CN112027857A

CN112027857A - Self-balancing elevator traction system

Info

Publication number: CN112027857A
Application number: CN202010795989.5A
Authority: CN
Inventors: 冯燕兵
Original assignee: Individual
Current assignee: Chongqing Huachuang Elevator Parts Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2020-12-04
Anticipated expiration: 2040-08-10
Also published as: CN112027857B

Abstract

The invention relates to the technical field of elevator equipment, and discloses a self-balancing elevator traction system which comprises an elevator car, a guide frame, a traction roller and a counterweight, wherein the elevator car and the counterweight are in sliding connection with the guide frame, and the elevator car and the counterweight are respectively positioned on two sides of the traction roller. This elevator system of towing of self-balancing, through the weight of the water tank of losing weight of communicating pipe distribution and the water tank of gaining weight in the middle of, the load change in the balanced elevator sedan-chair, make the weight difference of tow roller both sides be in a less scope, reduce tow roller pivoted drive power requirement, the torque requirement of motor in the tow roller has also been reduced simultaneously, reduce equipment cost, secondly, because the elevator operation, the weight difference of tow roller both sides is in less scope all the time, when the elevator is out of control, the effort is less, the acceleration that obtains is less, the speed of falling to the ground of elevator sedan-chair has finally been reduced, and when the elevator falls, the removal of load board can play the effect of buffering.

Description

Self-balancing elevator traction system

Technical Field

The invention relates to the technical field of elevator equipment, in particular to a self-balancing elevator traction system.

Background

Referring to fig. 6, the elevator includes a car, a counterweight, a traction system, a guiding system, and the like, where the counterweight and the car are respectively located at two sides of the traction system, so that the resultant force applied to the traction system is small, on one hand, the requirement for driving force of the traction system is reduced, and energy consumption is reduced, and on the other hand, when the elevator is unbalanced, the gravity difference is small, and the destructive force when the elevator falls to the bottom or rushes to the top is small, so that personnel and property loss is reduced.

Because the mass of the counterweight is fixed, and the mass of the elevator is changed along with the change of the load or people, the counterweight and the car still have large mass difference, generally, the mass of the counterweight is the sum of the mass of the elevator car and the mass of about 50 percent of rated load, namely, when the elevator is fully loaded or unloaded, the mass difference of about 50 percent of rated load exists between the counterweight and the car, and a large improvement space still exists.

Secondly, although the security level of present elevator is higher and higher, and the probability of meeting accident is littleer and smaller, because the difference of the management in each place and the maintenance level, the unexpected accident of elevator takes place occasionally, especially the emergence that falls can produce great personnel and property loss, and it has great meaning to improve the protection level when the elevator accident takes place.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a technical scheme of a self-balancing elevator traction system, which reduces the requirement of the driving force of an elevator, reduces the overall energy consumption of the elevator, provides better anti-falling protection and solves the problems provided by the background technology by naturally balancing the gravity on two sides of a traction roller.

The invention provides the following technical scheme: the utility model provides a self-balancing elevator traction system, includes elevator sedan-chair, leading truck, tows roller and counterweight, the elevator sedan-chair with counterweight all with and leading truck sliding connection, the elevator sedan-chair with counterweight is located the both sides of towing the roller respectively, the lower extreme of elevator sedan-chair is equipped with subtracts heavy water tank, the lower extreme to counterweight is equipped with the weight water tank, the weight water tank passes through communicating pipe and subtracts heavy water tank intercommunication, the bottom of elevator sedan-chair is equipped with the load board, the inside swing joint who subtracts heavy water tank has first piston, the load board runs through the bottom and the first piston fixed connection of elevator sedan-chair through the spliced pole, be equipped with the spring on first piston or the load board, it is equipped with pressure differential balance spare in the water tank to increase weight.

Preferably, the pressure difference balancing piece comprises a second piston which is assembled and can slide up and down in the weight increasing water tank, a first permanent magnet is fixedly installed on the upper end face of the second piston, a first electromagnet is fixedly installed above the first permanent magnet, the current direction and the current size of the first electromagnet change along with the change of floors, and a vent hole is formed in a cavity between the first permanent magnet and the first electromagnet.

Preferably, the vertical movement range of the elevator car is larger than the movement range of the counterweight.

Preferably, the side walls of the weight reducing water tank and the weight increasing water tank are provided with pressure reducing valves.

Preferably, the communicating pipe is a hose, two ends of the communicating pipe are respectively and fixedly connected to the weight reduction water tank and the weight gain water tank through connectors, the two connectors are respectively located on two sides of the elevator, and the middle of the communicating pipe is provided with a bent pipe.

Preferably, the communicating pipe is a steel pipe fixedly mounted on the guide frame, the connector comprises a fixed connecting seat mounted on the weight reduction water tank or the weight gain water tank and a movable connecting seat mounted on the communicating pipe, the movable connecting seat is movably connected with a sealing sleeve through a telescopic pipe, a cut-off valve with an ejector rod is arranged inside the sealing sleeve and the connecting pipe of the fixed connecting seat, a second permanent magnet is arranged on the periphery of the connecting pipe of the fixed connecting seat, and a second electromagnet is arranged at the tail end of the sealing sleeve.

The invention has the following beneficial effects:

1. the self-balancing elevator traction system distributes the weight of water in the weight reduction water tank and the weight gain water tank through the communicating pipes, balances the load change in the elevator car, enables the gravity difference at two sides of the traction roller to be in a smaller range, reduces the requirement of the driving force of the rotation of the traction roller, reduces the energy consumption of the operation of the elevator, reduces the requirement of the torque of a motor in the traction roller and reduces the equipment cost.

2. This elevator system of towing of self-balancing because the elevator operation, the weight difference of tow roller both sides is in less scope all the time, and when the elevator was out of control, the effort was less, and the acceleration of obtaining is less, has finally reduced the speed of falling to the ground of elevator sedan-chair, and secondly, when the elevator falls, the removal of load board can play the effect of buffering, can convert partial kinetic energy into the efflux release when the buffering simultaneously, the injury that receives when further reducing falls.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a perspective view of the structure of the present invention;

FIG. 3 is a schematic structural view of a pressure difference equalizing member according to the present invention;

FIG. 4 is a schematic view of a connection structure of the communication pipe according to the present invention;

FIG. 5 is a schematic structural diagram of a connector according to the present invention;

fig. 6 is a schematic view of a conventional elevator structure.

In the figure: 1. an elevator car; 2. a guide frame; 3. a traction roller; 4. aligning the heavy parts; 5. a weight reduction water tank; 6. a weight increasing water tank; 7. a communicating pipe; 8. a first piston; 9. a load board; 10. a spring; 11. a differential pressure balance member; 111. a second piston; 112. a first permanent magnet; 113. a first electromagnet; 114. a vent hole; 12. a connector; 121. fixing the connecting seat; 122. a movable connecting seat; 123. a telescopic pipe; 124. a shut-off valve; 125. a top rod; 126. sealing the sleeve; 127. a second permanent magnet; 128. a second electromagnet; 13. and (5) bending the pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-2, which is a simplified diagram of a single elevator, a self-balancing elevator traction system comprises an elevator car 1, a guide frame 2, a traction roller 3 and a counterweight 4, wherein the elevator car 1 and the counterweight 4 are slidably connected with the guide frame 2, the elevator car 1 and the counterweight 4 are respectively positioned at two sides of the traction roller 3, friction generated by rotation of the traction roller 3 controls the elevator car 1 and the counterweight 4 to move up and down, a weight reduction water tank 5 is arranged at the lower end of the elevator car 1, a weight increase water tank 6 is arranged at the lower end of the counterweight 4, the weight increase water tank 6 is communicated with the weight reduction water tank 5 through a communicating pipe 7, deionized water is filled in the weight reduction water tank 5 and the weight increase water tank 6, water flows into the weight reduction water tank 5 or the weight increase water tank 6, the weight difference at two sides of the traction roller 3 is changed to balance the weight, the masses of the elevator car 1 and the counterweight 4 are the same, and when the elevator car 1 is in no-load, all the water, and as the mass of the elevator car 1 increases the water of half the mass of the increasing load is transferred into the weighting water tank 6, the elevator car weight balancing device comprises a balance device and a weight balancing device, wherein the weight of two sides is balanced, a load plate 9 is arranged at the bottom of an elevator car 1, a first piston 8 is movably connected inside a weight reducing water tank 5, the load plate 9 penetrates through the bottom of the elevator car 1 through a connecting column and is fixedly connected with the first piston 8, the first piston 8 and the inner wall of the elevator car 1 form a seal, a spring 10 is arranged on the first piston 8 or the load plate 9, the first piston 8 is driven to move along with the increase of the load in the elevator car 1, the amount of water distributed in the weight increasing water tank 6 and the weight reducing water tank 5 is changed, the weight of two sides is balanced, a pressure difference balancing piece 11 is arranged in the weight increasing water tank 6, the pressure of the water in the weight increasing water tank 6 is changed through air pressure, the hydraulic pressure of the weight reducing water tank 5.

Referring to fig. 3, the pressure difference balancer 11 includes a second piston 111 that is assembled and can slide up and down inside the weighted water tank 6, a first permanent magnet 112 is fixedly installed on an upper end surface of the second piston 111, a first electromagnet 113 is fixedly installed above the first permanent magnet 112, a current direction and a current magnitude of the first electromagnet 113 change with a change of a floor, magnetic fields with different directions and strengths are generated, the second piston 111 is driven to move down or up, pressure of liquid below the second piston 111 is changed, hydraulic pressure change generated due to a height difference between the weight reduction water tank 5 and the weighted water tank 6 is balanced, and a vent hole 114 is formed in a cavity between the first permanent magnet 112 and the first electromagnet 133, so that pressure change caused by gas compression is avoided.

Wherein, the up-down moving range of the elevator car 1 is larger than the moving range of the counterweight 4, namely, the elevator car 1 and the counterweight 4 which are positioned in the same elevator shaft are aligned, the upper side and the lower side of the counterweight 4 are provided with limit structures, so that when the elevator is in failure, the counterweight 4 collides and buffers in advance,

wherein, the lateral wall that subtracts heavy water tank 5 and weight gain water tank 6 all is equipped with the relief pressure valve, and when elevator sedan-chair 1 falls, the high pressure that instantaneous collision produced dashes open the relief pressure valve, converts kinetic energy into the efflux, slows down the impact force when falling to the ground.

Please refer to fig. 4, wherein the communicating pipe 7 is a flexible pipe, two ends of the communicating pipe 7 are respectively and fixedly connected to the weight reduction water tank 5 and the weight increase water tank 6 through connectors 12, and the two connectors 12 are respectively located at two sides of the elevator, and the middle part of the communicating pipe 7 is provided with an elbow 13, so as to avoid overweight and over-folding of the communicating pipe 7, and the elevator is suitable for being used on less floors.

Example two

Referring to fig. 5, the difference from the first embodiment is that the connection pipe 7 is a steel pipe fixedly installed on the guide frame 2, the connection head 12 includes a fixed connection seat 121 installed on the weight-reducing water tank 5 or the weight-increasing water tank 6 and a movable connection seat 122 installed on the connection pipe 7, each joint is correspondingly provided with the fixed connection seat 121 corresponding to the weight-reducing water tank 5 and the weight-increasing water tank 6, the movable connection seat 122 is movably connected with a sealing sleeve 126 through a telescopic pipe 123, a cut-off valve 124 with a push rod 125 is arranged inside a connection pipe between the sealing sleeve 126 and the fixed connection seat 121, a second permanent magnet 127 is arranged on the periphery of the connection pipe of the fixed connection seat 121, a second electromagnet 128 is arranged at the end of the sealing sleeve 126, when the elevator stops, the fixed connection seat 121 and the movable connection seat 122 are aligned, the second permanent magnet 127 is energized, the sealing sleeve, with the escape of the sealing sleeve 126, the two blocking valves 124 are pushed open to communicate the weight reducing water tank 5 with the weight increasing water tank 6, when the elevator door is closed, the second permanent magnet 127 changes the current direction, changes the magnetic field direction, pushes back the sealing sleeve 126, and disconnects the communication between the weight reducing water tank 5 and the weight increasing water tank 6.

The working principle and the working process of the invention are as follows:

when the elevator is in no load, the weight of the two sides of the traction roller 3 is the same, when the elevator door is opened, the weight reduction water tank 5 is communicated with the weight gain water tank 6 through the communicating pipe 7, the load plate 9 is pressed along with the increase of the load of the elevator car 1, water which is half of the load mass in the load plate 9 is injected into the weight gain water tank 6, the mass of the weight reduction water tank 5 and the mass of the weight gain water tank 6 are redistributed, the mass of the two sides of the guide frame 2 is balanced, the elevator door is closed, the weight reduction water tank 5 is disconnected from the weight gain water tank 6, and the traction roller 3 is started to enable the elevator car 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an elevator traction system of self-balancing, includes elevator sedan-chair (1), leading truck (2), traction roller (3) and counterweight (4), elevator sedan-chair (1) and counterweight (4) all with and leading truck (2) sliding connection, elevator sedan-chair (1) and counterweight (4) are located the both sides of dragging roller (3) respectively, its characterized in that: the lower extreme of elevator sedan-chair (1) is equipped with subtracts heavy water tank (5), the lower extreme to heavy piece (4) is equipped with weight gain water tank (6), weight gain water tank (6) are through communicating pipe (7) and subtract heavy water tank (5) intercommunication, the bottom of elevator sedan-chair (1) is equipped with load board (9), the inside swing joint who subtracts heavy water tank (5) has first piston (8), load board (9) run through the bottom and first piston (8) fixed connection of elevator sedan-chair (1) through the spliced pole, be equipped with spring (10) on first piston (8) or load board (9), it is equipped with pressure differential balance piece (11) in water tank (6) to increase weight.

2. The self-balancing elevator traction system of claim 1, wherein: pressure difference balancing piece (11) including assembly and the inside gliding second piston (111) from top to bottom of weight-increasing water tank (6), the up end fixed mounting of second piston (111) has first permanent magnet (112), the top fixed mounting of first permanent magnet (112) has first electro-magnet (113), first electro-magnet (113) current direction and size change along with the change of floor, the cavity between first permanent magnet (112) and first electro-magnet (113) is equipped with air vent (114).

3. The self-balancing elevator traction system of claim 1, wherein: the up-down moving range of the elevator car (1) is larger than the moving range of the counterweight (4).

4. The self-balancing elevator traction system of claim 1, wherein: and pressure reducing valves are arranged on the side walls of the weight reducing water tank (5) and the weight increasing water tank (6).

5. The self-balancing elevator traction system of claim 1, wherein: communicating pipe (7) are the hose, the both ends of communicating pipe (7) are respectively through connector (12) fixed connection in losing weight water tank (5) and weight gain water tank (6), and two connectors (12) are located the both sides of elevator respectively, the middle part of communicating pipe (7) is equipped with return bend (13).

6. The self-balancing elevator traction system of claim 1, wherein: communicating pipe (7) are the steel pipe of fixed mounting on leading truck (2), connector (12) are including installing deciding connecting seat (121) and installing on communicating pipe (7) on losing weight water tank (5) or weight gain water tank (6), move connecting seat (122) through flexible pipe (123) swing joint sealing sleeve (126), sealing sleeve (126) and the inside of deciding connecting seat (121) connecting pipe are equipped with cut-off valve (124) that have ejector pin (125), the periphery of deciding the connecting pipe of connecting seat (121) is equipped with second permanent magnet (127), the end of sealing sleeve (126) is equipped with second electro-magnet (128).