CN220010995U - Chain hoist - Google Patents

Abstract

The utility model discloses a chain hoist which comprises a support, wherein a rail is arranged on the support, a cargo carrying trolley is movably arranged on the rail along the rail, the cargo carrying trolley is connected with a chain lifting mechanism which drives the cargo carrying trolley to move along the rail through a connecting piece, the connecting piece comprises a first connecting part and a second connecting part, the first connecting part is fixed on the inner side of the cargo carrying trolley, the second connecting part is connected with a chain of the chain lifting mechanism, and the second connecting part is pivoted with the first connecting part and has relative linear movement. The connecting piece has the advantages that the structure of the connecting piece enables the movement of the cargo trolley in a turning area to be smoother, meanwhile, in the process that the cargo trolley moves downwards from the arc-shaped section to the straight rail section, the connecting piece can continuously provide support for the cargo trolley, and the problems that the cargo trolley suddenly drops under the action of gravity to bring a large load to a chain when moving downwards, and the stability and the service life of a chain type lifting mechanism are affected are avoided.

Description

Chain hoist

Technical Field

The utility model relates to the field of automation equipment, in particular to a chain hoist.

Background

Chain lifts are important equipment for carrying out load transfer.

For example, in the lifting skip machine disclosed in the chinese patent publication No. CN215013079U, turning direction of the chain is realized by a steering roller, and the position design of the steering roller causes a certain deformation space to be required for a fixed block connecting the skip box and the driving chain belt so that the skip box can smoothly move at the turning position, and the specific structure of the fixed block is not clearly shown in the above prior patent.

In the prior art, the connection of the tipping box and the transmission chain belt is realized by adopting a chain link with certain flexibility and the like, but the structure ensures that the tipping box has larger shaking when moving at a turning position and poor moving smoothness, and particularly when the tipping box moves downwards from the turning position to a straight rail section, the chain link can not effectively support the tipping box, so that the tipping box can obviously fall under the action of gravity, the vibration is large, and the transmission chain belt is greatly loaded, thereby influencing the service life of the transmission chain belt.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a chain hoist.

The aim of the utility model is achieved by the following technical scheme:

the chain hoist comprises a support, set up the track on the support, but be provided with the dolly that carries cargo on the track along its removal, carry cargo the dolly and pass through connecting piece connection drive its edge the chain hoist mechanism of track removal, the connecting piece includes first connecting portion and second connecting portion, first connecting portion fix carry the inboard of dolly, the second connecting portion connect chain hoist mechanism's chain, the second connecting portion with first connecting portion pin joint and have relative rectilinear movement between the two.

Preferably, the track comprises a straight track section and an arc-shaped section connected to the upper end of the straight track section, and the straight track section is obliquely arranged on the support.

Preferably, the inclination angle of the straight rail section is between 30 degrees and 75 degrees.

Preferably, the first connecting portion comprises two side plates which are arranged in a clearance and perpendicular to the axes of the rollers of the cargo trolley, two waist-shaped holes or waist-shaped grooves are formed in the two side plates, the extending direction of the waist-shaped holes or the waist-shaped grooves is perpendicular or approximately perpendicular to the extending direction of a first connecting line connecting the axes of a pair of rollers on the same side of the cargo trolley, a baffle is arranged between the two side plates, and when the cargo trolley is at the lowest position, the baffle is perpendicular or approximately perpendicular to the linear moving direction of the cargo trolley.

Preferably, the second connecting portion includes a main body, two opposite sides of the main body are coaxially provided with two rotating shafts perpendicular to the side plates, the two rotating shafts are respectively connected in the waist-shaped holes or waist-shaped grooves on one side plate, when the cargo truck is located on the straight rail section, the rotating shafts are located at one end, close to the chain, of the waist-shaped holes or waist-shaped grooves, and part of the top of the main body is located below the baffle and abuts against the baffle.

Preferably, the number of the connecting pieces is two and the connecting pieces are fixed on wheel seats on the inner side of the cargo trolley, two pairs of rollers are arranged on the wheel seats, and each pair of rollers are arranged in a track in a rolling way.

Preferably, the chain lifting mechanism comprises a motor, the motor is connected with a double-end driving machine, two horizontally extending output heads of the double-end driving machine are respectively connected with a lower chain wheel, the lower chain wheel is connected with a steering chain wheel and an upper driving wheel through a chain, the steering chain wheel is positioned above a straight rail section of the track and below an arc-shaped section of the track, and a second connecting line which is vertically connected with the axis of the steering chain wheel and the axis of the lower chain wheel is parallel to the straight rail section; the upper driving wheel is positioned above the steering chain wheel and below the arc-shaped section, and the upper driving wheel and the lower chain wheel are positioned on two sides of the steering chain wheel.

Preferably, each chain is further connected to a tensioning wheel located on the outer side of the chain, and the tensioning wheel is located between the upper driving wheel and the steering sprocket.

Preferably, a downstream section between the tension pulley and the lower sprocket is parallel or substantially parallel to an upstream section between the lower sprocket and the steering sprocket.

Preferably, the loading trolley comprises a first bearing part and a second bearing part which form an obtuse angle, the bearing surface of the first bearing part is parallel or approximately parallel to the horizontal plane, one side of the second bearing part facing the track is connected with the connecting piece, one side of the second bearing part facing away from the track is provided with a blanking plane, and when the loading trolley moves to the upper end of the track, the outer side of the blanking plane is lower than the inner side.

The technical scheme of the utility model has the advantages that:

the connecting piece has the advantages that the movement of the cargo trolley in the turning area is smoother due to the structure of the connecting piece, meanwhile, in the process that the cargo trolley moves downwards from the arc-shaped section to the straight rail section, the second connecting part and the first connecting part can continuously support the cargo trolley, and the problems that the chain is greatly loaded due to sudden falling under the action of gravity when the cargo trolley moves downwards, and the stability and the service life of the chain type lifting mechanism are affected are avoided.

The first connecting part and the second connecting part have simple structure, easy processing and realization and good stability.

The structure of the cargo trolley can conveniently carry out manual feeding, can stably and reliably realize unloading of materials, and is simple in structure and easy to assemble and realize.

According to the utility model, the tension adjustment of the chain can be conveniently carried out by arranging the tension wheel at the position, and meanwhile, the chain can be stably driven, so that the reliability is better.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is a partial cutaway perspective view of the present utility model;

fig. 3 is an enlarged view of region a in fig. 2;

fig. 4 is a partial cross-sectional view of the chain hoist of the present utility model and a cargo vehicle.

Detailed Description

The objects, advantages and features of the present utility model are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the utility model, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the utility model.

In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The chain hoist disclosed in the utility model is described below with reference to the accompanying drawings, and as shown in fig. 1, the chain hoist comprises a support 100, a rail 200 is arranged on the support 100, a trolley 300 is movably arranged on the rail 200 along the rail, and the trolley 300 is connected with a chain hoist mechanism 500 driving the trolley to move along the rail 200 through a connecting piece 400.

As shown in fig. 1, the specific structure of the stand 100 may be designed according to need, and in this embodiment, the stand 100 includes a horizontally disposed bottom frame 110, and a universal wheel 120 may be disposed at the bottom of the bottom frame 110 for movement. Of course, the support 100 may be a known walking structure with a power source. The first inclined frame 130 and the second inclined frame 140 are arranged above the support 100, the first inclined frame 130, the second inclined frame 140 and the bottom frame 110 are distributed in a triangle, an included angle a between the second inclined frame 140 and the bottom frame 110 can be designed according to the requirement, and preferably, the included angle a is between 30 degrees and 75 degrees.

As shown in fig. 1, the second tilting frame 140 extends above the first tilting frame 130 and the rails 200 are disposed on the second tilting frame, and the rails 200 are U-shaped rails and two rails, and their notches are opposite and disposed on the support 150 on the second tilting frame 140. The overall shape of each rail 200 is approximately a "J" shape, which includes a straight rail section 210 and an arcuate section 220 joined to the upper end of the straight rail section 210. The straight rail section 210 may be disposed on the support in a vertical state. Preferably, the straight rail section 210 is disposed on the rail 200 in a predetermined angle, and more preferably, the inclination angle of the straight rail section 210 is the same as the inclination angle of the second inclined frame 140, that is, the inclination angle of the straight rail section 210 is 30 ° to 75 ° consistent with the included angle a. The arc-shaped section 220 is about 1/4 of a circular arc with a predetermined diameter, and the specific dimensions of the arc-shaped section 220 are designed according to needs, and will not be described herein.

The loading trolley 300 is used for placing objects and pouring the objects on the loading trolley 300 when the loading trolley 300 is lifted to the upper end of the track 200, the loading trolley 300 is arranged on the two tracks 200 in a rolling way, and the specific structure of the loading trolley 300 can be designed according to different requirements, for example, the loading trolley can be a material hopper or a material bucket or a material basket with rollers 340 matched with the track 200.

As shown in fig. 1 and fig. 2, in this embodiment, the truck 300 includes a first bearing portion 310 and a second bearing portion 320 that form an obtuse angle, a bearing surface of the first bearing portion 310 is parallel or substantially parallel to a horizontal plane, a bearing surface of the first bearing portion 310 is parallel or substantially parallel to the horizontal plane, a side of the second bearing portion 320 facing the rail 200 is connected to the connecting piece 400, a side of the second bearing portion facing away from the rail 200 has a feeding plane, and when the truck 300 moves to an upper end of the rail 200, an outer side of the feeding plane is lower than an inner side.

As shown in fig. 2, the first carrying part 310 includes a first rod 311 and a second rod 312 perpendicular to each other, which are combined into a lattice-shaped frame structure, the second carrying part 320 includes a set of third rods and a fourth rod 322 disposed on a pallet 321, the third rods are vertically connected to the fourth rod 322 at their upper ends, the lower ends of the third rods are respectively connected to the inner ends of the second rods 312, and the pallet 321 includes a bending plate 323 horizontally extending below the second rods 312.

As shown in fig. 2, the bending plate 323 is further provided with a discharging plate 324, the discharging plate 324 includes a first flat plate portion 325 and a second flat plate portion 326 bent at an acute angle, the first flat plate portion 325 is disposed at the bending plate 323, the second flat plate portion 326 is obliquely disposed on the fourth rod member 322, a joining portion 327 of the first flat plate portion 325 and the second flat plate portion 326 is located at an outer side of the bending plate 323, a surface of the second flat plate portion 326 facing away from the track is the blanking plane, an included angle b between the blanking plane and a bearing surface of the first bearing portion 310 is between 110 ° and 125 °, and more preferably about 115 °, and the second rod member 312 passes through the joining portion 327 of the first flat plate portion 325 and the second flat plate portion 326.

Such a structure makes the bearing surface of the first bearing portion 310 close to the ground when the cargo cart 300 is at the lowest position, thereby facilitating the placement of the cargo on the bearing surface of the first bearing portion 310 and reducing the difficulty of operation. When the truck 300 is lifted to the upper end of the track 200, the material on the first carrying portion 310 can move onto the second plate portion 326, at this time, the second plate portion 326 is in a state that the outer side is low and the inner side (the side of the second plate portion 326 near the first carrying portion 310) is high, so that the material can slide down from the truck 300 more smoothly under the action of inertia and gravity, thereby ensuring stable unloading, and meanwhile, the condition of jamming can be effectively avoided by adopting the second plate portion 326.

Of course, in other embodiments, the cargo cart 300 may be formed by bending a plate, and after bending, the included angle between the two plates is consistent with the included angle between the loading surface of the first loading portion 310 and the blanking plane of the second loading portion 320.

As shown in fig. 2, a wheel seat 330 is disposed at a middle position of the side of the supporting plate 321 facing the track 200, and two pairs of rollers 340 are disposed on the wheel seat 330, and each pair of rollers 340 is disposed in a rolling manner in the track 200 at one side.

As shown in fig. 3, the connecting member 400 includes a first connecting portion 410 and a second connecting portion 420, the first connecting portion 410 is fixed on the wheel seat 330 at the inner side of the cargo truck 300 and located at the inner side of the roller 340, the second connecting portion 420 is connected to the chain 510 of the chain lifting mechanism 500, and the second connecting portion 420 is pivotally connected to the first connecting portion 410 and has relative linear movement therebetween.

As shown in fig. 3 and fig. 4, the first connecting portion 410 includes two parallel side plates 411 disposed in a gap, the side plates 411 are perpendicular to the axis of the rollers 340 of the trolley 300 and disposed in the U-shaped grooves of the wheel seat 330, the two side plates 411 are formed with opposite waist-shaped holes 412 or waist-shaped grooves, the extending direction of the waist-shaped holes 412 or waist-shaped grooves is perpendicular or substantially perpendicular to the extending direction of the first connecting line 350 connecting the axes of the pair of rollers on the same side of the trolley, the top of the two side plates 411 is provided with a baffle 413, of course, the baffle 413 may also be disposed between the two side plates 411, the length of the baffle 413 is smaller than the length of the side plates 411, and the first connecting line 350 is perpendicular or substantially perpendicular to the baffle.

As shown in fig. 3, the second connecting portion 420 includes a main body including at least two connecting plates 421 parallel to the side plates 411, preferably three connecting plates 421 connected to one link of the chain 510 of the chain lifting mechanism 500, and the connecting plates 421 are connected to each other to form a unit, for example, the top and bottom of each connecting plate are connected to the top plate 422 and the bottom plate 423, and at the same time, adjacent connecting plates 421 may be connected by coaxial connecting shafts. The two opposite sides of the main body are coaxially provided with rotating shafts 424, two rotating shafts 424 are perpendicular to the side plates and are respectively connected in the waist-shaped holes 412 or waist-shaped grooves on one side plate 411, so that the main body and the two side plates can rotate relatively, when the cargo truck is positioned on the straight rail section, the rotating shafts are positioned on the waist-shaped holes or the waist-shaped grooves and deflect towards one end of the chain, one side of the main body, which deflects towards the baffle plate, is partially positioned below the baffle plate 413 and is abutted against the baffle plate 413, and the part of the main body, which is positioned below the baffle plate, is only a short part of the main body. The connection plate 421 of the second connection part 420 is connected to one link of the chain 510 of the chain lifting mechanism 500. Of course, the main body may also have a cuboid block or a cuboid box.

As shown in fig. 4, the chain type lifting mechanism 500 is used to drive the cargo truck 300 to move up and down, which may be a known and feasible structure, for example, in one embodiment, the chain type lifting mechanism 500 may transmit power of a motor to the cargo truck 300 through only one chain 510 and a transmission mechanism formed by sprockets matched with the chain type lifting mechanism, and at this time, one chain 510 may be connected to an intermediate position of the cargo truck 300 to balance the driving force as much as possible.

As shown in fig. 4, in order to improve the stability and efficiency of driving, the chain lifting mechanism 500 includes a motor 520, the motor 520 is connected to a double-end driving machine 530, the double-end driving machine 530 is located on a double-end reduction gearbox or double-end reducer, the double-end driving machine is fixed on a mounting seat on the base and includes two horizontally extending output heads, the two horizontally extending output heads are respectively connected to a lower sprocket 540, the lower sprocket 540 is connected to a steering sprocket 550 and an upper driving wheel 560 through a chain 510, the steering sprocket 550 is located above a straight track section 210 of the track 200 and below an arc section 220 of the track 200, the distance between the steering sprocket 550 and the lower sprocket 540 and the straight track section 210 is the same, so that a second connecting line 590 which vertically connects the axis of the steering sprocket and the axis of the lower sprocket is parallel to the straight track section, the upper driving wheel 560 is located above the steering sprocket 550 and below the arc section 220 and is located on both sides of the lower sprocket 540, and the upper driving wheel 560 can be synchronously rotated to the straight track section 220 or the arc section 220. And, both the upper driving wheels 560 and the steering sprocket 550 are disposed on the mounting frame 160 on the stand 100, and the upper driving wheels 560 are disposed on the same supporting shaft of the mounting frame 160. The two chains 510 are respectively connected to the two connectors 400, and the two connectors 400 are symmetrically connected to both sides of the middle position of the cargo cart 300.

As shown in fig. 4, in order to conveniently adjust the tension of each chain 510, each chain 510 is further connected to a tension pulley 570 located at the outer side of the chain, the tension pulley 570 is located between the upper driving wheel 560 and the steering sprocket 550, two tension pulleys 570 are rotatably disposed on an adjusting shaft on the mounting frame 160, the adjusting shaft is disposed in an adjusting hole on the mounting frame 160 in a liftable manner and is disposed at the top of two adjusting mechanisms 580, the adjusting mechanisms 580 are disposed on the support 100, the adjusting mechanisms 580 may be an adjusting bolt screwed on the support 100 and extending along the height direction, and the upper end of the adjusting bolt is rotatably provided with a shaft seat relative to the adjusting bolt, and the adjusting shaft is fixed on the two shaft seats.

As shown in fig. 4, preferably, the lower strand 511 between the tension pulley 570 and the lower sprocket 540 is parallel or substantially parallel to the upper strand 512 between the lower sprocket 540 and the turning sprocket 550, so that the chain 510 can be better connected to the lower sprocket 540 and the upper driving pulley 560, thereby ensuring the stability of the chain rotation.

The support is also provided with a control cabinet, and the position of the control cabinet can be designed according to the needs, and in the embodiment, the control cabinet is arranged above the motor.

The utility model has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims (10)

1. The chain hoist comprises a support, set up the track on the support, but be provided with the dolly that carries cargo on the track along its removal, carry cargo the dolly and pass through the connecting piece and connect its edge of drive track removal's chain hoist mechanism, its characterized in that: the connecting piece comprises a first connecting part and a second connecting part, wherein the first connecting part is fixed on the inner side of the cargo carrying trolley, the second connecting part is connected with a chain of the chain type lifting mechanism, and the second connecting part is pivoted with the first connecting part and has relative linear movement.

2. The chain hoist of claim 1, characterized in that: the track comprises a straight track section and an arc-shaped section connected to the upper end of the straight track section, and the straight track section is obliquely arranged on the support.

3. The chain hoist of claim 2, characterized in that: the inclination angle of the straight rail section is between 30 and 75 degrees.

4. The chain hoist of claim 2, characterized in that: the first connecting portion comprises two side plates which are arranged in a clearance mode and perpendicular to the axes of the rollers of the cargo trolley, waist-shaped holes or waist-shaped grooves are formed in the two side plates, the positions of the waist-shaped holes or the waist-shaped grooves are opposite to each other, the extending direction of the waist-shaped holes or the waist-shaped grooves is perpendicular to or approximately perpendicular to the extending direction of a first connecting line connecting the axes of a pair of rollers on the same side of the cargo trolley, a baffle is arranged between the two side plates, and when the cargo trolley is at the lowest position, the baffle is perpendicular to or approximately perpendicular to the linear moving direction of the cargo trolley.

5. The chain hoist as in claim 4, characterized in that: the second connecting portion comprises a main body, two rotating shafts perpendicular to the side plates are coaxially arranged on two opposite sides of the main body, the two rotating shafts are respectively connected in the waist-shaped holes or waist-shaped grooves on one side plate, when the cargo truck is located on the straight rail section, the rotating shafts are located at one end, close to the chain, of the waist-shaped holes or the waist-shaped grooves, and part of the top of the main body is located below the baffle and abuts against the baffle.

6. The chain hoist of claim 1, characterized in that: the connecting pieces are two and are fixed on the wheel seats on the inner side of the cargo trolley, two pairs of rollers are arranged on the wheel seats, and each pair of rollers are arranged in a track in a rolling way.

7. The chain hoist of claim 1, characterized in that: the chain type lifting mechanism comprises a motor, the motor is connected with a double-end driving machine, two horizontally extending output heads of the double-end driving machine are respectively connected with a lower chain wheel, the lower chain wheel is connected with a steering chain wheel and an upper driving wheel through a chain, the steering chain wheel is positioned above a straight rail section of the track and below an arc-shaped section of the track, and a second connecting line which is vertically connected with the axis of the steering chain wheel and the axis of the lower chain wheel is parallel to the straight rail section; the upper driving wheel is positioned above the steering chain wheel and below the arc-shaped section, and the upper driving wheel and the lower chain wheel are positioned on two sides of the steering chain wheel.

8. The chain hoist of claim 7, characterized in that: each chain is further connected with a tensioning wheel positioned on the outer side of the chain, and the tensioning wheel is positioned between the upper driving wheel and the steering chain wheel.

9. The chain hoist of claim 8, characterized in that: the downstream section between the tensioner and the lower sprocket is parallel or substantially parallel to the upstream section between the lower sprocket and the diverting sprocket.

10. Chain hoist according to any of claims 1-9, characterized in that: the carrying trolley comprises a first carrying part and a second carrying part, wherein the carrying surface of the first carrying part is parallel or approximately parallel to the horizontal plane, one side, facing towards the track, of the second carrying part is connected with the connecting piece, one side, facing away from the track, of the second carrying part is provided with a blanking plane, and when the carrying trolley moves to the upper end of the track, the outer side of the blanking plane is lower than the inner side.