CN114016517A

CN114016517A - Supporting device for foundation pit side wall and supporting method thereof

Info

Publication number: CN114016517A
Application number: CN202111411903.5A
Authority: CN
Inventors: 赵合全; 寿凌超; 王立峰
Original assignee: Zhejiang Mingsui Technology Co ltd; China Railway 14th Bureau Group Shield Engineering Co Ltd
Current assignee: Zhejiang Mingsui Technology Co ltd; China Railway 14th Bureau Group Shield Engineering Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-02-08
Anticipated expiration: 2041-11-25
Also published as: CN114016517B

Abstract

The invention discloses a supporting device for a side wall of a foundation pit, which comprises a base, a rotary rod, an upper thread, a lower thread, a first thread bush, a second thread bush, a first connecting rod, a second connecting rod, a fixed block and a supporting mechanism, wherein the rotary rod is arranged on the base; the supporting mechanism comprises a supporting block, a moving groove, a limiting groove, a moving block, a limiting structure and a supporting structure; the invention can drive the rotating rod to rotate for a fixed number of turns when supporting, thereby supporting the side wall of the foundation pit; the supporting force is the same every time, and the stability of the support is improved; meanwhile, the supporting block can automatically adapt to the distance according to the size of the foundation pit, so that the adaptability of the support is improved.

Description

Supporting device for foundation pit side wall and supporting method thereof

Technical Field

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a supporting device for a side wall of a foundation pit and a supporting method thereof.

Background

The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit; traditional strutting arrangement's support stable effect is relatively poor, and the support mode is complicated, and can't be according to foundation ditch size automatically regulated.

Disclosure of Invention

The invention provides a supporting device for a side wall of a foundation pit and a supporting method thereof in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a supporting device for the side wall of a foundation pit comprises a base, a rotating rod arranged on the base, an upper thread arranged at the upper end of the rotating rod, a lower thread arranged at the lower end of the rotating rod, a first thread sleeve arranged on the upper thread, a second thread sleeve arranged on the lower thread, a first connecting rod arranged on the first thread sleeve, a second connecting rod arranged on the second thread sleeve, fixed blocks arranged on the first connecting rod and the second connecting rod, and a supporting mechanism arranged on the fixed blocks; the method is characterized in that: the supporting mechanism comprises a supporting block arranged on the fixed block, a moving groove arranged on the fixed block, a plurality of limiting grooves arranged on the inner wall of the moving groove, a moving block arranged in the moving groove, a limiting structure for connecting the moving block and the supporting block, and a supporting structure arranged between the supporting block and the fixed block; the fixed block is arranged at the other ends of the first connecting rod and the second connecting rod and is rotatably connected with the fixed block; the supporting mechanism is arranged on the fixed block; the longitudinal section of the supporting block is U-shaped, and the cross section of the inner top wall of the supporting block is arc-shaped; the fixing block is sleeved on the fixing block in a sliding manner; the cross section of the moving groove is circular and is arranged at the bottom of the fixed block; the limiting grooves are arranged in a plurality and are annularly arranged on the inner wall of the limiting groove along the axial direction of the moving groove; the moving block is movably arranged in the moving groove; the limiting structure is connected with the moving block and the supporting block; the supporting structure is connected with the supporting block and the fixing block.

Mounting a base at the bottom of a foundation pit to be supported; rotating the rotating rod; under the action of the upper threads and the lower threads, the first threaded sleeve is driven to move downwards, and the second threaded sleeve is driven to move upwards; then the first connecting rod and the second connecting rod are driven to slowly turn over; driving the fixed blocks to be close to the side walls of the two ends of the foundation pit; then the supporting block abuts against the side wall, and the supporting block is driven to move on the fixing block; when the first threaded sleeve and the second threaded sleeve move to the maximum stroke, the supporting and limiting structure is started to position the supporting block; simultaneously, the supporting structure is started, so that the supporting block supports the side wall; the base can adapt to uneven ground, so that the supporting effect is better; the first connecting rod and the second connecting rod can be driven to turn over through the rotation of the rotating rod, so that a labor-saving effect is achieved during supporting; the upper threads and the lower threads are arranged, so that synchronous relative movement of the first connecting rod and the second connecting rod can be ensured during supporting, and the stability of supporting is improved; on one hand, the first connecting rod and the second connecting rod can extrude each other when supporting, so that the side wall is supported; on the other hand, the supporting block can be stably driven to support the side wall, so that the supporting effect is improved; the supporting blocks are arranged, so that the side wall is supported, and the supporting blocks can abut against the side wall of the foundation pit when the first connecting rod and the second connecting rod are turned over, so that the fixing block moves; therefore, the device can adapt to the widths of different foundation pits, and the adaptability of the device is improved; the supporting block is automatically limited after being moved by the aid of the limiting grooves, so that the supporting block can be always in the best position, and adaptability is improved.

The limiting structure comprises a rotating block arranged at the bottom of the moving groove, a first turbine groove arranged on the rotating block, a plurality of limiting blocks arranged on the first turbine groove, a buffer assembly arranged on the moving block, a thread groove arranged at the bottom of the rotating block, a first telescopic block arranged at the bottom of the limiting groove, an embedded ball arranged on the side wall of the first telescopic block, a telescopic groove arranged at the bottom of the fixing block, a second telescopic block arranged on the telescopic groove, a reset torsion spring for connecting the first telescopic block and the second telescopic block, a telescopic spring arranged at the bottom of the first telescopic block, a first hinged rod arranged on the first connecting rod, a second hinged rod arranged on the second connecting rod, a positioning pipe arranged on the inner wall of the telescopic groove, a positioning groove arranged on the side wall of the first telescopic block, a first positioning plug arranged in the positioning pipe, The movable plate is arranged in the positioning groove, the cross rod is connected between the movable plate and the first positioning plug, the piston block is arranged at the bottom of the positioning groove, and the driving groove is arranged on the second connecting rod; the rotating block is rotatably arranged at the bottom of the moving groove; the first turbine groove is turbine-shaped and is arranged on the upper end surface of the rotating block; the limiting block is provided with three blocks, is uniformly arranged on the upper end surface of the rotating block along the circumferential direction of the rotating block and is meshed with the first turbine groove; the limiting block can be embedded in the moving block in a transverse moving way; the longitudinal section of the limiting block is T-shaped; the plurality of thread grooves are uniformly arranged along the circumferential direction of the rotating block; the first telescopic block is movably arranged at the bottom of the limiting groove; the embedded ball is arranged on the side wall of the first telescopic block and is embedded with the thread groove.

When the first threaded sleeve and the second threaded sleeve move to the maximum stroke, the driving groove drives the piston block to move, then the air pressure can drive the moving plate to move, and the first positioning plug is driven to be separated from the positioning groove under the action of the cross rod; at the moment, the first telescopic block releases the limit, and the first telescopic block is further driven to move under the action of a return spring; the embedded ball is clamped into the thread groove to drive the rotating block to rotate; further driving the limiting block to move transversely to enable the limiting block to be clamped into the limiting groove; the first turbine can be driven to rotate through the arrangement of the rotating block, and then the limiting block is driven to move synchronously, so that the limiting block can be driven to be inserted into the limiting groove; on one hand, the limiting effect is realized, and the stability is improved; on the other hand, the limiting block can be driven to prevent dislocation under the action of pressure on the supporting plate, so that the limiting stability is improved; the embedded ball can be driven to be embedded with the thread groove through the arrangement of the first telescopic block, so that the rotation of the rotating block can be driven; the second telescopic block can drive the reset torsion spring to accumulate force when the first connecting rod and the second connecting rod turn over, so that the limiting can be quickly carried out when the limiting is needed; the stability during supporting is improved; the first hinge rod and the second hinge rod can automatically drive the second telescopic block to move under the overturning of the first connecting rod and the second connecting rod, so that the first threaded sleeve and the second threaded sleeve can be ensured to drive the rotating block to rotate when moving to the maximum stroke, and the driving stability is improved; the first telescopic block can be limited by the arrangement of the first positioning plug, and the supporting block is limited when moving, so that the stability is improved; the arrangement of the driving groove can ensure that the first thread sleeve and the second thread sleeve drive the first telescopic block to move when moving to the maximum stroke, so that the limiting stability is improved.

The buffer assembly comprises an arc block arranged at the upper end of the moving block, a fixed rod arranged on the arc block, a sliding sleeve arranged on the fixed rod, a first rack arranged on the moving block, a first gear arranged in the moving block, a second rack arranged on the limited block, a first push rod arranged on the first rack, a second push rod arranged on the sliding sleeve, a third push rod arranged at the upper end of the fixed rod, a support rod arranged at the top end of the third push rod, a buffer groove arranged on the inner wall of the support block and a slide block arranged at the top end of the support rod; the cross section of the arc block is arc-shaped and is fixedly arranged at the upper end of the moving block; the sliding sleeve can be arranged on the fixed rod in a vertically moving mode; one end of the first push rod is hinged with the first rack, and the other end of the first push rod is hinged with the sliding sleeve; one end of the second push rod is hinged with the sliding sleeve and is positioned above the first push rod; the second push rods are provided with a plurality of second push rods which are uniformly arranged along the circumferential direction of the sliding sleeve; one end of the third push rod is hinged to the upper end of the fixed rod; the other end of the second push rod is arranged on the third push rod in a sliding manner; the supporting rod is hinged with the top end of the third push rod; the longitudinal section of the buffer groove is arc-shaped and is arranged at the top end of the supporting block; the sliding block is slidably arranged in the buffer slot and is hinged with the supporting rod.

When the limiting block moves, the second rack is driven to move, and then the first rack is driven to move under the action of the first gear; at the moment, the first push rod starts to turn over, and meanwhile, the supporting sliding sleeve moves upwards; then the second push rod is driven to turn over, and the third push rod is lifted outwards; at the moment, the supporting rod lifting slide block moves in the buffer slot; when the sliding block moves to the inner wall of the buffer slot, the supporting block is supported; the stress range can be improved through the arrangement of the arc blocks, so that the supporting force to the supporting block can be improved; the sliding sleeve can drive the supporting rod to be opened, so that the sliding block can be driven to move in the buffer groove, and the moving distance of the supporting block can be adapted; after the supporting block stops moving, the sliding block can be pressed against the ground of the supporting block, so that the supporting effect can be improved; meanwhile, under the linkage of the second push rod and the third push rod, the moving range of the sliding block can be enlarged, the stress effect is improved, and the supporting effect is better.

The supporting structure comprises a limiting cavity arranged in the fixing block, a driving block arranged in the limiting cavity, rectangular teeth arranged on the driving block, a rotating block arranged on each rectangular tooth, a clamping groove arranged on the inner wall of the limiting groove, a triangular block arranged on the inner wall of the clamping groove, limiting teeth arranged on the rotating block, a second clamping groove arranged on the limiting block and a supporting assembly arranged at the upper end of the fixing block; the rectangular teeth are arranged on the driving block and are inserted into each limiting groove; the rotating block is rotatably arranged at the top end of the rectangular tooth; the clamping groove is formed in the inner wall of each limiting groove; the triangular block is arranged on the inner wall of the clamping groove; the limiting teeth are fixedly arranged on the rotating block and buckled with the triangular block; the longitudinal section of the limiting tooth is L-shaped.

When the limiting block is inserted into the limiting groove, the rotating block is driven to rotate, then the limiting teeth are driven to turn over, and at the moment, the limiting teeth are buckled into the second clamping groove; the further limiting block is combined with the driving block into a whole; and driving the driving block to move transversely; the limit teeth can be limited through the arrangement of the triangular blocks, so that the driving block can be limited, and the stability during supporting is improved; the rectangular teeth can drive the driving block to move all the time after the limiting block moves, so that the stability of the support is improved; the driving block and the limiting block are connected into a whole through the second clamping groove, so that the driving block and the limiting block cannot be dislocated when being supported again, and the stability is improved

The supporting assembly comprises a driving rack arranged at the upper end of the driving block, a sliding chute arranged at the top end of the fixed block, a sliding block arranged in the sliding chute, a first overturning rod arranged on the sliding block, a second overturning rod arranged in the first overturning rod, a pull rod arranged at the top end of the moving block, a pressing block arranged at the upper end of the second overturning rod, a second positioning groove arranged on the inner wall of the first overturning rod, a clamping block arranged on the side wall of the second overturning rod, a limiting hole arranged on the clamping block, a clamping block spring arranged on the clamping block, two inserting plates arranged on the sliding block, a bolt arranged on the inserting plate, a second moving block arranged below the inserting plate and a driving piece arranged in the sliding block; one end of the pull rod is fixedly arranged at the top of the moving block, and the other end of the pull rod is slidably embedded with the second turnover rod; the longitudinal section of the pressing block is arc-shaped and is abutted against the upper end wall of the supporting block; is hinged with the second turnover rod; the second positioning grooves are multiple and are uniformly formed in the inner wall of the first turnover rod along the axial direction of the first turnover rod.

When the support block moves to drive the moving block to move, the pull rod drives the second turnover rod to turn over, so that the sliding block is driven to start to move; the second turnover rod moves in the first turnover rod in the moving process; when the driving block moves transversely, the driving rack is driven to move, then the driving piece starts to start, and the driving plugboard is tightly attached to the surface of the first turnover rod; then the bolt is inserted into the limiting hole to limit the second turnover rod; the first turning rod can be driven to move through the arrangement of the sliding block, so that the angle between the first turning rod and the upper surface of the fixed block can be changed; therefore, the supporting block can automatically adapt to the distance between the supporting block and the fixed block after stopping moving, and the applicability is improved; the first turnover rod can be driven to move along with the movement of the supporting block through the arrangement of the pull rod, so that the adaptability of the first turnover rod and the second turnover rod can be improved; the clamping block can be automatically clamped into the second clamping groove when the second turnover rod moves, so that the position of the second turnover rod can be limited at any time; the movement of the inserting plate can drive the inserting pin to be embedded into the limiting hole, so that the limiting stability of the first overturning rod and the second overturning rod is improved; the setting through the second movable block can drive the upset of picture peg and first upset pole, has improved stability.

The driving piece is sleeved with a second gear arranged at the bottom of the sliding chute, a third rack arranged in the sliding block, a fourth rack arranged on the third rack, a third gear arranged in the sliding block and a second turbine groove arranged on the third gear; the second gear is arranged at the bottom of the sliding groove and meshed with the driving rack; the third rack is arranged in the sliding block in a transversely movable manner and is meshed with the second gear; the fourth rack is arranged on the third rack; the third gear is arranged in the sliding block and is meshed with the fourth rack; the second turbine groove is formed in the fourth rack and meshed with the second moving block.

When the driving block moves, the third rack is driven to move, then the third gear is driven to rotate, the second turbine groove is further driven to rotate, and the second moving block is driven to move; when the third rack moves to the bottom edge of the sliding block, the sliding block is driven to move for a distance; on one hand, the third gear can be driven to rotate through the arrangement of the third rack, so that the first turnover rod and the second turnover rod are stably limited; on the other hand, the sliding block can be driven to further move, so that the pressing block is driven to further move upwards, and the supporting effect is realized; the stability of the support is further improved.

In conclusion, the invention has the following advantages: the invention can drive the rotating rod to rotate for a fixed number of turns when supporting, thereby supporting the side wall of the foundation pit; the supporting force is the same every time, and the stability of the support is improved; meanwhile, the supporting block can automatically adapt to the distance according to the size of the foundation pit, so that the adaptability of the support is improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional perspective view along a-a of fig. 2 of the present invention.

FIG. 4 is a partial view taken at A in FIG. 3 according to the present invention.

Fig. 5 is a partial view of the invention at B in fig. 3.

Fig. 6 is a partial view of the invention at C of fig. 4.

Fig. 7 is a partial view of the invention at D in fig. 4.

Fig. 8 is a partial view of the invention at E of fig. 4.

Fig. 9 is a partial view of the invention at F in fig. 4.

Fig. 10 is an exploded view of the stop structure of the present invention.

Figure 11 is an exploded view of the driver of the present invention.

Detailed Description

As shown in fig. 1-11, the device comprises a base 1, a rotary rod 10, an upper thread 11, a lower thread 12, a first thread bushing 13, a second thread bushing 13, a first connecting rod 14, a second connecting rod 15, a fixed block 16, and a supporting mechanism 2; the supporting mechanism 2 comprises a supporting block 20, a moving groove 21, a limiting groove 22, a moving block 23, a limiting structure 3 and a supporting structure 4; the cross section of the base 1 is circular; the rotating rod 10 is rotatably arranged on the base 1; the upper thread 11 is arranged at the upper end of the rotating rod 10; the lower thread 12 is arranged at the lower end of the rotating rod 10, and the thread directions of the lower thread 12 and the upper thread 11 are opposite; the first thread sleeve 13 is arranged on the upper thread 11 and is in threaded connection with the upper thread; the second thread sleeve 130 is arranged on the lower thread 12 and is in threaded connection with the lower thread 12; the number of the first connecting rods 14 is 2, and the first connecting rods are uniformly arranged along the circumferential direction of the first threaded sleeve 13; one end of the first connecting rod 14 is rotatably arranged on the first thread bush 13; the number of the second connecting rods 15 is 2, and the second connecting rods are uniformly arranged along the circumferential direction of the second threaded sleeve 130; one end of the second connecting rod 15 is rotatably arranged on the second thread sleeve 130; the fixed block 16 is arranged at the other ends of the first connecting rod 14 and the second connecting rod 15 and is rotatably connected with the fixed block 16; the supporting mechanism 2 is arranged on the fixed block 16; the longitudinal section of the supporting block 20 is U-shaped, and the cross section of the inner top wall of the supporting block 20 is arc-shaped; slidably sleeved on the fixing block 16; the cross section of the moving groove 21 is circular and is arranged at the bottom of the fixed block 16; a plurality of limiting grooves 22 are arranged and are annularly arranged on the inner wall of the limiting groove 22 along the axial direction of the moving groove 21; the moving block 23 is movably arranged in the moving groove 21; the limiting structure 3 is connected with a moving block 23 and a supporting block 20; the support structure 4 connects the support block 20 and the fixed block 16.

As shown in fig. 5 and 10, the limiting structure 3 includes a rotating block 30, a first turbine groove 31, a limiting block 32, a buffer assembly 5, a threaded groove 34, a first telescopic block 35, an embedded ball 36, a telescopic groove 37, a second telescopic block 38, a return torsion spring 39, a telescopic spring 301, a first hinge rod 302, a second hinge rod 303, a positioning tube 304, a positioning slot 305, a first positioning plug 306, a moving plate 307, a cross rod 308, a piston block 309, and a driving groove 310; the rotating block 30 is rotatably arranged at the bottom of the moving groove 21; the first turbine groove 31 is turbine-shaped and is provided on the upper end surface of the rotating block 30; the three limiting blocks 32 are uniformly arranged on the upper end surface of the rotating block 30 along the circumferential direction of the rotating block 30 and are meshed with the first turbine grooves 31; the limiting block 32 can be transversely movably embedded in the moving block 23; the longitudinal section of the limiting block 32 is T-shaped; a plurality of thread grooves 34 are uniformly arranged along the circumferential direction of the rotating block 30; the first telescopic block 35 is movably arranged at the bottom of the limiting groove 22; the embedded ball 36 is arranged on the side wall of the first telescopic block 35 and is embedded with the thread groove 34; the telescopic groove 37 is arranged at the bottom of the fixed block 16; the second telescopic block 38 is telescopically arranged at the bottom of the telescopic groove 37; the reset torsion spring 39 is connected with the first telescopic block 35 and the second telescopic block 38; the telescopic spring 301 is connected with the first telescopic block 35 and the telescopic groove 37; one end of the first hinge rod 302 is hinged with the first connecting rod 14, and the other end is hinged with the second telescopic block 38; one end of the second hinge rod 303 is hinged with the second connecting rod 15, and the other end is hinged with the second telescopic block 38; the positioning pipe 304 is arranged on the inner wall of the telescopic groove 37; the positioning groove 305 is formed in the side wall of the first telescopic block 35; the first positioning plug 306 is movably arranged in the positioning groove 305 and is connected with the positioning groove 305; the moving plate 307 is movably arranged in the positioning tube 304; the cross bar 308 is X-shaped in cross section and is connected with the first positioning plug 306 and the moving plate 307; the piston block 309 is arranged at the bottom of the positioning tube 304; the driving groove 310 is opened in the second connecting rod 15 and abuts against the piston block 309.

As shown in fig. 6, the buffer assembly 5 includes an arc block 50, a fixed rod 51, a sliding sleeve 52, a first rack 53, a first gear 54, a second rack 540, a first push rod 55, a second push rod 56, a third push rod 57, a support rod 59, a buffer groove 501, and a sliding block 502; the cross section of the arc block 50 is arc-shaped and is fixedly arranged at the upper end of the moving block 23; the lower end of the fixed rod 51 is arranged on the circular arc block 50, and the upper end of the fixed rod is at a certain distance from the inner wall of the supporting block 20; the sliding sleeve 52 can be arranged on the fixed rod 51 in a vertically moving manner; the number of the first racks 53 is 2, and the first racks can be transversely arranged on the moving block 23; the first gear 54 is arranged in the moving block 23 and meshed with the first rack 53; the second rack 540 is arranged on the limiting block 32 and meshed with the first gear 54; one end of the first push rod 55 is hinged with the first rack 53, and the other end is hinged with the sliding sleeve 52; one end of the second push rod 56 is hinged with the sliding sleeve 52 and is positioned above the first push rod 55; the second push rods 56 are provided with a plurality of second push rods which are uniformly arranged along the circumferential direction of the sliding sleeve 52; one end of the third push rod 57 is hinged at the upper end of the fixed rod 51; the other end of the second push rod 56 is slidably arranged on a third push rod 57; the supporting rod 59 is hinged with the top end of the third push rod 57; the longitudinal section of the buffer tank 501 is arc-shaped and is arranged at the top end of the supporting block 20; the sliding block 502 is slidably disposed in the buffer slot 501 and hinged to the supporting rod 59.

As shown in fig. 7, the supporting structure 4 includes a limiting cavity 40, a driving block 41, a rectangular tooth 42, a rotating block 43, a clamping groove 44, a triangular block 45, a limiting tooth 46, a second clamping groove 47, and a supporting component 6; the limiting cavity 40 is arranged in the fixed block 16 and is positioned on the side edge of the moving groove 21; the driving block 41 can be transversely arranged in the limiting cavity 40 in a movable manner; the rectangular teeth 42 are arranged on the driving block 41 and are inserted into each limit groove 22; the rotating block 43 is rotatably arranged at the top end of the rectangular tooth 42; the clamping groove 44 is formed in the inner wall of each limiting groove 22; the triangular block 45 is arranged on the inner wall of the clamping groove 44; the limiting teeth 46 are fixedly arranged on the rotating block 43 and are buckled with the triangular block 45; the longitudinal section of the limit tooth 46 is L-shaped; the second locking groove 47 is formed on the limiting block 33.

As shown in fig. 4 and 8-9, the supporting assembly 6 includes a driving rack 60, a sliding slot 61, a sliding block 62, a first turning rod 63, a second turning rod 64, a pull rod 65, a pressing block 66, a second positioning slot 67, a latch 69, a limiting hole 601, a latch spring 602, an inserting plate 603, a plug 604, a second moving block 605, and a driving member 7; the driving rack 60 is arranged at the upper end of the driving block 41; the sliding groove 61 is formed in the top end of the fixed block 16; the sliding block 62 is movably arranged in the sliding groove 61; the lower end of the first turning rod 63 is hinged with a sliding block 62; the second turning rod 64 is telescopically arranged in the first turning disc 63; one end of the pull rod 65 is fixedly arranged at the top of the moving block 23, and the other end of the pull rod is slidably embedded with the second turnover rod 64; the longitudinal section of the pressing block 66 is arc-shaped and is pressed against the upper end wall of the supporting block; hinged with the second turnover rod 64; a plurality of second positioning grooves 67 are formed in the inner wall of the first turnover rod 63 uniformly along the axial direction of the first turnover rod 63; the clamping block 69 is movably arranged on the side wall of the second turning rod 68; the limiting hole 601 is formed in the fixture block 69; the latch spring 602 is connected with the latch 69 and the second turning rod 64; the inserting plate 603 is provided with 2 sliding blocks 62 which are movably arranged; the plug pin 604 is arranged on the plug board 603 and is embedded with the limiting hole 601; the second moving block 605 is movably disposed on the sliding block 62 and hinged to the inserting plate 603.

As shown in fig. 11, the driving member 7 includes a second gear 70, a third rack 71, a fourth rack 72, a third gear 73, and a second turbine groove 74; the second gear 70 is arranged at the bottom of the sliding chute 61 and meshed with the driving rack 60; the third rack 71 is arranged in the sliding block 62 in a transversely movable manner and is meshed with the second gear 70; the fourth rack 72 is arranged on the third rack 71; the third gear 73 is arranged in the sliding block 62 and meshed with the fourth rack 72; the second turbine groove 74 is provided in the fourth rack 74 and is engaged with the second moving block 605.

The specific implementation process is as follows: firstly, mounting a base 1 at the bottom of a foundation pit to be supported; rotating the rotating rod 10 to drive the first threaded sleeve 13 to move downwards and drive the second threaded sleeve 130 to move upwards; at the moment, the first connecting rod 14 and the second connecting rod 15 slowly turn over; the fixed blocks 16 are driven to be close to the side walls of the two ends of the foundation pit; then the supporting block 20 is abutted against the side wall, and the supporting block 20 is driven to move on the fixing block 16; at this time, the pull rod 65 drives the second turning rod 65 to turn over, so that the sliding block 62 is driven to move; the second turning lever 65 moves within the first turning lever 63 during the movement; continuing to rotate the rotating rod 10, and driving the first threaded sleeve 13 and the second threaded sleeve 130 to move to the maximum stroke; then the driving groove 310 drives the piston block 309 to move, and then the air pressure drives the moving plate 307 to move, and under the action of the cross rod 308, the first positioning plug 306 is driven to be separated from the positioning groove 305; at the moment, the first telescopic block 35 is released from limiting, and the first telescopic block 35 is further driven to move under the action of the return spring 301; the embedded ball 36 is clamped in the thread groove 34 to drive the rotating block 30 to rotate; further driving the limiting block 32 to move transversely, so that the limiting block 32 is clamped in the limiting groove 22; then the second rack 540 is driven to move, and then the first rack 53 is driven to move under the action of the first gear 54; at this time, the first push rod 55 starts to turn over, and the supporting sliding sleeve 52 moves upwards at the same time; then the second push rod 56 is driven to turn over, and the third push rod 57 is lifted outwards; at the moment, the supporting rod 59 lifts the sliding block 502 to move in the buffer groove 501; supporting the supporting block 20 when the slider 502 moves to the inner wall of the buffer tank 501; meanwhile, the rotating block 43 is driven to rotate, then the limiting teeth 46 are driven to turn over, and at the moment, the limiting teeth 46 are buckled into the second clamping grooves 47; the further limit block 32 is integrated with the driving block 41; and drives the driving block 41 to move laterally; then the driving rack 60 is driven to move, the third rack 71 is driven to move, then the third gear 73 is driven to rotate, the second turbine groove 74 is further driven to rotate, and the second moving block 605 is driven to move; the driving insertion plate 603 clings to the surface of the first turnover rod 63; then the bolt 604 is inserted into the limiting hole 601 to limit the second turning rod 64, and then the third rack 71 moves to the bottom edge of the sliding block to drive the sliding block to move for a distance; at this time, the pressing block 66 is driven to press against the supporting block 20.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A supporting device for a side wall of a foundation pit comprises a base (1), a rotating rod (10) arranged on the base (1), an upper thread (11) arranged at the upper end of the rotating rod (10), a lower thread (12) arranged at the lower end of the rotating rod (10), a first thread sleeve (13) arranged on the upper thread (11), a second thread sleeve (130) arranged on the lower thread (12), a first connecting rod (14) arranged on the first thread sleeve (13), a second connecting rod (15) arranged on the second thread sleeve (130), a fixed block (16) arranged on the first connecting rod (14) and the second connecting rod (15), and a supporting mechanism (2) arranged on the fixed block (16); the method is characterized in that: the supporting mechanism (2) comprises supporting blocks (20) arranged on the fixing blocks (16), a moving groove (21) arranged on the fixing blocks (16), a plurality of limiting grooves (22) arranged on the inner wall of the moving groove (21), a moving block (23) arranged in the moving groove (21), a limiting structure (3) connected with the moving block (23) and the supporting blocks (20), and a supporting structure (4) arranged between the supporting blocks (20) and the fixing blocks (16); the fixed block (16) is arranged at the other ends of the first connecting rod (14) and the second connecting rod (15) and is rotatably connected with the fixed block (16); the supporting mechanism (2) is arranged on the fixing block (16); the longitudinal section of the supporting block (20) is U-shaped, and the cross section of the inner top wall of the supporting block (20) is arc-shaped; the fixing block (16) is sleeved on the fixing block in a sliding way; the cross section of the moving groove (21) is circular and is arranged at the bottom of the fixed block (16); a plurality of limiting grooves (22) are arranged and are annularly arranged on the inner wall of the limiting groove (22) along the axial direction of the moving groove (21); the moving block (23) is movably arranged in the moving groove (21); the limiting structure (3) is connected with the moving block (23) and the supporting block (20); the supporting structure (4) is connected with the supporting block (20) and the fixing block (16).

2. The supporting device for the side wall of the foundation pit as claimed in claim 1, wherein: limiting structure (3) including locate rotatory piece (30) of shifting chute (21) bottom, locate first turbine groove (31) on rotatory piece (30), locate polylith stopper (32) on first turbine groove (31), locate buffer unit (5) on the movable block (23), locate screw thread groove (34) of rotatory piece (30) bottom, locate first flexible piece (35) of spacing groove (22) bottom, locate inlay ball (36) mutually on first flexible piece (35) lateral wall, locate flexible groove (37) of fixed block (16) bottom, locate second flexible piece (38) on flexible groove (37), reset torsion spring (39) of connecting first flexible piece (35) and second flexible piece (38), locate telescopic spring (301) of first flexible piece (35) bottom, locate first articulated pole (302) on first connecting rod (14), The second hinge rod (303) is arranged on the second connecting rod (15), the positioning tube (304) is arranged on the inner wall of the telescopic groove (37), the positioning groove (305) is arranged on the side wall of the first telescopic block (35), the first positioning plug (306) is arranged in the positioning tube (304), the moving plate (307) is arranged in the positioning groove (305), the cross rod (308) is connected between the moving plate (307) and the first positioning plug (306), the piston block (309) is arranged at the bottom of the positioning groove (305), and the driving groove (310) is arranged on the second connecting rod (15); the rotating block (30) is rotatably arranged at the bottom of the moving groove (21); the first turbine groove (31) is in a turbine shape and is arranged on the upper end surface of the rotating block (30); the limiting blocks (32) are uniformly arranged on the upper end face of the rotating block (30) along the circumferential direction of the rotating block (30) and are meshed with the first turbine grooves (31); the limiting block (32) can be transversely movably embedded in the moving block (23); the longitudinal section of the limiting block (32) is T-shaped; a plurality of thread grooves (34) are uniformly arranged along the circumferential direction of the rotating block (30); the first telescopic block (35) is movably arranged at the bottom of the limiting groove (22); the embedded ball (36) is arranged on the side wall of the first telescopic block (35) and is embedded with the thread groove (34).

3. The supporting device for the side wall of the foundation pit as claimed in claim 2, wherein: the buffer assembly (5) comprises an arc block (50) arranged at the upper end of the moving block (23), a fixed rod (51) arranged on the arc block (50), a sliding sleeve (52) arranged on the fixed rod (51), a first rack (53) arranged on the moving block (23), a first gear (54) arranged in the moving block (23), a second rack (540) arranged on the limited block (32), a first push rod (55) arranged on the first rack (53), a second push rod (56) arranged on the sliding sleeve (52), a third push rod (57) arranged at the upper end of the fixed rod (51), a support rod (59) arranged at the top end of the third push rod (57), a buffer groove (501) arranged on the inner wall of the support block (20), and a sliding block (502) arranged at the top end of the support rod (59); the cross section of the arc block (50) is arc-shaped and is fixedly arranged at the upper end of the moving block (23); the sliding sleeve (52) can be arranged on the fixed rod (51) in a vertically moving manner; one end of the first push rod (55) is hinged with the first rack (53), and the other end of the first push rod is hinged with the sliding sleeve (52); one end of the second push rod (56) is hinged with the sliding sleeve (52) and is positioned above the first push rod (55); the second push rods (56) are provided with a plurality of second push rods which are uniformly arranged along the circumferential direction of the sliding sleeve (52); one end of the third push rod (57) is hinged at the upper end of the fixed rod (51); the other end of the second push rod (56) is arranged on a third push rod (57) in a sliding manner; the supporting rod (59) is hinged with the top end of the third push rod (57); the longitudinal section of the buffer tank (501) is arc-shaped and is arranged at the top end of the supporting block (20); the sliding block (502) is slidably arranged in the buffer groove (501) and hinged with the supporting rod (59).

4. The supporting device for the side wall of the foundation pit as claimed in claim 1, wherein: the supporting structure (4) comprises a limiting cavity (40) arranged in the fixing block (16), a driving block (41) arranged in the limiting cavity (40), rectangular teeth (42) arranged on the driving block (41), a rotating block (43) arranged on each rectangular tooth (42), clamping grooves (44) arranged on the inner wall of the limiting groove (22), triangular blocks (45) arranged on the inner wall of the clamping grooves (44), limiting teeth (46) arranged on the rotating blocks (43), second clamping grooves (47) arranged on the limiting blocks (33), and a supporting assembly (6) arranged at the upper end of the fixing block (16); the rectangular teeth (42) are arranged on the driving block (41) and are inserted into each limiting groove (22); the rotating block (43) is rotatably arranged at the top end of the rectangular tooth (42); the clamping groove (44) is formed in the inner wall of each limiting groove (22); the triangular block (45) is arranged on the inner wall of the clamping groove (44); the limiting teeth (46) are fixedly arranged on the rotating block (43) and are buckled with the triangular block (45); the longitudinal section of the limiting tooth (46) is L-shaped.

5. The supporting device for the side wall of the foundation pit as claimed in claim 4, wherein: support assembly (6) including locating drive rack (60) of drive block (41) upper end, locate spout (61) on fixed block (16) top, locate sliding block (62) in spout (61), locate first upset pole (63) on sliding block (62), locate second upset pole (64) in first upset pole (63), locate pull rod (65) on movable block (23) top, locate support block (66) of second upset pole (64) upper end, locate second constant head tank (67) on first upset pole (63) inner wall, locate fixture block (69) on second upset pole (68) lateral wall, locate spacing hole (601) on fixture block (69), locate spring (602) on fixture block (69), locate picture peg (603) on sliding block (62), A plug pin (604) arranged on the inserting plate (603), a second moving block (605) arranged below the inserting plate (603), and a driving piece (7) arranged in the sliding block (62); one end of the pull rod (65) is fixedly arranged at the top of the moving block (23), and the other end of the pull rod is slidably embedded with the second turnover rod (64); the longitudinal section of the pressing block (66) is arc-shaped and is pressed against the upper end wall of the supporting block; is hinged with a second turning rod (64); the second positioning grooves (67) are arranged in a plurality and are uniformly formed in the inner wall of the first turnover rod (63) along the axial direction of the first turnover rod (63).

6. The supporting device for the side wall of the foundation pit as claimed in claim 5, wherein: the driving piece (7) is wrapped and opened on a second gear (70) arranged at the bottom of the sliding groove (61), a third rack (71) arranged in the sliding block (62), a fourth rack (72) arranged on the third rack (71), a third gear (73) arranged in the sliding block (62) and a second turbine groove (74) arranged on the third gear (73); the second gear (70) is arranged at the bottom of the sliding groove (61) and is meshed with the driving rack (60); the third rack (71) is arranged in the sliding block (62) in a transversely movable manner and is meshed with the second gear (70); the fourth rack (72) is arranged on the third rack (71); the third gear (73) is arranged in the sliding block (62) and is meshed with the fourth rack (72); the second turbine groove (74) is provided on the fourth rack (74) and is engaged with the second moving block (605).

7. A supporting method for the supporting device for the side wall of the foundation pit, which is disclosed by the claims 1 to 6, comprises the following steps: firstly, mounting a base (1) at the bottom of a foundation pit to be supported; the rotating rod (10) is rotated to drive the first threaded sleeve (13) to move downwards and drive the second threaded sleeve (130) to move upwards; at the moment, the first connecting rod (14) and the second connecting rod (15) slowly turn over; the fixed blocks (16) are driven to be close to the side walls of the two ends of the foundation pit; then the supporting block (20) is abutted against the side wall, and the supporting block (20) is driven to move on the fixing block (16); at the moment, the pull rod (65) drives the second turnover rod (65) to turn over, so that the sliding block (62) is driven to move; the second turning rod (65) moves in the first turning rod (63) in the moving process; continuously rotating the rotating rod (10) to drive the first threaded sleeve (13) and the second threaded sleeve (130) to move to the maximum stroke; then the driving groove (310) drives the piston block (309) to move, then the air pressure drives the moving plate (307) to move, and the first positioning plug (306) is driven to be separated from the positioning groove (305) under the action of the cross rod (308); at the moment, the first telescopic block (35) is released from limiting, and the first telescopic block (35) is further driven to move under the action of a return spring (301); the embedded ball (36) is clamped into the thread groove (34) to drive the rotating block (30) to rotate; further driving the limiting block (32) to move transversely, so that the limiting block (32) is clamped into the limiting groove (22); then the second rack (540) is driven to move, and then the first rack (53) is driven to move under the action of the first gear (54); at the moment, the first push rod (55) starts to turn over, and the supporting sliding sleeve (52) moves upwards; then the second push rod (56) is driven to turn over, and the third push rod (57) is lifted outwards; at the moment, the supporting rod (59) lifts the sliding block (502) to move in the buffer groove (501); when the sliding block (502) moves to the inner wall of the buffer groove (501), the supporting block (20) is supported; meanwhile, the rotating block (43) is driven to rotate, then the limiting teeth (46) are driven to turn over, and the limiting teeth (46) are buckled into the second clamping grooves (47); a further limiting block (32) is integrated with the driving block (41); and driving the driving block (41) to move laterally; then the driving rack (60) is driven to move, the third rack (71) is driven to move, then the third gear (73) is driven to rotate, the second turbine groove (74) is further driven to rotate, and the second moving block (605) is driven to move; the driving flashboard (603) is tightly attached to the surface of the first overturning rod (63); then a bolt (604) is inserted into the limiting hole (601) to limit the second turning rod (64), and then the third rack (71) moves to the bottom edge of the sliding block to drive the sliding block to move for a distance; at this time, the pressing block (66) is driven to press against the supporting block (20).