted on the bottom end of the connecting column (51), and a plurality of pins (53) are arranged at the bottom of the pressing plate (52).

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