CN216426491U - Unpowered self-locking type lifting appliance - Google Patents

Abstract

The utility model belongs to the technical field of the hoist technique and specifically relates to an unpowered self-locking type hoist. The lifting device comprises a left chuck and a right chuck which are symmetrically arranged, wherein mounting shafts are arranged on two sides of the left chuck and the right chuck, the mounting shafts are movably mounted in mounting holes in clamping plates on the left side and the right side, lifting device pull rods are movably mounted at the tail ends of the left chuck and the right chuck through shafts, lifting shafts are movably mounted at the connecting positions of the lifting device pull rods, lifting lugs are mounted on the lifting shafts, the lower ends of the lifting lugs are in a hollow groove shape, clamping grooves are formed in the end faces of the lifting lugs, cross supporting plates are arranged below the lifting lugs, self-locking mechanisms are mounted on the cross supporting plates, and lock tongues of the self-locking mechanisms stretch into the clamping grooves. The unpowered self-locking lifting appliance locks or unlocks the lock tongue in the groove of the lifting lug by using the self-locking mechanism, 90-degree rotation of the lock tongue is completed by pressing each time, locking is completed in the lifting lug through the lock tongue card, an object needing to be lifted is clamped by the dead weight of the left and right chucks in an unlocking state, the object is pressed again through the lock tongue, and the left and right chucks are in an opening state at the moment.

Description

Unpowered self-locking type lifting appliance

Technical Field

The utility model belongs to the technical field of the hoist technique and specifically relates to an unpowered self-locking type hoist.

Background

The cement product hoisting and carrying is an important link in factory production, some factories can be provided with full-electric or full-hydraulic hoists under good conditions, some occasions have high requirements on unpowered hoists due to environmental restrictions, and the unpowered hoists have high requirements due to the problem of safety efficiency.

In the production process of cement products, after the products are cured, the products need to be carried out of a workshop to a storage yard by a lifting appliance, after the storage yard is cured, the products need to be lifted to a transport vehicle by the lifting appliance, and the cement products need to be lifted to a proper position by the lifting appliance on a construction site. The spreader is frequently used throughout the production of the cementitious product.

The existing unpowered lifting appliance is simple and has only a single function, a lifting appliance needs to be fixed when a worker lifts the lifting appliance, then a lifting hook is locked, and a clamp needs to be detached after the lifting appliance is lifted to a position. The use is troublesome and unreliable, and accidents such as danger and the like occur when the clamp is disassembled in a pit or high altitude.

In view of the above-mentioned defects, the designer actively makes research and innovation to create an unpowered self-locking type lifting appliance, so that the lifting appliance has industrial utilization value.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing an unpowered self-locking type hoist.

The utility model discloses an unpowered self-locking type hoist, left chuck and right chuck including bilateral symmetry installation, the both sides of left chuck and right chuck all have installation axle, install in the mounting hole of axle movable mounting on the splint of the left and right sides, the tail end of left chuck and right chuck has the hoist pull rod through axle movable mounting, the position movable mounting that meets of hoist pull rod has the hanging scroll, install the lug on the hanging scroll, the lower extreme of lug is the dead slot form, there is the draw-in groove on its terminal surface, there is the cross bracing board the below of lug, install self-locking mechanism on the cross bracing board, self-locking mechanism's spring bolt stretches into in the draw-in groove.

Further, self-locking mechanism includes the base of fixing on the cross bracing board through the bolt, there is the pivot cover through the bolt fastening on the base, the slide pin is installed through the bolt to the lateral part of pivot cover, the front end of slide pin inwards stretches into, its tip is located between removal cover and the uide bushing, it stretches into in the pivot cover to remove the cover, there is integrated into one piece's axis of rotation in removing the cover, the top of axis of rotation is rectangular form spring bolt, the lower extreme of axis of rotation has the uide bushing, the lower extreme of removing the cover has the arc gib block of dislocation with the upper end of uide bushing, the gib block is four, respectively on the circumference of removing the cover uide bushing, the upper end of removing the cover has the retaining ring with lug bottom contact.

Furthermore, vertical guide posts are arranged on the two sides of the rotating shaft sleeve on the base, and the guide posts are positioned on the two sides of the lifting lug.

Furthermore, the tail end of the rotating shaft is movably arranged in the base through a bearing.

Furthermore, a spring is arranged between the bottom of the guide sleeve and the base.

Furthermore, a guide groove is formed above the clamping plate, and the outside protruding end of the hanging shaft is clamped in the guide groove.

Furthermore, the tail ends of the left chuck and the right chuck are provided with hanging claw mounting shafts, the hanging claws are mounted on the hanging claw mounting shafts, two groups of convex chuck fixing shafts are arranged above and below the hanging claws, and the chucks are mounted on the chuck fixing shafts.

Furthermore, the outside welding of splint has spacing frame.

By the scheme, the invention at least has the following advantages: when the unpowered self-locking lifting appliance is used, the lock tongue is locked or unlocked in the groove of the lifting lug by the aid of the self-locking mechanism, 90-degree rotation of the lock tongue is completed by pressing each time, locking is completed by clamping the lock tongue in the lifting lug, objects needing to be lifted are clamped by the dead weight of the left and right chucks in an unlocking state, the left and right chucks are pressed again and locked by the lock tongue, and the left and right chucks are in an opening state at the moment.

The whole mechanism is reliable and safe, is convenient to operate, greatly increases the working efficiency and reduces the dangerous condition during working.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of the lifting lug of the present invention;

fig. 3 is a bottom view of fig. 2 of the present invention;

fig. 4 is a perspective view of the lower half of the present invention;

fig. 5 is a front view of fig. 4 of the present invention;

fig. 6 is an exploded schematic view of fig. 1 of the present invention;

fig. 7 is a cross-sectional view of the present invention;

fig. 8 is a partially enlarged schematic view of fig. 7 of the present invention;

fig. 9 is a sectional view of the self-locking mechanism of the present invention;

fig. 10 is a perspective view of the self-locking mechanism of the present invention;

fig. 11 is a second perspective view of the self-locking mechanism of the present invention;

1. the lifting device comprises a left chuck, a right chuck, a left mounting shaft, a right mounting shaft, a clamping plate, a lifting appliance pull rod, a lifting shaft, a lifting lug, a clamping groove, a transverse supporting plate, a self-locking mechanism, a locking tongue, a lifting claw mounting shaft, a lifting claw, a clamping claw fixing shaft, a clamping head, a limiting frame, a clamping plate, a lifting appliance pull rod, a lifting claw mounting shaft, a clamping head, a limiting frame and a guide groove, wherein the clamping plate is arranged on the left chuck, the clamping head, the clamping plate, 5, the lifting appliance pull rod, 6, the lifting claw mounting shaft, the self-locking mechanism, 11, the clamping tongue, 12, the clamping claw mounting shaft, 13, the clamping jaw, and the clamping head fixing shaft, 15, the clamping head, 16, the clamping plate, and the clamping plate, and the clamping plate, the clamping head, the clamping plate, the clamping groove;

10-1 parts of base, 10-2 parts of rotating shaft sleeve, 10-3 parts of sliding pin, 10-4 parts of moving sleeve, 10-5 parts of rotating shaft, 10-6 parts of guide sleeve, 10-7 parts of guide column, 10-8 parts of retainer ring, 10-9 parts of spring.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1-11, the utility model relates to a preferred embodiment an unpowered self-locking type hoist, including left chuck 1 and the right chuck 2 of bilateral symmetry installation, the both sides of left chuck 1 and right chuck 2 all have installation axle 3, install in the mounting hole on the splint 4 of the left and right sides axle 3 movable mounting, there is hoist pull rod 5 left chuck 1 and right chuck 2's tail end through axle movable mounting, hoist pull rod 5 meet position movable mounting have hanging shaft 6, install lug 7 on the hanging shaft 6, the lower extreme of lug 7 is the dead slot form, there is draw-in groove 8 on its terminal surface, there is cross bracing board 9 lug 7's below, install self-locking mechanism 10 on the cross bracing board 9, spring bolt 11 of self-locking mechanism 10 stretches into in the draw-in groove 8.

When the unpowered self-locking lifting appliance is used, under an initial state, the lock tongue 11 extends into the clamping groove of the lifting lug 7, at the moment, the locking state is achieved, the left chuck 1 and the right chuck 2 are in an open state, the lifting appliance is lifted to be close to a lifted workpiece, then the lifting appliance moves downwards, the left chuck 1 and the right chuck 2 are located on two sides of the workpiece, when the cross support plate 9 contacts the upper edge of the workpiece, the self weight of the whole lifting appliance presses the self-locking mechanism 10 to unlock the self-locking mechanism 10, the lock tongue 11 slides out of the clamping groove 8 of the lifting lug 7, the left chuck 1 and the right chuck 2 clamp the side wall of the workpiece under the influence of the self weight, the lifting lug 7 is driven to move upwards by the lifting appliance, the left chuck 1 and the right chuck 2 which are arranged on the shift 4 drive the left chuck 1 and the right chuck 2 to clamp inwards under the action of the mounting shaft 3 and the lifting appliance pull rod 5, and the lifting purpose is achieved;

after the lifting is finished, the lifting appliance moves downwards, the cross supporting plate 9 is made to contact with the upper edge of the workpiece again, the self-locking mechanism 10 is penalized again, the bolt 11 extends into the clamping groove 8 of the lifting lug 7 and rotates 90 degrees, the bolt 11 is locked in the clamping groove 9, the locking operation of the lifting appliance can be completed, and the left chuck 1 and the right chuck 2 are limited to be in an open state.

Further, the self-locking mechanism 10 comprises a base 10-1 fixed on the cross support plate 9 through bolts, a rotating shaft sleeve 10-2 is fixed on the base 10-1 through bolts, a sliding pin 10-3 is installed on the side portion of the rotating shaft sleeve 10-2 through bolts, the front end of the sliding pin 10-3 extends inwards, the end portion of the sliding pin is located between a moving sleeve 10-4 and a guide sleeve 10-6, the moving sleeve 10-4 extends into the rotating shaft sleeve 10-2, an integrally formed rotating shaft 10-5 is arranged in the moving sleeve 10-4, the top end of the rotating shaft 10-5 is a long strip-shaped bolt 11, the lower end of the rotating shaft 10-5 is provided with the guide sleeve 10-6, the lower end of the moving sleeve 10-4 and the upper end of the guide sleeve 10-6 are provided with staggered arc-shaped guide strips, the four guide strips are respectively arranged on the circumference of the guide sleeve 10-6 of the moving sleeve 10-4, the upper end of the movable sleeve 10-4 is provided with a retainer ring 10-8 contacted with the bottom end of the lifting lug 7.

The self-locking mechanism 10 comprises a moving sleeve 10-4, a guide sleeve 10-6 and a rotating shaft 10-5 which are integrally formed, a retainer ring 10-8 is arranged on the upper edge of the rotating shaft 10-5, in the downward moving process of the lifting appliance, after a cross support plate 9 at the bottom contacts the surface of a workpiece, the upper part of the lifting appliance presses the retainer ring 10-8 under the pressure of self weight to drive the whole moving sleeve 10-4, the guide sleeve 10-6 and the rotating shaft 10-5 to move downward, a sliding pin 10-3 is fixed on a rotating shaft sleeve 10-2 through a bolt, and the front end of the sliding pin 10-3 is positioned in a guide groove between the moving sleeve 10-4 and the guide sleeve 10-6;

when in an initial locking state, the lock tongue 11 extends into the clamping groove 8, the lock tongue 11 and the clamping groove 8 are in a cross shape, the lowest groove part of the guide strip on the guide sleeve 10-6 at the lower end is contacted with the sliding pin 10-3, the cross support plate 9 is forced upwards by the lower end when the whole lifting appliance moves downwards, so that the lifting lug 7 presses the check ring 10-8 under the influence of self weight, the movable sleeve 10-4 at the upper end moves downwards to be contacted with the front end of the sliding pin 10-3, the whole movable sleeve 10-4, the guide sleeve 10-6 and the rotating shaft 10-5 rotate for 90 degrees by utilizing the matching use of the guide strip at the lower end of the movable sleeve 10-5 and the sliding pin 10-3, the lock tongue 11 and the clamping groove 8 are in a parallel state, the lock tongue 11 can be separated from the clamping groove 8, the unlocking is completed, and the left chuck 1 and the right chuck 2 clamp a workpiece under the action of self weight, when the lifting lug 7 is pulled up by a lifting carrier, the left chuck 1 and the right chuck 2 are driven to clamp inwards by pulling the lifting shaft 6 connected with the lifting lug 7 and the lifting appliance pull rod 5, the cross support plate 9 is still positioned at the upper part of a workpiece at the moment and provides supporting force by engineering, and the guide sleeve 10-6 at the lower end is reset by a reset mechanism to be in contact with the sliding pin 10-3;

after the hoisting is completed, the hoisting tool continues to move downwards, so that the cross supporting plate 9 drives the self-locking mechanism 10 to move upwards, the lock tongue 11 is stretched into the clamping groove 8 again, the hoisting tool continues to move downwards under the influence of the dead weight, the lower end of the lifting lug 7 is contacted with the retaining ring 10-8 again, the operation is repeated at the moment, the lock tongue 11 is driven to rotate 90 degrees again, the rotated lock tongue 11 and the clamping groove 8 are in a cross shape again, the locking operation is completed at the moment, and the left chuck 1 and the right chuck 2 are contacted with the lower edge of the clamping plate 4 through the cross supporting plate 9 at the lower end, so that the left chuck 1 and the right chuck 2 can be kept in an open state and can be separated.

Furthermore, vertical guide columns 10-7 are arranged on the base 10-1 on two sides of the rotating shaft sleeve 10-2, and the guide columns 10-7 are positioned on two sides of the lifting lug 7.

The guide posts 10-7 on the two sides of the base 10-1 are clamped on the outer sides of the lifting lugs 7 to play a role in guiding, the whole self-locking mechanism 10 guides when moving up and down, and slopes are arranged on the inner sides of the top ends of the guide posts 10-7 to facilitate guiding and sliding.

Further, the tail end of the rotating shaft 10-5 is movably installed in the base 10-1 through a bearing.

The rotating part of the whole self-locking mechanism can rotate conveniently through the rotating shaft 10-5 movably arranged by the bearing, and finally the lock tongue 11 can rotate conveniently to realize locking or unlocking operation.

Further, a spring 10-9 is arranged between the bottom of the guide sleeve 10-6 and the base 10-1.

When the spring 10-9 is used as a reset mechanism, the spring 10-9 provides the whole integrated movable sleeve 10-4, the guide sleeve 10-6 and the rotating shaft 10-5 for upward reset when the whole needs to be pushed upwards and reset in the operation steps.

Furthermore, a guide groove 17 is arranged above the clamping plate 4, and the outer protruding end of the hanging shaft 6 is clamped in the guide groove 17.

The guide groove 17 is used in cooperation with the outer side of the hanging shaft 6, so that the hanging shaft 6 is guided by the guide groove 17 when moving downwards, the hanging shaft 6 is conveniently embedded into a clamping position, and meanwhile, the upper end of the guide groove 17 is open, so that the guiding effect is better.

Furthermore, the tail ends of the left chuck 1 and the right chuck 2 are provided with a hanging claw mounting shaft 12, the hanging claws 13 are mounted on the hanging claw mounting shaft 12, two groups of convex chuck fixing shafts 14 are arranged above and below the hanging claws 13, and the chucks 15 are mounted on the chuck fixing shafts 14.

The lifting claws 13 and the clamping heads 15 on the left clamping head 1 and the right clamping head 2 are of movable structures, so that the contact performance with the side walls of the hoisted workpiece is better, and meanwhile, the inner side walls of the clamping heads 15 are subjected to anti-skidding treatment, so that the friction force between the clamping heads 15 and the side walls of the workpiece is increased, and the hoisting is facilitated.

Further, a limiting frame 16 is welded on the outer side of the clamping plate 4.

The limiting frame 16 is positioned on the outer side of the clamping plate 4, so that the upward turning angle of the left clamping head 1 and the right clamping head 2 is limited, and the purpose of auxiliary positioning is achieved.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides an unpowered self-locking type hoist, left chuck (1) and right chuck (2) including bilateral symmetry installation, the both sides of left chuck (1) and right chuck (2) all have installation axle (3), installation axle (3) movable mounting is in the mounting hole on splint (4) of the left and right sides, the tail end of left chuck (1) and right chuck (2) has hoist pull rod (5) through an axle movable mounting, the position movable mounting that meets of hoist pull rod (5) has hanging shaft (6), install lug (7) on hanging shaft (6), its characterized in that: the lower end of the lifting lug (7) is in a hollow groove shape, a clamping groove (8) is formed in the end face of the lifting lug, a cross supporting plate (9) is arranged below the lifting lug (7), a self-locking mechanism (10) is installed on the cross supporting plate (9), and a lock tongue (11) of the self-locking mechanism (10) extends into the clamping groove (8).

2. The unpowered self-locking type lifting appliance according to claim 1, wherein: the self-locking mechanism (10) comprises a base (10-1) fixed on a cross support plate (9) through bolts, a rotating shaft sleeve (10-2) is fixed on the base (10-1) through bolts, a sliding pin (10-3) is installed on the side portion of the rotating shaft sleeve (10-2) through bolts, the front end of the sliding pin (10-3) extends inwards, the end portion of the sliding pin is located between a moving sleeve (10-4) and a guide sleeve (10-6), the moving sleeve (10-4) extends into the rotating shaft sleeve (10-2), an integrally formed rotating shaft (10-5) is arranged in the moving sleeve (10-4), the top end of the rotating shaft (10-5) is a long-strip-shaped lock tongue (11), the lower end of the rotating shaft (10-5) is provided with the guide sleeve (10-6), and staggered arc-shaped guide strips are arranged at the lower end of the moving sleeve (10-4) and the upper end of the guide sleeve (10-6), the four guide strips are respectively arranged on the circumference of the guide sleeve (10-6) of the movable sleeve (10-4), and the upper end of the movable sleeve (10-4) is provided with a retaining ring (10-8) which is contacted with the bottom end of the lifting lug (7).

3. The unpowered self-locking type lifting appliance according to claim 2, wherein: vertical guide columns (10-7) are arranged on the base (10-1) on two sides of the rotating shaft sleeve (10-2), and the guide columns (10-7) are positioned on two sides of the lifting lug (7).

4. The unpowered self-locking type lifting appliance according to claim 2, wherein: the tail end of the rotating shaft (10-5) is movably arranged in the base (10-1) through a bearing.

5. The unpowered self-locking type lifting appliance according to claim 2, wherein: a spring (10-9) is arranged between the bottom of the guide sleeve (10-6) and the base (10-1).

6. The unpowered self-locking type lifting appliance according to claim 1, wherein: a guide groove (17) is arranged above the clamping plate (4), and the convex end at the outer side of the hanging shaft (6) is clamped in the guide groove (17).

7. The unpowered self-locking type lifting appliance according to claim 1, wherein: the tail ends of the left chuck (1) and the right chuck (2) are provided with a hanging claw mounting shaft (12), the hanging claws (13) are mounted on the hanging claw mounting shaft (12), two groups of convex chuck fixing shafts (14) are arranged above and below the hanging claws (13), and the chucks (15) are mounted on the chuck fixing shafts (14).

8. The unpowered self-locking type lifting appliance according to claim 1, wherein: the outer side of the clamping plate (4) is welded with a limiting frame (16).

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