CN102849646A - Passive safety brake system and direction valve with speed limiting device of passive safety brake system - Google Patents
Passive safety brake system and direction valve with speed limiting device of passive safety brake system Download PDFInfo
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- CN102849646A CN102849646A CN2012103697009A CN201210369700A CN102849646A CN 102849646 A CN102849646 A CN 102849646A CN 2012103697009 A CN2012103697009 A CN 2012103697009A CN 201210369700 A CN201210369700 A CN 201210369700A CN 102849646 A CN102849646 A CN 102849646A
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- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a passive safety brake system and a direction valve with a speed limiting device of the passive safety brake system. The direction valve comprises a rotating shaft, a pair of rotating bodies, a pair of rotating arms, a valve body, a valve core and elastic components, one end of the rotating shaft is in a linkage with a low speed shaft, one ends of the rotating arms are in a hinged connection with the rotating shaft, the other ends of the rotating arms are connected with the rotating bodies, the valve body is provided with an inlet and an outlet, the valve body is connected with a liquid channel or a gas channel so as to switch the connection and disconnection of the liquid channel or the gas channel, the valve core comprises an exposure portion on the outside of the valve body and a valve core body which is capable of sliding in the valve body, the other end of the rotating shaft and a hinged joint of the rotating shaft and the rotating arms extend into a round hole in a sinking portion at the exposure portion tail end, the valve core body is provided with a disconnection position and a connection position, the elastic components are sleeved on the periphery of the exposure portion, when the low speed shaft is in a static state or at normal operation rotating speed, the valve core body is at the disconnection position by the aid of the elasticity of the elastic components, and when the rotating speed of the low speed shaft exceeds the normal rotating speed by a certain value, a rotating body centrifugal force drives the rotating arms to overcome the elasticity, so that the exposure portion of the valve core moves to drive the valve core body to slide to the connection position. The passive safety brake system and the direction valve with the speed limiting device of the passive safety brake system have the advantage that safety of the safety brake system is improved.
Description
Technical field
The present invention relates to the safety braking technique field of lifting mechanism, relate in particular to a kind of direction valve with speed-limit device and have this with the non-passive safety brake system of the direction valve of speed-limit device.
Background technology
In the prior art, lifting mechanism is for the needs of safety arrestment, needs to install sure brake system, after reel surpasses the rated speed of rotation certain value, makes the lifting mechanism braking and stops operating, and plays the safety arrestment effect.
The sure brake system of commonly using now, comprise hydraulic disk sure brake (acting on the flange of reel), the hydraulic efficiency pressure system that comprises Hydraulic Station, electromagnetic valve and supporting pipeline, be installed in the coder of reel (slow-speed shaft) and motor (high speed shaft) and corresponding electric control system etc. respectively, when the revolution ratio of slow-speed shaft, high speed shaft surpassed setting value (being generally the 1.2-1.4 of retarder speed ratio doubly), electric control system was passed through hydraulic efficiency pressure system so that reel is braked in the sure brake action.
Above-mentioned sure brake system structure is numerous and diverse, in whole braking procedure, must provide extra power----electric power, and participated in the control of whole system by electric control system, go wrong such as electric control system and then may produce serious consequence, if the situation of unexpected power failure is perhaps arranged, sure brake also may move and the locking reel, produces serious consequence.
Non-passive safety brake system (or claiming non-active automatic safe brake system) has solved above problem well, can be under the condition without extra power, after reel (slow-speed shaft of lifting mechanism) surpasses amount rotating speed certain value, automatically start the sure brake that is installed on the reel, make lifting mechanism braking and stop operating, play the safety arrestment effect.
The non-passive safety brake system, drive sure brake so that reel (slow-speed shaft) is braked by hydraulic efficiency pressure system and pneumatic system, therefore, whether one can be fed back reel and exceed the speed limit, and after the reel hypervelocity above-mentioned hydraulic efficiency pressure system or pneumatic system to be switched to the device that is communicated with the position be a kind of critical component.Therefore, need so a kind of critical component, and wish that such critical component cost is low, manufacturing process is simple.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of reel that can feed back whether to exceed the speed limit, and after the reel hypervelocity, hydraulic efficiency pressure system or pneumatic system are switched to the direction valve with speed-limit device that is communicated with the position.
Another object of the present invention is to provide a kind of non-passive safety brake system with direction valve of band speed-limit device of the present invention
The present invention is achieved through the following technical solutions:
A kind of direction valve with speed-limit device, for the non-passive safety brake system of lifting mechanism, this direction valve with speed-limit device comprises; Rotating shaft, an end is connected in the slow-speed shaft of described lifting mechanism, with described slow-speed shaft interlock; A pair of swivel; A pair of pivoted arm, an end is articulated in described rotating shaft, and the other end connects described swivel, so that described swivel is at the drive backspin of the described rotating shaft living centnifugal force of changing the line of production; One valve body has an import and an outlet, on the liquid road of described import and the hydraulic efficiency pressure system that exports the driving sure brake that is connected to described non-passive safety brake system or the gas circuit of pneumatic system, with connection and the cut-off of switching described liquid road or gas circuit; One spool, described spool comprise the exposed parts that is exposed at the described valve body outside and the valve core that slides in valve body, the other end of described rotating shaft stretches into together with the hinge-point of described rotating shaft and described pivoted arm in the depression of described exposed parts end in the circular hole; Described valve core has described import and the mutual disconnected connection position that position and described import and described outlet are communicated with by the passage that arranges on the described valve core of ending of described outlet of valve body; One elastic element, be sheathed on the periphery of described exposed parts, when described slow-speed shaft is in static or work rotating speed, the elastic force of described elastic element makes described valve core be in described cut-off position, when described slow-speed shaft rotating speed surpassed the normal speed certain value, described centnifugal force overcomes described elastic force made described valve core slide into described connection position.
Non-passive safety brake system of the present invention has the direction valve with speed-limit device of the present invention.
Beneficial effect of the present invention is, direction valve with speed-limit device of the present invention, simple in structure, cost of manufacture is low, and can be when reel exceeds the speed limit, the action that replaces switches to and is communicated with the position driving the hydraulic efficiency pressure system of sure brake of sure brake system or pneumatic system, to drive the sure brake brake drum.Direction valve of the present invention need to not provide extra power in whole braking procedure, need to do not controlled by electric system yet, can because of the locking reel that has a power failure suddenly, not increase validity and the safety of non-passive safety brake system of the present invention yet.
Description of drawings
Fig. 1 is that the direction valve with speed-limit device of the embodiment of the invention is in the scheme drawing that ends the position at zero rotating speed;
Fig. 2 is that the direction valve with speed-limit device of the embodiment of the invention is in the scheme drawing that ends the position at the normal operation rotating speed;
Fig. 3 is that the direction valve with speed-limit device of the embodiment of the invention is in the scheme drawing that is communicated with the position when exceeding the speed limit;
The specific embodiment
The exemplary embodiments that embodies feature ﹠ benefits of the present invention will be described in detail in the following description.Be understood that the present invention can have at different embodiment various variations, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be when the usefulness that explain in itself, but not in order to limit the present invention.
The direction valve with speed-limit device of the embodiment of the invention can be used in the non-passive safety brake system of the embodiment of the invention, but not active sure brake system is applicable to the lifting mechanism that all need sure brake, can be under the condition without extra power, after reel (slow-speed shaft) surpasses the rated speed of rotation certain value, switch to the connection position by hydraulic efficiency pressure system or the pneumatic system that will drive sure brake by the cut-off position, automatically start the sure brake that is installed on the reel, make the reel braking of lifting mechanism and stop operating, play the safety arrestment effect.
Below specifically introduce the direction valve with speed-limit device (hereinafter to be referred as direction valve) of the embodiment of the invention, present embodiment illustrates as an example of pneumatic system example, but the hydraulic efficiency pressure system that equally also can be used for driving sure brake with the direction valve of speed-limit device of the present invention.
Fig. 1 is that the direction valve of the embodiment of the invention is at the scheme drawing of reel zero rotating speed, be in cut-off position, Fig. 2 be the direction valve of the embodiment of the invention at the scheme drawing of reel normal operation rotating speed, be in the cut-off position, Fig. 3 is the scheme drawing of direction valve when reel exceeds the speed limit of the embodiment of the invention, is in to be communicated with the position.What the arrow among the figure represented is the state variation that is communicated with or ends.
As shown in Figure 1-Figure 3, the direction valve of the embodiment of the invention comprises rotating shaft 1, a pair of small ball 2 as swivel, a pair of pivoted arm 3, spool 4, as Compress Spring 5 and the valve body 6 of elastic element, and next coming in order are introduced each element.
Rotating shaft 1 is connected with reel afterbody axle, also namely is connected with the slow-speed shaft of lifting mechanism.Rotating shaft 1 and the interlock of reel afterbody axle, therefore when reel exceeds the speed limit, the speed of rotating shaft 1 also will be accelerated.As shown in Figure 1, the left end of rotating shaft 1 is used for being connected with reel afterbody axle, and the right-hand member of rotating shaft 1 stretches in the depression of exposed parts 41 ends of spool 4 in the circular hole 410, and the rotation of rotating shaft 1 is not with movable valve plug 4 to rotate.
A pair of small ball 2 is connected on the pivoted arm 3, and certainly, swivel of the present invention can not be steel ball also, can be other metal ball body also, or the non-metal spheroid of constant weight is arranged.When reel exceeds the speed limit, under the drive of rotating shaft 1, small ball 2 High Rotation Speeds produce centnifugal force, drive pivoted arm 3 and swing to the position perpendicular to rotating shaft 1 from little angle (with the angle of rotating shaft 1) position, the elastic force that the centnifugal force drive pivoted arm 3 that small ball 2 high speed rotating produce overcomes Compress Spring 5 moves the exposed parts 41 of spool 4, and then promote spool 4 in valve body 6 interior slips, and realize the direction replacing, pneumatic system is converted to gas circuit from gas circuit cut-off position is communicated with the position.
A pair of pivoted arm 3, an end of each pivoted arm 3 is articulated in rotating shaft 1, other end captive joint one small ball 2; Two pivoted arms 3 be articulated in rotating shaft 1 vertically on same position.Can open a horizontal axis hole in rotating shaft 1, in axis hole, wear a length greater than the bearing pin of rotating shaft 1 diameter, respectively two pivoted arms 3 are articulated in the two ends of the bearing pin that stretches out in above-mentioned axis hole.When rotating shaft 1 is rotated, also drive pivoted arm 3 and rotate together.In the present embodiment, as shown in Figure 1, rotating shaft 1 has been extended again a segment distance to the right in the articulated position of pivoted arm 3.Certainly, rotating shaft 1 also can only extend to the articulated position of pivoted arm 3, and the hinge-point of rotating shaft 1 and pivoted arm 3 also stretches in the depression of exposed parts 41 ends of spool 4 in the circular hole 410.
Spool 4 comprises the exposed parts 41 that is exposed at valve body 6 outsides and at the valve core 42 of valve body 6 interior slips, the diameter of exposed parts 41 is greater than the diameter of valve core 42, the end of exposed parts 41 (being a non-end that links to each other with valve core 42) has circular hole 410 in a flange 411 and the depression, circular hole 410 for example is cylindric or semielliptical shape in the depression, and the end that the non-and reel slow-speed shaft of rotating shaft 1 is connected puts in the interior circular hole 410 of depression together with the hinge-point of rotating shaft 1 with pivoted arm 3.Valve core 42 has the passage (for example through hole) that is communicated with for valve body 6 gas circuits in the central slide of valve body 6 on the valve core 42.
Compress Spring 5 is sleeved on the periphery of the exposed parts 41 of spool 4, and an end of Compress Spring 5 is resisted against flange 411 inboards, and an other end is resisted against the outside face of valve body 6, and Compress Spring 5 also can be replaced by other elastic element.When reel is in static (or claiming zero-speed) or normal operation rotating speed, the tension force of Compress Spring makes valve core 42 be in the cut-off position, when drum speed surpassed the normal speed certain value, the tension force that the centnifugal force of small ball 2 rotations overcomes Compress Spring 5 made valve core 42 slide into the cut-off position.
As shown in Figure 2, when rotating shaft 1 is connected on the reel afterbody axle, when rotating with the reel normal operation, small ball 2 is under the effect of centnifugal force, and drive pivoted arm 3 swings to rotating shaft 1 has certain angle, and promotion spool 4 slides a distance to the right, and under the effect of Compress Spring 5, guarantee under the normal speed that spool 4 is in gas circuit cut-off position, prevents misoperation.
As shown in Figure 3, when drum speed surpasses the normal speed certain value, small ball 2 is under the effect of centnifugal force, drive pivoted arm 3 and swing to the position vertical with rotating shaft 1, overcome the tension force of Compress Spring 5 and promote spool 4 and continue to slide a distance to the right, be communicated with the position so that spool 4 is in gas circuit, at this moment the import 61 of valve body 6 and outlet 62 is communicated with by the passage that arranges on the valve core 42, realize being communicated with the function of gas circuit, gas circuit can drive sure brake so that reel is braked after being communicated with.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of doing in the situation that does not break away from the scope and spirit of the present invention that the appended claim of the present invention discloses, all belong within the protection domain of claim of the present invention.
Claims (9)
1. direction valve with speed-limit device is used for the non-passive safety brake system of lifting mechanism, it is characterized in that this direction valve with speed-limit device comprises;
Rotating shaft, an end is connected in the slow-speed shaft of described lifting mechanism, with described slow-speed shaft interlock;
A pair of swivel;
A pair of pivoted arm, an end is articulated in described rotating shaft, and the other end connects described swivel, so that described swivel is at the drive backspin of the described rotating shaft living centnifugal force of changing the line of production;
One valve body has an import and an outlet, on the liquid road of described import and the hydraulic efficiency pressure system that exports the driving sure brake that is connected to described non-passive safety brake system or the gas circuit of pneumatic system, with connection and the cut-off of switching described liquid road or gas circuit;
One spool, described spool comprise the exposed parts that is exposed at the described valve body outside and the valve core that slides in valve body, the other end of described rotating shaft stretches into together with the hinge-point of described rotating shaft and described pivoted arm in the depression of described exposed parts end in the circular hole; Described valve core has described import and the mutual disconnected connection position that position and described import and described outlet are communicated with by the passage that arranges on the described valve core of ending of described outlet of valve body;
One elastic element, be sheathed on the periphery of described exposed parts, when described slow-speed shaft is in static or work rotating speed, the elastic force of described elastic element makes described valve core be in described cut-off position, when described slow-speed shaft rotating speed surpassed the normal speed certain value, described centnifugal force overcomes described elastic force made described valve core slide into described connection position.
2. the direction valve with speed-limit device as claimed in claim 1 is characterized in that, circular hole is cylindric in the described depression of described exposed parts, the centerline collineation of circular hole in the line of centers of described rotating shaft and the described depression.
3. the direction valve with speed-limit device as claimed in claim 2 is characterized in that, described elastic element is Compress Spring.
4. the direction valve with speed-limit device as claimed in claim 3 is characterized in that, the end of described exposed parts also has a flange, and described Compress Spring is arranged between described flange inner and the described valve outer surface.
5. the direction valve with speed-limit device as claimed in claim 1 is characterized in that, described swivel is small ball.
6. the direction valve with speed-limit device as claimed in claim 1 is characterized in that, described passage is through hole.
7. the direction valve with speed-limit device as claimed in claim 1 is characterized in that, the diameter of described exposed parts is greater than the diameter of described valve core.
8. a non-passive safety brake system is characterized in that, described non-passive safety brake system has the arbitrary described direction valve with speed-limit device of claim 1-7.
9. non-passive safety brake system as claimed in claim 8 is characterized in that, described slow-speed shaft is the afterbody axle of the reel of described lifting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369700.9A CN102849646B (en) | 2012-09-27 | 2012-09-27 | The direction valve of non-passive safety brake system and band speed-limit device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369700.9A CN102849646B (en) | 2012-09-27 | 2012-09-27 | The direction valve of non-passive safety brake system and band speed-limit device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102849646A true CN102849646A (en) | 2013-01-02 |
| CN102849646B CN102849646B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210369700.9A Expired - Fee Related CN102849646B (en) | 2012-09-27 | 2012-09-27 | The direction valve of non-passive safety brake system and band speed-limit device thereof |
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| Country | Link |
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| CN (1) | CN102849646B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061910U (en) * | 1990-01-06 | 1990-09-12 | 杜维孝 | Inertia transducing solenoid valve blocking-proof bracking device |
| JPH07280078A (en) * | 1994-03-31 | 1995-10-27 | Samsung Heavy Ind Co Ltd | Automatic speed change gear utilizing centrifugal force |
| JPH08200519A (en) * | 1995-01-30 | 1996-08-06 | Nippon Avionics Co Ltd | Opening/closing valve |
| CN201028028Y (en) * | 2007-01-24 | 2008-02-27 | 宝山钢铁股份有限公司 | Centrifugal type automatic regulating valve |
| CN102052488A (en) * | 2009-10-28 | 2011-05-11 | 韩宏波 | Centrifugal one-way cutoff valve |
| CN202065538U (en) * | 2011-05-25 | 2011-12-07 | 徐州润金电气设备有限公司 | Centrifugal controller |
-
2012
- 2012-09-27 CN CN201210369700.9A patent/CN102849646B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061910U (en) * | 1990-01-06 | 1990-09-12 | 杜维孝 | Inertia transducing solenoid valve blocking-proof bracking device |
| JPH07280078A (en) * | 1994-03-31 | 1995-10-27 | Samsung Heavy Ind Co Ltd | Automatic speed change gear utilizing centrifugal force |
| JPH08200519A (en) * | 1995-01-30 | 1996-08-06 | Nippon Avionics Co Ltd | Opening/closing valve |
| CN201028028Y (en) * | 2007-01-24 | 2008-02-27 | 宝山钢铁股份有限公司 | Centrifugal type automatic regulating valve |
| CN102052488A (en) * | 2009-10-28 | 2011-05-11 | 韩宏波 | Centrifugal one-way cutoff valve |
| CN202065538U (en) * | 2011-05-25 | 2011-12-07 | 徐州润金电气设备有限公司 | Centrifugal controller |
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| Publication number | Publication date |
|---|---|
| CN102849646B (en) | 2016-03-09 |
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Granted publication date: 20160309 |