Bogie with balance beam

Abstract

The utility model discloses a bogie with a balance beam, which comprises a connecting shaft, tires, a speed reducer hydraulic motor, the balance beam, a rotating frame assembly, a rotary support, a steering oil cylinder, an angle sensor component and a bearing half bridge, the rotating frame assembly is connected with the lower end of the rotary support, and the upper end of the rotary support is connected with a frame. A balance beam is installed below the rotating frame assembly through a connecting shaft, tires are installed below the balance beam, and the tires are installed on the speed reducer hydraulic motor and the bearing half bridge through bolts. The steering oil cylinder stretches out or retracts back to push the rotation support to rotate, and the rotation support drives the suspension to achieve overall steering. The balance beam swings around the connecting shaft, so that the tires can bear uniformly and are not suspended when passing through a bumpy road surface, and the walking stability is ensured; and the thickness of bogie steel can be adjusted according to different loads of different vehicles, meanwhile, the number of speed reducer motors and the number of bearing half bridges can be adjusted, and therefore the adaptability of the bogie to different vehicle types and different loads can be greatly improved.

Description

Technical Field

[0001] The utility model relates to a steering and hydraulic transmission system of an engineering vehicle, in particular to a bogie with a balance beam. Background Art

[0002] During tunnel construction, the roads are relatively narrow, and the transportation width can only be about the same as the width of the prefabricated arch blocks or segments, especially the transport vehicles used in conjunction with the shield machine. At the same time, the problem of vehicle passing must also be considered, and the layout of the axle suspension and steering system is relatively difficult.

[0003] If traditional wheel-rail transport vehicles are used, temporary auxiliary rails must be installed and fixed on the arch blocks or segments with anchor bolts before operation. Wheel-rail tunnel track laying vehicles can only move on the tracks and have no steering function. Laying temporary auxiliary tracks not only damages the tunnel segments, but also requires a large amount of manpower for installation and removal, which directly affects the efficiency, safety and cost of tunnel construction.

[0004] The steering system of existing wheeled transporters uses a multi-link linkage mechanism consisting of multiple steering rods. Each steering rod is equipped with a spherical bearing, which transmits the force of the steering cylinder to the steering axle through an articulated connection. To ensure steering accuracy, the machining precision of each hinge point is high, which is also relatively difficult. If the rod becomes loose or damaged during use, it is also difficult to adjust the steering rod on the construction site.

[0005] When a tunnel track laying vehicle encounters a bumpy or low-lying road surface during travel, it can cause uneven load distribution between the vehicle's axles, impacting the vehicle's driving force. In severe cases, a single axle can become overloaded and damaged. This can also affect braking performance due to load transfer during braking. Utility Model Content

[0006] In order to solve at least one of the above problems, the present invention provides a bogie with a balance beam.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A bogie with a balance beam comprises a connecting shaft, a tire, a reducer hydraulic motor, a balance beam, a rotating frame assembly, a slewing support, a steering cylinder, an angle sensor assembly, and a load-bearing half-bridge. The rotating frame assembly is connected to the lower end of the slewing support, and the upper end of the slewing support is connected to the vehicle frame. A balance beam is installed below the rotating frame assembly via a connecting shaft, and a tire is installed below the balance beam. The tire is mounted on the reducer hydraulic motor and the load-bearing half-bridge via bolts.

[0009] As a preferred embodiment of the above scheme, the balance beam is a "U-shaped" box beam structure, including reinforcement rib I, reinforcement plate I, reinforcement plate II, balance beam upper wing plate, balance beam web plate, balance beam lower wing plate, side plate, reinforcement rib II, connecting sleeve, lower reinforcement rib, balance beam end plate; the balance beam upper wing plate and balance beam lower wing plate have the same structure, both of which are formed by one-time bending of steel plates, two balance beam web plates are arranged on both sides of the balance beam upper wing plate and the balance beam lower wing plate, and two balance beam end plates are arranged at both ends of the balance beam upper wing plate and the balance beam lower wing plate; a number of reinforcement plates are arranged inside the box beam structure to increase the torsional strength of the U-shaped box beam; a connecting sleeve is provided at the lower center of the U-shaped structure, and two connecting flanges are provided at the lower end of the U-shaped box beam. The connecting flanges can directly install different numbers of reducer hydraulic motors and load-bearing half-bridges, and the connecting flanges are welded into one through reinforcement rib I, reinforcement plate I, reinforcement plate II, side plates, reinforcement rib II and lower reinforcement ribs to ensure the strength of the connecting flanges.

[0010] As a preferred embodiment of the above scheme, the rotating frame assembly includes a connecting beam and a balance beam connecting seat fixed to the lower end of the connecting beam; the connecting beam is a box beam box structure, including a connecting beam bottom plate, a connecting beam web, a connecting beam upper plate, a reinforcing rib III, and a connecting beam end plate. Two connecting beam webs are provided on both sides of the connecting beam bottom plate and the connecting beam upper plate, two connecting beam end plates are provided at both ends of the connecting beam bottom plate and the connecting beam upper plate, and a reinforcing rib III is provided between the connecting beam web and the connecting beam upper plate. A slewing support mounting hole is provided on the connecting beam upper plate, and a cylinder pin is provided on the connecting beam upper plate. Two cylinder pins are provided. An angle sensor mounting pin is arranged between them, a reinforcement plate III is arranged between the cylinder pin and the angle sensor mounting pin, and a reinforcement rib IV is arranged between the cylinder pin and the upper plate of the connecting beam; the balance beam connecting seat includes a bottom plate, a reinforcement plate IV, a reinforcement washer, a connecting seat support ear, and a reinforcement rib V. Two connecting seat support ears are vertically arranged at both ends of the lower side of the bottom plate, a reinforcement plate IV is arranged between the two connecting seat support ears, and a reinforcement rib V is arranged between the bottom plate and the connecting seat support ear. A connecting hole for the connecting shaft to pass through is opened on the connecting seat support ear, and a reinforcement washer is provided at the connecting hole to increase the contact area of ​​the connecting shaft.

[0011] As a preferred embodiment of the above solution, the fixing ring of the slewing support is fixedly connected to the vehicle frame, and the slewing ring is fixedly connected to the connecting beam upper plate of the connecting beam.

[0012] As a preferred embodiment of the above scheme, one end of the steering cylinder and the centering cylinder is connected to the cylinder seat through the cylinder pin shaft I, and the other end is connected to the cylinder pin shaft on the connecting beam, and the cylinder seat is installed on the vehicle frame; the steering cylinder is mainly used for steering the vehicle, and the centering cylinder is not only used for aligning the tires on the bogie, but when the steering cylinder is working, the centering cylinder acts as a follow-up cylinder and does not interfere with the work of the steering cylinder.

[0013] As a preferred embodiment of the above scheme, half of the angle sensor assembly is installed on the angle sensor mounting pin, and the other half is installed on the frame. When turning, the steering cylinder pushes the bogie to rotate, and the frame and the bogie form an angle. The angle is fed back to the vehicle ECU by the angle sensor assembly to form a judgment on the steering of the vehicle.

[0014] As a preferred embodiment of the above scheme, the connecting shaft is placed in the connecting sleeve and the balance beam connecting seat, connecting the balance beam and the rotating frame assembly into a whole, and the balance beam can swing around the connecting shaft; at the same time, when the rotating frame assembly is pushed to rotate by the steering cylinder, the rotating frame assembly drives the balance beam to rotate, forming a steering.

[0015] As a preferred embodiment of the above scheme, a shoulder is provided at one end of the connecting shaft to prevent the connecting shaft from falling off during use, and a thread and a thread groove are provided at the other end to facilitate the installation of the locking nut and the retaining washer.

[0016] Due to the above structure, the beneficial effects of the utility model are:

[0017] 1. By extending or retracting the steering cylinder, the slewing support is driven to rotate, and the slewing support drives the suspension to achieve overall steering. The steering angle can be measured and controlled by the angle sensor assembly, and the reliability of the tire's return to centering can be greatly improved by the action of the centering cylinder. The balancing beam swings around the connecting shaft, so that when passing through potholes and uneven roads, the tires are evenly loaded and not suspended, ensuring driving stability. The thickness of the bogie steel can be adjusted according to the different loads of different vehicles, and the number of reducer motors and load-bearing half-bridges can also be adjusted, thereby greatly improving the adaptability of the bogie to different vehicle models and different loads. This utility model optimizes the structure and function of the balancing suspension and steering system, integrates the suspension and bogie, facilitates vehicle layout, can adapt to various road conditions, and increases the service life of the balancing suspension.

[0018] 2. When the bogie of the present invention is applied to a bidirectional driving transport vehicle, it can realize various steering modes such as front axle steering, rear axle steering, diagonal steering and figure eight steering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 、 Figure 3 This is a schematic structural diagram of the balance beam of the utility model;

[0022] Figure 4This is a structural diagram of the rotating frame assembly of the utility model;

[0023] Figure 5 This is a structural diagram of the connecting beam of the utility model;

[0024] Figure 6 This is a structural diagram of the balance beam connecting seat of the utility model. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 6 As shown, this embodiment provides a bogie with a balance beam, including a connecting shaft 1, a tire 2, a reducer hydraulic motor 3, a balance beam 4, a rotating frame assembly 5, a slewing support 6, a steering cylinder 7, an angle sensor assembly (angle sensor and angle sensor transmission rod) 8, and a load-bearing half-bridge 12. The rotating frame assembly 5 is connected to the lower end of the slewing support 6, and the upper end of the slewing support 6 is connected to the frame. A balance beam 4 is installed below the rotating frame assembly 5 through the connecting shaft 1, and a tire 2 is installed below the balance beam 4. The tire 2 is mounted on the reducer hydraulic motor 3 and the load-bearing half-bridge 12 by bolts.

[0027] Specifically:

[0028] The balance beam 4 is a box beam structure with a "U-shape", including reinforcement rib I 4-1, reinforcement plate I 4-2, reinforcement plate II 4-3, balance beam upper wing plate 4-4, balance beam web plate 4-5, balance beam lower wing plate 4-6, side plate 4-7, reinforcement rib II 4-8, connecting sleeve 4-9, lower reinforcement rib 4-10, balance beam end plate 4-11; the balance beam upper wing plate 4-4 and balance beam lower wing plate 4-6 have the same structure, both of which are formed by bending steel plates in one step, two balance beam web plates 4-5 are arranged on both sides of the balance beam upper wing plate 4-4 and balance beam lower wing plate 4-6, and two balance beam end plates 4-11 are arranged at both ends of the balance beam upper wing plate 4-4 and balance beam lower wing plate 4-6; several reinforcement plates are arranged inside the box beam structure to increase the torsional strength of the U-shaped box beam. A connecting sleeve 4-9 is provided at the lower center of the U-shaped structure, and two connecting flanges 4-12 are provided at the lower end of the U-shaped box beam. The connecting flange 4-12 is welded into one body by reinforcing rib I 4-1, reinforcing plate I 4-2, reinforcing plate II 4-3, side plate 4-7, reinforcing rib II 4-8 and lower reinforcing rib 4-10, thereby ensuring the strength of the connecting flange 4-12 and forming a fixed frame structure for installing the reducer hydraulic motor 3 and the load-bearing half-bridge 12. The connecting flange 4-12 can directly install the reducer hydraulic motor 3 and the load-bearing half-bridge 12. During design, the number of powered wheel reducer hydraulic motor 3 and non-powered wheel load-bearing half-bridge 12 can be freely matched according to the load and speed of the vehicle, which provides convenience for designing vehicles with different loads and speeds.

[0029] The rotating frame assembly 5 includes a connecting beam 52 and a balance beam connecting seat 51 fixed to the lower end of the connecting beam 52; the connecting beam 52 is a box beam box structure, including a connecting beam bottom plate 52-1, a connecting beam web 52-2, a connecting beam upper plate 52-3, a reinforcing rib III 52-8, and a connecting beam end plate 52-9. Two connecting beam webs 52-2 are provided on both sides of the connecting beam bottom plate 52-1 and the connecting beam upper plate 52-3, two connecting beam end plates 52-9 are provided at both ends of the connecting beam bottom plate 52-1 and the connecting beam upper plate 52-3, and a reinforcing rib III 52-8 is provided between the connecting beam web 52-2 and the connecting beam upper plate 52-3. A slewing support mounting hole is opened on the connecting beam upper plate 52-3, and a cylinder pin shaft 52-5 is provided on the connecting beam upper plate 52-3. An angle is provided between the two cylinder pin shafts 52-5. The angle sensor is installed with a pin shaft 52-7, and a reinforcing plate III 52-6 is provided between the cylinder pin shaft 52-5 and the angle sensor installation pin shaft 52-7, and a reinforcing rib IV 52-4 is provided between the cylinder pin shaft 52-5 and the upper plate 52-3 of the connecting beam; the said balance beam connecting seat 51 comprises a bottom plate 51-1, a reinforcing plate IV 51-2, a reinforcing washer 51-3, a connecting seat support ear 51-4, and a reinforcing rib V 51-5. Two connecting seat support ears 51-4 are vertically provided at both ends of the lower side of the said bottom plate 51-1, a reinforcing plate IV 51-2 is provided between the two connecting seat support ears 51-4, and a reinforcing rib V 51-5 is provided between the bottom plate 51-1 and the connecting seat support ear 51-4. A connecting hole for the connecting shaft 1 to pass through is opened on the connecting seat support ear 51-4, and a reinforcing washer 51-3 is provided at the connecting hole to increase the contact area of ​​the connecting shaft 1.

[0030] The fixing ring of the slewing support 6 is fixedly connected to the vehicle frame, and the slewing ring is fixedly connected to the connecting beam upper plate 52 - 3 of the connecting beam 52 .

[0031] One end of the steering cylinder 7 and the centering cylinder 9 are connected to a cylinder base 11 via a cylinder pin 10, and the other end is connected to a cylinder pin 52-5 on the connecting beam 52. The cylinder base 11 is mounted on the vehicle frame. The steering cylinder 7 is primarily used for vehicle steering, while the centering cylinder 9 not only aligns the tires 2 on the bogie, but also acts as a slave cylinder when the steering cylinder 7 is operating, without interfering with the operation of the steering cylinder.

[0032] Half of the angle sensor assembly 8 is installed on the angle sensor mounting pin 52-7, and the other half is installed on the frame. When turning, the steering cylinder 7 pushes the bogie to rotate, and the frame and the bogie form an angle. The angle is fed back to the vehicle ECU by the angle sensor assembly 8 to form a judgment on the steering of the vehicle.

[0033] The connecting shaft 1 is positioned within the connecting sleeves 4-9 and the balance beam connector 51, integrally connecting the balance beam 4 to the rotating frame assembly 5. This allows the balance beam 4 to swing about the connecting shaft 1. Simultaneously, when the rotating frame assembly 5 is rotated by the steering cylinder 7, it drives the balance beam 4 to rotate, creating a steering motion. To prevent the connecting shaft 1 from falling off during use, one end of the connecting shaft 1 is provided with a shoulder, while the other end is provided with threads and a thread groove to facilitate the installation of a lock nut and retaining washer.

[0034] The working principle of the above structure is:

[0035] By extending or retracting the steering cylinder 7, the slewing support 6 is pushed to rotate, and the slewing support 6 drives the suspension to achieve overall steering, and the steering angle is measured and controlled by the angle sensor and the angle sensor transmission rod 8. The reliability of the tire return can be greatly improved by the action of the centering cylinder 9; by the balance beam 4 swinging around the connecting shaft 1, the tire load can be evenly distributed and not suspended when passing through bumpy roads, thereby ensuring walking stability; the thickness of the bogie steel can be adjusted according to the different loads of different vehicles, and the number of reducer motors and load-bearing half-bridges 12 can also be adjusted, thereby greatly improving the adaptability of the bogie to different vehicle models and different loads.

[0036] When the bogie of this embodiment is used in a bidirectional transport vehicle, if front-axle steering is employed, the steering cylinder 7 on the front bogie is used for steering through electro-hydraulic control, while the centering cylinder 9 on the front bogie serves as a slave cylinder and does not interfere with the operation of the steering cylinder. The rotating cylinder 7 on the rear bogie is inoperative, while the centering cylinder 9 operates to align the tires 2 on the rear bogie, ensuring that the vehicle's rear axle does not deviate. Similarly, if rear-axle steering is employed, the steering cylinder 7 on the rear bogie is used for steering through electro-hydraulic control, while the centering cylinder 9 on the rear bogie serves as a slave cylinder and does not interfere with the operation of the steering cylinder. The rotating cylinder 7 on the front bogie is inoperative, while the centering cylinder 9 operates to align the tires 2 on the front bogie, ensuring that the vehicle's front axle does not deviate. Furthermore, if oblique or splayed steering is employed, the steering cylinders 7 on the front and rear bogies are used for steering through electro-hydraulic control, while the centering cylinder 9 on the front and rear bogies serves as a slave cylinder and does not interfere with the operation of the steering cylinder. When the driver changes the cab operation, the same principle is used, except that the front axle becomes the rear axle and the rear axle becomes the front axle. In order to ensure the safety of the vehicle and the driver's operability, each time a steering mode is completed or the cab is switched, the tire 2 on the bogie is corrected through the centering cylinder 9, which can realize various steering modes of the vehicle, such as front axle steering, rear axle steering, oblique steering and figure-eight steering.

[0037] This embodiment optimizes the structure and function of the balancing suspension and steering system, integrates the suspension and the steering rack, facilitates vehicle layout, can adapt to various road conditions, and increases the service life of the balancing suspension.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bogie with a balance beam, characterized in that: The invention comprises a connecting shaft (1), a tire (2), a speed reducer hydraulic motor (3), a balance beam (4), a rotating frame assembly (5), a slewing support (6), a steering oil cylinder (7), an angle sensor assembly (8), and a load-bearing half-bridge (12). The rotating frame assembly (5) is connected to the lower end of the slewing support (6), and the upper end of the slewing support (6) is connected to the vehicle frame. A balance beam (4) is installed below the rotating frame assembly (5) through the connecting shaft (1), and a tire (2) is installed below the balance beam (4). The tire (2) is installed on the speed reducer hydraulic motor (3) and the load-bearing half-bridge (12) through bolts.

2. The bogie with a balance beam according to claim 1, characterized in that: The balance beam (4) is a "U-shaped" box beam structure, comprising a reinforcing rib I (4-1), a reinforcing plate I (4-2), a reinforcing plate II (4-3), an upper wing plate of the balance beam (4-4), a web plate of the balance beam (4-5), a lower wing plate of the balance beam (4-6), a side plate (4-7), a reinforcing rib II (4-8), a connecting sleeve (4-9), a lower reinforcing rib (4-10), and an end plate of the balance beam (4-11); the upper wing plate (4-4) and the lower wing plate (4-6) of the balance beam have the same structure, and are both formed by bending steel plates in one step. Two web plates of the balance beam (4-5) are provided on both sides of the upper wing plate (4-4) and the lower wing plate (4-6). Two balance beam end plates (4-11) are provided at both ends of the lower wing plate (4-6) of the beam; a plurality of reinforcing plates are provided inside the box beam structure to increase the anti-torsion strength of the U-shaped box beam; a connecting sleeve (4-9) is provided at the lower center of the U-shaped structure; two connecting flanges (4-12) are provided at the lower end of the U-shaped box beam; the connecting flanges (4-12) can directly install different numbers of reducer hydraulic motors (3) and load-bearing half bridges (12); the connecting flanges (4-12) are welded into one body through reinforcing ribs I (4-1), reinforcing plate I (4-2), reinforcing plate II (4-3), side plates (4-7), reinforcing ribs II (4-8) and lower reinforcing ribs (4-10) to ensure the strength of the connecting flanges (4-12).

3. The bogie with a balance beam according to claim 1, characterized in that: The rotating frame assembly (5) includes a connecting beam (52) and a balance beam connecting seat (51) fixed to the lower end of the connecting beam (52); the connecting beam (52) is a box beam box structure, including a connecting beam bottom plate (52-1), a connecting beam web plate (52-2), a connecting beam upper plate (52-3), a reinforcing rib III (52-8), and a connecting beam end plate (52-9); two connecting beam web plates are provided on both sides of the connecting beam bottom plate (52-1) and the connecting beam upper plate (52-3). (52-2), two connecting beam end plates (52-9) are provided at both ends of the connecting beam bottom plate (52-1) and the connecting beam upper plate (52-3), a reinforcing rib III (52-8) is provided between the connecting beam web plate (52-2) and the connecting beam upper plate (52-3), a slewing support mounting hole is provided on the connecting beam upper plate (52-3), a cylinder pin shaft (52-5) is provided on the connecting beam upper plate (52-3), and an angle is provided between the two cylinder pin shafts (52-5). A sensor mounting pin shaft (52-7), a reinforcing plate III (52-6) is provided between the oil cylinder pin shaft (52-5) and the angle sensor mounting pin shaft (52-7), and a reinforcing rib IV (52-4) is provided between the oil cylinder pin shaft (52-5) and the connecting beam upper plate (52-3); the balance beam connecting seat (51) comprises a bottom plate (51-1), a reinforcing plate IV (51-2), a reinforcing washer (51-3), a connecting seat support ear (51-4), and a reinforcing rib V (51-5). Two connecting seat lugs (51-4) are vertically arranged at both ends of the lower side of the bottom plate (51-1), a reinforcing plate IV (51-2) is arranged between the two connecting seat lugs (51-4), a reinforcing rib V (51-5) is arranged between the bottom plate (51-1) and the connecting seat lugs (51-4), a connecting hole for the connecting shaft (1) to pass through is opened on the connecting seat lugs (51-4), and a reinforcing washer (51-3) is arranged at the connecting hole to increase the contact area of ​​the connecting shaft (1).

4. The bogie with a balance beam according to claim 1, characterized in that: The fixing ring of the slewing support (6) is fixedly connected to the vehicle frame, and the slewing ring is fixedly connected to the connecting beam upper plate (52-3) of the connecting beam (52).

5. The bogie with a balance beam according to claim 1, characterized in that: One end of the steering oil cylinder (7) and the centering oil cylinder (9) are connected to the oil cylinder seat (11) through the oil cylinder pin shaft I (10), and the other end is connected to the oil cylinder pin shaft (52-5) on the connecting beam (52). The oil cylinder seat (11) is installed on the vehicle frame. The steering oil cylinder (7) is mainly used for steering the vehicle, and the centering oil cylinder (9) is not only used for aligning the tire (2) on the bogie, but also when the steering oil cylinder (7) is working, the centering oil cylinder (9) acts as a follower oil cylinder and does not interfere with the work of the steering oil cylinder.

6. The bogie with a balance beam according to claim 1, characterized in that: Half of the angle sensor assembly (8) is mounted on the angle sensor mounting pin (52-7), and the other half is mounted on the vehicle frame. When turning, the steering cylinder (7) pushes the bogie to rotate, and the frame and the bogie form an angle. The angle is fed back to the vehicle ECU by the angle sensor assembly (8) to form a judgment on the steering of the vehicle.

7. The bogie with a balance beam according to claim 1, characterized in that: The connecting shaft (1) is placed in the connecting sleeve (4-9) and the balance beam connecting seat (51), connecting the balance beam (4) and the rotating frame assembly (5) into a whole, and the balance beam (4) can swing around the connecting shaft (1); at the same time, when the rotating frame assembly (5) is driven to rotate by the steering oil cylinder (7), the rotating frame assembly (5) drives the balance beam (4) to rotate, thereby forming a steering.

8. The bogie with a balance beam according to claim 1, characterized in that: One end of the connecting shaft (1) is provided with a shaft shoulder to prevent the connecting shaft (1) from falling off during use, and the other end is provided with a thread and a thread groove to facilitate the installation of a locking nut and a stop washer.

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