Ultra-deep foundation pit concrete pouring equipment and construction method thereof

Abstract

The invention discloses ultra-deep foundation pit concrete pouring equipment and a construction method thereof.The ultra-deep foundation pit concrete pouring equipment comprises a transfer hopper installed on a ring beam on the lower portion of an enclosure structure of an ultra-deep foundation pit, and the transfer hopper is connected to a pump pipe of a concrete automobile pump; one end of the material conveying hose is connected to the discharge hole of the transfer hopper; a bearing plate is formed on one side portion of a base on the enclosure structure, one end of the cantilever frame is rotatably connected to one side portion of the base, the bearing plate is supported at one end of the cantilever frame, and a locking piece is installed at one end of the cantilever frame; the driving structure comprises a plurality of electric winding drums and slings which are installed on the ring beam, the electric winding drums are connected to one ends of the slings respectively, the middles of the slings are wound around the other ends of the cantilever frames, and the other ends of the slings are connected to the middle and the other end of the conveying hose respectively. The problems that during deep foundation pit concrete pouring construction, when a concrete pump truck is adopted for pouring, the free falling height of concrete is large, and concrete segregation is likely to happen are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to ultra-deep foundation pit concrete pouring equipment and a construction method thereof. Background Art

[0002] Concrete is widely used as a building material in underground engineering construction. However, due to the working condition that the casting surface is generally lower than the ground, the construction needs to solve the problem of vertical transportation of concrete from the ground to the casting surface and the need for the drop points to cover the entire casting range. As the current underground space development is mainly concentrated in the middle and shallow layers (depth ≤ 40m), the relevant concrete casting equipment and technology can only meet the construction needs of the above depth.

[0003] At present, the most commonly used technical solution is to use a concrete pump truck for pouring. This equipment has multiple sections of bendable boom pipes, which form a channel for concrete to be transported downward by unfolding the boom pipes. The vehicle-mounted pump is used to suck the concrete into the pump cylinder, and then the hydraulic system provides power to transport the concrete along the boom pipes, solving the problem of vertical transportation of concrete from the ground to the foundation pit. Combined with the plane-rotatable main boom pipe and the adjustment of the bending angle of each section of the boom pipe, it ensures that the bottom drop port can cover a certain pouring range.

[0004] In some special working conditions, a fixed concrete pump can also be used in conjunction with a concrete placing boom for pouring. The fixed pump is generally installed at the wellhead and connected to the placing boom under the foundation pit through a fixed high-pressure pump pipe. The entire system pressurizes the concrete through the fixed pump body and transports it along the high-pressure pump pipe to the placing boom, and the placing boom is used to place the concrete within its pouring radius.

[0005] The existing technology can only meet the needs of concrete pouring in medium and shallow underground projects, but is not applicable to large-volume and continuous concrete pouring in ultra-deep foundation pits.

[0006] The length of the pump pipe of the existing automobile pump on the market generally does not exceed 62m. When used in underground projects, the main boom needs to maintain a certain upward angle and each section of the wall frame pipe needs to be bent to a certain extent (to ensure the overall stability of the concrete automobile pump and avoid the free fall of concrete along the boom pipe, which will cause the concrete performance loss). The effective operating depth does not exceed 45m, and adjusting the position of the drop point under this working condition will further shorten its operating depth, which will lead to the inability to meet the construction requirements of ultra-deep foundation pits in terms of depth or pouring range. When a fixed pump is used in conjunction with a concrete placing boom for underground engineering concrete pouring, the applicable depth of vertical transportation of concrete is generally not more than 30m, otherwise there will be problems such as concrete segregation and pipe blockage. In order to ensure the stability of the concrete placing boom, a special base is generally required for it, which has poor applicability in underground engineering construction. Summary of the invention

[0007] In order to overcome the defects of the prior art, an ultra-deep foundation pit concrete pouring equipment and a construction method thereof are provided to solve the problem that when pouring concrete in deep foundation pits, concrete free fall height is large and concrete segregation is easy to occur when pouring with a concrete pump truck.

[0008] In order to achieve the above object, a super-deep foundation pit concrete pouring equipment is provided, comprising:

[0009] A transfer hopper, which is installed on a ring beam at the bottom of the enclosure structure of the ultra-deep foundation pit through a bracket, and is connected to a pump pipe of a concrete truck pump;

[0010] A material delivery hose, one end of which is connected to the discharge port of the transfer hopper;

[0011] A cantilever frame, wherein a base arranged above the transfer hopper is installed on the enclosure structure, a support plate is formed on a side of the base away from the enclosure structure, one end of the cantilever frame is rotatably connected to a side of the base, the support plate is supported on one end of the cantilever frame, and a locking member for locking the support plate to fix the deflection angle of the cantilever frame is installed on one end of the cantilever frame;

[0012] The driving structure includes a plurality of electric drums and slings installed on the ring beam, the plurality of electric drums are respectively connected to one end of the slings, the middle portion of the slings is wound around the other end of the cantilever frame, and the other ends of the plurality of slings are respectively connected to the middle portion and the other end of the material delivery hose, and the slings are retracted and released by the plurality of electric drums to drive the other end of the material delivery hose to move and suspend within two meters above the pouring point.

[0013] Furthermore, one end of the cantilever frame is connected to a side portion of the base plate through a vertical rotating shaft.

[0014] Furthermore, the support plate is provided with a plurality of first locking holes, the plurality of first locking holes are arranged along the circumferential direction of the vertical rotating shaft, a second locking hole is provided at one end of the cantilever frame, and the locking member is detachably inserted into the second locking hole and a first locking hole.

[0015] Furthermore, a cable is connected to the enclosure structure at the other end of the cantilever frame, and the cable is arranged obliquely upward.

[0016] Furthermore, a fixed pulley is installed at the other end of the cantilever frame, and the middle part of the sling is wound around the fixed pulley.

[0017] Furthermore, the middle part and the other end of the material delivery hose are respectively provided with protective sleeves, and the other end of the sling is connected to the protective sleeves.

[0018] Furthermore, the electric drum is a winch.

[0019] The present invention provides a construction method of deep foundation pit concrete pouring equipment, comprising the following steps:

[0020] Move the concrete truck pump to the top of the ultra-deep foundation pit, and lower the pump pipe of the concrete truck pump into the transfer hopper;

[0021] Based on the position of the pouring point at the bottom of the ultra-deep foundation pit, the cantilever frame is rotated, and at the same time, multiple electric reels of the driving structure are retracted and released to drive the other end of the material delivery hose to move and suspend within two meters above the pouring point;

[0022] Installing a locking piece on one end of the cantilever frame to fix the deflection angle of the cantilever frame;

[0023] The concrete truck pump inputs the concrete into the transfer hopper via the pump pipe, and the concrete is then transported to the pouring point via the material delivery hose.

[0024] The beneficial effect of the present invention is that the ultra-deep foundation pit concrete pouring equipment of the present invention can not only increase the concrete pouring depth, but also ensure that the concrete drop point can be freely distributed within the entire pouring radiation range. On the basis of utilizing existing construction machinery, by adding the above-mentioned hose relay pouring system, under the premise of ensuring the concrete performance index, the underground engineering concrete pouring depth is effectively increased, the uniformity of concrete distribution is ensured, and the demand for ultra-deep foundation pit concrete surface distribution is met.

[0025] The ultra-deep foundation pit concrete pouring equipment of the present invention effectively improves the concrete pouring depth while ensuring the working performance of the concrete, and meets the demand for uniform concrete distribution, thereby effectively ensuring the construction quality of the ultra-deep foundation pit concrete cast-in-place structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 It is a schematic structural diagram of an ultra-deep foundation pit concrete pouring equipment according to an embodiment of the present invention.

[0028] Figure 2 It is a schematic structural diagram of a cantilever frame according to an embodiment of the present invention.

[0029] Figure 3 It is a structural schematic diagram of one end of the cantilever frame according to an embodiment of the present invention.

[0030] Figure 4 FIG. 1 is a top view of one end of a cantilever frame according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] Reference Figures 1 to 4 As shown, the present invention provides an ultra-deep foundation pit concrete pouring equipment, including: a transfer hopper 1, a feed hose 2, a cantilever frame 3, and a driving structure.

[0034] In this embodiment, the ultra-deep foundation pit concrete pouring equipment of the present invention is deployed at the bottom of the ultra-deep foundation pit. Specifically, a ring beam is provided on the inner side of the retaining structure of the ultra-deep foundation pit. The ultra-deep foundation pit concrete pouring equipment of the present invention is installed on the retaining structure and the ring beam at the lower part of the retaining structure.

[0035] The transfer hopper 1 is installed on the ring beam 6 at the bottom of the enclosure structure 5 of the ultra-deep foundation pit through a bracket 11. The transfer hopper 1 is connected to the pump pipe 71 of the concrete truck pump 7. The concrete truck pump is set at the top of the ultra-deep foundation pit. The pump pipe of the concrete truck pump is lowered into the transfer hopper to input concrete into the transfer hopper.

[0036] The feed hose 22 is a hose with steel ribs, wherein one end of the feed hose 2 is connected to the discharge port of the transfer hopper 1. The discharge port of the transfer hopper is connected to one end of the feed hose through a flange.

[0037] A base 31 is installed on the enclosure structure 5. The base 31 is arranged above the transfer hopper 1. A support plate 32 is formed on one side of the base 31 away from the enclosure structure 5. One end of the cantilever frame 3 is rotatably connected to one side of the base 31. The support plate 32 is supported on one end of the cantilever frame 3. A locking member 33 for locking the support plate 32 to fix the deflection angle of the cantilever frame 3 is installed on one end of the cantilever frame 3.

[0038] See also Figure 3 and Figure 4 As shown, one end of the cantilever frame 3 is connected to a side portion of the base plate through a vertical rotating shaft 35 .

[0039] Continue reading Figure 4As shown, a plurality of first locking holes 320 are provided on the support plate 32. The plurality of first locking holes 320 are arranged along the circumferential direction of the vertical rotating shaft 35. A second locking hole is provided at one end of the cantilever frame 3. The locking member 33 is detachably inserted into the second locking hole and a first locking hole 320.

[0040] See also Figure 1 As shown, in this embodiment, the other end of the cantilever frame 3 is connected to the enclosure structure 5 with a cable 34. The cable 34 is arranged obliquely upward.

[0041] In this embodiment, the driving structure is used to drive the material delivery hose so that the other end of the material delivery hose moves and hovers above the pouring point at the bottom of the ultra-deep foundation pit.

[0042] Specifically, the driving structure includes a plurality of electric reels 41 and a sling 42. The plurality of electric reels 41 are mounted on the ring beam 6. In this embodiment, each electric reel is equipped with a sling. The plurality of electric reels 41 are respectively connected to one end of the sling 42. The middle portion of the sling 42 is wound around the other end of the cantilever frame 3. The other ends of the plurality of slings 42 are respectively connected to the middle portion and the other end of the material delivery hose 2.

[0043] During pouring, the slings 42 are retracted and released by multiple electric reels 41 to drive the other end of the material delivery hose 2 to move and suspend within a range of two meters above the pouring point.

[0044] See also Figure 1 and Figure 2 As shown, a fixed pulley is installed at the other end of the cantilever frame 3. The middle part of the sling 42 is wound around the fixed pulley.

[0045] The middle part and the other end of the material delivery hose 2 are respectively sleeved with a protective sleeve 21. The other end of the sling 42 is connected to the protective sleeve 21.

[0046] As a preferred embodiment, the electric drum 41 is a winch. In some embodiments, the electric drum is a hoist.

[0047] The present invention provides a construction method of ultra-deep foundation pit concrete pouring equipment, comprising the following steps:

[0048] S1. Move the concrete truck pump 7 to the top of the ultra-deep foundation pit, and lower the pump pipe 71 of the concrete truck pump 7 into the transfer hopper 1.

[0049] S2. Based on the position of the pouring point at the bottom of the ultra-deep foundation pit, the cantilever frame 3 is rotated. At the same time, the multiple electric drums 41 of the driving structure retract and release the slings 42 to drive the other end of the material delivery hose 2 to move and hover within two meters above the pouring point.

[0050] S3. Install the locking member 33 on one end of the cantilever frame 3 to fix the deflection angle of the cantilever frame 3.

[0051] When the cantilever frame is rotated to the right position, the deflection angle of the cantilever frame is locked by inserting the locking member into the second locking hole of the cantilever frame and a first locking hole 320 of the support plate.

[0052] S4, the concrete truck pump 7 inputs the concrete into the transfer hopper 1 through the pump pipe 71, and the concrete is then transported to the pouring point through the material delivery hose 2.

[0053] The ultra-deep foundation pit concrete pouring equipment of the present invention is a pouring equipment that can meet the requirements of large-volume, continuous ultra-deep concrete vertical transportation and uniform distribution in underground engineering without reducing the working performance of concrete.

[0054] The ultra-deep foundation pit concrete pouring equipment of the present invention is equipped with a concrete truck pump with a 62m long pump pipe as a first-level concrete transportation device, and a transfer hopper and a material delivery hose are arranged on the lower support system of the enclosure structure in the ultra-deep foundation pit for concrete transfer.

[0055] The bracket for installing the transfer hopper is made of steel sections, patterned steel plates and steel pipes. A hole is opened in the middle of the bracket, and a transfer hopper is mounted on the bracket. The lower mouth of the transfer hopper is inserted into the lower side of the bracket through the reserved hole, and the discharge port of the transfer hopper is provided with a flange.

[0056] The bottom of the transfer hopper is connected to a φ150mm conveying hose through a flange interface as a pipeline for the concrete to continue to be transported downward. A protective sleeve is set at 2 / 5 / and 4 / 5 of the length of the conveying hose, which is fixedly connected to the hose by hot melting. The protective sleeve is provided with a hanging point steel ring connected to the other end of the sling.

[0057] A cantilever frame is arranged at a corresponding position above the bracket, and the cantilever frame is connected to the base through a vertical rotating shaft through the end. A semicircular support plate is welded on the lower side of the base, and a plurality of first locking holes are opened on the support plate, and the rotation or deflection angle of the cantilever frame can be fixed by inserting a locking member. A cable is arranged on the upper part of the cantilever frame. One end of the cable is fixed to the other end of the cantilever frame, and the other end of the cable is fixed to the foundation pit retaining structure, so as to enhance the stability of the cantilever frame.

[0058] Two winches are fixedly installed on the ring beam, and slings are arranged on the winches. The slings are connected to the sling points of the two protective sleeves of the material conveying hose through the fixed pulley at the other end of the cantilever frame.

[0059] In actual use, the ultra-deep foundation pit concrete pouring equipment of the present invention is deployed in combination with the ultra-deep foundation pit pouring depth and the material distribution range.

[0060] When pouring concrete, first loosen the sling through the winch and remove the locking piece. At this time, the cantilever frame can be rotated in a plane. According to the requirements of the pouring position, adjust the rotation angle of the cantilever frame, and then use the locking piece to lock the support plate to lock the rotation angle of the cantilever frame.

[0061] According to the pouring point and pouring range, the length of the upper sling is first retracted by the corresponding winch to extend the feed hose in the pouring direction.

[0062] Adjust the other winch to retract the length of the lower sling so that the feed hose can be further extended to the pouring point.

[0063] Alternatively, the position of the other end of the delivery hose can be manually adjusted, and concrete pouring can be performed after the position is confirmed to be accurate.

[0064] After the concrete pouring at the corresponding position is completed, the drop point can be adjusted by adjusting the length of the upper and lower slings and the deflection angle of the cantilever frame to meet the needs of continued pouring.

[0065] By using the ultra-deep foundation pit concrete pouring equipment of the present invention, not only the concrete pouring depth can be increased, but also it is ensured that the concrete drop point can be freely distributed within the entire pouring radiation range.

[0066] On the basis of utilizing existing construction machinery, by adding the above-mentioned hose relay pouring system, the concrete pouring depth of underground projects can be effectively improved while ensuring the concrete performance indicators, ensuring the uniformity of concrete distribution and meeting the needs of surface distribution of concrete in ultra-deep foundation pits.

[0067] The ultra-deep foundation pit concrete pouring equipment of the present invention effectively improves the concrete pouring depth while ensuring the working performance of the concrete, and meets the demand for uniform concrete distribution, thereby effectively ensuring the construction quality of the ultra-deep foundation pit concrete cast-in-place structure.

[0068] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An ultra-deep foundation pit concrete pouring equipment, characterized in that: include: A transfer hopper, which is installed on the ring beam at the bottom of the enclosure structure of the ultra-deep foundation pit through a bracket, and is connected to the pump pipe of the concrete truck pump; A material delivery hose, one end of which is connected to the discharge port of the transfer hopper; A cantilever frame, wherein a base arranged above the transfer hopper is installed on the enclosure structure, a support plate is formed on a side of the base away from the enclosure structure, one end of the cantilever frame is rotatably connected to a side of the base, the support plate is supported on one end of the cantilever frame, and a locking member for locking the support plate to fix the deflection angle of the cantilever frame is installed on one end of the cantilever frame; The driving structure includes a plurality of electric drums and slings installed on the ring beam, the plurality of electric drums are respectively connected to one end of the slings, the middle portion of the slings is wound around the other end of the cantilever frame, and the other ends of the plurality of slings are respectively connected to the middle portion and the other end of the material delivery hose, and the slings are retracted and released by the plurality of electric drums to drive the other end of the material delivery hose to move and suspend within two meters above the pouring point.

2. The ultra-deep foundation pit concrete pouring equipment according to claim 1 is characterized in that: One end of the cantilever frame is connected to a side portion of the base plate through a vertical rotating shaft.

3. The ultra-deep foundation pit concrete pouring equipment according to claim 2 is characterized in that: The support plate is provided with a plurality of first locking holes, and the plurality of first locking holes are arranged along the circumferential direction of the vertical rotating shaft. A second locking hole is provided at one end of the cantilever frame, and the locking member is detachably inserted into the second locking hole and a first locking hole.

4. The ultra-deep foundation pit concrete pouring equipment according to claim 2, characterized in that: The other end of the cantilever frame is connected to the enclosure structure with a cable, and the cable is arranged obliquely upward.

5. The ultra-deep foundation pit concrete pouring equipment according to claim 1, characterized in that: A fixed pulley is installed at the other end of the cantilever frame, and the middle part of the sling is wound around the fixed pulley.

6. The ultra-deep foundation pit concrete pouring equipment according to claim 1, characterized in that: The middle part and the other end of the material delivery hose are respectively sleeved with protective sleeves, and the other end of the sling is connected to the protective sleeves.

7. The ultra-deep foundation pit concrete pouring equipment according to claim 1, characterized in that: The electric drum is a winch.

8. A construction method for the ultra-deep foundation pit concrete pouring equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: Move the concrete truck pump to the top of the ultra-deep foundation pit, and lower the pump pipe of the concrete truck pump into the transfer hopper; Based on the position of the pouring point at the bottom of the ultra-deep foundation pit, the cantilever frame is rotated, and at the same time, multiple electric reels of the driving structure are retracted and released to drive the other end of the material delivery hose to move and suspend within two meters above the pouring point; Installing a locking piece on one end of the cantilever frame to fix the deflection angle of the cantilever frame; The concrete truck pump inputs the concrete into the transfer hopper via the pump pipe, and the concrete is then transported to the pouring point via the material delivery hose.

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