CN109626176B - Traction structure of 12:1 cargo elevator - Google Patents

Abstract

The invention belongs to the technical field of elevator traction equipment, in particular to a traction structure of a 12 to 1 cargo elevator, which comprises a car frame, a bearing assembly arranged above the car frame and a counterweight device arranged on the side of the car frame, wherein a car top rope pulley group is arranged at the top of the car frame, a first bearing beam, a second bearing beam and a third bearing beam which are perpendicular to the car top rope pulley group are arranged on the bearing assembly, and a counterweight counter rope pulley group is arranged on the counterweight device. The invention can ensure that the lift car does not incline to separate from the guide rail when in operation, and the rope wheel and the guide wheel which are arranged on the bearing component and the counterweight component are matched to reduce the load of the traction host machine, thereby meeting the requirements of dragging a high-load lift by a low-power host machine, being energy-saving and environment-friendly, having stable structure, strong load capacity and good balance performance, greatly prolonging the service lives of the brake component and the bearing component of the lift and being widely applied to the lift with large tonnage and generating considerable economic value.

Description

Traction structure of 12:1 freight elevator

Technical field

The invention belongs to the technical field of elevator traction equipment, especially the traction structure of a 12:1 freight elevator.

Background technique

The elevator needs a stable balance system during operation. The traction mechanism is one of the important design links of the elevator balance system. In a conventional load freight elevator, because the car is not too large, the car roof suspension device is usually located in the middle of the car. When the load on the bottom of the car is not located in the middle of the car and produces a relatively large deviation, it will have a great impact on the car. However, when the load and the car are both too large, it is difficult to ensure the stability of the car using the traction suspension method in the middle of the car. balance.

In recent years, with the acceleration of urbanization and the development of elevator technology, a large number of large and high-rise factories and other buildings have emerged and are equipped with elevators. With the higher floors and the development of industrialization, the load capacity requirements of freight elevators are also increasing. The larger the elevator, the greater the demand for the elevator's supporting capacity. More and more large-scale equipment, logistics or goods need to be transported in the vertical direction. In current large-tonnage cargo elevators, the traction system mainly uses 2:1 Or the traction ratio winding method such as 4:1 has higher requirements on the endurance of the host, safety gear, and guide rails, and also brings unnecessary mechanical loss and electrical energy consumption. Therefore, elevators with traditional traction ratio structures are only suitable for elevators with small load capacity. When large-tonnage elevators are needed, the suspension of the corresponding traction system also needs to be re-designed to increase the operating speed of large-tonnage elevators. Reasonable layout, the use of traditional traction has higher requirements on the load capacity of the host, and cannot guarantee that the car will continue to maintain a stable load during operation, which poses a greater safety risk.

Contents of the invention

The purpose of the present invention is to address the shortcomings and shortcomings of the existing technology and provide a traction structure of a 12:1 freight elevator with stable structure and high safety factor that can realize the lifting of large-tonnage elevators by ordinary permanent magnet synchronous traction machines.

The technical solution of the present invention is as follows:

The traction structure of the 12:1 freight elevator includes a car frame, a load-bearing component installed above the car frame, and a counterweight device installed on the side of the car frame. The top of the car frame is provided with a car roof. Sheave set, the load-bearing assembly is provided with a first load-bearing beam, a second load-bearing beam, and a third load-bearing beam that are perpendicular to the car top sheave set. There is a load-bearing beam between the second load-bearing beam and the third load-bearing beam. There is a car top winding beam parallel to the car top sheave set. The car top winding beam is provided with a car top winding sheave set used in conjunction with the car top sheave set. The first load-bearing beam is mounted on There is a counterweight side rope head plate and a counterweight guide wheel set. The first load-bearing beam and the second load-bearing beam are equipped with a traction main engine. The third load-bearing beam and the second load-bearing beam are respectively equipped with front load bearings. The car frame guide wheel and the rear car frame guide wheel, the car side rope head plate is installed on the third load-bearing beam, the counterweight device is provided with a counterweight reverse sheave group, and the car top rope The wheel set, the car top winding pulley set, the counterweight guide pulley set, the traction main engine, the front car frame guide pulley, the rear car frame guide pulley, and the counterweight reverse rope pulley set are connected by a wire rope. The two ends of the steel wire rope The heads are respectively fixed on the car side rope head plate and the counterweight side rope head plate.

Preferably, the car frame is composed of no less than three groups of car frames with symmetrical structures and the same spacing. The columns on both sides of the car frame are provided with safety gears and a corresponding set of car guide rails.

Preferably, the car frame includes a front car frame, a middle car frame, and a rear car frame, and car top ropes are respectively placed on the front car frame, the middle car frame, and the rear car frame. The front car top sheave, the middle car top sheave, and the rear car top sheave of the wheel set are wound horizontally.

Preferably, the car top winding wheel set is composed of a front winding wheel, a middle winding wheel, and a rear winding wheel. The front winding wheel, the middle winding wheel, and the rear winding wheel cooperate with the front car top wheel respectively. The top sheave, the middle car top sheave and the rear car top sheave complete the winding action.

Preferably, the counterweight counter pulley set includes 6 counterweight counter pulleys, the 6 counterweight counter pulleys are wound longitudinally and are placed on the same straight line, and the 6 counterweight counter pulleys are There are 6 sets of counterweights below the sheave that are used to balance the counterweights below.

Preferably, the counterweight guide wheel set includes 6 counterweight guide wheels, and the 6 counterweight guide wheels cooperate with 6 counterweight reverse sheaves to complete the winding action.

Preferably, the steel wire rope on the side of the car frame of the traction main machine sequentially goes around the front car top sheave downwards and laterally, goes around the front winding pulley upwards and laterally, goes back around the front car top sheaves downwards and laterally, and goes longitudinally upwards. Bypass the front car frame guide wheel, downward and laterally around the middle car top sheave, upward and laterally around the middle winding wheel, downward and laterally around the middle car top sheave, upward and longitudinally by the rear car frame guide wheel, downward Lateral around the rear car top sheave, upward and laterally around the rear winding wheel, downward and laterally around the rear car top sheave, and upward fixed on the car side rope head plate.

Preferably, the steel wire rope on the side of the counterweight device of the traction main engine is turned downwards and longitudinally in an "S" shape to bypass 6 counterweight reverse sheaves and 6 counterweight guide wheels. The steel wire rope is finally passed by the counterweight. The reverse sheave is led upward and fixed on the rope head plate on the counterweight side.

Preferably, the first load-bearing beam, the second load-bearing beam, and the third load-bearing beam are I-beams, and the traction hosts installed on the first load-bearing beam and the second load-bearing beam are permanent magnet synchronous traction machines. .

The beneficial effects of the present invention are: the traction structure of the 12:1 freight elevator can maintain a superior balance state of the car by installing the car top sheave group on the car frame, and can ensure that the car does not tilt away during operation. The guide rails, together with the sheaves and guide wheels arranged on the load-bearing components and counterweight devices, reduce the load of the traction host, thereby meeting the needs of the small-power host to drag the large-load elevator, which is both energy-saving and environmentally friendly. In addition, the lift above the car frame The components used for fixing and winding are all installed on the load-bearing beams and winding beams of the load-bearing components, and the car top winding pulley set cooperates with the car top rope pulley set for transmission, making the stress points of the car more balanced and conducive to the steel wire rope. The neat winding and running stress reduce the load requirements of the wire rope. Its structure is stable, its load capacity is strong, and it has good balance performance, which greatly improves the service life of elevator braking parts and load-bearing parts. It can be widely used in large-tonnage elevators and generates considerable economic value.

Description of drawings

Figure 1 is a schematic diagram of the traction structure of a 12:1 freight elevator according to an embodiment of the present invention;

Figure 2 is a schematic diagram of the traction structure winding of the 12:1 freight elevator according to the embodiment of the present invention.

Explanation of reference signs: car frame 1, front car frame 11, middle car frame 12, rear car frame 13, safety gear 14, guide rail 15, load-bearing component 2, first load-bearing beam 21, second load-bearing beam 22 , third load-bearing beam 23, car top winding beam 24, counterweight side rope head plate 25, car side rope head plate 26, traction main engine 27, counterweight guide wheel set 28, counterweight guide wheel 29, counterweight Device 3, counterweight anti-sheave group 31, counterweight anti-sheave 32, counterweight block 33, car top sheave group 4, front car top sheave 41, middle car top sheave 42, rear car top sheave 43 , car top winding wheel set 5, front winding wheel 51, middle winding wheel 52, rear winding wheel 53, front car frame guide wheel 6, rear car frame guide wheel 7.

Detailed ways

As shown in Figures 1 and 2, the traction structure of the 12:1 freight elevator described in this embodiment, the traction structure of the 12:1 freight elevator, includes a car frame 1 and is installed above the car frame 1 The load-bearing component 2 and the counterweight device 3 installed on the side of the car frame. The top of the car frame 1 is provided with a car top sheave group 4. The car frame 1 includes a front car frame 11, The middle car frame 12 and the rear car frame 13 are respectively placed with the front car top sheaves 41 and 41 of the car top sheave group 4 respectively. The middle car top sheave 42 and the rear car top sheave 43. The front car top sheave 41, the middle car top sheave 42, and the rear car top sheave 43 are placed in transverse windings. The load-bearing component 2 is A first load-bearing beam 21, a second load-bearing beam 22, and a third load-bearing beam 23 are provided perpendicular to the car top sheave group 4. The first load-bearing beam 21, the second load-bearing beam 22, and the third load-bearing beam 23 are I-beam, there is a car top winding beam 24 parallel to the car top sheave group 4 between the second load-bearing beam 22 and the third load-bearing beam 23, and there is a car top winding beam 24 on the car top winding beam 24. The car top winding sheave set 5 used in conjunction with the car top sheave set 4 has a counterweight side rope head plate 25 and a counterweight guide pulley set 28 installed on the first load-bearing beam 21. 21 and the second load-bearing beam 22 are equipped with a traction main engine 27. The traction main engine 27 installed on the first load-bearing beam 21 and the second load-bearing beam 22 is a permanent magnet synchronous traction machine. The third load-bearing beam 27 is a permanent magnet synchronous traction machine. The front car frame guide wheel 6 and the rear car frame guide wheel 7 are respectively installed on the beam 23 and the second load-bearing beam 22. The car side rope head plate 26 is installed on the third load-bearing beam 23. The counterweight The device 3 is provided with a counterweight counter pulley set 31, the car top sheave set 4, the car top winding pulley set 5, the counterweight guide pulley set 28, the traction main engine 27, the front car frame guide pulley 6, The rear car frame guide wheel 7 and the counterweight reverse sheave group 31 are connected by a wire rope. The two ends of the wire rope are fixed on the car side rope head plate 26 and the counterweight side rope head plate 25 respectively. Installing the car top sheave group 4 on the car frame can maintain the car in a superior balance state and ensure that the car does not tilt away from the guide rail during operation. It cooperates with the sheaves and guide wheels arranged on the load-bearing component 2 and the counterweight device 3. The load of the traction host 27 is reduced, thereby meeting the need for a small-power host to drag a large-load elevator, which is both energy-saving and environmentally friendly.

In this embodiment, in order to ensure the stability of the car frame carrying the car, the car frame 1 is composed of no less than three groups of car frames with symmetrical structures and the same spacing. The two sides of the car frame The column is equipped with a safety gear 14 and a corresponding set of car guide rails 15. A safety gear and a car top sheave set 4 are installed on each car frame to form a suspension number of at least 6 strands to achieve a superior balance state of the car. .

In this embodiment, the car top winding wheel set 5 is composed of a front winding wheel 51, a middle winding wheel 52, and a rear winding wheel 53. 52. The rear winding wheel 53 cooperates with the front car top sheave 41, the middle car top sheave 42, and the rear car top sheave 43 to complete the winding action, which can reduce the vibration caused by the braking device and the motor during the operation of the car. The acting force is conducive to improving the stability of operation.

In this embodiment, the counterweight reverse sheave group 31 includes six counterweight reverse pulleys 32, and the six counterweight reverse pulleys 32 are wound longitudinally and placed on the same straight line, so Below the above-mentioned six counterweight reverse sheaves 32 are provided six sets of counterweight blocks 33 used for balancing the counterweight below. The described counterweight guide wheel set 28 includes six counterweight guide wheels 29. The six A counterweight guide pulley 29 cooperates with six counterweight anti-sheave pulleys 32 to complete the winding action. Using six sets of counterweight anti-sheave pulleys 32 and counterweight guide pulleys 29 can filter the vibration during the counterweight process and reduce the impact on the elevator. The impact brought by it improves the riding comfort.

In this embodiment, the wire rope of the traction main machine 27 on the side of the car frame 1 sequentially and laterally bypasses the front car top sheave 41 downwards, the front winding wheel 51 upwards, and the front winding wheel 51 downwards. The front car top sheave 41, upwards and longitudinally around the front car frame guide wheel 6, downward and laterally around the middle car top sheave 42, upward and laterally around the middle winding wheel 52, and downward and laterally around the middle car top sheave. 42. Go around the rear car frame guide wheel 7 vertically upwards, go around the rear car top sheave 43 laterally downwards, go around the rear winding pulley 53 upwards and laterally, go around the rear car top sheave 43 downwards and laterally, and fix it upward on the car side. On the rope head plate 26, the traction main engine 27 relies on the steel wire rope on the 3rd side of the counterweight device to cross downward and longitudinally in an "S" shape to bypass the 6 counterweight reverse sheaves 32 and 6 counterweight guide wheels 29. The above-mentioned steel wire rope is finally led out from the counterweight anti-sheave 32 and fixed upward on the counterweight side rope head plate 25, so that the small-power main engine can drag the large-load elevator, and the evenly distributed car frame can disperse the force on a single guide rail. Improve safety factor.

Through the above technical solution, the traction structure of the 12:1 freight elevator is used for fixing and winding above the car frame 1. The components used for fixing and winding are installed on the load-bearing beams and winding beams of the load-bearing components, and the car top winding wheel The combination of the car top sheave group transmission makes the stress points of the car more balanced, helps the neat winding and running stress of the wire rope, and reduces the load requirements of the wire rope. Its structure is stable, its load capacity is strong, and it has good balance performance, which greatly improves the service life of elevator braking parts and load-bearing parts. It can be widely used in large-tonnage elevators and generates considerable economic value.

Although embodiments of the present invention have been disclosed above, they are not limited to the uses set forth in the specification and description. It can be applied to various fields suitable for the present invention. Additional modifications may readily be made by those skilled in the art. Therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept as defined by the claims and their equivalent scope.

Claims (8)

The traction structure of a 1.12:1 freight elevator includes a car frame, a load-bearing component installed above the car frame, and a counterweight device installed on the side of the car frame. The top of the car frame is provided with a car roof rope. Wheel set, characterized in that: the load-bearing assembly is provided with a first load-bearing beam, a second load-bearing beam, and a third load-bearing beam that are perpendicular to the car top rope pulley set, and the second load-bearing beam and the third load-bearing beam There is a car top winding beam parallel to the car top sheave set. The car top winding beam is provided with a car top winding sheave set used in conjunction with the car top sheave set. The first load-bearing The beam is equipped with a counterweight side rope head plate and a counterweight guide wheel set. The first load-bearing beam and the second load-bearing beam are equipped with a traction main engine. The third load-bearing beam and the second load-bearing beam are respectively The front car frame guide wheel and the rear car frame guide wheel are installed, the car side rope head plate is installed on the third load-bearing beam, the counterweight device is provided with a counterweight reverse sheave group, and the The car top sheave set, the car top winding sheave set, the counterweight guide pulley set, the traction main engine, the front car frame guide pulley, the rear car frame guide pulley, and the counterweight reverse sheave set are connected by wire ropes. The two ends of the wire rope are respectively fixed on the car side rope head plate and the counterweight side rope head plate; The car frame is composed of no less than three groups of car frames with symmetrical structures and the same spacing. The no less than three groups of car frames include a front car frame, a middle car frame, and a rear car frame. The front car top sheave, the middle car top sheave, and the rear car top sheave of the car top sheave group are respectively placed on the front car frame, the middle car frame, and the rear car frame. The front car top sheave is The sheave, the middle car top sheave, and the rear car top sheave are placed with horizontal windings. 2. The traction structure of a 12:1 freight elevator as claimed in claim 1, characterized in that: the uprights on both sides of the car frame are provided with safety gears and a corresponding set of car guide rails. 3. The traction structure of a 12:1 freight elevator as claimed in claim 1, characterized in that: the car top winding wheel set consists of a front winding wheel, a middle winding wheel and a rear winding wheel. The front winding wheel, the middle winding wheel and the rear winding wheel respectively cooperate with the front car top sheave, the middle car top sheave and the rear car top sheave to complete the winding action. 4. The traction structure of a 12:1 cargo elevator as claimed in claim 1, characterized in that: the counterweight counter pulley set includes 6 counterweight counter pulleys, and the 6 counterweight counter pulleys The sheaves are wound longitudinally and placed on the same straight line. There are 6 sets of counterweight blocks below the 6 counterweight counter sheaves that are used to balance the counterweights below. 5. The traction structure of a 12:1 freight elevator as claimed in claim 1, characterized in that: the counterweight guide wheel set includes 6 counterweight guide wheels, and the 6 counterweight guide wheels cooperate with 6 counterweight anti-rope pulleys complete the winding action. 6. The traction structure of the 12:1 freight elevator according to claim 1, characterized in that: the steel wire rope on the side of the car frame of the traction main machine sequentially bypasses the front car top sheave downwards and laterally, and upwards Laterally around the front winding wheel, downward and laterally around the front car top sheave, upward and longitudinally around the front car frame guide wheel, downward and laterally around the middle car top sheave, upward and laterally around the middle winding wheel, and upward and horizontally around the middle car top sheave. Go down and laterally around the middle car top sheave, go up and go around the rear car frame guide pulley longitudinally, go down and go around the rear car top sheave, go up and go around the rear winding pulley, go down and go around the rear car top sheave, and fix it upward. On the car side headboard. 7. The traction structure of a 12:1 cargo elevator as claimed in claim 1, characterized in that: the traction main machine passes through 6 "S"-shaped crosses in the direction of the steel wire rope on the side of the counterweight device in a downward and longitudinal direction. The counterweight anti-pulley and 6 counterweight guide wheels, the steel wire rope is finally led out from the counterweight anti-pulley and fixed upward on the counterweight side rope head plate. 8. The traction structure of a 12:1 freight elevator according to claim 1, characterized in that: the first load-bearing beam, the second load-bearing beam, and the third load-bearing beam are I-beams, and the third load-bearing beam The traction hosts installed on the first load-bearing beam and the second load-bearing beam are permanent magnet synchronous traction machines.