Suspension assembly and tunnel rubber wheel transport vehicle

Abstract

The utility model relates to a suspension assembly and a tunnel rubber wheel transport vehicle, the suspension assembly is used for automatically adapting to ramps and undulating road surfaces, the suspension assembly comprises a vehicle frame and suspension mechanisms arranged on the two sides of the vehicle frame, and the suspension mechanism on each side comprises a suspension frame, a front supporting arm, a rear supporting arm, a driving wheel assembly and a driven wheel; a suspension bracket is arranged below the middle of the frame, a front supporting arm and a rear supporting arm are symmetrically arranged on the left side and the right side of the suspension bracket, the front supporting arm comprises a lower arm and an upper arm, the lower arm is horizontally arranged, the upper arm is vertically arranged above the lower arm, and the rear supporting arm and the front supporting arm are identical in structure. One ends of lower arms of the front support arm and the rear support arm are respectively hinged with two sides of the suspension bracket, the other end of the lower arm of the front support arm is provided with a driving wheel assembly, and the other end of the lower arm of the rear support arm is provided with a driven wheel; and a connecting piece is hinged between the upper arms of the front supporting arm and the rear supporting arm, so that the linkage control of the front supporting arm and the rear supporting arm is facilitated. The device can automatically adapt to complex working conditions such as ramps and undulating road surfaces.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle suspension, in particular to a suspension assembly and a tunnel rubber-wheel transport vehicle. Background Art

[0002] When constructing highway and railway tunnels at home and abroad, shield / TBM methods are used for construction at key nodes such as underpasses of main roads or rivers. When using shield / TBM construction methods, material exchange is required. When the tunnel diameter reaches 10 meters or above, belt conveyors or mud and water pipes are often used for slag removal. At this time, tunnel rubber-wheeled vehicles are often used to transport materials such as pipe segments and box culverts.

[0003] Tunnel excavation sections involve ups and downslopes or uneven road surfaces. Due to the length of rubber-tired tunnel transporters, slope adaptability is crucial. Current solutions, such as independent suspension or modular axles, rely entirely on tire compression or hydraulic system adaptation to adapt to slopes. This can cause tires to become suspended or experience reduced force, resulting in insufficient weight on the powered wheels and a "flywheel" phenomenon. This can lead to insufficient vehicle power, causing the transporter to stall or damage the hydraulic system.

[0004] In recent years, with the advancement of technology, research on undulating roads has gradually emerged. For example, Patent Publication No. CN2933933Y discloses a parallelogram-shaped liftable suspension system, which primarily uses hydraulic cylinders to adjust the position of the parallelogram to achieve height adaptation. Another example is Patent Announcement No. CN207156882U, which discloses a suspension mechanism for flatbed trucks. This mechanism adjusts the extension and retraction of the suspension cylinder according to road conditions to achieve undulating road surfaces. This technology requires high control accuracy and logical judgment, and autonomous identification of road conditions, judgment, and decision-making. This deviation from the actual road conditions can lead to low driving efficiency in complex road conditions. Summary of the Invention

[0005] In order to solve the problem that the suspension system of a conventional transport vehicle is difficult to flexibly adapt to complex road conditions, the utility model provides a suspension assembly and a tunnel rubber-wheel transport vehicle, which avoids the situation where high control accuracy and logical judgment are required, and can achieve the purpose of overcoming obstacles through a simple mechanism. The vehicle can move freely under complex working conditions such as ups and downs in tunnel sections and convex and concave roads, and can automatically adapt to complex working conditions such as slopes and undulating roads.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0007] A suspension assembly for automatically adapting to slopes and undulating roads, comprising a vehicle frame and suspension mechanisms disposed on both sides of the frame to facilitate uniform and stable load-bearing of the frame, wherein the suspension mechanism on each side comprises a suspension frame, a front support arm, a rear support arm, a drive wheel assembly, and a driven wheel;

[0008] The suspension frame is provided below the middle portion of the frame, and the front support arm and the rear support arm are symmetrically provided on the left and right sides of the suspension frame, the front support arm includes a lower arm and an upper arm, the lower arm is arranged horizontally, and the upper arm is vertically provided above the lower arm, and the rear support arm and the front support arm have the same structure;

[0009] One end of the lower arm of the front support arm and the rear support arm is hinged to both sides of the suspension frame respectively, which facilitates the front support arm and the rear support arm to swing up and down according to road conditions. The other end of the lower arm of the front support arm is provided with the driving wheel assembly, and the other end of the lower arm of the rear support arm is provided with the driven wheel; a connecting piece is hinged between the upper arms of the front support arm and the rear support arm, which facilitates the linkage control of the front support arm and the rear support arm.

[0010] Furthermore, the lower arm is a horizontal bent body, one end of the lower arm of the front support arm is bent close to the frame, and a front pin shaft is provided between the lower arm and the suspension frame for hinged connection, and the other end of the lower arm of the front support arm is bent away from the frame and connected to the drive wheel assembly, the drive wheel assembly has its own power, and the drive wheel assembly is a hydraulic motor wheel assembly.

[0011] Furthermore, one end of the lower arm of the rear support arm is bent close to the frame and is hinged to the suspension frame with a rear pin shaft, and the other end of the lower arm of the rear support arm is bent away from the frame and connected to the driven wheel.

[0012] Furthermore, the upper arm is provided at the bending portion of the lower arm, the upper arm is a vertical bending body, the upper ends of the upper arms of the front supporting arm and the upper arms of the rear supporting arm are close to each other, and the connecting member is arranged thereon;

[0013] A right pin is provided between one end of the connecting piece and the upper arm of the front support arm for hinge connection, and a left pin is provided between the other end of the connecting piece and the upper arm of the rear support arm for hinge connection, which facilitates the installation of the connecting piece.

[0014] Furthermore, the connecting member is a fixed structure or a telescopic structure, and the connecting member has different structural forms.

[0015] Furthermore, the connecting member is a connecting rod with a fixed structure; or the connecting member is a hydraulic cylinder with a telescopic structure.

[0016] A tunnel rubber-tyred transport vehicle comprises a connecting frame, a cab and a power system assembly for providing power to the transport vehicle, and also comprises the above-mentioned suspension assembly. Suspension assemblies are provided on both sides of the connecting frame, and the cab is provided at one end of each suspension assembly. The power system assembly is provided above the suspension assembly on one side, and a material transport area is formed between the suspension assembly on the other side and the top of the connecting frame.

[0017] Through the above technical solution, the beneficial effects of the utility model are:

[0018] The utility model has a rational structural design. The suspension frame, front support arm, rear support arm and connecting parts form a quadrilateral structure. It can distinguish the road surface elevation deviation and thus control the extension and retraction of the oil cylinder to adapt to the road conditions. Instead, it can directly adjust the road conditions based on the changes in vehicle load and the instability of the quadrilateral structure of the suspension mechanism, greatly improving the passability on bumpy roads.

[0019] The utility model can ensure that the four tires of the suspension mechanism on both sides of the frame can be in close contact with the bearing ground in real time according to the load and the vehicle running state and the instability of the quadrilateral, so as to achieve balanced force and load, and the power or brake can work within the effective range, thereby realizing stable, reliable and safe operation of the tunnel rubber-tyred transport vehicle in the tunnel.

[0020] The transport load of the tunnel rubber-wheeled transport vehicle of the present invention is transmitted to the suspension mechanism through the frame, and the suspension mechanism bears the transmission force through the driven wheel and the driving wheel assembly. The driven wheel and the driving wheel assembly adjust the angles between the lower arms of the front and rear support arms and the frame according to changes in road conditions and load conditions, thereby realizing the ability of the driving wheel assembly and the driven wheel height dimensions of the tunnel rubber-wheeled transport vehicle to automatically cope with complex working conditions, avoiding the existing patented technology of adjusting the extension or retraction size of the oil cylinder through logical judgment of the height dimension to adapt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a suspension assembly of the utility model.

[0022] Figure 2 This is a front view of a front support arm of a suspension assembly of the present utility model.

[0023] Figure 3 This is a top view of the installation of a front support arm of a suspension assembly of the present invention, in which the connecting parts and the suspension bracket are not shown.

[0024] Figure 4 The utility model is a schematic diagram of a suspension assembly in a road driving state, wherein diagram a represents driving on an uphill road, and diagram b represents driving on a sunken road.

[0025] Figure 5 This is a front view of a tunnel rubber-wheeled transport vehicle of the present invention.

[0026] Figure 6 This is a schematic diagram of the connecting parts of the telescopic structure in the second embodiment of a suspension assembly of the present invention, showing the changes before and after the operation of the hydraulic cylinder. Figure a shows the hydraulic cylinder before extension, and figure b shows the hydraulic cylinder after extension.

[0027] The numbers in the accompanying drawings are: 1 frame, 2 suspension mechanism, 21 suspension frame, 22 front support arm, 23 rear support arm, 24 drive wheel assembly, 25 driven wheel, 3 connecting part, 4 connecting frame, 5 cab, 6 lower arm, 7 upper arm, 8 front pin shaft, 9 rear pin shaft, 10 left pin shaft, 11 right pin shaft, 12 power system assembly, 13 transportation area. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0029] Example 1:

[0030] like Figures 1 to 5 As shown, a suspension assembly is used to automatically adapt to slopes and undulating roads, including a frame 1 and suspension mechanisms 2 arranged on both sides of the frame 1. The suspension mechanisms 2 on both sides stably support the frame 1 and can drive the frame 1 to travel.

[0031] In this embodiment, the suspension mechanism 2 on each side includes a suspension frame 21, a front support arm 22, a rear support arm 23, a driving wheel assembly 24, and a driven wheel 25. The suspension frame 21 is set at the lower middle part of the frame 1. The suspension frame 21 is equivalent to a raised component at the lower middle part of the frame 1. The suspension frame 21 is connected and fixed to the frame 1. Figure 1 shown.

[0032] A front support arm 22 and a rear support arm 23 are symmetrically arranged on the left and right sides of the suspension frame 21. The rear support arm 23 has the same structure as the front support arm 22. The front support arm 22 is used as an example for explanation: the front support arm 22 includes a lower arm 6 and an upper arm 7. The lower arm 6 is arranged horizontally, that is, the lower arm 6 is a horizontal bent body, and the bending angle of the lower arm 6 is an obtuse angle. The upper arm 7 is vertically arranged above the lower arm 6. Specifically, the upper arm 7 is arranged at the bending part of the lower arm 6. The upper arm 7 is a vertical bent body, and the upper arm 7 is bent in an arc shape, as shown in FIG. Figure 2 shown.

[0033] The front support arm 22 and the rear support arm 23 are two independent components. During installation, the lower arms 6 of the front and rear support arms 22 and 23 are hinged to the sides of the suspension frame 21. Specifically, the lower arm 6 of the front support arm 22 is bent and positioned adjacent to the vehicle frame 1. A front pin 8 is provided between the lower arm 6 and the suspension frame 21, enabling the hinged installation of the front support arm 22 and the suspension frame 21. The lower arm 6 of the rear support arm 23 is bent and positioned adjacent to the vehicle frame 1. A rear pin 9 is provided between the lower arm 6 and the suspension frame 21, enabling the hinged installation of the rear support arm 23 and the suspension frame 21.

[0034] As a result, the front support arm 22, hinged at the front hinge axis, can swing up and down, while the rear support arm 23, hinged at the rear pin 9, can also swing up and down. To achieve coordinated control of the up and down swinging of the front and rear support arms 22, 23, a connector 3 is hinged between the upper arms 7 of the front and rear support arms 22, 23. Specifically, the upper ends of the upper arms 7 of the front and rear support arms 22 and 23 are close to each other, and the connector 3 is disposed there. The connector 3 is a fixed structure, here a connecting rod of the fixed structure. The connector 3 enables the movement of the front and rear support arms 22, 23 to be correlated.

[0035] When the connecting member 3 is installed, a right pin 11 is provided between one end of the connecting member 3 and the upper arm 7 of the front support arm 22 for articulation, and a left pin 10 is provided between the other end of the connecting member 3 and the upper arm 7 of the rear support arm 23 for articulation. Therefore, when the front support arm 22 or the rear support arm 23 swings, the connecting member 3 can drive the rear support arm 23 or the front support arm 22 to swing simultaneously, and the front support arm 22 and the rear support arm 23 swing in opposite directions.

[0036] The front support arm 22 is used to install the drive wheel assembly 24, that is, the other end of the lower arm 6 of the front support arm 22 is provided with the drive wheel assembly 24. Specifically, the other end of the lower arm 6 of the front support arm 22 is bent away from the frame 1 and connected to the drive wheel assembly 24. The drive wheel assembly 24 is a prior art and has its own power. Here, the drive wheel assembly 24 adopts a hydraulic motor wheel assembly. Its principle is to drive the wheel to rotate through the hydraulic motor reducer, such as Figure 3 shown.

[0037] The rear support arm 23 is used to mount a driven wheel 25. Specifically, the driven wheel 25 is provided at the other end of the lower arm 6 of the rear support arm 23. Specifically, the other end of the lower arm 6 of the rear support arm 23 is bent away from the frame 1 and connected to the driven wheel 25. The driven wheel 25 is not powered, but is driven by the drive wheel assembly 24 to achieve rotation.

[0038] The utility model forms a quadrilateral structure by the suspension frame 21, the front support arm 22, the rear support arm 23 and the connecting member 3, such as Figure 4 As shown in the figure, depending on the road surface conditions, such as slopes and bumps, the drive wheel assembly 24 will be raised or lowered. This change in the drive wheel assembly 24 will cause the front support arm 22 to change its rotation angle around the front pin 8. This change in the front support arm 22 will cause the connector 3 to swing. Simultaneously, the rear support arm 23 will also change its rotation angle around the rear pin 9. Simultaneously, the driven wheel 25 will adapt to the changes in the rear support arm 23, thereby achieving the suspension's adaptive function for complex road conditions.

[0039] A tunnel rubber-tyred transport vehicle comprises a connecting frame 4, a cab 5 and a power system assembly 12 for providing power to the transport vehicle, and also comprises a suspension assembly, such as Figure 5 Suspension assemblies are provided on both sides of the connecting frame 4, with a cab 5 provided at one end of each suspension assembly. A power system assembly 12 is provided above the suspension assembly on one side, and a material transport area 13 is formed between the suspension assembly on the other side and the top of the connecting frame 4. Materials such as pipe segments can be loaded into the transport area 13.

[0040] The tunnel rubber-tyred transport vehicle can meet the needs of tunnel construction with an arc-shaped or other similar road surface, improve the vehicle's passability on this road surface, reduce the wear of wheels and tires, reduce costs for the construction party, improve work efficiency, and reduce work difficulty.

[0041] Example 2:

[0042] This embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that: on the basis of the connection member 3 being a fixed rigid structure, the connection member 3 can also be a telescopic structure. Here, the connection member 3 is a hydraulic cylinder with a telescopic structure, such as Figure 6 As shown, the original connecting rod is replaced by a hydraulic cylinder. In this way, in addition to the ability to adapt to road conditions, the height adjustment function of the frame 1 can also be achieved.

[0043] When the hydraulic cylinder is normally retracted, its length is fixed, which functions similarly to the connecting rod and allows for adaptive handling in complex road conditions. Retraction and extension are controlled by the hydraulic system. When the hydraulic cylinder is extended, the front support arm 22 and the rear support arm 23 simultaneously swing downward, driving the drive wheel assembly 24 and the driven wheel 25 downward and away from the frame 1, thereby achieving height adjustment, enabling the vehicle to better cross obstacles and provide excellent shock absorption performance.

[0044] The connecting member 3 can be an air spring with a telescopic structure. The air spring is extended and retracted through the air system control to achieve wheel swing and height adjustment. At the same time, the shock absorption and buffering performance is better than that of the connecting rod and the hydraulic cylinder.

[0045] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A suspension assembly for automatically adapting to slopes and undulating roads, characterized in that: It comprises a vehicle frame (1) and suspension mechanisms (2) arranged on both sides of the vehicle frame (1), wherein the suspension mechanism (2) on each side comprises a suspension frame (21), a front support arm (22), a rear support arm (23), a driving wheel assembly (24), and a driven wheel (25); The suspension frame (21) is provided below the middle of the vehicle frame (1), and the front support arm (22) and the rear support arm (23) are symmetrically provided on the left and right sides of the suspension frame (21), the front support arm (22) comprises a lower arm (6) and an upper arm (7), the lower arm (6) is arranged horizontally, and the upper arm (7) is vertically provided above the lower arm (6), and the rear support arm (23) and the front support arm (22) have the same structure; One end of the lower arm (6) of the front support arm (22) and the rear support arm (23) is hinged to both sides of the suspension frame (21), the other end of the lower arm (6) of the front support arm (22) is provided with the driving wheel assembly (24), and the other end of the lower arm (6) of the rear support arm (23) is provided with the driven wheel (25); a connecting member (3) is hinged between the upper arm (7) of the front support arm (22) and the rear support arm (23).

2. A suspension assembly according to claim 1, characterized in that: The lower arm (6) is a horizontal bent body. One end of the lower arm (6) of the front support arm (22) is bent close to the vehicle frame (1) and is hinged to the suspension frame (21) by a front pin shaft (8). The other end of the lower arm (6) of the front support arm (22) is bent away from the vehicle frame (1) and is connected to the driving wheel assembly (24). The driving wheel assembly (24) is a hydraulic motor wheel assembly.

3. A suspension assembly according to claim 2, characterized in that: One end of the lower arm (6) of the rear support arm (23) is bent close to the vehicle frame (1) and is hinged to the suspension frame (21) by a rear pin shaft (9). The other end of the lower arm (6) of the rear support arm (23) is bent away from the vehicle frame (1) and is connected to the driven wheel (25).

4. A suspension assembly according to claim 2, characterized in that: The upper arm (7) is provided at the bending portion of the lower arm (6), and the upper arm (7) is a vertical bending body. The upper ends of the upper arm (7) of the front supporting arm (22) and the upper arm (7) of the rear supporting arm (23) are close to each other, and the connecting member (3) is arranged thereon.

5. A suspension assembly according to claim 4, characterized in that: A right pin (11) is provided between one end of the connecting member (3) and the upper arm (7) of the front support arm (22) for hinge connection, and a left pin (10) is provided between the other end of the connecting member (3) and the upper arm (7) of the rear support arm (23) for hinge connection.

6. The suspension assembly according to claim 1, characterized in that: The connecting member (3) is a fixed structure or a telescopic structure.

7. A suspension assembly according to claim 6, characterized in that: The connecting member (3) is a connecting rod of a fixed structure; or the connecting member (3) is a hydraulic cylinder of a telescopic structure.

8. A tunnel rubber-tyred transport vehicle, comprising a connecting frame (4), a cab (5) and a power system assembly (12) for providing power to the transport vehicle, characterized in that: It also includes the suspension assembly according to any one of claims 1 to 7, wherein the suspension assembly is provided on both sides of the connecting frame (4), the driver's cab (5) is provided at one end of each suspension assembly, the power system assembly (12) is provided above the suspension assembly on one side, and a material transportation area (13) is formed between the suspension assembly on the other side and the top of the connecting frame (4).

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