Traction type variable counterweight energy-saving technology

Abstract

A traction type variable balance weight energy-saving technology is introduced into a vertical avoiding scheme, in the specific structure, on the lifting side, four telescopic devices are arranged on a transverse bottom beam, lifting holes penetrating from top to bottom (allowing a lifting rod to penetrate through) are formed in the transverse middle positions of all middle parking frames, and a weighing sensor, the lifting rod and a (retractable) lifting hook are additionally arranged on a top-layer parking frame; the counterweight side is provided with a counterweight guide column, a forced leveling device, a counterweight block, a bottom-layer counterweight block and a buffer pad. The weight needing to be lifted is weighed before lifting each time, the system calculates the number of balance weights according to the weight needing to be lifted, then the number of the balance weights is released by controlling the forced leveling device, the difference between the weight needing to be lifted and the weight of the balance weight side is made to be minimum, namely the difference does not exceed the weight of one balance weight, and at the moment, the balance weights need to be lifted. And the extension power of the traction machine is reduced, so that the aim of saving energy is fulfilled.

Description

TECHNICAL FIELD

[0001] The present application relates to a type of energy-saving technology for variable weight traction. BACKGROUND

[0002] There is a vertical avoidance method used in a mechanical stereo parking garage, which greatly improves the vehicle volume rate and vehicle efficiency of the parking garage, but the core technology - vertical avoidance needs to consume a large amount of electric energy to achieve, such as Figure 1 As shown in the figure, it is a parking unit in a seven-story stereo parking garage, when a layer has a vehicle carrying trolley (the parking board is raised) passing through, if the layer has a vehicle, the layer and the upper layer must be raised by a distance of one layer height to let the trolley pass through, if the layer has no vehicle, the trolley can pass directly without raising.

[0003] As can be seen from Figure 1 , the minimum lifting weight is the weight of the vehicle and the weight of the top parking frame, the maximum lifting weight is when all seven layers have vehicles, the bottom layer must be avoided, and all must be raised, the intermediate lifting weight is between the two. If the traditional simple lifting method is used, whether it is a hoist or a hydraulic lift, a large amount of electric energy must be consumed, so the use of this technology is also limited.

[0004] The present application is an energy-saving solution to the above problems, which adopts a variable weight traction method, and uses the characteristics of the traction machine working method to assist the variable weight method to achieve the purpose of energy saving. SUMMARY

[0005] The working method of the traditional traction machine is to rely on the friction force of the traction wheel rope groove to lift the goods (such as elevator), and the weight of the counterweight is fixed. The counterweight of a general freight elevator is set as: total weight of counterweight = weight of car + half of rated load + balance coefficient (usually 0.45) * rated load. It can be roughly seen that the total weight of the counterweight is approximately equal to the rated load, that is, the total weight of the counterweight is approximately equal to the rated load, and in operation, the smaller the weight on the lifting side, the more energy is consumed (when the lifting side is lowered to recover).

[0006] The vertical avoidance principle is shown in Figure 1 Figure 1 ​The unit is one unit in a column in a multi-layer and multi-column mechanical stereoscopic parking garage, parking frames in the unit are arranged in pairs of symmetry, the parking frames are naturally stacked through guide plates of the parking frames, the weight of the parking frames of all layers falls on the extension tongues of the extension devices on the transverse bottom beams through the guide plates of the lowermost parking frames, and then falls on the vertical columns through the bottom beams. The same units are connected in front of and behind each other according to the driving direction (transverse direction) of the vehicles, the tracks on the same layer parking frames in adjacent units are connected through the tracks on the longitudinal track-containing connecting beams, to form continuous tracks for the driving of the transport trolleys, when the transport trolley (the parking plate is raised) carrying the vehicle needs to drive transversely through the adjacent unit, if there is no vehicle parked on the parking frame of the unit, the side transport trolley directly passes through, if there is a vehicle, the parking frame of the layer and the parking frames above the layer need to be raised by a layer of height to avoid the transport vehicle, after the transport vehicle passes, the parking frame of the layer and the parking frames above the layer fall down to restore the original state, to complete a lifting action.

[0007] The application introduces a traction type variable counterweight energy-saving technology in the vertical avoidance scheme, and the specific structure is that four extension devices are arranged on the transverse bottom beam on the lifting side; lifting holes are formed in the transverse middle positions of all the middle parking frames and penetrate from top to bottom (for the passing of lifting rods); a weighing sensor, a lifting rod and a (retractable) lifting hook are added to the top layer parking frame; a counterweight guide column, a forced leveling device, counterweight blocks, a bottom layer counterweight block and a buffer pad are arranged on the counterweight side. The weight to be lifted is weighed before each lifting, the system calculates the weight of how many counterweights that is most similar to the weight to be lifted, and then controls the forced leveling device to release the number of counterweight blocks, so that the weight difference between the weight to be lifted and the weight on the counterweight side is minimized, that is, does not exceed the weight of one counterweight block, at this time, the extension power of the traction machine is smaller, thereby achieving the purpose of energy saving.

[0008] In the case of seven parking layers, the minimum lifting weight is the weight of the vehicle and the weight of the top layer parking frame, and the counterweight is set as follows: if the rated load is 1600*7=11200kg, the bottom layer counterweight block is 1600kg, and the weight of each of the remaining 26 side blocks is= (11200-1600) / 26 about 370kg, then the weight difference between the two sides of the traction wheel in the completion of each vertical avoidance action does not exceed 370kg, and the energy consumption is mgh, where g (gravitational acceleration 9.8m / s 2 ), h is the lifting height, and both are constants. It can be seen that the energy consumption is directly linearly related to the weight difference between the two sides of the traction wheel. If the number of the remaining counterweight blocks is set to 30, the weight difference between the two sides of the traction wheel in the completion of each vertical avoidance action does not exceed 320kg.

[0009] The application has the following beneficial effects: 1. stable operation, reliability and energy saving; 2. Safety: Because of the use of traction, the system operation safety is greatly improved. No matter which direction control appears problems, the traction wheel and the wire rope will only slip, and no other problems will appear. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic diagram of a unit in a column in the vertical avoidance stereoscopic parking garage.

[0011] Figure 2 is a schematic diagram of the upper structure of the unit.

[0012] Figure 3 is a schematic diagram of the lower structure of the unit.

[0013] Figure 4 is a schematic diagram of the steel frame and the parking frame of the unit.

[0014] Figure 5 is a schematic diagram of the back of the unit.

[0015] Figure 6 is a schematic diagram of the upper structure of the back of the unit.

[0016] Figure 7 is a schematic diagram of the lower structure of the back of the unit.

[0017] Figure 8 is a schematic diagram of the intermediate parking frame structure.

[0018] Figure 9 is a schematic diagram of the top layer parking frame structure.

[0019] Figure 10 is a schematic diagram of the top layer parking frame structure.

[0020] Figure 11 is a schematic diagram of the counterweight.

[0021] Figure 12 is a schematic diagram of the bottom layer counterweight.

[0022] Figure 13 is a schematic diagram of the forced leveling device.

[0023] Figure 14 is a schematic diagram of the telescopic device structure.

[0024] wherein, Figure 4 the partial enlarged view A in FIG. 7 shows that the track on the longitudinal connecting beam is level with the track on the intermediate parking frame when the telescopic device is in the intermediate position.

[0025] Figure 4 the partial enlarged view B in FIG. 7 shows the natural stacking of the guide plates of two parking frames in the vertical direction.

[0026] Figure 4Figure 21 is a close-up view C of Figure 20 showing the retraction tongue of the retraction device on which the guide plate of the lowermost parking frame falls.

[0027] 1 - steel frame, 2 - intermediate parking frame, 3 - top parking frame, 4 - traction machine, 5 - counterweight system; 11 - steel upright, 12 - bottom fixed track, 13 - parking frame guide rail, 14 - longitudinal track-containing connecting beam, 15 - side scissors brace, 16 - transverse bottom beam, 17 - retraction device (with three working modes, 1 - high position, 2 - intermediate position, 3 - low position), 171 - (fixedly installed) base, 172 - retraction tongue; 21 - guide plate, 22 - comb tooth parking plate, 23 - track, 24 - lifting hole; 31 - weighing sensor, 32 - comb tooth parking plate, 33 - guide plate, 34 - lifting rod, 35 - (retractable) lifting hook; 4 - traction machine; 51 - counterweight guide column, 52 - forced levelling device, 521 - forced levelling device fixing sleeve, 522 - retraction tongue, 53 - counterweight block, 531 - (horn-shaped mouth) forced levelling female seat, 532 - counterweight block body, 533 - through hole, 54 - bottom layer counterweight block, 541 - counterweight block body, 542 - (horn-shaped mouth) forced levelling female seat, 543 - counterweight connecting rod, 55 - buffer pad. DETAILED DESCRIPTION

[0028] Initial state, all the telescopic tongues 522 of the forced levelling devices 52 are extended and forcedly inserted into the forced levelling female sockets 531, 542 on the counterweights 53, 54, all the counterweights 53, 54 are in the locked state, the telescopic tongues 172 of the four telescopic devices 17 at the bottom are in the middle position, at this time, the rails on the longitudinal rail-containing connecting beams 14 are level with the rails 23 on the intermediate parking frames 2, all the intermediate parking frames 2 and the top parking frames 3 are in the free-fall state, their weight naturally falls on the horizontal bottom beams 16 through the guide plates 21 of the parking frames 2 and the telescopic tongues 172 of the telescopic devices 17, all the lifting hooks 35 on the lifting rods 34 are in the stowed state, when the system needs to lift a certain layer, the telescopic tongues 172 of the telescopic devices 17 are extended to the high position, lifting all the intermediate parking frames 2, 3 by a small distance (so that the lifting hooks 35 can be freely stowed and released), after the lifting hooks 35 on the lifting rods 34 are released and opened, the telescopic tongues 172 of the telescopic devices 17 are lowered to the low position (so that the guide plates 21 on the parking frames 2 of the layer to be lifted are out of contact with the guide plates 21 on the lower parking frames), at this time, the opened lifting hooks 35 on the lifting rods 34 hook the comb-shaped parking plates 22 of the parking frames 2 of the layer to be lifted and the layers above, the weighing sensors 31 on the top parking frames 3 work, the weight of the layer to be lifted is weighed, then the telescopic tongues 172 of the telescopic devices 17 return to the middle position, at this time, the guide plates 21 of the parking frames 2 of the layer to be lifted are in contact with the guide plates 21 of the lower parking frames 2, the system calculates the number of counterweights 53 to be released according to the weight data from the weighing sensors 31, then the telescopic tongues 522 of the forced levelling devices 52 are retracted to release the counterweights 53, after that, the traction machine 4 is started, the parking frames 2, 3 are lifted by one layer of height and then stopped, after the transport trolley (parking plate) carrying the vehicle passes through, the traction machine 4 is reversed, the parking frames 2, 3 on the lifting side are lowered to the original state, then the telescopic tongues 522 of the forced levelling devices 52 are extended and forcedly inserted into the forced levelling female sockets 531, 542 on the counterweights 53, 54, the telescopic tongues 172 of the telescopic devices 17 are extended to the high position, all the lifting hooks 35 are stowed, then the telescopic devices 17 are lowered to the middle position, and one vertical avoidance action is completed.

[0029] The preferred embodiments of the present application have been described above by way of example only, without limitation, and alterations and changes can be made by one skilled in the art without departing from the spirit and principles of the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall fall within the scope of the present application.

Claims

1. The present invention provides a variable mass energy-saving technology for traction, characterized in that, The traction type variable counterweight energy-saving technology comprises a lifting side 1 and a counterweight side 2.

2. A variable mass energy-saving technology for traction elevators according to claim 1, characterized in that, The lifting side 1 comprises telescopic devices 17, intermediate parking frames 2 and top parking frames 3.

3. A variable mass energy-saving technology for traction elevators according to claim 2, characterized in that, The telescopic devices 17 comprise fixed bases 171 fixedly installed on transverse bottom beams 16 and telescopic tongues 172.

4. A variable mass energy saving technology for traction elevator according to claim 2, characterized in that, The intermediate parking frames 2 are provided with lifting holes 24 penetrating from top to bottom at the transverse middle positions.

5. A variable mass energy saving technology for traction elevator according to claim 2, wherein, The top parking frames 3 comprise weighing sensors 31, lifting rods 34 and lifting hooks 35.

6. A variable mass energy saving technology for traction elevator as claimed in claim 1 wherein, The counterweight side 2 comprises counterweight guide columns 51, forced levelling devices 52 fixedly installed on the guide columns 51, counterweight blocks 53 constrained by the guide columns 51, bottom counterweight blocks 54 constrained by the guide columns 51 and buffer pads 55.

7. A variable mass energy saving technology for traction elevator according to claim 6, characterized in that The forced levelling devices 52 comprise forced levelling device fixing sleeves 521 and telescopic tongues 522.

8. A variable mass energy saving technology for traction elevator according to claim 6, characterized in that The counterweight blocks 54 comprise forced levelling female seats 531, counterweight block bodies 532 and penetrating holes 533.

9. A variable mass energy saving technology for traction elevator according to claim 6, characterized in that The bottom counterweight blocks 55 comprise bottom counterweight block bodies 541, forced levelling female seats 542 and counterweight connecting rods 543.

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