Prefabricated box culvert
By designing the box culvert body with sloping ends on both sides and adopting internal and external connecting frames and locking structures, the problem of high difficulty in connecting precast box culverts was solved, and construction efficiency was improved.
Patent Information
- Application Number
- CN202520042135.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The connection process at both ends of existing precast box culverts is difficult, resulting in low construction efficiency.
The box culvert body is designed with sloping structures on both the left and right ends, and uses a "door" shaped combination of inner and outer frames, with locking blocks and clamps used to achieve docking, positioning and connection.
This reduced the difficulty of connecting box culverts and improved construction efficiency.
Smart Images
Figure CN223660678U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the prefabricated box culvert technical field, especially a prefabricated box culvert. BACKGROUND
[0002] In the current civil engineering and traffic construction field, the prefabricated box culvert is widely used in the city underground pipeline, comprehensive pipe gallery and so on which is composed of the city sewer, underground passage, bridge foundation, tunnel lining and various communication pipelines.
[0003] However, the prefabricated box culvert on the market usually adopts plane design at both ends, and such structure needs to transport two sections of box culverts to the working site and be in the same plane first, then pushes two sections of box culverts to butt joint, and still needs to adjust the position of one section of box culvert constantly to make two sections of box culverts align, to make the tongue and groove positioning at both ends of the box culvert, and finally completes the connection between the box culverts through the connecting assembly, and the working process is difficult, and the overall construction efficiency is slow. UTILITY MODEL CONTENTS
[0004] The utility model aims at: provide a prefabricated box culvert, reduce the difficulty of butt joint between the box culvert and the box culvert to some extent, thereby improve the overall construction efficiency.
[0005] The prefabricated box culvert, including the box culvert body, the left end of the box culvert body is inclined structure of left low right high, and the right end of the box culvert body is parallel with the left end, the left end of the box culvert body is fixed with inner interface frame, and the inner interface frame is inclined distribution along the left end of the box culvert body, the right end of the box culvert body is fixed with outer interface frame that can be sleeved on the inner interface frame, and the outer interface frame is " door " type structure, the front and rear side walls of the inner interface frame are fixed with the clamping block, and the inner side wall of the outer interface frame is provided with the clamping groove for the clamping block to enter.
[0006] Further, the front and rear side walls of the box culvert body are provided with ventilation holes that are communicated with the inside and outside.
[0007] Further, the top of the box culvert body is provided with a through hole that is communicated with the inside and outside.
[0008] Further, the outer interface frame is fixed with two first lock blocks that are front and rear distribution, and the first lock block is ladder type structure, and the top of the left end of the box culvert body is provided with the first lock groove for embedding two first lock blocks.
[0009] Further, the inner bottom of the left end of the box culvert body is provided with two second lock grooves that are front and rear distribution, and the right end of the box culvert body is fixed with two second lock blocks that can be locked into two second lock grooves respectively.
[0010] Further, the clamping block on the front and rear side walls of the inner interface frame is two, and the two clamping blocks are up and down distribution, and the inner side wall of the outer interface frame is provided with the opening for the clamping block to enter the clamping groove.
[0011] Compared with the prior art, the utility model has the advantages of the following:
[0012] The utility model discloses a left and right ends of the box culvert body are provided as inclined planes, so that when the two ends are connected, one of the box culvert bodies is connected from top to bottom, after the inner connecting frame and the outer connecting frame are positioned, the alignment and connection work are conveniently completed, the difficulty of connecting the two box culvert bodies is reduced to a certain extent, and the overall construction efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the structural schematic diagram of the utility model;
[0014] Figure 2 It is the first three-dimensional structure diagram of the utility model;
[0015] Figure 3 It is the second three-dimensional structure diagram of the utility model;
[0016] Figure 4 It is the state diagram of the two adjacent box culvert bodies about to be connected;
[0017] The names of various components in the drawing are as follows: 1, box culvert body;2, outer connecting frame;3, first lock block;4, clamping groove;5, second lock block;6, connecting plate;7, inner connecting frame;8, clamping block. DETAILED DESCRIPTION
[0018] The utility model will be further described in connection with the drawings through specific embodiments, but it is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
[0019] EMBODIMENT
[0020] The box culvert of the embodiment comprises a box culvert body 1, and the box culvert body 1 is prefabricated by reinforced concrete, and a plurality of longitudinal and transverse rubber steel frames are arranged in the box culvert body 1 during pouring to guarantee the stability of the structure. Figure 1 As shown in the figure, the box culvert body 1 is prefabricated by reinforced concrete, and a plurality of longitudinal and transverse rubber steel frames are arranged in the box culvert body 1 during pouring to guarantee the stability of the structure.
[0021] The left end of the box culvert body 1 is in a left-low and right-high inclined structure, and the included angle between the left end surface and the bottom of the box culvert body 1 is between 20 degrees and 30 degrees.
[0022] As shown in the figure, the right end of the box culvert body 1 is parallel to the left end, so that the box culvert body 1 is in a parallelogram shape from the side. Figure 2As shown, the left end of the box culvert body 1 is fixed with an inner frame 7, the bottom of which is flush with the bottom of the box culvert body 1, and the top, front wall and back wall of which are kept a certain distance from the top and the front and back walls of the box culvert body 1, forming a "door" type outer gap between them. The inner frame 7 is obliquely distributed along the left end of the box culvert body 1, and the obliquity of the inner frame 7 is consistent with the left end surface of the box culvert body 1. In addition, the box culvert body 1 and the inner frame 7 are integrally cast during pouring.
[0023] As shown, Figure 3 The right end of the box culvert body 1 is fixed with an outer frame 2 that can be fitted on the inner frame 7, and the outer frame 2 is in the form of a "door" type structure. The front and back walls of the inner frame 7 are fixed with clamping blocks 8, and the inner side wall of the outer frame 2 is provided with clamping grooves 4 for the clamping blocks 8 to enter. The outer frame 2 is fitted on the inner frame 7 and is located at the outer gap, and the outer frame 2 only has a top and front and back walls, which are flush with the top and front and back walls of the box culvert body 1. When two adjacent box culvert bodies 1 are butted, they are in a flush state. The front and back inner side walls and the inner top of the outer frame 2 are kept a certain distance from the inner top and the front and back walls of the box culvert body 1, forming an inner gap, which is in butt joint with the inner frame 7.
[0024] In addition, the outer frame 2 and the box culvert body 1 are integrally cast during pouring.
[0025] The clamping blocks 8 on the front and back walls of the inner frame 7 are two, which are distributed above and below, and the inner side wall of the outer frame 2 is provided with openings for the clamping blocks 8 to enter the clamping grooves 4. Corresponding to the two clamping blocks 8 on the front or back wall of the inner frame 7, the clamping grooves on the inner side wall of the outer frame 2 are also two. When two adjacent box culvert bodies 1 are butted, one of the box culvert bodies 1 moves from top to bottom, and the inner frame 7 cooperates with the outer frame 2 to guide the moving box culvert body 1 to slide obliquely downward along the left section of the stationary box culvert body 1. In this process, the clamping blocks 8 will pass through the openings and enter the clamping grooves 4. When the outer frame 2 and the inner frame 7 restrict each other, it means that the two box culvert bodies 1 are butted, and the clamping blocks 8 also enter the clamping grooves 4 through the openings.
[0026] Ventilation holes are provided on the front and back walls of the box culvert body 1, which are connected with the outside. This improves the ventilation rate of the box culvert body 1 and also reduces the weight of the box culvert body 1 to a certain extent.
[0027] A through hole is provided on the top of the box culvert body 1, which is connected with the outside. This increases the ventilation effect and reduces the weight, and also allows the pulling rope to be pulled from the outside to the inside, which facilitates the lifting of the box culvert body 1 by the crane or hoist. The through hole is provided at both ends of the top of the box culvert body 1, so that the structure of the box culvert body 1 is not damaged during lifting.
[0028] As shown, Figures 2 to 4As shown, two first locking blocks 3 are fixed on the outer frame 2, arranged in a front-to-back pattern. The first locking blocks 3 have a trapezoidal structure, and a first locking groove for the two first locking blocks 3 to be inserted is provided on the top of the left end of the box culvert body 1. When one box culvert body 1 moves from top to bottom along the left side plate of the other, the first locking block 3 can enter the first locking groove. The trapezoidal structure of the first locking blocks 3 prevents the two connected box culvert bodies 1 from moving relative to each other along their length after connection, which is equivalent to increasing the connection strength between the two box culvert bodies 1.
[0029] Two second locking slots, arranged front to back, are provided on the inner bottom of the left end of the box culvert body 1. Two second locking blocks 5 are fixed to the right end of the box culvert body 1, which can be locked into the two second locking slots respectively. The working principle of the second locking blocks 5 and the second locking slots is the same. When one box culvert body 1 moves from top to bottom, it enters the second locking slot at the inner bottom of the other box culvert body 1, increasing the connection strength between the two. The second locking blocks 5 are fixed to the right end face of the box culvert body 1 by the connecting plate 6, and are located inside the outer frame 2. The two ends of the connecting plate 6 are spaced from the front and rear inner sidewalls of the outer frame 2 by a gap greater than the width of the inner frame 7. When the two box culvert bodies 1 are connected, the connecting plate 6 is located at the inner bottom of the inner frame 7.
[0030] like Figure 4 As shown, in actual use, when the left and right ends of two adjacent box culvert bodies 1 are joined, the box culvert body 1 whose left end needs to be joined is in a stationary state (No. 1), while the box culvert body 1 whose right end needs to be joined is in a moving state (No. 2). A crane or hoist lifts box culvert body 1 No. 2 and slowly moves it towards the left end of box culvert body 1 No. 1, moving it from top to bottom. During this process, the inner frame 7 is aligned with the outer frame 2. That is, the outer frame 2 and the inner frame 7 need to be accurately positioned. This step is relatively difficult. It is difficult; once the inner frame 7 and the outer frame 2 are aligned, the No. 2 box culvert body 1 can be slowly lowered. It will be guided by the outer frame 2 and the inner frame 7, as well as the left end slope of the No. 1 box culvert body 1, to align the two box culvert bodies 1 until the locking block 8 enters the locking groove 4 through the opening, the first locking block 3 enters the first locking groove, and the second locking block 5 enters the second locking groove. At the same time, the alignment and connection of the two box culvert bodies 1 are realized, which reduces the difficulty of docking the box culvert bodies 1 to a certain extent and improves the overall construction efficiency.
[0031] Additionally, a silicone sealing frame can be installed at the left or right end of the box culvert body 1 to increase the sealing performance after the two are joined.
Claims
1. A precast box culvert, comprising a box culvert body (1), characterized in that: The left end of the box culvert body (1) has a left-low and right-high inclined structure, and the right end of the box culvert body (1) is parallel to the left end; an inner frame (7) is fixed to the left end of the box culvert body (1), and the inner frame (7) is inclined along the left end of the box culvert body (1). An outer frame (2) that can be fitted onto the inner frame (7) is fixed to the right end of the box culvert body (1). The outer frame (2) has a "door" shaped structure. A locking block (8) is fixed on the front and rear side walls of the inner frame (7), and a slot (4) for the locking block (8) to enter is opened on the inner side wall of the outer frame (2).
2. The precast box culvert according to claim 1, characterized in that: The box culvert body (1) has ventilation holes on its front and rear side walls that connect the inside and outside.
3. The precast box culvert according to claim 1, characterized in that: The top of the box culvert body (1) has a through hole that connects the inside and outside.
4. The precast box culvert according to claim 1, characterized in that: Two first locking blocks (3) are fixed on the outer frame (2) and are arranged in a front-to-back manner. The first locking blocks (3) have a trapezoidal structure. The top of the left end of the box culvert body (1) is provided with a first locking groove for the two first locking blocks (3) to be embedded.
5. The precast box culvert according to claim 1, characterized in that: The bottom left end of the box culvert body (1) has two second locking grooves distributed in front and behind, and the right end of the box culvert body (1) has two second locking blocks (5) that can be locked into the two second locking grooves respectively.
6. The precast box culvert according to claim 1, characterized in that: The inner frame (7) has two locking blocks (8) on its front and rear side walls, and the two locking blocks (8) are distributed vertically. The inner side wall of the outer frame (2) has an opening for the locking blocks (8) to enter the slot (4).