CN202226599U - Hoisting device of crane - Google Patents
Hoisting device of crane Download PDFInfo
- Publication number
- CN202226599U CN202226599U CN2011202875387U CN201120287538U CN202226599U CN 202226599 U CN202226599 U CN 202226599U CN 2011202875387 U CN2011202875387 U CN 2011202875387U CN 201120287538 U CN201120287538 U CN 201120287538U CN 202226599 U CN202226599 U CN 202226599U
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- China
- Prior art keywords
- hydraulic
- winding drum
- brake
- hydraulic motor
- change
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
A hoisting device of a crane comprises a hydraulic source, a reversing valve, a hydraulic motor and a winding drum, wherein the hydraulic source is connected with the hydraulic motor by an oil way and the reversing valve, the hydraulic motor is in power connection with the winding drum, a brake hub is arranged at one end part of the winding drum, a brake oil cylinder is also provided, a piston rod of the brake oil cylinder is connected with a brake block of the brake hub, a spring is arranged in a piston rod cavity of the brake oil cylinder, the reversing valve is a three-position reversing valve, and a rodless cavity of the brake oil cylinder is connected with a mid-position hydraulic oil output end of the reversing valve by the oil way. With the adoption of the hoisting device, the winding drum brakes firmly and reliably, thehidden hazards are eliminated, the independent control is not needed, and the operation is convenient.
Description
Technical field
The utility model relates to a kind of crane lifting appliance, is used for crane lifting material.
Background technology
Existing crane lifting appliance is to lean on hydraulic directional control valve oil-feed, oil return, oil sealing; Reach just changeing, reverse and stopping to realize the function that winding drum just changes, reverses and stops of HM Hydraulic Motor; Thereby reach the weight of slinging, transfer weight and rest on the purpose of certain position, space, when stopping, make hydraulic directional control valve be in meta at the middle part; Thereby rely on oil sealing to realize the function that HM Hydraulic Motor stops operating winding drum is braked; But when lifted weight is overweight, depends merely on HM Hydraulic Motor and can not brake firmly, have potential safety hazard.
Summary of the invention
The purpose of the utility model provides a kind of crane lifting appliance, solves the illusive technological deficiency of braking.
The purpose of the utility model realizes as follows: this crane lifting appliance comprises hydraulic power source, change-over valve, HM Hydraulic Motor and winding drum; Hydraulic power source is connected with HM Hydraulic Motor through oil circuit and change-over valve, and HM Hydraulic Motor is connected with winding drum power, and the winding drum end also is provided with the braking hub; A brake cylinder is arranged; The piston rod of brake cylinder is connected on the brake plate of braking hub, the rod end chamber device spring of brake cylinder, and change-over valve is a three position directional valve; The position, a left side of change-over valve and rotating and reverse of right position modulated pressure motor; The meta of change-over valve cuts off the two-way oil circuit of HM Hydraulic Motor on the one hand and realizes oil sealing, and one road hydraulic oil mouth is arranged on the other hand, and the rodless cavity of brake cylinder is connected on the meta hydraulic oil mouth of change-over valve through oil circuit.When slinging and transfer weight, the rodless cavity of brake cylinder is not communicated with the hydraulic oil of system, and the piston of brake cylinder drives the piston rod retraction under the effect of spring, and the brake off sheet is to the brake action of braking hub; When the needs weight rests on certain position, space; Make change-over valve be in meta; To HM Hydraulic Motor oil sealing stall and braking, simultaneously the HM Hydraulic Motor rodless cavity is communicated with hydraulic oil, promotes pressure that piston overcomes spring and moves and drive piston rod and stretch out brake plate is braked the braking hub; The braking of realization double-layer hydraulic, thus it is solid and reliable that the lifted weight thing is paused.
The utility model makes the winding drum braking solid and reliable, eliminates safe hidden trouble, and does not need independent control, and is easy to operate.
Description of drawings
Accompanying drawing 1 is the hydraulic pressure johning knot composition of the utility model.
The specific embodiment
With reference to accompanying drawing, the utility model comprises hydraulic power source, change-over valve 3, HM Hydraulic Motor 4 and winding drum 1, and hydraulic power source has pressure hydraulic fluid port P and return opening O; Hydraulic power source pressure hydraulic fluid port P is connected change-over valve 3 with return opening O, and the mouth of change-over valve 3 connects HM Hydraulic Motor 4 through oil circuit, and HM Hydraulic Motor 4 is connected with winding drum 1 power; Winding drum 1 end also is provided with the braking hub; A brake cylinder 2 is arranged, and the piston rod of brake cylinder 2 is connected on the brake plate of braking hub, the rod end chamber device spring of brake cylinder 2; Change-over valve 3 is a three position directional valve, and the rodless cavity of brake cylinder 2 is connected on the meta hydraulic oil mouth of change-over valve 3 through oil circuit.
Claims (1)
1. crane lifting appliance; Comprise hydraulic power source, change-over valve, HM Hydraulic Motor and winding drum, hydraulic power source is connected with HM Hydraulic Motor through oil circuit and change-over valve, and HM Hydraulic Motor is connected with winding drum power; It is characterized in that: winding drum (1) end also is provided with the braking hub; A brake cylinder (2) is arranged, and the piston rod of brake cylinder (2) is connected on the brake plate of braking hub, the rod end chamber device spring of brake cylinder (2); Change-over valve (3) is a three position directional valve, and the rodless cavity of brake cylinder (2) is connected on the meta hydraulic oil mouth of change-over valve (3) through oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202875387U CN202226599U (en) | 2011-08-09 | 2011-08-09 | Hoisting device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202875387U CN202226599U (en) | 2011-08-09 | 2011-08-09 | Hoisting device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202226599U true CN202226599U (en) | 2012-05-23 |
Family
ID=46077198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202875387U Expired - Lifetime CN202226599U (en) | 2011-08-09 | 2011-08-09 | Hoisting device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202226599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030081A (en) * | 2012-12-28 | 2013-04-10 | 徐州重型机械有限公司 | Brake control device and crane |
| CN103407927A (en) * | 2013-08-09 | 2013-11-27 | 吕明俊 | Hydraulic tensioning winch brake for belt conveyor |
-
2011
- 2011-08-09 CN CN2011202875387U patent/CN202226599U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030081A (en) * | 2012-12-28 | 2013-04-10 | 徐州重型机械有限公司 | Brake control device and crane |
| CN103030081B (en) * | 2012-12-28 | 2015-04-22 | 徐州重型机械有限公司 | Brake control device and crane |
| CN103407927A (en) * | 2013-08-09 | 2013-11-27 | 吕明俊 | Hydraulic tensioning winch brake for belt conveyor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |