A bendable chute device suitable for deep foundation pit
By designing a bendable chute device, the flexible splicing and internal support reinforcement of chute sections are achieved through the connection of studs and holes, which solves the problems of easy breakage and non-adjustable length of chutes, and improves the applicability of deep foundation pit construction and the concrete flow effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-12
AI Technical Summary
Existing chute devices are prone to breakage during deep foundation pit construction and cannot be adjusted in length as needed, resulting in poor applicability and inability to effectively pour concrete in the area below the internal support beam.
A bendable chute device was designed, comprising a first chute stage, a second chute stage, and a turning stage. The chute sections are flexibly spliced through the connection of studs and holes, and reinforced with internal supports to adapt to the construction needs of foundation pits of different depths.
It improves the applicability and ease of assembly of the chute, reduces concrete segregation, ensures smooth concrete flow, and avoids chute breakage and concrete accumulation.
Smart Images
Figure CN224351233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically a bendable chute device suitable for deep foundation pits. Background Technology
[0002] The construction of ultra-deep foundation pits is a complex project. In urban environments, due to space constraints and the complexity of the geological environment, the foundation pit support is mostly diaphragm wall + three layers of concrete internal bracing.
[0003] In this type of foundation pit support system, the foundation pit is very deep and the internal support beams are very dense. The construction space for the deep foundation pit concrete below is limited, and the area below the internal support beams cannot be poured during concrete pouring. Existing chute devices have problems such as not being able to be installed directly, or encountering problems with excessive angles during installation, leading to chute breakage. In addition, the chute cannot be adjusted according to the required length, reducing its applicability. Utility Model Content
[0004] The purpose of this invention is to provide a bendable chute device suitable for deep foundation pits, which aims to solve the problems in the prior art where chutes that are too long are prone to breakage, and the chutes cannot be adjusted according to the required length.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: The bendable chute device suitable for deep foundation pits includes a first chute stage installed at the edge of the foundation pit and inclined from the outside to the inside of the pit, a second chute stage installed from the middle of the foundation pit to the inner wall of the foundation pit, and a turning stage for turning between the first chute stage and the second chute stage.
[0006] The second chute stage is located below the first chute stage, and the connection between the first chute stage and the second chute stage is achieved through a turning stage;
[0007] The first chute stage includes several interconnected first chute segments. Two adjacent first chute segments are fixedly connected by first fasteners. The first chute segment closest to the edge of the pit is installed on the edge of the pit by a trestle, and the lowest first chute segment is connected to the internal support.
[0008] The second chute stage includes several interconnected second chute segments. Two adjacent second chute segments are fixedly connected by a second fastener. The uppermost second chute segment is connected to the inner support, and the lowermost second chute segment is connected to the lowermost inner support.
[0009] The lowermost first chute section is connected to the second chute section through a turning stage, allowing the concrete in the first chute section to flow into the second chute section.
[0010] Preferably, two first studs are fixed at the bottom of the first chute section near the lower side and extend in the vertical direction with front and rear spacing. A first insertion hole with vertical penetration is opened at the position of the first chute section near the upper end. The first studs and first insertion holes of two adjacent first chute sections are inserted into each other, and then the first fastener is threadedly adapted to the first stud passing through the first insertion hole.
[0011] Preferably, two second studs are fixed near the bottom of the second chute section and extend in the vertical direction with a front-to-back gap. A second insertion hole with vertical penetration is opened near the upper end of the second chute section. The second studs and second insertion holes of two adjacent second chute sections are inserted into each other, and then the first fastener is threadedly adapted to the second studs passing through the second insertion hole.
[0012] Preferably, the turning stage includes a stop block fixed in the lowermost first chute section, a diversion trough plate fixed at the bottom of the lowermost first chute section, and a vertical diversion plate fixedly connected to the diversion trough plate and extending in the vertical direction.
[0013] The vertical guide plate corresponds vertically to the uppermost second chute section;
[0014] The first chute section at the bottom is provided with a through hole that is open from top to bottom, and the through hole corresponds to the flow channel plate from top to bottom;
[0015] The stop block is located below the through hole to block the concrete and allow it to flow out of the through hole.
[0016] Preferably, the internal supports in the foundation pit are provided in three sets with vertical spacing, and each set of internal supports is horizontally arranged;
[0017] The internal support includes an upper internal support, a middle internal support, and a lower internal support;
[0018] An intermediate support is fixed on the inner support of the middle layer, and the first chute section at the bottom is fixedly connected to the intermediate support.
[0019] An upper-level support is fixed to the upper inner support, and the upper-level support is fixedly connected to the first chute section in the middle.
[0020] Preferably, a lower-level support is fixed on the lower inner support, and the lower-level support is fixedly connected to the second chute section in the middle.
[0021] Preferably, a first baffle is fixed in the middle of the first chute stage.
[0022] Preferably, a second baffle is fixed in the middle of the second chute stage.
[0023] The beneficial effects are as follows: 1. Two adjacent first chute sections are interlocked by first studs and first sockets, and the first studs passing through the first sockets are threaded together using first fasteners; simultaneously, the second studs of two adjacent first chute sections are also interlocked with the second sockets in the same way, and the threads are matched with the second studs passing through the second sockets using first fasteners. This structural design allows for flexible adjustment of the combined length of the first and second chute stages according to actual needs, thus adapting to the construction requirements of foundation pits at different depths. It also improves the ease of assembly, enabling operators to quickly complete the installation work.
[0024] 2. After the first chute stage and the second chute stage extend into the foundation pit, the first chute stage and the second chute stage can be installed on the internal support to reinforce the first chute stage and the second chute stage.
[0025] 3. This device uses a bendable chute, which can reduce concrete segregation to a certain extent. In addition, baffles are installed on the chute to better prevent concrete segregation and reduce concrete accumulation to a certain extent. Attached Figure Description
[0026] Figure 1 This is a structural diagram illustrating the usage process of this utility model;
[0027] Figure 2 This is a schematic diagram of the structure of several first chute sections spliced together according to this utility model;
[0028] Figure 3 This is a schematic diagram of the structure of several second chute sections spliced together according to this utility model;
[0029] Figure 4 This is a structural schematic diagram of the upper support of this utility model;
[0030] Figure 5 This is a schematic diagram of the structure of the lower-level support of this utility model;
[0031] Figure 6 This is a structural schematic diagram of the intermediate support of this utility model;
[0032] Figure 7 This is a structural schematic diagram of the steering stage of this utility model;
[0033] Figure 8 This is a schematic diagram of the structure of the baffle of this utility model.
[0034] In the diagram: 1. First chute section; 2. Second chute section; 3. Turning stage; 301. Stop block; 302. Diversion trough plate; 303. Vertical diversion plate; 4. Relay; 7. First stud; 8. First insertion hole; 9. Second stud; 10. Second insertion hole; 12. Inner support; 1201. Upper inner support; 1202. Middle inner support; 1203. Lower inner support; 13. Intermediate support; 14. Upper support; 15. Lower support; 16. First baffle; 17. Second baffle; 18. Through hole. Detailed Implementation
[0035] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0036] like Figures 1-8 As shown, a bendable chute device suitable for deep foundation pits is mainly used for extending the bendable chute into the foundation pit for pouring. When assembling the chute, it can be assembled according to the required length to achieve convenient adjustment. Moreover, the bendable chute can also control the concrete buffering speed. The chute makes it easy to control the pouring sequence, which is convenient for deep trench construction and avoids concrete segregation and chute blockage.
[0037] In this embodiment, the bendable chute device includes a first chute stage installed at the edge of the foundation pit and inclined from the outside to the inside of the pit, a second chute stage installed at the middle of the foundation pit and inclined towards the inner wall of the foundation pit, and a turning stage 3 for turning between the first chute stage and the second chute stage. The second chute stage is located below the first chute stage, and the first chute stage and the second chute stage are connected through the turning stage 3. After the first chute stage is installed and fixed at a certain angle, and the second chute stage is installed below the first chute stage, concrete is poured into the funnel at the edge of the foundation pit by a concrete truck. The concrete flows by its own weight within the first chute stage and the second chute stage and is transported to the deep foundation pit.
[0038] like Figures 1-3 As shown, the first chute stage and the second chute stage are assembled according to the requirements of the foundation pit, so that the lengths of the first chute stage and the second chute stage are suitable for the foundation pit, thereby improving applicability.
[0039] Specifically, the first chute stage includes several interconnected first chute segments 1. Two adjacent first chute segments 1 are fixedly connected by a first fastener. Two first studs 7, spaced apart and extending vertically, are fixed near the bottom of the first chute segment 1. A first insertion hole 8, which is open vertically, is provided near the upper end of the first chute segment 1. The first studs 7 and the first insertion holes 8 of two adjacent first chute segments 1 are inserted into each other. After insertion, the first fastener is threadedly adapted to the first stud 7 passing through the first insertion hole 8. In this embodiment, the first fastener is a nut, and the nut is threadedly adapted to the first stud 7 so that two adjacent first chute segments 1 can be spliced together.
[0040] The first chute section 1 closest to the edge of the foundation pit is installed on the edge of the foundation pit by means of a support 4. The lowermost first chute section 1 is connected to the inner support 12. In this embodiment, the structure and principle of the support 4 are existing technologies and will not be described in detail here. The setting of the support 4 enables the installation of the first chute section 1 closest to the edge of the foundation pit so that concrete can be poured from the concrete truck into the first chute section.
[0041] The second chute stage includes several interconnected second chute segments 2. Adjacent second chute segments 2 are fixedly connected by second fasteners. Near the bottom of the lower side of the second chute segment 2, there are two second studs 9 that are spaced apart front and back and extend in the vertical direction. Near the upper end of the second chute segment 2, there is a second through hole 10. The second studs 9 and the second through hole 10 of adjacent second chute segments 2 are inserted into each other. After insertion, the second fastener is threadedly adapted to the second stud 9 that passes through the second through hole 10. In this embodiment, the second fastener is a nut, and the nut is threadedly adapted to the second stud 9 to connect adjacent second chute segments 2.
[0042] The uppermost second chute section 2 is connected to the inner support 12, and the lowermost second chute section 2 is connected to the lowermost inner support 12. The connection between the first chute stage and the inner support 12 through the second chute stage can improve the connection stability of the first chute stage and the second chute stage, and play a reinforcing role.
[0043] like Figure 1 and Figure 7 As shown, the lowest first chute section 1 is connected to the second chute section 2 through the turning stage 3, so that the concrete in the first chute section 1 can flow into the second chute section 2.
[0044] Specifically, the turning stage 3 includes a stop block 301 fixed in the lowermost first chute section 1, a diversion trough plate 302 fixed at the bottom of the lowermost first chute section 1, and a vertical diversion plate 303 fixedly connected to the diversion trough plate 302 and extending in the vertical direction; the vertical diversion plate 303 corresponds vertically to the uppermost second chute section 2; the lowermost first chute section 1 has a through hole 18 that is vertically open, and the through hole 18 corresponds vertically to the diversion trough plate 302; the stop block 301 is located below the through hole 18 to block the concrete and allow the concrete to flow out from the through hole 18.
[0045] In this embodiment, the concrete flowing out through the through hole 18 can first flow to the diversion trough plate 302, then flow from the diversion trough plate 302 to the vertical diversion plate 303, and finally flow to the uppermost second chute section 2, so as to change the direction of the concrete.
[0046] like Figure 1 As shown, the internal supports 12 in the foundation pit are provided in three sets with vertical spacing, and each set of internal supports 12 is set horizontally. The internal supports 12 include an upper internal support 1201, a middle internal support 1202 and a lower internal support 1203.
[0047] like Figures 1-6 As shown, the first chute stage and the second chute stage are installed on the inner support 12 to make the inner support 12 more stable during use.
[0048] Specifically, an intermediate support 13 is fixed on the intermediate inner support 1202, and the lowest first chute section 1 is fixedly connected to the intermediate support 13. In this embodiment, the intermediate support 13 is installed on the intermediate inner support 1202 by two bolts to enhance the support effect. An upper support 14 is fixed on the upper inner support 1201. In this embodiment, the upper support 14 is installed on the upper inner support 1201 by one bolt to support the middle part of the first chute section. The upper support 14 is fixedly connected to the middle first chute section 1.
[0049] A lower-level support 15 is fixed on the lower inner support 1203. In this embodiment, the lower-level support 15 is installed on the lower inner support 1203 by a bolt to support the middle part of the second chute stage. The lower-level support 15 is fixedly connected to the middle part of the second chute section 2.
[0050] like Figure 1 As shown, a first baffle 16 is fixed in the middle of the first chute stage, and a second baffle 17 is fixed in the middle of the second chute stage. The cross-sectional shape of the first baffle 16 and the second baffle 17 is a rectangular plate structure with a bottom-mounted through arc hole. After the first baffle 16 and the second baffle 17 are installed, they can better prevent the segregation of concrete and reduce the accumulation of concrete to a certain extent.
[0051] Working principle: In use, firstly, according to the length requirements, the first studs 7 and first holes 8 of two adjacent first chute sections 1 are inserted into each other. After insertion, the first fastener is threadedly adapted to the first stud 7 passing through the first hole 8, so that several first chute sections 1 are spliced together. Then, the second studs 9 and second holes 10 of two adjacent second chute sections 2 are inserted into each other. After insertion, the second fastener is threadedly adapted to the second stud 9 passing through the second hole 10, so that several second chute sections 2 are spliced together.
[0052] After the splicing is completed, the first chute section 1 closest to the edge of the foundation pit is installed on the edge of the foundation pit using the trestles 4. Then, the lowermost first chute section 1 and the uppermost second chute section 2 are connected to the intermediate support 13 to form a bent chute. Then, the first baffle 16 and the second baffle 17 are installed in the first chute stage and the second chute stage respectively. Concrete is poured into the funnel at the edge of the foundation pit by a concrete truck. The concrete flows by its own weight in the first chute stage and the second chute stage and is transported to the deep foundation pit.
[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A bendable chute device suitable for deep foundation pits, characterized in that, It includes a first chute stage installed at the edge of the pit and inclined from the outside to the inside of the pit, a second chute stage installed at the middle of the pit and inclined towards the inner wall of the pit, and a turning stage between the first chute stage and the second chute stage (3). The second chute stage is located below the first chute stage, and the connection between the first chute stage and the second chute stage is achieved through the turning stage (3); The first chute stage includes several first chute segments (1) spliced together. Two adjacent first chute segments (1) are fixedly connected by first fasteners. The first chute segment (1) closest to the edge of the pit is installed on the edge of the pit by a trestle (4). The lowest first chute segment (1) is connected to the inner support (12). The second chute stage includes several interlocking second chute segments (2). Two adjacent second chute segments (2) are fixedly connected by a second fastener. The uppermost second chute segment (2) is connected to the inner support (12), and the lowermost second chute segment (2) is connected to the lowermost inner support (12). The lowermost first chute section (1) is connected to the second chute section (2) through the turning stage (3), so that the concrete in the first chute section (1) can flow into the second chute section (2).
2. The bendable chute device for deep foundation pits according to claim 1, characterized in that, Two studs (7) are fixed at the bottom of the first chute section (1) near the lower side and extend in the vertical direction. A first insertion hole (8) with vertical penetration is opened at the upper end of the first chute section (1). The studs (7) and the first insertion holes (8) of two adjacent first chute sections (1) are inserted into each other, and then the first fastener is threadedly fitted to the studs (7) passing through the first insertion hole (8).
3. The bendable chute device for deep foundation pits according to claim 2, characterized in that, The second chute section (2) has two second studs (9) fixed near the bottom of the lower side, which are spaced apart and extend in the vertical direction. The second chute section (2) has a second insertion hole (10) that is open at the upper end. The second studs (9) and the second insertion hole (10) of two adjacent second chute sections (2) are inserted into each other, and then the first fastener is threadedly fitted to the second stud (9) that passes through the second insertion hole (10).
4. A bendable chute device suitable for deep foundation pits according to claim 1, characterized in that, The turning stage (3) includes a stop block (301) fixed in the lowermost first chute section (1), a diversion trough plate (302) fixed at the bottom of the lowermost first chute section (1), and a vertical diversion plate (303) fixedly connected to the diversion trough plate (302) and extending in the up and down direction. The vertical guide plate (303) corresponds vertically to the uppermost second chute section (2); The first chute section (1) at the bottom is provided with a through hole (18) that is open from top to bottom, and the through hole (18) corresponds to the flow channel plate (302) from top to bottom; The stop (301) is located below the through hole (18) to block the concrete and allow it to flow out of the through hole (18).
5. A bendable chute device suitable for deep foundation pits according to any one of claims 1-4, characterized in that, The internal supports (12) in the foundation pit are provided in three sets with vertical spacing, and each set of internal supports (12) is set horizontally; The inner support (12) includes an upper inner support (1201), a middle inner support (1202) and a lower inner support (1203). An intermediate support (13) is fixed on the inner support (1202) of the middle layer, and the first chute section (1) at the bottom is fixedly connected to the intermediate support (13); An upper support (14) is fixed on the upper inner support (1201), and the upper support (14) is fixedly connected to the first chute section (1) in the middle.
6. A bendable chute device suitable for deep foundation pits according to claim 5, characterized in that, The lower inner support (1203) is fixed with a lower support (15), and the lower support (15) is fixedly connected to the second chute section (2) in the middle.
7. A bendable chute device suitable for deep foundation pits according to claim 1, characterized in that, A first baffle (16) is fixed in the middle of the first chute stage.
8. A bendable chute device suitable for deep foundation pits according to claim 1, characterized in that, A second baffle (17) is fixed in the middle of the second chute stage.