CN218754684U

CN218754684U - Telescopic crane

Info

Publication number: CN218754684U
Application number: CN202222821777.7U
Authority: CN
Inventors: 王人卫; 刘正阳
Original assignee: HANGZHOU YINGJIANG MACHINERY MANUFACTURE Co Ltd
Current assignee: HANGZHOU YINGJIANG MACHINERY MANUFACTURE Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-28
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a telescopic crane, which comprises a crane body, wherein the crane body comprises a bottom frame, a bracket, a lifting arm and a jacking oil cylinder, and the bottom of the bottom frame is provided with a roller assembly; the bottom of the bracket is pivoted on the bottom frame; the lifting arm comprises a lifting arm and an extension arm, the lifting arm is of a hollow box-shaped structure, the rear end part of the lifting arm is pivoted to the top of the support, and the lifting arm and the extension arm are sleeved to form a sliding telescopic structure; the front end part of the extension arm is provided with a lifting hook; the bottom of the jacking oil cylinder is pivoted on the support, the telescopic end of the jacking oil cylinder is hinged with the bottom of the lifting arm, the lifting arm is provided with a driving mechanism, the driving mechanism comprises a driving oil cylinder, an oil cylinder mounting seat and a piston rod mounting seat, and the oil cylinder mounting seat and the piston rod mounting seat are respectively arranged on the lifting arm and the extension arm; the cylinder body of the driving oil cylinder is pivoted on the oil cylinder mounting seat; the piston rod of the driving oil cylinder is pivoted on the piston rod mounting seat. The utility model has the advantages that: the horizontal position of the weight can be adjusted; the operation is easy and labor-saving; the frictional resistance is small.

Description

Telescopic crane

Technical Field

The utility model relates to a telescopic loop wheel machine belongs to industrial vehicle and engineering machine tool accessory technical field.

Background

In the process of repairing or maintaining the automobile, the engine is required to be checked or repaired frequently, and at the moment, the engine needs to be disassembled and hoisted by using a crane. However, the telescopic boom of the existing crane has the following problems: the length can be adjusted only before hoisting, and the length of the suspension arm cannot be adjusted after the heavy object is hoisted; after the weight is lifted, the horizontal position of the weight cannot be adjusted; and the davit is great at the adjustment in-process, and whole accommodation process is wasted time and energy, reduces maintenance efficiency.

Disclosure of Invention

In order to solve the problem, the utility model provides a can be at the telescopic loop wheel machine of lifting by crane in-process automatically regulated davit length, laborsaving in trouble-saving.

The utility model relates to a telescopic crane, which comprises a crane body, wherein the crane body comprises a bottom frame, a bracket, a lifting arm and a lifting oil cylinder, and the bottom of the bottom frame is provided with a roller assembly; the bottom of the bracket is pivoted on the bottom frame; the lifting arm comprises a lifting arm and an extension arm, the lifting arm is of a hollow box-type structure, the rear end part of the lifting arm is pivoted to the top of the support, and the lifting arm and the extension arm are sleeved to form a sliding telescopic structure; the front end part of the extension arm is provided with a lifting hook; the bottom pin joint of jack-up hydro-cylinder is on the support column, and the flexible end of jack-up hydro-cylinder is articulated its characterized in that with the davit bottom: the lifting arm is provided with a driving mechanism, the driving mechanism comprises a driving oil cylinder, an oil cylinder mounting seat and a piston rod mounting seat, and the oil cylinder mounting seat and the piston rod mounting seat are respectively arranged on the lifting arm and the extension arm; the cylinder body of the driving oil cylinder is pivoted on the oil cylinder mounting seat; the piston rod of the driving oil cylinder is pivoted on the piston rod mounting seat.

Preferably, the driving oil cylinder is a bidirectional oil cylinder, and a reversing switch for controlling the extension direction of the piston rod is arranged on a cylinder body of the bidirectional oil cylinder.

Preferably, the suspension arm is provided with a plurality of plug pin holes for plugging positioning pins, the extension arm is provided with a plurality of positioning holes for plugging positioning pins along the movement direction, and positioning pins are plugged into at least one group of the plug pin holes and the positioning holes which are overlapped.

Preferably, the bottom of the front end of the suspension arm is provided with a first rolling mechanism, the first rolling mechanism comprises a first roller seat, a first roller pin shaft and a first roller, and the first roller seat is arranged beside the bottom hole of the suspension arm; the first roller is rotatably arranged on the first roller seat through a first roller pin shaft, and the top of the first roller falls into the suspension arm and is in contact with the outer wall of the extension arm.

Preferably, a second rolling mechanism is arranged at the top of the rear end of the extension arm, the second rolling mechanism comprises a second roller pin shaft and a second roller, and the second roller pin shaft is rotatably arranged at the top of the rear end of the extension arm; the second idler wheel is installed on the second idler wheel pin shaft, and the top of the second idler wheel is in contact with the inner wall of the suspension arm.

When the jacking oil cylinder lifts a heavy object to a proper height, if the horizontal position needs to be properly adjusted, the reversing switch of the bidirectional oil cylinder can be rotated, and the handle of the bidirectional oil cylinder is swung to enable the piston rod to stretch and retract so as to drive the extension arm to a proper position.

The utility model has the advantages that:

(1) After the weight is lifted, the horizontal position of the weight can be properly adjusted, and the requirement of position adjustment is easily met;

(2) The structure is simple and reliable, and the operation is easy and labor-saving;

(3) The friction resistance is small and the stretching process is labor-saving.

Drawings

FIG. 1 is a diagram illustrating an extended state of a boom of the present invention;

fig. 2 is a shortening state diagram of the lifting arm of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

The utility model relates to a telescopic crane, which comprises a crane body, wherein the crane body comprises a bottom frame 1, a bracket 2, a lifting arm 3 and a jacking oil cylinder 4, and the bottom of the bottom frame 1 is provided with a roller assembly 11; the bottom of the bracket 2 is pivoted on the bottom frame 1; the lifting arm 3 comprises a lifting arm 31 and an extension arm 32, the lifting arm 31 is of a hollow box-shaped structure, the rear end part of the lifting arm 31 is pivoted to the top of the support 2, and the lifting arm 31 and the extension arm 32 are sleeved to form a sliding telescopic structure; a hook 33 is installed at the front end of the extension arm 32; the bottom of the jacking oil cylinder 4 is pivoted on the support 2, a jacking piston rod 41 of the jacking oil cylinder 4 is hinged with the bottom of the lifting arm 3, a driving mechanism 5 is arranged on the lifting arm 3, the driving mechanism 5 comprises a driving oil cylinder 51, an oil cylinder mounting seat 52 and a piston rod mounting seat 53, and the oil cylinder mounting seat 52 and the piston rod mounting seat 53 are respectively welded on the lifting arm 31 and the extension arm 32; the cylinder body 511 of the driving oil cylinder 51 is pivoted on the oil cylinder mounting seat 52 through a first bolt 54; the piston rod 512 of the driving cylinder 51 is pivotally connected to the piston rod mounting seat 53 through the second bolt 55.

In some embodiments of the present invention, the suspension arm 31 is a hollow box structure formed by welding four plates, and the extension arm 32 is slidably inserted into the suspension arm 31. The extension arm 32 is a hollow box-shaped structure formed by welding four plates and can be conveniently inserted into the suspension arm 31.

In some embodiments of the present invention, the support 2 includes a support pillar 21 and a pull rod 22, the bottom of the support pillar 21 is pivoted to the bottom frame 1, and the top is connected to the suspension arm 31; the bottom end of the pull rod 22 is hinged with the rear part of the base frame 1, and the top part of the pull rod 22 is hinged with the upper part of the support column 21, so that the support column 21, the pull rod 22 and the base frame 1 form a triangular support, and the stability of the support is improved.

In some embodiments of the present invention, the lifting cylinder 4 and the driving cylinder 51 are both provided with a handle, and the handle controls the operation of the corresponding cylinder through a pressing handle.

In some embodiments of the present invention, the driving cylinder 51 is a two-way cylinder, and a reversing switch 513 for controlling the extension direction of the piston rod is provided on the cylinder body of the two-way cylinder, so that the extension arm 32 can be adjusted in a two-way telescopic manner.

The utility model discloses an in some embodiments, the lateral wall of davit 31 is equipped with a plurality of bolt holes 311 that are used for pegging graft locating pin 37, and the lateral wall of extension arm 32 is equipped with a plurality of locating holes 321 that are used for pegging graft the locating pin along the direction of motion, and has pegged graft locating pin 34 in the bolt hole 311 that coincides mutually and the locating hole 321, fixes a position extension arm 32's telescopic position.

In some embodiments of the present invention, a first rolling mechanism 35 is disposed at the bottom of the front end of the boom 31, the first rolling mechanism 35 includes a first roller seat 351, a first roller pin 352, and a first roller 353, the first roller seat 351 is disposed beside the bottom hole of the boom 31; the first roller 353 is rotatably mounted on the first roller seat 351 by the first roller pin 352, and the top of the first roller 353 falls into the boom 31 and contacts the outer wall of the extension arm 32.

In some embodiments of the present invention, the second rolling mechanism 36 is disposed at the top of the rear end of the extension arm 32, the second rolling mechanism 36 includes a second roller pin 361 and a second roller 362, and the second roller pin 361 is rotatably disposed at the top of the rear end of the extension arm 32; the second roller 362 is mounted on the second roller pin 361, and the top of the second roller 362 is in contact with the inner wall of the boom 31.

Except that the first roller 353 is in contact with the outer wall of the extension arm 32 and the second roller 362 is in contact with the inner wall of the suspension arm, a gap is reserved between the outer wall of the extension arm 32 and the suspension arm 31, and friction force is effectively reduced.

At ordinary times, the extension arm 32 is contracted in the suspension arm 31, when the lifting oil cylinder 4 lifts a heavy object to a proper height during use, when the horizontal position of a cargo needs to be adjusted, the reversing switch 513 of the bidirectional oil cylinder can be rotated, and the piston rod is stretched after the handle of the bidirectional oil cylinder is swung, so that the extension arm 32 is driven to be pulled out or contracted to a proper position. Since the first rolling mechanism and the second rolling mechanism are supported between the boom 31 and the extension arm 32 so that the movement therebetween is rolling rather than frictional movement, the frictional force is greatly reduced.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A telescopic crane comprises a crane body, wherein the crane body comprises a bottom frame, a support, a lifting arm and a jacking oil cylinder, and a roller assembly is assembled at the bottom of the bottom frame; the bottom of the bracket is pivoted on the underframe; the lifting arm comprises a lifting arm and an extension arm, the lifting arm is of a hollow box-type structure, the rear end part of the lifting arm is pivoted to the top of the support, and the lifting arm and the extension arm are sleeved to form a sliding telescopic structure; the front end part of the extension arm is provided with a lifting hook; the bottom pin joint of jack-up hydro-cylinder is on the support column, and the flexible end of jack-up hydro-cylinder is articulated its characterized in that with the davit bottom: the lifting arm is provided with a driving mechanism, the driving mechanism comprises a driving oil cylinder, an oil cylinder mounting seat and a piston rod mounting seat, and the oil cylinder mounting seat and the piston rod mounting seat are respectively arranged on the lifting arm and the extension arm; the cylinder body of the driving oil cylinder is pivoted on the oil cylinder mounting seat; the piston rod of the driving oil cylinder is pivoted on the piston rod mounting seat.

2. The telescopic crane of claim 1, wherein: the driving oil cylinder is a bidirectional oil cylinder, and a reversing switch for controlling the extension direction of the piston rod is arranged on the cylinder body of the bidirectional oil cylinder.

3. The telescopic crane of claim 2, wherein: the suspension arm is provided with a plurality of bolt holes for inserting the positioning pins, the extension arm is provided with a plurality of positioning holes for inserting the positioning pins along the motion direction, and the positioning pins are inserted in at least one group of coincident bolt holes and positioning holes.

4. The telescopic crane of claim 3, wherein: the bottom of the front end of the suspension arm is provided with a first rolling mechanism, the first rolling mechanism comprises a first roller seat, a first roller pin shaft and a first roller, and the first roller seat is arranged beside a bottom hole of the suspension arm; the first roller is rotatably arranged on the first roller seat through a first roller pin shaft, and the top of the first roller falls into the suspension arm and is in contact with the outer wall of the extension arm.

5. The telescopic crane of claim 4, wherein: the top of the rear end of the extension arm is provided with a second rolling mechanism, the second rolling mechanism comprises a second roller pin shaft and a second roller, and the second roller pin shaft is rotatably arranged at the top of the rear end of the extension arm; the second idler wheel is installed on the second idler wheel pin shaft, and the top of the second idler wheel is in contact with the inner wall of the suspension arm.