Bridge type direct-drive double-differential-wheel unit

Abstract

The utility model relates to the technical field of heavy-load driving, in particular to a bridge type direct-drive double-differential-wheel unit which comprises a unit body, and the unit body comprises a heavy-load speed reduction assembly, a driving assembly and a rubber coating wheel assembly. The heavy load speed reduction assembly comprises a wheel side support axially fixed to the rubber coating wheel assembly, a planet support connected with the wheel side support, a planet gear supported on the planet support through a tapered roller bearing, a gear ring connected with a motor shaft of the driving assembly and a gear ring seat. The bridge type direct-drive double-differential-wheel unit is compact in structure, the hub is easy to replace, load is even, and detection and measurement are more accurate. The diversity and application of the double-differential wheel are far greater than those of the existing product, so that the double-differential wheel can be popularized and applied to occasions with relatively narrow space and relatively special vehicle types, and is particularly obvious under the condition of heavy load; and the bearing seat and the speed reducer are integrated into one part, so that the control and detection precision is higher, the space can be effectively saved, and the personnel assembly difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy-load driving, in particular to a bridge-type direct-drive double differential wheel unit. Background Art

[0002] Currently, most dual differential wheel drives on the market use motor-driven chain transmission. The motors are installed on both sides, and the bearing seats are responsible for radial loads. This structure has a long axial dimension and a large volume. It is not easy to install in special occasions and is not suitable for use in occasions with high space and position requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the dual differential wheels currently on the market have a long axial dimension and a large volume, are not easy to install in special occasions, and are not suitable for use in occasions with high requirements on space and position.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a bridge-type direct-drive dual differential wheel unit, including a unit body, wherein the unit body includes a heavy-load reduction assembly, a drive assembly and a rubber-coated wheel assembly;

[0005] The heavy-load reduction assembly includes a wheel bracket axially fixed to the rubber-coated wheel assembly, a planet bracket connected to the wheel bracket, a planet gear supported on the planet bracket through a tapered roller bearing, a gear ring and a gear ring seat connected to the motor shaft of the drive assembly;

[0006] A central bearing seat is fixedly mounted on the side wall of the gear ring seat via a double differential wheel bridge type bracket.

[0007] A guide oil cylinder is installed inside the central bearing seat, and an axle slewing support bearing is installed on the upper end of the guide oil cylinder.

[0008] A rotary encoder and a distance sensor are installed on the outer side of the central bearing seat through a bracket.

[0009] A wheel hub for fixing the wheel edge bracket is arranged inside the rubber-coated wheel assembly.

[0010] A position detection system is fixedly mounted on one rotating end of the driving component.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model has a bridge-type direct-drive dual differential wheel unit with compact structure, simple wheel hub replacement, uniform load, and more accurate detection and measurement;

[0013] (2) The diversity and application of dual differential wheels are far greater than existing products, so they can be promoted and applied to occasions with relatively small spaces and special vehicle models, especially under heavy load conditions;

[0014] (3) Integrating the bearing seat and reducer into one component can improve the control and detection accuracy and effectively save space and reduce the difficulty of assembly;

[0015] (4) Use frameless motors and use the wheel-side wheat wheel bracket as the frame, which has greater torque and more solid structure for the same volume size;

[0016] (5) The rubber-coated wheel assembly uses a built-in hub, which makes installation and replacement more convenient and quicker than traditional methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a disassembly diagram of the utility model.

[0020] Figure 3 It is a disassembly diagram of the heavy-load speed reduction assembly in the utility model. DETAILED DESCRIPTION

[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Figure 1 and Figure 2 The unit shown includes a unit body, which includes a heavy-duty reduction assembly 1, a drive assembly 2 and a rubber-coated wheel assembly 3;

[0024] The heavy-load reduction assembly 1 includes a wheel bracket 4 axially fixed to the rubber-coated wheel assembly 3, a planet bracket 5 connected to the wheel bracket 4, a planet gear 6 supported on the planet bracket 5 through a tapered roller bearing, a ring gear 7 connected to the motor shaft of the drive assembly 2, and a ring gear seat 8;

[0025] A central bearing seat 10 is fixedly mounted on the side wall of the ring gear seat 8 via a dual differential wheel bridge bracket 9 .

[0026] A guide cylinder 11 is installed inside the middle bearing seat 10 , and an axle slewing support bearing 12 is installed on the upper end of the guide cylinder 11 .

[0027] A rotary encoder 13 and a distance sensor 14 are mounted on the outer side of the central bearing seat 10 via a bracket.

[0028] A wheel hub 15 for fixing the wheel rim bracket 4 is arranged inside the rubber-coated wheel assembly 3 .

[0029] A position detection system 16 is fixedly mounted on one rotating end of the driving assembly 2;

[0030] The dual differential wheel unit mainly outputs torque by connecting the drive component 2 with the heavy-load reduction component 1. The heavy-load reduction component 1 is connected to the wheel-wrapped rubber wheel component 3 by bolts to achieve motion output. The position detection system is connected to the rotor of the drive component 2 to achieve real-time speed and position detection. The drive component 2 and the heavy-load reduction component 1 are symmetrical on both sides. The functions such as vehicle body rotation and horizontal movement are achieved by controlling the forward and reverse rotation of the differential wheel speed. The rotation angle of the differential wheel is obtained by the rotary encoder.

[0031] like Figure 2 and Figure 3 As shown, the heavy-load reduction assembly 1 is connected to the motor shaft of the drive assembly 2 through a hollow spline and rotates with the motor shaft. The ring gear 7 and the ring gear seat 8 are connected with screws. The back of the ring gear seat 8 is fixed to the double differential wheel bridge bracket 9. The planetary gear 6 is supported on the planetary bracket 5 through a tapered roller bearing. The planetary bracket 5 is connected to the wheel side bracket 4 and then transmitted to the wheel rubber wheel assembly 3 through the wheel side bracket 4.

[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A bridge-type direct-drive dual differential wheel unit, comprising a unit body, characterized in that: The unit body comprises a heavy-load reduction assembly (1), a drive assembly (2) and a rubber-coated wheel assembly (3); The heavy-load reduction assembly (1) comprises a wheel bracket (4) axially fixed to the rubber-coated wheel assembly (3), a planet bracket (5) connected to the wheel bracket (4), a planet gear (6) supported on the planet bracket (5) via a tapered roller bearing, a ring gear (7) connected to the motor shaft of the drive assembly (2), and a ring gear seat (8); A central bearing seat (10) is fixedly mounted on the side wall of the gear ring seat (8) via a dual differential wheel bridge bracket (9).

2. The bridge-type direct-drive dual differential wheel unit according to claim 1, characterized in that: A guide oil cylinder (11) is installed inside the central bearing seat (10), and a shaft slewing support bearing (12) is installed on the upper end of the guide oil cylinder (11).

3. The bridge-type direct-drive dual differential wheel unit according to claim 1, characterized in that: A rotary encoder (13) and a distance sensor (14) are mounted on the outer side of the central bearing seat (10) via a bracket.

4. The bridge-type direct-drive dual differential wheel unit according to claim 1, characterized in that: A wheel hub (15) for fixing the wheel rim bracket (4) is arranged inside the rubber-coated wheel assembly (3).

5. The bridge-type direct-drive dual differential wheel unit according to claim 1, characterized in that: A position detection system (16) is fixedly mounted on one rotating end of the drive assembly (2).

Images