CN219217378U

CN219217378U - Multipurpose tower arm

Info

Publication number: CN219217378U
Application number: CN202320240880.4U
Authority: CN
Inventors: 刘栋; 刘昂; 侯文礼; 朱发浩
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-20
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a multipurpose tower arm in the technical field of crawler crane hoisting, which aims to solve the problems that a bracket between a tower arm working condition and an auxiliary arm working condition cannot be used commonly in the prior art and a new bracket needs to be replaced in the process of needing to replace the working condition. The utility model can meet the requirements of the working condition of the auxiliary arm through the disassembly and assembly of the components while meeting the working condition of the tower arm, is convenient to use and reduces the operation cost.

Description

Multipurpose tower arm

Technical Field

The utility model relates to a multipurpose tower arm, and belongs to the technical field of crawler crane hoisting.

Background

With the continuous development of society, the demands of various industries on lifting functions are becoming more and more abundant, wherein a crawler crane is a mobile crane which is used for partially mounting lifting operations on a crawler chassis and walking by means of a crawler device. In order to meet the development of industry, the tonnage of the crawler crane is also larger and larger, the working conditions are also more and more abundant, and the working conditions of the tower arm and the auxiliary arm are two important working conditions.

The existing bracket between the working condition of the tower arm and the working condition of the auxiliary arm cannot be used universally, the cost including production, transportation, storage, disassembly and assembly is improved, a new bracket needs to be disassembled and replaced again in the process of needing to replace the working condition, the operation is complex, the time consumption is long, and the working efficiency is affected.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the multipurpose tower arm, which can meet the requirements of the working condition of the auxiliary arm through the disassembly and assembly of components while meeting the working condition of the tower arm.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: the utility model provides a multipurpose tower arm, includes main arm and tower auxiliary arm, tower auxiliary arm end is articulated with the main arm top, tower auxiliary arm end still articulates there is the fore-stock, the fore-stock is connected through the upper arm plate with the top of tower auxiliary arm, is located articulated on the main arm of fore-stock below has the back support, the back support passes through pulley mechanism with the top of fore-stock and links to each other, and passes through the lower arm plate with the main arm and be connected.

Optionally, the pulley mechanism includes assembly pulley and wire rope, the quantity of assembly pulley is 2, locates the top of fore-stock and back support respectively, and it includes pulley and pulley shaft, the top of fore-stock and back support is located to the pulley shaft, the pulley cover is located on the pulley shaft, wire rope winds and locates on two pulleys.

Optionally, a pin shaft is arranged at one side of the two ends of the pulley shaft, which is close to the rear bracket, and the pin shaft is used for fixing one end of the pull-down plate when the pulley shaft is in the working condition of the auxiliary arm.

Optionally, the tower auxiliary arm includes tower arm top section, tower arm intermediate section and tower arm bottom section that from the top down connects gradually, the quantity of tower arm top section and tower arm bottom section is 1, and the quantity of tower arm intermediate section is a plurality of.

Optionally, detachable connection is adopted between the tower arm middle sections, and between the tower arm middle sections, the tower arm top sections and the tower arm bottom sections.

Optionally, the front bracket is hinged with the tail end of the tower auxiliary arm, and the rear bracket is hinged with the main arm through a pin shaft.

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

the utility model can simultaneously meet the working requirements of the working condition of the tower arm and the working condition of the auxiliary arm, and the angle between the front support and the rear support can be adjusted by winding and unwinding the steel wire rope when the tower arm is in the working condition, thereby being convenient for amplitude changing operation; when the working condition of the auxiliary arm is required to be changed, only the rear bracket and related parts are required to be removed, and the length of the pull-down plate is adjusted and then the pull-down plate is connected with the pin shafts on two sides of the pulley shaft of the front bracket;

the tower type auxiliary arm is provided with a plurality of sections, is detachable, can be suitable for different hoisting heights and amplitudes, and is simple to operate and convenient to use.

Drawings

FIG. 1 is a schematic illustration of a multi-purpose tower arm in a tower arm operating mode according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a pulley block of a multi-purpose tower arm according to an embodiment of the present utility model;

FIG. 3 is a schematic illustration of a multi-purpose tower arm in accordance with one embodiment of the present utility model in a secondary arm condition;

FIG. 4 is a schematic view of a multi-purpose tower arm in a shortest sub-arm condition according to an embodiment of the present utility model;

in the figure: a main arm 1, a tower auxiliary arm 2, a tower arm top section 21, a tower arm middle section 22, a tower arm bottom section 23, a front bracket 3, a rear bracket 4, a pull-up plate 5, a pull-down plate 6, a pulley block 7, a pulley 71, a pulley shaft 72, a pin shaft 73 and a steel wire rope 74.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Examples

As shown in fig. 1, the multipurpose tower arm provided by the embodiment of the utility model comprises a main arm 1 and a tower auxiliary arm 2, wherein the tail end of the tower auxiliary arm 2 is hinged with the top end of the main arm 1 and a front bracket 3 through a pin shaft, and the top ends of the front bracket 3 and the tower auxiliary arm 2 are connected through a pull-up plate 5, so that the distance between the front bracket 3 and the top end of the tower auxiliary arm 2 is fixed under the action of gravity.

The main arm 1 positioned below the front bracket 3 is also hinged with a rear bracket 4 through a pin shaft, and the rear bracket 4 is connected with the main arm 1 through a pull-down plate 6. As shown in fig. 2, pulley blocks 7 are respectively arranged at the top ends of the rear bracket 4 and the front bracket 3, each pulley block 7 comprises a pulley 71 and a pulley shaft 72, the pulley 71 is sleeved on the pulley shaft 72, and a steel wire rope 74 is wound on the two pulleys 71, so that the two pulley blocks are connected by using the steel wire rope 74, and the angle between the front bracket 3 and the rear bracket 4 can be adjusted by winding and unwinding the steel wire rope 74 through an external winch, so that the amplitude variation operation during operation is completed.

The two ends of the pulley shaft 72 are provided with pin shafts 73 on one side close to the rear bracket 4, when the auxiliary arm working condition is met, the rear bracket 4 and related components can be removed, and after the length of the pull-down plate 6 is adjusted, the pull-down plate is connected with the pin shafts 73 instead, so that the front bracket 3 is fixed.

Examples

Referring to fig. 3 to 4, on the basis of embodiment 1, the tower auxiliary arm of this embodiment includes a tower arm top section 21, a plurality of tower arm middle sections 22 and a tower arm bottom section 23 that are sequentially connected from top to bottom, and detachable connection is adopted between them, and according to different construction environments and conditions, the length of the tower auxiliary arm 2 can be adjusted to adapt to different hoisting heights and amplitudes.

The working principle of the utility model is as follows: when the tower arm working condition is met, the front support 3 is connected with the tower auxiliary arm 2 through the upper pull plate 5, and the distance between the front support 3 and the top end of the tower auxiliary arm 2 is fixed because the length of the upper pull plate 5 is unchanged. The top ends of the front support 3 and the rear support 4 are connected through pulley blocks and steel wire ropes 74, the distance between the front support 3 and the rear support 4 can be adjusted by utilizing an external winch to retract and release the steel wire ropes 74, and finally the angle of the tower type auxiliary arm 2 is adjusted.

When the working condition of the auxiliary arm is changed, the front bracket 3 is still connected with the top end of the tower auxiliary arm 2 through the upper pull plate 5, the rear bracket 4 and related components are removed, the length of the lower pull plate 6 is adjusted, the lower pull plate 6 is formed by connecting a plurality of plate groups together through pin shafts, part of the plate groups are removed or added when the length of the lower pull plate 6 is adjusted, and then one end, connected with the rear bracket, of the lower pull plate 6 is connected with the pin shaft 73 instead, so that the whole body is in a fixed state.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A multipurpose tower arm, characterized in that: including main arm and tower auxiliary arm, tower auxiliary arm end is articulated with the main arm top, tower auxiliary arm end still articulates there is the fore-stock, the fore-stock is connected through the upper arm plate with the top of tower auxiliary arm, is located articulated on the main arm of fore-stock below has the back support, the back support passes through pulley mechanism with the top of fore-stock and links to each other, and passes through the lower arm connection with the main arm.

2. A multipurpose tower arm according to claim 1, wherein: the pulley mechanism comprises pulley blocks and steel wire ropes, the number of the pulley blocks is 2, the pulley blocks are respectively arranged at the top ends of the front support and the rear support, the pulley mechanism comprises pulleys and pulley shafts, the pulley shafts are arranged at the top ends of the front support and the rear support, the pulleys are sleeved on the pulley shafts, and the steel wire ropes are wound on the two pulleys.

3. A multipurpose tower arm according to claim 2, wherein: and pin shafts are arranged at one sides of the two ends of the pulley shaft, which are close to the rear bracket, and are used for fixing one end of the pull-down plate when the pulley shaft is in the working condition of the auxiliary arm.

4. A multipurpose tower arm according to claim 1, wherein: the tower auxiliary arm comprises a tower arm top section, a tower arm middle section and a tower arm bottom section which are sequentially connected from top to bottom, wherein the number of the tower arm top section and the number of the tower arm bottom section are 1, and the number of the tower arm middle section is multiple.

5. A multipurpose tower arm as claimed in claim 4, wherein: and the middle sections of the tower arms, the top sections of the tower arms and the bottom sections of the tower arms are detachably connected.

6. A multipurpose tower arm according to claim 1, wherein: the front support is hinged with the tail end of the tower-type auxiliary arm, and the rear support is hinged with the main arm through a pin shaft.