Traction type platform elevator

Abstract

A traction type platform elevator comprises a platform and a hoistway, a mounting frame is arranged on the right side of the hoistway, a traction machine is arranged on the mounting frame, a fifth guide wheel is arranged on the right side of the traction machine, a sixth guide wheel is arranged on one side of the fifth guide wheel, a counterweight device is arranged below the traction machine, a diversion sheave is arranged on the counterweight device, and a traction rope is arranged on the diversion sheave. The second ends of the two steel wire ropes sequentially wind around the fifth guide wheel, the sixth guide wheel and the diversion sheave and then are connected to one fixed end. The second ends of the two steel wire ropes bypass the guide wheels and then change the rope winding path through the diversion sheaves to form the rope winding ratio of 2: 1, namely the moving distance of the counterweight device is half of the moving distance of the steel wire ropes and the platform, so that the counterweight device moves in the range of the lower half part of the hoistway, the top area of the hoistway is released, and the requirement that the platform directly reaches the roof is met.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to elevators, especially a traction platform lift. Background Technology

[0002] Traditional traction lifts (such as elevators) achieve vertical transportation by driving steel cables with a traction machine. They typically employ a car and counterweight balancing system, where the car and counterweight are connected by a 1:1 steel cable ratio. However, in this configuration, the travel distances of the car and counterweight are equal, and their movement range covers the entire shaft height. When the car needs to reach the top floor, the counterweight must move to the top of the shaft, requiring a large space above the shaft to accommodate the counterweight and related components. This limits the actual lifting height of the car, making it impossible to meet the requirements of high-rise buildings that allow direct lifting of the platform to the roof level. Utility Model Content

[0003] The purpose of this utility model is to provide a traction platform elevator to solve the technical problem in the prior art where a large space needs to be reserved in the upper part of the shaft to accommodate the counterweight device and related components, which limits the actual lifting height of the car.

[0004] This utility model provides a traction platform lift, including a platform and a shaft. Guide rails are provided on both sides of the shaft, and guide shoes are provided on both sides of the platform, cooperating with the guide rails. A mounting frame is provided on the right side of the shaft, and a traction machine is mounted on the mounting frame. A first guide wheel is provided on each side of the top of the shaft, and a second guide wheel is provided on each side of the bottom of the shaft. Two vertically arranged third guide wheels are provided on the left side of the traction machine, a fourth guide wheel is provided below the traction machine, a fifth guide wheel is provided on the right side of the traction machine, and a sixth guide wheel is provided on one side of the fifth guide wheel. A counterweight device is installed below the machine, and a reversing rope pulley is installed on the counterweight device. The traction machine includes a traction sheave, on which two steel wire ropes are wound. The first end of one steel wire rope passes through the fourth guide pulley, the upper third guide pulley, and the right first guide pulley in sequence before being fixedly connected to the platform. The first end of the other steel wire rope passes through the fourth guide pulley, the lower third guide pulley, the two second guide pulleys, and the left first guide pulley in sequence before being fixedly connected to the platform. The second ends of the two steel wire ropes pass through the fifth guide pulley, the sixth guide pulley, and the reversing rope pulley in sequence before being connected to a fixed end, which is fixed relative to the shaft.

[0005] Furthermore, the top of the well is provided with a well cover plate and a cylinder, the piston rod of the cylinder is hinged to the well cover plate, and the cylinder body is hinged to the side wall of the well.

[0006] Compared with existing technologies, this invention offers positive and significant advantages. On one side of the platform, the first ends of two steel wire ropes bypass the guide wheels and connect directly to the platform, creating a 1:1 rope ratio, meaning the platform's movement distance is equal to the steel wire rope's movement distance. On the side of the counterweight device, the second ends of the two steel wire ropes bypass the guide wheels and change the rope path via a reversing pulley, creating a 2:1 rope ratio. This means the counterweight device's movement distance is half the combined movement distance of the steel wire ropes and the platform, allowing the counterweight device to move within the lower half of the shaft, thereby freeing up the top area of ​​the shaft and enabling the platform to directly reach the roof. Attached Figure Description

[0007] Figure 1 This is a front view schematic diagram of a traction platform elevator according to the present invention.

[0008] Figure 2 This is a side view schematic diagram of a traction platform elevator according to the present invention.

[0009] Figure 3 This is a top view schematic diagram of a traction platform elevator according to the present invention.

[0010] Figure 4 This is a schematic diagram of a manhole cover plate in a traction platform elevator according to the present invention. Detailed Implementation

[0011] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0012] like Figures 1-4As shown, this utility model provides a traction platform lift, including a platform 1 and a shaft 2. Guide rails 15 are respectively provided on both sides of the shaft 2, and guide shoes are respectively provided on both sides of the platform 1, with the guide shoes cooperating with the guide rails 15. A mounting frame is provided on the right side of the shaft 2, and a traction machine 3 is mounted on the mounting frame. A first guide wheel 4 is provided on each side of the top of the shaft 2, and a second guide wheel 5 is provided on each side of the bottom of the shaft 2. Two third guide wheels 6 are arranged vertically on the left side of the traction machine 3, a fourth guide wheel 7 is provided below the traction machine 3, a fifth guide wheel 8 is provided on the right side of the traction machine 3, and a sixth guide wheel is provided on one side of the fifth guide wheel 8. 9. A counterweight device 10 is provided below the traction machine 3. A counter-rope pulley 11 is provided on the counterweight device 10. The traction machine 3 includes a traction pulley, on which two steel wire ropes 12 are wound. The first end of one steel wire rope 12 passes through the fourth guide pulley 7, the upper third guide pulley 6, and the right first guide pulley 4 in sequence before being fixedly connected to the platform 1. The first end of the other steel wire rope 12 passes through the fourth guide pulley 7, the lower third guide pulley 6, the two second guide pulleys 5, and the left first guide pulley 4 in sequence before being fixedly connected to the platform 1. The second ends of the two steel wire ropes 12 pass through the fifth guide pulley 8, the sixth guide pulley 9, and the counter-rope pulley 11 in sequence before being connected to a fixed end. The fixed end is fixed relative to the shaft 2.

[0013] Furthermore, the top of the well 2 is provided with a well cover plate 13 and a cylinder 14. The piston rod of the cylinder 14 is hinged to the well cover plate 13, and the cylinder body of the cylinder 14 is hinged to the side wall of the well 2.

[0014] Specifically, the specific structure and principle of the guide rail 15, guide shoe, traction machine 3, guide wheel, counterweight device 10, cylinder 14 in this utility model, as well as other aspects not described in detail, all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0015] The working principle of this utility model:

[0016] When platform 1 needs to be moved to the roof, the operating cylinder 14 drives the manhole cover 13 to open, and the traction machine 3 drives platform 1 to the roof via the wire rope 12.

[0017] On one side of platform 1, the first ends of the two steel wire ropes 12 are directly connected to platform 1 after passing over each guide wheel, forming a 1:1 rope winding ratio, meaning that the moving distance of platform 1 is equal to the moving distance of steel wire rope 12. On one side of counterweight device 10, the second ends of the two steel wire ropes 12 are passed over each guide wheel and then the winding path is changed by the anti-rope pulley 11 (movable pulley), forming a 2:1 rope winding ratio, meaning that the moving distance of counterweight device 10 is half the moving distance of steel wire rope 12 and platform 1, allowing counterweight device 10 to move within the lower half of shaft 2, thereby releasing the top area of ​​shaft 2 and meeting the requirement of platform 1 directly reaching the roof.

Claims

1. A traction platform lift, characterized in that, The system includes a platform and a shaft. Guide rails are installed on both sides of the shaft, and guide shoes are installed on both sides of the platform. The guide shoes cooperate with the guide rails. A mounting frame is located on the right side of the shaft, and a traction machine is mounted on the mounting frame. A first guide wheel is located on each side of the top of the shaft, and a second guide wheel is located on each side of the bottom of the shaft. Two third guide wheels, arranged vertically, are located on the left side of the traction machine. A fourth guide wheel is located below the traction machine. A fifth guide wheel is located on the right side of the traction machine, and a sixth guide wheel is located to one side of the fifth guide wheel. A counterweight is located below the traction machine. The counterweight device is equipped with a reversing sheave. The traction machine includes a traction sheave with two wire ropes wound on it. The first end of one wire rope passes through the fourth guide sheave, the upper third guide sheave, and the right first guide sheave in sequence before being fixedly connected to the platform. The first end of the other wire rope passes through the fourth guide sheave, the lower third guide sheave, the two second guide sheaves, and the left first guide sheave in sequence before being fixedly connected to the platform. The second ends of the two wire ropes pass through the fifth guide sheave, the sixth guide sheave, and the reversing sheave in sequence before being connected to a fixed end, which is fixed relative to the shaft.

2. A traction drive platform lift according to claim 1, wherein, The top of the well is equipped with a well cover plate and a cylinder. The piston rod of the cylinder is hinged to the well cover plate, and the cylinder body is hinged to the side wall of the well.

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