CN211310633U

CN211310633U - Sliding type cantilever structure of crane

Info

Publication number: CN211310633U
Application number: CN201922229811.XU
Authority: CN
Inventors: 吕景
Original assignee: Shanghai Jingzun Intelligent Equipment Co ltd
Current assignee: Shanghai Jingzun Intelligent Equipment Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-08-21
Anticipated expiration: 2029-12-13

Abstract

The utility model relates to a hoist technical field, in particular to slidingtype cantilever structure of hoist. The device comprises a sliding seat and a cantilever, wherein the cantilever is slidably mounted on the sliding seat, the sliding seat comprises a rack, a base, a support and a pulley block, the rack is connected with a stand column, the base is mounted on the rack, the support is arranged on the base, and the pulley block is mounted on the support. The utility model discloses cancelled the fixed connection mode of traditional cantilever and stand, but install the cantilever on sliding structure, make the cantilever can follow the sliding structure back-and-forth movement, sliding structure can be rotatory around rotary device, the cantilever just can be at radial back-and-forth movement like this, and can rotate around rotary device, rotate the rotatory mode no longer be the centering, but let the cantilever can all rotate around the center post at any point in effective work area, traditional cantilever crane has been solved when article are being close to the cantilever center post, the problem of rotation difficulty.

Description

Sliding type cantilever structure of crane

Technical Field

The utility model relates to a hoist technical field, in particular to slidingtype cantilever structure of hoist.

Background

The cantilever crane mainly achieves the purpose of hoisting the goods by matching the rotation of the suspension arm with the left and right movement of the lifting hook and the lifting of the lifting hook, is flexible in use and action, and meets various loading and unloading requirements. The cantilever cranes in common use today are cantilever cranes and jack-up cranes. The structure of the equipment is that the root of a cantilever is fixedly connected with a central column structure, the cantilever rotates around the central column in a centering way, and the cantilever cannot slide along the radial direction, so when an object is close to the central column of the cantilever, the object is difficult to rotate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem and provide a cantilever crane's cantilever structure, make the davit can follow the barycenter position of sliding construction radial movement in order to change the cantilever, even article when being close to the cantilever center post, rotate and still lightly.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides a slidingtype cantilever structure of hoist, includes the slide, still includes the cantilever, cantilever slidable mounting is on the slide, the slide includes frame, base, support and assembly pulley, the frame is connected with the stand, the pedestal mounting is in the frame, the support sets up on the base, the assembly pulley is installed on the support.

The utility model discloses further set up to: the rack is internally provided with a cavity separated by a plurality of partition plates. The cavity design has alleviateed the utility model discloses a weight, a plurality of baffles of setting have increased the intensity of whole frame.

The utility model discloses further set up to: the cantilever is internally in a cavity structure, the lower end face of the cavity is provided with a rail for rolling of the upper pulley set, and the upper portion of the cantilever is covered with a U-shaped cover plate. The track slides on sliding structure, has realized the radial movement of cantilever, and U type shroud is used for strengthening the structure of cantilever, protects the device in the cavity.

The utility model discloses further set up to: the support is the notch cuttype structure, the support is cross structure integrated into one piece with the base, the support both sides still are equipped with the backup pad. The integrated molding design makes the support more firm, and the backup pad is used for stabilizing the support.

The utility model discloses further set up to: the pulley block comprises an upper pulley block, a lower pulley block and positioning pulleys, the upper pulley block is two groups of symmetrical pulley combinations, each pulley combination comprises two pulleys, the pulleys are arranged at two ends of a rotating shaft, and the rotating shaft is arranged at the upper part of the support in a penetrating way; the lower pulley block is two groups of symmetrical pulley combinations, each pulley combination comprises two pulleys, the pulleys are arranged at two ends of a rotating shaft, the rotating shaft is arranged at the lower part of the support in a penetrating mode, and the positioning pulleys are arranged in the middle of the upper pulley block. The upper pulley group rolls on the inner surface of the track, the lower pulley group rotates below the track, and the upper pulley group and the lower pulley group are in a clamping state, so that friction in the sliding process of the track is reduced, and the track runs more stably and smoothly.

The utility model discloses further set up to: the up end of positioning pulley is less than the horizontal terminal surface of upper pulley group, positioning pulley is the pivoting, positioning pulley's external diameter is greater than the perpendicular distance of two pulley outermost terminal surfaces of upper pulley group, slightly is less than orbital transverse dimension. The design is used for preventing the cantilever from displacement when moving,

adopt the technical scheme of the utility model, there is following profitable technological effect: the utility model discloses cancelled the fixed connection mode of traditional cantilever and stand, but install the cantilever on sliding structure, make the cantilever can follow the sliding structure back-and-forth movement, sliding structure can be rotatory around rotary device, the cantilever just can be at radial back-and-forth movement like this, and can rotate around rotary device, rotate the rotatory mode no longer be the centering, but let the cantilever can all rotate around the center post at any point in effective work area, traditional cantilever crane has been solved when article are being close to the cantilever center post, the problem of rotation difficulty.

Drawings

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

Fig. 2 is an internal perspective view of the present invention.

Fig. 3 is a side view of the cantilever of the present invention.

Fig. 4 is a front view of the sliding structure of the present invention.

Fig. 5 is a top view of the sliding structure of the present invention.

Fig. 6 is a left side view of the sliding structure of the present invention.

Fig. 7 is a related dimension chart of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1, 2 and 3, a sliding type cantilever structure of a crane comprises a sliding base 1 and a cantilever 2, wherein the cantilever is of a hollow cavity structure, a rail 21 for rolling an upper pulley set is arranged on the lower end surface of the hollow cavity, specifically, as shown in fig. 3, a U-shaped cover plate 22 covers the upper part of the cantilever, and the cantilever 2 is slidably mounted on the sliding base 1; the slide includes frame 11, base 12, support 13 and assembly pulley 14, the frame is connected with 11 stands, base 12 installs in frame 11, support 13 sets up on base 12, assembly pulley 14 installs on support 13, the inside cavity that separates for a plurality of baffles 111 of frame 11, support 13 is the notch cuttype structure, support 13 is cross structure integrated into one piece with base 12, support 13 both sides still are equipped with backup pad 131.

The support and pulley block assembly of the slide of the present invention is described in detail below:

referring to fig. 4-7, the bracket 13 is of a stepped structure, the pulley block 14 is installed on the bracket 13, the pulley block 14 includes an upper pulley block 141, a lower pulley block 142 and a positioning pulley 143, the upper pulley block 141 is two sets of symmetrical pulley combinations, each pulley combination includes two pulleys, the pulleys are installed at two ends of a rotating shaft, and the rotating shaft is installed on the upper portion of the bracket 13 in a penetrating manner; lower pulley group 142 is two sets of symmetrical pulley combination, and every pulley combination includes two pulleys, the pulley mounting is at the both ends of pivot, the pivot link up installs the lower part at the support, positioning pulley 143 is installed in the middle of last assembly pulley, and positioning pulley's up end is less than the horizontal terminal surface of last pulley group, positioning pulley can be around the rotation of axle, positioning pulley's external diameter a is greater than the perpendicular distance b of two outermost terminal surfaces of pulley of last assembly pulley, slightly is less than orbital transverse dimension c, and specific size is as shown in fig. 7.

The utility model discloses a theory of operation: the cantilever does radial movement on sliding structure, and when the heavy object lifted by the lifting device is close to the upright post, the moment of inertia of the cantilever per se is not changed due to the short acting force arm of the traditional cantilever crane, so that the closer to the central post, the larger the force required for rotation is, the more inconvenient the rotation is. In the design, the rotary inertia of the cantilever is reduced in the process of backward yielding due to the sliding of the cantilever, so that the rotation can be kept light even if the cantilever is close to the upright post.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a slidingtype cantilever structure of hoist, includes the slide, its characterized in that: the cantilever is slidably mounted on the sliding seat, the sliding seat comprises a rack, a base, a support and a pulley block, the rack is connected with the stand column, the base is mounted on the rack, the support is arranged on the base, and the pulley block is mounted on the support.

2. The sliding type jib structure for crane according to claim 1, wherein: the rack is internally provided with a cavity separated by a plurality of partition plates.

3. The sliding type jib structure for crane according to claim 1, wherein: the cantilever is internally in a cavity structure, the lower end face of the cavity is provided with a rail for rolling of the upper pulley set, and the upper portion of the cantilever is covered with a U-shaped cover plate.

4. The sliding type jib structure for crane according to claim 1, wherein: the support is the notch cuttype structure, the support is cross structure integrated into one piece with the base, the support both sides still are equipped with the backup pad.

5. The sliding type jib structure for crane according to claim 1, wherein: the pulley block comprises an upper pulley block, a lower pulley block and positioning pulleys, the upper pulley block is formed by combining two groups of symmetrical pulleys, each pulley combination comprises two pulleys, the pulleys are arranged at two ends of a rotating shaft, and the rotating shaft is arranged at the upper part of the support in a penetrating manner; the lower pulley block is two groups of symmetrical pulley combinations, each pulley combination comprises two pulleys, the pulleys are arranged at two ends of a rotating shaft, the rotating shaft is arranged at the lower part of the support in a penetrating mode, and the positioning pulleys are arranged in the middle of the upper pulley block.

6. The sliding type jib structure for crane according to claim 5, wherein: the up end of positioning pulley is less than the horizontal terminal surface of upper pulley group, positioning pulley is the pivoting, positioning pulley's external diameter is greater than the perpendicular distance of two pulley outermost terminal surfaces of upper pulley group, slightly is less than orbital transverse dimension.