CN217398326U - Lifting device and crane - Google Patents

Abstract

The utility model relates to a hoisting machinery technical field provides a play to rise device and hoist, and above-mentioned play to rise device includes: the lifting device comprises a winding drum, a driving motor and a transmission shaft, wherein a lifting rope is wound on the winding drum, one end of the lifting rope, which is far away from the winding drum, is connected with a lifting appliance, and the driving motor and the winding drum are coaxially arranged; the transmission shaft coaxially penetrates through the winding drum, the output end of the driving motor is connected with the transmission shaft, the transmission shaft can drive the winding drum to rotate around the axis of the winding drum under the driving of the driving motor, and the winding drum drives the lifting rope to move so as to control the lifting appliance. The utility model provides a play to rise device is simpler than prior art structure, and does not have gear oil leak, the low scheduling problem of speed reduction transmission efficiency, and its probability of breaking down is lower, has not only simplified the structure, has still reduced the maintenance cost, simultaneously, combines the direct drive reel to rotate this advantage, has effectively improved the operating efficiency who plays to rise the device.

Description

Lifting device and crane

Technical Field

The utility model relates to a hoisting machinery technical field especially relates to a play to rise device and hoist.

Background

At present, a hoisting device of a crane mainly adopts a mode that a motor drives a speed reducer to drive a steel wire rope winding drum to rotate so as to hoist an article, and the hoisting device has a plurality of defects:

firstly, the occupied space is large, so that the distance between the center line of the lifting appliance and the field boundary is long, and the operation area of the lifting appliance is reduced;

the weight of the crane is larger, so that the cost of the trolley is increased, and the wheel pressure of the trolley is increased, so that the cost of a steel structure of the crane is increased;

thirdly, the rotational inertia of the transmission system is large due to the speed reduction of the speed reducer, so that the starting and braking time of the lifting system is long, and the lifting system consumes power and is difficult to position and stop;

fourthly, the multi-stage speed reduction transmission reduces the transmission efficiency of the system;

and fifthly, the reducer needs to be frequently lubricated and the abrasion of the gear is checked in the operation process, the maintenance cost is high, and the fault is easy to occur.

In conclusion, how to design a lifting device with simple structure, low maintenance cost and high operation efficiency to be suitable for a crane is a technical problem which is urgently needed to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a play to rise device and hoist for solve the complicated and low problem of operating efficiency of play to rise device structure among the prior art.

In a first aspect, the utility model provides a play to rise device, include: the winding drum, the driving motor and the transmission shaft;

a lifting rope is wound on the winding drum, and one end of the lifting rope, which is far away from the winding drum, is connected with a lifting appliance;

the transmission shaft coaxially penetrates through the winding drum, the output end of the driving motor is connected with the transmission shaft, the transmission shaft can drive the winding drum to rotate around the axis of the winding drum under the driving of the driving motor, and the winding drum drives the lifting rope to move so as to control the lifting appliance.

According to the utility model provides a play to rise device, driving motor is permanent magnet alternating current motor.

According to the utility model provides a pair of play to rise device, the reel includes barrel, first baffle and second baffle, first baffle connect in the barrel is close to driving motor's one end, the second baffle connect in the barrel is kept away from driving motor's one end, first baffle with the second baffle is laid relatively.

According to the utility model provides a pair of play to rise device, it still includes at least one first stopper to rise the device, first stopper with first baffle corresponds the setting, first stopper is used for the centre gripping or releases first baffle.

According to the utility model provides a pair of play to rise device, it still includes at least one second stopper to rise the device, the second stopper with the second baffle corresponds the setting, the second stopper is used for the centre gripping or releases the second baffle.

According to the utility model provides a pair of play to rise device, it still includes the stopper to play to rise the device, the stopper is located the transmission shaft is close to the one end of second baffle.

According to the utility model provides a pair of play to rise device, the barrel is equipped with the grooving, the lifting rope is followed the extending direction of grooving is around locating on the barrel.

In a second aspect, the present invention provides a crane, including: the lifting trolley comprises a frame and the lifting device, wherein the lifting device is arranged on the frame to form the lifting trolley.

According to the utility model provides a pair of crane, it is two to play to rise the device the driving motor syntropy that rises the device or reverse, and the reel is located parallelly on the frame.

According to the utility model provides a pair of crane, crane still includes drive arrangement, drive arrangement locates on the frame, be used for the drive the frame removes. The utility model provides a play to rise device, including reel, driving motor and transmission shaft, the reel is worn to locate by the transmission shaft, driving motor and transmission shaft lug connection, and driving motor can directly drive the transmission shaft and rotate, and the transmission shaft further directly drives the reel and rotates, and the reel drives the lifting rope and removes to the realization is to the control of the height of hoist. Compared with the prior art, the utility model provides a play to rise device need not with the help of the reduction gear, can directly rotate through driving motor drive reel, and its structure is simpler, and does not have gear oil leak, speed reduction transmission inefficiency scheduling problem, and its probability of breaking down is lower, has not only simplified the structure, has still reduced the maintenance cost, simultaneously, combines the direct drive reel to rotate this advantage, has effectively improved the operating efficiency who plays to rise the device.

Further, the utility model provides a crane, owing to have as above the play to rise device, consequently, has the same advantage as above.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be 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 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 diagram of a hoisting device provided in an embodiment of the present invention;

fig. 2 is a schematic layout diagram of a double lifting device provided by an embodiment of the present invention;

reference numerals are as follows:

1: a winding drum; 11: a barrel; 12: a first baffle plate; 13: a second baffle; 2: a drive motor; 3: a drive shaft; 4: a first brake; 5: a second brake; 6: and a limiting stopper.

Detailed Description

In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "plurality" means two or more, and other terms are analogous.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An embodiment of the utility model provides a play to rise device and hoist for the problem that the play to rise device structure among the solution prior art is complicated and the operating efficiency is low.

A hoisting device and a crane according to an embodiment of the present invention will be described with reference to fig. 1 and 2.

First aspect, as shown in fig. 1, an embodiment of the present invention provides a lifting device, including: reel 1, driving motor 2 and transmission shaft 3.

A lifting rope is wound on the winding drum 1, and one side of the lifting rope, which is far away from the winding drum 1, is connected with a lifting appliance.

The reel 1 is worn to locate coaxially by transmission shaft 3, and driving motor 2's output is connected with transmission shaft 3, and under driving motor 2's drive, transmission shaft 3 can drive reel 1 and rotate around its axis, and reel 1 drives the lifting rope and removes in order to control the hoist.

Specifically, reel 1 can be lifting rope individual layer winding structure, still can be for double-deck or multilayer winding structure, and the winding structure that can realize the lifting rope all is applicable to the utility model discloses the scope of protection, wherein, the lifting rope can be wire rope, fibre rope, also can be for the suspender.

Because its effect is to drive the lifting rope and rotates, and then drives the hoist removal of lifting rope below, and hoist and the object below the hoist all have certain weight, consequently, the material of reel 1 needs to possess certain hardness and bearing capacity, and the material of reel 1 can be rigid plastic, also can be for metal, for example ordinary carbon structural steel or stainless steel etc..

The inner core of the winding drum 1 is in a penetrating state, as shown in fig. 1, the transmission shaft 3 penetrates through the inner core of the winding drum 1 from one end of the winding drum 1 and penetrates out from the other end of the winding drum 1.

The output end of the driving motor 2 is in driving connection with the transmission shaft 3, the output end of the driving motor 2 drives the transmission shaft 3 to rotate under the action of the driving motor 2, and the transmission shaft 3 further drives the winding drum 1 to rotate.

The embodiment of the utility model provides a play to rise device, play to rise the device and include reel 1, driving motor 2 and transmission shaft 3, and reel 1 is worn to locate by transmission shaft 3, and driving motor 2 is connected with the 3 transmissions of transmission shaft, and driving motor 2 can directly drive transmission shaft 3 and rotate, and transmission shaft 3 further directly drives reel 1 and rotates, and reel 1 drives the lifting rope and removes to the realization is to the control of the height of hoist. Compared with the prior art, the utility model provides a play to rise device need not with the help of the reduction gear, can directly rotate through 2 drive reels of driving motor 1, and its structure is simpler, and does not have gear oil leak, speed reduction transmission inefficiency scheduling problem, and its probability of breaking down is lower, has not only simplified the structure, has still reduced the maintenance cost, simultaneously, combines 1 this advantage of rotation of direct drive reel, has effectively improved the operating efficiency who plays to rise the device.

In an alternative embodiment, the drive motor 2 is a permanent magnet ac motor.

Specifically, the ordinary high-speed motor drives the winding drum after being decelerated by a gear, and the deceleration gear can be a single-row reducer outside the winding drum or can be installed inside the winding drum. However, the ordinary high-speed motor cannot run at a low speed, and the winding drum can be driven only by the reduction gear when the rated high-speed stage is reached after the motor is started.

The embodiment of the utility model provides a driving motor 2 is permanent magnet alternating current motor, and it has low-speed, big moment of torsion characteristics, can work for a long time when the low speed, so need not reduction gear direct drive reel, makes the utility model provides a play to rise the device and possess advantages such as simple structure, no gear oil leak, no reduction drive is efficient.

In an alternative embodiment, the winding drum 1 comprises a drum 11, a first baffle 12 and a second baffle 13, wherein the first baffle 12 is connected to one end of the drum 11 close to the driving motor 2, the second baffle 13 is connected to one end of the drum 2 far from the driving motor 2, and the first baffle 12 and the second baffle 13 are oppositely arranged.

Specifically, as shown in fig. 1, the winding drum 1 is composed of three parts, i.e., a drum body 11, a first baffle 12 and a second baffle 13, wherein the first baffle 12 is connected to the right side of the winding drum 1, i.e., near the driving motor 2, and the second baffle 13 is connected to the left side of the winding drum 1.

Of course, the positions of the first baffle 12 and the second baffle 13 can be exchanged, and the effect of limiting the lifting rope to prevent the lifting rope from sliding off from the two ends can be achieved.

For convenience of operation, the first baffle 12 and the second baffle 13 may be flanges, and are detachably connected to the barrel 11 through holes in the flanges.

In an alternative embodiment, the hoisting device further comprises at least one first brake 4, the first brake 4 is arranged corresponding to the first baffle 12, and the first brake 4 is used for clamping or releasing the first baffle 12.

Specifically, as shown in fig. 1, a first brake 4 is correspondingly disposed on the first baffle 12, and the first brake 4 is used for controlling the rotation of the winding drum 1 and controlling the position and stop of the spreader through the lifting rope on the winding drum 1.

The first brake 4 is generally used for deceleration stop of the spreader and maintenance of the state after the spreader is stopped, and can also be used for safety braking of the drum in an emergency situation. For example, emergency braking, in which the spreader swings in the same direction as the current running direction, and the first brake 4 is arranged to grip the first flap 12 and lock the first flap 12 to stop the rotation of the reel 1.

When the reel 1 needs to rotate to release or retract the lifting rope, the first brake 4 releases the first baffle plate 12, so that the first baffle plate 12 is in a free rotation state.

The number of the first brakes 4 may be 1 or plural, and in order to further secure the braking effect and prevent the brake from failing, it is preferable to arrange a plurality of the first brakes 4, the plurality of the first brakes 4 being arranged in the circumferential direction of the first barrier 12, and even if one of the brakes fails, the other brakes can normally produce the braking effect.

The number of the plurality of first brakes 4 here may be 2, or 2 or more, and is not particularly limited, and may be arranged according to actual circumstances.

In an alternative embodiment, the hoisting device further comprises at least one second brake 5, the second brake 5 being arranged in correspondence with the second stop 13, the second brake 5 being adapted to clamp or release the second stop 13.

Specifically, in order to further ensure the braking effect of the hoisting device, as shown in fig. 1, a brake, that is, a second brake 5, may be correspondingly disposed on the second baffle 13, and the second brake 5 may be the same as or different from the first brake 4, and for the convenience of replacing and repairing the brake, the first brake 4 and the second brake 5 are preferably of the same structure.

As above, in order to prevent one of the stoppers from failing, the number of the second stoppers 5 is preferably plural, and a plurality of the second stoppers 5 are arranged in the circumferential direction of the second barrier 13.

The first brake 4 and the second brake 5 or some of the plurality of brakes are individually controlled, some as deceleration stop braking and the other as parking hold braking. The braking moment of the deceleration braking is used for deceleration stop of the winding drum and the lifting appliance thereof, so that the slow deceleration of the lifting appliance is ensured, and the impact caused by over-violent braking is avoided. The parking hold brake ensures that the drum 1 and its spreader are safely stopped at any position, including airborne hovering of the load on the spreader.

In an alternative embodiment, the hoist further comprises a stop 6, the stop 6 being provided at an end of the drive shaft 3 adjacent the second barrier 13.

Specifically, as shown in fig. 1, the stopper 6 is provided at the leftmost side of the hoist, and is connected to the free end of the transmission shaft 3.

The limiter 6 is a height limiter and is used for detecting the number of rotation turns of the output end of the driving motor 2 or the transmission shaft 3 and further identifying the number of rotation turns of the winding drum 1, so that the lifting appliance is judged to reach the upper limit, and a power supply is cut off to prevent the lifting appliance from impacting the top.

In an alternative embodiment, the barrel 2 is provided with a rope groove, and the lifting rope is wound on the barrel 2 along the extending direction of the rope groove. When the lifting ropes need to be wound in multiple layers, the outer layer lifting ropes are wound in the groove formed by the inner layer lifting ropes. The lifting rope can be any rope such as a steel wire rope, a fiber braided rope and the like. If the sling is connected with a sling instead of a lifting rope, the outer sling is directly wound on the inner sling.

Specifically, in order to prevent the lifting rope from sliding on the barrel 2, especially under the less circumstances of lifting rope, if the condition of sliding appears, the hoist can be caused to swing, thereby driving the load swing below the hoist, the incident scheduling problem appears easily, consequently, because of the consideration of safety, can set up the grooving at barrel 2, the lifting rope is around locating grooving department, in order to carry on spacingly to the lifting rope.

Right the utility model provides a play to rise device's theory of operation carries out simple introduction: when the lifting appliance is used, the permanent magnet alternating current motor directly drives the winding drum 1 to rotate forwards and reversely, and the winding drum 1 winds or puts down the lifting rope to enable the lifting appliance to ascend or descend; when the power is off, the permanent magnet alternating current motor direct-drive winding drum 1 stops, and the brake is closed, so that the lifting device stops working and is kept at a parking position.

Compare in current play to rise the device, the utility model provides a play to rise device has following advantage:

the overall dimension is small: the traditional speed reducer is omitted, and the overall dimension is greatly reduced;

the dead weight is light: because the structure is simple, the self weight is greatly reduced, and the load of the trolley on the steel structure is greatly reduced;

the moment of inertia is small: because the gear transmission of the speed reducer is omitted, the rotational inertia is smaller, and the braking is easier to start and the accurate parking is easier;

the transmission efficiency is high: the energy loss of the gear transmission of the speed reducer is eliminated;

the heat dissipation effect is good: the external standard permanent magnet alternating current motor is provided with an aluminum radiating fin, and has better radiating effect compared with a built-in steel winding drum;

the processing is simple: the external standard permanent magnet alternating current motor is constructed by a universal motor, the influence of self deformation on the built-in motor is not required to be considered by the winding drum 1, and the external standard permanent magnet alternating current motor is material-saving and easy to process; the winding drum 1 is of a traditional structure, needs no non-calibration system, and can directly adopt a universal product of the traditional structure; the material of the reel 1 does not need special requirements; correspondingly, the manufacturing cost of the lifting device is lower;

the performance is more stable: the risk that the oil leakage of the speed reducer, the abrasion of the gear, the force deformation of the winding drum 1 influence the motor and the like is avoided, and the permanent magnet alternating-current direct-drive performance is more stable;

maintenance is easier: the speed reducer is not required to be maintained, the external permanent magnet alternating current motor is convenient to maintain, and the winding drum 1 can be directly replaced without considering motor factors due to the abrasion of the winding drum rope groove.

In a second aspect, the embodiment of the present invention further provides a crane, which includes a frame and a lifting device as described above, wherein the lifting device is disposed on the frame to form a crane trolley.

In particular, the crane comprises a frame and a hoist as described in the above embodiments, wherein the hoist is provided on the frame, thereby constituting a trolley. Since the crane includes the hoisting device shown in the above embodiment, the specific structure of the hoisting device refers to the above embodiment, and since the crane adopts the technical scheme of the above embodiment, the crane at least has all the beneficial effects brought by the technical scheme of the above embodiment, and details are not repeated herein.

In an alternative embodiment, the number of the lifting devices is two, the driving motors of the two lifting devices are in forward or reverse directions, and the winding drums are arranged on the frame in parallel.

Specifically, as shown in fig. 2, in actual operation, two lifting devices may be provided as required, the two lifting devices are arranged in a forward direction or a reverse direction, that is, two driving motors and two drums are arranged in parallel to form a main and auxiliary lifting mechanism, and the two lifting devices may be the same or different in specification and size and may be provided according to actual requirements.

The two hoisting devices are arranged, so that the synchronous hoisting can be realized for objects which are heavier or have larger size and need two hoisting points according to the needs; and the lifting device can also independently work, and realize the sequential independent efficient lifting of a plurality of objects.

In an optional embodiment, the crane further comprises a driving device, and the driving device is arranged on the frame to drive the frame to move.

Specifically, in order to realize the horizontal movement of the trolley and improve the convenience of the crane, a driving device can be arranged on the frame and used for driving the trolley to move, so that the lifting device is driven to move to the position of an object to be lifted and hung along with the trolley.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment, and those skilled in the art can understand and implement the solution without creative efforts.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A hoisting device, comprising: the winding drum, the driving motor and the transmission shaft;

a lifting rope is wound on the winding drum, and one end of the lifting rope, which is far away from the winding drum, is connected with a lifting appliance;

the transmission shaft coaxially penetrates through the winding drum, the output end of the driving motor is connected with the transmission shaft, the transmission shaft can drive the winding drum to rotate around the axis of the winding drum under the driving of the driving motor, and the winding drum drives the lifting rope to move so as to control the lifting appliance.

2. A hoist as claimed in claim 1, wherein the drive motor is a permanent magnet ac motor.

3. The hoist as in claim 1, wherein the drum includes a barrel, a first stop plate and a second stop plate, the first stop plate is connected to an end of the barrel adjacent the drive motor, the second stop plate is connected to an end of the barrel remote from the drive motor, and the first stop plate is disposed opposite the second stop plate.

4. A hoist as claimed in claim 3, further comprising at least one first brake disposed in correspondence with the first stop plate for clamping or releasing the first stop plate.

5. The hoist as in claim 4, further including at least one second brake disposed in correspondence with the second stop plate for clamping or releasing the second stop plate.

6. A hoist as claimed in claim 3, further comprising a stop provided at an end of the drive shaft adjacent the second stop.

7. The hoist as claimed in claim 3, wherein the cylinder is provided with a rope groove, and the hoist rope is wound around the cylinder along an extending direction of the rope groove.

8. A crane comprising a frame and a hoist as claimed in any one of claims 1 to 7, the hoist being provided on the frame to form a hoist trolley.

9. The crane according to claim 8, wherein the number of the hoisting devices is two, the driving motors of the two hoisting devices are in the same direction or in opposite directions, and the winding drums are arranged on the frame in parallel.

10. The crane as claimed in claim 8, further comprising a driving device disposed on the frame for driving the frame to move.

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