CN201385974Y - A top-mounted traction drive construction hoist - Google Patents

Abstract

The utility model relates to a top-mounted traction transmission construction hoist, which belongs to the field of lifting machinery. The design adopts a wire rope traction transmission mode, a single-column double-cage configuration, and the two suspension cages are respectively placed on both sides of the main frame, and the suspension cage passes through one side. The pulley moves up and down along the angle steel guide rail on one side of the main frame. There is a counterweight pulley guide rail inside the main frame. Connect with the corresponding counterweight. After bypassing the respective rope grooves on the traction sheave, connect with the top of the cage on the corresponding side for balanced suspension. The tensile strength of the traction wire rope is ≥1570N/mm, and the safety factor is ≥14.8. The heavy weight is the weight of the cage plus 0.4-0.5 times the rated load of the cage. The counterweight is used to balance the weight of the cage and nearly half of the rated load, which greatly reduces the actual required driving power. It has a compact overall structure and a mechanical structure. Reasonable, energy-saving and consumption-reducing, stable and safe operation and other outstanding features.

Description

A top-mounted traction drive construction hoist

technical field

The utility model relates to a top-mounted traction drive construction elevator, which belongs to the field of lifting machinery, and in particular relates to a construction elevator for dual-purpose vertical transportation of people and goods.

Background technique

At present, the dual-purpose vertical transport machinery for people and goods used in the construction site of high-rise buildings is the mainstream of rack and pinion transmission elevators, which is a mature technical product. However, this type of rack and pinion transmission elevators has many shortcomings. :

1. For this type of transmission elevator, the up and down movement of the cage along the main frame of the elevator is completed by rack and pinion transmission. On the one hand, racks are continuously installed on the main frame connected by units-standard joints that are hundreds of meters high , high precision requirements, high rack components and cost, and the elevator inevitably has problems such as large vibration and noise during operation. On the other hand, as a rack and pinion mechanism used in the long-term open-air environment Influenced by meteorological factors, the rack and pinion will be worn and corroded, which will affect the safety of the whole machine, and even lead to major accidents due to falling. In addition, the rack and pinion transmission mode, its driving and transmission mechanism itself The top generally adopts a double-drive or three-drive mechanism, and each cage is equipped with 2 to 3 11KW motors. The weight of the mechanism becomes the load of the elevator, and it runs up and down together with the cage, resulting in large power consumption and high energy consumption. The mechanical efficiency is low, the manufacturing cost is high, and the maintenance cost is high.

2. For this type of transmission elevator, the connection between the cage and the main frame is "one-side hanging type", and the cage is connected to one side of the main frame of the elevator by its guide wheels. For the purpose of preventing one side of the cage from being deformed by force, the cage has high structural strength requirements, many materials, heavy weight, complicated production, and complicated inspection and maintenance of the track guide wheels.

Utility model content

The purpose of the utility model is to provide a top-mounted traction transmission construction elevator, which is highly efficient, energy-saving, safe, reliable, convenient for disassembly and assembly, and low in cost, and is suitable for building construction.

The utility model mainly includes a machine base, a main frame, a hanging cage, a wall frame, a height-connected workbench, a traction machine, a traction wire rope, a counterweight, a balance suspension, a control device and a safety device, etc. Bolts are fixed on the ground of the prefabricated foundation. The main frame is composed of unit standard joints connected one by one. The lower end of the main frame is fastened to the machine base with bolts. The height-connected workbench is set outside the main frame through guide wheels, and is driven upward along the main frame by hydraulic pressure. Or down, the characteristic is that the main chord angle steel at the four corners of the main frame is the guide rail of the pulley of the cage, and the cage moves up and down along the main chord angle steel guide rail of one side of the main frame through the pulley on one side. The weight moves up and down along the counterweight guide rail inside the main frame through its pulley. The top of the cage is equipped with a balance suspension, and a traction machine is positioned on the top of the main frame. One end of the traction wire rope is connected to the corresponding counterweight. After the respective rope grooves on the wheels, they are connected to the top of the cage on the corresponding side for balanced suspension.

The above-mentioned traction machine is composed of a motor, a reducer, a traction wheel, a wire rope drum, a bearing seat of the output shaft of the reducer, and a traction frame with rollers. The wire rope drum is installed on the output shaft of the reducer through a bearing. When the traction sheave is connected with bolts, the wire rope drum rotates together with the traction sheave, and when the wire rope drum and the traction sheave are unbolted, the wire rope drum stands still and does not rotate.

The above-mentioned balance suspension is composed of a suspension frame, a weight limiter, a compression spring adjustment lever, a compression spring, a connecting rod, and a balance arm. Two balance arms are respectively connected above the suspension frame, and each balance arm is connected with two lock ropes. The wedge sleeve is connected with the weight limiter under the suspension frame.

The table top of the above-mentioned elevated workbench has a traction machine translation track, which is compatible with the traction frame rollers.

This design adopts wire rope traction transmission mode, single-column double-cage configuration, two cages are respectively placed on both sides of the main frame, and the pair is reset inside the main frame, the traction machine is installed on the top of the main frame of the elevator, and one end of the wire rope is connected Cage, the other end is connected to the counterweight, the tensile strength of the steel wire rope is ≥1570N/mm, the safety factor is ≥14.8, the weight of the counterweight is the weight of the cage plus 0.4-0.5 times the rated load of the cage, and the cage is balanced by the counterweight The weight and the weight of nearly half of the rated load greatly reduce the actual required driving power. It has the outstanding characteristics of compact overall structure, reasonable mechanical structure, energy saving and consumption reduction, stable and safe operation.

The traction wire ropes in this design are connected to the cage through balanced suspension. The tension of the four wire ropes can be self-balanced within a certain range without frequent adjustments. The weight limiter is used to detect and limit the actual loading weight of the cage. This design adopts the hydraulic jacking type main frame connected to the high workbench, and the hydraulic pressure is used as the lifting power, and the workbench is stable and reliable when it is raised and lowered. There is a track on the top surface of the workbench for the parallel movement of the traction machine. There are rollers on the base of the traction machine, so that the traction machine can slide along the track of the worktable through the rollers of the machine base. Both traction machines are designed with small wire ropes. The cylinder can be used to lift the standard section and the counterweight respectively, which is especially convenient for the installation or removal of the main frame standard section.

The applicant's prior patent (ZL 2006100185018) speed-limiting and anti-falling safety device is installed on the top of the elevator cage to ensure that the cage can be stopped reliably in the event of overspeeding or accidental fall.

Description of drawings

Fig. 1 structural representation of the utility model

Figure 2 Schematic diagram of the inner and outer guide rails of the main frame of the utility model

Fig. 3 schematic diagram of the utility model for connecting to a high workbench

Fig. 4 schematic diagram of traction machine of the utility model

Fig. 5 schematic diagram of balance suspension of the utility model

Detailed ways

Now further illustrate how the utility model is implemented in conjunction with the accompanying drawings:

The lift base 1 of the utility model is fixedly installed on the prefabricated foundation ground with anchor bolts. The main frame 2 is composed of unit standard sections 2-1 to 2-N connected by bolts one by one. The main frame is a single column type, and the main frame 2 The standard section of the lowest end unit is connected with the base frame 1 by bolts. The four main chord angle steels of the main frame 2 are also used as the guide rail 2A of the pulley of the hoisting cage 3. There is a guide rail 2B of the counterweight 8 inside the main frame 2. Each side has a hanging cage 3, and the hanging cage is inlaid on two guide rails 2A on one side of the main frame 2 by four pulleys, so that the hanging cage 3 can be kept on the main frame 2 and move up and down freely during work. Two sets of counterweights 8 are respectively inlaid on the guide rails 2B on both sides of the main frame 2 through pulleys. The counterweights 8 can move up and down along the guide rails 2B. At the top of the frame 2, there is a traction sheave 6C with a rope groove on the traction machine 6, the wire rope 7 bypasses the traction sheave 6C, one end is connected with the counterweight 8, and the other end is connected with the balance suspension 9 on the cage 3. When the cage 3 is at the bottom of the main frame 2, the counterweight 8 is located at the third unit standard section below the top of the main frame 2. When the elevator is working, the three-phase asynchronous motor 6A is braked by the conical rotor on the traction machine 6. The reducer 6B drives the traction sheave 6C to rotate, and is driven by the friction between the rope groove on the traction sheave 6C and the wire rope group 7 to drive the cage 3 up or down. When the motor rotates forward, the cage 3 goes up and counterweight 8 When the motor reverses, the cage 3 goes down and the counterweight 8 goes up. The balance suspension 9 is connected to the top of the cage 3 through a pin shaft. The traction wire rope 7 is composed of four wire ropes. The suspensions 9 are connected in one-to-one correspondence, and the balance arm 9F keeps the tension of the two steel wire ropes connected to it balanced with each other, while the compression spring adjustment rod 9C and compression spring 9D are used to adjust and balance the two connection rods 9E to realize four dragging The overall tension of the wire ropes is balanced with each other. The weight limiter 9B is used to detect and limit the actual loading weight of the cage 3 . The height-connecting workbench 5 of the elevator is set outside the main frame 2, and its guide wheels 5C are inlaid on the main chord angle steel guide rails 2A at the four corners of the main frame 2, and the height-connecting workbench 5 is raised and lowered along the main frame 2 through the hydraulic lifting device 5B. When it is necessary to install or disassemble the frame, first remove the connecting bolts between the traction machine 6 and the standard joint 2 at the top of the main frame, and operate the hydraulic jacking device 5B to lift the high workbench 5 upwards so that the high workbench 5 The parallel movement track 5D of the traction machine touches the roller 6F1 on the base of the traction machine, and lifts the traction machine 6 slightly, and the traction machine 6 can be pushed to move parallelly along the track 5D on the top surface of the workbench away from the main frame 2 , moved to the hydraulic jacking table, and then the standard section of the main frame 2 can be installed or removed. During dismounting, wire rope drum 6 and traction sheave 6C are connected and fixed with connecting bolt, connect the motor power supply of traction machine 6, can lift standard section 2 with the special wire rope on the wire rope drum 6D, install or dismantle. The motor power that connects another traction machine can be used for hoisting or falling counterweight 8.

The applicant's prior patent (ZL200610018501.8) speed-limiting anti-falling safety device is installed on the top of this elevator cage 3, to ensure that the cage can reliably stop when overspeeding or accidental fall accidents occur.

The utility model conforms to the national standard GB/T10054-2005.

Claims (4)

1, a kind of overhead type traction transmission building hoist, mainly comprise support, body frame, cage, the attached wall frame, connect the high workload platform, towing machine, traction steel-cable, counterweight, the balance suspention, control setup and safety device etc., support is fixed on prefabricated basic ground by holding-down bolt, body frame is connected by joint by the unit standard knot and forms, the body frame lower end connects with the support bolt up, connecing the high workload platform is set in outside the body frame by track adjusting wheel, by hydraulic-driven up or decline along body frame, it is characterized in that the main angle of chord steel of (2) four jiaos of body frames is the guide rail (2A) of cage pulley, cage (3) breaks away to take turns by one and moves up and down along body frame (2) one side master angle of chord steel guide rails (2A), body frame (2) inboard is provided with counterweight pulley guide rails (2B), counterweight (8) moves up and down along the inboard counterweight guide rail of body frame (2) (2B) by its pulley, balance suspention (9) is equipped with at cage (3) top, location and installation has towing machine (6) on body frame (2) top, traction steel-cable (7) one ends are connected with cooresponding counterweight (8), behind the grooving of walking around on the traction sheave (6C) separately, connect with cage (3) the top balance suspention (9) of a corresponding side.

2, a kind of overhead type traction transmission building hoist according to claim 1, it is characterized in that towing machine (6) is by motor (6A), retarder (6B), traction sheave (6C), steel wire rope roll (6D), reducer output shaft bearing seat (6E), the machine bed (6F) of band roller (6F1) is formed, steel wire rope roll (6D) by bearing installation on reducer output shaft, when steel wire rope roll (6D) and traction sheave (6C) Bolt Connection, steel wire rope roll (6D) together rotates with traction sheave (6C), when steel wire rope roll (6D) was removed Bolt Connection with traction sheave (6C), steel wire rope roll (6D) is static not to be changeed.

3, according to a kind of overhead type traction transmission building hoist of claim 1, it is characterized in that balance suspention (9) is made up of suspension (9A), freight weight limit device (9B), stage clip adjusting lever (9C), stage clip (9D), pipe link (9E), equilibrium arm (9F), suspension (9A) top connects two equilibrium arms (9F) respectively, each equilibrium arm respectively is connected with two lock rope covers of wedge (9G), is connected with freight weight limit device (9B) below suspension.

4, according to a kind of overhead type traction transmission building hoist of claim 1, it is characterized in that the table top that connects high workload platform (5) has towing machine translation track (5D), this track (5D) is suitable with machine bed roller (6F1).

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