CN210480659U

CN210480659U - Crane convenient to adjust

Info

Publication number: CN210480659U
Application number: CN201921124548.1U
Authority: CN
Inventors: 李昌良; 李昌财
Original assignee: Hefei Hongfa Heavy Machinery Co ltd
Current assignee: Hefei Hongfa Heavy Machinery Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-08
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to a hoist technical field, concretely relates to convenient hoist of adjusting, including crossbeam, screw rod, first motor, movable block, sleeve, first lead screw, base, second motor, worm wheel, universal wheel, second lead screw, third motor, electric block, fourth motor, reel, haulage rope, lifting hook seat and lifting hook. This device is because the screw rod both ends are turned to opposite, so first motor drive screw rotates the position that changes sleeve and base, screw rod and movable block screwed connection can guarantee sleeve and base and can relatively fixed after removing, it is unstable to have avoided its crossbeam that freely slides to cause, improve the stability and the security of whole hoist, rotate through first lead screw and promote the sleeve and remove the gravity that can avoid the goods and crush the second motor, plane bearing makes things convenient for the lifting hook to rotate, make it can rotate the direction that is fit for the goods and hangs, high durability and convenient use, to a great extent has reduced intensity of labour, and the efficiency is improved.

Description

Crane convenient to adjust

Technical Field

The utility model relates to a hoist technical field, concretely relates to convenient hoist of adjusting.

Background

The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. The crane mainly comprises a hoisting mechanism, a running mechanism, a luffing mechanism, a slewing mechanism, a metal structure and the like. The hoisting mechanism is the basic working mechanism of the crane, mostly consists of a hanging system and a winch, and also lifts heavy objects through a hydraulic system. The running mechanism is used for longitudinally and horizontally moving a heavy object or adjusting the working position of the crane and generally comprises a motor, a speed reducer, a brake and wheels. The amplitude variation mechanism is only arranged on the jib crane, the amplitude of the jib crane is reduced when the jib crane is lifted up, the amplitude of the jib crane is increased when the jib crane is lifted down, and the jib crane is divided into a balanced amplitude variation mode and a non-balanced amplitude variation mode. The slewing mechanism is used for enabling the arm support to slew and consists of a driving device and a slewing bearing device. The metal structure is the framework of the crane, and the main bearing parts such as a bridge frame, an arm support and a portal frame can be box-shaped structures or truss structures, can also be web structures, and can use section steel as a supporting beam.

In addition, in the patent, publication No. CN208700467U, an adjustable crane, discloses a crane, in which the support frame is pushed inward or pulled outward to adapt to the width of the road surface, which is very inconvenient in manual adjustment, and the position of the support frame cannot be fixed after adjustment is completed, so that the support frame is easily moved automatically in the actual production process, which affects the stability of the whole crane, and is not beneficial to the normal operation of the crane, and there is a possibility of serious safety accidents.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a convenient hoist of adjusting.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

a crane convenient to adjust comprises a cross beam, wherein screw rods with opposite rotation directions at two ends are arranged in the cross beam, the screw rods are driven by a first motor, moving blocks are sleeved at two ends of each screw rod, the moving blocks downwards extend out of the cross beam and are fixed on a sleeve, a first screw rod in spiral connection is arranged in the sleeve, the first screw rod downwards penetrates out of the sleeve and extends into a base, a second motor is fixed in the base, a worm is fixed on an output shaft of the second motor and is meshed with a worm wheel fixed at the bottom of the first screw rod, a universal wheel is arranged on the bottom surface of the base, a second screw rod is further arranged in the cross beam and is driven by a third motor, an electric hoist which downwards extends out of the cross beam is sleeved on the second screw rod, a fourth motor is arranged inside the electric hoist, an output shaft of the fourth motor is fixedly connected with a winding drum, and a traction rope is wound on the winding, the haulage rope stretches out the electric hoist downwards and is connected with the lifting hook seat, lifting hook seat bottom is equipped with prevents having rotatable lifting hook.

Furthermore, a first gear is fixed in the middle of the screw rod, the first gear is meshed with a second gear, the second gear is fixedly connected with an output shaft of the first motor, and the first gear is fixed on the inner wall of the cross beam.

Furthermore, the lower end of the hook base is provided with a groove, a limiting plate is arranged in the groove, and the limiting plate is fixedly connected with a hook extending downwards out of the hook base.

Furthermore, a plane bearing is arranged in the groove, and the plane bearing is sleeved on the lifting hook and is located below the limiting plate.

The utility model has the advantages that: the two ends of the screw rod are oppositely rotated, so that the first motor drives the screw rod to rotate to drive the movable blocks at the two ends to move towards the middle, further the positions of the sleeve and the base are changed, the screw rod can conveniently pass through some areas with objects stacked on the bottom surface, the objects can be lifted by the bracket without carrying the objects, the labor intensity is greatly reduced, the efficiency is improved, in addition, the screw rod is in screw connection with the movable blocks, the sleeve and the base can be ensured to be relatively fixed after moving, the beam instability caused by free sliding of the sleeve is avoided, the stability and the safety of the whole crane are improved, the first screw rod is driven to rotate by the second motor to drive the sleeve to move upwards, the crane is suitable for the objects with different heights, the second motor can be prevented from being damaged by the gravity of the objects by pushing the sleeve to move by the rotation of the first screw rod, the second motor drives, make first lead screw pivoted stable, second lead screw and screw rod stagger each other, and both do not influence each other, and third motor drive second lead screw rotates, and the goods is conveniently hoisted about the removal of messenger's electric hoist, and plane bearing makes things convenient for the lifting hook to rotate, makes it can rotate the direction that is fit for the goods and hangs, convenient to use, and to a great extent has reduced intensity of labour, has improved efficiency.

Drawings

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

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic side view of the cross beam of the present invention;

fig. 4 is a schematic connection diagram of the electric hoist of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-beam, 2-screw rod, 3-first motor, 4-moving block, 5-sleeve, 6-first screw rod, 7-base, 8-second motor, 9-worm, 10-worm wheel, 11-universal wheel, 12-second screw rod, 13-third motor, 14-electric hoist, 15-fourth motor, 16-winding drum, 17-traction rope, 18-hook seat, 19-hook, 20-first gear, 21-second gear, 22-groove, 23-limiting plate and 24-plane bearing.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected to the inside of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in the attached drawings 1 to 4, a crane convenient to adjust comprises a cross beam 1, wherein a screw rod 2 with opposite rotation directions at two ends is arranged in the cross beam 1, the screw rod 2 is convenient to adjust the position of a moving block 4, and simultaneously the moving block 4 can be relatively fixed after moving, the screw rod 2 is driven by a first motor 3, the first motor 3 is connected to a power supply through an electric wire, which belongs to the common technology in engineering and is not repeated, the moving block 4 is sleeved at two ends of the screw rod 2, the moving block 4 extends downwards out of the cross beam and is fixed on a sleeve 5, a first screw rod 6 in spiral connection is arranged in the sleeve 5, the first screw rod 6 extends downwards out of the sleeve 5 and extends into a base 7, a second motor 8 is fixed in the base 7, the second motor 8 is connected to the power supply through an electric wire, which belongs to the common technology in engineering and is not required any longer, a worm 9 is fixed on an output shaft of the second motor, base 7 bottom surface is equipped with universal wheel 11, make things convenient for whole hoist to remove, still be equipped with second lead screw 12 in the crossbeam 1, second lead screw 12 is driven by third motor 13, third motor 13 passes through electric wire connection to the power, this belongs to common technique in the engineering, just no longer give unnecessary details, the cover is equipped with electric block 14 of downwardly extending the crossbeam on the second lead screw 12, the inside fourth motor 15 that is equipped with of electric block 14, fourth motor 15 passes through electric wire connection to the power, this belongs to common technique in the engineering, just no longer give unnecessary details, fourth motor 15 output shaft and reel 16 fixed connection, around having haulage rope 17 on the reel 16, haulage rope 17 stretches out electric block 14 downwards and is connected with lifting hook seat 18, lifting hook seat 18 bottom is equipped with prevents having rotatable lifting hook 19.

A first gear 20 is fixed in the middle of the screw rod 2 to ensure that the screw rod 2 is stressed uniformly, the first gear 20 is meshed with a second gear 21, the second gear 21 is fixedly connected with an output shaft of the first motor 3, and the first gear 20 is fixed on the inner wall of the cross beam.

The lower end of the hook seat 18 is provided with a groove 22, a limiting plate 23 is arranged in the groove 22, the limiting plate 23 is fixedly connected with a hook 19 extending downwards out of the hook seat 18, and the limiting plate 23 can prevent the hook 19 from falling off from the hook seat 18.

The groove 22 is internally provided with a plane bearing 24, the plane bearing 24 is sleeved on the lifting hook 19 and is positioned below the limiting plate 23, and the plane bearing 24 facilitates the lifting hook 19 to rotate to a proper angle.

When in use, the first motor 3 is started firstly, the first motor 3 drives the screw rod 2 to rotate through the second gear 21 and the first gear 20, the screw rod 2 drives the moving block 4 to move towards the middle, the moving block 4 drives the sleeve 5 and the base 7 to move, when the moving block 4 moves to a designated position, the first motor 3 is turned off, and then the whole crane is moved to the vicinity of the cargo, then the second motor 8 is started, the second motor 8 drives the first screw rod 6 to rotate through the transmission of the worm wheel 10 and the worm 9, the first screw rod 6 drives the sleeve 5 to move upwards, further driving the beam 1 to move upwards, closing the second motor 8 after the beam 1 moves to a specified position, and then, starting the third motor 13, driving the second screw rod 12 to rotate by the third motor 13, driving the electric hoist 14 to move to a position corresponding to the goods by the second screw rod 12, then closing the third motor 13, and then hooking the goods by the lifting hook 19.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The crane convenient to adjust comprises a cross beam (1) and is characterized in that a screw rod (2) with two opposite rotating directions is arranged in the cross beam (1), the screw rod (2) is driven by a first motor (3), moving blocks (4) are sleeved at two ends of the screw rod (2), the moving blocks (4) extend out of the cross beam (1) downwards and are fixed on a sleeve (5), a first screw rod (6) in spiral connection is arranged in the sleeve (5), the first screw rod (6) penetrates out of the sleeve (5) downwards and extends into a base (7), a second motor (8) is fixed in the base (7), a worm (9) is fixed on an output shaft of the second motor (8), the worm (9) is meshed with a worm wheel (10) fixed at the bottom of the first screw rod (6), a universal wheel (11) is arranged on the bottom surface of the base (7), and a second screw rod (12) is further arranged in the cross beam (1), second lead screw (12) are driven by third motor (13), the cover is equipped with electric block (14) of downwardly extending crossbeam (1) on second lead screw (12), inside fourth motor (15) that is equipped with of electric block (14), fourth motor (15) output shaft and reel (16) fixed connection, the coiling has haulage rope (17) on (16), haulage rope (17) downwardly extending electric block (14) and be connected with lifting hook seat (18), lifting hook seat (18) bottom is equipped with prevents having rotatable lifting hook (19).

2. An adjustable crane according to claim 1, wherein a first gear (20) is fixed in the middle of the screw rod (2), the first gear (20) is meshed with a second gear (21), the second gear (21) is fixedly connected with an output shaft of the first motor (3), and the first gear (20) is fixed on the inner wall of the cross beam (1).

3. An adjustable crane according to claim 1, wherein the lower end of the hook base (18) is provided with a groove (22), a limiting plate (23) is arranged in the groove (22), and the limiting plate (23) is fixedly connected with a hook (19) extending downwards out of the hook base (18).

4. An adjustable crane according to claim 3, wherein a plane bearing (24) is arranged in the groove (22), and the plane bearing (24) is sleeved on the lifting hook (19) and is positioned below the limiting plate (23).