CN115818447A

CN115818447A - Crane travel monitoring device

Info

Publication number: CN115818447A
Application number: CN202310061595.0A
Authority: CN
Inventors: 崔鹏; 侯永强; 吴海召; 胡成国; 陈长钊; 郭珍吉; 陈彭飞; 乔军凯; 谢军强; 陈航; 白瑞刚; 张玉茂; 闫纪军
Original assignee: Henan Weihua Heavy Machinery Co Ltd
Current assignee: Henan Weihua Heavy Machinery Co Ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-03-21

Abstract

The utility model provides a hoist stroke monitoring devices, includes hoist end beam, fixed bolster on the hoist end beam, the below of support is equipped with the axle sleeve, and support and axle sleeve are equipped with the pivot in the horizontal direction synchronous motion in the axle sleeve, and the pivot passes through the bearing to be connected in the axle sleeve, and the fixed follower of an end of pivot, the measurement terminal of another end fixing encoder of pivot, encoder are fixed on the axle sleeve, the fixed surface friction ring of follower. Compared with the prior art, the invention has the technical effects that the invention is provided with the driven wheel, when the wheel slips, the driven wheel is also static, the data monitored by the encoder is also accurate, and the invention can bring convenience for monitoring the stroke.

Description

Crane travel monitoring device

Technical Field

The invention relates to a crane travel monitoring device.

Background

At present, for a large crane with more than 200 tons, the national regulation needs to additionally arrange safety monitoring equipment, including stroke monitoring.

In order to adapt to complex working condition environments, an electronic stroke (or position) sensor is generally not selected for stroke monitoring, but a mechanical type is adopted, an encoder can be installed on a wheel above a track, and the encoder can measure the rotating distance of the wheel for monitoring, for example, the technology is disclosed in patent application publication No. CN113582014A and patent publication No. 2021.11.02.

However, the wheels are all power wheels and sometimes slip, and in a slipping state, the crane is still static, the wheels still rotate, data monitored by the encoder is distorted, and therefore, the travel is inconvenient to monitor.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: how to design a mechanical crane travel monitoring device, when the wheel skids, the data monitored by the encoder is also accurate.

The technical scheme of the invention is as follows:

the utility model provides a hoist stroke monitoring devices, includes hoist end beam, fixed bolster on the hoist end beam, the below of support is equipped with the axle sleeve, and support and axle sleeve are equipped with the pivot in the horizontal direction synchronous motion in the axle sleeve, and the pivot passes through the bearing to be connected in the axle sleeve, and the fixed follower of an end of pivot, the measurement terminal of another end fixing encoder of pivot, encoder are fixed on the axle sleeve, the fixed surface friction ring of follower.

Two vertical rods are fixed below the support, two blind holes are formed above the shaft sleeve, the lower end portions of the vertical rods are inserted into the corresponding blind holes, and a pressure spring is arranged between the support and the shaft sleeve.

The friction ring is a rubber tire.

Compared with the prior art, the invention has the technical effects that the invention is provided with the driven wheel, when the wheel slips, the driven wheel is also static, the data monitored by the encoder is also accurate, and the invention can bring convenience for monitoring the stroke.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a left side schematic view of an encoder.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

Referring to fig. 1-2, a crane stroke monitoring device comprises a crane end beam 2, a fixed support 3 is arranged on the crane end beam 2, a shaft sleeve 5 is arranged below the support 3, and the support 3 and the shaft sleeve 5 move synchronously in the horizontal direction.

A rotating shaft 51 is arranged in a shaft sleeve 5, the rotating shaft 51 is connected in the shaft sleeve 5 through a bearing 52, one end of the rotating shaft 51 is fixed with the driven wheel 4, the other end of the rotating shaft 51 is fixed with a measuring terminal 71 of an encoder 7, the encoder 7 is fixed on the shaft sleeve 5, and a friction ring 41 is fixed on the surface of the driven wheel 4.

As shown in fig. 1, in order to make the driven wheel 4 float up and down when the road surface is uneven, two vertical rods 61 are fixed below the bracket 3, two blind holes 53 are arranged above the shaft sleeve 5, the lower end parts of the vertical rods 61 are inserted into the corresponding blind holes 53, and a pressure spring 6 is arranged between the bracket 3 and the shaft sleeve 5. Thus, the driven wheel 4 can float up and down through the lower end of the vertical rod 61 inserted into the blind hole 53 at different depths.

The friction ring 41 is a rubber tire.

The working principle is as follows:

installation:

firstly, the shaft sleeve 5, the rotating shaft 51, the bearing 52 and the encoder 7 are assembled together, the compression spring 6 is pressed by force to be contracted, the lower end part of the vertical rod 61 is inserted into the corresponding blind hole 53, finally, the compression spring 6 is loosened, and the friction ring 41 is contacted with the ground 100 through the restoring force of the compression spring 6.

Monitoring:

when the wheels normally run, the crane moves, the driven wheel is similar to the rear wheel of the front driving vehicle, because the static friction force also rotates, and the data monitored by the encoder is normally monitored as the data monitored by the prior art; when the wheel skids, the crane is static, the driven wheel is also static, and the data measured by the encoder is also zero and very accurate, so that the stroke monitoring is more accurate.

See the prior art for additional details.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a hoist stroke monitoring devices, includes hoist end beam (2), its characterized in that: fixed bolster (3) are gone up to hoist end beam (2), the below of support (3) is equipped with axle sleeve (5), support (3) and axle sleeve (5) are at horizontal direction synchronous motion, be equipped with pivot (51) in axle sleeve (5), pivot (51) are connected in axle sleeve (5) through bearing (52), an end fixing follower (4) of pivot (51), measuring terminal (71) of another end fixing encoder (7) of pivot (51), encoder (7) are fixed on axle sleeve (5), fixed surface friction ring (41) of follower (4).

2. The crane travel monitoring device of claim 1, wherein: two vertical rods (61) are fixed below the support (3), two blind holes (53) are formed above the shaft sleeve (5), the lower end portions of the vertical rods (61) are inserted into the corresponding blind holes (53), and a pressure spring (6) is arranged between the support (3) and the shaft sleeve (5).

3. The crane travel monitoring device of claim 2, wherein: the friction ring (41) is a rubber tire.