A bucket conversion device for rectangular box culvert excavation
By designing an automated soil bucket conversion device, utilizing rails, electric railcars, and hydraulic cylinder systems, the problems of low efficiency and high labor intensity of traditional soil bucket conversion have been solved, enabling continuous conversion of soil buckets and efficient construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XINGFU ENGINEERING TECHNOLOGY CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional bucket switching is inefficient in box culvert excavation, relies on manual operation, is labor-intensive, and makes continuous bucket switching difficult.
Design a soil hopper switching device that includes a track, an electric railcar, a hydraulic cylinder, and a pulley system to achieve automated soil hopper switching. By using the cooperation of the hydraulic cylinder and the wire rope, the device can automatically unload the old soil hopper and replenish the new soil hopper in real time.
It improved the efficiency of soil bucket conversion, reduced labor intensity, enabled continuous soil bucket conversion, and improved construction efficiency.
Smart Images
Figure CN224432542U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of box culvert excavation technology, and in particular relates to a soil bucket conversion device for rectangular box culvert excavation. Background Technology
[0002] Box culvert excavation refers to the construction process of box-shaped culverts (or box culverts for short) using the jacking method (or pipe jacking method). This is an underground construction method that horizontally pushes a prefabricated box culvert structure from the working pit to the designed position without interrupting surface traffic (such as railways and highways) or carrying out large-scale open excavation.
[0003] In the construction of box culverts, the conversion of earth buckets is a key aspect of optimizing the earthwork transportation system. The general process involves first unloading the soil produced by tunneling machinery such as pipe jacking machines into a designated area, and then using paving equipment (such as graders) for fine spreading and leveling. Traditional earth bucket conversion requires the use of earth buckets to load and transport the soil produced by the tunneling machinery. This entire process is generally manual, resulting in low efficiency, high labor intensity, and difficulty in immediately replacing old earth buckets with new ones after the old ones are full. Therefore, continuous earth bucket conversion is not possible. To address these issues, this utility model provides an earth bucket conversion device for rectangular box culvert tunneling, which is of significant importance. Utility Model Content
[0004] This utility model provides a soil bucket conversion device for rectangular box culvert excavation. Compared with the traditional soil bucket conversion method, it has a high degree of automation and does not require manual operation throughout the process. It not only greatly improves the efficiency of soil bucket conversion, but also effectively reduces the labor intensity of workers. After the old soil bucket is filled with soil and transported out, a new soil bucket can be added immediately, thereby realizing continuous conversion of soil buckets. In summary, it solves the problems in the background technology.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model discloses a bucket conversion device for rectangular box culvert excavation, comprising a track on which an electric railcar is placed, and a base installed on the top of the track. Two pairs of first hydraulic cylinders and one pair of second hydraulic cylinders are respectively installed on the base. The two pairs of first hydraulic cylinders are symmetrically distributed on both sides of the electric railcar, and a bucket bracket is fixedly connected to the top of the output shaft of each first hydraulic cylinder. A first bucket is placed on the bucket bracket. The pair of second hydraulic cylinders are symmetrically distributed on both sides of the electric railcar, and a pin is installed at the top of the output shaft of each second hydraulic cylinder, through which a mast frame is mounted. The mast frame is T-shaped, with several upper fixed pulleys installed on both sides of its top. Several lower fixed pulleys are installed on the base, and steel wire ropes are attached to the lower fixed pulleys. The steel wire ropes pass over the upper fixed pulleys, and the ends of the steel wire ropes are attached to the second buckets. A third hydraulic cylinder is installed on the base, and one side of the mast frame is installed at the end of the output shaft of the third hydraulic cylinder.
[0007] Furthermore, the electric railcar is located between two soil bucket brackets, and the distance between the two sides of the electric railcar and each soil bucket bracket is not less than 50mm.
[0008] Furthermore, both the top surface of the soil bucket bracket and the electric railcar are provided with anti-slip pads, and the surface of the anti-slip pads is provided with herringbone anti-slip patterns.
[0009] Furthermore, the widths of the first and second hoppers are equal, both greater than the width of the electric railcar and less than the outer distance between the two hopper brackets.
[0010] Furthermore, a crossbeam is fixedly connected between the two mast frames.
[0011] The present invention has the following advantages over the prior art:
[0012] (1) When using the rectangular box culvert excavation earth bucket conversion device of this utility model, compared with the traditional earth bucket conversion method, the degree of automation is high and no manual operation is required throughout the process. This not only greatly improves the efficiency of earth bucket conversion, but also effectively reduces the labor intensity of the workers.
[0013] (2) When using the rectangular box culvert excavation soil bucket conversion device of this utility model, a new soil bucket can be added immediately after the old soil bucket is loaded with soil and transported out, so as to realize the continuous conversion of soil buckets.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of a rectangular box culvert excavation earth bucket conversion device according to the present invention;
[0017] Figure 2 This is a side view of a rectangular box culvert excavation bucket conversion device according to the present invention;
[0018] Figure 3 This is a schematic diagram of the structure of the present invention when the first soil bucket is placed on the electric railcar;
[0019] Figure 4 This is a schematic diagram of the structure of the present invention when the electric railcar is loaded with the first soil bucket and moves in the working direction;
[0020] Figure 5 This is a schematic diagram of the structure of the present invention when the second soil bucket is placed on the soil bucket bracket;
[0021] Figure 6 This is a schematic diagram of the structure of the present invention when the steel wire rope drives the second soil bucket to move up and down.
[0022] The attached diagram lists the components represented by each number as follows:
[0023] 1. Track; 2. Electric track car; 3. Base; 4. First hydraulic cylinder; 5. Second hydraulic cylinder; 6. Soil bucket bracket; 7. First soil bucket; 8. Pin shaft; 9. Mast frame; 10. Upper fixed pulley; 11. Lower fixed pulley; 12. Steel wire rope; 13. Second soil bucket; 14. Third hydraulic cylinder; 15. Crossbeam. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] Please see Figure 1-6 As shown, this utility model discloses a bucket conversion device for rectangular box culvert excavation, comprising a track 1, on which an electric railcar 2 is placed. The electric railcar 2 cooperates with the track 1, allowing it to move linearly along the track 1. A base 3 is installed on the top of the track 1, and two pairs of first hydraulic cylinders 4 and one pair of second hydraulic cylinders 5 are respectively installed on the base 3. The two pairs of first hydraulic cylinders 4 are symmetrically distributed on both sides of the electric railcar 2, and a bucket bracket 6 is fixedly connected to the top of the output shaft of the first hydraulic cylinder 4. A first bucket 7 is placed on the bucket bracket 6. Driving the first hydraulic cylinders 4 can drive the bucket bracket 6 to move up and down. The pair of second hydraulic cylinders 5 are symmetrically distributed on both sides of the electric railcar 2, and a pin is installed at the top of the output shaft of the second hydraulic cylinder 5. A mast frame 9 is mounted on the base 3 via a pin 8. The mast frame 9 is T-shaped, with several upper fixed pulleys 10 mounted on both sides of its top. The mast frame 9, along with the upper fixed pulleys 10, can be moved up and down by driving the second hydraulic cylinder 5. Several lower fixed pulleys 11 are mounted on the base 3. A steel wire rope 12 is attached to the lower fixed pulleys 11. The steel wire rope 12 passes around the upper fixed pulleys 10, and a second soil bucket 13 is attached to the end of the steel wire rope 12. The steel wire rope 12 can be tightened or loosened by rotating the lower fixed pulleys 11. When the steel wire rope 12 is tightened or loosened, the second soil bucket 13 can be raised or lowered. A third hydraulic cylinder 14 is mounted on the base 3. One side of the mast frame 9 is mounted on the end of the output shaft of the third hydraulic cylinder 14 and is connected by a hinge.
[0027] The electric railcar 2 is located between two soil bucket brackets 6, and the distance between the two sides of the electric railcar 2 and each soil bucket bracket 6 is not less than 50mm, which can ensure that when the electric railcar 2 moves between the two soil bucket brackets 6, its sides will not come into contact with the soil bucket brackets 6 and cause a collision.
[0028] The top surfaces of both the soil bucket bracket 6 and the electric railcar 2 are equipped with anti-slip mats. The anti-slip mats have herringbone anti-slip patterns on their surfaces. The anti-slip mats can be made of elastic materials such as rubber and are fixed by adhesives. When the first soil bucket 7 and the second soil bucket 13 are placed on the soil bucket bracket 6 and the electric railcar 2, the anti-slip patterns on the surface of the anti-slip mats can increase the friction between them to prevent the first soil bucket 7 and the second soil bucket 13 from slipping during loading and unloading.
[0029] The first hopper 7 and the second hopper 13 are of equal width, both greater than the width of the electric railcar 2 and less than the outer distance between the two hopper brackets 6. When the electric railcar 2 moves between the two hopper brackets 6, the first hydraulic cylinder 4 can drive the hopper bracket 6 and the first hopper 7 to move downward together until the height of the hopper bracket 6 is lower than the height of the electric railcar 2. At this time, the first hopper 7 can be automatically placed on the electric railcar 2 so that the first hopper 7 loaded with soil can be transported out by the electric railcar 2.
[0030] A crossbeam 15 is fixedly connected between the two mast frames 9. The crossbeam 15 can reinforce the mast frames 9 on both sides to improve the stability of the mast frames 9 on both sides.
[0031] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.
[0032] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.
[0033] The working principle of this utility model is as follows:
[0034] In use, this utility model allows the device to be advanced forward along with the tunneling machinery, aligning the first bucket 7, positioned atop the bucket support 6, with the soil outlet of the tunneling machinery. Then, by driving the second hydraulic cylinder 5, it moves the wire rope 12 and the second bucket 13 upwards together, creating space for the electric railcar 2 below (as shown in the attached diagram). Figure 1 As shown), after the first hopper 7 is full of soil, the electric railcar 2 is moved between the two hopper supports 6 and positioned directly below the first hopper 7. Then, the first hydraulic cylinder 4 is driven to move the hopper supports 6 and the first hopper 7 downwards together until the height of the hopper supports 6 is at least 50mm lower than the height of the electric railcar 2. At this point, the first hopper 7 can automatically stop on the electric railcar 2 (as shown). Figure 3 (As shown), then the electric railcar 2 is driven to move the first soil bucket 7, which is loaded with soil, in the working direction, and the first hydraulic cylinder 4 is driven to move the soil bucket bracket 6 upward. Afterwards, the first soil bucket 7 can be lifted to the ground slag pit by a ground crane or other equipment for dumping (e.g., Figure 4(As shown), simultaneously, by driving the third hydraulic cylinder 14, the mast frame 9 along with the second bucket 13 can be deflected, and by loosening the wire rope 12, the second bucket 13 is lowered so that it is placed on the bucket support 6 (as shown). Figure 5 Then, fix the new second hopper 13 to the end of the wire rope 12 and repeat the previous steps to achieve continuous switching of the hopper.
[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A soil bucket conversion device for rectangular box culvert excavation, characterized by, The system includes a track (1), on which an electric railcar (2) is placed. A base (3) is installed on the top of the track (1). Two pairs of first hydraulic cylinders (4) and a pair of second hydraulic cylinders (5) are respectively installed on the base (3). The two pairs of first hydraulic cylinders (4) are symmetrically distributed on both sides of the electric railcar (2). A soil bucket bracket (6) is fixedly connected to the top of the output shaft of the first hydraulic cylinder (4). A first soil bucket (7) is placed on the soil bucket bracket (6). A pair of second hydraulic cylinders (5) are symmetrically distributed on both sides of the electric railcar (2). The output shaft of the second hydraulic cylinder (5) is connected to the soil bucket bracket (6). A pin (8) is installed at the top of the output shaft and a mast frame (9) is installed through the pin (8). The mast frame (9) is T-shaped and has several upper fixed pulleys (10) installed on both sides of its top. Several lower fixed pulleys (11) are installed on the base (3). A steel wire rope (12) is tied to the lower fixed pulley (11). The steel wire rope (12) passes around the upper fixed pulley (10) and the end of the steel wire rope (12) is tied to a second soil bucket (13). A third oil cylinder (14) is installed on the base (3). One side of the mast frame (9) is installed at the end of the output shaft of the third oil cylinder (14).
2. The soil bucket conversion device for rectangular box culvert excavation according to claim 1, characterized in that, The electric railcar (2) is located between two soil bucket brackets (6), and the distance between the two sides of the electric railcar (2) and each soil bucket bracket (6) is not less than 50mm.
3. The soil bucket conversion device for rectangular box culvert excavation according to claim 1, wherein The top surfaces of both the soil bucket bracket (6) and the electric railcar (2) are provided with anti-slip pads, and the surface of the anti-slip pads is provided with herringbone anti-slip patterns.
4. The soil bucket conversion device for rectangular box culvert excavation according to claim 1, characterized in that, The width of the first hopper (7) and the second hopper (13) are equal, both greater than the width of the electric railcar (2) and less than the outer distance between the two hopper brackets (6).
5. The soil bucket conversion device for rectangular box culvert excavation according to claim 1, wherein, A crossbeam (15) is fixedly connected between the two mast frames (9).