Steering device of straddle carrier

Abstract

The utility model relates to a straddle carrier steering device which comprises a straddle carrier wheel set, the straddle carrier wheel set is installed on a straddle carrier frame through a straddle carrier drive, the straddle carrier wheel set comprises a wheel seat and wheels installed on the wheel seat, the upper end of the wheel seat is fixedly connected with the outer ring of the straddle carrier drive, and the lower end of the wheel seat is fixedly connected with the straddle carrier drive. An outer ring driven by the straddle carrier rotates under the action of a driving assembly, an inner ring connected with a straddle carrier frame is rotationally arranged in the outer ring, an encoder driving shaft is arranged in the center of the wheel seat, and the encoder driving shaft penetrates through the inner ring to be connected with an encoder on the straddle carrier frame. Under the driving action of the straddle carrier, the straddle carrier wheel sets are driven to rotate by 360 degrees, so that large-angle rotation is achieved, the straddle carrier can be more suitable for places with small indoor space, meanwhile, the encoder limit setting provides more accurate angle feedback, and the straddle carrier can accurately steer according to a preset angle.

Description

Technical Field

[0001] The utility model belongs to the technical field of straddle carriers, and particularly relates to a steering device for a straddle carrier. Background Technique

[0002] With the development of the energy storage industry, the transfer of energy storage boxes by straddle carriers has become the industry mainstream. The straddle carrier was originally designed to meet the transportation of containers in the logistics industry and is mostly used in outdoor sites. The wheel set of the conventional straddle carrier is connected to the straddle carrier frame through a slewing bearing. The lug of the steering cylinder body is fixed on the main frame, and the rod end is connected to the wheel seat. A certain angle of steering is achieved through the telescoping of the oil cylinder. This steering method can meet outdoor use. The transfer of energy storage boxes mostly takes place in the factory building. The space in the factory building is limited, and the straddle carrier needs to turn at a large angle and move in multiple directions. Content of the Utility Model

[0003] (I) Purpose of the Utility Model

[0004] In order to overcome the above deficiencies, the purpose of the utility model is to provide a steering device for a straddle carrier to solve the above technical problems.

[0005] (II) Technical Solution

[0006] To achieve the above purpose, the technical solution provided by this application is as follows:

[0007] A steering device for a straddle carrier includes a straddle carrier wheel set. The straddle carrier wheel set is installed on the straddle carrier frame through a straddle carrier drive. The straddle carrier wheel set includes a wheel seat and wheels installed on the wheel seat. The upper end of the wheel seat is fixedly connected to the outer ring of the straddle carrier drive. The outer ring of the straddle carrier drive rotates under the action of a drive assembly. An inner ring connected to the straddle carrier frame is rotatably arranged inside the outer ring. An encoder drive shaft is arranged at the center of the wheel seat. The encoder drive shaft passes through the inner ring and is connected to an encoder on the straddle carrier frame.

[0008] Preferably, the wheel seat is L-shaped.

[0009] Preferably, an upper connecting boss is arranged at the upper end of the inner ring. The upper connecting boss is connected to an upper combined boss on the straddle carrier frame through bolts.

[0010] Preferably, a lower connecting boss is arranged at the lower end of the outer ring. The lower connecting boss is connected to a lower combined boss on the wheel seat through bolts.

[0011] Preferably, the straddle carrier drive includes a drive housing. An inner ring and an outer ring are rotatably arranged inside the drive housing. The outer ring is sleeved outside the inner ring. A gap is left between the inner ring and the outer ring. A gear is arranged on the outer ring. The gear meshes with a gear shaft of the drive assembly. The gear shaft is connected to a drive motor.

[0012] Preferably, the wheel is connected to the wheel hub, bearings and a sealing oil seal are installed on the wheel hub, and the bearings are installed on the wheel seat.

[0013] Preferably, the encoder transmits the angle-encoded signal to the control unit.

[0014] Beneficial effects:

[0015] The utility model can drive the straddle carrier wheel set to rotate 360° under the action of the straddle carrier drive, so as to realize large-angle rotation, and is more suitable for places with small indoor space. At the same time, the encoder setting provides more accurate angle feedback, enabling the straddle carrier to turn accurately according to the preset angle. Description of the drawings

[0016] Figure 1 is an exploded schematic view of the utility model;

[0017] Figure 2 is a sectional structure diagram according to an embodiment of the utility model;

[0018] Figure 3 is Figure 2 an enlarged view of part A of

[0019] Figure 4 is a schematic structural diagram of the upper connecting boss of the straddle carrier drive;

[0020] Figure 5 is an exploded structure diagram of the straddle carrier wheel set;

[0021] Figure 6 is an internal structure diagram of the straddle carrier drive. Detailed implementation manners

[0022] To make the purpose, technical solutions and advantages of the utility model clearer, the following combines specific implementation manners and refers to the attached Figures 1-6 , and further details the utility model. It should be understood that these descriptions are only exemplary and do not limit the scope of the utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concept of the utility model.

[0023] A straddle carrier steering device provided by the utility model includes a straddle carrier wheel set 3, and the straddle carrier wheel set 3 is installed on a straddle carrier frame 1 through a straddle carrier drive 2, and the straddle carrier is steered under the action of the straddle carrier drive 2.

[0024] The straddle carrier wheel set 3 includes a wheel seat 31 and wheels 36 mounted on the wheel seat 31. The wheel seat 31 is L-shaped, which can better provide support and play a stabilizing effect. The wheels 36 are connected to a hub 35. A bearing 34 and a seal oil seal 33 are mounted on the hub 35. The seal oil seal 33 has good sealing performance and chemical corrosion resistance, extending the service life of the straddle carrier wheel set. The bearing 34 is mounted on the wheel seat 31.

[0025] The upper end of the wheel seat 31 is fixedly connected to the outer ring 22 of the straddle carrier drive 2. A lower connecting boss is provided at the lower end of the outer ring 22. The lower connecting boss and the lower combined boss 32 on the wheel seat 31 are bolted together. The settings of the lower connecting boss and the lower combined boss 32 facilitate alignment and installation. The outer ring 22 of the straddle carrier drive rotates under the action of the drive assembly. An inner ring 21 connected to the straddle carrier frame 1 is rotatably provided inside the outer ring 22. An upper connecting boss 26 is provided at the upper end of the inner ring. The upper connecting boss 26 and the upper combined boss on the straddle carrier frame 1 are bolted together. The settings of the upper connecting boss and the upper combined boss facilitate the connection between the inner ring and the straddle carrier frame.

[0026] An encoder drive shaft 23 is provided at the center of the wheel seat 31. The encoder drive shaft 23 passes through the inner ring 21 and is connected to an encoder 25 on the straddle carrier frame 1 through a coupling 24. The encoder 24 transmits an angle-encoded signal to the control unit. The control unit controls the straddle carrier wheel set to rotate to a set angle, realizing multi-directional movement.

[0027] The straddle carrier drive 2 includes a drive housing 24. An inner ring 21 and an outer ring 22 are rotatably provided inside the drive housing 24. The outer ring 22 is sleeved outside the inner ring 21. A gap is left between the inner ring 21 and the outer ring 22. A gear 23 is provided on the outer ring 22. The gear 23 meshes with a gear shaft 25 of the drive assembly. The gear shaft 25 is connected to a drive motor. When it is necessary to adjust the straddle carrier wheel set, the drive motor drives the gear shaft to rotate. The gear shaft drives the meshing outer ring to rotate, thereby driving the straddle carrier wheel set to rotate.

[0028] The utility model can drive the straddle carrier wheel set to rotate 360° under the action of the straddle carrier drive, thereby realizing large-angle rotation, being more suitable for places with small indoor space. At the same time, the encoder setting provides more accurate angle feedback, enabling the straddle carrier to turn precisely according to the preset angle.

[0029] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A straddle carrier steering device, characterized in that: The invention comprises a straddle carrier wheel assembly, which is installed on a straddle carrier frame through a straddle carrier drive, and comprises a wheel seat and a wheel installed on the wheel seat, wherein the upper end of the wheel seat is fixedly connected to an outer ring of the straddle carrier drive, and the outer ring of the straddle carrier drive rotates under the action of a driving assembly, and an inner ring connected to the straddle carrier frame is provided inside the outer ring, and an encoder drive shaft is provided at the center of the wheel seat, and the encoder drive shaft passes through the inner ring and is connected to an encoder on the straddle carrier frame.

2. A straddle carrier steering device according to claim 1, characterized in that: The wheel seat is L-shaped.

3. The straddle carrier steering device according to claim 1, characterized in that: An upper connecting boss is provided at the upper end of the inner ring, and the upper connecting boss is connected to an upper combined boss on the straddle carrier frame by bolts.

4. The straddle carrier steering device according to claim 1, characterized in that: A lower connecting boss is provided at the lower end of the outer ring, and the lower connecting boss is connected to the lower combined boss on the wheel seat by bolts.

5. The straddle carrier steering device according to claim 1, characterized in that: The straddle carrier drive comprises a drive housing, wherein an inner ring and an outer ring are rotatably arranged in the drive housing, the outer ring is sleeved on the outer side of the inner ring, a gap is left between the inner ring and the outer ring, a gear is arranged on the outer ring, the gear is meshed with a gear shaft of a drive assembly, and the gear shaft is connected to a drive motor.

6. The straddle carrier steering device according to claim 1, characterized in that: The wheel is connected to a wheel hub, a bearing and an oil seal are installed on the wheel hub, and the bearing is installed on a wheel seat.

7. The straddle carrier steering device according to claim 1, characterized in that: The encoder transmits angle-coded signals to a control unit.

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