Hoisting device for servicing racks

 

(57) Abstract:

Use: lifting and transport equipment. The inventive stacker crane includes running the truck with columns that has Protopriest, the mechanisms of movement of the truck, lifting gruzopriemnoe and extension telescopic grips, control Cabinet with programmable controller and associated stationary computer. Paired surfaces of the flanges of the vertical drive motor lifting and shells are circular grooves placed in them by the rolling elements and the motor housing is held against rotation fixed on the ring of elastic plates. The axis of the plates and the rotor of the electric motor in parallel. The deformation of the plates is measured by the sensor, an electrical signal which is passed to the block comparison controller. 3 Il.

The invention relates to a lifting-transport equipment, specifically for the design of crane for loading cargoes shelves in a cell and subsequent unloading in warehouses, machinery and other industries. Piece goods can be stored in containers or on pallets.

Known valves, equipped with telescopic lifting ograblenie with other hoisting-and-transport devices significantly increase the utilization volume of the warehouse, however, the conditions of their operation and diagnostics are not fertile.

The closest to the technical nature of the present device is a stacker crane, the design of which includes: chassis truck, which includes columns with vertical guides, a forklift telescopic grips, mounted in the said guides, the mechanisms of movement of the undercarriage, vertical movement of the forklift and horizontal movement of the telescopic gripper and fixture control these mechanisms, including the unit job programmes, made in the form of a stationary computer, which is included in the control circuit of these mechanisms through the controller [2].

The disadvantage of this device lies in the fact that this valve automatically controls the operation of the lifting mechanism is carried out only with the help of the load limiting device in the form of a sensor with an elastic plate, working on the ultimate bending installed at the site of attachment of the cargo chain to the upper beam. When the deflection plate actuates the micro-switch and turns off the engine hoist.

Thus, the device has protection from peregruzka, for example, for the rack.

The lifting mechanism on the conjugate surfaces of the flanges of the vertical motor and shells there are no circular grooves placed in them by the rolling elements and the motor housing is not kept from rotation fixed on the ring of elastic plates, the axis of which is parallel to the axis of the rotor. In this regard, the elastic deformation is not measured by sensors that send a signal to the block comparison of the controller.

The result is:

a) in case of failure or refusal of the elements of the lifting mechanism (clutch, brake, gear, chains, leading to jamming in the kinematic chain of the mechanism, the load limiting device does not work, does not disable the motor;

b) in case of freezing forklift from a hook when lowering the load on the circuits are much smaller than the lower threshold nominal interval and sensor overload - load limiting device - does not disable the motor;

in the absence mounted on the sides of the elastic plate that holds the rotation of the motor housing and playing the role of a damper, it is not possible to reduce the vibration and noise;

g) there is no possibility to accumulate in memory management is anima rise to both boundaries of the interval of admissible values, for example to values of 10% and 90% interval, as well as violations of the boundaries of the interval, effectively producing technical diagnosis of the crane.

The aim of the invention is to increase reliability, improve operating conditions and technical diagnostics.

This is achieved by the fact that in the known crane-stacker, selected as a prototype, the lifting mechanism of the crane is supplied with a cowling covering the connection node of the shafts of the motor and the gearbox and connected to one flange with the flange of the housing is rigidly and the other flange of the motor housing movably, and facing towards each other surfaces of the flanges of the shell and the casing of the motor is made with annular grooves, in which between the said flanges posted by rolling elements on the outer surface of the shell attached are parallel to the axis of the rotor of the electric motor of the elastic plate and the motor housing - stops for contact with the latter, if the device control is supplied with sensors measuring the deformation of an elastic plate made, for example, strain or inductive, the controller is implemented with a block of comparison, to the entrance of Kodama, and unit alarm connected to the memory block stationary computer.

Significant differences and novelty of the invention consist in the fact that in order to increase reliability, improve operating conditions and technical diagnostics, the lifting mechanism of gruzopriemnoe provided with a cowling covering the connection node of the shafts of the motor and the gearbox and connected to one flange with the flange of the housing is rigidly and the other flange of the motor housing movably, and facing towards each other surfaces of the flanges of the shell and the casing of the motor is made with annular grooves

in which between the said flanges posted by rolling elements on the outer surface of the shell attached are parallel to the axis of the rotor of the electric motor of the elastic plate and the motor housing - stops for contact with the latter, if the device control is equipped with sensors measuring the deformation of an elastic plate made, for example, strain or inductive, the controller is implemented with a block comparison, the input of which is connected the above-mentioned sensors, and to output the control circuit of the motor and brake mehanizacija design of hoisting-and-transport devices for shelving allows you to:

a) if unacceptable overloading of the lifting mechanism as a result of breach or failure of elements of this mechanism (clutch, brake, gear, chains, leading to jamming in the kinematic chain mechanism, the controller disconnects the electric motor from the network and includes the alarm;

b) in case of an inadmissible reduction of loads on the lifting mechanism due to the unresponsiveness of the forklift because of the hook as it descends the controller also turns off the motor from the network and includes the alarm;

in) mounted on the sides of the elastic plate, the axis of which is parallel to the axis of the rotor of the motor holding against rotation the last case, play the role of a damper that reduces the dynamic loads, vibration and noise at start-up and braking of the lifting mechanism;

g) accumulating in the memory of the management computer information on cases of approximation of the actual load of the lifting mechanism to both boundaries of the interval of admissible values of, for example, to the values 10% and 90% interval, as well as violations of the boundaries of the interval, which creates conditions for effective technical diagnostics of the crane.

In Fig. 1 shows a device, a General view of Fig.2 - part of the drive of the lifting mechanism g which has a chassis beam 1, moving on the driving wheels 2 and 3 on track 4. Columns 5 and 6 are connected to the upper beam 7. This frame is held in a vertical plane by means of two pairs of side rollers 8, rolling along the guide 9. Similar side rollers, not shown in Fig.1, roll on the lateral surfaces of the rail 4. The drive of the movement mechanism 10 is connected with the leading driving wheel 2 and the drive of the lifting mechanism 11 chains or ropes 12 is connected with the forklift 13, for which columns 5 and 6 serve as guides. The extension mechanism 14 mounted on the forklift 13, is connected with a pull-out telescopic grips-fork 15, which is the load 16. The traveling beam 1 has a control Cabinet 17, which is a programmable controller. Guide 9 is also used for hanging loops power and low voltage cables of the control circuit. The last link stacker crane with the control computer, not shown in the diagram.

In Fig.2 shows a part of the drive of the lifting mechanism 11 forklift 13. Vertically positioned flange motor 18 AC or DC with the help of a flange 19 and bolts 20 (scheme conditionally shows one bol the USA gear 26. The bolts 24 are tightened completely, forming a fixed connection of the flanges 23 and 25. The bolts 20 are tightened completely, allowing the flange 19 of the motor 18 in the process, the latter to rotate at a very small angle relative to the flange 21 of the shell 22. Inside the shell 22 are console shaft of the electric motor 18 and gear 26 connected by a coupling, and a normally closed brake device. Brake and clutch not shown in the figure. On the mating surfaces of the flanges 19 and 21 are arranged in annular grooves 27 and 28, which are rolling elements 29, such as balls. On the ring 22 is fixed to the elastic plate 30 and 31 in contact with the stops 32 and 33 are rigidly connected with the flange 19 of the motor 18. Deformation of the plates 30 and 31 are measured by sensors, such as strain gauges, inductive (not shown). The fastening of the rope 12 to the upper beam 7 is made by means of bracket 34, the clamp 35 and screws 36 (Fig.3).

Lifting and transport device operates as follows. The device is approaching placed on a special table container with a piece of goods, provided the container is advanced telescopic grips 15. Then the load rises to a small height, grips 15 together with the load 16 perimetrium places and during the movement of the undercarriage 1 mechanism 11 raises the load 16 to the level of the desired cells. Transport frame 1 is stopped, the mechanism 14 puts telescopic gripper 15 and the load 16 is introduced into the cell rack. Forklift 13 is lowered by a small amount, the load 16 rests on the shelf of a rack, and a telescopic grip is removed from the rack mechanism 14 in the middle position. Next, the stacker crane can perform the next cycle. The crane, an automatic action is the cell address of the rack is entered into the programmable controller over the communication channel from the control Board.

In the proposed lifting and transport device new design of the lifting mechanism allows you to monitor and record not only overloading of branches of chain (a cable car) transmission 12 in the place of its attachment to the upper beam 7, which takes place in the famous cranes-trucks with load limiters, but also provides an opportunity to monitor the health (status) of the elements of the kinematic chain of the lifting mechanism from the engine 8 to the place of attachment of ropes (traction) circuits 12 to the upper beam 7.

The opportunity at unacceptably small or excessively large load on the lifting mechanism of slathenia 13 racks, the corresponding electrical signals of the sensors measuring the elastic deformation of the plates 30 and 31, to evaluate the block comparison with the programmable controller and to automatically generate a command to disconnect from the network of the electric motor 18 and enable alarms. If necessary to avoid inadvertent drop 16 forklift 13 is fixed known mechanical device - catching. In addition, the elastic plates 30 and 31 align, mitigate fluctuations in reactive power torque on the motor housing 18 and connected with it the shell 22 and the gear 26, which significantly reduces vibration and noise, improves the reliability and durability of the valve. In memory of the management computer can be fixed emergency and crane work in high-risk conditions, when the load on the lifting mechanism will have numerical values that are in the areas of risk, for example, from 0 to 10% and 90 to 100% of the width of the range of admissible values of loads.

HOISTING DEVICE FOR MAINTENANCE of RACKS containing driving cart on which are mounted columns with vertical guides, a forklift telescopic grips, ustanovlennya and horizontal moving platforms telescopic gripper and fixture control these mechanisms, includes unit job programmes, made in the form of a stationary computer, which is included in the control circuit of these mechanisms through the controller, wherein the lifting mechanism of the forklift is equipped with a shell with flanges covering the connection node of the shafts of the motor and the gearbox and connected to one flange with the flange of the housing is rigidly and the other flange of the housing of the electric motor adjustably directed one toward the other surface of the flanges of the shell and the casing of the motor is made with annular grooves in which are placed between the flanges of the rolling elements on the outer surface of the shell attached are parallel to the axis of the rotor of the electric motor of the elastic plate, and in the case of motor - stops for contact with the latter, if the device control is equipped with sensors measuring the deformation of the elastic plates executed strain or inductive, the controller is implemented with a block comparison, the input of which is connected the above-mentioned sensors, and to output the control circuit of the motor and the brake of the hoisting mechanism, and unit alarm connected to the memory block stationary computer.

 

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