A foundation pit support device for geotechnical engineering and an operation method thereof

Abstract

The present invention belongs to the field of geotechnical engineering, and specifically, is a foundation pit supporting device for geotechnical engineering and an operating method thereof, comprising a base, an inner wall of the base being rotatably connected with a bidirectional screw rod, an outer wall of the bidirectional screw rod being connected with two connecting blocks via a screw nut pair, the two connecting blocks being symmetrically arranged and both being slidably connected with the base, and the tops of the two connecting blocks being fixedly connected with a supporting plate; the present invention provides a foundation pit supporting device for geotechnical engineering and an operating method thereof, wherein a sponge is arranged to fit the inner wall of the foundation pit, and when groundwater soaks the inner wall of the foundation pit, the groundwater on the inner wall of the foundation pit can be sucked away by the sponge, so as to prevent water and soil loss caused by water seepage on the inner wall of the foundation pit and affect the safety of the foundation pit, and the rotation of the extrusion block is controlled by a first motor, so that the sponge can be intermittently compressed to remove water, and after the support plate is retracted, the rotating extrusion block can cause the sponge to vibrate intermittently, so as to shake off the mud stained on the sponge for the next water absorption use.

Description

Technical Field

[0001] The invention belongs to the technical field of geotechnical engineering, in particular to a foundation pit supporting device for geotechnical engineering and an operating method thereof. Background Art

[0002] Geotechnical engineering is the study of rock and soil engineering problems, including foundations, slopes and underground engineering. Geotechnical engineers study the data from soil and rock samples collected from the construction site, and then calculate the structure required for the building on the site. When workers take samples of soil and rock from the foundation pit, they need to crawl to the bottom of the pit, so support equipment will be installed on the side of the pit to prevent the pit from collapsing and ensure the safety of the workers.

[0003] After searching, a Chinese patent discloses a foundation pit support equipment for engineering construction (authorization announcement number CN216339575U). The patent technology includes a bottom plate and two support plates. The bottom plate is provided with a driving mechanism, which includes a screw, two straight plates and two threaded blocks. The two straight plates are fixedly connected to the bottom plate. The screw is rotatably arranged between the two straight plates. One end of the screw passes through the straight plate. The two threaded blocks are threadedly connected to the screw. The threaded rotation directions of the two threaded blocks are opposite. The threaded blocks are rotatably connected with an adjustment rod. The top of the adjustment rod is rotatably connected with a connecting plate. The connecting plates are respectively fixedly connected with the corresponding support plates. A row of horizontal plates are respectively fixedly connected to the two support plates. A slide plate is provided between the horizontal plates. The two ends of the slide plate are respectively inserted into the horizontal plates and slidably connected with the horizontal plates. The two support plates are fixedly connected with side plates on the side away from each other. A row of first latches are fixedly connected to the side plates. The patent technology solves the problems that the foundation pit support equipment of the prior art cannot be adjusted according to the use environment.

[0004] However, after the foundation pit has been excavated for a period of time, water will naturally seep into the foundation pit due to the head pressure of groundwater. The existing technology can only support and protect the inner wall of the foundation pit, but cannot treat the groundwater that has seeped into the inner wall of the foundation pit. If the groundwater is allowed to soak the inner wall of the foundation pit, the inner wall of the foundation pit will easily collapse, and it is not convenient to drain the connection between the bottom plate pin and the bottom of the foundation pit. If water accumulates at the bottom of the foundation pit, the soil will become loose, resulting in the inability to effectively fix the bottom plate pin to the bottom of the foundation pit, affecting the supporting effect of the bottom plate. For this reason, the present invention provides a foundation pit support equipment for geotechnical engineering and an operating method thereof. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art and solve the problem that groundwater that has penetrated into the inner wall of the foundation pit cannot be treated, the inner wall of the foundation pit is very likely to collapse if the groundwater is allowed to soak the inner wall of the foundation pit, and it is not convenient to drain the connection between the bottom plate pin and the bottom of the foundation pit. If water accumulates at the bottom of the foundation pit, the soil will become loose, resulting in the inability to effectively fix the bottom plate pin to the bottom of the foundation pit, affecting the bottom plate support effect. The present invention proposes a foundation pit support equipment for geotechnical engineering and an operating method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a foundation pit supporting equipment for geotechnical engineering and its operation method described in the present invention include a base, the inner wall of the base is rotatably connected with a bidirectional screw rod, the outer wall of the bidirectional screw rod is connected to two connecting blocks through a screw nut pair, the two connecting blocks are symmetrically arranged and are slidably connected to the base, the tops of the two connecting blocks are fixedly connected with a support plate, the tops of the two support plates are fixedly connected with a support plate, the outer wall of the bidirectional screw rod is fixedly connected with a first bevel gear, the top of the base is fixedly connected with a second motor, the output end of the second motor extends to the interior of the base and is fixedly connected with a second bevel gear, the second bevel gear is meshed with the first bevel gear, the top of the base is symmetrically fixedly connected with two support pads, the two support pads are respectively slidably connected to the two support plates, and the two ends of the bidirectional screw rod are respectively rotatably connected to the two support pads, and the inner wall of the base is symmetrically slidably connected with two plug rods.

[0007] Preferably, a plurality of mounting grooves are equidistantly formed on the outer wall of the support plate, a plurality of extrusion plates are equidistantly and slidably connected to the inner wall of the support plate, the extrusion plates fit the inner walls of the mounting grooves, a connecting plate is fixedly connected between each two adjacent extrusion plates, a movable cavity for the connecting plates to move is formed inside the support plate, a sponge is fixedly connected to one side of the extrusion plate, and the sponge extends to the inside of the mounting groove.

[0008] Preferably, the outer wall of the support plate is fixedly connected to a first motor, the output end of the first motor extends to the interior of the support plate and is fixedly connected to a turntable, the outer wall of the turntable is symmetrically fixedly connected to two extrusion blocks, one side outer wall of the two extrusion blocks is set as an inclined surface, the connecting plate is fixedly connected to a top block on the side close to the turntable, the top and bottom of the top block are set as inclined surfaces, a plurality of first drainage grooves are equidistantly provided on the inner wall of the extrusion plate, the bottoms of the first drainage grooves are set as inclined surfaces, and the outer wall of the support plate is provided with a second drainage groove.

[0009] Preferably, the inner wall of the support plate is symmetrically fixedly connected with two first sliding shafts, the outer walls of the two first sliding shafts are slidably connected with a first slider, the two first sliders are fixedly connected to the extrusion plate, the outer walls of the two first sliding shafts are sleeved with a first spring, one end of the first spring is fixedly connected to the support plate, and the other end of the first spring is fixedly connected to the first slider.

[0010] Preferably, the inner wall of the insertion rod is symmetrically and slidingly connected to the two extension rods, the bottoms of the two extension rods are set to be inclined, the inner wall of the insertion rod is rotatably connected to a threaded rod, the top of the threaded rod is fixedly connected to a knob, the outer wall of the threaded rod is threadedly connected to a sleeve, the sleeve is slidably connected to the insertion rod, and the bottom of the sleeve is symmetrically and rotatably connected to two connecting shafts, the two connecting shafts are rotatably connected to the two extension rods respectively, the inside of the insertion rod is symmetrically and fixedly connected to two second sliding shafts, the outer walls of the two second sliding shafts are slidably connected to a second slider, the two second sliders are respectively fixedly connected to the two extension rods, and the outer walls of the two second sliding shafts are sleeved with a second spring, one end of the second spring is fixedly connected to the insertion rod, and the other end of the second spring is fixedly connected to the second slider.

[0011] Preferably, four first water inlets are symmetrically opened at the bottom of the insertion rod, four third drainage grooves are symmetrically opened on the outer wall of the insertion rod, four first connecting grooves are symmetrically opened inside the insertion rod, the bottom of the first connecting groove is connected to the first water inlet, the top of the first connecting groove is connected to the third drainage groove, and four groups of second water inlets are opened on the outer wall of the insertion rod, and the four groups of second water inlets are respectively connected to the four first connecting grooves.

[0012] Preferably, two annular grooves are symmetrically provided on the top of the base, a guide plate is fixedly connected to the outer wall of the insertion rod and is located below the third drainage groove, the guide plate is configured to be truncated cone-shaped, and the guide plate is located above the annular groove, two water storage cavities are symmetrically provided inside the base, a second connecting groove is provided inside the base and is located between the water storage cavity and the annular groove, and two water pumping ports are symmetrically provided on the top of the base, and the two water pumping ports are respectively connected to the two water storage cavities.

[0013] Preferably, two pressure relief grooves are symmetrically provided at the bottom of the base, and the tops of the two pressure relief grooves are both arranged as inclined surfaces. A third water inlet is provided inside the base and between the pressure relief groove and the water storage chamber, and a filter plate is fixedly connected to the inner wall of the third water inlet.

[0014] Preferably, four side panels are equidistantly and fixedly connected to the outer wall of the insertion rod, and the bottoms of the four side panels are all arranged as inclined surfaces.

[0015] An operating method of a foundation pit support device for geotechnical engineering, the operating method is applicable to the above-mentioned foundation pit support device for geotechnical engineering, and the steps of the method are as follows:

[0016] S1: Place the base in the foundation pit, insert the two insertion rods into the bottom of the foundation pit by hammering, turn the knob to control the two extension rods to be inserted horizontally into the bottom of the foundation pit, start the second motor to control the two support plates to open, and support the inner wall of the foundation pit;

[0017] S2: a sponge is arranged in the supporting plate to absorb water from the inner wall of the foundation pit, and the first motor is started to drive the extrusion block to rotate, and the sponge is controlled to intermittently compress and drain water;

[0018] S3: Use a pump to insert into the pumping port to pump out the groundwater in the water storage chamber.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention discloses a foundation pit supporting device for geotechnical engineering and an operating method thereof. The sponge is arranged to fit the inner wall of the foundation pit. When the groundwater soaks the inner wall of the foundation pit, the sponge can absorb the groundwater on the inner wall of the foundation pit to prevent water seepage from the inner wall of the foundation pit and soil erosion, thereby affecting the safety of the foundation pit. The first motor controls the rotation of the extrusion block to intermittently compress and remove water from the sponge. After the support plate is retracted, the rotating extrusion block can cause the sponge to vibrate intermittently, thereby shaking off the mud stained on the sponge for the next use to absorb water.

[0021] 2. The present invention provides a foundation pit supporting equipment for geotechnical engineering and an operating method thereof. Through the first water inlet, when the groundwater at the bottom of the foundation pit penetrates toward the inserted rod, the groundwater can flow along the first water inlet and the first connecting groove, and the groundwater is discharged from the third drainage groove, thereby preventing excessive water accumulation at the connection between the inserted rod and the bottom of the foundation pit, causing the soil to become loose and affecting the firmness of the connection between the inserted rod and the bottom of the foundation pit.

[0022] 3. The present invention describes a foundation pit support equipment for geotechnical engineering and an operation method thereof. Through the provided pressure relief trough, when the groundwater at the bottom of the foundation pit gushes upward, it can flow into the water storage chamber along the inclined surface at the top of the pressure relief trough, thereby preventing the base from moving upward due to excessive water pressure at the bottom of the base, thereby affecting the stability of the support.

[0023] 4. The invention discloses a foundation pit support device for geotechnical engineering and an operation method thereof, which increases the friction between the extension rod and the bottom of the foundation pit by inserting the extension rod transversely into the bottom of the foundation pit, thereby preventing groundwater in the foundation pit from gushing upward and causing excessive pressure at the bottom of the base to move upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the filter plate of the present invention;

[0028] Figure 4 It is an exploded view of the supporting plate, the extrusion plate and the sponge wiping part of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the plug rod and the second water inlet of the present invention;

[0030] Figure 6 The present invention Figure 2 The enlarged view of point A in the middle;

[0031] Figure 7 The present invention Figure 3 The enlarged view of point B in the middle;

[0032] Figure 8 The present invention Figure 3 Enlarged view of point C in the middle;

[0033] Fig. 9 The present invention Figure 5 The enlarged view of point D in the middle;

[0034] In the figure: 1, base; 2, two-way screw rod; 3, connecting block; 4, support plate; 5, support plate; 6, support pad; 7, mounting groove; 8, sponge; 9, extrusion plate; 10, connecting plate; 11, first drainage groove; 12, second drainage groove; 13, first sliding shaft; 14, first slider; 15, first spring; 16, first motor; 17, turntable; 18, extrusion block; 19, top block; 20, plug rod; 21, threaded rod; 22, sleeve; 23, knob; 24, Extension rod; 25, connecting shaft; 26, second sliding shaft; 27, second spring; 28, second sliding block; 29, first water inlet; 30, side plate; 31, first bevel gear; 32, first connecting groove; 33, third drainage groove; 34, second water inlet; 35, guide plate; 36, annular groove; 37, water storage chamber; 38, water extraction port; 39, second connecting groove; 40, third water inlet; 41, filter plate; 42, pressure relief groove; 43, second motor; 44, second bevel gear. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figures 1 to 9 As shown, the present invention provides a technical solution, a foundation pit supporting equipment for geotechnical engineering, comprising a base 1, the inner wall of the base 1 is rotatably connected with a bidirectional screw rod 2, the outer wall of the bidirectional screw rod 2 is connected with two connecting blocks 3 through a screw nut pair, the two connecting blocks 3 are symmetrically arranged and are both slidably connected to the base 1, the tops of the two connecting blocks 3 are fixedly connected with a support plate 4, the tops of the two support plates 4 are fixedly connected with a supporting plate 5, the outer wall of the bidirectional screw rod 2 is fixedly connected with a first bevel gear 31, the top of the base 1 is fixedly connected with a second motor 43, the output end of the second motor 43 extends to the interior of the base 1 and is fixedly connected with a second bevel gear 44, the second bevel gear 44 is meshed with the first bevel gear 31, the top of the base 1 is symmetrically fixedly connected with two supporting pads 6, the two supporting pads 6 are respectively slidably connected to the two supporting plates 4, and the two ends of the bidirectional screw rod 2 are respectively rotatably connected to the two supporting pads 6, and the inner wall of the base 1 is symmetrically slidably connected with two plug rods 20.

[0037] Through the above technical solution, the base 1 is placed in the foundation pit, and the two insertion rods 20 are inserted into the bottom of the foundation pit by hammering. The friction between the base 1 and the bottom of the foundation pit is increased by the two insertion rods 20 to prevent the base 1 from sliding in the bottom of the foundation pit. The second motor 43 is started to drive the second bevel gear 44 to rotate, so that the first bevel gear 31 rotates, and the bidirectional screw rod 2 is driven to rotate, so that the two connecting blocks 3 move away from each other, and the two support plates 4 move away from each other, so that the two support plates 5 are opened, and the inner wall of the foundation pit is supported to prevent the inner wall of the foundation pit from collapsing.

[0038] Specifically, a plurality of mounting grooves 7 are equidistantly provided on the outer wall of the support plate 5, a plurality of extrusion plates 9 are slidably connected to the inner wall of the support plate 5 at equal intervals, the extrusion plates 9 fit the inner wall of the mounting groove 7, a connecting plate 10 is fixedly connected between each two adjacent extrusion plates 9, a movable cavity for the connecting plate 10 to move is provided inside the support plate 5, a sponge 8 is fixedly connected to one side of the extrusion plate 9, and the sponge 8 extends to the inside of the mounting groove 7.

[0039] Through the above technical solution, the sponge 8 is arranged to fit the inner wall of the foundation pit. When the groundwater soaks the inner wall of the foundation pit, the sponge 8 can absorb the groundwater on the inner wall of the foundation pit, preventing water seepage from the inner wall of the foundation pit from causing soil erosion and affecting the safety of the foundation pit.

[0040] Specifically, the outer wall of the support plate 5 is fixedly connected to the first motor 16, the output end of the first motor 16 extends to the inside of the support plate 5 and is fixedly connected to the turntable 17, the outer wall of the turntable 17 is symmetrically fixedly connected to two extrusion blocks 18, one side of the outer wall of the two extrusion blocks 18 is set as an inclined surface, the side of the connecting plate 10 close to the turntable 17 is fixedly connected to a top block 19, the top and bottom of the top block 19 are set as inclined surfaces, the inner wall of the extrusion plate 9 is equidistantly provided with a plurality of first drainage grooves 11, the bottoms of the first drainage grooves 11 are all set as inclined surfaces, and the outer wall of the support plate 5 is provided with a second drainage groove 12.

[0041] Through the above technical scheme, after the supporting plate 5 and the sponge 8 are attached to the inner wall of the foundation pit, the first motor 16 is started to drive the turntable 17 to rotate, so that the two extrusion blocks 18 rotate. When the extrusion block 18 rotates to a position close to the top block 19, the top block 19 is pushed to move toward the inner wall of the foundation pit under the extrusion of the inclined surface of the extrusion block 18, and the connecting plate 10 is driven to move toward the inner wall of the foundation pit, so that the extrusion plate 9 is inserted into the mounting groove 7. Under the mutual extrusion of the extrusion plate 9 and the inner wall of the foundation pit, the sponge 8 is flattened, and the groundwater in the sponge 8 flows out through the first drainage groove 11, and the outflowing groundwater can be discharged from the supporting plate 5 along the second drainage groove 12. When the extrusion block 18 rotates to a position away from the top block 19, the sponge 8 expands and returns to its original state, and continues to absorb water from the inner wall of the foundation pit. Thus, the first motor 16 can be started to make the sponge 8 intermittently compressed and dewatered, effectively preventing the inner wall of the foundation pit from being soaked by groundwater.

[0042] Specifically, the inner wall of the support plate 5 is symmetrically fixedly connected with two first sliding shafts 13, the outer walls of the two first sliding shafts 13 are slidably connected with first sliders 14, the two first sliders 14 are fixedly connected to the extrusion plate 9, the outer walls of the two first sliding shafts 13 are sleeved with first springs 15, one end of the first spring 15 is fixedly connected to the support plate 5, and the other end of the first spring 15 is fixedly connected to the first slider 14.

[0043] Through the above technical scheme, after the foundation pit protection is completed and the supporting plate 5 is retracted, the first motor 16 is started to drive the extrusion block 18 to rotate, push the extrusion plate 9 to move, and make the sponge 8 extend out of the installation slot 7. When the extrusion plate 9 moves, it drives the two first sliders 14 to move, and compresses the two first springs 15. When the extrusion block 18 rotates to a position away from the top block 19, under the action of the two first springs 15, the extrusion plate 9 is driven to quickly reset, so that the sponge 8 is quickly reset. When the first slider 14 moves to the end of the first sliding shaft 13, it stops moving instantly, so that the extrusion plate 9 stops moving instantly, and drives the sponge 8 to vibrate. In this way, starting the first motor 16 after retracting the supporting plate 5 can drive the sponge 8 to vibrate intermittently, which is convenient for shaking off the mud stained on the sponge 8 so that it can be used for water absorption next time.

[0044] Specifically, the inner wall of the insertion rod 20 is symmetrically and slidably connected to two extension rods 24, and the bottoms of the two extension rods 24 are both set to be inclined surfaces. The inner wall of the insertion rod 20 is rotatably connected to a threaded rod 21, and the top of the threaded rod 21 is fixedly connected to a knob 23. The outer wall of the threaded rod 21 is threadedly connected to a sleeve 22, and the sleeve 22 is slidably connected to the insertion rod 20. The bottom of the sleeve 22 is symmetrically and rotatably connected to two connecting shafts 25, and the two connecting shafts 25 are rotatably connected to the two extension rods 24 respectively. The inside of the insertion rod 20 is symmetrically and fixedly connected to two second sliding shafts 26, and the outer walls of the two second sliding shafts 26 are both slidably connected to second sliders 28, and the two second sliders 28 are respectively fixedly connected to the two extension rods 24. The outer walls of the two second sliding shafts 26 are both sleeved with second springs 27, one end of the second spring 27 is fixedly connected to the insertion rod 20, and the other end of the second spring 27 is fixedly connected to the second slider 28.

[0045] Through the above technical solution, after the insertion rod 20 is inserted into the bottom of the foundation pit, the knob 23 is rotated to drive the threaded rod 21 to rotate, so that the sleeve 22 moves downward, and the two connecting shafts 25 are set to push the two extension rods 24 away from each other, so that the two extension rods 24 are horizontally inserted into the bottom of the foundation pit. The two extension rods 24 can increase the friction between the insertion rod 20 and the bottom of the foundation pit, thereby preventing the groundwater in the foundation pit from gushing upward and causing excessive pressure at the bottom of the base 1 to move upward.

[0046] Specifically, four first water inlets 29 are symmetrically opened at the bottom of the insertion rod 20, four third drainage grooves 33 are symmetrically opened on the outer wall of the insertion rod 20, four first connecting grooves 32 are symmetrically opened inside the insertion rod 20, the bottom of the first connecting groove 32 is connected to the first water inlet 29, the top of the first connecting groove 32 is connected to the third drainage groove 33, and four groups of second water inlets 34 are opened on the outer wall of the insertion rod 20, and the four groups of second water inlets 34 are respectively connected to the four first connecting grooves 32.

[0047] Through the above technical scheme, when the groundwater at the bottom of the foundation pit penetrates toward the insertion rod 20, the first water inlet 29 can be used to allow the groundwater to flow along the first water inlet 29 and the first connecting groove 32, and the groundwater can be discharged from the third drainage groove 33, thereby preventing excessive water accumulation at the connection between the insertion rod 20 and the bottom of the foundation pit, thereby causing the soil to become loose and affecting the firmness of the connection between the insertion rod 20 and the bottom of the foundation pit. Through the four groups of second water inlets 34, the water that has penetrated into the side of the insertion rod 20 can enter the first connecting groove 32.

[0048] Specifically, two annular grooves 36 are symmetrically provided on the top of the base 1, a guide plate 35 is fixedly connected to the outer wall of the insertion rod 20 and is located below the third drainage groove 33, the guide plate 35 is configured to be truncated cone-shaped, and the guide plate 35 is located above the annular groove 36, two water storage chambers 37 are symmetrically provided inside the base 1, a second connecting groove 39 is provided inside the base 1 and is located between the water storage chamber 37 and the annular groove 36, and two water pumping ports 38 are symmetrically provided on the top of the base 1, and the two water pumping ports 38 are respectively connected to the two water storage chambers 37.

[0049] Through the above technical solution, the groundwater discharged from the third drainage groove 33 slides along the inclined surface of the guide plate 35 into the annular groove 36, and enters the water storage chamber 37 along the second connecting groove 39 for storage, preventing the groundwater discharged from the third drainage groove 33 from soaking the insertion rod 20 again. The groundwater in the water storage chamber 37 can be extracted through the provided water pumping port 38.

[0050] Specifically, two pressure relief grooves 42 are symmetrically provided at the bottom of the base 1, and the tops of the two pressure relief grooves 42 are both set as inclined surfaces. A third water inlet 40 is provided inside the base 1 and between the pressure relief groove 42 and the water storage chamber 37, and a filter plate 41 is fixedly connected to the inner wall of the third water inlet 40.

[0051] Through the above technical solution, when the groundwater at the bottom of the foundation pit gushes upward, it can flow along the slope at the top of the pressure relief groove 42 to the third water inlet 40, and enter the water storage chamber 37 along the third water inlet 40, so as to prevent the water pressure at the bottom of the base 1 from being too high and causing the base 1 to move upward, affecting the stability of the support. The groundwater gushes upward can be filtered through the filter plate 41 that is set.

[0052] Specifically, four side panels 30 are fixedly connected to the outer wall of the insertion rod 20 at equal intervals, and the bottoms of the four side panels 30 are all configured as inclined surfaces.

[0053] Through the above technical solution, after the rod 20 is inserted into the bottom of the foundation pit, it drives the four side plates 30 to be inserted into the bottom of the foundation pit. The four side plates 30 can increase the friction between the rod 20 and the bottom of the foundation pit, preventing the rod 20 from being displaced due to excessive pressure on the support plate 5.

[0054] An operating method of a foundation pit support device for geotechnical engineering, the operating method is applicable to the above-mentioned foundation pit support device for geotechnical engineering, and the steps of the method are as follows:

[0055] S1: Place the base 1 in the foundation pit, insert the two insertion rods 20 into the bottom of the foundation pit by hammering, turn the knob 23 to control the two extension rods 24 to be inserted horizontally into the bottom of the foundation pit, start the second motor 43, control the two support plates 5 to open, and support the inner wall of the foundation pit;

[0056] S2: a sponge 8 is arranged in the supporting plate 5 to absorb water from the inner wall of the foundation pit, and the first motor 16 is started to drive the squeezing block 18 to rotate, and the sponge 8 is controlled to intermittently compress and drain water;

[0057] S3: Use a pump to insert into the water extraction port 38 to extract the groundwater in the water storage chamber 37.

[0058] Working principle: when in use, the base 1 is placed in the foundation pit, and the two plug rods 20 are inserted into the bottom of the foundation pit by hammering. After the plug rod 20 is inserted into the bottom of the foundation pit, the four side plates 30 are driven to insert into the bottom of the foundation pit. The four side plates 30 can increase the friction between the plug rod 20 and the bottom of the foundation pit to prevent the support plate 5 from being displaced by excessive pressure on the plug rod 20. The knob 23 is turned to drive the threaded rod 21 to rotate, so that the sleeve 22 moves downward, and the two connecting shafts 25 are set to push the two extension rods 24 away from each other, so that the two extension rods 24 are inserted into the bottom of the foundation pit horizontally. The friction between the plug rod 20 and the bottom of the foundation pit can be increased by the two extension rods 24 to prevent the groundwater in the foundation pit from gushing upward and causing the bottom pressure of the base 1 to be too large and move upward. The second motor 43 is started to drive the second bevel gear 44 to rotate, so that the first bevel gear 31 is rotated, and the bidirectional screw rod 2 is driven to rotate, so that the two connecting blocks 3 are moved away from each other, and the two support plates 4 are driven away from each other, so that the two support plates 5 are opened, and the foundation pit is pressed. The inner wall is supported to prevent the inner wall of the foundation pit from collapsing. When the groundwater at the bottom of the foundation pit penetrates toward the insertion rod 20, the first water inlet 29 can be used to make the groundwater flow along the first water inlet 29 and the first connecting groove 32, so that the groundwater is discharged from the third drainage groove 33 to prevent the soil from being loosened due to excessive water accumulation at the connection between the insertion rod 20 and the bottom of the foundation pit, thereby affecting the firmness of the connection between the insertion rod 20 and the bottom of the foundation pit. The four sets of second water inlets 34 can be used to make the water that penetrates into the side of the insertion rod 20 enter the first connecting groove 32, and the groundwater discharged from the third drainage groove 33 slides along the inclined surface of the guide plate 35 into the annular groove 36, and enters the water storage along the second connecting groove 39. The groundwater discharged from the third drainage groove 33 is stored in the water storage cavity 37 to prevent the groundwater discharged from the third drainage groove 33 from soaking the insertion rod 20 again. The groundwater in the water storage cavity 37 can be extracted through the provided water pumping port 38. When the groundwater at the bottom of the foundation pit gushes upward, it can flow along the inclined surface at the top of the pressure relief groove 42 to the third water inlet 40, and enter the water storage cavity 37 along the third water inlet 40 to prevent the base 1 from moving upward due to excessive water pressure at the bottom of the base 1, affecting the stability of the support. The groundwater gushing upward can be filtered through the provided filter plate 41. The provided sponge 8 is attached to the inner wall of the foundation pit. When the groundwater soaks the inner wall of the foundation pit, the groundwater on the inner wall of the foundation pit can be sucked away by the sponge 8. , to prevent water seepage from the inner wall of the foundation pit from causing soil erosion and affecting the safety of the foundation pit. After the support plate 5 and the sponge 8 are attached to the inner wall of the foundation pit, the first motor 16 is started to drive the turntable 17 to rotate, so that the two extrusion blocks 18 rotate. When the extrusion block 18 rotates to a position close to the top block 19, under the extrusion of the inclined surface of the extrusion block 18, the top block 19 is pushed to move toward the inner wall of the foundation pit, and the connecting plate 10 is driven to move toward the inner wall of the foundation pit, so that the extrusion plate 9 is inserted into the installation groove 7. Under the mutual extrusion of the extrusion plate 9 and the inner wall of the foundation pit, the sponge 8 is flattened, and the groundwater in the sponge 8 flows out through the first drainage groove 11. The outflowing groundwater can be discharged from the support plate 5 along the second drainage groove 12.When the squeezing block 18 rotates to a position away from the top block 19, the sponge 8 expands and returns to its original state, and continues to absorb water from the inner wall of the foundation pit. In this reciprocating manner, after the first motor 16 is started, the sponge 8 can be intermittently compressed to remove water, effectively preventing the inner wall of the foundation pit from being soaked by groundwater. After the foundation pit protection is completed and the supporting plate 5 is retracted, the first motor 16 is started to drive the squeezing block 18 to rotate, and the squeezing plate 9 is pushed to move, so that the sponge 8 extends out of the mounting slot 7. While the squeezing plate 9 moves, the two first sliders 14 are driven to move, and the two first springs 15 are pressed. When the squeezing block 18 rotates to a position away from the top block 19, under the action of the two first springs 15, the squeezing plate 9 is driven to quickly reset, so that the sponge 8 is quickly reset. When the first slider 14 moves to the end of the first sliding shaft 13, it stops moving instantly, so that the squeezing plate 9 stops moving instantly, and the sponge 8 is driven to vibrate. In this reciprocating manner, after the supporting plate 5 is retracted, the first motor 16 is started to drive the sponge 8 to vibrate intermittently, so as to shake off the soil stained on the sponge 8 for the next water absorption use.

[0059] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A foundation pit support equipment for geotechnical engineering, characterized in that: The invention comprises a base (1), wherein the inner wall of the base (1) is rotatably connected to a bidirectional screw rod (2), the outer wall of the bidirectional screw rod (2) is connected to two connecting blocks (3) via a screw nut pair, the two connecting blocks (3) are symmetrically arranged and are both slidably connected to the base (1), the tops of the two connecting blocks (3) are fixedly connected to a support plate (4), the tops of the two support plates (4) are fixedly connected to a supporting plate (5), the outer wall of the bidirectional screw rod (2) is fixedly connected to a first bevel gear (31), and the top of the base (1) is fixedly connected to A second motor (43) is provided, the output end of the second motor (43) extends to the interior of the base (1) and is fixedly connected to a second bevel gear (44), the second bevel gear (44) is meshingly connected to the first bevel gear (31), two support pads (6) are symmetrically fixedly connected to the top of the base (1), the two support pads (6) are respectively slidably connected to the two support plates (4), and the two ends of the bidirectional screw rod (2) are respectively rotatably connected to the two support pads (6), and the inner wall of the base (1) is symmetrically slidably connected to two plug rods (20); The outer wall of the support plate (5) is provided with a plurality of mounting grooves (7) at equal intervals, the inner wall of the support plate (5) is slidably connected with a plurality of extrusion plates (9) at equal intervals, the extrusion plates (9) fit the inner wall of the mounting groove (7), a connecting plate (10) is fixedly connected between each two adjacent extrusion plates (9), a movable cavity for the connecting plate (10) to move is provided inside the support plate (5), a sponge (8) is fixedly connected to one side of the extrusion plate (9), and the sponge (8) extends to the inside of the mounting groove (7); The outer wall of the support plate (5) is fixedly connected to a first motor (16), the output end of the first motor (16) extends to the inside of the support plate (5) and is fixedly connected to a turntable (17), the outer wall of the turntable (17) is symmetrically fixedly connected to two extrusion blocks (18), one side of the outer wall of the two extrusion blocks (18) is set as an inclined surface, the side of the connection plate (10) close to the turntable (17) is fixedly connected to a top block (19), the top and bottom of the top block (19) are set as inclined surfaces, the inner wall of the extrusion plate (9) is equidistantly provided with a plurality of first drainage grooves (11), the bottoms of the first drainage grooves (11) are all set as inclined surfaces, and the outer wall of the support plate (5) is provided with a second drainage groove (12); The bottom of the plug rod (20) is symmetrically provided with four first water inlets (29), the outer wall of the plug rod (20) is symmetrically provided with four third drainage grooves (33), the interior of the plug rod (20) is symmetrically provided with four first connecting grooves (32), the bottom of the first connecting groove (32) is connected to the first water inlet (29), the top of the first connecting groove (32) is connected to the third drainage groove (33), and the outer wall of the plug rod (20) is provided with four groups of second water inlets (34), the four groups of the second water inlets (34) are respectively connected to the four first connecting grooves (32); Two annular grooves (36) are symmetrically provided on the top of the base (1); a guide plate (35) is fixedly connected to the outer wall of the insertion rod (20) and is located below the third drainage groove (33); the guide plate (35) is arranged in a truncated cone shape and is located above the annular groove (36); two water storage chambers (37) are symmetrically provided inside the base (1); a second connecting groove (39) is provided inside the base (1) and is located between the water storage chamber (37) and the annular groove (36); and two water extraction ports (38) are symmetrically provided on the top of the base (1); the two water extraction ports (38) are respectively connected to the two water storage chambers (37).

2. The foundation pit support equipment for geotechnical engineering according to claim 1, characterized in that: The inner wall of the support plate (5) is symmetrically fixedly connected to two first sliding shafts (13), the outer walls of the two first sliding shafts (13) are slidably connected to first sliding blocks (14), the two first sliding blocks (14) are fixedly connected to the extrusion plate (9), the outer walls of the two first sliding shafts (13) are sleeved with first springs (15), one end of the first spring (15) is fixedly connected to the support plate (5), and the other end of the first spring (15) is fixedly connected to the first sliding block (14).

3. The foundation pit support equipment for geotechnical engineering according to claim 2, characterized in that: The inner wall of the insertion rod (20) is symmetrically slidably connected to two extension rods (24), the bottoms of the two extension rods (24) are both arranged as inclined surfaces, the inner wall of the insertion rod (20) is rotatably connected to a threaded rod (21), the top of the threaded rod (21) is fixedly connected to a knob (23), the outer wall of the threaded rod (21) is threadedly connected to a sleeve (22), the sleeve (22) is slidably connected to the insertion rod (20), and the bottom of the sleeve (22) is symmetrically rotatably connected to two connecting shafts (25), the two connecting shafts (25) are respectively connected to the The two extension rods (24) are rotatably connected, and the inside of the insertion rod (20) is symmetrically fixedly connected with two second sliding shafts (26), and the outer walls of the two second sliding shafts (26) are slidably connected with second sliders (28), and the two second sliders (28) are respectively fixedly connected to the two extension rods (24). The outer walls of the two second sliding shafts (26) are sleeved with second springs (27), one end of the second spring (27) is fixedly connected to the insertion rod (20), and the other end of the second spring (27) is fixedly connected to the second slider (28).

4. The foundation pit support equipment for geotechnical engineering according to claim 3, characterized in that: Two pressure relief grooves (42) are symmetrically provided at the bottom of the base (1), and the tops of the two pressure relief grooves (42) are both arranged as inclined surfaces. A third water inlet (40) is provided inside the base (1) and between the pressure relief grooves (42) and the water storage chamber (37), and a filter plate (41) is fixedly connected to the inner wall of the third water inlet (40).

5. The foundation pit supporting equipment for geotechnical engineering according to claim 4, characterized in that: Four side panels (30) are fixedly connected to the outer wall of the insertion rod (20) at equal intervals, and the bottoms of the four side panels (30) are all arranged as inclined surfaces.

6. An operating method for a foundation pit support device for geotechnical engineering, the operating method being applicable to the foundation pit support device for geotechnical engineering according to claim 5, characterized in that: The steps of this method are as follows: S1: placing the base (1) in the foundation pit, inserting the two insertion rods (20) into the bottom of the foundation pit by hammering, turning the knob (23) to control the two extension rods (24) to be inserted horizontally into the bottom of the foundation pit, starting the second motor (43) to control the two support plates (5) to open, and supporting the inner wall of the foundation pit; S2: a sponge (8) is arranged inside the supporting plate (5) to absorb water from the inner wall of the foundation pit, and a first motor (16) is started to drive the squeezing block (18) to rotate, thereby controlling the sponge (8) to intermittently compress and drain water; S3: Use a pump to insert into the pumping port (38) to pump out the groundwater in the water storage chamber (37).

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