Lifting type cantilever crane guide wheel device

By designing the lifting cantilever lifting guide wheel device, using technical means such as rollers and nylon rings, the problem that the cantilever lifting structure cannot adapt to different scenarios and working conditions is solved, and a more stable, smooth and durable lifting effect is achieved.

CN222454378UActive Publication Date: 2025-02-11NANTONG LIFUTONG HOISTING MASCH CO LTD
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Patent Information

Application Number
CN202421247783.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-03
Publication Date
2025-02-11
Estimated Expiration
2034-06-03

AI Technical Summary

Technical Problem

The lifting structure of conventional cantilever cranes cannot adapt to different usage scenarios and working conditions due to the fixed cantilever height. The accuracy of existing lifting cantilever cranes depends on pipe differences, which has high processing costs and high friction losses, which affects the user experience.

Method used

Design a lifting cantilever lifting guide wheel device, adopting a column structure composed of large pipes and small pipes. The small pipe moves up and down in the large pipe. The guide wheel device is installed in the large pipe and is rigidly connected to the small pipe. The roller design reduces friction, nylon ring and reinforcement method Lan combines to ensure stability.

Benefits of technology

It improves the stability and smoothness of the lifting cantilever crane, reduces friction losses, extends service life and improves user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a lifting type cantilever crane guide wheel device, a stand column of a lifting type cantilever crane is composed of a large pipe and a small pipe, the small pipe is installed in the large pipe and is in clearance fit with the large pipe, the small pipe moves up and down in the large pipe, and the upper end of the small pipe stretches out and draws back; the guide wheel device is installed in the large pipe, located below the small pipe, rigidly connected with the small pipe and moves up and down along with the small pipe, and a nylon ring is installed at an upper end opening of the large pipe, arranged on the small pipe in a sleeving mode and makes contact with the small pipe; the guide wheel device comprises a plurality of idler wheels, the idler wheels form a circle and abut against the inner wall of the large pipe, and when the guide wheel device moves up and down along with the small pipe, the idler wheels roll on the inner wall of the large pipe. The lifting stability of the lifting type cantilever crane can be effectively improved, and the lifting type cantilever crane is stable and smooth in lifting and small in abrasion.
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Description

Technical Field

[0001] The utility model relates to a lifting machinery, in particular to a lifting cantilever crane guide wheel device. Background Art

[0002] The length and height of a conventional cantilever crane are fixed, so it cannot be used when the usage scenario is changed or different working conditions are encountered. The structure of the lifting cantilever crane made in the past is relatively rough, and a large tube is usually used to cover a small tube for lifting. The accuracy is completely guaranteed by the difference between the inner wall of the large tube and the outer wall of the small tube. This results in a large processing size and high processing cost. In addition, the sliding friction loss is large, which leads to a large gap after a period of time, affecting the user experience. Utility Model Content

[0003] The utility model provides a guide wheel device for a lifting cantilever crane, which can effectively improve the lifting stability of the lifting cantilever crane, and the lifting of the lifting cantilever crane is stable and smooth with little wear.

[0004] The technical solution of this utility model:

[0005] A guide wheel device for a lifting cantilever crane, wherein the column of the lifting cantilever crane is composed of a large tube and a small tube, wherein the small tube is installed in the large tube and is in clearance with the large tube, wherein the small tube moves up and down in the large tube, and the upper end thereof is extended and retracted; wherein the guide wheel device is installed in the large tube, is located below the small tube, is rigidly connected to the small tube, and moves up and down with the small tube, wherein a nylon ring is installed at the upper end of the large tube, wherein the nylon ring is sleeved on the small tube and contacts the small tube;

[0006] The guide wheel device comprises a plurality of rollers, each of which is arranged in a circle and abuts against the inner wall of the large tube. When the guide wheel device moves up and down together with the small tube, each of the rollers rolls on the inner wall of the large tube.

[0007] The guide wheel device (lower) and the nylon ring (upper) work together to ensure that the column rises steadily and smoothly. The roller design greatly reduces the friction with the inner wall of the large tube.

[0008] The guide wheel device also includes a roller bracket, each roller is installed on the roller bracket, the upper end of the roller bracket is a pipe section, which is inserted into the lower port of the small tube and fixedly connected to the small tube by a plurality of bolts; the connection is firm and the disassembly and assembly are convenient.

[0009] The large pipe is provided with a plurality of reinforcing flanges, each of which is clamped on the large pipe, wherein one reinforcing flange is located on the upper end of the large pipe as the reinforcing flange, the nylon ring is embedded in the reinforcing flange and fixedly connected to the reinforcing flange by a plurality of bolts.

[0010] The bearing of the roller is a deep groove ball bearing; the roller rolls smoothly.

[0011] Grease is applied to the inner wall of the large tube to reduce friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation of a lifting cantilever crane guide wheel device.

[0013] In the figure, there is a large tube 1, a small tube 2, a guide wheel device 3, a roller 3-1, a roller bracket 3-2, a nylon ring 4, a reinforcing flange 5, and a reinforcing flange 6. DETAILED DESCRIPTION

[0014] As shown in the figure, a guide wheel device for a lifting cantilever crane is provided. The column of the lifting cantilever crane is composed of a large tube 1 and a small tube 2. The small tube 2 is installed in the large tube 1 and is in clearance with the large tube 1. The small tube 2 moves up and down in the large tube 1, and its upper end is telescopic. The guide wheel device 3 is installed in the large tube 1, located below the small tube 2, and is rigidly connected to the small tube 2, and moves up and down with the small tube 2. A nylon ring 4 is installed on the upper end of the large tube 1, and the nylon ring 4 is sleeved on the small tube 2 and contacts the small tube 2.

[0015] The guide wheel device 3 includes four rollers 3-1, each roller 3-1 is arranged in a circle and abuts against the inner wall of the large tube 1. When the guide wheel device 3 moves up and down with the small tube 2, each roller 3-1 rolls on the inner wall of the large tube 1;

[0016] The guide wheel device 3 also includes a roller bracket 3-2, each roller 3-1 is installed on the roller bracket 3-2, the upper end of the roller bracket 3-2 is a pipe section, which is inserted into the lower port of the small tube 2 and is fixedly connected to the small tube 2 by a plurality of bolts;

[0017] The large pipe 1 is provided with a reinforcing flange upper 5 and a reinforcing flange lower 6, which are clamped on the large pipe. The nylon ring 4 is embedded in the reinforcing flange upper 5 and fixedly connected with the reinforcing flange upper 5 by a plurality of bolts.

[0018] The bearing of the roller 3-1 is a deep groove ball bearing;

[0019] The inner wall of the large tube 1 is coated with grease.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A guide wheel device for a lifting cantilever crane, wherein the column of the lifting cantilever crane is composed of a large tube and a small tube, wherein the small tube is installed in the large tube and has a clearance fit with the large tube, and the small tube moves up and down in the large tube, and its upper end is telescopic; characterized in that: The guide wheel device is installed in the large tube, located below the small tube, and rigidly connected to the small tube, and moves up and down with the small tube. A nylon ring is installed on the upper end of the large tube, and the nylon ring is sleeved on the small tube and contacts the small tube. The guide wheel device comprises a plurality of rollers, each of which is arranged in a circle and abuts against the inner wall of the large tube. When the guide wheel device moves up and down together with the small tube, each of the rollers rolls on the inner wall of the large tube.

2. The lifting cantilever crane guide wheel device according to claim 1, characterized in that: The guide wheel device also includes a roller bracket, each roller is installed on the roller bracket, the upper end of the roller bracket is a pipe section, which is inserted into the lower port of the small tube and fixedly connected to the small tube by a plurality of bolts.

3. The lifting cantilever crane guide wheel device according to claim 1, characterized in that: The large pipe is provided with a plurality of reinforcing flanges, each of which is clamped on the large pipe, wherein one reinforcing flange is located on the upper end of the large pipe as the reinforcing flange, the nylon ring is embedded in the reinforcing flange and fixedly connected to the reinforcing flange by a plurality of bolts.

4. The lifting cantilever crane guide wheel device according to claim 1, characterized in that: The bearing of the roller is a deep groove ball bearing.

5. The lifting cantilever crane guide wheel device according to claim 1, characterized in that: Grease is applied to the inner wall of the large tube.