CN213653473U - Deformation compensation device for foundation pit supporting system and foundation pit supporting system - Google Patents

Abstract

The utility model discloses a deformation compensation arrangement and foundation ditch braced system for foundation ditch braced system, the device includes a plurality of deformation compensation structures that are located between interior purlin and the peripheral purlin, deformation compensation structure includes vertical and interval arrangement's fixed plate and butt board, and connect the chain drive between fixed plate and butt board, the fixed plate links to each other with interior purlin, be equipped with the connecting plate between two gears of chain drive, the lower extreme of connecting plate is equipped with the riser, be connected with compressed tilting mechanism between riser and the fixed plate, tilting mechanism is used for driving the connecting plate upset and then drives the upset of butt board, so that the butt board keeps the state of vertical and peripheral purlin butt. Peripheral purlin axial deformation extrudees the device, orders about the chain tooth and changes a little to the connecting plate slope leads to tilting mechanism to be compressed, makes whole device shrink, and supports tightly between the inside and outside peripheral purlin. The abutting plates are kept in a state of being vertically abutted with the peripheral purlin by adjusting the overturning mechanism.

Description

Deformation compensation device for foundation pit supporting system and foundation pit supporting system

Technical Field

The utility model belongs to the technical field of foundation ditch building technology and specifically relates to a deformation compensation arrangement and foundation ditch braced system for foundation ditch braced system is related to.

Background

Along with the continuous development of urban underground space, the depth of a basement is larger and larger, pipelines in an urban core area are dense, the periphery of a deep foundation pit is often close to subways, houses and roads, and the requirement of the peripheral environment on the deformation control of the foundation pit is high. In order to ensure the safety of the underground structure and the surrounding environment of the foundation pit, protective measures such as supporting and reinforcing are required to be adopted on the side wall and the periphery of the foundation pit. The existing foundation pit supporting system generally comprises a foundation pit peripheral retaining pile or a foundation pit peripheral retaining wall arranged around the edge of a foundation pit, an enclosing purlin beam positioned on the inner side of the foundation pit enclosing retaining pile and an inner supporting beam supported between the enclosing purlin beams, so that the foundation pit is supported.

On one hand, the existing foundation pit supporting structure has huge water and soil pressure of a deep foundation pit retaining support; on the other hand, with the continuous increase of the scale of the foundation pit, the length of an inner supporting beam of the foundation pit can reach hundreds of meters, and due to the earth excavation problem caused by the scale of the foundation pit and the urban management, the service time of the foundation pit support is prolonged, and even a plurality of chills and sunstroke are spanned. Enclose the purlin roof beam on the foundation ditch inner wall and cause axial deformation easily in long-time use, because peripheral purlin axial and self length direction's deformation can lead to inside and outside peripheral purlin whole along self length direction deformation, the length direction who leads to peripheral purlin becomes the bending form to reduce the butt effect to the foundation ditch inner wall, cause the defect of support framework damage in the foundation ditch.

Chinese utility model patent application CN 111188342 a discloses a two enclose purlin concrete inner support system of compensation arrangement is warp in area, through including setting up hydraulic jack between enclosing purlin and the peripheral purlin, with outside purlin and the outside back of a foundation ditch peripheral fender wall or foundation ditch peripheral fender wall, insert in the inserted sheet compensation warp locking device through the inserted sheet to eliminate the clearance between each inserted sheet on the inserted sheet compensation warp locking device, thereby support enclose purlin and peripheral purlin in. By the structure, the problem of potential safety hazards of the foundation pit caused by overlarge deformation in the foundation pit under the combined action of the external soil pressure of the foundation pit and the axial shrinkage effect of the inner supporting beam of the foundation pit enclosure outer protecting pile or the foundation pit enclosure wall can be solved. However, the device does not consider the resistance of the axial deformation of the peripheral purlin, and the resistance is started only when the peripheral purlin is bent in the length direction, so that the effect is limited. And, difficult installation is between interior periphery purlin when pneumatic cylinder and inserted sheet formula compensation deformation locking device operation to and the power supply of pneumatic cylinder became invalid and can cause the pneumatic cylinder can't support between interior periphery purlin.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a deformation compensation arrangement for foundation ditch braced system to solve enclose the axial deformation that the purlin roof beam appears in long-time use on the foundation ditch inner wall, cause the problem of support framework damage in the foundation ditch. Correspondingly, the foundation pit supporting system with the deformation compensation device is also provided.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a deformation compensation device for a foundation pit supporting system comprises an inner surrounding purlin and a plurality of deformation compensation structures, wherein the inner surrounding purlin is located between an inner supporting beam and an outer surrounding purlin, the deformation compensation structures are located between the inner surrounding purlin and the outer surrounding purlin, each deformation compensation structure comprises a fixing plate and a butting plate which are vertically arranged at intervals, and a chain transmission mechanism connected between the fixing plate and the butting plate, the fixing plate is connected with the inner surrounding purlin, the butting plate is butted with the outer surrounding purlin, the chain transmission mechanism comprises a first gear, a second gear, a chain in meshing transmission with the first gear and the second gear, and a connecting plate connected between the first gear and the second gear, the first gear is fixed on a first shaft, one end of the connecting plate and the fixing plate are hinged on the first shaft, the second gear is fixed on a second shaft, and the other end of the connecting plate and the butting plate are hinged on the second shaft, the lower extreme of connecting plate is equipped with the riser, be connected with the tilting mechanism that can compress between riser and the fixed plate, tilting mechanism is used for driving the connecting plate upset and then drives the butt board upset to make the butt board keep the state of vertical and peripheral purlin butt.

The application principle of the deformation compensation device is as follows: peripheral purlin axial deformation extrudes the device for the distance between interior periphery is reduced. Under the effect of extrusion force, two pin joint atresss break original a balance, take place the upset trend, order about the chain tooth and change a little to the connecting plate slope leads to tilting mechanism to be compressed, makes the whole device shrink, and supports tightly between inside and outside purlin. Through adjustment tilting mechanism to the upset of drive connecting plate is then driven the butt board upset, so that the butt board keeps the state of vertical and peripheral purlin butt.

When peripheral purlin takes place axial deformation, through the rotation of butt joint seat between the connecting plate, drive the rotation of second gear and order about the chain and rotate, because the meshing transmission of gear and toothed chain is more stable, toothed chain transmission's frictional force is great to play the effect of supporting tightly at the buffering in-process. Thereby through the meshing effect between chain and connecting plate and the two gears to cushion the support to the axial deformation load of peripheral purlin, have the effect of protecting peripheral purlin when peripheral purlin axial deformation.

As a further improvement of the above technical solution:

an anchor plate is fixed on the inner wall surface of the peripheral purlin, a butt joint groove is formed in the inner wall surface of the anchor plate, the butt joint plate is arranged in the butt joint groove in a sliding mode, and a damping spring is arranged between the bottom wall of the butt joint groove and the butt joint plate.

Set up the butt groove on the anchor slab through peripheral purlin inner wall, with butt seat butt on the shock attenuation board of butt inslot, through a cushioning effect of compression spring to the shock attenuation board, when peripheral purlin takes place deformation, play the effect that a reduction load was strikeed.

The shock absorption plate is arranged on the side face, facing the butt joint groove, of the butt joint plate, sliding blocks are arranged at the upper end and the lower end of the shock absorption plate, sliding grooves are formed in the upper side wall and the lower side wall of the butt joint groove, and the sliding blocks are connected in the corresponding sliding grooves in a sliding mode.

The lateral wall at the shock attenuation board passes through slider and spout sliding connection, and is spacing to the slider through the spout, with the shock attenuation board spacing at the butt inslot always, to the tight power of support of shock attenuation board under damping spring's effect, accomodate the shock attenuation board at the butt inslot always.

The wall surface of the damping plate facing the abutting plate is provided with a positioning block, the abutting plate faces the wall surface of the damping plate and is provided with a limiting groove, and the positioning block is arranged in the limiting groove.

The positioning block can be used for quickly abutting the abutting seat and the damping plate under the abutting effect of the limiting groove, and the abutting plate is quickly installed in the abutting groove.

Tilting mechanism includes connecting seat, sleeve pipe, first screw rod, drive block and extension spring, the connecting seat is located on the fixed plate and is located the top of connecting plate, sheathed tube one end articulates on the connecting seat, the sheathed tube other end and the one end threaded connection of first screw rod, extension spring connects between the other end of first screw rod and riser, drive block threaded connection is on first screw rod, just the one end rotation connection that drive block and sleeve pipe are close to the riser.

The threaded rod is contracted by rotating the driving block, the vertical rod is pulled towards one end of the extension spring by tensioning the extension spring, the butt seat is pulled to rotate around the connecting rod by rotating the connecting rod and the vertical rod integrally, the butt seat is adjusted at the horizontal position by adjusting the tension of the extension spring, the butt seat is tightly supported in the butt groove, the threaded rod is rotated by adjusting the driving block to adjust the tension of the extension spring, and the butt seat is overturned around the connecting rod, so that the effect of conveniently installing the butt seat is achieved.

And a driving mechanism is arranged between the fixing plate and the inner wall purlin and used for driving the fixing plate to move towards the direction of the outer wall purlin so that the abutting plate is kept in an abutting state with the outer wall purlin.

The driving mechanism comprises a connecting pipe, a second screw rod and a transmission assembly, the connecting pipe is fixed on the wall surface of the fixing plate facing the inner enclosing purlin, one end of the second screw rod is in threaded connection with the connecting pipe, the other end of the second screw rod is in transmission connection with the transmission assembly, and the transmission assembly is used for driving the second screw rod to rotate.

The screw rod is driven to rotate through the transmission part, the connecting pipe is moved out, the abutting seat is abutted tightly in the abutting groove through the extending distance of the adjusting connecting pipe, the deformation compensation device is abutted tightly between the inner enclosing purlin and the outer purlin, and the deformation compensation device has the effect of adapting to the distance between the inner enclosing purlin and the outer purlin in different directions.

The transmission assembly comprises a central wheel, a plurality of planet wheels in meshing transmission with the inner wall of the central wheel, and a worm in meshing transmission with the outer wall of the central wheel, a plurality of second screws are arranged, and the second screws and the planet wheels are in one-to-one correspondence and are in transmission connection; the central wheel, the planet wheel and the worm are all rotationally connected to a fixing mechanism, and the fixing mechanism is fixed on the inner purlin.

Rotate through the drive worm, drive the planet wheel rotation of meshing under worm wheel ring pivoted effect, rotate through a plurality of planet wheels syntropys and order about the connecting pipe and remove between enclosing purlin and the peripheral purlin, with butt seat butt in the butt inslot, under worm wheel and worm wheel ring meshed effect for worm wheel ring locks in the optional position, has the effect that convenient operation carries out the locking to the screw rod.

The fixing mechanism comprises a mounting plate and a clamping frame, the clamping frame is erected on the side face of the inner enclosing purlin facing the outer enclosing purlin, the mounting plate is clamped in the clamping frame, the second screw and the central wheel are both rotationally connected with the mounting plate, two parallel mounting seats which are arranged at intervals are arranged on the side face of the mounting plate facing the outer enclosing purlin, the worm penetrates through the two mounting seats, and one end of the worm is provided with a driving portion for driving the worm to advance spirally.

Fix in joint frame through the connecting plate and enclose purlin body coupling in with, make the screw rod rotate steadily when rotating the worm-gear ring to and enclose the installation steadily between purlin and the peripheral purlin including will warping the compensation arrangement.

The wall surface of the central wheel facing the inner enclosing purlin is provided with a rotating block, the wall surface of the mounting plate opposite to the central wheel is provided with an annular groove, and the rotating block is rotatably connected in the annular groove.

The worm gear ring rotates along the annular groove through the rotating block, and the worm gear ring is installed on the connecting plate and stably rotates along the connecting plate under the limiting of the rotating block and the annular groove.

As a general utility model design, the utility model also provides a foundation ditch braced system, including setting up the peripheral purlin in fender pile one side to and the interior support beam that props between peripheral purlin, be equipped with foretell deformation compensation arrangement who is used for foundation ditch braced system between interior supporting beam and the peripheral purlin.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a deformation compensation arrangement for foundation ditch braced system through with the anchor slab peg graft under the effect of concrete between enclosing purlin and peripheral purlin, will warp the compensation mechanism adjustment and be vertical state under tilting mechanism's effect, orders about under actuating mechanism's effect and warp the compensation mechanism and remove including will warp between enclosing purlin and the peripheral purlin, has convenient installation deformation compensation arrangement, protects the effect that supports to enclosing purlin when peripheral purlin takes place axial deformation.

2. The utility model discloses a deformation compensation arrangement for foundation ditch braced system, through installing the butt seat on peripheral purlin, when peripheral purlin takes place axial deformation, through the rotation of butt seat between the connecting rod, drive gear rotation and order about the chain rotation, through the chain with the connecting plate and gear one with gear two between the meshing effect to peripheral purlin's axial deformation load cushion support, have the effect of protecting peripheral purlin when peripheral purlin axial deformation;

3. the utility model discloses a deformation compensation arrangement for foundation ditch braced system passes through slider and spout sliding connection at the lateral wall of shock attenuation board, and is spacing to the slider through the spout, with the shock attenuation board spacing in the butt inslot always, to the tight power of support of shock attenuation board under damping spring's effect, accomodate the shock attenuation board at the butt inslot always.

Drawings

Fig. 1 is a schematic view of the whole structure of the double-purlin concrete inner support system with the deformation compensation device.

FIG. 2 is an enlarged partial cross-sectional view of the chain of FIG. 1 taken along the longitudinal axis thereof.

Fig. 3 is a schematic view of the structure between the inner and outer purlins of fig. 1.

Fig. 4 is an enlarged schematic view of a portion a in fig. 1.

Illustration of the drawings: 1. a peripheral purlin; 11. an anchor plate; 12. a butt joint groove; 121. a damping spring; 122. a damper plate; 1221. positioning blocks; 123. a slider; 124. a chute; 2. an inner enclosing purlin; 3. a deformation compensation structure; 31. a fixing plate; 33. a first gear; 34. a connecting plate; 35. a second gear; 36. a chain; 37. a butt joint plate; 371. a limiting groove; 4. a turnover mechanism; 41. a vertical plate; 42. a connecting seat; 43. a sleeve; 44. a first screw; 45. a drive block; 46. an extension spring; 5. a drive mechanism; 51. A connecting pipe; 52. a second screw; 6. a transmission assembly; 61. a planet wheel; 62. a center wheel; 63. a worm; 7. a fixing mechanism; 71. mounting a plate; 72. a mounting seat; 73. a clamping frame; 75. a drive section; 76. rotating the block; 77. an annular groove.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

Example (b):

the embodiment of the application discloses two purlin concrete inner support systems that enclose of taking deformation compensation arrangement. Referring to fig. 1 and 2, the pile protection structure comprises a peripheral purlin 1 and an inner peripheral purlin 2 which are arranged between the arc-shaped support and the inner support, wherein the peripheral purlin 1 is close to the inner wall of a foundation pit and abuts against the outer wall of a pile protection. The shape of peripheral purlin 1 is square, and the material of peripheral purlin 1 adopts the concrete material. The inner enclosing purlin 2 is poured on the inner support through concrete, the inner enclosing purlin 2 is square, and the material of the inner enclosing purlin 2 is made of metal materials. The inner surrounding purlin 2 is formed by pouring anchor plates 11 on the inner walls of the outer surrounding purlins 1 in opposite directions through concrete, the anchor plates 11 are square plates with anchor rods on one sides, and the anchor plates 11 are made of metal materials. A deformation compensation structure 3 is arranged between the two anchor plates 11 to buffer and unload the axial deformation of the peripheral purlin 1. The deformation compensation structure 3 is provided with a turnover mechanism 4, the turnover mechanism 4 is used for adjusting the angle of the deformation compensation structure 3, and the deformation compensation structure 3 is vertically arranged between the two anchor plates 11. One side of the deformation compensation structure 3, which is close to the inner purlin 2, is provided with a driving mechanism 5, and the driving mechanism 5 is used for adjusting the length of the deformation compensation structure 3 and clamping the deformation compensation structure 3 between the two anchor plates 11.

The technical characteristics are applied as follows: through peg graft including with anchor slab 11 under the effect of concrete between enclosing purlin 2 and peripheral purlin 1, adjust to the horizontally state deformation compensation structure 3 under tilting mechanism 4's effect, order about deformation compensation structure 3 to remove under actuating mechanism 5's effect and install including between enclosing purlin 2 and peripheral purlin 1 deformation compensation structure 3, have convenient installation deformation compensation structure 3, protect the effect of supporting to enclosing purlin 1 when peripheral purlin 1 takes place axial deformation.

Referring to fig. 1 and 2, the deformation compensation structure 3 includes a fixed plate 31 and an abutting plate 37 which are vertically arranged at intervals, and a chain transmission mechanism connected between the fixed plate 31 and the abutting plate 37, wherein the fixed plate 31 is connected with the inner peripheral purlin 2, the abutting plate 37 is abutted with the outer peripheral purlin 1, and the chain transmission mechanism includes a first gear 33, a second gear 35, a chain 36 in meshing transmission with the first gear 33 and the second gear 35, and a connecting plate 34 connected between the first gear 33 and the second gear 35.

The side of the fixing plate 31, which faces away from the inner purlin 2, is fixed with a clamping plate 32 extending towards the outer purlin 1, the first gear 33 is fixed on the first shaft, and one end of the connecting plate 34 and the clamping plate 32 are both hinged on the first shaft. The connecting rods 34 are provided two on either side of the catch plate 32. And a hinged plate extending towards the inner enclosing purlin 2 is fixed on the side surface of the abutting plate 37 back to the outer enclosing purlin 1, a second gear 35 is fixed on the second shaft, and the other end of the connecting plate 34 and the hinged plate are hinged on the second shaft.

Connecting plate 34 extends down with articulated one end of hinge plate and forms riser 41, and tilting mechanism 4 is connected between riser 41 and fixed plate 31, and tilting mechanism 4 is used for driving connecting plate 34 upset and then drives butt plate 37 upset to make butt plate 37 keep the state of vertical and peripheral purlin 1 butt.

The catch plate 32 is U-shaped, and the material of the catch plate 32, the first gear 33, the abutment plate 37, the second gear 35 and the chain 36 is a metal material.

The technical characteristics are applied as follows: through installing butt plate 37 on peripheral purlin 1, when peripheral purlin 1 takes place axial deformation, through butt plate 37 rotation between connecting rod 34, drive second gear 35 and rotate and order about chain 36 and rotate, through chain 36 and connecting rod 34 and first gear 33 and second gear 35 between the meshing effect to peripheral purlin 1's axial deformation load cushion the support, have and carry out the protection to peripheral purlin 1 when peripheral purlin 1 axial deformation.

Referring to fig. 1 and 2, the anchor plate 11 on the inner wall of the peripheral purlin 1 is provided with a butting groove 12, and a damping spring 121 is welded at the bottom of the butting groove 12. The material of the damper spring 121 is a metal material. The damping plate 122 is welded at one end, far away from the bottom of the abutting groove 12, of the damping spring 121, the damping plate 122 is a square plate, and the damping plate 122 is made of a metal material. The abutting plate 37 abuts on the damper plate 122, and the damper spring 121 is always in a pressed state.

The technical scheme is applied as follows: offer butt groove 12 on the anchor slab 11 through on the peripheral purlin 1 inner wall, with butt plate 37 butt on the shock attenuation board 122 in butt groove 12, through damping spring 121 to a cushioning effect of shock attenuation board 122, when peripheral purlin 1 takes place deformation, play a effect that reduces the load and assault.

Referring to fig. 1 and 2, a positioning block 1221 is welded to the damping plate 122. The positioning block 1221 is square, and the positioning block 1221 is made of a metal material. The abutting plate 37 has a limiting groove 371 on a side wall thereof near the abutting groove 12. The positioning block 1221 is clamped in the limiting groove 371.

Referring to fig. 1 and 2, a slider 123 is welded to a side wall of the damper plate 122, a sliding groove 124 is formed in a side wall of the contact groove 12, and the slider 123 is in contact with the sliding groove 124. The slider 123 is square, and the slider 123 is made of metal. The slider 123 moves along the sliding groove 124, so that the damping plate 122 moves more stably, and the damping plate 122 is limited in the abutting groove 12 by stable movement.

Referring to fig. 2 and 3, a tilting mechanism 4 is provided on the deformation compensation structure 3 to adjust the angle of the deformation compensation structure 3. The tilting mechanism 4 comprises a vertical bar 41 welded perpendicularly to the pivot end of the connecting bar 34 near the abutment plate 37. The vertical rod 41 is a square rod, and the vertical rod 41 is made of a metal material. Connecting seats 42 are welded to the two sides of the clamping plate 32 on the fixing plate 31, and sleeves 43 are hinged to the connecting seats 42. The shape of connecting seat 42 is U-shaped, and the material of connecting seat 42 adopts metal material. The sleeve 43 is a cylindrical tube with a thread formed on the inner wall, and the sleeve 43 is made of a metal material. A threaded rod 44 is threaded into the sleeve 43. The threaded rod 44 is in the form of a cylindrical rod with a thread path. The threaded rod 44 is made of a metal material. An extension spring 46 is welded on the side walls of the threaded rod 44 and the bottom end of the vertical rod 41, and the extension spring 46 is made of metal materials. The outer wall of the threaded rod 44 is threaded with a driving block 45. The driving block 45 is shaped as a circular ring plate, and the driving block 45 is made of a metal material. The outer wall of the driving block 45 is provided with a placing groove which is convenient to operate.

The technical scheme is applied as follows: contract threaded rod 44 through rotating drive block 45, through the taut pulling of going to extension spring 46 with montant 41 of extension spring 46, rotate around connecting rod 34 with montant 41 an organic whole through connecting rod 34 with the pulling of butt plate 37, adjust butt plate 37 in the horizontally position through the tightening force of adjusting extension spring 46, support butt plate 37 tightly in butt groove 12, rotate threaded rod 44 through adjusting drive block 45 and adjust the tightening force of extension spring 46 and overturn butt plate 37 around connecting rod 34, the effect that has convenient installation butt plate 37

Referring to fig. 3, the driving mechanism 5 includes a connection pipe 51 and a second screw 52, and the connection pipe 51 is welded to an end of the fixing plate 31 remote from the connection rod 34. The inner wall of the connection pipe 51 is formed with a thread. The second screw 52 is screwed to the connection pipe 51. The material of the connection pipe 51 is a metal material. The material of the second screw 52 is a metal material. The end of the second screw 52 is provided with the transmission assembly 6, and the number of the connection pipes 51 is three.

Above-mentioned technical scheme uses as follows, orders about second screw rod 52 through drive assembly 6 and rotates, removes connecting pipe 51, and the reach out through adjusting connecting pipe 51 supports butt plate 37 tightly in butt groove 12 for deformation compensation structure 3 supports tightly between enclosing purlin 2 and peripheral purlin 1, has the effect of enclosing purlin 2 and the distance between the peripheral purlin 1 in adapting to the difference with deformation compensation structure 3.

Referring to fig. 3 and 4, the transmission assembly 6 includes planet wheels 61 and a worm wheel ring 62, wherein the inner wall of the worm wheel ring 62 is provided with teeth, and the worm wheel ring 62 is engaged with the planet wheels 61. The planet wheels 61 are gears, and the material of the planet wheels 61 is a metal material. The outer wall of the worm gear ring 62 is engaged with a worm 63, the worm 63 is made of metal materials, and the planet gear 61 is provided with a fixing mechanism 7 connected with the inner wall of the inner periphery purlin 2.

The technical scheme is applied as follows: rotate through drive worm 63, drive the planet wheel 61 rotation of meshing under worm wheel ring 62 pivoted effect, rotate through three planet wheel 61 syntropy and order about connecting pipe 51 to remove between interior peripheral purlin 2 and peripheral purlin 1, with butt joint board 37 butt in butt joint groove 12, under worm 63 and worm wheel ring 62 meshing's effect for worm wheel ring 62 is in the locking of optional position, has the effect that convenient operation carried out locking to second screw rod 52.

Referring to fig. 3 and 4, the fixing mechanism 7 includes a connecting plate 71, and the planetary gear 61 rotates on the connecting plate 71. The shape of the connecting plate 71 is square, and the material of the connecting plate 71 is a metal material. Clamping frames 73 are welded on the anchor plates 11 of the inner enclosing purlin 2, the connecting plates 71 are inserted into the clamping frames 73, and the connecting plates 71 are fixedly connected with the anchor plates 11 through studs 74. The connecting plate 71 is fixedly connected with a mounting block 72, the mounting block 72 is square, and the mounting block 72 is made of metal materials. The worm 63 is rotatably connected between two mounting blocks 72. One end of the worm 63 is rotatably inserted through the mounting block 72, and a driving portion 75 is welded to the insertion end of the worm 63. The driving portion 75 has a T-shape, and the driving portion 75 is made of a metal material. The side wall of the worm wheel ring 62 close to the inner purlin 2 is welded with a rotating block 76. The turning block 76 is a circular ring block with a T-shaped section, and the turning block 76 is made of a metal material.

Referring to fig. 2, an annular groove 77 is formed in the connecting plate 71, and the rotating block 76 rotates along the annular groove 77.

The implementation principle of the double-surrounding purlin concrete inner support system with the deformation compensation structure 3 in the embodiment of the application is as follows: when keeping away from one side of foundation ditch inner wall with peripheral purlin 1 butt at the fender pile, through with install on the inner wall of peripheral purlin 2 at inner peripheral purlin 1 under the effect of concrete anchor slab 11 through the stock, through installing connecting plate 71 on the inner wall of inner peripheral purlin 2, order about first screw rod 44 through rotating drive block 45 and rotate the angle of adjusting butt joint board 37, processing butt joint board 37 butt joint inslot 12 on anchor slab 11, order about worm wheel ring 62 through rotating worm 63 and rotate, drive planet wheel 61 and rotate, thereby order about second screw rod 52 and rotate and drive connecting pipe 51 and remove, further with butt joint board 37 butt joint in butt joint inslot 12, when peripheral purlin 1 takes place deformation, reduce the axial deformation of peripheral purlin 1 through damping spring 121 and deformation compensation structure 3, protect peripheral purlin 1.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims (10)

1. A deformation compensation device for a foundation pit supporting system comprises an inner surrounding purlin (2) located between an inner supporting beam and an outer surrounding purlin (1) and a plurality of deformation compensation structures (3) located between the inner surrounding purlin (2) and the outer surrounding purlin (1), and is characterized in that the deformation compensation structures (3) comprise fixing plates (31) and abutting plates (37) which are vertically arranged at intervals and chain transmission mechanisms connected between the fixing plates (31) and the abutting plates (37), the fixing plates (31) are connected with the inner surrounding purlins (2), the abutting plates (37) are abutted to the outer surrounding purlins (1), the chain transmission mechanisms comprise first gears (33), second gears (35), chains (36) meshed with the first gears (33) and the second gears (35) for transmission, and connecting plates (34) connected between the first gears (33) and the second gears (35), the utility model discloses a supporting structure, including connecting plate (34), first gear (33), second gear (35), butt joint board (37), tilting mechanism (4) are used for driving connecting plate (34) upset and then drive butt joint board (37) upset to make butt joint board (37) keep the state of vertical and peripheral purlin (1) butt.

2. The deformation compensation device for the foundation pit supporting system according to claim 1, wherein an anchor plate (11) is fixed on the inner wall surface of the peripheral purlin (1), an abutting groove (12) is formed in the inner wall surface of the anchor plate (11), the abutting plate (37) is slidably arranged in the abutting groove (12), and a damping spring (121) is arranged between the bottom wall of the abutting groove (12) and the abutting plate (37).

3. The deformation compensation device for the foundation pit supporting system according to claim 2, wherein a damping plate (122) is arranged on a side surface of the abutting plate (37) facing the abutting groove (12), sliding blocks (123) are arranged at upper and lower ends of the damping plate (122), sliding grooves (124) are formed in upper and lower side walls of the abutting groove (12), and the sliding blocks (123) are slidably connected in the corresponding sliding grooves (124).

4. The deformation compensation device for the foundation pit supporting system according to claim 3, wherein a positioning block (1221) is arranged on the wall surface of the damping plate (122) facing the abutting plate (37), a limiting groove (371) is formed on the wall surface of the abutting plate (37) facing the damping plate (122), and the positioning block (1221) is arranged in the limiting groove (371).

5. The deformation compensation device for the foundation pit supporting system according to any one of claims 1-4, wherein the turnover mechanism (4) comprises a connecting seat (42), a sleeve (43), a first screw rod (44), a driving block (45) and a tension spring (46), the connecting seat (42) is arranged on the fixing plate (31) and is positioned above the connecting plate (34), one end of the sleeve (43) is hinged on the connecting seat (42), the other end of the sleeve (43) is in threaded connection with one end of the first screw rod (44), the tension spring (46) is connected between the other end of the first screw rod (44) and the vertical plate (41), the driving block (45) is in threaded connection with the first screw rod (44), and the driving block (45) is in rotational connection with one end of the sleeve (43) close to the vertical plate (41).

6. The deformation compensation device for the foundation pit supporting system according to any one of claims 1-4, wherein a driving mechanism (5) is arranged between the fixing plate (31) and the inner purlin (2), and the driving mechanism (5) is used for driving the fixing plate (31) to move towards the outer purlin (1) so as to enable the abutting plate (37) to be kept in an abutting state with the outer purlin (1).

7. The deformation compensation device for the foundation pit supporting system according to claim 6, wherein the driving mechanism (5) comprises a connecting pipe (51), a second screw rod (52) and a transmission assembly (6), the connecting pipe (51) is fixed on the wall surface of the fixing plate (31) facing the inner enclosing purlin (2), one end of the second screw rod (52) is in threaded connection with the connecting pipe (51), the other end of the second screw rod (52) is in transmission connection with the transmission assembly (6), and the transmission assembly (6) is used for driving the second screw rod (52) to rotate.

8. The deformation compensation device for the foundation pit supporting system according to claim 7, wherein the transmission assembly (6) comprises a central wheel (62), a plurality of planet wheels (61) in meshing transmission with the inner wall of the central wheel (62), and a worm (63) in meshing transmission with the outer wall of the central wheel (62), the second screw rods (52) are provided in plurality, and the second screw rods (52) are in one-to-one correspondence with the planet wheels (61) and are in transmission connection; the central wheel (62), the planet wheel (61) and the worm (63) are all rotationally connected to the fixing mechanism (7), and the fixing mechanism (7) is fixed on the inner purlin (2).

9. The deformation compensation device for the foundation pit supporting system according to claim 8, wherein the fixing mechanism (7) comprises a mounting plate (71) and a clamping frame (73), the clamping frame (73) is arranged on the side surface of the inner enclosing purlin (2) facing to the outer enclosing purlin (1), the mounting plate (71) is clamped in the clamping frame (73), the second screw (52) and the central wheel (62) are rotatably connected with the mounting plate (71), two parallel mounting seats (72) arranged at intervals are arranged on the side surface of the mounting plate (71) facing to the outer enclosing purlin (1), the worm (63) penetrates through the two mounting seats (72), and a driving portion (75) for driving the worm (63) to spirally advance is arranged at one end of the worm (63).

10. A foundation pit bracing system comprising peripheral purlins (1) arranged at one side of a fender pile, and inner support beams supported between the peripheral purlins, characterized in that a deformation compensation device for a foundation pit bracing system according to any one of claims 1 to 9 is arranged between the inner support beams and the peripheral purlins (1).

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