Variable-speed gear for construction hoister
A technology of speed change device and hoist, which is applied in the direction of hoist device and spring mechanism, etc., can solve the problems of complicated electronic control, complicated technology, limited speed regulation range, etc.
Inactive Publication Date: 2010-04-21
潍坊新奇机电工程有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, these four schemes all have certain defects: firstly, the range of speed regulation of the multi-speed motor is limited to a certain extent, the impact current is large during speed change, and the failure rate of the motor is high; Slip ring electromagnetic clutch speed change greatly improves safety, but because the power distribution and operation at the construction site often fail to meet the requirements, the electromagnetic clutch will also fail; As a result, the mechanism parameters cannot meet the technical requirements, and the electronic control is complicated and the cost is high; fourthly, the use of frequency conversion technology for speed regulation is an advanced method, but due to the high cost and complicated technology, the power distribution on the construction site cannot reach Requirements and other reasons are used less in China
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] With reference to accompanying drawing, this building winch uses speed change device, and it acts between reducer input shaft 8 and II shaft 9, figure 2 It is shown that the gear is in the neutral state, including the input shaft 8 and the II shaft 9 installed in the reduction box body. The input shaft 8 is equipped with 3 main transmission gears arranged at intervals, and the II shaft 9 is equipped with the main transmission gear that meshes with the main transmission gear correspondingly. Three free gears (10, 11, 12), free gears are supported on the II shaft 9 by rolling bearings. Between the 3 free gears on the II shaft 9, 2 groups of sliding devices capable of meshing with the end faces of the free gears are installed, and the sliding devices include wheel hubs (13, 15) fixedly installed on the II shaft 9, The hubs (13, 15) are fixedly installed on the II shaft 9 through flat keys, and the hubs are equipped with coupling sleeves (14, 16) which can move along the a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a speed change gear used for a construction hoisting machine, comprising an input shaft and a II shaft arranged inside a reduction box body, wherein, the input shaft is provided with at least two main drive gears which are arranged with a space, the II shaft is provided with two free gear wheels which are meshed with the main drive gears correspondingly and a sliding devicewhich is meshed with the end surface of the free gear wheel; the reduction box body above the free gear wheel is provided with a shifting fork control mechanism driven by an electromagnet. The invention adopts the mechanical-electromagnetic control way, thereby having more reliable use and higher security; furthermore, the invention realizes remote control and speed change by using the electromagnet for driving the shifting fork control mechanism and has low production cost.
Description
technical field [0001] The invention relates to a speed change device for a construction winch. Background technique [0002] In order to realize the change of the hoisting speed of the building hoist, there are four options available, one is to use a multi-speed motor, the second is to use an electromagnetic clutch to change speed, the third is to use a dual-motor scheme to change speed, and the fourth is to use a double-motor scheme to change speed. The speed is adjusted by frequency conversion technology. At present, these four schemes all have certain defects: firstly, the range of speed regulation of the multi-speed motor is limited to a certain extent, the impact current is large during speed change, and the failure rate of the motor is high; Slip ring electromagnetic clutch speed change greatly improves safety, but because the power distribution and operation at the construction site often fail to meet the requirements, the electromagnetic clutch will also fail; As ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/22B66D1/14B66D1/60
Inventor 沈绍隆乔会琦
Owner 潍坊新奇机电工程有限公司