Walking wheel structure

Abstract

The utility model discloses a walking wheel structure which comprises a wheel, a driving shaft, a connecting assembly and a bearing assembly. The wheels are integrally provided with supporting shafts, and the supporting shafts are provided with connecting holes. One end of the driving shaft is a connecting end, and the other end is a driving end; the connecting end is inserted into one end of the connecting hole and provided with a first flat key, and a key groove is formed in the connecting hole. The connecting assembly is arranged at one end of the connecting hole and is in threaded connection with the driving shaft; bearing assemblies are arranged at the two ends of the supporting shaft. The traveling wheel structure is convenient to install and replace, the driving shaft does not need to bear supporting force, the size of the driving shaft is reduced, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of wheels, in particular to a traveling wheel structure. Background Art

[0002] The crane is equipped with a travel drive structure, and the wheels and drive shaft of the travel drive structure need to be assembled through a heat-installation process. The production cost is high, it is not easy to make, and it is also troublesome to replace. In addition, the drive shaft is also used as the bearing support shaft of the wheel, and it bears great pressure. The drive shaft needs a larger outer diameter to bear the supporting force. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a walking wheel structure that is easy to install and replace, the drive shaft does not need to bear supporting force, the size of the drive shaft is reduced, and the manufacturing cost is low.

[0004] The utility model provides a walking wheel structure, comprising a wheel, a driving shaft, a connecting assembly and a bearing assembly;

[0005] The wheel is integrally provided with a support shaft, and the support shaft is provided with a connecting hole along its axial direction;

[0006] One end of the driving shaft is a connecting end, and the other end is a driving end; the connecting end is inserted into one end of the connecting hole with clearance fit, a first flat key is fixedly provided on the side wall of the connecting end, and a keyway is provided at one end in the connecting hole corresponding to the first flat key;

[0007] The connecting assembly is arranged at one end of the connecting hole away from the driving shaft and is threadedly connected to the driving shaft to prevent the driving shaft from being separated from the connecting hole;

[0008] The bearing assemblies are disposed at both ends of the support shaft.

[0009] Furthermore, a second flat key is fixedly provided on the side wall of the driving end, and a limiting ring is integrally provided on the driving shaft between the first flat key and the second flat key.

[0010] Furthermore, the connecting assembly includes a bolt and a support plate, a supporting groove is provided at one end of the connecting hole away from the connecting end, the supporting plate is embedded in the supporting groove, a through hole is provided on the supporting plate, the bolt passes through the through hole and is threadedly connected to the connecting end.

[0011] Furthermore, the bearing assembly includes a bearing seat arranged on the outer periphery of the end of the support shaft, and a bearing is arranged between the bearing seat and the support shaft.

[0012] Furthermore, a through cover or a blind cover is provided inside the bearing seat on the outer side of the bearing.

[0013] Furthermore, a circle of track grooves is provided on the wheel surface of the wheel.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The walking wheel structure of the utility model is provided with a wheel, a driving shaft, a connecting assembly and a bearing assembly; the wheel is provided with a supporting shaft, the supporting shaft is connected to the driven structure through the bearing assembly, and the supporting shaft bears the supporting force. The driving shaft is installed in the connecting hole of the supporting shaft through the first flat key and the connecting assembly, does not need to bear the supporting force, is only used for driving transmission, does not need to adopt the hot-installation process, is easy to install and replace, the driving shaft does not need to bear the supporting force, reduces the size of the driving shaft, and has low manufacturing cost.

[0016] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 It is a structural schematic diagram of the traveling wheel structure;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the traveling wheel structure;

[0020] Figure 3 It is a schematic diagram of the exploded structure of the wheel, drive shaft and connecting components;

[0021] Figure 4 It is a structural schematic diagram of the traveling wheel structure;

[0022] Numbers in the figure: 1, wheel; 2, drive shaft; 3, connection assembly; 4, bearing assembly; 5, beam body;

[0023] 11. Support shaft; 12. Connecting hole; 13. Keyway; 14. Support groove; 15. Track groove;

[0024] 21. Connecting end; 22. Driving end; 23. First flat key; 24. Second flat key; 25. Limiting ring;

[0025] 31. Bolt; 32. Support plate;

[0026] 41. Bearing seat; 42. Bearing; 43. Through cover; 44. Blind cover. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Please refer to Figure 1 to Figure 4 , an embodiment of the utility model provides a walking wheel structure, including a wheel 1, a driving shaft 2, a connecting assembly 3 and a bearing assembly 4;

[0030] The wheel 1 is integrally provided with a support shaft 11, and the support shaft 11 is provided with a connecting hole 12 along its axial direction;

[0031] One end of the driving shaft 2 is a connecting end 21, and the other end is a driving end 22; the connecting end 21 is inserted into one end of the connecting hole 13 with clearance fit, a first flat key 23 is fixedly provided on the side wall of the connecting end 21, and a keyway 13 is provided at one end in the connecting hole 13 corresponding to the first flat key 23;

[0032] The connecting component 3 is arranged at one end of the connecting hole 12 away from the driving shaft 2 and is threadedly connected to the driving shaft 2 to prevent the driving shaft 2 from being separated from the connecting hole 12;

[0033] Bearing assemblies 4 are provided at both ends of the support shaft 11 .

[0034] In this embodiment, the wheel 1 is provided with a supporting shaft 11, and the supporting shaft 11 is connected to the driven structure through the bearing assembly 4, and the supporting shaft 11 bears the supporting force.

[0035] The drive shaft 2 is installed in the connection hole 12 of the support shaft 11 through the first flat key 23 and the connection component 3. It does not need to bear the supporting force and is only used for driving transmission. It does not need to adopt the hot-installation process. It is easy to install and replace. The drive shaft 2 does not need to bear the supporting force, which reduces the size of the drive shaft 2 and reduces the manufacturing cost. The drive shaft 2 can be pulled out of the connection hole 12 by removing the connection component 3, and the replacement is very convenient.

[0036] In some embodiments, Figure 4 The traveling wheel structure is installed at one end of the bottom of the crane beam 5 as a driving wheel; the driving shaft 2 and the connecting assembly 3 of the traveling wheel structure are removed and installed at the other end of the bottom of the beam 5 as a driven wheel.

[0037] In a preferred embodiment, if Figure 2 and Figure 3 As shown, a second flat key 24 is fixedly provided on the side wall of the driving end 22, and the driving end 22 is connected to the driving motor through the second flat key 24, so that the transmission effect is good; a limiting ring 25 is integrally provided on the driving shaft 2 between the first flat key 23 and the second flat key 24 to ensure the accurate installation of the driving shaft 2.

[0038] In a preferred embodiment, if Figure 2 and Figure 3 As shown, the connecting assembly 3 includes a bolt 31 and a support plate 32. A support groove 14 is provided at the end of the connecting hole 12 away from the connecting end 21. The support plate 32 is embedded in the support groove 14. A through hole is provided on the support plate 32. The bolt 31 passes through the through hole and is threadedly connected to the connecting end 21. The installation is convenient and the connection is stable.

[0039] In a preferred embodiment, if Figure 1 and Figure 2 As shown, the bearing assembly 4 includes a bearing seat 41 disposed on the outer periphery of the end of the support shaft 11, and a bearing 42 is disposed between the bearing seat 41 and the support shaft 11. The support shaft 11 is rotatably connected to the bearing seat 41 through the bearing 42, and the bearing seat 41 is installed on the driven equipment, such as the trolley, car and support legs of the main frame of the crane, and bears the supporting force through the support shaft 11.

[0040] In a preferred embodiment, if Figure 1 and Figure 2 As shown, a through cover 43 or a blind cover 44 is provided on the outer side of the bearing 42 in the bearing seat 41. When the traveling wheel structure is used as the driving wheel, the through cover 43 is used on the side where the driving shaft 2 is installed, so that the driving shaft 2 can pass through and protect the bearing 42; the blind cover 44 is used on the other side. When the traveling wheel structure is used as the driven wheel, the blind covers 44 are used on both sides.

[0041] In a preferred embodiment, if Figure 1 and Figure 2 As shown, a circle of track grooves 15 are provided on the wheel surface of the wheel 1, which improves stability when matched with the track.

[0042] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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 this application can be understood according to specific circumstances.

[0043] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A walking wheel structure, characterized in that: It comprises a wheel (1), a drive shaft (2), a connecting assembly (3) and a bearing assembly (4); The wheel (1) is integrally provided with a support shaft (11), and the support shaft (11) is provided with a connecting hole (12) along its axial direction; One end of the driving shaft (2) is a connecting end (21), and the other end is a driving end (22); the connecting end (21) is inserted into one end of the connecting hole (12) with clearance fit, a first flat key (23) is fixedly provided on the side wall of the connecting end (21), and a keyway (13) is provided at one end in the connecting hole (12) corresponding to the first flat key (23); The connecting assembly (3) is arranged at one end of the connecting hole (12) away from the driving shaft (2), and is threadedly connected to the driving shaft (2) to prevent the driving shaft (2) from being separated from the connecting hole (12); The bearing assemblies (4) are provided at both ends of the support shaft (11).

2. The traveling wheel structure according to claim 1, characterized in that: A second flat key (24) is fixedly provided on the side wall of the driving end (22), and a limiting ring (25) is integrally provided on the driving shaft (2) between the first flat key (23) and the second flat key (24).

3. The traveling wheel structure according to claim 1, characterized in that: The connection assembly (3) comprises a bolt (31) and a support plate (32); a support groove (14) is provided at one end of the connection hole (12) away from the connection end (21); the support plate (32) is embedded in the support groove (14); a through hole is provided on the support plate (32); the bolt (31) passes through the through hole and is threadedly connected to the connection end (21).

4. The traveling wheel structure according to claim 1, characterized in that: The bearing assembly (4) comprises a bearing seat (41) arranged on the outer periphery of the end of the support shaft (11), and a bearing (42) is arranged between the bearing seat (41) and the support shaft (11).

5. The traveling wheel structure according to claim 4, characterized in that: A through cover (43) or a blind cover (44) is provided inside the bearing seat (41) and outside the bearing (42).

6. The traveling wheel structure according to claim 1, characterized in that: The wheel (1) has a circle of track grooves (15) formed on the wheel surface.

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