CN219507533U - Counterweight hanging device for crane based on hoisting speed reducer - Google Patents

Abstract

The utility model discloses a counterweight hanging device for a crane based on a winch speed reducer, which comprises the winch speed reducer (1), a rope component (2), a counterweight hanging point (5) and a combined counterweight (6), wherein the rope component (2) is wound on the winch speed reducer (1), the counterweight hanging point (5) is fixedly arranged on the combined counterweight (6), and the rope component (2) is sleeved on the counterweight hanging point (5) during hanging. The utility model designs the counterweight hanging device based on the hoisting speed reducer, which is simple and convenient to lift the counterweight through the hoisting speed reducer of the crane, has good economy, is not limited by travel, does not have the problem of synchronism, and has high applicability.

Description

Counterweight hanging device for crane based on hoisting speed reducer

Technical Field

The utility model relates to a counterweight hooking device for a crane based on a hoisting speed reducer, and belongs to the technical field of engineering machinery.

Background

With the continuous expansion of the crane market, the crane types and the model spectrums are continuously updated, and novel cranes such as universal chassis automobile cranes and the like are gradually appeared in domestic and foreign markets. The crane has the advantages of strong trafficability, strong cross-country capability, low price, simple and reliable use and the like. It has been widely used by overseas users due to its good native adaptability. However, the crane is limited by the self-bearing capacity of the universal chassis and domestic and foreign regulations, the weight control of the whole crane is more strict, and higher requirements are put on the optimization of the loading weight of the crane and the cost of the whole crane.

In order to meet the requirements of regulations and the weight of the whole crane, the loads of all bridges are more reasonably distributed, and the running state of the universal chassis automobile crane mostly adopts combined weights or does not carry the weights. If the combined counterweight crane is not provided with a counterweight hanging device, other vehicles are required to assist in lifting and installing counterweights, and great inconvenience is brought to the boarding operation. Therefore, it is necessary to design a simple and reliable counterweight hitch for small and medium tonnage crane products.

The existing counterweight hanging mode for large-tonnage products at home and abroad mainly comprises a double-cylinder synchronous hanging system, and adopts a series of hydraulic elements such as an auxiliary control valve, a flow dividing valve, a balance valve, an energy accumulator, a counterweight cylinder and the like, so that the whole system has more weight increase, greatly improves the cost and has poorer economy and applicability for small and medium-tonnage products.

In order to reduce design cost and weight, some small tonnage cranes at home and abroad adopt a single cylinder and an auxiliary valve for hanging, the number of oil cylinders is reduced, and a single oil cylinder jacking mode is used for realizing counterweight hanging.

At present, a large-tonnage crane is mostly hung by adopting a double-cylinder synchronous hanging system for counterweight hanging. The counterweight hanging system consists of a flow dividing valve, a balance valve, an energy accumulator, a hydraulic cylinder and the like. The hydraulic oil way to the upper car is divided into two ways through the flow dividing valve, oil is supplied to the counterweight oil cylinders at two sides respectively, the double-cylinder lifting synchronism is guaranteed, the balance valves at two sides play roles in load maintenance and throttling speed limitation, and the accumulator ensures stable and reliable whole counterweight lifting process. The system is generally provided with a remote control device, and a single person can operate the boarding and the turning through a remote control box to realize the counterweight hanging.

Some small-tonnage cranes adopt a single-cylinder counterweight jacking system, a hydraulic cylinder is arranged on a chassis, a counterweight is jacked by the cylinder, the combined counterweight is hung, and a counterweight bracket with higher height is required to be designed on the chassis to compensate the stroke of the cylinder.

The existing counterweight hanging method has the following defects:

(1) The double-cylinder synchronous counterweight hanging system is adopted for hanging, the process is stable and reliable, the requirement on the diverter valve is higher, if the diverter valve fails, the hanging oil cylinder is out of sync in lifting and landing, counterweight deflection is caused, even the internal elements of the oil cylinder are damaged, and the maintenance cost is higher; and for small-tonnage universal chassis crane products, if the scheme is adopted, the design cost and the weight of the whole machine are improved, and the realization of the design target of the products is not facilitated.

(2) The single-cylinder counterweight jacking system saves the design cost of the oil cylinder, but the counterweight support needs to be designed into a larger size and placed in the middle of the frame, so that a larger storage space is occupied, meanwhile, the stroke of the jacking oil cylinder is limited due to insufficient arrangement space of the chassis, and the counterweight support needs to be heightened to compensate the stroke in order to ensure that the counterweight can be smoothly hung on the turntable, so that the weight of the whole machine is increased.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a counterweight hooking device for a crane based on a hoisting speed reducer, which is simple and convenient, has good economical efficiency, is not limited by travel, does not have the problem of synchronism and has high applicability, and the counterweight is lifted by the hoisting speed reducer of the crane.

In order to achieve the purpose, the utility model provides a counterweight hanging device for a crane based on a hoisting speed reducer, which comprises a segmented hoisting speed reducer, a rope component, a counterweight hanging point and a combined counterweight, wherein the rope component is wound on the segmented hoisting speed reducer, the counterweight hanging point is fixedly arranged on the combined counterweight, and the rope component is sleeved on the counterweight hanging point during hanging.

Preferably, the winding speed reducer comprises a sectional winding drum and a winding drum main body, wherein the two sides of the winding speed reducer main body are provided with sectional winding drums special for winding and hanging steel wire ropes;

preferably, the counterweight hanging point comprises a first lug plate and a protrusion for hanging the rope assembly, wherein the first lug plate is fixedly arranged on the combined counterweight, and the protrusion is fixedly arranged on the lug plate.

Preferably, the rope assembly comprises a wire rope and a lasso, the outer end of the wire rope being provided with the lasso for being fitted over the protrusion.

Preferably, a counterweight fixing point is included, which will fix the combined counterweight to the crane on the turntable when the crane is articulated.

Preferably, the counterweight fixing point comprises a second lug plate, a pin shaft and a spring clamp, wherein the second lug plate is fixed on the combined counterweight, and the combined counterweight is connected to the turntable of the crane through the pin shaft and the spring clamp during the hanging.

Preferably, the hoist comprises a pulley assembly rotatably arranged on a turntable of the hoist, the rope assembly having a middle end passing around the pulley assembly.

Preferably, the pulley assembly comprises a fixed pulley, which is arranged on a turret of the crane.

Preferably, the pulley assembly further comprises a movable pulley block around which the rope assembly winds to fix the rope end portion of the rope assembly (2) on the turntable of the crane.

The utility model has the beneficial effects that:

(1) For a small-tonnage crane with design weight and design cost needing strict control, the hoisting speed reducer is used as a counterweight lifting type of a counterweight hooking power source, the applicability is strong, and the cost can be reduced by about 75 percent compared with a double-cylinder counterweight hooking system;

(2) The utility model uses the steel wire rope as the counterweight lifting tool to meet the requirement of larger lifting stroke of counterweight hanging, is not limited by the counterweight hanging stroke, can increase the length of the steel wire rope and the number of winding turns according to actual requirements, and avoids adding redundant counterweight brackets or lifting devices;

(3) Compared with the prior art, the weight of the utility model is less increased, and only the left and right side dimensions of the winding drum and the dimension of the tail frame of the turntable are required to be prolonged by about 6 pitches;

(4) The whole set of mechanism is simple and convenient to use, the left steel wire rope and the right steel wire rope are simultaneously driven by the winding drum, the synchronism is good, and the maintenance and replacement cost is low.

Drawings

Fig. 1 is a perspective view of the present device.

Reference numerals meaning, 1-hoist speed reducer; 2-rope assembly; a 3-pulley assembly; 4-counterweight fixing points; 5-counterweight hitch points; 6-combined counterweight.

Detailed Description

The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that, if there is a directional indication (such as up, down, left, right, front, rear.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The utility model aims to solve the problems of high cost, poor synchronism, heavy weight, occupied space and the like existing in the counterweight hanging system at present, and the hanging device is simple and convenient, light in weight and good in economical efficiency, is not limited by travel, does not have the problem of synchronism and is high in applicability.

The utility model provides a counterweight hooking device for a crane based on a winch, and the structure diagram of the counterweight hooking device is shown in figure 1.

The working principle is as follows: the hoisting speed reducer is used as a counterweight hanging power source, the middle section of the hoisting speed reducer is used for normal hoisting of a crane, the two sides of the winding drum are used for counterweight hanging, the two sides of the winding drum are respectively wound with steel wire ropes with lasso with equal length, and the steel wire ropes at the two sides are fixed on the winding drum by using special ropes under a normal state. When the counterweight hanging operation is needed, rope heads of the steel wire ropes with the lasso fixed on two sides of the winding drum are taken down and respectively extend downwards across the pulley assemblies on two sides, the winch is started to rotate clockwise (when the winch is viewed from the left side of the turntable), the two steel wire ropes are enabled to fall down, the lasso is enabled to fall near the counterweight hanging points, at the moment, the winch speed reducer stops rotating, the lasso is respectively hung on the counterweight hanging points on two sides, and after firm hanging is confirmed, the winch speed reducer is started to rotate anticlockwise to enable the combined counterweight to rise. When the combined counterweight rises to the bottom surface of the rear tail frame of the turntable, the upper surface of which is attached to the crane, and the counterweight fixing point is overlapped with the turntable connecting point, the pin shaft and the spring clip are used for inserting the counterweight fixing point to fix the combined counterweight on the turntable of the crane.

After the hooking is finished, the winch speed reducer is started to rotate clockwise by a small angle, the hooking lasso and the counterweight hanging point are disconnected, the steel wire rope bypasses the pulley assembly and is retracted to the winding drum, the lasso is firmly fixed, and then normal lifting operation can be performed.

Specifically, the counterweight hanging point comprises a first lug plate and a bulge for hanging the steel wire rope, the lug plate is fixedly arranged on the combined counterweight, the bulge is fixedly arranged on the lug plate, and the lug plate is a planar plate;

the counterweight fixing point comprises a second lug plate, a pin shaft and a spring clamp, wherein the second lug plate is fixed on the combined counterweight, and the combined counterweight is fixedly connected to the crane turntable through the pin shaft and the spring clamp.

The wire rope, lasso, pulley assembly and combined counterweight have a plurality of types which can be adopted in the prior art, and a person skilled in the art can select a proper type according to actual requirements, so that the embodiment is not exemplified one by one.

On the basis of adopting the winding drum as a counterweight hanging power source, the hanging steel wire rope can be replaced by other ropes (such as iron chains, composite ropes and the like) to carry out counterweight lifting;

for the counterweight lifting with larger weight, a movable pulley and a fixed pulley block can be additionally added to reduce the single rope tension;

the rope end part of the hanging steel wire rope can be a rope sleeve or can be of other rope end fixing structures.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims (9)

1. The counterweight hanging device for the crane based on the winch speed reducer is characterized by comprising the winch speed reducer (1), a rope component (2), a counterweight hanging point (5) and a combined counterweight (6), wherein the rope component (2) is wound on the winch speed reducer (1), the counterweight hanging point (5) is fixedly arranged on the combined counterweight (6), and the rope component (2) is sleeved on the counterweight hanging point (5) during hanging.

2. The counterweight hooking device for a crane based on a hoisting speed reducer according to claim 1, characterized in that,

the winding speed reducer comprises a sectional winding drum and a winding drum main body, wherein the two sides of the winding drum main body of the winding speed reducer (1) are provided with sectional winding drums special for winding and hanging steel wire ropes.

3. The counterweight hooking device for a crane based on a hoisting speed reducer according to claim 1, characterized in that,

the counterweight hanging point (5) comprises a first lug plate and a bulge for hanging the rope assembly (2), the first lug plate is fixedly arranged on the combined counterweight (6), and the bulge is fixedly arranged on the lug plate.

4. A counterweight hitch for a crane based on a hoist reducer as claimed in claim 3, characterized in that,

the rope component (2) comprises a steel wire rope and a lasso, and the lasso used for being sleeved on the bulge is arranged at the outer end of the steel wire rope.

5. The counterweight hooking device for a crane based on a hoisting speed reducer according to claim 1, characterized in that,

the counterweight fixing device comprises a counterweight fixing point (4), wherein the counterweight fixing point (4) is used for fixing a combined counterweight (6) on a turntable of a crane during hanging.

6. The counterweight hanging device for a crane based on a hoisting speed reducer according to claim 5, wherein,

the counterweight fixing point (4) comprises a second lug plate, a pin shaft and a spring clamp, the second lug plate is fixedly arranged on the combined counterweight (6), and the combined counterweight (6) is connected to a turntable of the crane through the pin shaft and the spring clamp.

7. The counterweight hooking device for a crane based on a hoisting speed reducer according to claim 1, characterized in that,

the device comprises a pulley assembly (3), wherein the pulley assembly (3) is arranged on a turntable of a crane, and the middle end of a rope assembly (2) bypasses the pulley assembly (3).

8. The counterweight hooking device for a crane based on a hoisting reducer according to claim 7, characterized in that,

the pulley assembly (3) comprises a fixed pulley which is arranged on a turntable of the crane.

9. The counterweight hooking device for a crane based on a hoisting reducer according to claim 7, characterized in that,

the pulley assembly (3) further comprises a movable pulley block, the movable pulley block is used for reducing single rope tension, and the rope assembly (2) bypasses the movable pulley block to fix the rope head part of the rope assembly (2) on the turntable of the crane.