An assembled foundation pit support device

Abstract

The present invention relates to the technical field of foundation pit support, and discloses an assembled foundation pit support device, including a plurality of support mechanisms, and two adjacent support mechanisms are assembled and connected by an assembly frame, the support mechanism includes a base, the top of the base is fixedly connected with a U-shaped support frame, and the bottom of the base is fixedly connected with a plurality of fastening rods. The assembled foundation pit support device can meet the support work of different slopes by installing the slope protection plate inside the U-shaped frame in a rotating manner, including the support work of the vertical inner side of the foundation pit, thereby improving the diversity of its foundation pit support. By installing the anchor frame on the upper surface of the foundation pit, the unfolded end of the slope protection plate can be reinforced by a steel rope, which not only improves the stability of the slope protection plate slope reinforcement, but also solves the problem that the existing technology uses diagonal bracing to reinforce, and the reinforcement strength is not strong and prone to rollover.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit support, and in particular to an assembled foundation pit support device. Background Art

[0002] The foundation pit is a soil pit excavated at the foundation design position according to the base elevation and the foundation plane size. The Chinese invention patent with the publication number CN115217120B discloses an assembled foundation pit support device, including a support device and a protective device, wherein the protective device includes an anti-collapse component, a protective plate, a steel pipe straight rod, a steel pipe cross bar, a support plate, a fixing plate, a base, a tapered rod and a fastening plate. The present invention realizes rapid support and rapid assembly with soil excavation by using prefabricated protective devices for assembly. The combination of the protective device and the support device maximizes the support effect and avoids the soil layer inside the foundation pit from collapsing inward. The assembly and assembly structure is adopted to improve the installation and disassembly speed. At the same time, the combination of the support device and the protective device makes the device structure stable, the support stability is good and the environmental tolerance is high. After the foundation pit support is completed, the support device can be recycled and reused, which reduces the construction cost. By adding the anti-collapse component, the guide plate can make the rainwater outside the foundation pit flow to both sides on rainy days to avoid damage to the support device when the rainwater is too large and the impact force is strong.

[0003] In the related art, the existing foundation pit support devices generally adopt concrete slabs for support or adopt assembled support mechanisms for support. However, when the existing assembled support mechanisms support the foundation pit, in order to improve its support strength, it is generally necessary to adopt corresponding diagonal braces for support reinforcement work. However, when supporting a deep foundation pit, it is not convenient to reinforce the slope surface at the high part of the inner wall of the foundation pit. It is necessary to adjust the angle and length of the diagonal brace according to the support height. The greater the support height, the greater the angle and length of the diagonal brace, which seriously occupies the internal space of the foundation pit. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an assembled foundation pit supporting device, which can meet the support work of different slopes by installing the slope protection plate inside the U-shaped frame in a rotating manner, including the support work of the vertical inner side of the foundation pit, thereby improving the diversity of the foundation pit support. The U-shaped frame that can be adjusted up and down is convenient for adjusting the height of the slope protection plate to meet the support work of different heights. The anchor frame is installed on the upper surface of the foundation pit, and the unfolded end of the slope protection plate can be reinforced by steel ropes, further improving the stability of the slope protection plate slope reinforcement, and solving the problem that the prior art uses diagonal bracing to reinforce, and the reinforcement strength is not strong and it is easy to roll over.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembled foundation pit support device, comprising a plurality of support mechanisms, and two adjacent support mechanisms are assembled and connected through an assembly frame, the support mechanism comprises a base, the top of the base is fixedly connected with a U-shaped support frame, the bottom of the base is fixedly connected with a plurality of fastening rods, the U-shaped support frame is provided with a slope protection component that can be adjusted up and down and at an angle, the base is provided with an auxiliary component that is fastened to the side wall of the foundation pit, the bottom of the base is slidably connected with a reinforcement frame, the top of the foundation pit is provided with a reinforcement component, and the reinforcement component is connected to the slope protection component, and the reinforcement component is transmission-connected to the reinforcement frame through a transmission component;

[0008] The slope protection assembly comprises a U-shaped frame slidably connected to the inside of the U-shaped support frame, and the inside of the U-shaped frame is rotatably connected to the slope protection plate;

[0009] The reinforcement assembly comprises an anchor frame fixed above the foundation pit, a steel rope is connected to the anchor frame, and one end of the steel rope is connected to the slope protection plate.

[0010] Preferably, the slope protection assembly includes a group of positioning holes opened on both sides of the U-shaped support frame, and insertion holes are opened on both sides of the U-shaped frame, and a T-shaped pin is inserted between two of the insertion holes and the corresponding two positioning holes.

[0011] Preferably, two notches are provided on one side of the slope protection plate, and fixing rods are fixedly connected inside the two notches, a connecting rope is fixedly connected to one end of the steel rope, and both ends of the connecting rope are fixedly connected to a first suspension hook that cooperates with the fixing rod for suspension.

[0012] Preferably, a plurality of reinforcing plates are fixedly connected to the bottom of the U-shaped frame, and the plurality of reinforcing plates are slidably connected to the inside of the U-shaped supporting frame.

[0013] Preferably, the bottom of the anchor frame is fixedly connected to an anchor rod frame, the top of the anchor frame is fixedly connected to a U-shaped bracket, the inside of the U-shaped bracket is rotatably connected to a first guide wheel, the top of the U-shaped support frame is rotatably connected to a second guide wheel through the bracket, an electric winding part is provided on the steel rope, the steel rope is in contact with the outer surfaces of the first guide wheel and the second guide wheel, and the other end of the steel rope is fixedly connected to a second suspension hook.

[0014] Preferably, the transmission assembly includes a U-shaped frame fixed to one side of the U-shaped support frame, a transmission plate is slidably connected to the inside of the U-shaped frame, a hanging ring that cooperates with the second suspension hook is fixedly connected to the top of the transmission plate, a plurality of first tooth plates are fixedly connected to the bottom of the transmission plate, one side of the U-shaped frame is rotatably connected to a rotating shaft through a bracket, and a plurality of gears are fixedly connected to the outer surface of the rotating shaft.

[0015] Preferably, the top of the base is slidably connected to a plurality of second tooth plates via a sliding frame, and the bottoms of the plurality of second tooth plates are fixed to the top of the reinforcement frame, the plurality of second tooth plates and the plurality of first tooth plates are respectively meshed with the outer surfaces of the plurality of gears, and the plurality of second tooth plates and the plurality of first tooth plates are symmetrical.

[0016] Preferably, the auxiliary component includes a plurality of anchor rods passing through the interior of the base, and one end of each of the plurality of anchor rods is fixedly connected with a pull ring and a push block.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides an assembled foundation pit support device, which has the following beneficial effects:

[0019] 1. The present invention can meet the support work of different slopes by installing the slope protection plate inside the U-shaped frame in a rotatable manner, including the support work of the vertical inner side of the foundation pit, thereby improving the diversity of the foundation pit support. The U-shaped frame that can be adjusted up and down is convenient for adjusting the height of the slope protection plate to meet the support work of different heights. The anchor frame is installed on the upper surface of the foundation pit, and the unfolded end of the slope protection plate can be reinforced by steel ropes, which not only improves the stability of the slope protection plate slope reinforcement, but also solves the problem of the prior art that the reinforcement is carried out by means of diagonal braces, the reinforcement strength is not strong, and the rollover is easy to occur, and solves the problem that the foundation pit space is occupied by installing different numbers of diagonal braces in the foundation pit, which affects the subsequent geotechnical engineering process.

[0020] 2. The present invention is connected with the second suspension hook in the reinforcement assembly through a hanging ring. Through the contraction of the other end of the steel rope, the transmission plate can be driven to move upward through the second suspension hook, and then the first tooth plates can be driven to move upward. Through the upward movement of the first tooth plate, the second tooth plate can be driven to move downward through the gear. Through the downward movement of the second tooth plate, the reinforcement frame can be driven to move downward, thereby improving the grip of its support device and effectively utilizing the driving force of the collapse of the inner wall of the foundation pit. It not only further improves the stability of the chassis position of the support device, but also can further enhance the support performance of the collapse of the inner wall of the foundation pit.

[0021] 3. The present invention inserts a plurality of anchor rods under the inner wall of the foundation pit, which can not only further improve the stability of the base inside the foundation pit, but also fasten the base to the bottom of the inner wall of the foundation pit by adopting a transverse penetration method for reinforcement, thereby solving the problem that the chassis of the support device in the prior art is generally only reinforced with the bottom of the foundation pit, so that if the collapse force of the side wall of the foundation pit is too large, the support device is easy to break. The setting of the push block makes it convenient for the staff to install the anchor rod by knocking, and the setting of the pull ring makes it convenient for the staff to pull out the anchor rod better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the assembled foundation pit supporting device of the present invention;

[0023] Figure 2 It is a rear view of the structure of the assembled foundation pit supporting device of the present invention;

[0024] Figure 3 The figure is a schematic diagram of the assembly of the U-shaped support frame and the transmission assembly of the present invention;

[0025] Figure 4 For the present invention Figure 1 Schematic diagram of the structure of the reinforcement component;

[0026] Figure 5 For the present invention Figure 3 Schematic diagram of the structure of the middle U-shaped support frame;

[0027] Figure 6 For the present invention Figure 3 The structural diagram of the transmission assembly;

[0028] Figure 7 For the present invention Figure 1 Structural diagram of the middle slope protection component;

[0029] Figure 8 It is a schematic diagram of the working state of the assembled foundation pit supporting device of the present invention.

[0030] In the figure: 1. base; 2. U-shaped support frame; 3. fastening rod;

[0031] 4. Slope protection assembly; 41. U-shaped frame; 42. Slope protection board; 43. Positioning hole; 44. Insertion hole; 45. T-shaped latch; 46. Fixing rod; 47. Reinforcement plate;

[0032] 5. Auxiliary components; 51. Anchor rod; 52. Pull ring; 53. Push block;

[0033] 6. Reinforcement frame;

[0034] 7. reinforcement assembly; 71. anchoring frame; 72. steel rope; 73. connecting rope; 74. first suspension hook; 75. anchor rod rack; 76. U-shaped bracket; 77. first guide wheel; 78. second guide wheel; 79. electric winding member; 710. second suspension hook;

[0035] 8. Transmission assembly; 81. U-shaped frame; 82. Transmission plate; 83. First tooth plate; 84. Rotating shaft; 85. Gear; 86. Second tooth plate; 87. Sliding frame. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1:

[0038] See attached Figure 1-8 , an assembled foundation pit support device, including a plurality of support mechanisms, and two adjacent support mechanisms are assembled and connected through an assembly frame, the support mechanism includes a base 1, a U-shaped support frame 2 is fixedly connected to the top of the base 1, a plurality of fastening rods 3 are fixedly connected to the bottom of the base 1, a slope protection component 4 that can be adjusted up and down and at an angle is arranged inside the U-shaped support frame 2, an auxiliary component 5 fastened to the side wall of the foundation pit is arranged inside the base 1, a reinforcement frame 6 is slidably connected to the bottom of the base 1, a reinforcement component 7 is arranged on the top of the foundation pit, and the reinforcement component 7 is connected to the slope protection component 4, and the reinforcement component 7 is transmission-connected to the reinforcement frame 6 through a transmission component 8;

[0039] The base 1 is installed on the inner bottom of the foundation pit by using a plurality of fastening rods 3, and the inner side of the foundation pit can be supported by the U-shaped support frame 2. The auxiliary component 5 is provided to further strengthen the installation of the base 1, and different reinforcement methods are used to avoid the problem of the base 1 being broken due to excessive collapse force. The inner side of the foundation pit at different angles above the foundation pit can be reinforced separately by the slope protection component 4, thereby improving the support performance above the foundation pit. The slope protection component 4 can be further reinforced during the reinforcement process by the reinforcement component 7, thereby further improving the foundation pit slope support reinforcement performance.

[0040] The slope protection assembly 4 includes a U-shaped frame 41 slidably connected to the inside of the U-shaped support frame 2, and a slope protection plate 42 is rotatably connected inside the U-shaped frame 41;

[0041] The slope protection plate 42 is installed inside the U-shaped frame 41 in a rotating manner, so that the support work of different slopes can be met, including the support work of the vertical inner side of the foundation pit, thereby improving the diversity of the foundation pit support. The U-shaped frame 41 that can be adjusted up and down facilitates the height adjustment of the slope protection plate 42, thereby meeting the support work of different heights.

[0042] Both sides of the top of the U-shaped support frame 2 are provided with slide grooves for the U-shaped frame 41 to slide up and down, which not only facilitates the U-shaped frame 41 to slide up and down, but also facilitates the disassembly and assembly work by sliding the U-shaped frame 41 to the top;

[0043] The reinforcement assembly 7 includes an anchor frame 71 fixed above the foundation pit, a steel rope 72 is connected to the anchor frame 71, and one end of the steel rope 72 is connected to the slope protection plate 42;

[0044] By installing the anchor frame 71 on the upper surface of the foundation pit, the unfolded end of the slope protection plate 42 can be reinforced by the steel rope 72, which not only improves the stability of the slope reinforcement of the slope protection plate 42, but also solves the problem of the prior art of reinforcement by diagonal bracing, which has weak reinforcement strength and is prone to rollover, and solves the problem of installing different numbers of diagonal braces in the foundation pit, which occupies the foundation pit space and affects the subsequent geotechnical engineering process.

[0045] See attached Figure 7 The slope protection component 4 includes a group of positioning holes 43 opened on both sides of the U-shaped support frame 2, and insertion holes 44 are opened on both sides of the U-shaped frame 41. A T-shaped pin 45 is inserted between the two insertion holes 44 and the corresponding two positioning holes 43;

[0046] By moving the U-shaped frame 41 up and down, the height of the slope protection plate 42 can be adjusted to meet the support work of slopes of different heights. When the insertion hole 44 on the U-shaped frame 41 moves to coincide with the positioning hole 43, the stability of the height adjustment of the slope protection plate 42 can be improved by inserting a T-shaped pin 45 into the overlapping hole.

[0047] See attached Figure 4 and Figure 7 Two notches are provided on one side of the slope protection plate 42, and the interiors of the two notches are fixedly connected to the fixing rods 46, one end of the steel rope 72 is fixedly connected to the connecting rope 73, and both ends of the connecting rope 73 are fixedly connected to the first hanging hook 74 that cooperates with the fixing rod 46 for hanging;

[0048] The first suspension hook 74 is inserted into the notch to be suspended and connected to the fixing rod 46. The steel rope 72 is provided to reinforce the unfolded end of the slope protection board 42, thereby improving the stability of the slope protection board 42 in reinforcing the slope surface.

[0049] See attached Figure 5 and Figure 7 , a plurality of reinforcing plates 47 are fixedly connected to the bottom of the U-shaped frame 41, and the plurality of reinforcing plates 47 are slidably connected to the inside of the U-shaped support frame 2;

[0050] A plurality of reinforcing plates 47 are provided to reinforce the middle portion of the U-shaped support frame 2 to prevent the middle portion of the U-shaped support frame 2 from falling off when the foundation pit is too deep and the slope protection assembly 4 moves to the top, thereby causing the middle portion to break during the subsequent support process.

[0051] See attached Figure 4 and Figure 5The bottom of the anchor frame 71 is fixedly connected with an anchor rod frame 75, the top of the anchor frame 71 is fixedly connected with a U-shaped bracket 76, the inside of the U-shaped bracket 76 is rotatably connected with a first guide wheel 77, the top of the U-shaped support frame 2 is rotatably connected with a second guide wheel 78 through the bracket, an electric winding member 79 is provided on the steel rope 72, the steel rope 72 is in contact with the outer surfaces of the first guide wheel 77 and the second guide wheel 78, and the other end of the steel rope 72 is fixedly connected with a second suspension hook 710;

[0052] The other end of the steel rope 72 is fixedly connected with a second suspension hook 710, and the second suspension hook 710 is used to connect the transmission assembly 8, and the reinforcement frame 6 moves downward through the transmission assembly 8, thereby forming a two-way reinforcement operation;

[0053] The first guide wheel 77 and the second guide wheel 78 are provided to guide the steel rope 72, so that when the inner wall of the foundation pit is under collapse pressure, one end of the steel rope 72 can be driven to be driven, and then the other end of the steel rope 72 can be driven to be retracted. The retraction of the other end of the steel rope 72 can drive the transmission assembly 8 through the second suspension hook 710, so that the reinforcement frame 6 is inserted into the depth of the foundation pit, thereby increasing the gripping strength of its base 1, which not only improves the support performance of its support device, but also effectively offsets the driving force of the collapse of the inner wall of the foundation pit, thereby realizing two-way reinforcement work;

[0054] The electric winding member 79 adopts the mechanism used in the prior art for unfolding or retracting the steel rope 72 to meet the fastening and installation work of different positions of the anchor frame 71. The electric winding member 79 is composed of a winding frame, a winding roller, a forward and reverse motor and a locking member.

[0055] Embodiment 2: Based on embodiment 1, the difference is that;

[0056] See attached Figure 6 The transmission assembly 8 includes a U-shaped frame 81 fixed to one side of the U-shaped support frame 2, a transmission plate 82 is slidably connected inside the U-shaped frame 81, a hanging ring that cooperates with the second hanging hook 710 is fixedly connected to the top of the transmission plate 82, a plurality of first tooth plates 83 are fixedly connected to the bottom of the transmission plate 82, a rotating shaft 84 is rotatably connected to one side of the U-shaped frame 81 through a bracket, and a plurality of gears 85 are fixedly connected to the outer surface of the rotating shaft 84;

[0057] By connecting the hanging ring with the second hanging hook 710 in the reinforcement assembly 7, the other end of the steel rope 72 can be contracted to drive the transmission plate 82 to move upward through the second hanging hook 710, and further drive the first tooth plates 83 to move upward.

[0058] The top of the base 1 is slidably connected with a plurality of second tooth plates 86 through a sliding frame 87, and the bottoms of the plurality of second tooth plates 86 are fixed to the top of the reinforcement frame 6, and the plurality of second tooth plates 86 and the plurality of first tooth plates 83 are respectively meshed with the outer surfaces of the plurality of gears 85, and the plurality of second tooth plates 86 and the plurality of first tooth plates 83 are symmetrical;

[0059] The plurality of second tooth plates 86 and the plurality of first tooth plates 83 are respectively meshed with the outer surfaces of the plurality of gears 85, and the plurality of second tooth plates 86 and the plurality of first tooth plates 83 are symmetrical, so that when the first tooth plates 83 move upward, the plurality of gears 85 can be driven to rotate, and then the second tooth plates 86 can be driven by the gears 85 to move in the opposite direction, that is, move downward;

[0060] Through the upward movement of the first tooth plate 83, the second tooth plate 86 can be driven to move downward through the gear 85, and through the downward movement of the second tooth plate 86, the reinforcement frame 6 can be driven to move downward, thereby improving the grip of its support device and effectively utilizing the driving force of the collapse of the inner wall of the foundation pit, which not only further improves the stability of the chassis position of the support device, but also can further enhance the support performance of the collapse of the inner wall of the foundation pit.

[0061] Embodiment 3: Based on embodiment 1, the difference is that;

[0062] See attached Figure 5 The auxiliary component 5 includes a plurality of anchor rods 51 penetrating the interior of the base 1, and one end of each of the plurality of anchor rods 51 is fixedly connected with a pull ring 52 and a push block 53;

[0063] By inserting a plurality of anchor rods 51 under the inner wall of the foundation pit, not only can the stability of the base 1 inside the foundation pit be further improved, but also the base and the bottom of the inner wall of the foundation pit can be fastened by reinforcing it by traverse penetration;

[0064] The invention solves the problem that the chassis of the supporting device in the prior art is generally only reinforced with the bottom of the foundation pit, so that if the collapse force of the side wall of the foundation pit is too large, the supporting device is easily broken;

[0065] The setting of the pushing block 53 makes it easier for the staff to install the anchor rod 51 by knocking, and the setting of the pull ring 52 makes it easier for the staff to pull out the anchor rod 51.

[0066] The working principle of the assembled foundation pit support device of the present invention is as follows:

[0067] Assemble the various components of the support device, then install the base 1 at the bottom of the foundation pit through a number of fastening rods 3, and tighten one side of the base 1 against the corner of the foundation pit, insert a row of anchor rods 51 in the auxiliary component 5 into the inner side of the bottom of the foundation pit to improve the stability of the base 1, and finally insert the reinforcement frame 6 through the base 1 into the bottom of the foundation pit to strengthen the stability of the base 1 again;

[0068] Then, according to the height of the foundation pit, the slope protection assembly 4 is moved to the top, and the slope protection plate 42 is in contact with the top of the inner side of the foundation pit, and is fastened by two sets of T-shaped pins 45;

[0069] Finally, the anchor frame 71 in the reinforcement assembly 7 is installed above the foundation pit, and the steel rope 72 is inserted between the two guide wheels, and connected to the slope protection board 42 through the first hanging hooks 74 at both ends of the connecting rope 73, and connected to the hanging ring on the top of the transmission plate 82 in the transmission assembly 8 through the second hanging hook 710. Finally, the steel rope 72 is wound up by the electric winding member 79, so that the winding driving force of the steel rope 72 drives the slope protection board 42 to closely contact the inner side of the foundation pit, forming a full range of support work;

[0070] If a large collapse force occurs on the inner side of the foundation pit, the collapse force will squeeze the slope protection plate 42 in the reverse direction. When the slope protection plate 42 is driven in the reverse direction, one end of the steel rope 72 can be stretched, and the other end of the steel rope 72 can be indirectly driven to contract, thereby driving the transmission plate 82 and the two first tooth plates 83 to move upward. Through the upward movement of the first tooth plate 83, the second tooth plate 86 can be driven downward by the gear 85. Through the downward movement of the second tooth plate 86, the reinforcement frame 6 can be driven downward, thereby improving the grip of its base 1, not only improving the support performance of its support device, but also effectively offsetting the driving force of the collapse of the inner wall of the foundation pit, thereby realizing two-way reinforcement work.

[0071] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled foundation pit support device, comprising a plurality of support mechanisms, wherein two adjacent support mechanisms are assembled and connected via an assembly frame, wherein the support mechanism comprises a base (1), a U-shaped support frame (2) is fixedly connected to the top of the base (1), and a plurality of fastening rods (3) are fixedly connected to the bottom of the base (1), characterized in that: The U-shaped support frame (2) is provided with a slope protection component (4) that can be adjusted up and down and at an angle, the base (1) is provided with an auxiliary component (5) that is fastened to the side wall of the foundation pit, the bottom of the base (1) is slidably connected to a reinforcement frame (6), the top of the foundation pit is provided with a reinforcement component (7), and the reinforcement component (7) is connected to the slope protection component (4), and the reinforcement component (7) is transmission-connected to the reinforcement frame (6) via a transmission component (8); The slope protection assembly (4) comprises a U-shaped frame (41) slidably connected to the inside of the U-shaped support frame (2), and a slope protection plate (42) is rotatably connected to the inside of the U-shaped frame (41); The reinforcement assembly (7) comprises an anchor frame (71) fixed above the foundation pit, a steel rope (72) is connected to the anchor frame (71), and one end of the steel rope (72) is connected to the slope protection plate (42); The bottom of the anchor frame (71) is fixedly connected to an anchor rod frame (75), the top of the anchor frame (71) is fixedly connected to a U-shaped bracket (76), the interior of the U-shaped bracket (76) is rotatably connected to a first guide wheel (77), the top of the U-shaped support frame (2) is rotatably connected to a second guide wheel (78) via the bracket, an electric winding member (79) is provided on the steel rope (72), the steel rope (72) is in contact with the outer surfaces of the first guide wheel (77) and the second guide wheel (78), and the other end of the steel rope (72) is fixedly connected to a second suspension hook (710).

2. The assembled foundation pit support device according to claim 1, characterized in that: The slope protection assembly (4) comprises a group of positioning holes (43) opened on both sides of the U-shaped support frame (2), and insertion holes (44) are opened on both sides of the U-shaped frame (41), and a T-shaped pin (45) is inserted between the two insertion holes (44) and the corresponding two positioning holes (43).

3. The assembled foundation pit support device according to claim 1, characterized in that: Two notches are provided on one side of the slope protection plate (42), and the interiors of the two notches are fixedly connected to fixing rods (46), one end of the steel rope (72) is fixedly connected to a connecting rope (73), and both ends of the connecting rope (73) are fixedly connected to first hanging hooks (74) that cooperate with the fixing rods (46) for hanging.

4. The assembled foundation pit support device according to claim 1, characterized in that: A plurality of reinforcing plates (47) are fixedly connected to the bottom of the U-shaped frame (41), and the plurality of reinforcing plates (47) are slidably connected to the inside of the U-shaped support frame (2).

5. The assembled foundation pit support device according to claim 1, characterized in that: The transmission assembly (8) comprises a U-shaped frame (81) fixed to one side of the U-shaped support frame (2); a transmission plate (82) is slidably connected to the interior of the U-shaped frame (81); a hanging ring that cooperates with the second hanging hook (710) is fixedly connected to the top of the transmission plate (82); a plurality of first tooth plates (83) are fixedly connected to the bottom of the transmission plate (82); a rotating shaft (84) is rotatably connected to one side of the U-shaped frame (81) via a bracket; and a plurality of gears (85) are fixedly connected to the outer surface of the rotating shaft (84).

6. The assembled foundation pit support device according to claim 5, characterized in that: The top of the base (1) is slidably connected to a plurality of second tooth plates (86) via a sliding frame (87), and the bottoms of the plurality of second tooth plates (86) are fixed to the top of the reinforcement frame (6), and the plurality of second tooth plates (86) and the plurality of first tooth plates (83) are respectively meshed with the outer surfaces of the plurality of gears (85), and the plurality of second tooth plates (86) and the plurality of first tooth plates (83) are symmetrical.

7. The assembled foundation pit support device according to claim 1, characterized in that: The auxiliary component (5) comprises a plurality of anchor rods (51) penetrating the interior of the base (1), and one end of each of the plurality of anchor rods (51) is fixedly connected to a pull ring (52) and a push block (53).

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