CN109534158B

CN109534158B - Balanced type horizontal wheel device and crane trolley

Info

Publication number: CN109534158B
Application number: CN201811583768.0A
Authority: CN
Inventors: 闫孟; 商伟军; 潘海鹰; 魏红梅; 杨军
Original assignee: Qingdao Haixi Heavy Duty Machinery Co Ltd
Current assignee: Qingdao Haixi Heavy Duty Machinery Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-04-10
Anticipated expiration: 2038-12-24
Also published as: CN109534158A

Abstract

The invention relates to the technical field of hoisting equipment, in particular to a balanced type horizontal wheel device and a crane trolley, which comprise two balancing stands symmetrically arranged at two sides of a track, a mounting bracket fixedly connected with an end beam of the crane trolley and a roller assembly; the middle part of each balancing stand is provided with a hinge shaft in the vertical direction, and the balancing stands can rotate for a set angle along the hinge shafts; the mounting bracket is rotatably connected with the balance frame through a hinge shaft; and each balance frame is rotatably provided with two roller assemblies which are symmetrical about a hinge shaft, and each roller assembly can revolve along the hinge shaft to realize that the two roller assemblies are respectively contacted with the side surface of the track. The invention can solve the problem that the horizontal wheel is easy to bear larger lateral force or impact load to cause the fracture of the horizontal wheel shaft.

Description

Balanced type horizontal wheel device and crane trolley

Technical Field

The invention belongs to the technical field of hoisting equipment, and particularly relates to a balanced type horizontal wheel device and a crane trolley.

Background

When the port yard bridge crane trolley runs, because the track gauge of the trolley is large, in order to prevent the trolley from gnawing the track during running, generally, the wheel on one side is not provided with a wheel rim, and the wheel on the other side is provided with a horizontal roller device to ensure that the trolley runs stably along the track, as shown in the attached figures 1-3 of the specification.

In the above arrangement, the horizontal roller 11 is used to bear the lateral force of the crane trolley, and when the crane trolley has a strong tendency to deviate from the rail 12, the horizontal roller 11 will bear a large lateral force and provide a deflection counter force to ensure the crane trolley to move along the rail. Therefore, the horizontal roller 11 is used as an important part in the running of the trolley, and the safety and the reliability are very important.

When the speed of the crane trolley is high or the straightness of the track 12 is poor, the horizontal roller 11 can bear high-strength impact load caused by large lateral force or uneven straight track, the conditions of horizontal wheel shaft breakage, horizontal wheel bearing damage or horizontal wheel abnormal sound and the like are easy to occur, and great potential safety hazard is brought to the safe operation of the crane trolley.

Meanwhile, a set gap is kept between the horizontal roller and the rail when the horizontal roller is used, and after the horizontal roller or the rail is abraded, the position of the horizontal roller needs to be quickly adjusted so that the gap meets the set requirement.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a balanced type horizontal wheel device and a crane trolley, which can solve the problem that a horizontal wheel shaft is broken due to the fact that a horizontal wheel is easy to bear large lateral force or impact load.

The invention adopts the following technical scheme: a balanced horizontal wheel device comprises two balancing frames symmetrically arranged on two sides of a track, a mounting bracket fixedly connected with an end beam of a crane trolley and a roller assembly.

The middle part of each balancing stand is provided with a hinge shaft in the vertical direction, and the balancing stands can rotate for a set angle along the hinge shafts; the mounting bracket is rotatably connected with the balance frame through a hinge shaft; and each balance frame is rotatably provided with two roller assemblies which are symmetrical about a hinge shaft, and each roller assembly can revolve along the hinge shaft to realize that the two roller assemblies are respectively contacted with the side surface of the track.

The middle part and the mounting bracket of every balancing stand rotate to be connected, and the gyro wheel assembly is installed at the both ends of balancing stand, and when the gyro wheel met the relatively poor track of straightness in the gyro wheel assembly, the balancing stand took place to rotate, avoided the gyro wheel to receive great impact load, just also avoided the fracture of pivot axle in hinge or the gyro wheel assembly.

Further, the roller assembly comprises a roller, the roller is rotatably connected with the balance frame through an eccentric shaft, a bearing is arranged between the roller and the eccentric shaft, the upper end of the eccentric shaft is fixedly connected with an eccentric adjusting cover, the eccentric adjusting cover is fixedly connected with the balance frame, and the eccentric adjusting cover can rotate along the axis of the eccentric adjusting cover to set an angle and is fixed.

The special eccentric shaft is used as a rotating shaft of the roller in the roller assembly, the eccentric shaft does not rotate when the crane trolley works, and the eccentric shaft can rotate for a certain angle by rotating the eccentric adjusting cover when the gap between the roller and the track needs to be adjusted.

Further, the gap between the roller and the track is 3-5 mm.

Further, the upper end of the balance frame is provided with a mounting hole, the eccentric shaft penetrates through the mounting hole and then is fixedly connected with the eccentric adjusting cover, the eccentric adjusting cover and the upper end face of the balance frame are respectively provided with bolt holes uniformly distributed along the axis of the mounting hole, and the eccentric adjusting cover is fixedly connected with the balance frame through bolts.

Through the mode that the bolt holes are uniformly distributed on the eccentric adjusting cover and the balancing stand, different bolt holes can be aligned by rotating the eccentric adjusting cover when the bolt is not installed, so that the distance between the rotating axis of the eccentric shaft and the track is changed, and the gap between the roller installed on the eccentric shaft and the track is changed.

Furthermore, the upper end of the mounting bracket is fixedly connected with the end beam, and the lower end of the mounting bracket is rotatably connected with the balance frame through a hinge shaft.

Further, a lubricating oil nozzle is arranged at the upper end of the eccentric shaft.

Further, a lubricating oil path is arranged in the eccentric shaft.

Through setting up special lubricating nipple and lubricated oil circuit, can be so that the contact surface between eccentric shaft, bearing and the gyro wheel obtains the lubrication, can improve gyro wheel pivoted stationarity.

A balance type horizontal wheel is not arranged at a wheel on one side of the crane trolley, and a balance type horizontal wheel device is arranged at a wheel on the other side of the crane trolley.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts the mode that the middle part of the balancing stand is hinged with the mounting frame, and the two ends of the balancing stand are respectively connected with the roller assemblies to form a 'balance beam' type structure, each balancing stand can rotate for a certain angle along the hinged shaft, when the rail in contact with the roller assemblies is uneven, the roller assemblies in contact with the rail are stressed and rotate the balancing stands, namely the position of the roller assemblies in contact with the rail is changed along with the rail, and the impact load on the horizontal wheel device caused by poor rail flatness can be reduced.

When the gap between the roller and the track needs to be adjusted, the eccentric shaft can rotate for a certain angle in a mode of detaching the bolt and rotating the eccentric adjusting cover, the eccentric shaft rotates to enable the position of the roller connected with the outer side face of the eccentric shaft through the bearing to be changed, and the gap between the roller and the track can be quantitatively changed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic top view of a prior art horizontal roller installation;

FIG. 2 is a block diagram of a prior art horizontal roller for use with a track;

FIG. 3 is a block diagram of another prior art horizontal roller for use with a track;

FIG. 4 is a front view of the overall structure of the present invention;

FIG. 5 is a schematic top view of the overall structure of the present invention;

FIG. 6 is a schematic view of the roller assembly of the present invention;

FIG. 7 is a schematic view of the gap between the roller assembly and the track according to the present invention.

In the figure: 1. mounting a bracket; 2. a hinge shaft; 3. a balancing stand; 4. a roller assembly; 5. a first transparent cover; 6. a roller; 7. a double-row tapered roller bearing; 8. a second shaft sleeve; 9. oil sealing; 10. a second transparent cover; 11. a horizontal roller; 12. a track; 13. an end beam; 14. an eccentric shaft; 15. a lubricating oil nozzle; 16. a first bushing; 17. an eccentric adjustment cover.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

The words used herein to indicate orientation, left, right, front, rear, and the like are based on the orientation or positional relationship shown in the drawings and are used only for the purpose of describing the invention and for the purpose of simplifying the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and should not be construed as limiting the invention. Also, the terms first, second, etc. are merely used to distinguish two structures having similar or identical structures, and do not represent the importance of the structures in the device.

Embodiment 1, as shown in fig. 1 to 7, a balanced horizontal wheel device includes two balance frames 3 symmetrically disposed on two sides of a track 12, a mounting bracket 1 fixedly connected to an end beam 13 of a crane trolley, and a roller assembly 4.

The middle part of each balance frame 3 is provided with a hinge shaft 2 in the vertical direction, and the balance frames 3 can rotate along the hinge shafts 2 for a set angle; the mounting bracket 1 is rotatably connected with the balance frame 3 through a hinge shaft 2; and each balance frame 3 is rotatably provided with two roller assemblies 4 which are symmetrical about the hinge shaft 2, and each roller assembly 4 can revolve along the hinge shaft 2 to realize that the two roller assemblies 4 are respectively contacted with the side surface of the track 12.

Preferably, the roller assembly 4 comprises a roller 6, the roller 6 is rotatably connected with the balance frame 3 through an eccentric shaft 14, a bearing is arranged between the roller 6 and the eccentric shaft 14, the bearing is a double-row tapered roller bearing 7, the upper end of the eccentric shaft 14 is fixedly connected with an eccentric adjusting cover 17, the eccentric adjusting cover 17 is fixedly connected with the balance frame 3, and the eccentric adjusting cover 17 can rotate along the axis of the eccentric adjusting cover 17 to set an angle and is fixed.

Specifically, a first shaft sleeve 16 is arranged at the upper part of the eccentric shaft 14, a second shaft sleeve 8 is arranged at the lower part of the eccentric shaft 14, the bearing is arranged between the first shaft sleeve 16 and the second shaft sleeve 8, the inner ring of the bearing is in contact with the eccentric shaft 14, and the outer ring of the bearing is in contact with the inner circular surface of the roller 6. The first transparent cover 5 is arranged outside the first shaft sleeve 16, the second transparent cover 10 is arranged outside the second shaft sleeve 8, and the first transparent cover 5 and the second transparent cover 10 are respectively and fixedly connected with the roller 6. An oil seal 9 is arranged between the second transparent cover 10 and the second shaft sleeve 8.

Specifically, the eccentric shaft 14 is eccentric by 5 mm.

Preferably, the gap between the roller 6 and the rail 12 is 3-5 mm.

Preferably, the upper end of the balance frame 3 is provided with a mounting hole, the eccentric shaft 14 penetrates through the mounting hole and then is fixedly connected with the eccentric adjusting cover 17, the eccentric adjusting cover 17 and the upper end face of the balance frame 3 are respectively provided with bolt holes uniformly distributed along the axis of the mounting hole, and the eccentric adjusting cover 17 is fixedly connected with the balance frame 3 through bolts.

Preferably, the upper end of the mounting bracket 1 is fixedly connected with the end beam 13, and the lower end is rotatably connected with the balance frame 3 through the hinge shaft 2.

Preferably, the upper end of the eccentric shaft 14 is provided with a lubricating oil nozzle 15.

Preferably, a lubricating oil path is provided in the eccentric shaft 14.

The working principle is as follows: when the device is used, when the roller 6 in the roller assembly 4 meets the track 12 with poor flatness, the balancing stand 3 rotates, so that the roller 6 is prevented from being subjected to large impact load, and the fracture of the rotating shaft (namely the eccentric shaft 14) in the hinge shaft 2 or the roller assembly 4 is also avoided.

When the roller 6 or the rail 12 is found to be worn after a period of use and the gap between the roller 6 and the rail 12 becomes larger, the bolt is removed from the bolt hole of the eccentric adjusting cover 17 and the balancing stand 3, the eccentric adjusting cover 17 is rotated to align different bolt holes, so that the distance between the rotation axis of the eccentric shaft 14 and the rail 12 is changed, and the gap between the roller 6 mounted on the eccentric shaft 14 and the rail 12 is changed.

Embodiment 2, a crane trolley, wheel department does not set up balanced type horizontal wheel on one side of crane trolley, and wheel department sets up balanced type horizontal wheel device on the other side.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. A balanced horizontal wheel device is characterized by comprising,

the two balance frames are symmetrically arranged on two sides of the track, a hinge shaft in the vertical direction is arranged in the middle of each balance frame, and the balance frames can rotate for a set angle along the hinge shafts;

the mounting bracket is fixedly connected with an end beam of the crane trolley and is rotatably connected with the balance frame through a hinge shaft;

each balance frame is rotatably provided with two roller assemblies which are symmetrical about a hinge shaft, and each roller assembly can revolve along the hinge shaft to realize that the two roller assemblies are respectively contacted with the side surface of the track;

the roller assembly comprises a roller, the roller is rotatably connected with the balance frame through an eccentric shaft, a bearing is arranged between the roller and the eccentric shaft, the upper end of the eccentric shaft is fixedly connected with an eccentric adjusting cover, the eccentric adjusting cover is fixedly connected with the balance frame, and the eccentric adjusting cover can rotate along the axis of the eccentric adjusting cover to set an angle and is fixed.

2. The balanced horizontal wheel apparatus as claimed in claim 1, wherein the gap between the roller and the track is 3-5 mm.

3. The balanced horizontal wheel device as claimed in claim 1, wherein the upper end of the balance frame is provided with a mounting hole, the eccentric shaft passes through the mounting hole and is fixedly connected with the eccentric adjusting cover, the eccentric adjusting cover and the upper end surface of the balance frame are respectively provided with bolt holes along the axis of the mounting hole, and the eccentric adjusting cover is fixedly connected with the balance frame through bolts.

4. The balanced horizontal wheel apparatus as claimed in claim 1, wherein the mounting bracket has an upper end fixedly connected to the end beam and a lower end rotatably connected to the balance frame via a hinge shaft.

5. The balanced horizontal wheel apparatus as claimed in claim 1, wherein the eccentric shaft is provided at an upper end thereof with a grease nipple.

6. The balanced horizontal wheel apparatus as claimed in claim 5 wherein the eccentric shaft is provided with a lubricating oil passage therein.

7. A crane trolley, which utilizes the balanced type horizontal wheel device as claimed in any one of claims 1 to 6, and is characterized in that the wheel on one side of the crane trolley is not provided with the balanced type horizontal wheel device, and the wheel on the other side of the crane trolley is provided with the balanced type horizontal wheel device.