WO2013044622A1

WO2013044622A1 - Stacking machine and lifting system thereof

Info

Publication number: WO2013044622A1
Application number: PCT/CN2012/073950
Authority: WO
Inventors: 单俊峰; 董元俊; 王庆云
Original assignee: 三一集团有限公司
Priority date: 2011-09-30
Filing date: 2012-04-12
Publication date: 2013-04-04
Also published as: CN102502272A

Abstract

Disclosed in the present invention is a lifting system of a stacking machine, which comprises a chain (1) whose upper end is connected with a gantry (01) of the stacking machine through a chain wheel and whose lower end is connected with a block to be stacked. The system further comprises an elastic device (3) which can be horizontally and transversely telescoped, and a transmission part (2) through which a vertical force of the chain (1) is converted into a horizontal driving force of the elastic device (3) and the chain (1) is connected with the elastic device (3). The elastic device (3) and the transmission part (2) are arranged above the block to be stacked. The lifting system can damp vibration and impact caused by sudden acceleration or deceleration, enhancing operational reliability and safety of the stacking machine. Disclosed in the present invention is a stacking machine, which comprises the gantry (01) and the lifting system whose chain (1) is connected with the gantry (01).

Description

The invention relates to a Chinese patent application filed on September 30, 2011 by the Chinese Patent Office, the application number is 201110299404.1, and the invention name is "a stacker and its spreader system". Priority is hereby incorporated by reference in its entirety.

Technical field

The invention relates to the technical field of engineering machinery, in particular to a spreader system for a stacker. In addition to this, the invention also relates to a stacker comprising the above-described spreader system.

Background technique

The utility model is used for narrow passages and limited space operations. It is an ideal equipment for loading and unloading pallets in high-rise warehouses and workshops. It has the advantages of structural single-unit, flexible control, good micro-motion and high explosion-proof safety performance. It can be widely used. Petroleum, chemical, pharmaceutical, textile, military, coal and other industries, as well as ports, railways, warehouses and other places containing explosive mixtures, loading, unloading, stacking and handling operations.

According to the current market situation, the existing stacker usually uses a telescopic cylinder with a chain to lift the block. In recent years, the stacking height of stackers has gradually increased, especially for container empty container stackers, which often need to be raised to a height of more than 20 meters. Because the stacker needs to stop and accelerate the deceleration during the lifting process, especially when lifting heavy empty boxes, it will bring great impact and vibration to the spreader system. High-intensity shocks and vibrations reduce the life of the chain and even cause the chain to break. If the chain is broken when the spreader is working in the sky, the entire spreader and container will fall, which will not only cause the damage of the spreader and the container, but also cause huge economic losses, and also give the operator's personal safety belt. Come to a great threat.

In view of this, it is urgent to address the above technical problems, and optimize the design of the spreader system for the existing stacker, so that the spreader system can slow down the vibration of the spreader and the impact on the chain during the lifting process. Thereby extending the service life of the chain; and effectively preventing the spreader from falling when the chain breaks, enhancing the working stability and safety of the stacker.

Summary of the invention

The technical problem to be solved by the present invention is to provide a spreader system for a stacker, which can slow down the vibration of the spreader and the impact on the chain during the lifting process of the block, thereby extending the chain The service life, enhance the working stability and safety of the stacker. Another technical problem to be solved by the present invention is to provide a stacker including the above-described spreader system. In order to solve the above technical problem, the present invention provides a spreader system for a stacker, comprising a chain, the upper end of the chain is connected to the gantry of the stacker by a sprocket, and the lower end of the chain is connected to the pile to be stacked a block; further comprising a horizontally translatable elastic device for converting a vertical force of the chain into a horizontal driving force of the elastic device, the chain being coupled to the elastic device by the transmission member; The elastic device and the transmission member are disposed above the object to be stacked.

Preferably, the elastic device comprises an accumulator and a horizontally disposed telescopic cylinder, the accumulator being connected to the rodless cavity of the telescopic cylinder through a one-way throttle valve, the accumulator being filled with hydraulic oil and High pressure gas, the chain being connected to the piston rod of the telescopic cylinder through the transmission member.

Preferably, the transmission member is a link having a bent structure with an opening inward; the bending structure includes a horizontal portion and a vertical portion, and an end of the horizontal portion is fixedly connected to the chain, the vertical The end of the portion is fixedly coupled to the piston rod of the telescopic cylinder; and the intersection of the horizontal portion and the vertical portion is hinged in the vertical plane with the spreader system by a hinge shaft.

Preferably, the high pressure gas in the accumulator is high pressure nitrogen.

Preferably, the resilient means further comprises a shut-off valve, the accumulator being further connected to the hydraulic system of the spreader system via the shut-off valve.

Preferably, the elastic means is a spring disposed horizontally and laterally, and the transmission member is coupled to an outer side of the spring.

Preferably, the elastic device is in a pre-compressed state, and a friction block is disposed between the outer side of the elastic device and the gantry frame of the stacker, and the friction block is connected to the elastic device.

Preferably, the number of the chains is two, and the two chains are symmetrically disposed on both inner sides of the gantry frame, and each of the chains is connected to the elastic device through the transmission member.

The invention provides a spreader system for a stacker, comprising an elastic device capable of horizontally and horizontally stretching, converting a vertical force of the chain into a driving component of a horizontal driving force of the elastic device, and the chain is connected with the elastic device through the transmission component The elastic device and the transmission component are disposed above the to-be-stacked block.

With this structure, in the process of lifting the block by the stacker, if the chain suddenly accelerates or decelerates, the chain applies an external force in the vertical direction to the transmission member, and the transmission member converts the vertical force into a horizontal drive of the elastic device. The force, the elastic device is compressed or extended, and the elastic force of the elastic device itself exerts a reaction force on the transmission component, which forms a certain damping on the acceleration or deceleration of the chain, thereby slowing down the sudden acceleration or deceleration on the spreader and the chain. Vibration and shock, greatly enhancing the heap High machine reliability and safety.

In a specific embodiment, the elastic device may include an accumulator and a horizontally disposed telescopic cylinder, and the accumulator is connected to the rodless cavity of the telescopic cylinder through a one-way throttle valve, and the accumulator is provided with hydraulic oil. And the high pressure gas, the chain is connected to the piston rod of the telescopic cylinder through the transmission component. The transmission component may be a connecting rod having an open inwardly bent structure; the bending structure comprises a horizontal portion and a vertical portion, the end of the horizontal portion is fixedly connected with the chain, and the end of the vertical portion is fixedly connected with the piston rod of the telescopic cylinder And the intersection of the horizontal portion and the vertical portion is hinged in the vertical plane by the hinge shaft and the spreader system.

With this type of structure, when the stacker lifts the block upwards, when the chain moves at a uniform speed, the above-mentioned chain, transmission parts and telescopic cylinders are balanced, and the entire spreader system is free from shock and vibration. When the spreader system has just started or the chain suddenly accelerates, the chain applies an upward external force to the connecting rod, causing the horizontal portion of the connecting rod to rotate about the hinge axis, and the vertical portion of the connecting rod rotates around the hinge axially inner side, Further, the piston rod of the telescopic cylinder is driven to move inward. At this time, the rodless chamber pressure of the telescopic cylinder tends to increase, and the rodless chamber of the telescopic cylinder is connected to the accumulator through the one-way throttle valve, and the accumulator is The high pressure gas forms a certain damping on the movement of the piston rod of the telescopic cylinder, preventing it from moving inward, thus reducing the shock and vibration of the chain system caused by the sudden acceleration of the chain. When the spreader system suddenly stops or decelerates, the chain applies a downward external force to the connecting rod, causing the horizontal portion of the connecting rod to rotate downward about the hinge axis, and the vertical portion of the connecting rod rotates around the hinge axial direction, thereby driving The piston rod of the telescopic cylinder moves to the outside. At this time, the rodless chamber pressure of the telescopic cylinder has a tendency to decrease. Since the rodless chamber of the telescopic cylinder is connected to the accumulator through the one-way throttle valve, the rodless chamber of the telescopic cylinder is made. The pressure does not decrease rapidly, preventing the piston rod of the telescopic cylinder from moving outward, thus reducing the shock and vibration of the chain system caused by the sudden deceleration of the chain.

It can be seen from the above work process that the spreader system adopting the above structure can utilize the elastic force of the elastic device in the process of lifting the block to slow down the shock and vibration caused by the sudden acceleration or deceleration of the chain, and play the role of the spreader system. It has a certain protective effect and prolongs the service life of the chain, which enhances the working stability of the stacker.

The present invention also provides a stacker comprising a gantry and a drive system; further comprising a spreader system as described above, the chain of the spreader system being coupled to the gantry.

Preferably, it is specifically a container empty container stacker. Since the above-mentioned spreader system has the above technical effects, the stacker including the spreader system should also have the same technical effect, and details are not described herein again.

DRAWINGS

1 is a schematic structural view of a first embodiment of a spreader system for a stacker according to the present invention;

2 is a schematic structural view of a second embodiment of a spreader system for a stacker according to the present invention;

3 is a schematic structural view of a specific embodiment of a stacker provided by the present invention; and FIG. 4 is a partial enlarged view of the joint of the buffer device of FIG.

Wherein, the correspondence between the reference numerals in FIG. 1 to FIG. 4 and the component names is:

1 chain; 2 transmission parts; 3 elastic device; 4 friction block; 21 horizontal part; 22 vertical part; 23 hinged shaft; 31 accumulator; 32 telescopic cylinder; 33 one-way throttle valve;

detailed description

The core of the invention is to provide a spreader system for a stacker, which can slow the vibration of the spreader and the impact on the chain during the lifting process of the block, and extend the service life of the chain. And it can prevent the spreader from falling when the chain breaks, and enhance the working stability and safety of the stacker. Another core of the present invention is to provide a stacker including the above-described spreader system.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a first specific embodiment of a spreader system for a stacker according to the present invention.

In a specific embodiment, as shown in FIG. 1, the spreader system for a stacker provided by the present invention comprises a chain 1, an elastic device 3 and a transmission component 2; the chain 1 is an important component in the spreader system. The upper end of the chain 1 is connected to the gantry 01 of the stacker through a sprocket, and the lower end of the chain 1 is connected to the object to be piled. During the stacking process, the lifting of the block is realized by the up and down movement of the chain 1; the elastic device 3 is used for a main component for mitigating shock and vibration generated in the stacking operation, which is disposed above the block and can be horizontally stretched horizontally; the transmission member 2 is a connecting member connecting the chain 1 and the elastic device 3, which is also disposed on the object Above the block, the vertical force of the chain 1 can be converted into the horizontal driving force of the elastic means 3, and the chain 1 is connected to the elastic means 3 via the transmission member 2.

With this structure, if the stacker lifts the block, if the chain 1 suddenly accelerates or When decelerating, the chain 1 applies an external force in the vertical direction to the transmission member 2, and the transmission member 2 converts the vertical force into the horizontal driving force of the elastic device 3, drives the elastic device 3 to compress or elongate, and the elasticity of the elastic device 3 itself. The force exerts a reaction force on the transmission component 2 to form a certain damping on the acceleration or deceleration of the chain 1, thereby slowing the vibration and impact of the sudden acceleration or deceleration on the spreader and the chain 1, and greatly enhancing the work of the stacker. Reliability and security.

In a specific embodiment, the elastic device 3 may include an accumulator 31 and a horizontally disposed telescopic cylinder 32. The accumulator 31 is connected to the rodless cavity of the telescopic cylinder 32 through the one-way throttle valve 33, and the accumulator 31 Hydraulic oil and high pressure gas are contained therein, and the chain 1 is connected to the piston rod of the telescopic cylinder 32 through the transmission member 2. The transmission member 2 may be a link having an open inwardly bent structure; the bent structure includes a horizontal portion 21 and a vertical portion 22, and the end of the horizontal portion 21 is fixedly coupled to the chain 1, and the end of the vertical portion 22 is telescopic The piston rod of the cylinder 32 is fixedly connected; and the intersection of the horizontal portion 21 and the vertical portion 22 is hinged in the vertical plane with the spreader system via the hinge shaft 23.

In the following, the above specific embodiment is taken as an example to describe in detail the working process of the spreader system in the lifting block.

With this type of structure, during the upward lifting of the block by the stacker, when the chain 1 moves at a constant speed, the components of the chain 1, the transmission member 2 and the telescopic cylinder 32 are balanced, and the entire spreader system is not affected. Shock and vibration;

When the spreader system has just started or the chain 1 suddenly accelerates, the chain 1 applies an upward external force to the link, causing the horizontal portion 21 of the link to rotate upward about the hinge shaft 23, while the vertical portion 22 of the link surrounds the hinge shaft 23 Rotating inwardly causes the piston rod of the telescopic cylinder 32 to move inward. At this time, the rodless chamber pressure of the telescopic cylinder 32 tends to increase, and the rodless chamber of the telescopic cylinder 32 passes through the one-way throttle valve 33. The energy device 31 is connected, and the high-pressure gas in the accumulator 31 forms a certain damping on the movement of the piston rod of the telescopic cylinder 32, preventing it from moving inward, thereby reducing the shock and vibration of the chain 1 suddenly accelerating the formation of the spreader system. .

When the spreader system suddenly stops or decelerates, the chain 1 applies a downward external force to the link, and the horizontal portion 21 of the link is rotated downward about the hinge shaft 23, while the vertical portion 22 of the link is oriented around the hinge shaft 23. The outer side rotation further drives the piston rod of the telescopic cylinder 32 to move outward. At this time, the rodless chamber pressure of the telescopic cylinder 32 tends to decrease, and the rodless chamber of the telescopic cylinder 32 passes through the one-way throttle valve 33 and the accumulator. The connection of 31 causes the rodless chamber pressure of the telescopic cylinder 32 not to decrease rapidly, preventing the piston rod of the telescopic cylinder 32 from moving outward, thereby reducing the sudden deceleration of the chain 1 to the spreader Impact and vibration formed by the system.

It can be seen from the above working process that the spreader system adopting the above structure can utilize the elastic force of the elastic device 3 to slow down the shock and vibration caused by the sudden acceleration or deceleration of the chain 1 during the process of lifting the block, to the spreader system It plays a certain protective role and prolongs the service life of the chain 1 and enhances the working stability of the stacker.

The elastic device 3 combined with the accumulator 31 and the telescopic cylinder 32 realizes the buffering of the impact of the chain 1 by controlling the oil pressure. Since the hydraulic control has the characteristics of high stability and easy operation, the gas is fully utilized. The compressibility, and by appropriately setting the valve opening size of the one-way throttle valve 33, the precise control of the piston rod movement amount of the telescopic cylinder 32 can be realized, so that the buffer device of the spreader system has the characteristics of high reliability and easy control.

By using the transmission component 2 of the bent structure, the vertical force of the chain 1 can be converted into the horizontal driving force of the elastic device 3 by using the two bent portions arranged vertically, and the connecting rod of the bending structure is the most The single transmission mechanism causes the manufacturing, processing and the like of the transmission member 2 to be single, and further reduces the production cost of the spreader system.

It should be noted that the technical effects of the above-mentioned spreader system are described above by taking only one specific embodiment as an example. In fact, the elastic device 3 is not limited to the interconnected accumulator 31 and the telescopic cylinder 32, and the above-mentioned transmission The component 2 is also not limited to the bent structure, and the spreader system in which the chain 1 is connected to the elastic means 3 through the transmission member 2 and the shock and vibration are alleviated by the elastic force of the elastic means 3 should fall within the protection scope of the present invention.

In addition, the orientation word "outer" appearing in this document refers to the direction in which the vertical center line of the gantry 01 of the stacker diffuses to both sides, that is, the direction from the center to the left and right sides in FIG. 1; "Inside", that is, the direction from the left and right sides to the center in Figure 1; "horizontal" refers to the direction perpendicular to the rise or fall of the spreader, that is, the left and right direction in Figure 1; it should be understood that these position words The occurrences are based on the drawings herein, and their appearance should not affect the scope of protection of the present invention.

It is also possible to further provide a specific structural form of the above elastic means 3 and transmission member 2. Please refer to FIG. 2. FIG. 2 is a schematic structural view of a second specific embodiment of a spreader system for a stacker according to the present invention.

In another specific embodiment, as shown in FIG. 2, the elastic device 3 may also be a spring. With this type of structure, similar to the above work process, the stacker is in the process of lifting the block, When the chain 1 suddenly accelerates or decelerates, the chain 1 applies a certain external force to the transmission member 2, and the transmission member 2 converts the vertical force into a horizontal lateral force, which drives the spring to stretch or compress, and the elastic force causes the movement of the chain 1 to It has a certain damping effect, which plays a role in slowing down shock and vibration. Compared with the elastic device 3 in combination with the accumulator 31 and the telescopic cylinder 32, the elastic force of the spring is limited. Therefore, the elastic device 3 is suitable for a stacker with a small load, and the user can select it according to actual needs.

Regarding the specific structure of the transmission component 2, in another specific embodiment, the transmission component 2 can also be a disk, and the center of the disk is hinged in the vertical plane with the spreader system through the hinge shaft 23, in the circle The peripheral edge of the disk is fixedly connected to the chain 1 by a first point, and the second point is fixedly connected to the elastic device 3, and the radii of the first point and the second point are perpendicular to each other. With this configuration, it is also possible to convert the vertical force of the chain 1 into the horizontal lateral driving force of the elastic device 3, and the disk-shaped transmission member 2 has the characteristics of a structural unit and a convenient manufacturing process. Of course, the above transmission member 2 can also adopt other structures.

Other specific structural forms in the above-described spreader system can be further provided.

In a specific embodiment, the high pressure gas in the accumulator 31 is high pressure nitrogen. Since nitrogen is an inert gas, it does not easily react with the skin of the accumulator 31 after being charged into the accumulator 31, and nitrogen has good flame retardancy and stability, in addition to nitrogen. For the most common gas, it is relatively easy to obtain, and the production cost of the elastic device 3 can be further reduced. Of course, the accumulator 31 can also be filled with other high pressure gas.

Further, the elastic device 3 further includes a shutoff valve 34, and the accumulator 31 is also connected to the hydraulic system of the spreader system via the shutoff valve 34. With this configuration, the amount of oil of the accumulator 31 can be appropriately adjusted to adjust the pressure of the elastic device 3 of the spreader system, which enables the spreader system to perform different amounts for different weights of the pile to be stacked. The mitigation has increased the flexibility to mitigate shocks.

In another embodiment, during the lifting of the stacker, the elastic device 3 is in a pre-compressed state, and a friction block 4 is disposed between the outer side of the elastic device 3 and the frame frame of the stacker. 4 is connected to the elastic device 3.

With this type of structure, as shown in Fig. 1, when the stacker spreader system suddenly occurs and the chain 1 suddenly breaks, the end of the horizontal portion 21 of the connecting rod is not subjected to force, so that the rod chamber pressure of the telescopic cylinder 32 is sharp. Lowering, at this time, the oil in the accumulator 31 is hydraulically returned to the telescopic cylinder 32, pushing the piston rod Move quickly to the right, tighten the friction block 4 against the gantry 01, and the friction block 4 and the gantry frame stop the spreader from falling or reduce to a lower speed, avoiding the safety hazard caused by the fall of the spreader to the operator, greatly enhancing The reliability and safety of the stacker.

It is also possible to further set the number of components in the above spreader system.

In another embodiment, the number of the above-mentioned chains 1 is two, and the two chains 1 are symmetrically disposed on both inner sides of the gantry frame, and each of the chains 1 is connected to the elastic means 3 via the transmission member 2. With this type of structure, the two chains 1 can be hoisted at the same time, the power of the spreader system is enhanced, and the above-mentioned buffering device is provided on both sides, which can further reduce the vibration of the spreader system and the punching of the chain 1. Strike, enhance the reliability and safety of the spreader system. Of course, the above-described spreader system can also employ other numbers of chains 1 and cushioning devices.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is a schematic structural view of a specific embodiment of the stacker provided by the present invention; FIG. 4 is a partial enlarged view of the connection of the buffer device of FIG.

As shown in Figures 3 and 4, the present invention also provides a stacker comprising a gantry 01, a drive system and the above-described spreader system, the chain 1 of the spreader system being coupled to the gantry 01 by a sprocket. Since the above-mentioned spreader system has the above technical effects, the stacker including the spreader system should have the same technical effects, and will not be described herein.

Specifically, the stacker may be a container empty stacker. Of course, this paper only introduces the technical effect of the above-mentioned spreader system by taking the container empty container stacker as an example. In fact, the above spreader system can be applied to a variety of stacker machines, and any stacker including the above spreader system, All should fall within the scope of protection of the present invention.

The above description of a stacker and its spreader system provided by the present invention is described in detail. This description is only intended to aid in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

Rights request

A spreader system for a stacker, comprising a chain (1), the upper end of the chain (1) being connected to a gantry ( 01 ) of the stacker by a sprocket, the chain (1) The lower end is connected to the pile to be piled; and is characterized in that it further comprises an elastic device (3) which is horizontally and horizontally stretchable, and converts the vertical force of the chain (1) into a horizontal driving force of the elastic device (3) a component (2), the chain (1) is connected to the elastic device (3) through the transmission member (2); the elastic device (3) and the transmission member (2) are provided in the pile to be piled Above the block.

The spreader system for a stacker according to claim 1, wherein the elastic device (3) comprises an accumulator (31) and a horizontally and horizontally disposed telescopic cylinder (32), The accumulator (31) is connected to the rodless cavity of the telescopic cylinder (32) through a one-way throttle valve (33), the accumulator (31) is filled with hydraulic oil and high pressure gas, and the chain (1) The piston 4 of the telescopic cylinder (32) is connected dry by the transmission member (2).

3. The spreader system for a stacker according to claim 2, wherein said transmission member (2) is a link having a bent inwardly open structure; said bent structure comprises a horizontal a portion (21) and a vertical portion (22), the end of the horizontal portion (21) being fixedly coupled to the chain (1), the end of the vertical portion (22) and the telescopic cylinder (32) The piston rod is fixedly coupled; and the intersection of the horizontal portion (21) and the vertical portion (22) is hinged in the vertical plane with the spreader system by a hinge shaft (23).

A spreader system for a stacker according to claim 2, characterized in that the high pressure gas in the accumulator (31) is high pressure nitrogen.

5. The spreader system for a stacker according to claim 2, wherein said elastic means (3) further comprises a shut-off valve (34), said accumulator (31) also passing said Shut-off valve

(34) is connected to the hydraulic system of the spreader system.

The spreader system for a stacker according to claim 1, wherein the elastic means (3) is a spring disposed horizontally and laterally, and the transmission member (2) is coupled to the spring Outside.

The spreader system for a stacker according to any one of claims 1 to 6, wherein the elastic device (3) is in a pre-compressed state, and the outer side of the elastic device (3) A friction block (4) is arranged between the frames of the stacker (01) of the stacker, and the friction block (4) is connected to the elastic device (3).

The spreader system for a stacker according to any one of claims 1 to 7, characterized in that the number of the chains (1) is two, and the two chains (1) are symmetrically arranged. On both inner sides of the frame (01) frame, and each of the chains (1) is connected to the elastic device (3) through the transmission member (2).

9. A stacker, comprising a gantry (01); further comprising a spreader system according to any one of claims 1-8, said chain (1) of said spreader system The gantry ( 01 ) is connected.

10. The stacker according to claim 9, characterized in that it is specifically a container empty stacker.