Reinforcing device for foundation pit supporting

Abstract

The utility model relates to the technical field of foundation pit supporting and reinforcing, in particular to a reinforcing device for foundation pit supporting. According to the reinforcing device for foundation pit supporting, a sliding shell, a threaded shell and a spraying cone are matched with one another, and pouring can be conducted according to the gradient and depth of a foundation pit. According to the technical scheme, the device comprises a bottom plate; lifting rods are fixedly connected to the bottom plate in a rectangular array mode, a square frame is fixedly connected to the top ends of the lifting rods, an outer barrel is installed in the square frame, a baffle is fixedly connected to the bottom end of the outer barrel, the round plate is fixedly connected to the inner wall of the outer barrel, a supporting rod is fixedly connected to the round plate, and a sliding shell is slidably connected to the interior of the supporting rod. According to the reinforcing device for foundation pit supporting, the sliding shell, the threaded shell and the spraying cone are matched with one another, and pouring can be conducted according to the gradient and the depth of a foundation pit.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support reinforcement, in particular to a reinforcement device for foundation pit support. Background Art

[0002] A foundation pit is a trench or pit dug at a construction site when laying the foundation or conducting underground construction. Before excavating the foundation pit, it is necessary to check the groundwater level, familiarize yourself with the project overview and safety quality, the depth of the foundation pit, and the surrounding environment to determine the support plan. The quality of the soil around the foundation pit is the key to whether the entire foundation pit will collapse. Since the slope is relatively steep when digging the foundation pit, the foundation pit is prone to collapse, but the existing foundation pit support reinforcement device cannot effectively reinforce the inner side of the foundation pit slope. To solve the above problems, we provide a reinforcement device for foundation pit support. Utility Model Content

[0003] In order to overcome the shortcoming that the existing technology cannot effectively reinforce the soil inside the foundation pit slope, the technical problem to be solved is: to provide a reinforcement device for pouring foundation pit support according to the slope and depth of the foundation pit by cooperating with a sliding shell, a threaded outer shell and a spray cone.

[0004] Technical solution: A reinforcement device for foundation pit support, including a bottom plate, a lifting rod is fixedly connected to a rectangular array on the bottom plate, a square frame is fixedly connected to the top of the lifting rod, an outer barrel is installed in the square frame, and the characteristic is that it also includes a circular plate, a circular plate is fixedly connected to the inner wall of the outer barrel, a support rod is fixedly connected to the circular plate, a sliding shell is slidably connected in the support rod, a triangular iron plate is hinged at one end of the sliding shell, a threaded outer shell is connected to the inner thread of the sliding shell, an inner shell is fixedly connected to the threaded outer shell, a spray cone is slidably connected in the inner shell, the spray cone passes through the inner shell, and a fixed A fixed ring and an elastic part are sleeved on the surface of the spray cone, both ends of the elastic part are connected to the inner shell and the fixed ring, a slide groove is provided at one end of the spray cone, a push rod is slidably connected in the slide groove of the spray cone, a rotating cover is provided at one end of the push rod, a track is provided on the surface of the rotating cover, the push rod is slidably connected to the track in the rotating cover through a fixed column, a small bevel tooth is fixedly connected to one end of the rotating cover, a circular shaft is rotatably connected to one end of the threaded outer shell, a pillar is fixedly connected to the surface of the circular shaft, the pillar is fixedly connected to the circular plate, a large bevel tooth is fixedly connected to one end of the threaded outer shell, a through hole is provided in the center of the large bevel tooth, and the push rod passes through the through hole of the large bevel tooth.

[0005] In one of the embodiments, it also includes a fixed rod, the fixed rod is fixedly connected to the top of the inner wall of the outer barrel, a driving motor is installed in the middle of the fixed rod, the output shaft of the driving motor is fixedly connected to a long rod, the long rod is slidably connected to a connecting column, both ends of the connecting column are fixedly connected to the second bevel gear and the small second bevel gear, the second bevel gear and the small second bevel gear are meshed with the large bevel gear and the small bevel gear when they move, an electric sliding rod is rotatably connected to the surface of the connecting column, one end of the electric sliding rod is slidably connected to a slide rail, the lower end of the slide rail is fixedly connected to a circular plate, the lower end of the long rod is fixedly connected to a long shaft, and the lower end of the long shaft is fixedly connected to a drill bit.

[0006] In one of the embodiments, a telescopic column is further included. The bottom of the small two-beam gear is fixedly connected to the telescopic column, the surface of the long axis is fixedly connected to a circular groove body, and the surface of the circular groove body is provided with a slot corresponding to the telescopic column. When the telescopic column moves, it cooperates with the slot of the circular groove body.

[0007] In one of the embodiments, it also includes a sliding frame, the upper end of the circular plate is fixedly connected to the sliding frame, the inner side of the sliding frame is slidably connected to a sliding block, one end of the sliding block is fixedly connected to a toothed bar, the lower end of the toothed bar is an inclined surface, a through square groove is provided on the surface of the outer barrel, the square groove of the outer barrel is rotatably connected to a roller, the toothed bar and the roller are meshed with each other, a square shell is fixedly connected to the circular plate, the square shell corresponds to the sliding frame, sliding grooves are provided on both sides of the square shell, a protrusion is slidably connected in the sliding groove of the square shell, a spring is connected between the sliding groove and the protrusion of the square shell, a rectangular groove corresponding to the toothed bar is provided on the top of the square shell, and the toothed bar is used to squeeze the protrusion when it moves.

[0008] In one of the embodiments, a bracket is further included. The upper end of the circular plate is fixedly connected to the bracket. A straight square groove is provided on the surface of the sliding shell. The bracket and the straight square groove provided on the surface of the sliding shell are slidingly connected. A water pump is installed on the upper end of the circular plate. A telescopic pipe is connected to the water pump. A rotary joint is installed on the rotating cover. The other end of the telescopic pipe is connected to the rotary joint and passes through the push rod and the spray cone. A plurality of through holes are provided inside the spray cone for grouting of the telescopic pipe.

[0009] In one of the embodiments, it also includes a hollow barrel, the bottom of the bottom plate is fixedly connected to the hollow barrel, the lower end surface of the hollow barrel is provided with a plurality of through holes, the middle part of the hollow barrel is slidably connected to an inclined cone, the upper surface of the inclined cone is equipped with a plurality of buckles, the lower surface of the inclined cone is an inclined surface, a plurality of spurs are slidably connected to the lower surface of the inclined cone, the upper end of the spurs is provided with grooves, when the spurs move, the grooves cooperate with the buckles and limit the spurs, the upper end of the inclined cone is fixedly connected to a press seat, the lower end of the inclined cone is fixedly connected to an elastic column, and the lower end of the elastic column is fixedly connected to a base.

[0010] The utility model has the following advantages: 1. According to the utility model, a reinforcement device for foundation pit support is provided, which cooperates with each other through a sliding shell, a threaded outer shell and a spray cone, and can be poured according to the slope and depth of the foundation pit, thereby changing the problem that the existing base device cannot well realize the function of comprehensive reinforcement of foundation pit support.

[0011] 2. The utility model is provided with a gear set to realize the working efficiency of the sliding shell and the spray cone, thereby improving the practicability of the device.

[0012] 3. A square groove is opened on the surface of the outer barrel, and there is a roller in the square groove. The roller is connected to a toothed bar when it rotates. The rotation of the roller drives the toothed bar to descend or rise, thereby reinforcing and supporting the inner side of the foundation pit slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 A schematic diagram of the internal structure of the utility model;

[0015] Figure 3 A schematic cross-sectional view of a spray cone of the utility model;

[0016] Figure 4 A schematic diagram of the rotary joint structure of the utility model;

[0017] Figure 5 A schematic diagram of the telescopic tube structure of the utility model;

[0018] Figure 6 A schematic diagram of the structure of the sliding frame of the utility model;

[0019] Figure 7 A schematic diagram of the structure of the protrusion of the utility model;

[0020] Figure 8 A schematic diagram of the hollow barrel structure of the utility model;

[0021] Fig. 9 A schematic diagram of the oblique cone structure of the utility model;

[0022] Fig.10 A schematic diagram of the long rod structure of the utility model;

[0023] Fig.11 A schematic diagram of the circular trough structure of the utility model.

[0024] In the accompanying drawings: 1, bottom plate, 101, lifting rod, 102, square frame, 2, outer barrel, 3, round plate, 301, support rod, 4, sliding shell, 401, triangular iron plate, 5, threaded shell, 501, large bevel gear, 502, second bevel gear, 503, connecting column, 504, electric slide rod, 505, slide rail, 6, inner shell, 601, elastic member, 7, spray cone, 701, fixing ring, 8, push rod, 801, rotating cover, 802, small bevel gear, 803, small second bevel gear, 804, telescopic column, 805, circular trough body, 9, fixing rod, 901, driving motor, 902, small bevel gear, 903, small second bevel gear, 904, telescopic column, 905, circular trough body, 906, fixing rod, 907, driving motor, 908, 02. long rod, 903. long shaft, 904. drill bit, 10. sliding frame, 1001. slider, 1002. toothed bar, 1003. roller, 1004. square shell, 1005. bump, 1006. spring, 1007. square plate, 11. bracket, 1101. square groove, 12. pillar, 1201. round shaft, 13. water pump, 1301. telescopic tube, 1302. swivel joint, 14. hollow barrel, 1401. press seat, 1402. oblique cone, 1403. buckle, 1404. spur, 1405. elastic column, 1406. base. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0026] Example 1

[0027] A reinforcement device for foundation pit support, such as Figure 1-11 As shown, it includes a bottom plate 1, a lifting rod 101 is fixedly connected to a rectangular array on the bottom plate 1, a square frame 102 is fixedly connected to the top of the lifting rod 101, an outer barrel 2 is fixedly installed in the square frame 102, and also includes a circular plate 3, a circular plate 3 is fixedly connected to the middle of the inner wall of the outer barrel 2, a support rod 301 is symmetrically fixedly connected to the circular plate 3, a surface of a sliding shell 4 is slidably connected in the support rod 301, a triangular iron plate 401 is hingedly connected to one end of the sliding shell 4 near the inner wall of the outer barrel 2, a threaded outer shell 5 is threadedly connected to the inner wall of the sliding shell 4, an inner shell 6 is fixedly connected to the inner wall of the threaded outer shell 5, a spray cone 7 is slidably connected to the inner wall of the inner shell 6, the spray cone 7 runs through the inner shell 6, a fixing ring 701 is fixedly connected to the surface of the spray cone 7, and an elastic sleeve is provided on the surface of the spray cone 7 The elastic member 601 has two ends which are connected to the inner shell 6 and the fixed ring 701. A sliding groove is provided at one end of the spray cone 7. A push rod 8 is slidably connected in the sliding groove of the spray cone 7. A rotating cover 801 is provided at one end of the push rod 8. A track is provided on the surface of the rotating cover 801. The push rod 8 is slidably connected to the track in the rotating cover 801 through a fixed column. A small bevel tooth 802 is fixedly connected to the end of the rotating cover 801 away from the push rod 8. A circular shaft 1201 is rotatably connected to one end of the surface of the threaded outer shell 5. A pillar 12 is fixedly connected to the surface of the circular shaft 1201. The pillar 12 is fixedly connected to the circular plate 3. A large bevel tooth 501 is fixedly connected to the end of the threaded outer shell 5 away from the inner wall of the outer barrel 2. A through hole is provided in the center of the large bevel tooth 501. The push rod 8 passes through the through hole of the large bevel tooth 501.

[0028] It also includes a fixed rod 9, which is fixedly connected to the top of the inner wall of the outer barrel 2, and a driving motor 901 is installed in the middle of the fixed rod 9. The output shaft of the driving motor 901 is fixedly connected to a long rod 902, and the long rod 902 is slidably connected to a connecting column 503. Both ends of the connecting column 503 are fixedly connected to the second bevel gear 502 and the small second bevel gear 803. When the second bevel gear 502 and the small second bevel gear 803 move, they are meshed with the large bevel gear 501 and the small bevel gear 802. The surface of the connecting column 503 is rotatably connected to an electric slide rod 504, and the electric slide rod 504 is slidably connected to a slide rail 505 at one end away from the connecting column 503. The lower end of the slide rail 505 is fixedly connected to the circular plate 3, the lower end of the long rod 902 is fixedly connected to a long axis 903, and the lower end of the long axis 903 is fixedly connected to a drill bit 904.

[0029] It also includes a telescopic column 804, the bottom of the small two-bevel gear 803 is fixedly connected to the telescopic column 804, the surface of the long axis 903 is fixedly connected to a circular groove body 805, and the surface of the circular groove body 805 is provided with a slot corresponding to the telescopic column 804. When the telescopic column 804 moves, it cooperates with the slot of the circular groove body 805.

[0030] It also includes a sliding frame 10, the upper end of the circular plate 3 is fixedly connected to the sliding frame 10, the inner side of the sliding frame 10 is slidably connected to a slider 1001, one end of the slider 1001 is fixedly connected to a toothed bar 1002, the lower end of the toothed bar 1002 is an inclined surface, a through square groove is provided on the surface of the outer barrel 2, a roller 1003 is rotatably connected to the square groove of the outer barrel 2, the toothed bar 1002 and the roller 1003 are meshed with each other, a square shell 1004 is fixedly connected to the circular plate 3, the square shell 1004 corresponds to the sliding frame 10, and sliding grooves are provided on both sides of the square shell 1004, a protrusion 1005 is slidably connected in the sliding groove of the square shell 1004, a spring 1006 is connected between the sliding groove of the square shell 1004 and the protrusion 1005, a rectangular groove corresponding to the toothed bar 1002 is provided on the top of the square shell 1004, and the toothed bar 1002 is used to squeeze one side of the protrusion 1005 when it moves.

[0031] It also includes a bracket 11, the upper end of the circular plate 3 is fixedly connected to the bracket 11, the surface of the sliding shell 4 is provided with a straight square groove 1101, the bracket 11 and the surface of the sliding shell 4 are slidingly connected with the straight square groove 1101, the upper end of the circular plate 3 is installed with a water pump 13, the water pump 13 is connected with a telescopic tube 1301, the rotating cover 801 is installed with a rotary joint 1302, the other end of the telescopic tube 1301 is connected with the rotary joint 1302 and passes through the push rod 8 and the spray cone 7, and a plurality of through holes are provided inside the spray cone 7 for grouting of the telescopic tube 1301.

[0032] It also includes a hollow barrel 14, which is fixedly connected to the bottom of the bottom plate 1, and a plurality of through holes are provided on the lower end surface of the hollow barrel 14. An inclined cone 1402 is slidably connected to the middle part of the hollow barrel 14, and a plurality of buckles 1403 are installed on the upper end surface of the inclined cone 1402. The lower end surface of the inclined cone 1402 is an inclined surface, and a plurality of spurs 1404 are slidably connected to the inclined surface of the lower end surface of the inclined cone 1402. A groove is provided at the upper end of the spur 1404, and the groove cooperates with the buckle 1403 and limits the spur 1404 when the spur 1404 moves. A press seat 1401 is fixedly connected to the upper end of the inclined cone 1402, and an elastic column 1405 is fixedly connected to the lower end of the inclined cone 1402, and a base 1406 is fixedly connected to the lower end of the elastic column 1405.

[0033] When preparing to support the foundation pit, move the supporting device to the slope that needs to be supported, and the hollow barrel 14 first contacts the soil surface. By pressing the seat 1401, the inclined cone 1402 slides downward to squeeze the spur 1404. At this time, the spur 1404 will be squeezed and expanded through a number of circular grooves on the hollow barrel 14, and the buckle 1403 on the inclined cone 1402 will be stuck after contacting the groove opened at the upper end of the spur 1404 to limit the position. The elastic column 1405 is affected by the downward force and compressed downward. The spur 1404 is inserted into the soil to fix the entire device to prevent the device from vibrating and falling during operation. At this time, the lifting rod 101 is started, and the lifting rod 101 drives the square frame 102 to descend and penetrate the bottom of the bottom plate 1 and the soil The drill bit 904 is driven by the output shaft of the driving motor 901 to rotate the long rod 902 and the long shaft 903, and the long shaft 903 drives the drill bit 904 to rotate. At the same time, the electric slide bar 504 is started, and the electric slide bar 504 drives the connecting column 503, the second bevel gear 502 and the connecting column 503 to descend along the long rod 902. When the small second bevel gear 803 descends to the bottom of the long rod 902 and the upper surface of the circular groove body 805, the telescopic column 804 contacts the upper end of the circular groove body 805, and the telescopic column 804 cooperates with the groove on the upper surface of the circular groove body 805 to limit the position, and drives the small second bevel gear 803, the connecting column 503 and the second bevel gear 502 to rotate with the output shaft of the driving motor 901. When the small second bevel gear 803 of the long rod rotates, it meshes with the small bevel gear 802 and drives the small bevel gear The tooth 802 rotates, and the second bevel tooth 502 meshes with the large bevel tooth 501 when rotating and drives the large bevel tooth 501 to rotate. The rotation of the large bevel tooth 501 causes the sliding shell 4 to move forward, and the triangular iron plate 401 hinged at one end of the sliding shell 4 close to the soil is inserted into the soil. The bracket 11 slides in the square groove 1101 on the surface of the sliding shell 4, and the small bevel tooth 802 drives the rotating cover 801 to rotate. The rotating cover 801 rotates and squeezes the protruding shaft on the push rod 8 to move along the threaded groove. The push rod 8 pushes the spray cone 7 to move toward the inner wall of the soil. Due to the thrust of the push rod 8, the elastic member 601 is compressed. When the spray cone 7 is inserted into the inner wall of the soil, because the end of the triangular iron plate 401 that contacts the soil is sharper, it will be easier to insert into the soil. The spray cone 7 is connected to the inner side of the triangular iron plate 401. When the spray cone 7 is touched, the triangular iron plate 401 will be expanded by the surface of the spray cone 7, and the triangular iron plate 401 will be inserted into the inner wall of the soil to expand, so as to prevent the spray cone 7 from contacting with the stone and causing damage when encountering the stone. The moving length of the spray cone 7 is greater than the moving length of the sliding shell 4, so as to better fill and fix the inside of the soil. The water pump 13 is started, and the concrete water enters the rotary joint 1302 through the telescopic tube 1301. The telescopic tube 1301 in the rotary joint 1302 will transport the concrete water to the inside of the spray cone 7 through the push rod 8 and the through hole of the spray cone 7, and the concrete water flows into the soil through the through hole at one end of the spray cone 7 close to the soil for solidification. When the device moves downward, the roller 1003 contacts the inner wall of the soil and rolls down. The roller 1003 rotates.The slider 1001 in the sliding frame 10 drives the toothed bar 1002 to move downward, and the inclined surface at the lower end of the toothed bar 1002 contacts and squeezes one side of the protrusion 1005, so that the protrusion 1005 moves toward the inner wall of the soil through the slide groove in the square shell 1004. At this time, the spring 1006 in the square shell 1004 is compressed, and the protrusion 1005 pushes the square plate 1007 to fit the inner wall of the soil to fix the entire device, and the roller 1003 stops rotating. When the device needs to be raised after the pouring is completed, the output shaft of the drive motor 901 is controlled to rotate in the opposite direction, and the telescopic column 804 is stuck in the groove on the upper surface of the circular groove body 805, which will cause the small second bevel gear 803 to drive the upper connecting column 503 and the first The second bevel gear 502 rotates in the opposite direction, and the second bevel gear 502 meshes with the large bevel gear 501 to drive the threaded shell 5 to move in the opposite direction. The threaded shell 5 rotates to drive the sliding shell 4 to move into the device. The sliding shell 4 drives the triangular iron plate 401 to be pulled out from the inner wall of the soil and shrink into the device. The small bevel gear 802 drives the rotating cover 801 to rotate in the opposite direction. The rotating cover 801 rotates and squeezes the protruding shaft on the push rod 8 to move inward along the threaded groove on the rotating cover 801. The elastic member 601 is no longer pushed by the push rod 8. The elastic member 601 expands to make the spray cone 7 shrink inward. The square groove 1101 on the surface of the sliding shell 4 slides and resets with the bracket 11, and the lifting rod 101 is started to drive the square frame 102 to move inward. The whole device moves upward, and during the rising process of the device, the roller 1003 contacts and rotates with the inner wall of the soil. The roller 1003 cooperates with the toothed bar 1002, so that the slider 1001 drives the toothed bar 1002 to move upward in the sliding frame 10, and the inclined surface at the lower end of the toothed bar 1002 is away from the protrusion 1005. The protrusion 1005 is no longer squeezed by the inclined surface at the lower end of the toothed bar 1002, and the springs 1006 in the slide grooves on both sides of the inner wall of the square shell 1004 are no longer squeezed. The tension of the spring 1006 will push the protrusion 1005 to move, and the protrusion 1005 will drive the square plate 1007 to move into the device. When the lifting rod 101 lifts the device to the ground, the drive is closed. The motor 901 controls the electric slide bar 504 to drive the connecting column 503, the second bevel gear 502 and the small second bevel gear 803 to move upward. At this time, the telescopic column 804 is separated from the slot on the circular groove body 805. By manually moving the press seat 1401 upward, the elastic column 1405 is no longer squeezed. The elastic column 1405 drives the inclined cone 1402 to move upward. The spur 1404 will slowly move out of the soil due to the upward friction force of the inclined cone 1402. During the rising process of the inclined cone 1402, the groove at the upper end of the spur 1404 is separated from the buckle 1403, and the spur 1404 returns to the hollow barrel 14 through the through hole on the surface of the hollow barrel 14. The device is no longer firmly fixed to the ground.

[0034] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications, improvements and substitutions can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A reinforcement device for foundation pit support, comprising a bottom plate (1), a lifting rod (101) fixedly connected in a rectangular array on the bottom plate (1), a square frame (102) fixedly connected to the top of the lifting rod (101), an outer barrel (2) installed in the square frame (102), characterized in that: The invention also comprises a circular plate (3), the inner wall of the outer barrel (2) is fixedly connected with the circular plate (3), a support rod (301) is fixedly connected to the circular plate (3), a sliding shell (4) is slidably connected inside the support rod (301), a triangular iron plate (401) is hingedly connected to one end of the sliding shell (4), a threaded outer shell (5) is internally threadedly connected to the sliding shell (4), an inner shell (6) is fixedly connected inside the threaded outer shell (5), a spray cone (7) is slidably connected inside the inner shell (6), the spray cone (7) penetrates the inner shell (6), a fixing ring (701) is fixedly connected to the surface of the spray cone (7), an elastic member (601) is sleeved on the surface of the spray cone (7), both ends of the elastic member (601) are connected to the inner shell (6) and the fixing ring (701), and the spray cone (7) is slidably connected to the inner shell (6). A sliding groove is provided at one end of the spray cone (7), a push rod (8) is slidably connected in the sliding groove of the spray cone (7), a rotating cover (801) is provided at one end of the push rod (8), a track is provided on the surface of the rotating cover (801), the push rod (8) is slidably connected to the track in the rotating cover (801) through a fixed column, a small bevel gear (802) is fixedly connected to one end of the rotating cover (801), a circular shaft (1201) is rotatably connected to one end of the threaded shell (5), a support (12) is fixedly connected to the surface of the circular shaft (1201), the support (12) is fixedly connected to the circular plate (3), a large bevel gear (501) is fixedly connected to one end of the threaded shell (5), a through hole is provided in the center of the large bevel gear (501), and the push rod (8) passes through the through hole of the large bevel gear (501).

2. A reinforcement device for foundation pit support according to claim 1, characterized in that: The outer barrel (2) further comprises a fixing rod (9), the fixing rod (9) being fixedly connected to the top of the inner wall of the outer barrel (2), a driving motor (901) being installed in the middle of the fixing rod (9), a long rod (902) being fixedly connected to the output shaft of the driving motor (901), a connecting column (503) being slidably connected to the long rod (902), both ends of the connecting column (503) being fixedly connected to the second bevel gear (502) and the small second bevel gear (803), the second bevel gear (502) and the small second bevel gear (803) being fixedly connected to the second bevel gear (502). The two bevel teeth (803) are meshed with the large bevel teeth (501) and the small bevel teeth (802) when they are moving. The surface of the connecting column (503) is rotatably connected with an electric slide rod (504). One end of the electric slide rod (504) is slidably connected with a slide rail (505). The lower end of the slide rail (505) is fixedly connected to the circular plate (3). The lower end of the long rod (902) is fixedly connected with a long shaft (903), and the lower end of the long shaft (903) is fixedly connected with a drill bit (904).

3. A reinforcement device for foundation pit support according to claim 2, characterized in that: The invention also comprises a telescopic column (804), the bottom of the small two-bevel gear (803) is fixedly connected with the telescopic column (804), the surface of the long axis (903) is fixedly connected with a circular groove body (805), the surface of the circular groove body (805) is provided with a slot corresponding to the telescopic column (804), and the telescopic column (804) cooperates with the slot of the circular groove body (805) when the telescopic column (804) moves.

4. A reinforcement device for foundation pit support according to claim 1, characterized in that: The invention also comprises a sliding frame (10), the upper end of the circular plate (3) is fixedly connected to the sliding frame (10), the inner side of the sliding frame (10) is slidably connected to a slider (1001), one end of the slider (1001) is fixedly connected to a toothed bar (1002), the lower end of the toothed bar (1002) is an inclined surface, a through-type square groove is opened on the surface of the outer barrel (2), the square groove of the outer barrel (2) is rotatably connected to a roller (1003), the toothed bar (1002) and the roller (1003) are meshed with each other, a square outer groove is fixedly connected to the circular plate (3), and a square outer groove is fixedly connected to the outer barrel (2). The square shell (1004) corresponds to the sliding frame (10), and the square shell (1004) is provided with a slide groove on both sides, and a protrusion (1005) is slidably connected in the slide groove of the square shell (1004), and a spring (1006) is connected between the slide groove of the square shell (1004) and the protrusion (1005). A rectangular groove corresponding to the toothed bar (1002) is provided on the top of the square shell (1004), and the toothed bar (1002) is used to squeeze the protrusion (1005) when it moves.

5. A reinforcement device for foundation pit support according to claim 4, characterized in that: The invention also comprises a bracket (11), the upper end of the circular plate (3) is fixedly connected with the bracket (11), the surface of the sliding shell (4) is provided with a square groove (1101), the bracket (11) and the surface of the sliding shell (4) are slidably connected, the upper end of the circular plate (3) is provided with a water pump (13), the water pump (13) is connected with a telescopic pipe (1301), the rotating cover (801) is provided with a rotary joint (1302), the other end of the telescopic pipe (1301) is connected with the rotary joint (1302) and passes through the push rod (8) and the spray cone (7), and a plurality of through holes are provided inside the spray cone (7) for grouting the telescopic pipe (1301).

6. A reinforcement device for foundation pit support according to claim 1, characterized in that: The invention also comprises a hollow barrel (14), wherein the bottom of the bottom plate (1) is fixedly connected with the hollow barrel (14), the lower end surface of the hollow barrel (14) is provided with a plurality of through holes, the middle part of the hollow barrel (14) is slidably connected with an inclined cone (1402), the upper surface of the inclined cone (1402) is provided with a plurality of buckles (1403), the lower surface of the inclined cone (1402) is an inclined surface, the lower surface of the inclined cone (1402) is slidably connected with a plurality of thorns (1404), the upper end of the thorn (1404) is provided with a groove, when the thorn (1404) moves, the groove cooperates with the buckle (1403) and restricts the thorn (1404), the upper end of the inclined cone (1402) is fixedly connected with a press seat (1401), the lower end of the inclined cone (1402) is fixedly connected with an elastic column (1405), and the lower end of the elastic column (1405) is fixedly connected with a base (1406).

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