CN215402746U

CN215402746U - Novel tower crane becomes width of cloth speed reduction device

Info

Publication number: CN215402746U
Application number: CN202121771813.2U
Authority: CN
Inventors: 姜海清; 高述振; 杜辉
Original assignee: Shandong Taiwokun Intelligent Equipment Co ltd
Current assignee: Shandong Taiwokun Intelligent Equipment Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-04
Anticipated expiration: 2031-08-02

Abstract

A novel tower crane amplitude-changing speed reducer relates to the technical field of tower crane equipment and comprises a motor, wherein a bearing is sleeved on the outer side of an output shaft of the motor and comprises a bearing inner ring and a bearing outer ring, the height of the bearing inner ring is greater than that of the bearing outer ring, the tops of the bearing inner ring and the bearing outer ring are parallel and level, the upper end and the lower end of the bearing are respectively connected with an upper sealing cover and a lower sealing cover through bolts, the upper sealing cover is connected with the bearing outer ring, the lower sealing cover is connected with the bearing inner ring, the output shaft of the motor is an eccentric shaft, a speed reducer is arranged on the outer side of the eccentric shaft and is positioned in the bearing inner ring, the utility model applies the characteristic of a direct-current servo motor, the starting rotating speed reaches the peak torque, the high integration enables the integrated transmission loss of the motor and the speed reducer to be smaller, thereby achieving the power consumption of only one third of the existing power consumption, and meanwhile, after the novel speed reducer and the torque motor are integrated, the weight of the equipment is greatly reduced.

Description

Novel tower crane becomes width of cloth speed reduction device

Technical Field

The utility model relates to the technical field of tower crane equipment, in particular to a novel tower crane amplitude-variable speed reducer.

Background

The tower crane is the most common hoisting equipment on the construction site, also called a tower crane, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction by using the extension (height) of one section and one section (called a standard section for short), the independent height of the tower crane can reach more than 40 meters due to the huge size of the tower crane, and a speed reducer is required to be equipped for ensuring the stability and safety in the hoisting process.

The existing tower crane luffing speed reducing mechanism adopts a common motor or a variable frequency motor, the rotating speed is low in the starting stage, the torque is small, the torque is increased along with the increase of the rotating speed, the required torque of the tower crane luffing speed reducer is maximum in the starting process, the torque of the common motor and the variable frequency motor is just the minimum in the starting stage, and the movement law is not met. Traditional width of cloth speed reducer motor and speed reducer separation, two are all heavier, and the total weight is about 200KG, needs two people to install the change simultaneously at least.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel tower crane amplitude-variable speed reducing device which can solve the technical problems that an existing tower crane amplitude-variable speed reducing mechanism is low in rotating speed in a starting stage by adopting a common motor or a variable frequency motor, small in torque and large in power consumption, a motor and a speed reducer of a traditional amplitude-variable speed reducer are separated, the two motors are heavy, the total weight is about 200KG, and at least two persons are required to install and replace simultaneously.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides a novel tower crane becomes width of cloth decelerator, includes the motor, the output shaft outside cover of motor is equipped with the bearing, the bearing includes bearing inner ring and bearing outer loop, the height of bearing inner ring is greater than the height of bearing outer loop, bearing inner ring and bearing outer loop top parallel and level, there are upper cover and lower closing cap at the upper and lower both ends of bearing respectively through bolted connection, upper cover is connected with the bearing outer loop, the closing cap is connected with the bearing inner ring down, the output shaft of motor is the eccentric shaft, the outside of eccentric shaft is provided with decelerator, decelerator is located the inside of bearing inner ring.

Preferably, the speed reducer comprises two fixed shafts, two fixed shaft fixing plates and two gears, the two gears are sleeved at the top of the eccentric shaft, inner teeth meshed with the outer teeth of the two gears are arranged on the inner wall of the bearing inner ring, the fixed shaft fixing plates are located below the two gears, and the fixed shafts sequentially penetrate through the upper sealing cover and the two gears to be connected with the fixed shaft fixing plates.

Preferably, the number of the fixed shafts is at least two.

Preferably, the bearing is a cross roller bearing.

Preferably, the bearing further comprises a roller, wherein the bearing outer ring is connected with a flange plate through bolts, and the flange plate is connected with the side wall of the roller through bolts.

Preferably, the steel wire rope is wound on the surface of the roller, a first side plate and a second side plate are arranged on two sides of the roller respectively, four opposite corners of the first side plate and the second side plate are connected through a connecting rod, bottom plates are arranged at the bottoms of the first side plate and the second side plate, and the motor is connected to the first side plate through bolts.

Preferably, one side of the roller, which is far away from the motor, is connected to the second side plate through a support rod, and a deep groove ball bearing is arranged between the support rod and the second side plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the torque motor of the novel tower crane variable-amplitude speed reducer is within 2700 revolutions, the output torque is basically constant, the torque required by the variable-amplitude speed reducer in the starting stage is the maximum, the output torque of the torque motor is just the maximum, and the motor torque accords with the motion rule and is at least 50 percent of electricity saving compared with the common motor.

2. About novel tower crane becomes width of cloth decelerator total weight 120KG, simple to operate, infinitely variable speed, driving control is nimble.

3. Novel become width of cloth decelerator's motor and decelerator high integration, convenient dismantlement and installation, the maintenance only need carry out the modularization alone and change, and circuit connection is simple and convenient, and operating stability is good, and the noise is few.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic view of the overall structure of a novel tower crane variable amplitude speed reducer provided by the utility model;

FIG. 2 is a schematic structural diagram of a reducer of the novel tower crane variable amplitude speed reducer provided by the utility model;

fig. 3 is a section structure diagram of a reducer of the novel tower crane variable amplitude reducer provided by the utility model.

Description of reference numerals:

1-motor, 2-bearing inner ring, 3-bearing outer ring, 4-upper sealing cover, 5-lower sealing cover, 6-dead axle, 7-dead axle fixing plate, 8-gear, 9-roller, 10-flange plate, 11-first side plate, 12-second side plate, 13-connecting rod, 14-bottom plate, 15-supporting rod and 16-deep groove ball bearing.

Detailed Description

The utility model will be described in detail by way of example with reference to the accompanying drawings, which form a part hereof, and in which it is to be understood that the described embodiments are by way of illustration only, and not by way of limitation.

As shown in fig. 1-2, a novel tower crane variable amplitude speed reducer comprises a motor 1, wherein a bearing is sleeved outside an output shaft of the motor 1, the bearing is a crossed roller bearing, the crossed roller bearing has strong rigidity and adjustable clearance, and can obtain high-precision rotary motion even if pre-load is applied; the bearing comprises a bearing inner ring 2 and a bearing outer ring 3, wherein the height of the bearing inner ring 2 is greater than that of the bearing outer ring 3, the top parts of the bearing inner ring 2 and the bearing outer ring 3 are parallel and level, the upper end and the lower end of the bearing are respectively connected with an upper sealing cover 4 and a lower sealing cover 5 through bolts, the upper sealing cover 4 is connected with the bearing outer ring 3, the lower sealing cover 5 is connected with the bearing inner ring 2, the output shaft of the motor 1 is an eccentric shaft, the outer side of the eccentric shaft is provided with a speed reducer, and the speed reducer is located inside the bearing inner ring 2.

The speed reducer comprises a fixed shaft 6, a fixed shaft fixing plate 7 and two gears 8, the number of the gears 8 is two, the two gears 8 are sleeved at the top of the eccentric shaft, inner teeth meshed with the outer teeth of the two gears 8 are arranged on the inner wall of the bearing inner ring 2, the fixed shaft fixing plate 7 is positioned below the two gears 8, and the fixed shaft 6 sequentially penetrates through the upper sealing cover 4 and the two gears 8 to be connected with the fixed shaft fixing plate 7.

Among this technical scheme, dead axle 6 and dead axle fixed plate 7 are used for fixing two gears 8 and upper seal cover 4, and the gear 8 of being convenient for drives upper seal cover 4 when rotating rotatory, and upper seal cover 4 and bearing outer ring 3 bolted connection to make bearing outer ring 3 rotate, and then drive cylinder 9 and rotate.

In the technical scheme, the power of the motor is 1.5 kilowatts, the torque is 6NM, the reduction ratio is 60, the output torque is 360NM, the motor 2700 revolutions per minute, and the rotating speed of the roller is 2700/60=45 circles per minute.

In order to achieve better driving effect, the number of the fixed shafts 6 is at least two, preferably, the number of the fixed shafts 6 is eight, the eight fixed shafts 6 are uniformly distributed and enclosed into a circle, and the circle center of the circle is coaxial with the circle center of the bearing inner ring 2.

Still include cylinder 9, bearing outer ring 3 has flange plate 10 through bolted connection, flange plate 10 is connected with cylinder 9 lateral wall through the bolt, is connected motor 1 and cylinder 9 through setting up flange plate 10, and the drive cylinder 9 of being convenient for rotates.

The steel wire rope is wound on the surface of the roller 9, in order to support the roller 9, a first side plate 11 and a second side plate 12 are arranged on two sides of the roller 9 respectively, four opposite corners of the first side plate 11 and the second side plate 12 are connected through a connecting rod 13, bottom plates 14 are arranged at the bottoms of the first side plate 11 and the second side plate 12, and the motor 1 is connected to the first side plate 11 through bolts.

One side of the roller 9, which is far away from the motor 1, is connected to the second side plate 12 through a support rod 15, a deep groove ball bearing 16 is arranged between the support rod 15 and the second side plate 12, and the support rod 15 and the second side plate 12 are prevented from rubbing by the deep groove ball bearing 16 when the roller 9 rotates.

The working principle is as follows: after the motor 1 is powered on, the outer teeth of the two gears 8 driven by the output shaft of the motor are meshed with the inner teeth on the inner wall of the bearing, so that the plurality of fixed shafts 6 drive the upper sealing cover 4 to rotate, the upper sealing cover 4 is connected with the bearing outer ring 3 through bolts, the bearing outer ring 3 is driven to rotate, the bearing outer ring 3 is fixedly connected with the flange plate 10, the flange plate 10 is fixedly connected with the side wall of the roller 9, and the roller 9 is driven to rotate, so that goods are hoisted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the application concepts of the present invention are equivalent to or changed within the technical scope of the present invention.

Claims

1. The utility model provides a novel tower crane becomes width of cloth decelerator, includes motor (1), its characterized in that: the bearing is sleeved on the outer side of an output shaft of the motor (1), the bearing comprises a bearing inner ring (2) and a bearing outer ring (3), the height of the bearing inner ring (2) is larger than that of the bearing outer ring (3), the top parts of the bearing inner ring (2) and the bearing outer ring (3) are parallel and level, the upper end and the lower end of the bearing are respectively connected with an upper sealing cover (4) and a lower sealing cover (5) through bolts, the upper sealing cover (4) is connected with the bearing outer ring (3), the lower sealing cover (5) is connected with the bearing inner ring (2), the output shaft of the motor (1) is an eccentric shaft, a speed reducer is arranged on the outer side of the eccentric shaft, and the speed reducer is located inside the bearing inner ring (2).

2. The novel tower crane amplitude-variation speed reducer as claimed in claim 1, characterized in that: the speed reducer comprises a fixed shaft (6), a fixed shaft fixing plate (7) and gears (8), the number of the gears (8) is two, the eccentric shaft top is sleeved with the two gears (8), inner teeth meshed with the outer teeth of the two gears (8) are arranged on the inner wall of the bearing inner ring (2), the fixed shaft fixing plate (7) is located below the two gears (8), and the fixed shaft (6) sequentially penetrates through the upper sealing cover (4) and the two gears (8) and is connected with the fixed shaft fixing plate (7).

3. The novel tower crane amplitude-variation speed reducer as claimed in claim 2, characterized in that: the number of the fixed shafts (6) is at least two.

4. The novel tower crane amplitude-variation speed reducer as claimed in claim 1, characterized in that: the bearing is a crossed roller bearing.

5. The novel tower crane amplitude-variation speed reducer as claimed in claim 1, characterized in that: the bearing outer ring (3) is connected with a flange plate (10) through bolts, and the flange plate (10) is connected with the side wall of the roller (9) through bolts.

6. The novel tower crane amplitude-variation speed reducer as claimed in claim 5, characterized in that: the steel wire rope is wound on the surface of the roller (9), a first side plate (11) and a second side plate (12) are arranged on two sides of the roller (9) respectively, four opposite corners of the first side plate (11) and the second side plate (12) are connected through a connecting rod (13), a bottom plate (14) is arranged at the bottom of each of the first side plate (11) and the second side plate (12), and the motor (1) is connected to the first side plate (11) through bolts.

7. The novel tower crane amplitude-variation speed reducer as claimed in claim 5, characterized in that: one side of the roller (9) far away from the motor (1) is connected to the second side plate (12) through a support rod (15), and a deep groove ball bearing (16) is arranged between the support rod (15) and the second side plate (12).