CN113023525A

CN113023525A - Compact home elevator

Info

Publication number: CN113023525A
Application number: CN202110400198.2A
Authority: CN
Inventors: 黄军; 胡先博
Original assignee: Sichuan Fulangji Construction Engineering Co ltd
Current assignee: Sichuan Fulangji Construction Engineering Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-06-25

Abstract

The invention provides a compact home elevator which comprises a lift car, a support frame and a transmission mechanism, wherein a horizontal fixed beam is arranged at the top of the support frame, a horizontal movable beam is arranged below the fixed beam, a vertical guide post is arranged on the support frame, the movable beam is in sliding fit with the guide post, and the movable beam is connected with a lifting driving mechanism; the transmission mechanism comprises a bearing rope, a diversion sheave, a plurality of upper guide wheels arranged on the fixed beam and a plurality of lower guide wheels arranged on the movable beam, the number of the upper guide wheels is one less than that of the lower guide wheels, the diversion sheave is arranged above the upper guide wheels, one end of the bearing rope is fixedly connected to the top of the lift car, and the other end of the bearing rope passes through the diversion sheave and then alternately passes through all the lower guide wheels and the upper guide wheels and is fixed on a support frame above the upper guide wheels or a building. The elevator shaft lifting driving mechanism can be compactly arranged at the lower part of the elevator shaft, the occupied space is small, the construction difficulty is reduced, the implementation cost is low, and the follow-up maintenance is convenient.

Description

Compact home elevator

Technical Field

The invention relates to the field of elevators, in particular to a compact household elevator.

Background

The household elevator is limited in installation space, and is difficult to meet requirements of lifting height, space utilization rate and the like, at present, a plurality of elevators are required to be provided with counterweights, for example, CN00803009 discloses a traction wheel type elevator, a traction wheel set is adopted to traction the elevator and the counterweights, load is very large during operation, the requirement on strength of each component is high, the manufacturing cost is high, and the lifting height cannot be increased. CN200480033812 discloses an elevator pulley device, which has a large number of pulley blocks, a complex structure, a high installation difficulty, a high implementation cost, and a complex wire winding of a steel wire rope, and is easily clamped by friction.

Disclosure of Invention

The invention aims to solve the technical problem of providing a compact household elevator which has small volume, simple structure and low implementation cost.

The technical scheme adopted by the invention for solving the technical problems is as follows: a compact household elevator comprises a lift car, a support frame and a transmission mechanism,

a horizontal fixed beam is arranged at the top of the support frame, a horizontal movable beam is arranged below the fixed beam, a vertical guide post is arranged on the support frame, the movable beam is in sliding fit with the guide post, and the movable beam is connected with a lifting driving mechanism;

the transmission mechanism comprises a bearing rope, a diversion sheave, a plurality of upper guide wheels arranged on the fixed beam and a plurality of lower guide wheels arranged on the movable beam, the number of the upper guide wheels is one less than that of the lower guide wheels, the diversion sheave is arranged above the upper guide wheels, one end of the bearing rope is fixedly connected to the top of the lift car, and the other end of the bearing rope passes through the diversion sheave and then alternately passes through all the lower guide wheels and the upper guide wheels and is fixed on a support frame above the upper guide wheels or on a building.

Further, lift actuating mechanism includes motor, reduction gear, lead screw and nut, the motor links to each other with the reduction gear, the nut is installed in the walking beam, the vertical setting of lead screw and with nut screw-thread fit, and the upper end of lead screw rotationally installs in the fixed beam, and the lower extreme links to each other with the reduction gear.

Further, the lifting driving mechanism is a hydraulic cylinder.

Furthermore, the upper guide wheel is arranged on the upper surface of the fixed beam, the axial direction of the upper guide wheel is consistent with the length direction of the fixed beam, and the outer diameter of the upper guide wheel is larger than the width of the fixed beam; the lower guide wheel is arranged on the lower surface of the movable beam, the axial direction of the lower guide wheel is consistent with the length direction of the movable beam, and the outer diameter of the lower guide wheel is larger than the width of the movable beam.

Further, each upper guide wheel is positioned between two adjacent lower guide wheels.

Furthermore, the number of the upper guide wheels is at least 3, and the number of the lower guide wheels is at least 4.

The invention has the beneficial effects that: 1. the lower guide wheels are actually movable pulleys, when the lifting driving mechanism drives the movable beam to ascend or descend by a certain height, all the lower guide wheels also ascend or descend by a certain height, according to the characteristics of the movable pulley blocks, one end, connected with the car, of the bearing rope can move downwards under the gravity of the car or upwards under the pulling of the bearing rope, the movement distance of the end part of the bearing rope is approximately equal to a plurality of times of the movement distance of the lower guide wheels, the specific times are related to the number of the lower guide wheels, therefore, the lifting driving mechanism only needs to drive the movable beam to ascend or descend by a larger height by a shorter distance, the lifting height of the car can be improved on the premise that the total height and the volume of the support frame and the transmission mechanism are smaller, the space is saved, and the whole system is more compact. 2. Due to the characteristics of the movable pulleys, the weight of the lift car is dispersed onto a plurality of lower guide wheels, the load of the bearing ropes on two sides of the lower guide wheels is reduced, and the safety is better.

Drawings

FIG. 1 is a schematic front view of a first embodiment of the present invention;

FIG. 2 is a schematic front view of a second embodiment of the present invention;

fig. 3 is a schematic view of the connection of the car to the transmission;

reference numerals: 1-a car; 2, a guide post; 3, fixing the beam; 4, a movable beam; 5, an upper guide wheel; 6-lower guide wheel; 7-a load-bearing rope; 8-a diverting pulley; 9, a motor; 10-a reducer; 11-a screw rod; 12-a nut; 13-hydraulic cylinder.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example one

As shown in fig. 1 and 2, the compact home elevator of the present invention includes a car 1, a support frame and a transmission mechanism, wherein the support frame adopts a conventional frame structure, not shown in the figure, and the car 1 can be slidably engaged with the support frame to ensure that the car 1 can slide up and down along the support frame. In addition, the support frame is also used for supporting the drive mechanism, specifically:

the top of support frame is provided with horizontally fixed beam 3, and fixed beam 3 fixes the well upper portion at the support frame through modes such as welding or bolted connection, the below of fixed beam 3 is provided with horizontally walking beam 4, and walking beam 4 can the roof beam that goes up and down, is located the lower part of support frame, be provided with vertical guide post 2 on the support frame, walking beam 4 and guide post 2 sliding fit, guide post 2 play the effect of direction, ensure that fixed beam 3 moves in vertical direction, fix a position walking beam 4 simultaneously. The movable beam 4 is connected with a lifting driving mechanism, and the lifting driving mechanism is used for pushing the movable beam 4 to lift and is also used as power for lifting the lift car 1.

The elevating movement of walking beam 4 passes through drive mechanism and transmits to car 1 to drive car 1 and go up and down, specifically, drive mechanism includes bearing rope 7, diversion sheave 8, a plurality of upper guide 5 and a plurality of lower guide 6 of setting on walking beam 4 of setting on fixed beam 3, and bearing rope 7 adopts the rope of high strength such as wire rope, in order to guarantee sufficient bearing capacity, improves the security of elevator operation. The diverting pulley 8 plays a guiding role. The number of the upper guide wheels 5 is one less than that of the lower guide wheels 6, the diversion wheels 8 are arranged above the upper guide wheels 5, one end of the bearing rope 7 is fixedly connected to the top of the lift car 1, and the other end of the bearing rope passes through the diversion wheels 8 and then alternately passes through all the lower guide wheels 6 and the upper guide wheels 5 and then is fixed on a support frame above the upper guide wheels 5 or a building.

One end of the bearing rope 7 is fixedly connected with the top of the lift car 1 and is a free end with variable height, the other end of the bearing rope is fixed on the top of the support frame or on the building of the highest floor and is a fixed end with constant height all the time, the upper guide wheel 5 is a group of fixed pulleys, the lower guide wheel 6 is actually a group of movable pulleys, according to the characteristic of labor saving but not distance saving of the movable pulley group, when the free end of the bearing rope 7 is pulled to ascend and descend for a certain distance, the movable pulleys also ascend and descend, the ascending and descending height of the movable pulleys is about one part of the ascending and descending height of the free end, the invention aims at the characteristic of the movable pulleys, the lifting driving mechanism is utilized to push the lower guide wheel 6 on the movable beam 4 to ascend and descend, the lower guide wheel 6 drives the free end of the bearing rope 7 to ascend and descend, and descend the ascending and descending height of the, therefore, the car 1 can be driven to move a larger distance only by driving the lower guide wheel 6 to move a smaller distance, for example, the height of each floor of a building is 3m, the car 1 is to reach

floors

1, 2 and 3, the maximum lifting height of the car 1 is from floor 1 to floor 3, the distance is about 6m, if 4

lower guide wheels

6 and 3 upper guide wheels 5 are adopted, the lifting height of the lower guide wheels 6 is about one eighth of the lifting height of the car 1, the height of the car 1 is to be lifted by 6m, the lower guide wheels 6 only need to be lifted by 0.75m, the distance from the lower guide wheels 6 to the upper guide wheels 5 is greater than 0.75m, and the height of the whole transmission mechanism and the lifting driving mechanism can be controlled within a range of not higher than 1.5m of floor 1 (part parts need to be located below floor 1).

Therefore, the elevator shaft can effectively reduce the space occupied by the transmission mechanism and the lifting driving mechanism, the transmission mechanism and the lifting driving mechanism can be more compactly arranged in the space at the middle lower part of the elevator shaft, the subsequent maintenance is convenient, and the like, in addition, the lower guide wheel 6 and the upper guide wheel 5 can be uniformly distributed, the structure is relatively simple, the installation difficulty is low, and the implementation cost is reduced.

The lifting driving mechanism comprises a motor 9, a speed reducer 10, a screw rod 11 and a nut 12, the motor 9 is connected with the speed reducer 10, the nut 12 is installed in the movable beam 4, the screw rod 11 is vertically arranged and is in threaded fit with the nut 12, the upper end of the screw rod 11 is rotatably installed on the fixed beam 3, and the lower end of the screw rod is connected with the speed reducer 10. The motor 9 drives the screw rod 11 to rotate through the speed reducer 10, the screw rod 11 pushes the nut 12 to lift under the action of the threads, the nut 12 drives the movable beam 4 to lift, and the lower guide wheel 6 on the movable beam 4 lifts along with the movable beam 4, so that the lift car 1 is driven to lift.

The upper guide wheel 5 can be arranged on the side surface of the fixed beam 3, preferably, the upper guide wheel 5 is arranged on the upper surface of the fixed beam 3, the axial direction of the upper guide wheel 5 is consistent with the length direction of the fixed beam 3, and the outer diameter of the upper guide wheel 5 is larger than the width of the fixed beam 3; the lower guide wheel 6 is arranged on the lower surface of the movable beam 4, the axial direction of the lower guide wheel 6 is consistent with the length direction of the movable beam 4, and the outer diameter of the lower guide wheel 6 is larger than the width of the movable beam 4. Go up guide pulley 5 and install behind the upper surface of fixed beam 3, the effort of bearing rope 7 passes through the vertical downward transmission of last guide pulley 5 to fixed beam 3, and is same, and the vertical upward transmission of the effort of lower guide pulley 6 is to walking beam 4, avoids the effort that walking beam 4 and fixed beam 3 both sides received inhomogeneous and produce the moment of torsion etc. improve fixed beam 3 and walking beam 4's life. In addition, since the outer diameter of the upper guide wheel 5 is greater than the width of the fixed beam 3 and the outer diameter of the upper guide wheel 5 is greater than the width of the fixed beam 3, the arrangement of the load-bearing ropes 7 is not interfered.

Each upper guide wheel 5 is positioned between two adjacent lower guide wheels 6, the upper guide wheels 5 are uniformly arranged on the fixed beam 3, and the lower guide wheels 6 are uniformly arranged on the movable beam 4, so that the bearing ropes 7 are uniformly stressed.

The number of the upper guide wheels 5 is at least 3, the number of the lower guide wheels 6 is at least 4, the larger the number of the lower guide wheels 6 and the upper guide wheels 5 is, the higher the height of the car 1 can be lifted, and the specific number is determined according to the height of a floor.

Example two

As shown in fig. 2 and 3, the lifting driving mechanism of the present embodiment is a hydraulic cylinder 13, and the rest of the structure is the same as that of the first embodiment.

The traditional movable pulley block has the characteristic of saving labor but not saving distance, and the invention needs to realize the distance saving, so the effect of saving labor cannot be achieved, therefore, the acting force born by the lifting driving mechanism at least comprises the gravity of the lift car 1, the movable beam 4, the bearing rope 7 and the lower guide wheel 6, and the friction force born by the bearing rope 7, the total load is larger, the requirement on the lifting driving mechanism is higher, and therefore, the lifting driving mechanism of the embodiment is a hydraulic cylinder 13.

Although the hydraulic cylinder 13 is a common lifting mechanism, the hydraulic cylinder is rarely used as a lifting driving mechanism of an elevator, because the stroke of the hydraulic cylinder 13 is limited and the hydraulic cylinder has a long length, and the lifting height of a household elevator often exceeds the maximum stroke of the hydraulic cylinder, such as a building with 4 floors, the floor height is 3m, the maximum lifting height of the elevator is about 9m, the conventional hydraulic cylinder is difficult to meet the requirement, and even if the requirement can be met, the length of the hydraulic cylinder is large, and a large installation space is needed.

And this application has the characteristics of saving the distance but not laborsaving, the hypothesis needs be 6 floors's building installation elevator, floor height 3m, the biggest lifting height of elevator is from floor 1 to floor 6, the biggest lifting distance is about 15m, if adopt 5 lower guide wheels 6, the biggest lifting height of lower guide wheel 6 is about one tenth of the biggest lifting distance of car 1, only need drive lower guide wheel 6 go up and down 1.5m can, if adopt 6 lower guide wheels 6, only need drive lower guide wheel 6 go up and down 1.25m can, pneumatic cylinder 13 can satisfy the requirement completely, can not occupy too big space, and the bearing capacity and the reliability of pneumatic cylinder 13 are higher than the lead screw nut mechanism of embodiment one kind far away, therefore the security is higher.

The hydraulic cylinder 13 may be a single one, which is vertically arranged, and the end of the piston rod is directly and fixedly connected with the middle part of the movable beam 4, or is connected with the middle part of the movable beam 4 through a connecting piece. The number of the hydraulic cylinders 13 may be two, and the two hydraulic cylinders are respectively provided at both ends of the movable beam 4.

In conclusion, the elevator shaft can realize that the lifting driving mechanism and the transmission structure are compactly arranged at the lower part of the elevator shaft, the occupied space is small, the construction difficulty is reduced, the implementation cost is low, and the follow-up maintenance is convenient.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Compact home use elevator, including car (1), support frame and drive mechanism, its characterized in that:

a horizontal fixed beam (3) is arranged at the top of the support frame, a horizontal movable beam (4) is arranged below the fixed beam (3), a vertical guide post (2) is arranged on the support frame, the movable beam (4) is in sliding fit with the guide post (2), and the movable beam (4) is connected with a lifting driving mechanism;

drive mechanism includes bearing rope (7), diversion sheave (8), a plurality of last guide pulley (5) and a plurality of lower guide pulley (6) of setting on walking beam (4) of setting on fixed beam (3), the quantity of going up guide pulley (5) is less by one than the quantity of lower guide pulley (6), diversion sheave (8) set up the top at last guide pulley (5), the one end fixed connection of bearing rope (7) is at the top of car (1), and the other end passes through behind diversion sheave (8) and passes through all lower guide pulley (6) and last guide pulley (5) in turn, then fixes on the support frame or the building of last guide pulley (5) top.

2. The compact home elevator according to claim 1, characterized in that: lifting drive mechanism includes motor (9), reduction gear (10), lead screw (11) and nut (12), motor (9) link to each other with reduction gear (10), install in walking beam (4) nut (12), lead screw (11) vertical setting and with nut (12) screw-thread fit, and the upper end of lead screw (11) rotationally installs in fixed beam (3), and the lower extreme links to each other with reduction gear (10).

3. The compact home elevator according to claim 1, characterized in that: the lifting driving mechanism is a hydraulic cylinder (13).

4. The compact home elevator according to claim 1, characterized in that: the upper guide wheel (5) is arranged on the upper surface of the fixed beam (3), the axial direction of the upper guide wheel (5) is consistent with the length direction of the fixed beam (3), and the outer diameter of the upper guide wheel (5) is larger than the width of the fixed beam (3); the lower guide wheel (6) is arranged on the lower surface of the movable beam (4), the axial direction of the lower guide wheel (6) is consistent with the length direction of the movable beam (4), and the outer diameter of the lower guide wheel (6) is larger than the width of the movable beam (4).

5. The compact home elevator according to claim 4, characterized in that: each upper guide wheel (5) is positioned between two adjacent lower guide wheels (6).

6. The compact home elevator according to claim 1, characterized in that: the number of the upper guide wheels (5) is at least 3, and the number of the lower guide wheels (6) is at least 4.