CN211545616U

CN211545616U - Safe and energy-saving towing elevator structure

Info

Publication number: CN211545616U
Application number: CN201820838224.3U
Authority: CN
Inventors: 李顺贤; 罗伟
Original assignee: Sichuan Di Ca Elevator Manufacturing Co ltd
Current assignee: Sichuan Di Ca Elevator Manufacturing Co ltd
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2020-09-22
Anticipated expiration: 2028-06-01

Abstract

The utility model discloses a safe and energy-saving towing elevator structure, including the elevator well, well roof bottom installs in proper order to counter-weight leading wheel, car leading wheel, traction sheave, wire rope one end tip is installed in well roof bottom, wire rope other end tip walks around in proper order to counter-weight return pulley, counter-weight leading wheel, traction sheave, car return pulley and is fixed in well roof bottom, car return pulley, car leading wheel, traction sheave, counter-weight leading wheel, counter-weight return pulley are located same vertical plane, to counter-weight leading wheel and traction sheave are located the same horizontal plane, car leading wheel peak tangent line and traction sheave minimum point tangent line are located the same horizontal line; the counterweight reverse wheel is connected with a counterweight through a connecting piece A, and the car reverse wheel is connected with a car through a connecting piece B. The utility model discloses can prevent effectively that the elevator car is unexpected to be removed and the potential safety hazard that causes, can further reduce the power consumptive power of elevator operation simultaneously, improve the energy-conserving effect of elevator.

Description

Safe and energy-saving towing elevator structure

Technical Field

The utility model relates to an elevator structure especially relates to an energy-conserving traction elevator structure of safety.

Background

The existing winding method of the steel wire rope of the traction elevator is that one end of the steel wire rope is fixed at the top of a well, the other end of the steel wire rope downwards winds and is fixed at a return rope wheel at the top of a counterweight, then the steel wire rope upwards passes through a counterweight guide wheel fixed at the top of the well, the traction sheave downwards winds and is fixed at the top of a cage, then the steel wire rope is upwards fixed at the top of the well, the rope winding method leads the wrap angle a of the traction sheave to be =90 degrees, the pulling force F = sin45 degrees multiplied (the counterweight weight P + the total cage weight Q) =0.71 multiplied (the counterweight weight P + the total cage weight Q), because the traction elevator takes the friction force of the traction sheave as the driving power, the friction force is in direct proportion to the wrap angle of the traction sheave and the magnitude of the pulling force of the traction sheave, the reduction of the wrap angle of the traction sheave and the pulling force of the traction sheave inevitably causes the reduction of the friction force of the, and the braking force of the band-type brake is reduced, so that the car is easy to move accidentally to cause safety accidents.

SUMMERY OF THE UTILITY MODEL

Weak point to prior art exists, the utility model aims to provide a safe and energy-conserving traction elevator structure can prevent effectively that the elevator car is unexpected to be removed and the potential safety hazard that causes, can further reduce the power consumptive power of elevator operation simultaneously, has improved the energy-conserving effect of elevator, has advantages such as the cost is lower, easy to carry out.

The purpose of the utility model is realized through the following technical scheme:

a safe and energy-saving towing elevator structure comprises an elevator well, a car reverse wheel, a steel wire rope, a car guide wheel, a traction sheave, a counterweight guide wheel, a counterweight reverse wheel and a counterweight, wherein a well top plate is arranged at the top of the elevator well, the bottom of the well top plate is sequentially provided with the counterweight guide wheel, the car guide wheel and the traction sheave from left to right, one end of the steel wire rope is mounted at the bottom of the well top plate positioned at the left side of the counterweight guide wheel, the other end of the steel wire rope is sequentially wound around the counterweight reverse wheel, the counterweight guide wheel, the traction sheave and the car reverse wheel and is fixed at the bottom of the well top plate, and the other end of the steel wire rope is fixedly positioned at the bottom of the well top; the car return pulley, the car guide pulley, the traction sheave, the counterweight guide pulley and the counterweight return pulley are positioned in the same vertical plane, the counterweight guide pulley and the traction sheave are positioned in the same horizontal plane, and a tangent line at the highest point of the car guide pulley and a tangent line at the lowest point of the traction sheave are positioned on the same horizontal line; the counterweight reverse wheel is connected with a counterweight through a connecting piece A, and the car reverse wheel is connected with a car through a connecting piece B.

In order to realize better the utility model discloses, lift driving motor is installed to well roof bottom, lift driving motor is located between car leading wheel and the wire rope other end tip, lift driving motor passes through the haulage rope and is connected with the car return pulley.

Preferably, the wrap angle between the traction sheave and the wire rope is not less than 180 °.

Preferably, the wire rope between the car return sheave and the car guide sheave is a vertical wire.

Preferably, the wire rope between the counterweight return sheave and the counterweight guide sheave is a vertical line.

Preferably, the car guide sheave, the traction sheave and the counterweight guide sheave are fixed pulleys, and the car return sheave and the counterweight return sheave are movable pulleys.

Preferably, the wrap angle between the car return pulley and the steel wire rope is not less than 180 degrees.

Preferably, the wrap angle between the counterweight return pulley and the steel wire rope is not less than 180 degrees.

Compared with the prior art, the utility model, have following advantage and beneficial effect:

the utility model discloses can prevent effectively that the elevator car is unexpected to be removed and the potential safety hazard that causes, can further reduce the power consumptive power of elevator operation simultaneously, improve the energy-conserving effect of elevator, have advantages such as the cost is lower, easy to carry out.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is the structure schematic diagram of the utility model with the lifting driving motor and the traction rope installed.

Wherein, the names corresponding to the reference numbers in the drawings are:

1-a car, 2-a car reverse sheave, 3-a steel wire rope, 4-a car guide sheave, 5-a traction sheave, 6-a counterweight guide sheave, 7-a counterweight reverse sheave, 8-a counterweight, 9-a hoistway roof, 10-a lifting driving motor and 11-a traction rope.

Detailed Description

The present invention will be described in further detail with reference to examples.

Examples

As shown in fig. 1, a safe and energy-saving towing elevator structure comprises an elevator shaft, a car 1, a car return pulley 2, a steel wire rope 3, a car guide pulley 4, a traction sheave 5, a counterweight guide pulley 6, a counterweight return pulley 7 and a counterweight 8, wherein a shaft top plate 9 is arranged at the top of the elevator shaft, the counterweight guide pulley 6, the car guide pulley 4 and the traction sheave 5 are sequentially arranged from the left side to the right side at the bottom of the shaft top plate 9, the car guide pulley 4, the traction sheave 5 and the counterweight guide pulley 6 are fixed pulleys, and the car return pulley 2 and the counterweight return pulley 7 are movable pulleys. The end part of one end of the steel wire rope 3 is installed at the bottom of a hoistway roof 9 on the left side of the counterweight guide wheel 6, the end part of the other end of the steel wire rope 3 sequentially bypasses the counterweight reverse wheel 7, the counterweight guide wheel 6, the traction wheel 5 and the car reverse wheel 2 and is fixed at the bottom of the hoistway roof 9, and the end part of the other end of the steel wire rope 3 is fixedly arranged at the bottom of the hoistway roof 9 between the counterweight guide wheel 6 and the car guide wheel 4. The car return pulley 2, the car guide pulley 4, the traction sheave 5, the counterweight guide pulley 6 and the counterweight return pulley 7 are positioned in the same vertical plane, the counterweight guide pulley 6 and the traction sheave 5 are positioned in the same horizontal plane, and the tangent of the highest point of the car guide pulley 4 and the tangent of the lowest point of the traction sheave 5 are positioned on the same horizontal line. The counterweight reverse wheel 7 is connected with a counterweight 8 through a connecting piece A, and the car reverse wheel 2 is connected with the car 1 through a connecting piece B.

As shown in fig. 2, a lifting driving motor 10 is installed at the bottom of the hoistway top plate 9, the lifting driving motor 10 is located between the car guide pulley 4 and the end of the other end of the steel wire rope 3, and the lifting driving motor 10 is connected with the car return pulley 2 through a traction rope 11. When the lift car 1 needs to ascend integrally, the lifting driving motor 10 is started, the lifting driving motor 10 drives the lift car 1 to ascend integrally through the traction rope 11, and when the lift car 1 needs to descend integrally, the lifting driving motor 10 is started, and the lifting driving motor 10 drives the lift car 1 to descend integrally through the traction rope 11.

As shown in fig. 1, the wrap angle between the traction sheave 5 and the wire rope 3 is not less than 180 °. The wrap angle between the car return pulley 2 and the steel wire rope 3 is not less than 180 degrees. The wrap angle between the counterweight reverse wheel 7 and the steel wire rope 3 is not less than 180 degrees.

As shown in fig. 1, the wire rope 3 between the car return sheave 2 and the car guide sheave 4 is a vertical line. The steel wire rope 3 between the counterweight reverse wheel 7 and the counterweight guide wheel 6 is a vertical line.

The utility model discloses the pressure that receives on the traction wheel 5 increases to the twice than the pressure that receives of current structure traction wheel, corresponding traction frictional force increases to the twice, traction wheel 5 also increases to the twice with current structure traction wheel and wire rope cornerite with 3 cornerites of wire rope, corresponding traction frictional force increases to the twice, add up traction frictional force and increase to the quadruple, traction wheel 5 moment of power increases to the quadruple promptly, increase to the twice because of the difference to 1 weight of car to being equipped with the load and the difference of this structure at present, traction wheel 5 moment of resistance increases to the twice promptly, traction wheel 5 moment of power increases to the twice with the actual moment of power after gram resistance (gravity) moment balance, energy-conserving effect has been reached. According to the national standard elevator manufacturing and installation safety specification (GB 7588-2003), the elevator counterweight is equal to 50% of the weight of the car 1 plus the rated load, according to which the maximum difference between the counterweight 6 and the car 1 is equal to 50% of the rated load, assuming that the car weight P =1200kg and the rated load Q =1000kg, the counterweight weight T =1200kg +1000kg × 50% =1700 kg, and the car-stopping sheave equivalent friction coefficient is u =0.13, without considering the wrap angle between the rope 3 and the sheave 5 and the weight of accessories such as the rope:

the car stops fully loaded working condition: friction force F = (P + Q + T) × u = (1200 kg +1000kg +1700 kg) × 0.13=507 kg.

Because the direction of the friction force is opposite to the direction of the relative motion or the motion trend, the friction force is consistent with the direction of the gravity of the counterweight, so that the weight of the two sides of the towing roller 5 is basically consistent, namely the moment of the towing roller 5 is almost equal to 0, the lift car is in a static state, even if the brake pad of the brake is worn, the lift car can not move accidentally, and the safety accident that the lift car moves accidentally can be effectively prevented.

In a similar way, when the lift car 1 stops the no-load working condition, the safety accident that the lift car moves accidentally can be effectively prevented.

The utility model discloses can prevent effectively that 1 unexpected removal of elevator car from and the potential safety hazard that causes, can further reduce the power consumptive power of elevator operation simultaneously, improve the energy-conserving effect of elevator, have advantages such as the cost is lower, easy to carry out.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A safe and energy-saving towing elevator structure, includes the elevator well, the elevator well top has well roof (9), its characterized in that: comprises a lift car (1), a lift car reverse wheel (2), a steel wire rope (3), a lift car guide wheel (4), a traction wheel (5), a counterweight guide wheel (6), a counterweight reverse wheel (7) and a counterweight (8), the bottom of the hoistway roof (9) is sequentially provided with a counterweight guide wheel (6), a car guide wheel (4) and a traction wheel (5) from the left side to the right side, one end part of the steel wire rope (3) is arranged at the bottom of a hoistway top plate (9) on the left side of the counterweight guide wheel (6), the end part of the other end of the steel wire rope (3) sequentially bypasses a counterweight reverse wheel (7), a counterweight guide wheel (6), a traction wheel (5) and a car reverse wheel (2) and is fixed at the bottom of a hoistway roof (9), the end part of the other end of the steel wire rope (3) is fixedly positioned at the bottom of a hoistway top plate (9) between the counterweight guide wheel (6) and the car guide wheel (4); the car return pulley (2), the car guide pulley (4), the traction sheave (5), the counterweight guide pulley (6) and the counterweight return pulley (7) are positioned in the same vertical plane, the counterweight guide pulley (6) and the traction sheave (5) are positioned in the same horizontal plane, and a tangent line at the highest point of the car guide pulley (4) and a tangent line at the lowest point of the traction sheave (5) are positioned on the same horizontal line; counterweight (8) is connected with counterweight reversing wheel (7) through connecting piece A, car reversing wheel (2) are connected with car (1) through connecting B.

2. A safe and energy-saving traction elevator structure according to claim 1, wherein: lift driving motor (10) are installed to well roof (9) bottom, lift driving motor (10) are located between car leading wheel (4) and wire rope (3) other end tip, lift driving motor (10) are connected with car return pulley (2) through haulage rope (11).

3. A safe and energy-saving traction elevator structure according to claim 1 or 2, wherein: the wrap angle between the traction sheave (5) and the steel wire rope (3) is not less than 180 degrees.

4. A safe and energy-saving traction elevator structure according to claim 1 or 2, wherein: the steel wire rope (3) between the cage reverse wheel (2) and the cage guide wheel (4) is a vertical line.

5. A safe and energy-saving traction elevator structure according to claim 1 or 2, wherein: the steel wire rope (3) between the counterweight reverse wheel (7) and the counterweight guide wheel (6) is a vertical line.

6. A safe and energy-saving traction elevator structure according to claim 1 or 2, wherein: the car directive wheel (4), the traction wheel (5) and the counterweight directive wheel (6) are fixed pulleys, and the car reverse wheel (2) and the counterweight reverse wheel (7) are movable pulleys.