Double-wheel electric differential rudder with hydraulic suspension

Abstract

The utility model discloses a double-wheel electric differential rudder with hydraulic suspension belongs to electric differential rudder related technical field, can realize the advantage containing electric differential rudder, such as installation height is low, the turning radius is small, the steering precision is high, the power is strong etc.

Description

Technical Field

[0001] This utility model relates to the technical field of differential steering wheels, and in particular to a dual-wheel electric differential steering wheel with hydraulic suspension. Background Technology

[0002] The hydraulic suspension dual-wheel electric differential steering wheel assembly, as a core component of electric industrial vehicles, integrates key parts such as the hydraulic suspension mechanism, travel motor, gearbox, wheels, and slewing bearings, determining the overall power and handling performance of the vehicle. Currently, heavy-duty steering wheels are widely used in logistics and emerging industrial sectors, requiring not only high load capacity but also the ability to maintain vehicle stability when traversing obstacles. Some industries require vehicles to operate at different heights, necessitating a steering wheel with a lifting function.

[0003] Existing steering wheels in the prior art have poor stability when crossing obstacles, and are limited by height, preventing them from operating at different heights. Utility Model Content

[0004] This invention provides a dual-wheel electric differential steering wheel with hydraulic suspension, aiming to solve the above-mentioned technical problems.

[0005] The specific technical solution provided by this utility model is as follows: This utility model provides a dual-wheel electric differential steering wheel with hydraulic suspension, comprising a plunger-type hydraulic mechanism 101, a drag chain protection assembly 102, a reducer 201, a travel motor 202, a wheel hub 203, a hinge mounting base 204, a connecting plate 205, a wheel 206, a cover 207, a housing 208, a hinge shaft 209, a mounting base 301, a wire encoder 302, an encoder 303, an encoder base 401, a rotary pinion 402, a hinge 403, a rotary gear 404, a bracket 405, and a limit switch mounting base 406. 6. Limit switch 407, driver bracket 408, travel motor driver 409, limit plate 501, and pull-wire encoder fixing plate 502. Among them, the cover 207 and the housing 208 form a gearbox, and the gearbox and the wheel 206 form a drive unit. The two drive units are connected together by the hinge fixing seat 204 and the connecting plate 205. The piston-type hydraulic mechanism 101 has hinge shafts 209 welded on both sides. The hinge fixing seat 204 is installed on the hinge shaft 209 through a lubricating sleeve. The cover 207 is installed on the hinge fixing seat 204.

[0006] Optionally, the housing 208 and the cover 207 are connected by bolts. The housing 208 is equipped with a two-stage reduction gear set. A reducer 201 is installed on one side of the housing 208, and a travel motor 202 is installed at the input end of the reducer 201. A wheel 206 is installed on the other side of the housing 208 through a wheel hub 203.

[0007] Optionally, a mounting seat 301 is installed on the plunger in the plunger-type hydraulic mechanism 101. The mounting seat 301 is fixed to the vehicle body. The lifting and lowering of the vehicle body is controlled by the lifting of the plunger in the plunger-type hydraulic mechanism 101, and the lifting height is controlled by the pull-wire encoder 302.

[0008] Optionally, the inner ring of the rotary gear 404 is mounted on the cylinder of the piston-type hydraulic mechanism 101, the encoder seat 401 is mounted on the cylinder of the piston-type hydraulic mechanism 101, the encoder 303 is mounted on the encoder seat 401, and a rotary pinion 402 is mounted on the encoder 303; the two ends of the hinge 403 are respectively mounted on the mounting base 301 and the outer ring of the rotary gear 404, and the outer ring of the rotary gear 404 is fixed by the connection of the hinge 403.

[0009] Optionally, bracket 405 is mounted on connecting plate 205, limit switch mounting base 406 is mounted on bracket 405, two limit switches 407 are mounted on limit switch mounting base 406, a travel motor driver bracket 408 is mounted on the connecting plate 205 on the side where bracket 405 is mounted, and travel motor 202 is connected to travel motor driver 409.

[0010] Optionally, the inner ring of the rotary gear 404 is mounted on the cylinder of the piston-type hydraulic mechanism 101, and the outer ring of the rotary gear 404 is fixed by the hinge 403. A limit plate 501 is mounted on the outer ring of the rotary gear 404, and the limit plate 501 is used in conjunction with the limit switch 407.

[0011] This utility model has the following beneficial technical effects: This utility model provides a dual-wheel electric differential steering wheel with hydraulic suspension. It is a drive steering wheel assembly with hydraulic suspension, achieving the advantages of an electric differential steering wheel, such as low installation height, small turning radius, high steering accuracy, and strong power. It also features suspension damping and lifting functions, serving as the power actuator for lifting the entire drive system. Combined with position detection components, it enables active and fixed-point lifting of the entire drive system. It is equipped with two gearboxes, each with independent drive capability. It uses dual servo drive motors, without a steering motor. During steering, the drive motors are precisely controlled by a program algorithm to achieve differential steering. It not only meets the requirements of existing steering wheels in the market, such as low installation height and high load capacity, but also features hydraulic lifting and hydraulic damping. The hydraulic suspension mechanism allows the steering wheel to adjust its working height to meet different operational needs. Furthermore, it can be used as a hydraulic suspension system to stabilize the vehicle body, making it more suitable for the development needs of logistics and industrial sectors. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the isometric structure of a dual-wheel electric differential steering wheel with hydraulic suspension according to an embodiment of the present invention. Figure 2 This is a front view schematic diagram of a dual-wheel electric differential steering wheel with hydraulic suspension according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of another isometric structure of a dual-wheel electric differential steering wheel with hydraulic suspension according to an embodiment of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] The following will combine Figures 1-3 A detailed description of a dual-wheel electric differential steering wheel with hydraulic suspension according to an embodiment of the present invention is provided.

[0016] refer to Figure 1 , Figure 2 , Figure 3As shown in the figure, the dual-wheel electric differential steering wheel with hydraulic suspension provided in this embodiment of the present invention includes a plunger-type hydraulic mechanism 101, a drag chain protection assembly 102, a reducer 201, a travel motor 202, a wheel hub 203, a hinge fixing seat 204, a connecting plate 205, a wheel 206, a cover 207, a housing 208, a hinge shaft 209, a mounting base 301, a wire encoder 302, an encoder 303, an encoder seat 401, a rotary pinion 402, a hinge 403, a rotary gear 404, a bracket 405, and a limit switch mounting. The system includes a base 406, a limit switch 407, a driver bracket 408, a travel motor driver 409, a limit plate 501, and a wire encoder fixing plate 502. The cover 207 and the housing 208 form a gearbox, and the gearbox and the wheel 206 form a drive unit. The two drive units are connected together by a hinged fixing seat 204 and a connecting plate 205. The piston-type hydraulic mechanism 101 has hinge shafts 209 welded on both sides. The hinge fixing seat 204 is installed on the hinge shaft 209 through a lubricating sleeve, and the cover 207 is installed on the hinge fixing seat 204.

[0017] This utility model provides a dual-wheel electric differential steering wheel with hydraulic suspension, comprising a plunger-type hydraulic mechanism 101, a drive unit, and a drag chain protection assembly 102. The drive unit is located on both sides of the hydraulic suspension mechanism. The drive unit consists of a reduction gearbox and wheels 206. The reduction gearbox includes a housing 208 and a cover 207, which are bolted together. The housing 208 contains a two-stage reduction gear set. Wheels 206 are mounted on one side of the housing 208 via hubs 203, and a reducer 201 is mounted on the other side of the housing 208. A travel motor 202 is mounted on the input end of the reducer 201. Two drive units are connected together via a hinged mounting base 204 and a connecting plate 205. The connecting plate 205 is directly mounted on the upper side of the cover 207 and connected with screws. Hinges 209 are welded to both sides of the plunger-type hydraulic mechanism 101. The hinged mounting base 204 is rotatably mounted on the hinged shaft 209 via a lubricating sleeve. The cover 207 is mounted on the hinged mounting base 204. At this time, the two drive units form the drive part. This connection method forms a rocking bridge structure. The drive part and the plunger-type hydraulic mechanism 101 are combined together via the rocking bridge structure. When the travel motor 202 rotates, it drives the two-stage reduction gear set to rotate through the reducer 201. The rotation of the gears drives the output shaft, which is splined and mounted on the two-stage reduction gear set, to rotate, thereby rotating the wheel 206 and driving the steering wheel assembly to move.

[0018] In this embodiment of the utility model, the plunger-type hydraulic mechanism 101 has a mounting seat 301 installed on the plunger. The mounting seat 301 is fixed to the vehicle body. The lifting of the vehicle body is controlled by the lifting of the plunger in the plunger-type hydraulic mechanism 101. The lifting height is controlled by the pull-wire encoder 302. This function can also realize hydraulic shock absorption. When passing through uneven road surfaces, the stability of the vehicle body is maintained by controlling the plunger-type hydraulic mechanism 101.

[0019] The inner ring of the rotary gear 404 is mounted on the cylinder of the piston-type hydraulic mechanism 101. The encoder seat 401 is mounted on the cylinder of the piston-type hydraulic mechanism 101. The encoder 303 is mounted on the encoder seat 401, and a rotary pinion 402 is mounted on the encoder 303. The two ends of the hinge 403 are respectively mounted on the mounting base 301 and the outer ring of the rotary gear 404. The outer ring of the rotary gear 404 is fixed by the hinge 403. The hinge 403 is foldable. When the hydraulic mechanism is working, the hinge 403 can be height adjusted by raising and lowering the mounting base 301. The bracket 405 is mounted on a connecting plate 205 on one side. The limit switch mounting base 406 is mounted on the bracket 405. Two limit switches 407 are mounted on the limit switch mounting base 406. A travel motor driver bracket 408 is mounted on a connecting plate 205 on one side of the mounting bracket, connecting the travel motor 202 and the travel motor driver 409. The mounting base 301 is mounted on the vehicle body. When the steering wheel turns, the plunger of the plunger-type hydraulic mechanism 101 remains stationary while the cylinder moves. At this time, the drive unit rotates around the plunger-type hydraulic mechanism 101, thereby realizing the steering function. During rotation, the speed difference and forward / reverse rotation of the travel motors 202 in the two drive units are precisely controlled by the controller to achieve the steering angle required by the steering wheel and realize the rotation of the steering wheel. The rotary pinion 402 mounted on the encoder 303 rotates around the outer ring of the rotary bearing 404 when the steering wheel assembly rotates, thereby detecting the steering position.

[0020] The inner ring of the rotary gear 404 is mounted on the cylinder of the piston-type hydraulic mechanism 101. The outer ring of the rotary gear 404 is fixed in place by the hinge 403. A limit plate 501 is installed on the outer ring of the rotary gear 404. The limit plate 501 works in conjunction with the limit switch 407 and is controlled by the controller to limit a certain steering angle. The wire encoder 302 is connected to the upper side of the hinge 403 by screws through the wire encoder fixing plate 502. The bottom of the measuring wire of the wire encoder 302 is fixed to the lower side of the hinge 403. When the piston-type hydraulic mechanism 101 is lifted, the hinge 403 unfolds, and the wire encoder 302 stretches as the hinge 403 unfolds. When it is lifted to a certain height, the wire encoder 302 generates an electrical signal, and the height can be controlled by the controller.

[0021] The cable chain protection component is installed on the connecting bracket, located above the limit switch 407. It wraps all protruding cables with the cable chain to protect them from collisions and friction with other parts, ensuring the safest bending angle for the cables.

[0022] This utility model provides a dual-wheel electric differential steering wheel with hydraulic suspension. It is a drive steering wheel assembly with hydraulic suspension, achieving the advantages of an electric differential steering wheel, such as low installation height, small turning radius, high steering accuracy, and strong power. It also features suspension damping and lifting functions, serving as the power actuator for lifting the entire drive system. Combined with position detection components, it enables active and fixed-point lifting of the entire drive system. It is equipped with two gearboxes, each with independent drive capability. It uses dual servo drive motors, without a steering motor. During steering, the drive motors are precisely controlled by a program algorithm to achieve differential steering. It not only meets the requirements of existing steering wheels in the market, such as low installation height and high load capacity, but also features hydraulic lifting and hydraulic damping. The hydraulic suspension mechanism allows the steering wheel to adjust its working height to meet different operational needs. Furthermore, it can be used as a hydraulic suspension system to stabilize the vehicle body, making it more suitable for the development needs of logistics and industrial sectors.

[0023] This utility model provides a dual-wheel electro-differential steering wheel with hydraulic suspension. For materials with height differences, the hydraulic mechanism enables material transfer without the need to change work vehicles or use lifting equipment, significantly increasing work efficiency. The plunger-type hydraulic mechanism can serve as a hydraulic suspension. When encountering uneven terrain, the vehicle height can be adjusted via a hydraulic lifting mechanism, ensuring that the industrial vehicle mounted on the steering wheel remains at the same level, further reducing the steering wheel's requirements for ground flatness. This utility model provides a dual-wheel electro-differential steering wheel with hydraulic suspension, employing a plunger-type hydraulic lifting mechanism with an ultra-large cylinder diameter, capable of withstanding a certain degree of radial force; it has stronger load-bearing capacity and greater stability. Its swing bridge structure connection allows the two drive parts of the steering wheel assembly to swing at a certain angle, giving the steering wheel a certain ability to maintain its own stability. The differential structure ensures that the steering wheel experiences rolling friction rather than static friction with the ground when turning in place, minimizing damage to the ground and the wheels, greatly extending wheel lifespan.

[0024] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. A dual-wheel electric differential steering wheel with hydraulic suspension, characterized in that, The dual-wheel electric differential steering wheel includes a plunger-type hydraulic mechanism (101), a drag chain protection assembly (102), a reducer (201), a travel motor (202), a wheel hub (203), a hinge mounting base (204), a connecting plate (205), a wheel (206), a cover (207), a housing (208), a hinge shaft (209), a mounting base (301), a wire encoder (302), an encoder (303), an encoder base (401), a rotary pinion (402), a hinge (403), a rotary gear (404), a bracket (405), and a limit switch mounting base (406). Position switch (407), driver bracket (408), walking motor driver (409), limit plate (501), and pull-wire encoder fixing plate (502). Among them, the cover (207) and the box body (208) form a gearbox, and the gearbox and the wheel (206) form a drive unit. The two drive units are connected together by the hinge fixing seat (204) and the connecting plate (205). The piston hydraulic mechanism (101) has hinge shafts (209) welded on both sides. The hinge fixing seat (204) is installed on the hinge shaft (209) through a lubrication sleeve. The cover (207) is installed on the hinge fixing seat (204).

2. The dual-wheel electric differential steering wheel according to claim 1, characterized in that, The housing (208) and the cover (207) are connected by bolts. The housing (208) is equipped with a two-stage reduction gear set. A reducer (201) is installed on one side of the housing (208). The walking motor (202) is installed at the input end of the reducer (201). The other side of the housing (208) is equipped with a wheel (206) through a wheel hub (203).

3. The dual-wheel electric differential steering wheel according to claim 2, characterized in that, The piston in the plunger-type hydraulic mechanism (101) is equipped with a mounting seat (301), which is fixed to the vehicle body. The lifting and lowering of the vehicle body is controlled by the lifting of the piston in the plunger-type hydraulic mechanism (101), and the lifting height is controlled by the pull-wire encoder (302).

4. The dual-wheel electric differential steering wheel according to claim 3, characterized in that, The inner ring of the rotary gear (404) is mounted on the cylinder of the piston-type hydraulic mechanism (101), the encoder seat (401) is mounted on the cylinder of the piston-type hydraulic mechanism (101), the encoder (303) is mounted on the encoder seat (401), and a rotary pinion (402) is mounted on the encoder (303); the two ends of the hinge (403) are respectively mounted on the mounting base (301) and the outer ring of the rotary gear (404), and the outer ring of the rotary gear (404) is fixed by the connection of the hinge (403).

5. The dual-wheel electric differential steering wheel according to claim 4, characterized in that, The bracket (405) is mounted on the connecting plate (205), the limit switch mounting base (406) is mounted on the bracket (405), and two limit switches (407) are mounted on the limit switch mounting base (406). The walking motor driver bracket (408) is mounted on the connecting plate (205) on the side where the bracket (405) is mounted, and the walking motor (202) is connected to the walking motor driver (409).

6. The dual-wheel electric differential steering wheel according to claim 5, characterized in that, The inner ring of the rotary gear (404) is mounted on the cylinder of the piston-type hydraulic mechanism (101). The outer ring of the rotary gear (404) is fixed by a hinge (403). A limit plate (501) is mounted on the outer ring of the rotary gear (404). The limit plate (501) and the limit switch (407) work together.

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