Device suitable for hard geological open caisson cast-in-place construction

Abstract

The utility model provides a device suitable for hard geology open caisson cast-in-place construction, which comprises a hopper arranged at the top of an open caisson and a template unit arranged on the inner side of the open caisson, a moving unit is arranged at the bottom of the hopper, the moving unit is in sliding connection with the top of the open caisson, and the template unit comprises a side plate and an inclined plate. The side plate, the inclined plate and the geological side wall are matched to form a pouring space of the open caisson, and the hopper completes filling of the pouring space through the discharging pipe. The hopper is ingenious in design, the position of the hopper is flexibly changed according to needs in the construction process, safety and high efficiency of pouring are guaranteed, meanwhile, the hopper is stably installed, and timely supplement of concrete is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of working well construction, in particular to a device suitable for cast-in-situ construction of caissons in hard geology. Background Art

[0002] Cast-in-situ caisson construction is a common deep foundation construction method, mainly used for engineering projects such as bridges, hydraulic structures, and underground structures that require deep foundations. Caisson construction needs to be adjusted according to the changes in the construction environment. For construction in hard geological soil, the process of preloading the caisson becomes very difficult. Restricted by the geological structure, it is very difficult for the caisson to sink under its own weight. Different from the conventional caisson pouring sequence, it needs to be poured from top to bottom. As the depth of the working well increases, the angle and depth of the hopper need to be adjusted, and the risk is very high during the process of the crane hoisting the hopper, and there are safety hazards in the construction.

[0003] The Chinese patent document CN 213772982 U records a self-opening aggregate hopper device for caissons, but this hopper cannot change its working position as needed; the Chinese patent document CN 111021358 A records a 360-degree rotating chute for caisson concrete pouring, but this hopper needs to install a fixed scaffold matching the diameter of the caisson wellhead, the construction is inconvenient, the installation and disassembly are troublesome, there are defects in use, and improvement is needed. Summary of the Utility Model

[0004] The utility model provides a device suitable for cast-in-situ construction of caissons in hard geology, and solves the problem that there is a great safety risk in cast-in-situ pouring of the hopper by crane hoisting as the excavation depth of the working well increases.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a device suitable for cast-in-situ construction of caissons in hard geology, including a hopper arranged on the top of the caisson and a formwork unit arranged on the inner side of the caisson. A moving unit is arranged at the bottom of the hopper, and the moving unit is slidably connected to the top of the caisson. The formwork unit includes side plates and inclined plates, and the side plates, inclined plates and the geological side wall cooperate to form a pouring space of the caisson. The hopper fills the pouring space through a discharge pipe.

[0006] In a preferred solution, the caisson includes a plurality of cast-in-situ layer rings arranged from top to bottom. A capping beam is arranged on the top of the uppermost cast-in-situ layer ring, and an inclined surface is arranged on the inner side of the cast-in-situ layer ring.

[0007] In a preferred solution, the moving unit includes a base, and a plurality of first rollers are arranged at the bottom of the base. The first rollers are slidably connected to the capping beam.

[0008] In a preferred solution, a first through hole is arranged on the top of the base. An installation frame is arranged on the first roller, and the installation frame passes through the first through hole and is connected to the base through a nut.

[0009] In a preferred embodiment, sliding plates are symmetrically and slidably connected to the outside of the base. Second rollers are provided on the lower sides of the sliding plates, and the second rollers are slidably connected to the side walls of the capping beam.

[0010] In a preferred embodiment, a fourth through-hole and a fifth through-hole are horizontally and penetratingly provided on the sliding plate. The second roller is arranged in the fifth through-hole through a mounting bracket. A bolt is arranged in the fourth through-hole. A chute is provided on the side wall of the base. The mounting bracket and the bolt are respectively located in the chute. A synchronous plate is sleeved on the mounting bracket and the bolt. The bolt and the mounting bracket are connected to the synchronous plate through nuts.

[0011] In a preferred embodiment, a plurality of sleeves are evenly distributed on the top of the base. The second through-hole penetrates through the sleeves and the base. The adjusting rod is rotatably arranged in the sleeve. A second threaded hole is provided on the upper part of the sliding plate. The adjusting rod is threadedly connected to the second threaded hole. The sliding plate fits on the outside of the base.

[0012] In a preferred embodiment, a counterbore is provided on the lower side of the second through-hole. First threaded holes are symmetrically provided on the sleeve. An annular groove is provided on the side of the adjusting rod close to the limiting disc. The locking pin is threadedly connected to the first threaded hole. The end of the locking pin abuts against the side wall of the annular groove.

[0013] In a preferred embodiment, a sixth through-hole is provided at the top of the adjusting rod. The inserting rod is arranged in the sixth through-hole. A holding rod is provided at one end of the inserting rod. A top disc is provided at the top of the holding rod.

[0014] In a preferred embodiment, the hopper is connected to the moving unit through a supporting platform. A plurality of third through-holes are provided on the top of the base. A plurality of legs are provided at the lower part of the supporting platform. Round rods are provided at the bottoms of the legs, and the round rods are arranged in the third through-holes.

[0015] The beneficial effects of the present utility model are as follows: By installing a moving unit on the capping beam of the caisson, the moving unit supports the supporting platform, a hopper is installed on the supporting platform, and a discharge pipe is installed on one side of the hopper. As the depth of the working shaft excavation changes, the length of the discharge pipe is adjusted, so as to ensure that the hopper supplies materials in all directions around the caisson, and at the same time ensure the convenience of loading concrete at the caisson wellhead. The overall construction is safe and convenient, ensuring that the top of the caisson wellhead is completely open, ensuring the overall construction vision, and at the same time avoiding the pressure on other components of the soil near the caisson wellhead. It is more stable in use. By adjusting the position of the sliding plate on the base, the height of the second roller can be conveniently changed, and at the same time, the angle of the first roller can be changed as required, so as to ensure the smooth rotation of the whole around the caisson. The side plates and the inclined plates of the formwork unit cooperate with each other to form a pouring space with the side wall of the soil body, providing stable and reliable formwork support for the construction of the cast-in-place layer ring. At the same time, the side plates are convenient to install and firmly fixed, ensuring the high efficiency of the construction. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a construction schematic diagram of the present utility model;

[0018] Figure 2 is Figure 1 a front view schematic diagram of

[0019] Figure 3 is Figure 1 a top view schematic diagram of

[0020] Figure 4 is Figure 3 a sectional view taken along the line A-A of

[0021] Figure 5 is Figure 3 a sectional view taken along the line B-B of

[0022] Figure 6 It is an installation structure diagram of the hopper and the moving unit of the present invention;

[0023] Figure 7 is Figure 6 an exploded structure diagram of

[0024] Figure 8 is Figure 7 an exploded structure schematic diagram of the moving unit of Figure 1 ;

[0025] Figure 9 is Figure 7 an exploded structure schematic diagram of the moving unit of Figure 2 ;

[0026] Figure 10 is Figure 9 a magnified schematic diagram at position C of

[0027] In the figure: open caisson 1; cast-in-place layer ring 101; capping beam 102; inclined plane 103; hopper 2; supporting platform 3; support leg 301; round rod 302; moving unit 4; base 401; slide plate 402; first through hole 403; sleeve 404; second through hole 405; counterbore 406; chute 407; groove 408; first threaded hole 409; third through hole 410; second threaded hole 411; fourth through hole 412; fifth through hole 413; adjusting rod 414; annular groove 415; limit disc 416; locking pin 417; sixth through hole 418; holding rod 419; inserting rod 420; top disc 421; bolt 422; synchronous plate 423; formwork unit 5; side plate 501; inclined plate 502; support rod 503; first ejector rod 504; second ejector rod 505; dowel 506; first hinge seat 507; second hinge seat 508; bottom plate 509; third threaded hole 510; waist-shaped hole 511; screw 512; discharge pipe 6; first roller 7; second roller 8; nut 9; mounting bracket 10. Detailed implementation mode

[0028] As Figures 1-5 shown in the figure, a device suitable for the cast-in-place construction of open caissons in hard geological formations includes a hopper 2 arranged at the top of the open caisson 1 and a formwork unit 5 arranged inside the open caisson 1. A moving unit 4 is provided at the bottom of the hopper 2, and the moving unit 4 is slidably connected to the top of the open caisson 1. The formwork unit 5 includes a side plate 501 and an inclined plate 502. The side plate 501, the inclined plate 502 and the geological side wall cooperate to form a pouring space for the open caisson 1, and the hopper 2 fills the pouring space through a discharge pipe 6.

[0029] The inclined plate 502 is arranged at the top of the side plate 501. The side plate 501 is hinged to the bottom plate 509 through a second hinge seat 508. A support rod 503 is provided on the bottom plate 509. A first ejector rod 504 is telescopically arranged inside the support rod 503. The first ejector rod 504 is hinged to the side plate 501 through a first hinge seat 507. The bottom plate 509 is fixed to the ground through a plurality of dowels 506. A second ejector rod 505 is also hinged to the second hinge seat 508. A waist-shaped hole 511 is provided on the second ejector rod 505, and a plurality of third threaded holes 510 are provided on the first ejector rod 504. Screws 512 are inserted into the waist-shaped hole 511 and the third threaded holes 510.

[0030] The inclined plate 502 is inclined towards the center side of the open caisson 1, thus ensuring sufficient opening during pouring, ensuring that the discharge pipe 6 of the hopper 2 can better fill the pouring space. At the same time, the side plate 501 is also inclined towards the center side of the open caisson 1. Through the above settings, an inclined surface 103 of the cast-in-place layer ring 101 can be formed after pouring. The upper cast-in-place layer ring 101, the side plate 501 and the inclined plate 502 cooperate to provide sufficient pouring channels for the construction process, ensuring the stability of the construction. Since the geology of the construction area is very hard, the conventional method of applying pre-pressure on the top of the cast-in-place layer ring for sinking is not applicable to the construction of this project. It is necessary to excavate layer by layer from top to bottom and carry out in-situ casting at the excavation site, that is, the position of the in-situ casting increases with the increase of the depth of the open caisson. The traditional method of using a crane to hoist the hopper 2 and then lower the hopper 2 to the position to be poured will not only occupy the space inside the open caisson, but also there are greater safety risks due to incomplete fixation during hoisting. This solution completely avoids the above problems. According to the change of the angle of the pouring point, the position of the moving unit 4 is changed, thereby changing the position of the hopper 2. The discharge pipe 6 on one side of the hopper 2 is very convenient to operate. During use, only the discharge pipe 6 needs to be lengthened according to the depth requirement. The lengthening is quickly installed by using a hoop, which is convenient and stable to use.

[0031] In a preferred solution, the open caisson 1 includes a plurality of cast-in-place layer rings 101 arranged from top to bottom. A capping beam 102 is provided at the top of the uppermost cast-in-place layer ring 101, and an inclined surface 103 is provided inside the cast-in-place layer ring 101.

[0032] The capping beam 102 provides a good support foundation for the moving unit, and at the same time limits the moving range, which is also more convenient for the installation of the moving unit 4. As the depth of the open caisson 1 increases, the number of cast-in-place layer rings 101 also increases accordingly. The inclined surface 103 of the upper cast-in-place layer ring 101 and the formwork unit 5 cooperate to provide a large enough pouring opening.

[0033] As Figures 6-7 In, in a preferred solution, the moving unit 4 includes a base 401. A plurality of first rollers 7 are provided at the bottom of the base 401, and the first rollers 7 are slidably connected to the capping beam 102.

[0034] By changing the angle of the first rollers 7, the plurality of first rollers 7 cooperate with each other to rotate more smoothly in a fixed circle around the axis of the open caisson 1 on the capping beam 102.

[0035] As Figures 8-9 In, in a preferred solution, a first through hole 403 is provided at the top of the base 401. An installation frame 10 is provided on the first roller 7, and the installation frame 10 passes through the first through hole 403. The installation frame 10 is connected to the base 401 by a nut 9.

[0036] Adjust the tightness of the mounting bracket 10 and the nut 9 to change the position of the first roller 7.

[0037] In a preferred embodiment, sliding plates 402 are symmetrically and slidably connected to the outer side of the base 401. Second rollers 8 are provided on the lower sides of the sliding plates 402, and the second rollers 8 are slidably connected to the side walls of the capping beam 102.

[0038] The two side plates of the base 401 are slightly higher than the top of the capping beam 102, facilitating overall installation. Then, adjust the sliding plates 402 to the lowest point, and the second rollers 8 are in contact with the inner and outer side walls of the capping beam 102, playing a role in protecting the base 401. After adjusting to the appropriate position, lock it to ensure that the rolling axis of the second roller 8 is parallel to the axis of the caisson 1, making the movement smoother.

[0039] As Figure 10 In the figure, in a preferred embodiment, a fourth through-hole 412 and a fifth through-hole 413 are provided in parallel and penetrate through the sliding plate 402. The second roller 8 is passed through the fifth through-hole 413 through the mounting bracket 10. A bolt 422 is passed through the fourth through-hole 412. A chute 407 is provided on the side wall of the base 401. The mounting bracket 10 and the bolt 422 are respectively located in the chute 407. A synchronizing plate 423 is sleeved on the mounting bracket 10 and the bolt 422. The bolt 422 and the mounting bracket 10 are connected to the synchronizing plate 423 through a nut 9. A groove 408 is provided inside the chute 407, and the synchronizing plate 423 is attached to the inside of the groove 408.

[0040] The moving range of the bolt 422 on the sliding plate 402 is smaller than the height of the chute 407, ensuring the accuracy of the relative movement between the sliding plate 402 and the base 401, and only making adjustments in the vertical direction. At the same time, the position of the second roller 8 can be ensured to be firmly installed through the synchronizing plate 423, and the movement process is more stable. The synchronizing plate 423 is attached to the inside of the groove 408, making better use of the space below the base 401 and achieving better results.

[0041] In a preferred embodiment, a plurality of sleeves 404 are evenly distributed on the top of the base 401. A second through-hole 405 penetrates through the sleeves 404 and the base 401. An adjusting rod 414 is rotatably arranged in the sleeve 404. A second threaded hole 411 is provided on the upper part of the sliding plate 402. The adjusting rod 414 is threadedly connected to the second threaded hole 411, and the sliding plate 402 is attached to the outer side of the base 401.

[0042] The degree of freedom of the adjusting rod 414 is restricted by the sleeve 404, and at the same time, the accuracy during rotation is high. By changing the rotation angle of the adjusting rod 414, the position of the sliding plate 402 can be conveniently and flexibly changed, making it easy to use.

[0043] In the preferred embodiment, a countersunk hole 406 is provided on the lower side of the second through hole 405, a first threaded hole 409 is symmetrically provided on the sleeve 404, an annular groove 415 is provided on the side of the adjusting rod 414 close to the limit plate 416, a locking pin 417 is threadedly connected to the first threaded hole 409, and the end of the locking pin 417 rests against the side wall of the annular groove 415.

[0044] The locking pin 417 and the limiting plate 416 cooperate with each other to ensure the stability of the position of the adjusting rod 414 itself, while ensuring smooth and convenient rotation.

[0045] In a preferred embodiment, a sixth through hole 418 is provided at the top of the adjusting rod 414 , the insert rod 420 is inserted into the sixth through hole 418 , a gripping rod 419 is provided at one end of the insert rod 420 , and a top plate 421 is provided at the top of the gripping rod 419 .

[0046] It is convenient for the operator to hold the gripping rod 419, thereby driving the adjusting rod 414 to rotate, and the inserting rod 420 can act as a lever, thereby improving the efficiency of adjustment and being more convenient to use.

[0047] In the preferred embodiment, the hopper 2 is connected to the mobile unit 4 through the supporting platform 3, a plurality of third through holes 410 are provided on the top of the base 401, a plurality of legs 301 are provided on the lower part of the supporting platform 3, a round rod 302 is provided on the bottom of the legs 301, the round rod 302 is passed through the third through holes 410, the round rod 302 is fixed to the base 401 by the nut 9, and the round rod 302 and the nut 9 are threadedly connected.

[0048] The supporting platform 3 and the mobile unit 4 are easy to install and disassemble, and the locking is stable, which ensures that the center of gravity of the hopper 2 is roughly coplanar with the center of gravity of the mobile unit 4, thereby avoiding the stability of unbalanced force on one side and achieving better use effect.

[0049] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A device suitable for cast-in-place construction of caissons in hard geology, characterized by: The invention comprises a hopper (2) arranged at the top of a caisson (1) and a template unit (5) arranged inside the caisson (1); a moving unit (4) is arranged at the bottom of the hopper (2); the moving unit (4) is slidably connected to the top of the caisson (1); the template unit (5) comprises a side plate (501) and an inclined plate (502); the side plate (501), the inclined plate (502) and the geological side wall cooperate to form a casting space of the caisson (1); the hopper (2) completes the filling of the casting space through a discharge pipe (6).

2. The device for cast-in-place construction of caisson in hard geological conditions according to claim 1 is characterized in that: The caisson (1) comprises a plurality of cast-in-place layer rings (101) arranged from top to bottom, a cap beam (102) being arranged on the top of the uppermost cast-in-place layer ring (101), and an inclined surface (103) being arranged on the inner side of the cast-in-place layer ring (101).

3. The device suitable for cast-in-place construction of hard geological caissons according to claim 2 is characterized in that: The mobile unit (4) comprises a base (401), a plurality of first rollers (7) are provided at the bottom of the base (401), and the first rollers (7) are slidably connected to the crown beam (102).

4. The device for cast-in-place construction of caisson in hard geological conditions according to claim 3 is characterized by: A first through hole (403) is provided on the top of the base (401), a mounting frame (10) is provided on the first roller (7), the mounting frame (10) is inserted into the first through hole (403), and the mounting frame (10) is connected to the base (401) via a nut (9).

5. The device suitable for cast-in-place construction of hard geological caissons according to claim 3 is characterized in that: The outer side of the base (401) is symmetrically slidably connected to a slide plate (402), a second roller (8) is provided on the lower side of the slide plate (402), and the second roller (8) is slidably connected to the side wall of the crown beam (102).

6. The device for cast-in-place construction of caisson in hard geological conditions according to claim 5 is characterized by: A fourth through hole (412) and a fifth through hole (413) are parallelly penetrated on the slide plate (402); the second roller (8) is inserted into the fifth through hole (413) via the mounting frame (10); a bolt (422) is inserted into the fourth through hole (412); a slide groove (407) is provided on the side wall of the base (401); the mounting frame (10) and the bolt (422) are respectively located in the slide groove (407); a synchronous plate (423) is sleeved on the mounting frame (10) and the bolt (422); and the bolt (422) and the mounting frame (10) are connected to the synchronous plate (423) via a nut (9).

7. The device for cast-in-place construction of caisson in hard geological conditions according to claim 5 is characterized by: A plurality of sleeves (404) are evenly distributed on the top of the base (401); a second through hole (405) is provided through the sleeve (404) and the base (401); an adjusting rod (414) is rotatably provided in the sleeve (404); a second threaded hole (411) is provided on the upper portion of the slide plate (402); the adjusting rod (414) and the second threaded hole (411) are threadedly connected; and the slide plate (402) is fitted on the outer side of the base (401).

8. The device for cast-in-place construction of caisson in hard geological conditions according to claim 7 is characterized by: A countersunk hole (406) is provided at the lower side of the second through hole (405), a first threaded hole (409) is symmetrically provided on the sleeve (404), an annular groove (415) is provided on the side of the adjustment rod (414) close to the limit plate (416), a locking pin (417) is threadedly connected to the first threaded hole (409), and an end of the locking pin (417) abuts against a side wall of the annular groove (415).

9. The device for cast-in-place construction of caisson in hard geological conditions according to claim 8 is characterized by: A sixth through hole (418) is provided at the top of the adjusting rod (414), the insertion rod (420) is inserted into the sixth through hole (418), a holding rod (419) is provided at one end of the insertion rod (420), and a top plate (421) is provided at the top of the holding rod (419).

10. The device suitable for cast-in-place construction of caisson in hard geological conditions according to claim 3 is characterized by: The hopper (2) is connected to the mobile unit (4) via a supporting platform (3); a plurality of third through holes (410) are provided on the top of the base (401); a plurality of supporting legs (301) are provided at the bottom of the supporting platform (3); round rods (302) are provided at the bottom of the supporting legs (301); and the round rods (302) are inserted into the third through holes (410).

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