Commercial vehicle emergency steering power device and commercial vehicle

Abstract

The present invention belongs to the technical field of commercial vehicle emergency steering control, and discloses a commercial vehicle emergency steering power device and a commercial vehicle. The commercial vehicle emergency steering power device includes a driving mechanism, an emergency valve and an emergency pump. The housing of the driving mechanism is fixedly arranged on the vehicle body; the emergency valve is fixedly arranged on the housing, and a first oil channel is arranged in the emergency valve, and the two ends of the first oil channel are respectively connected to the main oil pump outlet and the power steering gear; the emergency valve is configured to transmit the power steering oil at the outlet of the main oil pump to the power steering gear to complete the steering assistance; the power input end of the emergency pump is connected to the power output end of the driving mechanism, and a second oil channel is arranged in the emergency pump, and the second oil channel is connected to the first oil channel. The driving mechanism can drive the emergency pump to work so that the emergency pump provides power steering oil to the power steering gear to complete the emergency steering assistance. The present invention shortens the distance between the emergency valve and the emergency pump, and has a simple structure and reduced difficulty in space arrangement.

Description

Technical Field

[0001] The invention relates to the technical field of commercial vehicle emergency steering control, in particular to a commercial vehicle emergency steering power device and a commercial vehicle. Background Art

[0002] In order to meet the requirements of relevant regulations and standards, the dual front axle steering system of commercial vehicles usually uses an emergency steering pump as the emergency steering power source. When the emergency steering system uses this power source, it is necessary to add two assemblies, the emergency steering valve and the power steering oil tank, and match the fixed assembly bracket and two sets of oil tank connecting pipes. The emergency steering valve and the oil tank, the emergency steering pump connecting pipe each have one set, and the motor needs to work at a low speed. The system structure is complex, and there are problems such as increased oil leakage points, increased costs, difficulty in vehicle space layout, and ineffective energy loss. Summary of the invention

[0003] The object of the present invention is to provide a commercial vehicle emergency steering power device and a commercial vehicle, so as to solve the problems of complex structure and difficult space arrangement of the emergency steering device.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] Emergency steering power device for commercial vehicles, including:

[0006] A driving mechanism, wherein a housing of the driving mechanism is fixedly disposed on the vehicle body;

[0007] an emergency valve, the emergency valve being fixedly mounted on the housing, the emergency valve being provided with a first oil passage, the two ends of the first oil passage being respectively connected to the main oil pump outlet and the power steering gear; the emergency valve being configured to transmit the power steering oil at the outlet of the main oil pump to the power steering gear to complete the steering assistance;

[0008] An emergency pump, wherein the power input end of the emergency pump is connected to the power output end of the driving mechanism, a second oil passage is provided inside the emergency pump, the second oil passage is connected to the first oil passage, and the driving mechanism can drive the emergency pump to work so that the emergency pump provides the power steering oil to the power steering gear to complete the emergency steering assistance.

[0009] Optionally, the emergency valve is arranged at one end of the housing facing the emergency pump and is connected and fixed to the emergency pump via a connecting piece.

[0010] Optionally, the driving mechanism is a DC driving motor.

[0011] Optionally, a plurality of mounting studs are provided on the shell of the driving mechanism, and the mounting studs are connected to the longitudinal beam of the vehicle body. A shock-absorbing pad is provided on each of the mounting studs, and two ends of the shock-absorbing pad are respectively stopped at the shell and the longitudinal beam of the vehicle body.

[0012] Optionally, an end of the second oil passage away from the first oil passage is a second oil inlet, and the second oil inlet is connected to a power steering oil tank.

[0013] Optionally, the first oil channel is provided with a flow detector, and when the flow detected by the flow detector is less than a set threshold, the driving mechanism starts to drive the emergency pump to work.

[0014] Optionally, the driving mechanism is provided with a motor power interface and a signal interface, the motor power interface is connected to the power supply of the whole vehicle, and the signal interface is connected to the signal line of the whole vehicle.

[0015] Optionally, when the main oil pump works normally, the power steering oil enters the power steering gear through the first oil channel to complete the steering assistance; when the main oil pump fails, the driving mechanism starts and drives the emergency pump to work, and the power steering oil enters the first oil channel through the second oil channel and then enters the power steering gear to complete the emergency steering assistance.

[0016] A commercial vehicle comprises the commercial vehicle emergency steering power device as described in any of the above schemes, wherein the commercial vehicle emergency steering power device is fixedly mounted on the longitudinal beam of the vehicle body.

[0017] Optionally, the commercial vehicle further comprises a bracket, which is L-shaped, one end of which is connected to the emergency steering power device of the commercial vehicle, and the other end of which is connected to the longitudinal beam of the vehicle body.

[0018] Beneficial effects of the present invention:

[0019] The commercial vehicle emergency steering power device of the present invention, by fixing the emergency valve on the housing of the driving mechanism, is conducive to shortening the distance between the emergency valve and the emergency pump, reducing the connecting pipelines and having a simple structure, greatly reducing the required layout space, reducing the difficulty of space layout, and facilitating improving the efficiency of the steering assistance and improving the steering assistance effect.

[0020] The commercial vehicle of the present invention adopts the commercial vehicle emergency steering power device, which has a simple structure and is convenient for space arrangement on the whole vehicle, thereby helping to reduce the cost of power steering and improve the efficiency of power steering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the commercial vehicle emergency steering assist device of the present invention;

[0022] Figure 2The utility model is a schematic diagram of the installation structure of the commercial vehicle emergency steering device of the present invention on the longitudinal beam of the vehicle body.

[0023] In the figure:

[0024] 1. Driving mechanism; 11. Shell; 12. Heat dissipation mechanism; 13. Mounting studs; 14. Shock pads; 15. Motor power interface; 16. Signal interface; 2. Emergency valve; 21. First oil inlet; 22. Oil outlet; 3. Emergency pump; 31. Second oil inlet; 4. Flow detector; 5. Connectors; 6. Vehicle body longitudinal beam; 7. Bracket. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0029] The present invention provides a commercial vehicle emergency steering power device, such as Figure 1 As shown, it includes a driving mechanism 1, an emergency valve 2 and an emergency pump 3. The housing 11 of the driving mechanism 1 is fixedly arranged on the vehicle body; the emergency valve 2 is fixedly arranged on the housing 11, and a first oil channel is arranged inside the emergency valve 2, and the two ends of the first oil channel are respectively connected to the main oil pump outlet and the power steering gear; the emergency valve 2 is configured to transmit the power steering oil at the outlet of the main oil pump to the power steering gear to complete the steering assistance; the power input end of the emergency pump 3 is connected to the power output end of the driving mechanism 1, and a second oil channel is arranged inside the emergency pump 3, and the second oil channel is connected to the first oil channel. The driving mechanism 1 can drive the emergency pump 3 to work so that the emergency pump 3 provides power steering oil to the power steering gear to complete the emergency steering assistance.

[0030] like Figure 1 As shown, the first oil inlet 21 and the oil outlet 22 are provided at both ends of the first oil channel of the emergency valve 2. The first oil inlet 21 is connected to the outlet of the main oil pump, and the oil outlet 22 is connected to the power steering gear. The first oil inlet 21 and the oil outlet 22 are respectively provided on both sides of the driving mechanism 1. The emergency pump 3 is provided with a second oil inlet 31, and the second oil channel connects the second oil inlet 31 and the first oil channel, so that the second oil inlet 31 can provide steering power oil to the oil outlet 22 on the first oil channel through the second oil channel. The commercial vehicle emergency steering power device of the present invention, by fixing the emergency valve 2 on the housing 11 of the driving mechanism 1, is conducive to shortening the distance between the emergency valve 2 and the emergency pump 3, reducing the connecting pipelines and having a simple structure, greatly reducing the required layout space, reducing the difficulty of space layout, and facilitating the improvement of the efficiency of the steering assistance and the improvement of the steering assistance effect.

[0031] Optionally, the emergency valve 2 is arranged at one end of the housing 11 facing the emergency pump 3 and is fixedly connected to the emergency pump 3 via a connecting piece 5 .

[0032] like Figure 1 As shown, the emergency valve 2 is installed near the output end of the driving mechanism 1, and the emergency valve 2 and the emergency pump 3 are connected and fixed by a connector 5 so that the first oil channel and the second oil channel are connected. Preferably, the connector 5 is a sealing flange, and the connector 5 is connected to the emergency valve 2 around the circumference of the second oil channel, which is conducive to achieving a sealed connection between the first oil channel and the second oil channel. It can be seen that the direct connection and communication between the emergency valve 2 and the emergency pump 3 avoids the need to set up an oil pipe between the two, reduces the overall number of oil pipes used, and thus reduces oil leakage points, and the installation space is greatly reduced, the integration effect is good, and it is easy to achieve overall disassembly and assembly.

[0033] Optionally, the driving mechanism 1 is a DC driving motor.

[0034] In some embodiments, the drive mechanism 1 is a 24V DC motor, and a heat dissipation mechanism 12 is provided at the other end of the drive mechanism 1 opposite to the emergency pump 3 to ensure normal heat dissipation and operation of the drive mechanism 1. The DC motor can increase the speed to a set value (such as 4000r / min) in an instant, which is conducive to realizing emergency power steering drive.

[0035] Optionally, a plurality of mounting studs 13 are provided on the housing 11 of the driving mechanism 1 , and the mounting studs 13 are connected to the vehicle body longitudinal beam 6 , and each mounting stud 13 is provided with a shock absorbing pad 14 , and both ends of the shock absorbing pad 14 are respectively stopped at the housing 11 and the vehicle body longitudinal beam 6 .

[0036] like Figure 1 and Figure 2 As shown, when the housing 11 is connected to the vehicle body longitudinal beam 6, a plurality of mounting studs 13 are provided to improve the assembly of the drive mechanism 1 and realize the detachable connection between the drive mechanism 1 and the vehicle body longitudinal beam 6. Shock-absorbing pads 14 are provided on the mounting studs 13 to reduce the vibration interference to the drive mechanism 1 during the operation of the vehicle, protect the housing 11 of the drive mechanism 1, and extend the service life.

[0037] Optionally, an end of the second oil passage away from the first oil passage is a second oil inlet 31 , and the second oil inlet 31 is connected to the power steering oil tank.

[0038] In the present invention, by setting the first oil channel and the second oil channel, two oil inlets are actually provided for the supply of steering power oil. When the main oil pump fails, the first oil inlet 21 has no oil inlet, and the emergency pump 3 is quickly started under the drive of the drive mechanism 1 and provides steering power oil through the second oil inlet 31, ensuring emergency steering assistance and improving steering reliability. Since the emergency pump 3 is directly connected to the emergency valve 2, the steering power oil in the second oil channel can quickly reach the emergency valve 2 to achieve emergency steering assistance.

[0039] Optionally, the first oil channel is provided with a flow detector 4. When the flow detected by the flow detector 4 is less than a set threshold, the driving mechanism 1 starts to drive the emergency pump 3 to work.

[0040] The flow detector 4 uses a flow sensor to detect the flow in the first oil channel. When the main oil pump fails, the first oil inlet 21 does not flow oil, and the flow detected by the flow detector 4 is less than the set threshold. At this time, the drive mechanism 1 starts and drives the emergency pump 3 to work, and provides steering power oil through the second oil channel. The flow detector 4 is set and connected to the vehicle controller to facilitate the automatic control of the steering power.

[0041] Optionally, the driving mechanism 1 is provided with a motor power interface 15 and a signal interface 16 , the motor power interface 15 is connected to the power supply of the whole vehicle, and the signal interface 16 is connected to the signal line of the whole vehicle.

[0042] like Figure 1 As shown, the motor power interface 15 is connected to the vehicle power supply to ensure that the drive mechanism 1 has a driving voltage to work. The signal interface 16 is connected to the vehicle signal line, and the vehicle signal line is connected to the vehicle controller, so that the vehicle controller can start and stop the operation of the drive mechanism 1, and it is convenient to start the drive mechanism 1 at the moment when the main oil pump fails to realize emergency steering assistance and ensure driving safety.

[0043] Optionally, when the main oil pump works normally, the power steering oil enters the power steering gear through the first oil channel to complete the steering assistance; when the main oil pump fails, the drive mechanism 1 starts and drives the emergency pump 3 to work, and the power steering oil enters the first oil channel through the second oil channel and then enters the power steering gear to complete the emergency steering assistance.

[0044] It can be understood that the emergency valve 2 is used to realize the conventional steering assistance of the vehicle. When the main oil pump fails and cannot provide steering assistance oil, the vehicle controller controls the drive mechanism 1 to start and drive the emergency pump 3 to provide steering assistance oil to ensure normal steering assistance. Since the second oil channel of the emergency pump 3 is connected to the first oil channel of the emergency valve 2, the steering assistance oil in the power steering oil tank can be supplied to the emergency valve 2 in the shortest distance and time to realize steering assistance, and the steering assistance efficiency is greatly improved. By setting the flow detector 4 to connect to the vehicle controller, the automatic control of the steering assistance is realized, and the safety and reliability are greatly improved.

[0045] The present invention also provides a commercial vehicle, including the commercial vehicle emergency steering power device provided by the present invention, such as Figure 2 The commercial vehicle emergency steering power device is fixedly installed on the vehicle body longitudinal beam 6, has a simple structure, is convenient for space arrangement on the whole vehicle, and is beneficial to reducing the steering power cost and improving the steering power efficiency.

[0046] Optionally, the commercial vehicle further includes a bracket 7 , which is L-shaped, with one end of the bracket 7 connected to the emergency steering power device of the commercial vehicle and the other end connected to the vehicle body longitudinal beam 6 .

[0047] like Figure 2 In the illustrated embodiment, the bracket 7 is an L-shaped plate, and both ends of the plate have a reinforcement structure to form a U-shaped cross section. One end of the bracket 7 is provided with a mounting hole, which is penetrated on the mounting stud 13 and tightened by a bolt. The bracket 7 is crimped on the shock-absorbing pad 14, which is conducive to reducing the vibration effect of the vehicle body longitudinal beam 6 on the driving mechanism 1. The other end of the bracket 7 is connected to the vehicle body longitudinal beam 6 through a plurality of bolt and nut assemblies. By providing the bracket 7, it is easy to install and adjust the installation angle, meet the requirements of the space layout of the whole vehicle, and have a good shock absorption effect.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A commercial vehicle emergency steering power device, characterized in that: include: A driving mechanism (1), wherein a housing (11) of the driving mechanism (1) is fixedly arranged on a vehicle body longitudinal beam (6); An emergency valve (2), the emergency valve (2) being fixedly arranged on the housing (11), the emergency valve (2) being provided with a first oil passage, the two ends of the first oil passage being respectively connected to the main oil pump outlet and the power steering gear; the emergency valve (2) being configured to transmit the power steering oil at the outlet of the main oil pump to the power steering gear to complete the steering assistance; the two ends of the first oil passage being provided with a first oil inlet (21) and an oil outlet (22), the first oil inlet (21) being connected to the outlet of the main oil pump, the oil outlet (22) being connected to the power steering gear, the first oil inlet (21) and the oil outlet (22) being respectively arranged on both sides of the driving mechanism (1); An emergency pump (3), wherein the power input end of the emergency pump (3) is connected to the power output end of the drive mechanism (1); the emergency valve (2) is arranged at one end of the housing (11) facing the emergency pump (3) and is connected and fixed to the emergency pump (3) via a connecting piece (5); a second oil passage is arranged inside the emergency pump (3), the second oil passage is connected to the first oil passage, the end of the second oil passage away from the first oil passage is a second oil inlet (31), and the second oil inlet (31) is connected to a power steering oil tank; the drive mechanism (1) is capable of driving the emergency pump (3) to work so that the emergency pump (3) provides the power steering gear with the power steering oil to complete the emergency steering assistance; When the main oil pump operates normally, the power steering oil enters the power steering gear through the first oil passage to complete the power steering; When the main oil pump fails, the driving mechanism (1) starts and drives the emergency pump (3) to work, and the power steering oil enters the first oil passage through the second oil passage and then enters the power steering gear to complete the emergency steering assistance; The first oil passage is provided with a flow detector (4), and when the flow detected by the flow detector (4) is less than a set threshold value, the driving mechanism (1) starts to drive the emergency pump (3) to work.

2. The commercial vehicle emergency steering power device according to claim 1, characterized in that: The driving mechanism (1) is a DC driving motor.

3. The commercial vehicle emergency steering power device according to claim 1, characterized in that: The housing (11) of the driving mechanism (1) is provided with a plurality of mounting studs (13), the mounting studs (13) being connected to a vehicle body longitudinal beam (6), each mounting stud (13) being provided with a shock absorbing pad (14), the two ends of the shock absorbing pad (14) respectively abutting against the housing (11) and the vehicle body longitudinal beam (6).

4. The commercial vehicle emergency steering power device according to claim 1, characterized in that: The driving mechanism (1) is provided with a motor power interface (15) and a signal interface (16); the motor power interface (15) is connected to a vehicle power supply, and the signal interface (16) is connected to a vehicle signal line.

5. A commercial vehicle, characterized in that: It comprises the commercial vehicle emergency steering power device according to any one of claims 1 to 4, wherein the commercial vehicle emergency steering power device is fixedly mounted on a vehicle body longitudinal beam (6).

6. The commercial vehicle according to claim 5, characterized in that: It also comprises a bracket (7), the bracket (7) is L-shaped, one end of the bracket (7) is connected to the commercial vehicle emergency steering power device, and the other end is connected to the vehicle body longitudinal beam (6).

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