CN205061394U - Wheel assembly - Google Patents

Abstract

The utility model provides a wheel assembly, which includes a wheel, a bearing, an end cover and a wheel seat. Two mounting holes are arranged symmetrically on both sides of the wheel axis, which are matched with the outer ring of the bearing. The wheel seat is installed on the outer side of the wheel. The wheel seat Mounting holes 2 are symmetrically arranged on both sides of the wheel axial direction. End caps are installed in the two mounting holes 2. The front end of the end cap is provided with a shaft diameter, which is arranged in the first mounting hole. Bearings are installed between them, the inner end surface of mounting hole one and the outer end surface of the shaft diameter are in contact with the outer ring and inner ring of the bearing respectively, and the wheel seat is connected with the vehicle frame. The wheel assembly enables the load to be directly transmitted to the wheel without passing through the wheel shaft, and is durable, with good overall rigidity, simple structure, and convenient installation. It can be used for both driving wheels and driven wheels, and has a wide range of applications.

Description

a wheel assembly

technical field

The utility model belongs to the technical field of mechanical equipment, relates to a conveying machine, in particular to a wheel assembly.

Background technique

In the field of mechanical equipment, conveying machinery is widely used, and its wheel assembly is also diverse, but in the transmission of load, it needs to be transmitted to the wheel through the wheel shaft, such as Chinese patents CN201410727751.3, CN201110298942.9, CN201420723631.1 and In the driving wheel assembly in CN200620169100.8, the load is transmitted to the wheel through the wheel shaft, and the wheel shaft bears both bending moment and torque, and as in the driven wheel assembly in Chinese patent CN201110299094.3, the load is also transmitted to the wheel through the wheel shaft. Wheels, wheel bearings are subject to bending moments. In this type of wheel assembly, if the design of the wheel axle is unreasonable, it will bend under the long-term action of the bending moment, and even break under the limit state, causing equipment failure of the conveying machinery and affecting normal production.

Chinese patent CN201020507655.5 discloses a crane active wheel set with no bending moment on the wheel axle, including wheels, keys, spindles, three-in-one geared motors, bearings, bearing housings, bearing housing side plates, positioning pin sleeves, The oil deflector ring, oil cup, end cover and connecting bolts are characterized in that: two oil deflector rings and two bearings are directly and symmetrically assembled on the two journals of the spoke boss of the wheel, and the bearing seat and the side plate of the bearing seat are The direction of the bearing hole is respectively installed on the bearing from both sides, and four connecting bolts are used to connect the bearing seat and the side plate of the bearing seat. In this utility model, the load of the wheel set is transmitted to the bearing seat and the side plate of the bearing seat through the frame, and then directly transmitted to the wheel through the bearing, so that the wheel shaft only bears the torque and does not bear the bending moment, which greatly improves the work of the wheel shaft However, in this open patent, the bearing seat and the side plate of the bearing seat need to be fixed by connecting bolts, and in order to ensure the coaxiality of the bearing installation, it is also necessary to add positioning pins between the bearing seat and the side plate of the bearing seat The assembly is more complicated, the overall rigidity is poor, and when installing the side plate of the bearing housing, it must be ensured that the bearing and the four positioning pin sleeves that transition with it can be plugged in at the same time. This is in terms of processing accuracy and assembly accuracy. All requirements are very high; and the wheel assembly in this patent is the driving wheel that needs to be equipped with a geared motor, which has certain limitations in application.

Therefore, it is necessary to design a more durable wheel assembly, so that the load can be directly transmitted to the wheel without passing through the wheel axle, and the overall rigidity is good and easy to install, so as to overcome the above problems.

Utility model content

The purpose of the utility model is to overcome the problems that the wheel shaft is easily broken by the bending moment, the wheel assembly structure is complex, the overall rigidity is poor and the application is limited in the existing wheel assembly.

For this reason, the utility model provides a wheel assembly, including a wheel, a bearing, an end cap and a wheel seat, and two mounting holes are arranged symmetrically on both sides of the axial direction of the wheel, which are matched with the outer ring of the bearing. The wheel seat is installed on the outside, and the wheel seat is symmetrically provided with mounting holes 2 on both sides of the wheel axial direction. End covers are installed in the two mounting holes 2, and the front end of the end cover is provided with a shaft diameter. In hole 1, a bearing is installed between the mounting hole 1 and the shaft diameter, the inner end face of the mounting hole 1 and the outer end face of the shaft diameter are respectively in contact with the outer ring and the inner ring of the bearing, and the wheel seat and the vehicle frame connect.

Further, a wheel shaft hole is opened on the wheel axis, the wheel shaft passes through the wheel shaft hole, and the wheel shaft is assembled to serve as a driving wheel.

Further, an interference connection, a tension connection, a key connection or a spline connection is adopted between the wheel shaft and the wheel shaft hole for torque transmission.

Further, the bearing is a deep groove ball bearing or a tapered roller bearing, which can withstand axial force, and its inner and outer rings will not move relative to each other after being fixed.

Further, the wheel seat and the end cover are fixedly connected by screws.

Further, a gasket is provided between the wheel seat and the mounting surface of the end cover to ensure the axial clearance of the bearing.

Further, the wheel seat is an integral C-shaped structure, and the mounting holes 2 on it can be processed and formed at one time.

Further, the vehicle frame is connected to the top surface or two side surfaces of the wheel seat.

The wheel provided by the utility model can be used as a driving wheel when it is assembled with a wheel shaft connected with a belt drive, and can be directly used as a driven wheel when it is not connected with a wheel shaft.

Compared with the prior art, the utility model has the beneficial effects:

(1) The load carried by the wheel assembly provided by the utility model is transmitted to the wheel successively by the vehicle frame through the wheel seat, the end cover and the bearing without passing through the wheel axle, so the wheel assembly is more durable.

(2) The wheel seat assembled by the wheel provided by the utility model is an integral structure, and the overall rigidity is good; at the same time, the mounting hole 2 on the wheel seat of the assembly end cover is easy to process and can ensure good coaxiality, which is beneficial to the bearing Easy assembly and easy installation.

(3) The wheel assembly provided by the utility model can be used for both driving wheels and driven wheels, and has a wide range of applications.

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of the wheel assembly of the present invention.

Description of reference signs: 1. track; 2. wheel; 3. bearing; 4. end cover; 5. wheel seat; 6. vehicle frame; 7. wheel axle; 2-1. inner end face; 1; 2-3, wheel shaft hole; 4-1, shaft diameter; 4-2, outer end face; 5-1, mounting hole 2; 5-2, side face; 5-3, top face.

detailed description

Example 1:

In order to overcome the problems of the existing wheel assembly that the wheel shaft is easily broken by the bending moment, the wheel assembly structure is complex, and the overall rigidity is poor, this embodiment provides a wheel assembly as shown in Figure 1, including the wheel 2, the bearing 3, the end Cover 4 and wheel seat 5, two installation holes 2-2 are arranged symmetrically on both sides of the wheel 2 axially, and wheel seat 5 is installed on the outside of the wheel 2, and the wheel seat 5 is symmetrical on both sides of the wheel 2 axial direction There are mounting holes 2 5-1, and end caps 4 are installed in the two mounting holes 5-1. The front end of the end cap 4 is provided with a shaft diameter 4-1, and the shaft diameter 4-1 is arranged in the mounting hole 1. 2-2, the bearing 3 is installed between the installation hole 2-2 and the shaft diameter 4-1, the inner end surface 2-1 of the installation hole 2-2 and the outer end surface 4-1 of the shaft diameter 4-1 2 are in contact with the outer ring and the inner ring of the bearing 3 respectively, and the wheel base 5 is connected with the vehicle frame 6 .

The bottom of the wheel 2 is placed on the track 1, and there are two mounting holes 2-2 on both axial sides of the wheel 2, which are matched with the outer ring of the bearing 3, and the inner end surface 2-1 of the mounting hole 2-2 is used for axial positioning The outer ring of the bearing 3 and the wheel seat 5 have two installation holes 5-1 on both sides of the wheel 2 axial direction to assemble two end caps 4, and the end caps 4 need to be fixed on the wheel seat 5. A shaft diameter 4-1 is processed on each end cover 4, and the shaft diameter 4-1 is matched with the inner ring of the bearing 3, and the inner ring of the bearing 3 is positioned with the outer end surface 4-2 of the shaft diameter 4-1. Circle, the vehicle frame 6 is connected on the wheel seat 5, to fix the wheel assembly. The load carried by the wheel assembly is transmitted to the wheel 2 in turn by the vehicle frame 6 through the wheel seat 5, the end cover 4 and the bearing 3, and the wheel assembly can be directly used for driven wheels.

Example 2:

This embodiment provides a wheel assembly, including a wheel 2, a bearing 3, an end cover 4, a wheel seat 5 and a wheel shaft 7, and the wheel 2 is symmetrically provided with two mounting holes 2-2 on both sides of the axial direction, so that The wheel seat 5 is installed on the outside of the wheel 2, and the wheel seat 5 is symmetrically provided with mounting holes 2 5-1 on both axial sides of the wheel 2, and end caps 4 are installed in the two mounting holes 5-1. The front end of the cover 4 is provided with a shaft diameter 4-1, and the shaft diameter 4-1 is arranged in the installation hole 2-2, and the bearing 3 is installed between the installation hole 2-2 and the shaft diameter 4-1, and the installation The inner end surface 2-1 of the hole 2-2 and the outer end surface 4-2 of the shaft diameter 4-1 are respectively in contact with the outer ring and the inner ring of the bearing 3, and a wheel shaft hole 2-3 is opened on the axis of the wheel 2 , the wheel shaft 7 traverses the wheel shaft hole 2-3, the wheel shaft 7 and the wheel shaft hole 2-3 adopt interference connection, expansion connection, key connection or spline connection, and the wheel seat 5 It is connected with the vehicle frame 6, and the vehicle frame 6 is connected with the top surface 5-3 or the two side surfaces 5-2 of the wheel seat 5. This wheel assembly can be used as a driving wheel, and at the same time, the loaded load of this wheel assembly is transmitted to the wheel 2 successively by the vehicle frame 6 through the wheel seat 5, the end cover 4 and the bearing 3, without passing through the wheel axle 7, which avoids The wheel bearing is deflected by the bending moment, or even broken, which affects normal production and prolongs the service life of the wheel assembly.

In the above embodiments, the bearing 3 is a deep groove ball bearing or a tapered roller bearing, which can withstand axial force and whose inner and outer rings will not move relative to each other after being fixed.

In addition, the wheel seat 5 and the end cover 4 are fixedly connected by screws; a gasket is provided between the mounting surface of the wheel seat 5 and the end cover 4 to ensure the axial clearance of the bearing 3 .

The wheel seat 5 is an integral C-shaped structure to ensure its good overall rigidity, and the two mounting holes 5-1 on which the end cover 4 is installed can be processed and formed at one time, and can ensure good coaxiality. Facilitate the assembly of the bearing 3.

To sum up, the wheel assembly provided by the utility model enables the load to be directly transmitted to the wheel without passing through the wheel shaft, which is durable, has good overall rigidity, and is easy to install. It can be used for both driving wheels and driven wheels. Wide range of applications.

The above examples are only illustrations of the utility model, and do not constitute a limitation to the protection scope of the utility model. All designs identical or similar to the utility model all belong to the protection scope of the utility model.

Claims (8)

1. a wheel assembling, comprise wheel (2), bearing (3), end cap (4) and wheel mount (5), it is characterized in that: described wheel (2) axial bilateral symmetry is provided with two mounting holes one (2-2), described wheel (2) outside installation car wheel seat (5), described wheel mount (5) is provided with mounting hole two (5-1) in wheel (2) axial bilateral symmetry, in these two mounting holes two (5-1), end cap (4) is all installed, described end cap (4) front end is provided with the diameter of axle (4-1), this diameter of axle (4-1) is arranged in mounting hole one (2-2), between described mounting hole one (2-2) and the diameter of axle (4-1), bearing (3) is installed, the inner end surface (2-1) of described mounting hole one (2-2) and the outer face (4-2) of the diameter of axle (4-1) contact with the outer ring of bearing (3) and inner ring respectively, described wheel mount (5) is connected with vehicle frame (6).

2. wheel assembling as claimed in claim 1, it is characterized in that: described wheel (2) axis offers wheel axis hole (2-3), axletree (7) passes across this wheel axis hole (2-3).

3. wheel assembling as claimed in claim 2, is characterized in that: adopt interference to be connected between described axletree (7) with wheel axis hole (2-3), swelling connection, key connect or spline joint.

4. wheel assembling as claimed in claim 1, is characterized in that: described bearing (3) is deep groove ball bearing or tapered roller bearing.

5. wheel assembling as claimed in claim 1, be is characterized in that: be fixedly connected with by screw between described wheel mount (5) with end cap (4).

6. wheel assembling as claimed in claim 5, is characterized in that: be provided with pad between the attachment face of described wheel mount (5) and end cap (4).

7. the wheel assembling as described in claim 1 or 5 or 6, is characterized in that: described wheel mount (5) is overall C type structure.

8. wheel assembling as claimed in claim 1, is characterized in that: end face (5-3) or two sides (5-2) of described vehicle frame (6) and wheel mount (5) are connected.