CN112694000A

CN112694000A - Traction type elevator

Info

Publication number: CN112694000A
Application number: CN202011397244.XA
Authority: CN
Inventors: 张振华; 刘治帮; 罗海涛; 陈佳佳; 蒋毅杰
Original assignee: Hengda Fuji Elevator Co Ltd
Current assignee: Hengda Fuji Elevator Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-04-23
Anticipated expiration: 2040-12-03
Also published as: CN112694000B

Abstract

A traction elevator includes: a shaft, an elevator lifting component, a counterweight lifting component, and a power component; the present invention only uses two shaped steels as the bearing beams of the elevator, which reduces the number of reserved bearing platforms and reduces the difficulty of construction. Cost saving; at the same time, a bracket partition is also set between the counterweight and the car to provide support for the car guide device; the counterweight wheels arranged staggered side by side on the counterweight and the rotatable counterweight guide set on the load-bearing beam The counterweight wheel is located between the horizontal projections of the two load-bearing beams, which ensures the uniform force of the wire rope, avoids the influence of the slight twisting of the counterweight on the wire rope, and ensures the reliability and long-term operation of the elevator. run.

Description

Traction type elevator

Technical Field

The invention relates to the field of elevators, in particular to a traction type elevator.

Technical Field

An elevator is a vertical elevator powered by an electric motor and equipped with a car-like car for carrying people or cargo in a multi-story building. A vertical lift elevator has a car that travels between at least two vertical rows of rigid guide rails. The size and the structural form of the car are convenient for passengers to access or load and unload goods. The elevator not only brings convenience for people to go up and down stairs, but also greatly promotes the development of real estate towards the direction of super high-rise.

Chinese patent with application number cn201721884399.x discloses a traction structure of a machine room traction type car elevator, which comprises: the counterweight beam is horizontally arranged on the machine room ground and is composed of channel steel perpendicular to the bearing beam; a traction machine with a traction ratio of 4:1 and a traction wheel driven by the traction machine are fixedly arranged on the bearing cross beam; the bearing beam is also provided with two car top guide wheels, a rope clamping device and a car top rope hanging plate; the counterweight beam is provided with a counterweight guide wheel and a counterweight sling plate; one end of the hoisting rope is connected to the car top hoisting rope plate through a car top rope head, and the other end of the hoisting rope is connected to the counterweight hoisting rope plate through a counterweight rope head; the traction rope sequentially bypasses the car top wheel, the two car top guide wheels, the car top wheel, the traction wheel, the counterweight guide wheel and the counterweight wheel from the car top lifting rope plate and is stopped at the counterweight lifting rope plate. The traction type elevator adopts a bearing cross beam which is horizontally arranged above the machine room ground and consists of two symmetrically arranged I-beams, and a counterweight cross beam which is horizontally arranged above the machine room ground and is vertical to the bearing cross beam and consists of channel steel, and is jointly used as a cross beam for bearing a counterweight and a lift car, the structure needs to be welded at the joint of the bearing cross beam and the counterweight cross beam, which is not stable enough and makes the operation of realizing the technical scheme more complicated; when the counterweight moves too fast and passes over the car, it may swing against the car, which may increase the force on the wire rope, which may present some safety hazards.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a traction type elevator.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a traction type elevator comprising: the hoistway provides installation positions for the elevator lifting assembly, the counterweight lifting assembly and the power assembly; the elevator lifting component is arranged in the hoistway and moves up and down under the action of the power component; the counterweight lifting component is arranged in the hoistway and used for balancing the gravity of the elevator lifting component through a steel wire rope; the power assembly is arranged in the well and provides lifting power for the elevator lifting assembly; the well include: the elevator shaft provides a space for the elevator box to move up and down; a counterweight hoistway for providing a space for the counterweight to move up and down; the bearing beam consists of a first profile and a second profile which are arranged in parallel, is fixedly installed at the tops of the elevator shaft and the counterweight shaft, and provides installation positions for the elevator lifting assembly, the counterweight lifting assembly and the power assembly; the power assembly comprises: the traction machine is fixed on the bearing beam and provides kinetic energy for the movement of the elevator box body; the traction wheel is fixed on the traction machine and outputs the power output by the traction machine through a steel wire rope; two ends of the steel wire rope are respectively fixed on the bearing beam and transmit power to pull the pulley to rotate; the elevator lifting assembly comprises: the elevator box body is suspended in the elevator shaft and used for carrying people or goods; the top box wheel is fixedly arranged at the top of the elevator box body and controls the movement direction of the elevator box body through rotation; the box body guide wheel is fixedly arranged on the bearing beam and changes the direction of the force on the steel wire rope through rotation; counterweight lifting unit include: a counterweight suspended in the counterweight hoistway for balancing the weight of the elevator car; the counterweight guide wheel is fixedly arranged on the bearing beam and changes the direction of the force on the steel wire rope through rotation; the counterweight wheel is fixed at the top of the counterweight and drives the counterweight to move up and down; the elevator is characterized in that a support clapboard is arranged between the elevator shaft and the counterweight shaft; the counterweight guide wheel comprises: the pulley is movably matched with a cylindrical shaft fixed on the pulley frame; the pulley yoke is movably matched with the bolt; and the bolt is fixedly connected with the first section bar through two nuts.

In the prior art, a bearing cross beam which is horizontally arranged above the floor of a machine room and consists of two symmetrically arranged I-beams and a counterweight cross beam which is horizontally arranged above the floor of the machine room and is vertical to the bearing cross beam and consists of channel steel enable the elevator car and the counterweight to be suspended in a well, in order to facilitate transportation and installation, the bearing cross beam and the counterweight cross beam of the vertical structure need to adopt a welding technology, so that the connection is very weak, the main stress is the welding part and the part where the lower ends of the I-beams serving as the bearing cross beam are connected with the counterweight cross beam, and the two bearing parts are not strong enough, and danger can occur after long-term use; and when the counterweight moves too fast and meets the car, the counterweight may swing against the car, and simple stress analysis shows that the force on the steel wire rope is increased, so that some potential safety hazards are brought, and safety accidents may be caused in the long term.

In the technical scheme, only two parallel section bars are used as the bearing cross beam to bear the lift car and the counterweight, so that the cross beam has a simpler structure, less bearing platforms for placing the bearing cross beam are reserved, the installation is more convenient, and preferably, the section bars are I-shaped steel; a support clapboard for isolating the elevator shaft and the counterweight shaft is arranged, preferably, the support clapboard comprises two support clapboards connected with the shaft wall and a third support clapboard positioned between the counterweight and the car, a guide rail and a braking device for controlling the movement of the counterweight are arranged on the third support clapboard, and the guide rail limits the movement track of the counterweight; the pulley frame of the counterweight guide wheel is sleeved on the bolt and movably matched with the bolt and can rotate around the bolt, so that when the counterweight is slightly twisted in the starting or braking process, the twisting of the counterweight can be converted into slight twisting of the counterweight, the steel wire rope and the whole counterweight, the former can drive the steel wire rope to deviate from the vertical state to cause the tensile force on the rope to be increased, thereby bringing potential safety hazards, and the steel wire rope of the latter always keeps the vertical state, so that the tensile force on the rope is always minimum; in order to facilitate the installation of the counterweight guide wheel, the pulley yoke of the counterweight guide wheel is composed of two side plates connected by a cylindrical shaft and a connecting piece with a cross section in an n-shaped shape and provided with three surface structures, through holes are formed in one end, far away from the cylindrical shaft, of each of two side surfaces and the corresponding side plate of the connecting piece, the connecting piece and the corresponding side plates are fixedly connected through screws, and round holes matched with the bolts are formed in the tops of the connecting pieces.

Preferably, the bolt is fixed on the bearing beam through a nut, a bolt hole is formed in one end, far away from the nut, of the bolt, and a bolt is fixed in the bolt hole.

Preferably, the counterweight lifting assembly at least comprises two counterweight wheels, and the two counterweight wheels are fixedly installed on the top of the counterweight.

In the technical scheme, the two counterweight pulleys do not need to be arranged in parallel at intervals in the direction vertical to the bearing beam, so that the installation length of the counterweight in the direction vertical to the bearing beam is longer, and the counterweight beam vertical to the bearing beam is required to bear the installation length, wherein the installation length refers to the vertical distance between the rope end of the steel wire rope on the counterweight beam and the plane where the traction sheave is located along the direction of the counterweight beam; the two counterweight pulleys can be arranged at intervals in a staggered mode, so that the installation length of the counterweight in the direction perpendicular to the bearing cross beam can be shortened, the counterweight lifting assembly can be suitable for being installed between the counterweight cross beam formed by two sectional materials, and the installation length refers to the horizontal straight line distance between the installation position of the counterweight guide wheel on the bearing cross beam and the installation position of the rope head at the end of the counterweight guide wheel.

Preferably, the two counterweight wheels are arranged on the counterweight in a parallel and staggered manner, and the staggered distance of the two counterweight wheels on the horizontal plane is equal to the diameter length of the counterweight guide wheel.

In the technical scheme, the staggered distance refers to the projection distance of two endpoints of two counterweight wheels, which are positioned on the horizontal plane and have the same diameter as the rotating shafts of the two counterweight wheels, on the horizontal plane, wherein the horizontal distance is equal to the horizontal distance in order to ensure that the steel wire rope between the counterweight wheels and the counterweight guide wheels is in a vertical state and ensure that the tension on the steel wire rope is minimum.

Preferably, the counterweight guide wheel is fixed on the first section bar, and one end of the steel wire rope led out from the counterweight guide wheel is fixed on the second section bar.

Preferably, the elevator lifting assembly comprises at least two of the box top wheels and at least two of the box body guide wheels, the box top wheels are respectively fixed at two ends of the elevator box body along the direction of the bearing beam, and the two box body guide wheels are positioned between the two box top wheels in the horizontal direction.

Preferably, one end of the diameter of the traction sheave on the horizontal plane is at a zero distance from one end of the diameter of the counterweight sheave on the horizontal plane in the horizontal direction; the distance between the other end of the diameter of the traction sheave on the horizontal plane and one end of the diameter of the box top wheel close to the counterweight on the horizontal plane is zero.

Preferably, the distance between one end of the diameter of the box top wheel close to the counterweight, which is on the horizontal plane, far away from the counterweight and one end of the diameter of the box body guide wheel, which is on the horizontal plane, on the horizontal direction is zero; the distance between one end of the box top wheel far away from the counterweight, which is positioned on the horizontal plane, and one end of the box body guide wheel, which is positioned on the horizontal plane, on the horizontal direction is zero.

Preferably, the traction machine is selected from one of an asynchronous traction machine and a synchronous traction machine.

In conclusion, the beneficial effects of the invention are as follows:

1. the invention only needs two sections as the bearing steel beam of the whole elevator device, has few reserved bearing platforms, does not need welding, is convenient to construct and saves the cost; the counterweights are arranged in a staggered mode, counterweight steel beams are not needed, and the utilization rate of a hoistway is improved;

2. according to the elevator device, the counterweight is separated from the car by the aid of the support clapboards, support is provided for the car running guide mechanism, and stable and long-term running of the whole elevator device is guaranteed;

3. the counterweight guide wheel is rotatable, so that the counterweight lifting device is simply arranged between the two profiles, and meanwhile, the vertical state of the steel wire rope is not influenced by slight twisting of the counterweight, the state that the tension in the steel wire rope is always minimum is ensured, and the service life of the steel wire rope is prolonged;

4. the invention adopts a 4:1 rope winding mode, reduces the load of the main shaft of the traction machine and prolongs the service life of the bearing of the traction machine; meanwhile, the upper limit of the carrying capacity of the elevator is improved;

5. the scheme of the synchronous traction machine adopted by the invention is higher in energy efficiency and better in energy-saving performance than that of an asynchronous traction machine.

Drawings

Fig. 1 is a schematic top view of a traction elevator provided in embodiment 1;

fig. 2 is a side connection view of a traction type elevator provided in embodiment 2;

fig. 3 is a cross-sectional view of the counterweight guide wheel;

in the figure, 1-hoistway, 2-elevator lifting component, 3-counterweight lifting component, 4-power component, 11-elevator hoistway, 12-counterweight hoistway, 13-bearing beam, 14-bracket clapboard, 21-elevator car, 22-roof wheel, 23-car guide wheel, 31-counterweight, 32-counterweight guide wheel, 33-counterweight wheel, 41-traction machine, 42-traction wheel, 43-steel wire rope, 131-first section bar, 132-second section bar, 321-pulley, 322-pulley frame and 323-bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

1. A traction type elevator comprising:

the hoistway 1 provides installation positions for the elevator lifting component 2, the counterweight lifting component 3 and the power component 4;

the elevator lifting component 2 is arranged in the hoistway 1 and moves up and down under the action of the power component 4;

a counterweight hoisting assembly 3 installed in the hoistway 1 and balancing the gravity of the elevator hoisting assembly 2 by a wire rope 43;

the power assembly 4 is arranged in the hoistway 1 and provides lifting power for the elevator lifting assembly 2;

the well 1 include:

an elevator shaft 11 for providing a space for the elevator cage 21 to move up and down;

a counterweight hoistway 12 that provides a space for the counterweight 31 to move up and down;

the bearing beam 13 consists of a first section bar 131 and a second section bar 132 which are arranged in parallel, is fixedly arranged at the tops of the elevator shaft 11 and the counterweight shaft 12, and provides mounting positions for the elevator lifting assembly 2, the counterweight lifting assembly 3 and the power assembly 4;

the power assembly 4 comprises:

the traction machine 41 is fixed on the bearing beam 13 and provides kinetic energy for the movement of the elevator box body 21;

a traction sheave 42 fixed to the hoist 41 and outputting power output from the hoist 41 through a wire rope 43;

two ends of the steel wire rope 43 are respectively fixed on the bearing beam 13 and transmit power to pull the pulley to rotate;

the elevator hoisting assembly 2 comprises:

an elevator car 21 suspended in the elevator shaft 11 for carrying people or cargo;

a top wheel 22 fixedly installed on the top of the elevator cage 1 for controlling the movement direction of the elevator cage 21 by rotation;

the box body guide wheel 23 is fixedly arranged on the bearing beam 13 and changes the direction of the force on the steel wire rope 43 through rotation;

the counterweight lifting component 3 comprises:

a counterweight 31 suspended in the counterweight hoistway 12 for balancing the weight of the elevator car 21;

the counterweight guide wheel 32 is fixedly arranged on the bearing beam 13 and changes the direction of the force on the steel wire rope 43 through rotation;

the counterweight wheel 33 is fixed at the top of the counterweight 31 and drives the counterweight 31 to move up and down;

it is characterized in that the preparation method is characterized in that,

a support clapboard 14 is arranged between the elevator hoistway 11 and the counterweight hoistway 12;

the counterweight guide wheel 32 includes:

a pulley 321 movably engaged with a cylindrical shaft fixed to the pulley frame 322;

a pulley yoke 322 movably matched with the bolt 323;

the bolt 323 is fixedly connected to the first profile 131 by two nuts.

The bolt 233 is fixed on the bearing beam 13 through a nut, a bolt hole is formed in one end, far away from the nut, of the bolt 233, and a bolt is fixed in the bolt hole.

The counterweight lifting component 3 at least comprises two counterweight wheels 33, and the two counterweight wheels 33 are fixedly arranged on the top of the counterweight.

The two counterweight wheels 33 are arranged on the counterweight 31 in a parallel and staggered manner, and the staggered distance of the two counterweight wheels 33 on the horizontal plane is equal to the diameter and the length of the counterweight guide wheel 32.

The counterweight guide wheel 32 is fixed on the first section bar 131, and one end of the steel wire rope 43 led out from the counterweight wheel 33 is fixed on the second section bar 132.

The elevator lifting assembly 2 comprises at least two box top wheels 22 and at least two box body guide wheels 23, the box top wheels 22 are respectively fixed at two ends of the elevator box body 21 along the direction of the bearing beam 13, and the two box body guide wheels 23 are positioned between the two box top wheels 22 in the horizontal direction.

One end of the diameter of the traction sheave 42 in the horizontal plane is at a distance of zero in the horizontal direction from one end of the diameter of the counterweight sheave 33 in the horizontal plane; the other end of the diameter of the traction sheave 42 in the horizontal plane is at a distance of zero in the horizontal direction from the end of the diameter of the roof sheave 22 in the horizontal plane near the counterweight 31.

The distance between one end of the diameter of the box top wheel 22 close to the counterweight 31 on the horizontal plane and the end of the diameter of the box body guide wheel 23 on the horizontal plane, which is far away from the counterweight 31, on the horizontal plane is zero; the end of the diameter of the box top wheel 22 on the horizontal plane, which is far away from the counterweight 31, is at zero distance in the horizontal direction from the end of the diameter of the other box guide wheel 23 on the horizontal plane.

The traction machine 41 is selected from one of an asynchronous traction machine and a synchronous traction machine.

Claims

1. A traction elevator, comprising:

The shaft (1) provides installation locations for the elevator lift assembly (2), the counterweight lift assembly (3) and the power assembly (4);

The elevator lift assembly (2) is installed in the hoistway (1) and moves up and down under the action of the power assembly (4);

The counterweight lifting assembly (3) is installed in the hoistway (1), and balances the gravity of the elevator lifting assembly (2) through the wire rope (43);

The power assembly (4) is installed in the hoistway (1), and provides the lift power for the elevator lift assembly (2);

The well (1) includes:

The elevator shaft (11) provides space for the elevator box (21) to move up and down;

The counterweight shaft (12) provides space for the counterweight (31) to move up and down;

The load-bearing beam (13) is composed of a first section bar (131) and a second section bar (132) arranged in parallel, and is fixedly installed on the top of the elevator shaft (11) and the counterweight shaft (12), which is the elevator The lifting assembly (2), the counterweight lifting assembly (3) and the power assembly (4) provide installation positions;

The power assembly (4) includes:

A traction machine (41), fixed on the load-bearing beam (13), provides kinetic energy for the movement of the elevator box (21);

The traction sheave (42) is fixed on the traction machine (41), and outputs the power output by the traction machine (41) through the wire rope (43);

The wire rope (43) is fixed on the load-bearing beam (13) at both ends respectively, and the power transmission pulley rotates;

The elevator lifting assembly (2) includes:

The elevator box (21) is suspended in the elevator shaft (11) for carrying people or goods;

A box top wheel (22) is fixedly installed on the top of the elevator box (1), and controls the movement direction of the elevator box (21) by rotating;

The box guide wheel (23) is fixedly installed on the load-bearing beam (13), and changes the direction of the force on the wire rope (43) by rotating;

The counterweight lifting assembly (3) includes:

The counterweight (31) is suspended in the counterweight shaft (12) for balancing the weight of the elevator box (21);

The counterweight guide wheel (32) is fixedly installed on the load-bearing beam (13), and changes the direction of the force on the wire rope (43) by rotating;

A counterweight wheel (33), fixed on the top of the counterweight (31), drives the counterweight (31) to move up and down;

It is characterized in that,

A bracket partition (14) exists between the elevator shaft (11) and the counterweight shaft (12);

The counterweight guide wheel (32) includes:

The pulley (321) is movably matched with the cylindrical shaft fixed on the pulley frame (322);

The pulley frame (322) is movably matched with the bolt (323);

The bolt (323) is fixedly connected to the first profile (131) through two nuts.

2 . The traction elevator according to claim 1 , wherein the bolt ( 233 ) is fixed on the load-bearing beam ( 13 ) through a nut, and the bolt ( 233 ) is provided at one end away from the nut. 3 . There is a pin hole, and a pin is fixed in the pin hole.

3. A traction elevator according to claim 1, characterized in that, the counterweight lifting assembly (3) at least comprises two counterweight wheels (33), two counterweight wheels (33), The heavy wheel (33) is fixedly installed on the top of the counterweight.

4. A traction elevator according to claim 2, characterized in that the two counterweight wheels (33) are arranged on the counterweight (31) in parallel and staggered, and the two counterweight wheels ( 33) The staggered distance on the horizontal plane is equal to the diameter of the counterweight guide wheel (32).

5. A traction elevator according to claim 1, characterized in that the box guide wheel (23) is fixed on the first profile (131), and the steel wire rope (43) extends from the The lead-out end of the counterweight wheel (33) is fixed on the second profile (132).

6. A traction elevator according to claim 1, characterized in that the elevator lift assembly (2) comprises at least two of the box top pulleys (22) and at least two of the box Body guide wheels (23), the box top wheels (22) are respectively fixed at both ends of the elevator box (21) along the direction of the load-bearing beam (13), the two box body guide wheels (23) is located in the middle of the two box top wheels (22) in the horizontal direction.

7. A traction elevator according to claim 1, characterized in that, one end of the diameter of the traction sheave (42) on the horizontal plane is in a horizontal direction with a counterweight wheel (33) The distance from one end of the diameter on the horizontal plane is zero; the other end of the diameter of the traction sheave (42) on the horizontal plane is in the horizontal direction with the box top wheel (22) close to the counterweight (31). ) is at a distance of zero from one end of the diameter in the horizontal plane.

8. A traction elevator according to claim 1, characterized in that, the diameter of the box top wheel (22) close to the counterweight (31) on the horizontal plane is far from the counterweight (31). The distance between one end of the box guide wheel (23) in the horizontal direction and one end of the diameter of the box guide wheel (23) on the horizontal plane is zero; the box top wheel (22) away from the counterweight (31) is on the horizontal plane. The distance between one end of the diameter of the other box guide wheel (23) in the horizontal direction and the end of the diameter of the other box guide wheel (23) on the horizontal plane is zero.

9 . The traction elevator according to claim 1 , wherein the traction machine ( 41 ) is selected from an asynchronous traction machine or a synchronous traction machine. 10 .