Foundation pit roadbed backfilling structure

Abstract

The utility model provides a foundation pit subgrade backfill structure which comprises a protective shell, a butt joint rod and two fixing frames, a supporting rod is fixedly connected between the inner walls of the left side and the right side of the protective shell, the circumferential surface of the supporting rod is fixedly connected with a rack, and the upper end of the butt joint rod is fixedly connected with a connecting rod through a bolt. A first double-head motor is fixedly connected into the connecting rod, gears are fixedly connected to the output ends of the two sides of the first double-head motor, and the two gears are engaged with the two racks correspondingly, and the design solves the problems that an original device is small in backfilling range, construction time and equipment resources are increased when a large deep foundation is treated, and construction cost is reduced. The device is reasonable in structure and good in practicability, the protective shell is installed on the upper surface of the foundation pit, the stirring wheel and the roller loosen and compact soil in the foundation pit while the butt joint rod moves in the protective shell, and therefore the flatness in the foundation pit is improved.

Description

Technical Field

[0001] The utility model relates to a foundation pit roadbed backfill structure, belonging to the technical field of roadbed construction. Background Art

[0002] When backfilling the foundation pit, pour the soil into the foundation pit, and then spread the backfill soil in the foundation pit manually. After the bottom layer is spread, vibrate the bottom layer to increase the backfill density, and then backfill the next layer. Repeat this operation to complete the foundation pit.

[0003] Publication No.: CN220414364U mentions a deep foundation pit backfilling device. When backfilling the deep foundation pit, the backfill soil is placed in a filling bucket. During the backfilling process, the filling bucket is controlled to swing, so that a range backfill layer can be formed at the bottom of the foundation pit, reducing subsequent paving construction. However, the backfilling range of this device is small. When dealing with larger deep foundations, the construction time and equipment resources are increased, resulting in low efficiency when filling the foundation pit. Now there is an urgent need for a foundation pit roadbed backfill structure to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a foundation pit roadbed backfill structure to solve the problems raised in the above-mentioned background technology. The utility model has good practicality. By installing a protective shell on the upper surface of the foundation pit, the docking rod moves in the protective shell, and the stirring wheel and the roller loosen and compact the soil in the foundation pit, thereby increasing the flatness of the foundation pit.

[0005] In order to achieve the above-mentioned object, the present invention is realized by the following technical solution: a foundation pit roadbed backfill structure, comprising a protective shell, a docking rod and two fixing frames, a support rod is fixedly connected between the left and right inner walls of the protective shell, and a rack is fixedly connected to the circumferential surface of the support rod;

[0006] The upper end of the docking rod is fixedly connected to a connecting rod by a bolt, and a first double-headed motor is fixedly connected to the connecting rod, and gears are fixedly connected to the output ends on both sides of the first double-headed motor, and the two gears are respectively meshed with two racks. The lower end of the docking rod is fixedly connected to a wrapping cylinder, and an adjustment electric motor is fixedly connected to the wrapping cylinder, and the output end of the adjustment electric motor is fixedly connected to a support frame, and a second double-headed motor is fixedly connected to the square structure of the support frame, and stirring wheels are fixedly connected to the output ends on both sides of the second double-headed motor, and the right end of the support frame is fixedly connected to a support shell, and a roller is rotatably connected between the inner walls on both sides of the support shell.

[0007] Furthermore, both left and right ends of the protective shell are fixedly connected with docking blocks, and the two fixing frames are respectively connected to the two docking blocks in a cooperative manner.

[0008] Furthermore, the front ends of the docking rod and the connecting rod are fixedly connected with a ruler, and the support frame is rotatably connected to the wrapping tube.

[0009] Furthermore, the left end of the support frame is fixedly connected to two mounting frames, and the lower ends of the two mounting frames are rotatably connected to a rotating wheel.

[0010] Furthermore, a spirit level is fixedly connected to the front end of the protective shell, and a rubber pad is provided between the connecting rod and the docking rod.

[0011] Furthermore, the connecting rod is slidably connected to the protective shell, and a triangular structure is provided on the surface of the supporting frame.

[0012] The beneficial effects of the utility model: the utility model provides a foundation pit roadbed backfill structure. Since the utility model adds a rack, a support rod, a first double-headed motor, a gear, a second double-headed motor, a stirring wheel and a roller, our design improvement and actual use have shown that the device has a reasonable structure and good practicality. By installing the protective shell on the upper surface of the foundation pit, the docking rod moves in the protective shell, and the stirring wheel and the roller loosen and compact the soil in the foundation pit, thereby increasing the flatness of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of a first overall structure of a foundation pit roadbed backfill structure of the utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of a foundation pit roadbed backfill structure of the utility model;

[0016] Figure 3 This is a structural schematic diagram of a support frame in a foundation pit roadbed backfill structure of the utility model;

[0017] Figure 4 This is a structural schematic diagram of a protective shell in a foundation pit roadbed backfill structure of the utility model;

[0018] Figure 5 It is a schematic three-dimensional diagram of the second overall structure of a foundation pit roadbed backfill structure of the utility model.

[0019] In the figure: 1-protective shell, 2-fixing frame, 3-level, 4-docking rod, 5-ruler, 6-connecting rod, 7-wrapping cylinder, 8-support shell, 9-support frame, 10-drum, 11-mounting frame, 12-rotating wheel, 13-stirring wheel, 14-first double-headed motor, 15-gear, 16-rack, 17-support rod, 18-adjustment motor, 19-second double-headed motor, 20-docking block. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figure 1-Figure 5 The utility model provides a technical solution: a foundation pit roadbed backfill structure, including a protective shell 1, a docking rod 4 and two fixing frames 2, a support rod 17 is fixedly connected between the left and right inner walls of the protective shell 1, a rack 16 is fixedly connected to the circumferential surface of the support rod 17, the upper end of the docking rod 4 is fixedly connected to the connecting rod 6 by a bolt, a first double-headed motor 14 is fixedly connected to the connecting rod 6, the output ends of both sides of the first double-headed motor 14 are fixedly connected to gears 15, the two gears 15 are respectively engaged with the two racks 16, and the lower end of the docking rod 4 is fixedly connected to the There is a wrapping cylinder 7, which is fixedly connected to an adjusting electric motor 18 inside the wrapping cylinder 7, and the output end of the adjusting electric motor 18 is fixedly connected to a support frame 9. A second double-headed motor 19 is fixedly connected to the square structure of the support frame 9, and the output ends on both sides of the second double-headed motor 19 are fixedly connected to stirring wheels 13. The right end of the support frame 9 is fixedly connected to a supporting shell 8, and a roller 10 is rotatably connected between the inner walls on both sides of the supporting shell 8. This design solves the problem that the backfill range of the original device is small, and when dealing with larger deep foundations, the construction time and equipment resources are increased, resulting in low efficiency when filling the foundation pit.

[0022] As the first embodiment of the present invention: the left and right ends of the protective shell 1 are fixedly connected with docking blocks 20, and the two fixing frames 2 are respectively connected to the two docking blocks 20. The docking blocks 20 installed on both sides of the protective shell 1 can be fixedly installed on the foundation pit by docking with the fixing frames 2. When the foundation pit is being processed, the protective shell 1 can be connected to the docking blocks 20 to support the movement of the stirring wheel 13 in the protective shell 1. The front ends of the docking rod 4 and the connecting rod 6 are fixedly connected with a ruler 5. The support frame 9 is rotatably connected to the wrapping tube 7. The connecting rod 6 is installed on the surface of the connecting rod 6 and the docking rod 4 to facilitate workers to judge the position of the foundation pit and the equipment. The support frame 9 rotates in the wrapping tube 7 to increase the stability of the support frame 9 in the wrapping tube 7. The left end of the support frame 9 is fixedly connected to two mounting frames 11. The lower ends of the two mounting frames 11 are rotatably connected to the rotating wheels 12. The rotating wheels 12 installed at the lower ends of the mounting frames 11 can assist the equipment in supporting the stirring wheel 13 and the roller 10 to move in the foundation pit. A level 3 is fixedly connected to the front end of the protective shell 1. A rubber pad is provided between the connecting rod 6 and the docking rod 4. The level 3 installed on the surface of the protective shell 1 allows workers to judge the flatness of the equipment in the foundation pit. The rubber pad installed between the connecting rod 6 and the docking rod 4 reduces wear on the connecting surface of the connecting rod 6 and the docking rod 4. The connecting rod 6 is slidably connected to the protective shell 1. The surface of the support frame 9 is provided with a triangular structure. The triangular structure provided on the surface of the support frame 9 allows soil to slide on the ground through the support frame 9.

[0023] As the second embodiment of the present utility model: first, two fixing frames 2 are installed at both ends of the foundation pit, and then the protective shell 1 is fixedly installed between the two fixing frames 2. When the soil is introduced into the foundation pit, the first double-headed motor 14 can be operated to drive the gear 15 to move on the surface of the rack 16, and at the same time, the second double-headed motor 19 can be operated to drive the stirring wheel 13 to rotate, so that the stirring wheel 13 and the roller 10 can flatten the soil in the foundation pit, thereby increasing the flatness of the foundation pit. When the rack 16 and the roller 10 are processing the foundation pit, the angle of the stirring wheel 13 and the roller 10 can be adjusted by operating the adjustment electric 18 to increase the processing range of the stirring wheel 13.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0025] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A foundation pit roadbed backfill structure, comprising a protective shell (1), a docking rod (4) and two fixing frames (2), characterized in that: A support rod (17) is fixedly connected between the left and right inner walls of the protective shell (1), and a rack (16) is fixedly connected to the circumferential surface of the support rod (17); The upper end of the docking rod (4) is fixedly connected to a connecting rod (6) by bolts, a first double-headed motor (14) is fixedly connected inside the connecting rod (6), both output ends of the first double-headed motor (14) are fixedly connected to gears (15), and the two gears (15) are respectively engaged with two racks (16), the lower end of the docking rod (4) is fixedly connected to a wrapping cylinder (7), an adjustment motor (18) is fixedly connected inside the wrapping cylinder (7), the output end of the adjustment motor (18) is fixedly connected to a support frame (9), a second double-headed motor (19) is fixedly connected inside the square structure of the support frame (9), both output ends of the second double-headed motor (19) are fixedly connected to stirring wheels (13), the right end of the support frame (9) is fixedly connected to a support shell (8), and a roller (10) is rotatably connected between the inner walls of both sides of the support shell (8).

2. The foundation pit roadbed backfill structure according to claim 1, characterized in that: The left and right ends of the protective shell (1) are both fixedly connected with docking blocks (20), and the two fixing frames (2) are respectively connected to the two docking blocks (20) in a mutually cooperative manner.

3. The foundation pit roadbed backfill structure according to claim 1, characterized in that: The front ends of the docking rod (4) and the connecting rod (6) are both fixedly connected with a ruler (5), and the support frame (9) is rotatably connected to the inside of the wrapping tube (7).

4. The foundation pit roadbed backfill structure according to claim 1, characterized in that: The left end of the support frame (9) is fixedly connected to two mounting frames (11), and the lower ends of the two mounting frames (11) are rotatably connected to a rotating wheel (12).

5. The foundation pit roadbed backfill structure according to claim 1, characterized in that: A level (3) is fixedly connected to the front end of the protective shell (1), and a rubber pad is provided between the connecting rod (6) and the docking rod (4).

6. The foundation pit roadbed backfill structure according to claim 1, characterized in that: The connecting rod (6) is slidably connected to the protective shell (1), and a triangular structure is provided on the surface of the supporting frame (9).

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