CN213445749U

CN213445749U - Crane lifting lug

Info

Publication number: CN213445749U
Application number: CN202022093675.9U
Authority: CN
Inventors: 李春光
Original assignee: Zhangjiagang Hongsheng Mechanical Engineering Technology Co ltd
Current assignee: Zhangjiagang Hongsheng Mechanical Engineering Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-15
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a hoist lug, including connecting seat, hanging beam and main shaft, the bottom of connecting seat is equipped with the fixed plate, the fixed plate passes through coupling assembling and connecting seat fixed connection, the bottom fixedly connected with dead axle of fixed plate, the lower part threaded connection of dead axle has the bearing board, the cover is equipped with lock nut on the dead axle, lock nut's up end supports and leans on the lower terminal surface in the bearing board, a plurality of raceways have evenly been seted up around the dead axle to the up end of bearing board, every all roll in the raceway and be equipped with the steel ball, the upper portion of hanging beam runs through and is equipped with the through-hole, the dead axle passes the through-hole. The utility model discloses make things convenient for the hanging beam wholly can slide in the upper end of bearing board to the lug can realize the free rotation around the dead axle, can play fine limiting displacement to the main shaft simultaneously, prevents that the main shaft from taking place to drop with the hanging beam after long-term the use, has improved the security performance and the practicality of lug.

Description

Crane lifting lug

Technical Field

The utility model relates to a hoist field, concretely relates to hoist lug.

Background

The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, and is also called a crown block, a navigation crane and a crane. The tire crane is mainly characterized in that: the traveling cab and the crane control cab are integrated and are formed by the evolution of a crawler crane (crawler crane), the crawler and the traveling support part of the traveling mechanism are changed into a chassis with tires, the defect that a crawler plate of the crawler crane (crawler crane) damages the road surface is overcome, and the material handling machine belongs to material handling machinery; the bridge crane is a hoisting device which is transversely erected above workshops, warehouses and material yards for hoisting materials, because the two ends of the bridge crane are located on high cement columns or metal supports and are shaped like a bridge, the bridge frame of the bridge crane longitudinally runs along rails laid on the elevated frames on the two sides, the space below the bridge frame can be fully utilized for hoisting the materials, the bridge crane is not hindered by ground equipment, and the bridge crane is a hoisting machine with the widest application range and the largest quantity.

The lifting lug is needed to be used in the working process of the existing crane, the lifting lug used at present is generally made of a whole piece of iron and a lifting lug ring through welding, although the lifting lug is convenient to manufacture, in use, because the lifting lug can not rotate freely, when a heavy object is lifted, if the heavy object generates lateral force on the lifting lug, the lifting lug is easy to break, and after the lifting lug is used for a long time, a main shaft is easy to fall off from a hanging beam, so that production accidents are easy to cause, and the production safety is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcoming of prior art, the utility model aims to provide a hoist lug for lug can not the free rotation among the solution prior art, and the problem that drops takes place with the hanging beam easily after long-term the use simultaneously for a long time.

In order to achieve the above and other related objects, the present invention provides a crane lifting lug, including a connecting seat, a lifting beam and a main shaft, wherein the bottom of the connecting seat is provided with a fixing plate, the fixing plate is fixedly connected with the connecting seat through a connecting component, the bottom of the fixing plate is fixedly connected with a fixed shaft, the lower portion of the fixed shaft is in threaded connection with a bearing plate, the fixed shaft is sleeved with a locking nut, the upper end surface of the locking nut is abutted against the lower end surface of the bearing plate, the upper end surface of the bearing plate is uniformly provided with a plurality of rolling grooves around the fixed shaft, steel balls are rolled in each rolling groove, the upper portion of the lifting beam is provided with a through hole in a penetrating manner, the fixed shaft passes through the through hole, the upper portion of the lifting beam is positioned above the bearing plate, the lower surface of the upper portion of the lifting beam is pressed against the upper, the both ends of main shaft pass and stretch out the hanging beam outside from the logical inslot that corresponds respectively, the one end an organic whole of main shaft is connected with first limiting plate, and its other end passes through bolt and second limiting plate fixed connection, spacing subassembly is all installed to the upper end and the lower extreme of main shaft, just spacing subassembly is located the one side that is close to first limiting plate on the main shaft.

Preferably, coupling assembling includes stay bolt, gasket and fixation nut, the vertical fixed plate and the fixing base of running through of stay bolt, threaded connection has fixation nut on the stay bolt, fixation nut presses in the fixed plate bottom, the gasket is located between fixation nut and the fixed plate.

Preferably, the upper part of the dead axle is fixedly sleeved with a baffle, and the upper part of the hanging beam is positioned between the baffle and the supporting plate.

Preferably, the width of the notch of the rolling groove is smaller than the diameter of the steel ball.

Preferably, the limiting assembly comprises a limiting block, movable grooves are formed in the upper end and the lower end of the main shaft, the limiting block is arranged in the corresponding movable grooves, a pressing plate is fixedly connected to the bottom of the limiting block, sliding grooves are formed in the groove walls of the two sides of each movable groove, the two ends of the pressing plate are connected with the sliding grooves in a sliding mode through sliding blocks, a bottom plate is fixedly connected to the bottom of each movable groove, and the pressing plate is connected with the bottom plate through springs.

Preferably, one side of the limiting block, which is far away from the first limiting plate, is an inclined plane.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) by arranging the fixed shaft, the bearing plate, the locking nut and the steel balls, when the lifting device is used, the lifting lug lifts a heavy object, the lower surface of the upper part of the lifting beam is in contact with the upper surface of the steel balls, the steel balls can freely rotate in the rolling groove, the whole lifting beam can conveniently slide at the upper end of the bearing plate, so that the lifting lug can freely rotate around the fixed shaft, meanwhile, the locking nut plays a role in limiting and fixing the bearing plate, stress points at the bottom of the bearing plate are increased and dispersed, the bearing plate can provide a stable and powerful bearing effect, the stability of the bearing plate in bearing load is improved, meanwhile, the baffle is arranged, the lifting beam is axially limited, and the stable rotation of the lifting beam is ensured;

(2) through setting up first limiting plate, second limiting plate and spacing subassembly, can play fine limiting displacement to the main shaft, prevent that the main shaft from taking place to drop with the hanging beam after long-term the use, avoided the emergence of incident, improved the security performance and the practicality of lug.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

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

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

FIG. 3 is a top view of the support plate of the present invention;

fig. 4 is a schematic cross-sectional view of the spindle of the present invention.

Wherein the reference numerals are specified as follows: the connecting seat 1, the hanging beam 2, the main shaft 3, the fixing plate 4, the connecting assembly 5, the long bolt 51, the gasket 52, the fixing nut 53, the fixed shaft 6, the supporting plate 7, the locking nut 8, the through hole 9, the through groove 10, the first limiting plate 11, the second limiting plate 12, the limiting assembly 13, the limiting block 131, the movable groove 132, the pressing plate 133, the sliding groove 134, the sliding block 135, the bottom plate 136, the spring 137, the baffle 14, the rolling groove 15 and the steel ball 16.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1, 2 and 3, the utility model provides a crane lifting lug, which comprises a connecting seat 1, a lifting beam 2 and a main shaft 3, wherein a fixed plate 4 is arranged at the bottom of the connecting seat 1, the fixed plate 4 is fixedly connected with the connecting seat 1 through a connecting component 5, a fixed shaft 6 is fixedly connected with the bottom of the fixed plate 4, a bearing plate 7 is in threaded connection with the lower part of the fixed shaft 6, a locking nut 8 is sleeved on the fixed shaft 6, the upper end surface of the locking nut 8 is abutted against the lower end surface of the bearing plate 7, a plurality of rolling grooves 15 are uniformly arranged on the upper end surface of the bearing plate 7 around the fixed shaft 6, steel balls 16 are arranged in each rolling groove 15 in a rolling manner, a through hole 9 is arranged at the upper part of the lifting beam 2 in a penetrating manner, the fixed shaft 6 passes through the through hole 9, the upper part of the lifting beam 2 is positioned above the bearing plate 7, and the lower surface of the upper, lead to groove 10 has all been seted up to the both sides of 2 lower parts of hanging beam, the both ends of main shaft 3 pass and stretch out the 2 outsides of hanging beam from the logical inslot 10 that corresponds respectively, the one end an organic whole of main shaft 3 is connected with first limiting plate 11, and its other end passes through bolt and second limiting plate 12 fixed connection, spacing subassembly 13 is all installed to the upper end and the lower extreme of main shaft 3, just spacing subassembly 13 is located one side that is close to first limiting plate 11 on the main shaft 3.

In this embodiment, the connecting assembly 5 includes a long bolt 51, a gasket 52 and a fixing nut 53, the long bolt 51 vertically penetrates through the fixing plate 4 and the fixing seat, the fixing nut 53 is connected to the long bolt 51 through a thread, the fixing nut 53 is pressed against the bottom of the fixing plate 4, and the gasket 52 is disposed between the fixing nut 53 and the fixing plate 4.

In this embodiment, the upper portion of the fixed shaft 6 is fixedly sleeved with a baffle 14, and the upper portion of the hanging beam 2 is located between the baffle 14 and the supporting plate 7, so that the hanging beam 2 can be axially limited.

In this embodiment, the width of the notch of the rolling groove 15 is smaller than the diameter of the steel ball 16, so as to ensure that the steel ball 16 cannot be separated from the rolling groove 15. In actual use, lubricating oil is poured into the rolling groove 15, so that the steel ball 16 can rotate freely in the rolling groove 15.

In this embodiment, as shown in fig. 4, the limiting component 13 includes a limiting block 131, a movable groove 132 is provided at the upper end and the lower end of the main shaft 3, the limiting block 131 is disposed in the corresponding movable groove 132, a pressing plate 133 is fixedly connected to the bottom of the limiting block 131, sliding grooves 134 are provided on the groove walls on both sides of the movable groove 132, both ends of the pressing plate 133 are slidably connected to the sliding grooves 134 through a slider 135, a bottom plate 136 is fixedly connected to the bottom of the movable groove 132, and the pressing plate 133 is connected to the bottom plate 136 through a spring 137.

Further, one side of the limiting block 131 away from the first limiting plate 11 is an inclined plane.

The working principle is as follows:

first, the one end of keeping away from first limiting plate 11 with main shaft 3 passes logical groove 10 of hanging beam 2 below both sides, the in-process of passing, because the inclined plane of stopper 131 receives the extrusion, make stopper 131 return to in the activity groove 132, return the in-process, slider 135 makes rectilinear movement along spout 134, clamp plate 133 extrudees spring 137 simultaneously, when spacing subassembly 13 passes logical groove 10, stopper 131 receives the elastic force and stretches out from activity groove 132, then through the bolt with the tip fixed connection of second limiting plate 12 with main shaft 3, first limiting plate 11, second limiting plate 12 and spacing subassembly 13 can play fine limiting displacement to main shaft 3, prevent that main shaft 3 from taking place to drop with hanging beam 2 after long-term the use.

The lug drags the heavy object, the lower surface on 2 upper portions of hanging beam and the upper surface contact of steel ball 16 this moment, steel ball 16 can be at the interior free rotation of slot rolling 15, make things convenient for hanging beam 2 whole can slide in the upper end of bearing board 7, thereby the lug can realize the free rotation around dead axle 6, lock nut 8 has played spacing fixed effect to bearing board 7 simultaneously, increase and dispersed the stress point of bearing board 7 bottom, make bearing board 7 can provide steady powerful supporting effect, stability when having improved its bearing load, set up baffle 14 simultaneously, it is spacing to carry out the axial to hanging beam 2, the steady rotation of hanging beam 2 has been guaranteed, prevent that the lug from splitting.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A lifting lug of a crane is characterized by comprising a connecting seat, a lifting beam and a main shaft, wherein a fixing plate is arranged at the bottom of the connecting seat and fixedly connected with the connecting seat through a connecting assembly, a fixed shaft is fixedly connected with the bottom of the fixing plate, a bearing plate is in threaded connection with the lower portion of the fixed shaft, a locking nut is sleeved on the fixed shaft, the upper end face of the locking nut is abutted against the lower end face of the bearing plate, a plurality of rolling grooves are uniformly formed in the upper end face of the bearing plate around the fixed shaft, steel balls are arranged in each rolling groove in a rolling manner, a through hole is formed in the upper portion of the lifting beam in a penetrating manner, the fixed shaft penetrates through the through hole, the upper portion of the lifting beam is positioned above the bearing plate, the lower surface of the upper portion of the lifting beam is pressed against the upper surface of each steel ball, through grooves are formed in two sides of the lower portion of the lifting beam, the one end an organic whole of main shaft is connected with first limiting plate, and its other end passes through bolt and second limiting plate fixed connection, spacing subassembly is all installed to the upper end and the lower extreme of main shaft, just spacing subassembly is located one side that is close to first limiting plate on the main shaft.

2. A crane lug according to claim 1, characterised in that: coupling assembling includes stay bolt, gasket and fixation nut, the vertical fixed plate and the fixing base of running through of stay bolt, threaded connection has fixation nut on the stay bolt, fixation nut presses in the fixed plate bottom, the gasket is located between fixation nut and the fixed plate.

3. A crane lug according to claim 1, characterised in that: the upper part of the dead axle is fixedly sleeved with a baffle, and the upper part of the hanging beam is positioned between the baffle and the bearing plate.

4. A crane lug according to claim 1, characterised in that: the width of the notch of the rolling groove is smaller than the diameter of the steel ball.

5. A crane lug according to claim 1, characterised in that: the limiting assembly comprises a limiting block, movable grooves are formed in the upper end and the lower end of the main shaft, the limiting block is arranged in the corresponding movable grooves, a pressing plate is fixedly connected to the bottom of the limiting block, sliding grooves are formed in the groove walls of the two sides of each movable groove, the two ends of the pressing plate are connected with the sliding grooves in a sliding mode through sliding blocks, a bottom plate is fixedly connected to the bottom of each movable groove, and the pressing plate is connected with the bottom plate through springs.

6. A crane lug according to claim 5 wherein: one side of the limiting block, which is far away from the first limiting plate, is an inclined plane.