CN112499483B

CN112499483B - Crane

Info

Publication number: CN112499483B
Application number: CN202110152909.9A
Authority: CN
Inventors: 刘玉堂; 杨晓航; 贾丰春; 周利利; 刘涛
Original assignee: Henan Institute of Technology
Current assignee: Henan Institute of Technology
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-04-30
Anticipated expiration: 2041-02-04
Also published as: CN112499483A

Abstract

The invention belongs to the technical field of hoisting, and particularly relates to a crane which comprises a base and a main beam, wherein the main beam is provided with a first slide rail and a second slide rail, the first slide rail is provided with a first traveling trolley for hoisting a workpiece in a sliding manner, the second slide rail is provided with a second traveling trolley for hoisting the workpiece, the main beam is also provided with an arc transition track for communicating the first slide rail and the second slide rail, and the main beam is provided with a rotation auxiliary assembly at the position of the arc transition track.

Description

Crane

Technical Field

The invention belongs to the technical field of hoisting, and particularly relates to a crane.

Background

At present, cranes are widely applied to the fields of aviation, aerospace, nuclear power and the like, can be vertically lifted and horizontally carried within a setting range, and along with the continuous expansion of capital construction projects, the application of the cranes in engineering construction is more and more extensive, and in order to improve the lifting efficiency, a patent document with the publication number of CN100460305C in the prior art discloses a rail type double-trolley gantry container crane, and specifically discloses that two trolleys are arranged on a main beam, and the double trolleys are respectively provided with independent rails and are respectively connected with a lifting driving mechanism, a trolley running mechanism, a lifting steel wire rope winding system and a hanger suspension system. However, in order to stably convey the work while hooking the long or thin members, the crane carriages according to the above-described embodiments must be moved on separate rails, and if the crane carriages cooperate with each other, the long or thin members must be inclined and positioned so as to extend beyond the front and rear sides of the main beam during the lifting process, thereby causing interference with other devices or buildings in the lifting path.

Disclosure of Invention

The invention provides a crane, which aims to solve the problem of interference risk in the cooperative operation of two hoisting trolleys in the prior art.

The crane adopts the following technical scheme:

a crane comprises a base arranged on a bottom surface, wherein two upright posts arranged at intervals along the left and right directions are arranged on the base, the upper ends of the two upright posts are connected through a main beam extending along the left and right directions, a first slide rail and a second slide rail arranged at intervals along the left and right directions are arranged on the main beam, a first travelling trolley for lifting a workpiece is arranged on the first slide rail in a sliding manner, a second travelling trolley for lifting the workpiece is arranged on the second slide rail, an arc transition track for communicating the first slide rail and the second slide rail is also arranged on the main beam, a rotary auxiliary assembly is arranged at a position close to the inner ring of the arc transition track on the main beam, the rotary auxiliary assembly comprises a rotary mechanism rotatably arranged on the main beam and a clamping jaw arranged on a rotary shaft of the rotary mechanism, and the clamping jaw extends towards the inner side close to the arc transition track, one side of the first walking trolley and one side of the second walking trolley, which are close to the clamping jaws, are respectively provided with a clamping block which slides along the vertical direction in a guiding manner, the clamping blocks are provided with an avoiding state which is positioned at the upper side or the lower side of the clamping jaws, the clamping blocks are also provided with a rotation auxiliary state which moves to the clamping jaws along the vertical direction in a guiding manner, and when the clamping blocks fall into the clamping jaws, the rotating mechanism drives the clamping jaws to rotate so as to realize the conversion of the corresponding walking trolley on the two slide rails.

Furthermore, the clamping jaw is provided with a telescopic part which is telescopically adjusted along the radial direction of the rotating shaft, and a clamping part arranged on the telescopic part, the telescopic part is provided with a sleeve connected with the rotating shaft, and a telescopic rod assembled in the sleeve, and one end of the telescopic rod positioned in the sleeve is connected with the interior of the sleeve through an elastic piece.

Furthermore, one end of the telescopic rod, which is positioned in the sleeve, in the sleeve is provided with a limiting part, and the sleeve is detachably provided with a stopping part in stopping fit with the limiting part.

Further, the stop part is of an annular structure in threaded connection with the sleeve.

Further, the elastic member is a spring.

Furthermore, the clamping part is provided with a clamping groove which extends along the vertical direction and is used for enabling the clamping block to fall into, the notch of the clamping groove is of a reducing structure with gradually reduced size, and two sides of the clamping block are provided with matching inclined planes in stop fit with the reducing structure.

The invention has the beneficial effects that:

the invention provides a crane which comprises a base and a main beam, wherein the main beam is provided with a first slide rail and a second slide rail, the first slide rail is provided with a first travelling trolley for lifting a workpiece in a sliding manner, the second slide rail is provided with a second travelling trolley for lifting the workpiece, the main beam is also provided with an arc transition track for communicating the first slide rail and the second slide rail, and the main beam is provided with a rotation auxiliary assembly at the position of the arc transition track.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a crane according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first slide rail, a second slide rail and a circular arc transition rail of the crane of the present invention;

FIG. 3 is a schematic view of the structure of the rotation assistance assembly of the crane of the present invention;

FIG. 4 is a schematic view of a clamping block of the crane of the present invention extending into a clamping slot to a minimum depth;

FIG. 5 is a schematic view of the gripping block of the crane of the present invention extending into the maximum depth of the gripping slot;

reference numerals:

1. the device comprises a base, 11, a column, 12, a main beam, 2, a clamping groove, 21, a necking structure, 22, a parallel section, 3, a clamping block, 31, a matching inclined surface, 32, a sliding part, 33, a limiting conical part, 4, a first sliding rail, 5, a second sliding rail, 6, a first travelling trolley, 7, a second travelling trolley, 8, a rotating mechanism, 81, a rotating shaft, 9, a clamping claw, 91, a sleeve, 92, a telescopic rod, 93, a stopping part, 94, a limiting part, 10 and an arc transition track.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms than those herein described and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

An embodiment of the crane of the present invention is shown in fig. 1 to 5, and includes a base 1 disposed on a bottom surface, and is characterized in that two upright posts 11 disposed at intervals in a left-right direction are disposed on the base 1, upper ends of the two upright posts 11 are connected by a main beam 12 extending in the left-right direction, the main beam 12 is provided with first slide rails 4 and second slide rails 5 disposed at intervals in the left-right direction, a first traveling trolley 6 for lifting a workpiece is slidably disposed on the first slide rail 4, a second traveling trolley 7 for lifting a workpiece is disposed on the second slide rail 5, the main beam 12 is further provided with an arc transition rail 10 for communicating the first slide rail 4 and the second slide rail 5, a rotation auxiliary assembly is disposed on the main beam 12 at a position close to the arc transition rail 10, referring to fig. 2, the rotation auxiliary assembly includes a rotation mechanism 8 rotatably disposed on the main beam 12, and a rotation auxiliary assembly, The clamping jaw 9 is arranged on a rotating shaft of the rotating mechanism 8, the clamping jaw 9 is cantilevered towards the inner side close to the arc transition track 10, and the clamping blocks 3 which slide in an up-and-down direction are arranged on one sides of the first travelling trolley 6 and the second travelling trolley 7 close to the clamping jaw 9.

The matching principle of the clamping claw 9 and the clamping block 3 is as follows: the clamping block 3 has an avoiding state located on the upper side or the lower side of the clamping jaw 9, the clamping block 3 further has a rotation assisting state which moves to the clamping jaw 9 along the vertical direction in a guiding mode, when the first walking trolley 6 moves to the position where the first slide rail 4 is connected with the arc transition rail 10, the clamping block 3 corresponds to the clamping jaw 9 in the vertical direction at the moment, the clamping block 3 moves upwards or downwards until the clamping block falls into the clamping jaw 9, and then the rotating mechanism 8 drives the clamping jaw 9 to rotate so as to achieve conversion of the corresponding walking trolley on the two slide rails. The corresponding walking trolley is driven by the power device when walking on the first sliding rail 4 and the second sliding rail 5, and can be driven by the power device and the rotation auxiliary component together or driven by the rotation auxiliary component alone when walking on the arc transition rail 10.

In this embodiment, the first slide rail 4 and the second slide rail 5 are both linear rails, the arc transition rail 10 is a 180-degree arc disposed at one end of the first slide rail 4 and the second slide rail 5, and the central axis of the rotating shaft of the rotation auxiliary assembly is disposed at the center of the arc transition rail 10; electric hoists for hooking workpieces or materials are arranged on the first travelling trolley 6 and the second travelling trolley 7; the first walking trolley 6 and the second walking trolley 7 are respectively provided with a power device for driving the corresponding walking trolley to walk on the slide rail, when the lifting device is used, the first walking trolley 6 and the second walking trolley 7 can respectively lift materials, and the first walking trolley 6 and the second walking trolley 7 can walk on the same slide rail to cooperatively operate under the auxiliary action of the rotary auxiliary assembly, so that the elongated members can be vertically lifted.

Referring to fig. 3, when the corresponding traveling trolley travels on the circular arc transition track 10, when the wind above the main beam generates an acting force on the corresponding traveling trolley in the radial direction of the circular arc transition track, the corresponding traveling trolley will slightly incline in the direction away from or close to the rotating shaft 81, because the corresponding traveling trolley is connected with the clamping claw 9 through the clamping block 3, the inclination of the corresponding traveling trolley will generate a pulling force or a pushing force on the clamping claw 9, which has long influence on the service life of the rotating mechanism 8, in order to enable the rotation auxiliary component to have better adaptability, therefore, the clamping claw 9 in this embodiment has a telescopic part telescopically adjusted in the radial direction of the rotating shaft, a clamping part arranged on the telescopic part, the telescopic part has a sleeve 91 connected with the rotating shaft, and a telescopic rod 92 assembled in the sleeve 91, one end of the telescopic rod 92 in the sleeve 91 is connected with the interior of the sleeve 91 through an elastic member, specifically, the elastic member is a spring.

Taking the case that the corresponding trolley is slightly inclined toward the direction close to the rotating shaft 81 as an example, the clamping claws 9 receive the thrust from the clamping block 3, specifically, under the action of the thrust of the clamping block 3, the telescopic rods 92 are contracted into the sleeves 91 and compress the elastic members, so that the thrust can be prevented from being directly transmitted to the joints of the sleeves 91 and the rotating shaft 81, and the elastic members can enable the telescopic rods 92 to adaptively adjust and timely reset the size contracted into the sleeves 91 according to the actual condition that the corresponding trolley is slightly inclined.

Referring to fig. 3, a limiting portion 94 is disposed at one end of the telescopic rod 92 located in the sleeve 91 and located in the sleeve 91, and a stopping portion 93 for stopping and matching with the limiting portion 94 is detachably disposed on the sleeve 91; specifically, the stopper 93 has an annular structure screwed to the sleeve 91.

Referring to fig. 4 and 5, in the present embodiment, the clamping portion has a clamping groove 2 extending in the up-down direction for the clamping block 3 to fall into, the notch of the clamping groove 2 is a reduced structure 21 with gradually decreasing size, and two sides of the clamping block 3 have matching inclined surfaces 31 in stop-fit with the reduced structure 21; specifically, the clamping block 3 is provided with a rectangular sliding part 32 which is suspended from one end of the matching inclined surface 31 close to the clamping part, the clamping block 3 is further provided with a limiting taper part 33 which is gradually increased from one end of the matching inclined surface 31 far away from the clamping part to the direction of the corresponding travelling trolley, the side walls at two sides of the clamping groove 2 are provided with parallel sections 22 which are in sliding fit with the rectangular sliding part 32, the length of the parallel sections 22 is larger than that of the sliding part 32, and when the corresponding trolley travels on the arc transition rail 10, the sliding part 32 can slide on the parallel sections 22, so that the influence of bumping during the travelling of the trolley on the installation stability of the rotation auxiliary assembly can be avoided.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A crane comprises a base arranged on the bottom surface, and is characterized in that two upright posts arranged at intervals along the left-right direction are arranged on the base, the upper ends of the two upright posts are connected through a main beam extending along the left-right direction, a first slide rail and a second slide rail arranged at intervals along the left-right direction are arranged on the main beam, a first travelling trolley for lifting a workpiece is arranged on the first slide rail in a sliding manner, a second travelling trolley for lifting the workpiece is arranged on the second slide rail, an arc transition track for communicating the first slide rail and the second slide rail is also arranged on the main beam, rotary auxiliary components are arranged at positions close to the inner ring of the arc transition track on the main beam, each rotary auxiliary component comprises a rotary mechanism rotatably arranged on the main beam and a clamping claw arranged on a rotary shaft of the rotary mechanism, and the clamping claws are cantilevered towards the inner side close to the arc transition track, one side of the first walking trolley and one side of the second walking trolley, which are close to the clamping jaws, are respectively provided with a clamping block which slides along the vertical direction in a guiding manner, when the clamping blocks are positioned on the upper side or the lower side of the clamping jaws, the clamping blocks are in an avoiding state, when the clamping blocks move to the clamping jaws along the vertical direction in a guiding manner, the clamping blocks are in a rotation auxiliary state, and after the clamping blocks fall into the clamping jaws, the rotating mechanism drives the clamping jaws to rotate so as to realize the conversion of the corresponding walking trolley on the two slide rails.

2. The crane according to claim 1, wherein the gripper jaw has a telescopic part telescopically adjustable in a radial direction of the rotating shaft, a gripping part provided on the telescopic part, the telescopic part has a sleeve connected with the rotating shaft, and a telescopic rod fitted in the sleeve, and one end of the telescopic rod in the sleeve is connected with the inside of the sleeve through an elastic member.

3. The crane according to claim 2, wherein the telescopic rod has a limiting portion at an end thereof located in the sleeve, and the sleeve has a stop portion detachably engaged with the limiting portion.

4. A crane as claimed in claim 3, wherein the stop is an annular structure in threaded connection with the sleeve.

5. A crane as claimed in claim 2, wherein said resilient member is a spring.

6. The crane according to any one of claims 2 to 5, wherein the clamping portion is provided with a clamping groove extending in the up-down direction for allowing the clamping block to fall into, the clamping groove is a tapered structure with a gradually decreasing size from a notch to a groove bottom, and two sides of the clamping block are provided with matching inclined surfaces in stop matching with the tapered structure.