CN1018070B - Hydraulic brake moment gradually adding device - Google Patents
Hydraulic brake moment gradually adding deviceInfo
- Publication number
- CN1018070B CN1018070B CN 88108597 CN88108597A CN1018070B CN 1018070 B CN1018070 B CN 1018070B CN 88108597 CN88108597 CN 88108597 CN 88108597 A CN88108597 A CN 88108597A CN 1018070 B CN1018070 B CN 1018070B
- Authority
- CN
- China
- Prior art keywords
- valve rod
- mechanical axis
- spring
- oil cylinder
- service
- Prior art date
- 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
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- Braking Arrangements (AREA)
Abstract
The present invention relates to a hydraulic brake device for gradually exerting force, which is attached to a crane brake and is installed on a travelling mechanism. The present invention has the main technical performance that the crane brake is controlled by a primary brake spring, a main spring and a quantitative oil discharging system so as to guarantee stable and reliable crane brake.
Description
The present invention is a kind of brake servo that is installed on the crane travelling gear.
The large-scale mobile hoisting crane of producing both at home and abroad because frontal resistance is big, is having the strong wind weather back warp that the sport car phenomenon often takes place at present.The walking and braking device of hoisting crane itself simultaneously owing to do not overcome the device of brake inertia, very easily produces the fuselage shaking phenomenon in braking moment, thereby threatens to the safety of hoisting crane.In order to solve this deficiency of drg, many producers have proposed the improvement way, and particularly the patent No. that proposes of the Soviet Union is that the brake control device that automatic switch is housed on the stroke of 1675643/27-11 has solved above-mentioned deficiency preferably.But this equipment mechanism design is complicated, the technological requirement height, and, handle inconvenience because auxiliary mechanism is many, accurate positioning is poor.
The objective of the invention is to provide a kind of hydraulic brake moment gradually adding device simple in structure, it can overcome the deficiency of prior art effectively.
Technical characterictic of the present invention is to realize like this, it is made up of oil cylinder 4, main spring 5, valve rod 1, first service spring 8, fuel return hole 6, valve port 9, piston 7 etc., be installed on the culdy 10 of crane brake by mechanical axis 3, oil cylinder 4 is hinged on the brake control lever 11.Be connected on the oil cylinder 4 by valve rod 1 by mechanical axis 3, the upper end of valve rod 1 is with first service spring 8, is drilled with a valve port 9 on the piston 7 in oil cylinder 4, when the crane brake glancing impact, first service spring 8 presses down and is subjected to mechanical axis 3, can eliminate the gap of brake scotch and brake wheel rapidly, produces first service.Simultaneously, the main spring 5 glancing impact spring tensions in the oil cylinder 4 are by the valve rod 1 first service spring 8 that gradually reduces, thereby produce the gradually afterburning effect to the hoisting crane brake wheel, finally reach maximum lock torque (braking eventually).The first service of hydraulic brake moment gradually adding device is to realize by the first service spring 8 and the mutual action of main spring 5 with gradually reinforcing of eventually braking, and the tension force size of control main spring 5 is by the realization of back and forth flowing in the valve port 9 on the fuel return hole 6 of the hydraulic oil in the oil cylinder 4 on valve rod 1 and the piston 7.
Use the present invention at first because lock torque is bigger, solved one of the long-standing windproof problem of hoisting crane.Secondly, because the hydraulic oil in the oil cylinder 4 by the quantitative oil extraction of valve port 9 and fuel return hole 6, has been controlled the return speed of main spring 5, it is stressed that brake wheel is gradually added, and realized the requirement of hoisting crane brake gradual braking failure-free.
Describe concrete structure and the service condition that proposes according to the present invention in detail below in conjunction with Figure of description 1, accompanying drawing 2.
Fig. 1: the scheme of installation of hydraulic brake moment gradually adding device
Fig. 2: the constructional drawing of hydraulic brake moment gradually adding device
Embodiment:
The present invention includes oil cylinder 4, main spring 5, valve rod 1, piston 7, first service spring 8, fuel return hole 6, valve port 9.Piston 7 is housed in the oil cylinder 4, and valve rod 1 and piston 7 usefulness nuts are connected in the lower end of valve rod 1.Main spring 5 is to be enclosed within on the valve rod 1, and its upper end peaks on the loam cake 13 of oil cylinder 4, and the lower end withstands on the spring perch 15.The loam cake of oil cylinder 4 is to be threaded with oil cylinder.Oil cylinder 4 is stretched out in the upper end of valve rod 1, and is equipped with and is subjected to mechanical axis 3.Being subjected to mechanical axis 3 is oblong parts, respectively there is a garden cylindricality minor axis 16 on both sides, first service spring 8 is housed in the interstitial hole, there is screw thread on the top of passing valve rod 1, valve rod 1 in the middle of the first service spring 8, be subjected to the bottom of mechanical axis 3 that threaded heavy cap 14 is arranged, heavy cap 14 is spun on and is subjected in the mechanical axis 3 is to play the effect of withstanding first service spring 8.Valve rod 1 passes in the axle center hole that is subjected to mechanical axis 3, and the top is fixing by nut 2, makes to be subjected to mechanical axis 3 and oil cylinder 4 to be connected into an integral body.In the osed top oil cylinder 4 hydraulic oil is housed, height such as Fig. 2 (in-oil cylinder dotted line position) of oil.Be mounted on the position of intersecting point of middle line tracking of the middle line tracking of base l of culdy 10 and 1/2 high s by mechanical axis 3.Mounting means is to be subjected to that two minor axises 16 are placed in two circular holes of culdy 10 on the mechanical axis.4 of oil cylinders are articulated on the brake control lever 11.
When drg is opened (declutching), the push rod of pusher 12 rises and with culdy 10 jack-up, at this moment culdy 10 drives and risen by mechanical axis 3, valve rod 1 pull-up this moment, main spring 5 compressions under the effect of valve rod 1, piston 7 rises, and the valve port 9 of unlatching is sent hydraulic oil into the oil cylinder bottom.
When drg glancing impact (brake), the push rod of pusher 12 descends and also to drive culdy 10 and descend, this moment moved down by mechanical axis 3 to make first service spring 8 loose, simultaneously, main springs 5 promote valve rods 1 and move down and reach first service in the oil cylinder 4.When valve rod 1 continues to move down when reaching certain position, nut 2 begins compressing and is subjected to mechanical axis 3, until reaching gradually power-assisted maxim.
The moving velocity of valve rod 1 is by the unit recirculating oil quantity decision of fuel return hole 6.
Install that main spring 5 will have certain precompressed compression when of the present invention, the last plane when the hydraulic pressure pastas in the oil cylinder 4 can not be lower than piston 7 and peak, the optimum ratio of the tension force of while first service spring and main spring should be 1: 2.
Claims (2)
1, a kind of hydraulic brake moment gradually adding device that is used on the crane travelling gear, it is by valve rod 1, oil cylinder 4, piston 7, be subjected to mechanical axis 3, main spring 5, first service spring 8, nut 2 is formed, the mechanical axis 3 that is subjected to that moment gradually adds device is installed on the position of intersecting point of middle line tracking of the middle line tracking on base 1 of drg culdy 10 and 1/2 high s, be placed in two circular holes of culdy 10 by two minor axises 16 of mechanical axis, 4 of oil cylinders are articulated on the brake control lever 11, it is characterized in that, the upper end of valve rod 1 is with first service spring 8 and be connected on the piston 7 in the oil cylinder 4 by mechanical axis 3, the lower end of valve rod 1; Have a valve port 9 on piston 7, also have a fuel return hole 6 in the lower end of valve rod 1, main spring 5 is sleeved on the valve rod 1; When the crane brake glancing impact, the push rod of pusher 12 descends and drive culdy 10 descends, and the mechanical axis 3 that is subjected to of this moment moves down, and the first service spring 8 that makes moment gradually add device relaxes, and simultaneously, main spring 5 promotion valve rods 1 move down and reach the first service position in the oil cylinder 4; When valve rod 1 continues to move down when reaching certain position, nut 2 begins compressing and is subjected to mechanical axis 3 to reach whole braking position, the last plane when the hydraulic pressure pastas in the oil cylinder 4 can not be lower than piston 7 and peak.
2, hydraulic brake moment gradually adding device according to claim 1 is characterized in that the first service spring 8 and the tension force ratio of main spring 5 are 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108597 CN1018070B (en) | 1988-12-12 | 1988-12-12 | Hydraulic brake moment gradually adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88108597 CN1018070B (en) | 1988-12-12 | 1988-12-12 | Hydraulic brake moment gradually adding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041574A CN1041574A (en) | 1990-04-25 |
| CN1018070B true CN1018070B (en) | 1992-09-02 |
Family
ID=4835123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108597 Expired CN1018070B (en) | 1988-12-12 | 1988-12-12 | Hydraulic brake moment gradually adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018070B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343863A (en) * | 2013-07-29 | 2015-02-11 | 顾元媛 | Elastic connecting piece |
| CN106379819B (en) * | 2015-05-20 | 2019-08-13 | 鲁霄钢 | A kind of motor speed regulation system |
| CN106744433A (en) * | 2017-03-14 | 2017-05-31 | 苏州蓝王机床工具科技有限公司 | Mine hoisting anti-falling buffer device |
-
1988
- 1988-12-12 CN CN 88108597 patent/CN1018070B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041574A (en) | 1990-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: LIU JUNJIE; LI TIEJUN TO: MUDANJIANG RAILWAY SUB-HANDLING MANAGEMENT |
|
| CP03 | Change of name, title or address |
Address after: 157000 No. 101 Rizhao street, Heilongjiang, Mudanjiang Patentee after: Loading and unloading management office of Mudanjiang Railway Sub Bureau Patentee before: Liu Junjie Patentee before: Li Tiejun |
|
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |