CN112723121A

CN112723121A - Elevator counterweight system

Info

Publication number: CN112723121A
Application number: CN202011636116.6A
Authority: CN
Inventors: 郑庆辉; 丁建新; 王振宇; 刘福彬
Original assignee: Suzhou Duomeishi Household Elevator Co ltd
Current assignee: Suzhou Duomeishi Household Elevator Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-30
Anticipated expiration: 2040-12-31
Also published as: CN112723121B

Abstract

The invention discloses an elevator counterweight system, which comprises a load monitoring part arranged at the bottom of an elevator car and a balancing part used for balancing the load amount of the elevator car, wherein the balancing part comprises a movable counterweight frame. This scheme includes load control portion, control terminal, balancing unit. When the elevator is used, the balance part is defaulted in the elevator car, when the load of the elevator car is detected to be greater than the rated load, the load monitoring part can control the balance part to be folded and exit the elevator car, so that the load of the elevator is smaller than the rated load, and when the elevator finishes operation and returns to the floor where the balance part is located, the balance system automatically returns to the elevator car and is opened.

Description

Elevator counterweight system

Technical Field

The invention belongs to the field of elevator equipment, and particularly relates to an elevator counterweight system.

Background

At present, in order to reduce the general balance coefficient of an elevator to be 40% -50%, the energy of 0% -60% of rated load needs to be output when the elevator operates normally, and the energy consumption is the largest when the elevator is unloaded and fully loaded. When an actual elevator is used, the full load condition basically does not occur unless extreme conditions are met, especially for a large-load elevator, most of energy consumption of the elevator is to ensure that the elevator runs but not transports people and goods, generally, for an elevator with low use frequency, almost half of the elevator is unloaded, the load weight of the elevator under other most of conditions is less than 50% of the rated load weight, even if the elevator with high use frequency is used, the device weight of the elevator is less than 50% of the rated load weight under most of conditions, so that the elevator efficiency is low, the power is high during running, and impact is generated on a power grid. The energy consumption of the elevator is far more than the potential energy added by the personnel and the goods elevator.

Disclosure of Invention

The invention aims to provide an elevator counterweight system which is used for reducing the energy consumption and the maximum power of an elevator in normal use, improving the efficiency of the elevator and reducing the maximum load on a power grid.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an elevator counter weight system, it is including installing the load control portion at the sedan-chair bottom of elevator, and it still includes the balancing unit that is used for balancing elevator car load volume, the balancing unit includes mobilizable counterweight housing.

Preferably, the counterweight frame comprises side frames arranged in parallel and a cross beam connected between the side frames, the height of the side frames can be adjusted, and the length of the cross beam can be adjusted.

Preferably, the side bearer comprises upright columns and longitudinal beams connected between the upright columns, each upright column comprises an inner side column body and an outer side column body sleeved on the inner side column body, and a first hydraulic cylinder used for adjusting the relative position of the inner side column body and the outer side column body, and the first hydraulic cylinder is arranged in the outer side column body.

Optimally, a counterweight cavity is formed in the inner side column body, and counterweight liquid for adjusting the counterweight is injected into the counterweight cavity.

Optimized, the crossbeam includes the outer tube, wears to locate respectively interior sleeve pipe in the outer tube both ends, locate in the outer tube be used for the drive interior sleeve pipe is to the inboard second pneumatic cylinder that or the outside removed of outer tube, the second pneumatic cylinder is the dual-action hydro-cylinder just two piston rods of second pneumatic cylinder are connected with two interior sleeve pipes respectively.

Preferably, a first wheel assembly and a second wheel assembly are arranged below the side frames, wherein the first wheel assembly and the second wheel assembly are respectively used for controlling the side frames to move towards or away from each other and controlling the side frames to move out of or enter the elevator car.

Preferably, the system further comprises a control terminal connected with the load monitoring part and the weight rack in a wired or wireless mode.

The invention has the beneficial effects that: this scheme includes load control portion, control terminal, balancing unit. When the elevator is used, the balance part is defaulted in the elevator car, when the load of the elevator car is detected to be greater than the rated load, the load monitoring part can control the balance part to be folded and exit the elevator car, so that the load of the elevator is smaller than the rated load, and when the elevator finishes operation and returns to the floor where the balance part is located, the balance system automatically returns to the elevator car and is opened. When the foreseeable load is larger than the rated load of the car and the weight of the balance system is reduced, the balance part can be controlled by the control terminal (through remote manual setting or linkage of a weighing device at an elevator entrance) to be folded and withdrawn from the car in advance, the service efficiency of the elevator is improved, the balance part can adopt a manual control mode, and the balance part can be manually operated to enter and exit the car or be unfolded.

Drawings

FIG. 1 is a schematic view of the system of the present invention in positional relationship to a car;

FIG. 2 is a front view of the system;

FIG. 3 is a top view of the system in an open state;

fig. 4 is a top view of the system in a collapsed state.

Detailed Description

The invention is described in detail below with reference to embodiments shown in the drawings to which:

as shown in fig. 1 to 4, the elevator counterweight system includes a load monitoring part installed at the bottom of an elevator, a balancing part for balancing the load amount of an elevator car 0, and the balancing part includes a movable weight frame 1. The counterweight frame 1 comprises side frames 11 arranged in parallel and a cross beam 12 connected between the side frames 11, the height of each side frame 11 can be adjusted, and the length of the cross beam 12 can be adjusted. The side frame 11 includes vertical columns 13 and longitudinal beams 14 connected between the vertical columns 13, each of the vertical columns 13 includes an inner column 131, an outer column 132 sleeved on the inner column 131, and a first hydraulic cylinder 133 for adjusting the relative position between the inner column 131 and the outer column 132, and the first hydraulic cylinder 133 is disposed in the outer column 132. A counterweight cavity is formed in the inner side column body 131, and counterweight liquid for adjusting a counterweight is injected into the counterweight cavity. The beam 12 includes an outer tube 121, inner tubes 122 respectively inserted into two ends of the outer tube 121, and a second hydraulic cylinder 123 disposed in the outer tube 121 and used for driving the inner tubes 122 to move toward the inner side or the outer side of the outer tube 121, wherein the second hydraulic cylinder 123 is a dual-acting cylinder, and two piston rods of the second hydraulic cylinder 123 are respectively connected to the two inner tubes 122. The oil supply unit 4 of the first and second hydraulic cylinders 123 is mounted above the side member 14. A first wheel assembly 2 for controlling the side frames 11 to move towards or away from each other and a second wheel assembly 3 for controlling the side frames 11 to move out of or into the elevator car are arranged below the side frames 11 respectively. The system also comprises a control terminal which is connected with the load monitoring part and the counterweight frame 1 through wires or wireless connection, and the load monitoring part can be a weight sensor for a car bottom flat layer.

This scheme includes load control portion, control terminal, balancing unit. When the elevator is used, the default balancing part is in the elevator car, when the situation that the load of the elevator car is larger than the rated load is detected, the load monitoring part can control the second wheel assembly 3 to move upwards for packing, the first wheel assembly 2 drives the balancing part to fold, then the second wheel assembly 3 moves downwards, then the first wheel assembly 2 moves upwards, the second wheel assembly 3 drives the system to withdraw from the elevator car, the load of the elevator is smaller than the rated load, and when the elevator runs and returns to the floor where the balancing part is located, the balancing system automatically returns to the elevator car and is opened. When the foreseeable load is larger than the rated load of the car and the weight of the balance system is reduced, the balance part can be controlled by the control terminal (through remote manual setting or linkage of a weighing device at an elevator entrance) to be folded and withdrawn from the car in advance, the service efficiency of the elevator is improved, the balance part can adopt a manual control mode, and the balance part can be manually operated to enter and exit the car or be unfolded.

For example, 20 tons of goods elevator with gears and 0.5m/s has the power of a tractor of 110kW and the rated current of 195A. When the balance coefficient is 45%, the no-load downlink average current is 160A, the maximum current is 240A, the full-load uplink average current is 195A, and the maximum current is 292.5A. According to the statistics at present, more than 95% of the situations of the elevator are used at 50% of rated load and below, the average current and the maximum current when the elevator is used can be reduced by 1/3, the load of a power grid is greatly reduced, meanwhile, the electricity is saved by at least half degree every 1 minute in average, and the electricity is saved by at least 5 ten thousand degrees calculated according to 10 ten thousand times of use in one year. The detailed data are shown in table 1 and table 2.

TABLE 1

TABLE 2

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an elevator counter weight system, it is including installing the load control portion at the sedan-chair bottom of elevator, its characterized in that: it also includes the balancing part that is used for balancing elevator car load amount, balancing part includes mobilizable counter weight frame.

2. The elevator counterweight system of claim 1, wherein: the counterweight frame comprises side frames arranged in parallel and a cross beam connected between the side frames, the height of the side frames can be adjusted, and the length of the cross beam can be adjusted.

3. The elevator counterweight system of claim 2, wherein: the side frame comprises upright columns and longitudinal beams connected between the upright columns, each upright column comprises an inner side column body, an outer side column body sleeved on the inner side column body, and a first hydraulic cylinder used for adjusting the relative position of the inner side column body and the outer side column body, and the first hydraulic cylinder is arranged in the outer side column body.

4. The elevator counterweight system of claim 3, wherein: a counterweight cavity is formed in the inner side column body, and counterweight liquid used for adjusting a counterweight is injected into the counterweight cavity.

5. The elevator counterweight system of claim 2, wherein: the crossbeam includes the outer tube, wears to locate respectively interior sleeve pipe in the outer tube both ends, locate in the outer tube be used for the drive interior sleeve pipe is to the inboard second pneumatic cylinder that or the outside removed of outer tube, the second pneumatic cylinder is the dual-action hydro-cylinder just two piston rods of second pneumatic cylinder are connected with two interior sleeves respectively.

6. The elevator counterweight system of claim 2, wherein: and a first wheel assembly and a second wheel assembly are arranged below the side frames, and are respectively used for controlling the side frames to move towards or away from each other and controlling the side frames to move out of or into the elevator car.

7. The elevator counterweight system of claim 1, wherein: the system also comprises a control terminal which is connected with the load monitoring part and the counterweight frame in a wired or wireless way.