Steering control system of automobile carrier

Abstract

The utility model relates to the technical field of molten iron transportation equipment, and provides a vehicle steering control system which comprises a vehicle frame, a support arranged below the vehicle frame, a wheel set assembly connected to the support and a driving assembly for driving the wheel set assembly to conduct steering motion. The multiple supports, the multiple wheel set assemblies and the multiple driving motors are arranged in the length direction and the width direction of the vehicle frame at intervals. The driving assembly comprises a rotary support rotationally connected to the upper surface of the support and a rack oil cylinder connected with the frame, the rotary support comprises an inner ring and an outer ring which rotate relatively, the inner ring is connected with the frame, the outer ring is connected with the support to drive the wheel set assembly to steer, and a rack in the rack oil cylinder is meshed with the outer ring. The wheel set has the beneficial effect that the phenomenon of relative sliding of the wheel sets is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of molten iron transportation equipment, and in particular to a steering control system for a motor vehicle. Background Art

[0002] The molten iron truck is a special molten iron transportation equipment, mainly used for the transfer and transportation of molten iron in steel enterprises. The driving, lifting and steering of the molten iron truck adopts the "mechanical-electrical-hydraulic" integrated control and transmission form. The truck can turn in multiple modes, and can realize steering modes such as straight driving, reverse driving and eight-shaped steering.

[0003] In the prior art, a vehicle steering control system generally uses a connecting rod structure to connect several wheel sets. Figure 1 As shown, when turning, the connecting rod structure is used so that the steering angles of all wheels are the same. However, in actual use, the positions of the wheels are actually different. If the steering angle is the same, relative sliding may occur between the wheels and the ground, so further improvement is needed. Utility Model Content

[0004] In order to reduce the relative slippage of the wheels, the present application provides a steering control system for a motor vehicle.

[0005] The present application provides a vehicle steering control system, which adopts the following technical solution:

[0006] A steering control system for a motor vehicle comprises a frame, a bracket arranged below the frame, a wheel assembly connected to the bracket, and a driving assembly for driving the wheel assembly to steer, wherein a plurality of the brackets, wheel assemblies, and driving motors are arranged at intervals along the length and width directions of the frame; the driving assembly comprises a slewing support rotatably connected to the upper surface of the bracket and a rack cylinder connected to the frame, the slewing support comprises an inner ring and an outer ring that rotate relative to each other, the inner ring being connected to the frame, the outer ring being connected to the bracket to drive the wheel assembly to steer, and a rack in the rack cylinder meshing with the outer ring.

[0007] By adopting the above technical solution, by correspondingly arranging a number of brackets, wheel assembly assemblies and drive assemblies so that one wheel assembly corresponds to one drive assembly, each wheel assembly adopts a separate drive assembly, and the drive assembly adopts a rack cylinder to drive the slewing support, the rotation angles of several wheel assembly assemblies can be different, so as to reduce the possibility of relative sliding of the wheel assembly during use.

[0008] Preferably, the drive assembly also includes a displacement sensor arranged on the rack cylinder, a controller electrically connected to the displacement sensor, and a variable pump electrically connected to the controller, the variable pump is used to provide oil to the rack cylinder, the displacement sensor is used to measure the steering angle of the slewing support, the controller is electrically connected to a central control platform for transmitting steering angle commands and data to the controller, and the displacement sensor is electrically connected to the central control platform.

[0009] By adopting the above technical solution, when steering is required, after the driver gives a steering signal, the central control platform calculates the steering angle required for the wheel assembly at each position, thereby calculating the required oil supply for each rack cylinder. After the calculation is completed, the variable pump is controlled by the central control platform to supply the required oil amount to the rack cylinder, thereby realizing the steering of the wheel assembly. The displacement sensor is set to feed back the actual steering angle of the slewing support to the control platform, and through calculation, it is adjusted to relatively accurately control the steering angle of the slewing support, thereby reducing the relative sliding of the wheel assembly.

[0010] Preferably, the length direction of the rack cylinder is parallel to the radial direction of the slewing support.

[0011] By adopting the above technical solution, if the rack cylinder or other driving sources parallel to the axial direction of the slewing support, such as a driving motor, are close to the ground and the molten iron truck is traveling on a relatively rugged ground, the rack cylinder may be damaged. Therefore, the length direction of the rack cylinder is parallel to the radial direction of the slewing support, so that the rack cylinder and the slewing support are located on the upper surface of the bracket, raising the distance between them and the ground, and reducing the impact on the steering of the wheel assembly.

[0012] Preferably, the bracket is provided with a protective cover which covers the rack cylinder and the slewing support, and the protective cover is detachably connected to the bracket.

[0013] By adopting the above technical solution and providing an anti-skid cover, the amount of mud and sand carried by the wheel assembly onto the rack cylinder and the slewing support, or the meshing position between the two during driving can be reduced, thereby reducing the impact on the transmission and service life between the two; and the protective cover is detachably connected to the bracket, so that most of the mud and water can be kept outside, which can reduce the difficulty and time of cleaning during maintenance, thereby improving maintenance efficiency.

[0014] Preferably, the protective cover includes two protective plates arranged opposite to each other and two connecting members respectively arranged at both ends of the protective plates to be connected to the bracket, the upper end surface of the protective plate abuts against the lower surface of the frame, and the lower end surface of the protective plate abuts against the upper end surface of the bracket.

[0015] By adopting the above technical solution, two protective plates are installed through connecting parts to form a protective cover. Since the upper end surface and the lower end surface of the protective plate are respectively abutted against the lower surface of the frame and the upper surface of the bracket, the driving component is protected. The protective cover is removed from the bracket through the connecting parts and the mounting part for disassembly and maintenance.

[0016] Preferably, both ends of the protective plate are protrudingly provided with plug plates, two adjacent plug plates are overlapped, the plug plate away from the rack cylinder is penetrated by a through hole, and the connecting member is a screw rod penetrated by the through hole and threadedly connected to the other plug plate.

[0017] By adopting the above technical solution, after the plug plates on the two protective plates are overlapped with each other, a screw rod is passed through one of the plug plates with a through hole and then threadedly connected to the other plug plate to install the protective plate.

[0018] Preferably, the bracket is protrudingly provided with a mounting portion for installing the connecting piece, and the mounting portions are provided with two and are respectively arranged at both ends of the protective plate, and the mounting portion is penetrated through the side wall of the protective plate close to the protective plate to provide a slot for inserting the plug plate, and the overlapping plug plates are penetrated with through holes, and the screw is threadedly connected to the inner wall of the slot.

[0019] By adopting the above technical solution and providing a mounting portion, the connection strength between the protective cover and the vehicle body or the bracket is improved, thereby reducing the possibility of relative slippage due to external forces.

[0020] Preferably, the connecting member also includes a sliding rod that is slidably inserted into the through hole, a spring that is coaxially sleeved on the outer peripheral wall of the sliding rod, and a force block arranged on the sliding rod, the mounting portion is provided with a sliding groove that is connected to the slot, the sliding rod is slidably connected to the sliding groove, the mounting portion is located in the sliding groove and is protruding with a fixing plate, the two ends of the spring are respectively fixedly connected to the surfaces of the force block and the fixing plate that are close to each other, the slot is provided with a limiting hole on the inner wall away from the sliding groove, the spring forces the sliding rod to move in the direction of the limiting hole, and the mounting portion is provided with a slot for the force block to slide and engage.

[0021] By adopting the above technical solution, a force is applied to the force block to drive the limit rod to slide out of the limit hole. At this time, the insertion block is slidably inserted into the slot. When the limit rod and the through hole and the limit hole correspond to each other, the spring forces the limit rod to slide and be inserted into the limit hole to limit the protective plate from sliding out of the mounting part. By providing a spring, the installation efficiency between the mounting part and the insertion plate can be accelerated, thereby reducing the time spent on maintenance work.

[0022] Preferably, a rubber pad is built into the card slot, and an outer peripheral wall of the force applying block is provided with anti-slip grooves.

[0023] By adopting the above technical solution, the rubber pad and the anti-skid pattern can reduce the possibility of relative slippage caused by external force when the force block is slidably engaged in the slot, thereby improving the fixing effect of the force block.

[0024] Preferably, the connecting member further comprises a magnetic block magnetically attracted to the force applying block.

[0025] By adopting the above technical solution, the slot can be made relatively deep, thereby reducing the possibility that the force block will slip out of the slot when subjected to external vibration or other forces.

[0026] In summary, the utility model has the following beneficial effects:

[0027] 1. By correspondingly arranging a plurality of brackets, wheel assemblies and drive assemblies so that one wheel assembly corresponds to one drive assembly, each wheel assembly adopts a separate drive assembly, and the drive assembly adopts a rack cylinder to drive the slewing support, the rotation angles of the plurality of wheel assemblies can be different, so as to reduce the possibility of relative sliding of the wheel assemblies during use.

[0028] 2. By providing a displacement sensor, a controller and a variable pump, the steering angle accuracy of the slewing support is further improved, thereby further reducing the relative sliding of the wheel set.

[0029] 3. By providing an anti-skid cover, the mud and sand carried by the wheel assembly during driving can be reduced to the rack cylinder and the slewing support, thereby reducing the impact on the transmission and service life between the two; and the protective cover can be detachably connected to the bracket to improve the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of a wheel set and a connecting rod in the prior art;

[0031] Figure 2 is a schematic diagram of the structure of Example 1 of the present application;

[0032] Figure 3 is a side structural schematic diagram of the driving assembly in Example 1 of the present application;

[0033] Figure 4 is a schematic diagram of the top view of the driving assembly in Example 1 of the present application;

[0034] Figure 5 is a schematic side view of the protective cover in Example 2 of the present application;

[0035] Figure 6 is a schematic diagram of the top view of the connecting member in Example 2 of the present application;

[0036] Figure 7is a schematic diagram of the top view of the connecting member in Example 3 of the present application;

[0037] Figure 8 It is a schematic diagram of the top view structure of the connecting piece in Example 4 of the present application.

[0038] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Connecting rod; 12. Bracket; 13. Mounting portion; 131. Slot; 132. Slide; 133. Limiting hole; 134. Slot; 135. Rubber pad; 2. Wheel assembly; 3. Drive assembly; 31. Slewing support; 311. Inner ring; 312. Outer ring; 32. Rack cylinder; 33. Displacement sensor; 34. Variable pump; 4. Protective cover; 41. Protective plate; 411. Insert plate; 412. Perforation; 42. Connector; 421. Screw; 422. Slide; 423. Spring; 424. Force block; 425. Magnetic block. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 , further details of this application are given.

[0040] The embodiment of the present application discloses a steering control system for a motor vehicle.

[0041] Embodiment 1:

[0042] A steering control system for a motor vehicle, referring to Figure 2 , Figure 3 , including a frame 1, a bracket 12 arranged under the frame 1, a wheel assembly 2 connected to the bracket 12, and a driving assembly 3 for driving the wheel assembly 2 to turn. In this embodiment, the bracket 12, the wheel assembly 2 and the driving motor are arranged at intervals along the length and width directions of the frame 1.

[0043] Reference Figure 3 , Figure 4 , wherein the driving assembly 3 includes a slewing support 31 rotatably connected to the upper surface of the bracket 12, a rack cylinder 32 fixedly connected to the frame 1, a displacement sensor 33 disposed on the rack cylinder 32, a controller (not shown) electrically connected to the displacement sensor 33, and a variable pump 34 electrically connected to the controller. In this embodiment, the slewing support 31 includes an inner ring 311 and an outer ring 312 that rotate relatively, the inner ring 311 is fixedly connected to the frame 1, and the outer ring 312 is fixedly connected to the bracket 12. The rack cylinder 32 is started to drive the driving gear to rotate, thereby driving the wheel assembly 2 to turn, and the rack in the rack cylinder 32 is meshed with the outer ring 312.

[0044] It should be noted that, in this embodiment, the length direction of the rack cylinder 32 is parallel to the radial direction of the slewing support 31 to reduce the possibility of collision between the rack cylinder 32 and the ground when the height of the lower end is lower than the height of the bracket 12.

[0045] Among them, the displacement sensor 33 is used to measure the steering angle of the slewing support 31. The controller is electrically connected to a central control platform for transmitting steering angle commands and data to the controller. The displacement sensor 33 is electrically connected to the central control platform (not shown in the figure), and the variable pump 34 is used to provide oil to the rack cylinder 32.

[0046] The implementation principle of a steering control system for a motor vehicle in an embodiment of the present application is as follows: when steering is required, after the driver gives a steering signal, the central control platform calculates the steering angle required for the wheel assembly 2 at each position, thereby calculating the required oil supply for each rack cylinder 32. After the calculation is completed, the central control platform controls the variable pump 34 to supply the required oil amount to the rack cylinder 32, thereby realizing the steering of the wheel assembly. The displacement sensor 33 is set to feed back the actual steering angle of the slewing support 31 to the control platform, and through calculation, it is adjusted to relatively accurately control the steering angle of the slewing support 31, thereby reducing the relative sliding of the wheel assembly.

[0047] Embodiment 2:

[0048] Reference Figure 5 , Figure 6 , which is different from Example 1, is that a protective cover 4 is provided on the bracket 12 and covers the rack cylinder 32 and the slewing support 31. The protective cover 4 is detachably connected to the bracket 12. Specifically, the protective cover 4 includes two protective plates 41 arranged opposite to each other and two connecting members 42 respectively arranged at both ends of the protective plate 41 to be connected to the bracket 12. The upper end surface of the protective plate 41 abuts against the lower surface of the frame 1, and the lower end surface of the protective plate 41 abuts against the upper end surface of the bracket 12.

[0049] Both ends of the protective plate 41 are provided with protruding plug plates 411, and two adjacent plug plates 411 are overlapped, and the plug plates 411 are provided with through holes 412 along the thickness direction thereof. In this embodiment, the connecting member 42 is a screw 421 that is slidably provided in the through hole 412. The bracket 12 is provided with a protruding mounting portion 13 for mounting the connecting member 42. In this embodiment, two mounting portions 13 are provided and are respectively provided at both ends of the protective plate 41. The side wall of the mounting portion 13 close to the protective plate 41 is provided with a slot 131 for inserting the plug plate 411, and at this time, the screw 421 is threadedly connected to the inner wall of the slot 131.

[0050] Embodiment 3:

[0051] Reference Figure 7, which is different from Example 2, is that the connecting member 42 includes a sliding rod 422 that is slidably arranged in the through hole 412, a spring 423 that is coaxially sleeved on the outer peripheral wall of the sliding rod 422, and a force block 424 that is fixedly connected to one end of the sliding rod 422 away from the mounting portion 13, the mounting portion 13 is provided with a sliding groove 132 that is connected to the slot 131, the sliding rod 422 is slidably connected to the sliding groove 132, the mounting portion 13 is located in the sliding groove 132 and a fixing plate is protruded and fixed, the two ends of the spring 423 are respectively fixedly connected to the surfaces of the force block 424 and the fixing plate that are close to each other, the inner wall of the slot 131 away from the sliding groove 132 is provided with a limiting hole 133, the spring 423 forces the sliding rod 422 to move in the direction of the limiting hole 133, and the mounting portion 13 is provided with a slot 134 for the force block 424 to slide and embed.

[0052] Embodiment 4:

[0053] Reference Figure 8 The difference from Example 2 is that a rubber pad 135 is built into the slot 134 , an anti-slip groove is provided on the outer peripheral wall of the force block 424 , and the connecting member 42 further includes a magnetic block 425 magnetically attracted to the force block 424 .

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steering control system for a motor vehicle, characterized in that: The invention comprises a vehicle frame (1), a bracket (12) arranged below the vehicle frame (1), a wheel assembly (2) connected to the bracket (12), and a driving assembly (3) for driving the wheel assembly (2) to steer, wherein a plurality of the bracket (12), the wheel assembly (2), and the driving motor are arranged at intervals along the length direction and the width direction of the vehicle frame (1); the driving assembly (3) comprises a slewing support (31) rotatably connected to the upper surface of the bracket (12) and a rack cylinder (32) connected to the vehicle frame (1), the slewing support (31) comprising an inner ring (311) and an outer ring (312) rotatable relative to each other, the inner ring (311) being connected to the vehicle frame (1), the outer ring (312) being connected to the bracket (12) to drive the wheel assembly (2) to steer, and a rack in the rack cylinder (32) being meshed with the outer ring (312).

2. A vehicle steering control system according to claim 1, characterized in that: The drive assembly (3) further comprises a displacement sensor (33) arranged on the rack cylinder (32), a controller electrically connected to the displacement sensor (33), and a variable pump (34) electrically connected to the controller, wherein the variable pump (34) is used to supply oil to the rack cylinder (32), the displacement sensor (33) is used to measure the steering angle of the slewing support (31), the controller is electrically connected to a central control platform for transmitting steering angle commands and data to the controller, and the displacement sensor (33) is electrically connected to the central control platform.

3. A vehicle steering control system according to claim 1, characterized in that: The length direction of the rack cylinder (32) is parallel to the radial direction of the slewing support (31).

4. A steering control system for a motor vehicle according to claim 3, characterized in that: The support (12) is provided with a protective cover (4) which covers the rack oil cylinder (32) and the slewing support (31); the protective cover (4) is detachably connected to the support (12).

5. A vehicle steering control system according to claim 4, characterized in that: The protective cover (4) comprises two protective plates (41) arranged opposite to each other and two connecting members (42) respectively arranged at two ends of the protective plates (41) for connecting to the bracket (12); the upper end surface of the protective plate (41) abuts against the lower surface of the vehicle frame (1), and the lower end surface of the protective plate (41) abuts against the upper end surface of the bracket (12).

6. A steering control system for a motor vehicle according to claim 5, characterized in that: Both ends of the protection plate (41) are provided with plug plates (411) protruding therefrom, and two adjacent plug plates (411) are overlapped and arranged, and a through hole (412) is formed through the plug plate (411) away from the rack cylinder (32), and the connecting member (42) comprises a screw rod (421) which is provided through the through hole (412) and is threadedly connected to the other plug plate (411).

7. A vehicle steering control system according to claim 6, characterized in that: The bracket (12) is provided with a mounting portion (13) protruding therefrom for mounting the connecting member (42); two mounting portions (13) are provided and are respectively arranged at two ends of the protective plate (41); a slot (131) for inserting the plug plate (411) is provided through a side wall of the mounting portion (13) close to the protective plate (41); a through hole (412) is provided through the overlapping plug plates (411); and the screw rod (421) is threadedly connected to the inner wall of the slot (131).

8. A vehicle steering control system according to claim 7, characterized in that: The connecting member (42) further comprises a slide rod (422) slidably disposed in the through hole (412), a spring (423) coaxially sleeved on the outer peripheral wall of the slide rod (422), and a force block (424) disposed on the slide rod (422); the mounting portion (13) is provided with a slide groove (132) connected to the slot (131); the slide rod (422) is slidably connected to the slide groove (132); the mounting portion (13) is located in the slide groove (132) ) is provided with a fixing plate protruding therein, the two ends of the spring (423) are respectively fixedly connected to the surfaces of the force block (424) and the fixing plate which are close to each other, the inner wall of the slot (131) is provided with a limiting hole (133) away from the slide groove (132), the spring (423) forces the slide rod (422) to move in the direction of the limiting hole (133), and the mounting portion (13) is provided with a slot (134) for the force block (424) to slide and engage.

9. A vehicle steering control system according to claim 8, characterized in that: The slot (134) has a built-in rubber pad (135), and the outer peripheral wall of the force-applying block (424) is provided with anti-slip grooves.

10. A vehicle steering control system according to claim 8, characterized in that: The connecting member (42) further comprises a magnetic attraction block (425) magnetically attracted to the force applying block (424).

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