CN205187674U - Railway crane loopbacks tooth insurance system of taking off - Google Patents
Railway crane loopbacks tooth insurance system of taking off Download PDFInfo
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- CN205187674U CN205187674U CN201520951945.1U CN201520951945U CN205187674U CN 205187674 U CN205187674 U CN 205187674U CN 201520951945 U CN201520951945 U CN 201520951945U CN 205187674 U CN205187674 U CN 205187674U
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Abstract
The utility model discloses a railway crane loopbacks tooth insurance system of taking off, a serial communication port, include: center pin (4) on casing (1) are fixed in at casing (1) and both ends, be equipped with gear (2) on center pin (4), gear (2) can slide on center pin (4), the one end of casing (1) is equipped with mentions cylinder (5), mention that the piston rod terminus of cylinder (5) is connected with shift fork (7), shift fork (7) are connected with gear (2), mention that cylinder (5) are connected with the train line through tuber pipe (10), can accurately fix a position desired position to have multilayer logic safety mechanism, it is reliable to ensure that the tooth is taken off in the loopback, can realize automatic control's function moreover, and it is accurate and convenient to make whole control process control.
Description
Technical field
The present invention relates to locomotive technology field, particularly a kind of locomotive crane loopback takes off tooth insurance system.
Background technology
At present, railway lifting is mainly used in the rescue of Railway Running Accidents, for hoisting crane walking, there are two large functions: one be as unpowered as passenger vehicle, the lorry, rescue site or maintenance place is arrived fast by locomotive traction, and be transmitted back to locomotive depot, running velocity, than very fast, is commonly called as hoisting crane " loopback ".Two is that hoisting crane arranges and a set ofly realizes relying on oneself walking by self power and transmission device, employing driving two moving axis, and speed is slower, range ability is shorter, be commonly called as " traveling of relying on oneself ", need at rescue work scene hoisting crane to rely on oneself walking to lifting cargo point, implement goods lifting operation.
Locomotive crane relies on oneself walking by self diesel powered, when driving gear engages with driven gear, drive driving gear to rotate by HM Hydraulic Motor or mechanical drive mode, drive the moving axis of driven gear (being fixed on axletree) to rotate, realize relying on oneself traveling effect.Hoisting crane rely on oneself walking driving gear
Engage with driven gear and generally adopts mechanical castellated, hydraulic actuating cylinder or cylinder mode to realize; Hoisting crane is when loopback, and driving gear and the driven gear of walking of relying on oneself need to throw off, and general mechanical castellated, hydraulic actuating cylinder or the cylinder mode of adopting realizes disengagement.When the long distance of loopback, need to ensure that driving and driven gear is thrown off completely, be called " loopback takes off tooth safety device ".Otherwise because of hoisting crane rely on oneself walking the driven gear ratio of number of teeth driving gear number of teeth want many, belong to deceleration 2-3 times of transmission devices.During hoisting crane loopback, moving axis velocity of rotation when locomotive traction loopback is very fast, once driving and driven gears meshing, driven gear (being fixed on moving axis) High Rotation Speed drives driving gear high speed rotating, makes mechanical reduction box or HM Hydraulic Motor High Rotation Speed, must damage HM Hydraulic Motor or drop-gear box, cause gearbox parts to damage to come off, cause traffic safety accident, even cause overturning, cause casualties, cause larger economic loss to country, cause serious harmful effect to society.Therefore, hoisting crane must guarantee that when loopback driving and driven gear is thrown off completely.
At present, loopback takes off tooth safety device and adopts the castellated or plug-in retracing spring mode of shift fork of machinery to take off tooth.The castellated de-tooth of machinery is in middle drop-gear box out-of-gear engagement, two moving axis are connected and transferring power by two versatile spindles with middle drop-gear box, versatile spindle and moving axis are not thrown off, or forget that throwing off traveling mentions, the High Rotation Speed when loopback, easily cause versatile spindle, drop-gear box bearing damage, may element falling be occurred, cause traffic safety accident.
It is that driving tooth moves at castellated shaft with shift fork that the plug-in retracing spring mode of shift fork takes off tooth, under two return spring force effects, driving tooth and driven gear is thrown off.Once retracing spring is tired and pulling force is inadequate, or retracing spring damages, even position spring breakage, driving and driven gears meshing may be there is, driven gear (being fixed on moving axis) High Rotation Speed drives driving gear high speed rotating, makes HM Hydraulic Motor High Rotation Speed, must damage HM Hydraulic Motor or drop-gear box, cause gearbox parts to damage to come off, cause traffic safety accident.
No matter loopback takes off tooth safety device and adopts the castellated or plug-in retracing spring mode of shift fork of machinery to take off tooth, all has traffic safety hidden danger.The castellated de-tooth of machinery forgets that throwing off traveling mentions, causes train operation accident; Versatile spindle and the moving axis of the castellated de-tooth of machinery are not thrown off, and easily cause versatile spindle, drop-gear box bearing damage, cause traffic safety accident; The castellated de-tooth of machinery must adopt artificial shake, and production efficiency is lower, has certain labour intensity simultaneously; The plug-in retracing spring side of shift fork, once retracing spring is tired and pulling force inadequate, causes traffic safety accident; The plug-in retracing spring of shift fork may occur that retracing spring damages, and causes traffic safety accident; The plug-in retracing spring of shift fork, once fracture, causes traffic safety accident.
Summary of the invention
The object of the invention is: the problem solving prior art; propose a kind of locomotive crane loopback and take off tooth insurance system; can precise positioning to need position; and there is multilayer logic safety mechanism; can guarantee that loopback takes off tooth reliable; and the function of control automatically can be realized, whole control process is manipulated precisely with convenient.
The technical solution used in the present invention is as follows:
A kind of locomotive crane loopback takes off tooth insurance system, comprise: the center shaft on housing is fixed at housing and two ends, described center shaft is equipped with gear, described gear can slide on center shaft, one end of described housing is provided with mentions cylinder, describedly mention that the piston-rod end of cylinder is connected with shift fork, described shift fork is connected with gear, describedly mention that cylinder is connected with train line by airduct, arranging like this can make gear mention position, namely to rely on oneself walking position and de-tooth position, namely can change easily between allokinetic position, and control to mention that cylinder can realize the automatic control of gear position by control system.
A kind of locomotive crane loopback of the present invention takes off tooth insurance system, described center shaft is provided with gear and takes off tooth knock hole, described gear is provided with registration device, described registration device comprises spring and place kick, described place kick can take off tooth knock hole with gear and match, such setting not only can make gear arrive predetermined location accurately, and place kick can also have certain coupling mechanism force.
A kind of locomotive crane loopback of the present invention takes off tooth insurance system, and described center shaft is castellated shaft, and such arranging can make gear radial rotating can not occur on castellated shaft, improves the positioning precision of gear, and is convenient to the slip of gear on axle.
A kind of locomotive crane loopback of the present invention takes off tooth insurance system, also comprise bayonet lock catch gear, described bayonet lock catch gear comprises, guide rod and clamping body, described guide rod is slidably mounted on housing, described guide rod is connected with shift fork, described guide rod is provided with bayonet lock mating groove, described clamping body comprises: slide, described slide is fixed on housing, bayonet lock is provided with in described slide, described bayonet lock and bayonet lock cylinders connect, the oscilaltion under the effect of bayonet lock cylinder of described bayonet lock contacts with bayonet lock mating groove and is separated, the ability that such setting makes gear remain on de-tooth position is strengthened further, from and adopt the cooperation of mechanism structure to realize spacing, more reliable and safety.
A kind of locomotive crane loopback of the present invention takes off tooth insurance system, described mentioning is provided with retracing spring in cylinder, described retracing spring one end with mention that cylinder bottom is connected, the described retracing spring other end with mention that the axis of the piston of cylinder is connected, described retracing spring state of nature lower piston axle with mention cylinder bottom distance the shortest, such setting makes to mention that cylinder has the predetermincd tension making gear remain on de-tooth position, at needs from mentioning that position has auxiliary screen resilience and makes it to remain on the elastic force of de-tooth position when sliding into de-tooth position, thus strengthen the coupling mechanism force of cylinder.
A kind of locomotive crane loopback of the present invention takes off tooth insurance system, comprise: the center shaft on housing is fixed at housing and two ends, described center shaft is equipped with gear, described gear can slide on center shaft, one end of described housing is provided with mentions cylinder, describedly mention that the piston-rod end of cylinder is connected with shift fork, described shift fork is connected with gear, describedly mention that cylinder is connected with train line by airduct, described center shaft is provided with gear and takes off tooth knock hole, described gear is provided with registration device, described registration device comprises spring and place kick, described place kick can take off tooth knock hole with gear and match, described center shaft is castellated shaft, also comprise bayonet lock catch gear, described bayonet lock catch gear comprises, guide rod and clamping body, described guide rod is slidably mounted on housing, described guide rod is connected with shift fork, described guide rod is provided with bayonet lock mating groove, described clamping body comprises: slide, described slide is fixed on housing, bayonet lock is provided with in described slide, described bayonet lock and bayonet lock cylinders connect, the oscilaltion under the effect of bayonet lock cylinder of described bayonet lock contacts with bayonet lock mating groove and is separated, described mentioning is provided with retracing spring in cylinder, described retracing spring one end with mention that cylinder bottom is connected, the described retracing spring other end with mention that the axis of the piston of cylinder is connected, described retracing spring state of nature lower piston axle with mention cylinder bottom distance the shortest, described mentioning is provided with retracing spring in cylinder, described retracing spring one end with mention that cylinder bottom is connected, the described retracing spring other end with mention that the axis of the piston of cylinder is connected, described retracing spring state of nature lower piston axle with mention cylinder bottom distance the shortest, such setting makes gear remain on the function de-tooth position with multi-locking, its multi-locking function is: one is pushed down by pressurized air to mention cylinder piston, gear is made to be in disengaged condition, two is mention that the piston of cylinder is under action of reset spring, stops gear to mentioning that displacement is moved, three is that on castellated shaft, place kick blocks gear under the compression of spring, makes gear remain on de-tooth position, four is that bayonet lock blocks guide rod, prevention gear with from de-tooth position to mention displacement move.
Owing to have employed above-mentioned technical scheme; the invention has the beneficial effects as follows: propose a kind of locomotive crane loopback and take off tooth insurance system; can precise positioning to need position; and there is multilayer logic safety mechanism; can guarantee that loopback takes off tooth reliable; and the function of control automatically can be realized, whole control process is manipulated precisely with convenient.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is the schematic diagram that a kind of locomotive crane loopback of the present invention takes off tooth insurance system;
Fig. 2 is the bayonet lock catch gear partial schematic diagram that a kind of locomotive crane loopback of the present invention takes off tooth insurance system;
Fig. 3 is the air operated control schematic diagram that a kind of locomotive crane loopback of the present invention takes off tooth insurance system;
Fig. 4 mentions cylinder partial schematic diagram in Fig. 3;
Mark in figure
1-housing, 2-gear, 3-registration device, 4-center shaft, 5-mention cylinder, 6-retracing spring, 7-shift fork, 8-guide rod, 9-clamping body, 91-slide, 92-bayonet lock, 93-bayonet lock cylinder, 10-airduct, 101-mention position, 102-takes off tooth position, 201-mentions reservoir, 202-bayonet lock reservoir.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-4 for a kind of locomotive crane loopback of the present invention takes off tooth insurance system, comprise: the center shaft 4 on housing 1 is fixed at housing 1 and two ends, described center shaft 4 is equipped with gear 2, described gear 2 can slide on center shaft 4, one end of described housing 1 is provided with mentions cylinder 5, describedly mention that the piston-rod end of cylinder 5 is connected with shift fork 7, described shift fork 7 is connected with gear 2, describedly mention that cylinder 5 is connected with train line by airduct 10, arranging like this can make gear mention position 101, namely to rely on oneself walking position and de-tooth position 102, namely can change easily between allokinetic position, and control to mention that cylinder can realize the automatic control of gear position by control system, described center shaft 4 is provided with gear and takes off tooth knock hole, described gear 2 is provided with registration device 3, described registration device 3 comprises spring and place kick, described place kick can take off tooth knock hole with gear and match, such setting not only can make gear arrive predetermined location accurately, and place kick can also have certain coupling mechanism force, described center shaft 4 is castellated shaft, can not radial rotating be there is in what arranging like this can make gear on castellated shaft, improve the positioning precision of gear, and be convenient to the slip of gear on axle, described a kind of locomotive crane loopback takes off tooth insurance system, also comprise bayonet lock catch gear, described bayonet lock catch gear comprises, guide rod 8 and clamping body 9, described guide rod 8 is slidably mounted on housing 1, described guide rod 8 is connected with shift fork 7, described guide rod 8 is provided with bayonet lock mating groove, described clamping body 9 comprises: slide 91, described slide 91 is fixed on housing 1, bayonet lock 92 is provided with in described slide 91, described bayonet lock 92 is connected with bayonet lock cylinder 93, the oscilaltion under the effect of bayonet lock cylinder 93 of described bayonet lock 92 contacts with bayonet lock mating groove and is separated, the ability that such setting makes gear remain on de-tooth position 102 is strengthened further, from and adopt the cooperation of mechanism structure to realize spacing, more reliable and safety, described mentioning is provided with retracing spring 6 in cylinder 5, described retracing spring 6 one end is connected bottom cylinder 5 with mentioning, described retracing spring 6 other end with mention that the axis of the piston of cylinder 5 is connected, described retracing spring 6 state of nature lower piston axle with mention that cylinder 5 distance from bottom is the shortest, such setting makes to mention that cylinder has the predetermincd tension making gear remain on de-tooth position 102, at needs from mentioning that position 101 has auxiliary screen resilience and makes it to remain on the elastic force of de-tooth position 102 when sliding into de-tooth position 102, thus strengthen the coupling mechanism force of cylinder.
Work and control principle:
Mention principle
When before traveling of relying on oneself, start diesel engine air pump and beat wind, when pressurized air is greater than 7kg/cm2, the bayonet lock that first closes throws off button, two-position five-way electromagnetic pneumatic valve events is in and unclamps bayonet lock position, pressurized air through centre revolving joint to electromagnetism-gas-driving valve, arrive bayonet lock cylinder rodless cavity again, bayonet lock cylinder return spring force is overcome under pressurized air effect, promote bayonet lock to move up in slide, make bayonet lock leave the bayonet lock mating groove of guide rod completely, make bayonet lock push down the travel switch of throwing off bayonet lock, it is bright that bayonet lock throws off indicator lamp simultaneously.Then close and mention button, two-position five-way electromagnetic pneumatic valve events is in mentions position 101, pressurized air through centre revolving joint to electromagnetism-gas-driving valve, again to mentioning cylinder rodless cavity, under pressurized air effect, overcome place kick block gear forces and mention cylinder return spring force, promote shift fork driven gear toward reach, drive guide rod toward reach simultaneously, make to mention that guide rod thrown off by travel switch, mention that indicator lamp is bright, driving gear engages with driven gear, rotarily drives moving axis and rotates, realize relying on oneself traveling effect at hydraulic drive motor.
De-extension principle
After traveling of relying on oneself, first disconnect and mention button, two-position five-way electromagnetism-gas-driving valve dead electricity, under electromagnetic valve action of reset spring, electromagnetism-gas-driving valve is in de-tooth position 102, pressurized air through centre revolving joint to electromagnetism-gas-driving valve, again through shuttle valve to mentioning cylinder rod chamber, in pressurized air with mention and pull shift fork driven gear to move under the effect of cylinder return spring force backward, drive guide rod to move simultaneously backward, de-tooth travel switch is made to push down guide rod, de-tooth indicator lamp is bright, gear and driven gear are thrown off, simultaneously, place kick on gear just in time drops in bayonet lock mating groove, gear reach is stoped to be engaged with driven gear.Then bayonet lock button is disconnected, two-position five-way electromagnetic pneumatic valve events is in and blocks bayonet lock position, pressurized air through centre revolving joint to electromagnetism-gas-driving valve, arrive bayonet lock reservoir 202 rodless cavity again, under pressurized air, bayonet lock cylinder retracing spring and bayonet lock Gravitative Loads, pull bayonet lock to move down in slide, make bayonet lock snap in the draw-in groove of guide rod, reserved 5mm gap between bayonet lock and draw-in groove, the travel switch simultaneously making bayonet lock push down bayonet lock to block, it is bright that bayonet lock blocks indicator lamp.
Loopback takes off tooth safety precaution
During wrecking crane loopback, open wrecking crane train pipe angle cork, locomotive fills wind to hoisting crane, pressurized air through hoisting crane angle cock to mentioning shuttle valve one, again to mentioning cylinder rod chamber, in pressurized air with mention under cylinder action of reset spring, on castellated shaft, place kick blocks gear under Compress Spring effect simultaneously.Train pipe pressurized air bayonet lock shuttle valve two arrives bayonet lock cylinder rod chamber again, and under pressurized air, bayonet lock cylinder action of reset spring and in bayonet lock deadweight situation, bayonet lock snaps in the draw-in groove of guide rod, reserved 5mm gap between bayonet lock and draw-in groove.Gear can not engage with driven gear in this case, is safe in loopback process.
If the hoisting crane train pipe non-compressed air when loopback, by mentioning that return spring force holds driving gear, gear can not be engaged with driven gear, is also safe during loopback.Once retracing spring is tired and pulling force is inadequate, or retracing spring damages, even position spring breakage, only under Compress Spring effect, block gear by place kick on castellated shaft, in whole quick loopback operational process, hoisting crane loopback epidemic situation comparison is complicated, and just with vibration, sometimes place kick card does not live gear, cause occurring that gear engages with driven gear, driven gear (being fixed on moving axis) High Rotation Speed driven gear high speed rotating, make low-speed big torque motor High Rotation Speed, motor must be damaged, cause gearbox parts to damage to come off, cause traffic safety accident.
If when above-mentioned three kinds of loopback safety mechanisms lost efficacy, bayonet lock worked in the bayonet lock mating groove of guide rod.Under bayonet lock relies on bayonet lock cylinder return spring force and bayonet lock deadweight situation, bayonet lock falls in the bayonet lock mating groove of guide rod.Bayonet lock is in the draw-in groove of guide rod during mobile 5mm, and bayonet lock blocks the bayonet lock mating groove place of guide rod completely, and hoisting crane loopback is also safe.
Beneficial effect of the present invention: (1) native system is used for the safe loopback operation of locomotive crane, and function contains the safe loopback of all 100t, 160t locomotive cranes and takes off tooth safety device.
(2) carry out de-tooth operation under the state that native system can make operator be separated with de-tooth operation field completely, realize " people is separated with scene ".
(3) by the button on the driver operation control panel of crane cabin, control hoisting crane rely on oneself traveling mention and loopback take off lift sub pin device, save cost of labor.
(4) native system makes full use of logic safety mechanism, four layers of insurance of sequencing.One deck hoisting crane train pipe pressurized air pushes down cylinder piston, makes gear be in disengaged condition; Under the action of reset spring of two layers of double-acting cylinder, gear is stoped to engage with driven gear; On three layers of castellated shaft, place kick blocks gear under Compress Spring effect, prevents gear from engaging with driven gear; Four layers of bayonet lock card guide rod, prevention gear engages with driven gear.
(5) during hoisting crane loopback, utilize the pressurized air of train pipe to push down bayonet lock cylinder piston, make bayonet lock snap in the bayonet lock mating groove of guide rod, prevention gear engages with driven gear.
(6), during hoisting crane loopback, utilize the pressurized air of train pipe to push down to mention cylinder piston, gear and driven gear are thrown off, and loopback is in a safe condition.
(7) control system and driver train preferentially adopt pneumatics, pressure sensor technique.
(8) reservoir electromagnetic valve adopts two-position five-way electromagnetism-gas-driving valve, and electromagnetic valve is for often to open, and when operation, electromagnetic valve obtains electric, reduces power consumption.
(9) cylinder adopts the cylinder of double action strip retracing spring.
(10) guide rod adopts bayonet lock mode pre-locked, rises lock driving and driven being out of gear when other safety mechanism lost efficacy.
(11) place kick on gear is stuck on castellated shaft under spring force.
(12) bayonet lock moves in slide, and contrast locating is more accurate.
(13) bayonet lock can be stuck in the bayonet lock mating groove of guide rod by bayonet lock deadweight.
(14) bayonet lock is stuck in the bayonet lock mating groove of guide rod under the action of reset spring of cylinder.
(15) driver operate in driver's cab mention, bayonet lock button, have that indicator lamp shows de-tooth, bayonet lock snap in draw-in groove and to put in place situation.
The foregoing is only the preferred embodiment of invention, not in order to limit the present invention, any amendment done within all spirit at this and principle, equivalently to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a locomotive crane loopback takes off tooth insurance system, it is characterized in that, comprise: the center shaft (4) on housing (1) is fixed at housing (1) and two ends, described center shaft (4) is equipped with gear (2), described gear (2) can in the upper slip of center shaft (4), one end of described housing (1) is provided with mentions cylinder (5), describedly mention that the piston-rod end of cylinder (5) is connected with shift fork (7), described shift fork (7) is connected with gear (2), described in mention that cylinder (5) is connected with train line by airduct (10).
2. a kind of locomotive crane loopback according to claim 1 takes off tooth insurance system, it is characterized in that, described center shaft (4) is provided with gear and takes off tooth knock hole, described gear (2) is provided with registration device (3), described registration device (3) comprises spring and place kick, and described place kick can take off tooth knock hole with gear and match.
3. a kind of locomotive crane loopback according to claim 2 takes off tooth insurance system, and it is characterized in that, described center shaft (4) is castellated shaft.
4. a kind of locomotive crane loopback according to claim 1 takes off tooth insurance system, it is characterized in that, also comprise bayonet lock catch gear, described bayonet lock catch gear comprises, guide rod (8) and clamping body (9), described guide rod (8) is slidably mounted on housing (1), described guide rod (8) is connected with shift fork (7), described guide rod (8) is provided with bayonet lock mating groove, described clamping body (9) comprising: slide (91), described slide (91) is fixed on housing (1), bayonet lock (92) is provided with in described slide (91), described bayonet lock (92) is connected with bayonet lock cylinder (93), described bayonet lock (92) oscilaltion under the effect of bayonet lock cylinder (93) contacts with bayonet lock mating groove and is separated.
5. a kind of locomotive crane loopback according to claim 1 takes off tooth insurance system, it is characterized in that, described mentioning is provided with retracing spring (6) in cylinder (5), described retracing spring (6) one end with mention cylinder (5) bottom be connected, described retracing spring (6) other end with mention that the axis of the piston of cylinder (5) is connected, described retracing spring (6) state of nature lower piston axle with mention that cylinder (5) distance from bottom is the shortest.
6. a locomotive crane loopback takes off tooth insurance system, it is characterized in that, comprise: the center shaft (4) on housing (1) is fixed at housing (1) and two ends, described center shaft (4) is equipped with gear (2), described gear (2) can in the upper slip of center shaft (4), one end of described housing (1) is provided with mentions cylinder (5), describedly mention that the piston-rod end of cylinder (5) is connected with shift fork (7), described shift fork (7) is connected with gear (2), describedly mention that cylinder (5) is connected with train line by airduct (10), described center shaft (4) is provided with gear and takes off tooth knock hole, described gear (2) is provided with registration device (3), described registration device (3) comprises spring and place kick, described place kick can take off tooth knock hole with gear and match, described center shaft (4) is castellated shaft, also comprise bayonet lock catch gear, described bayonet lock catch gear comprises, guide rod (8) and clamping body (9), described guide rod (8) is slidably mounted on housing (1), described guide rod (8) is connected with shift fork (7), described guide rod (8) is provided with bayonet lock mating groove, described clamping body (9) comprising: slide (91), described slide (91) is fixed on housing (1), bayonet lock (92) is provided with in described slide (91), described bayonet lock (92) is connected with bayonet lock cylinder (93), described bayonet lock (92) oscilaltion under the effect of bayonet lock cylinder (93) contacts with bayonet lock mating groove and is separated, described mentioning is provided with retracing spring (6) in cylinder (5), described retracing spring (6) one end with mention cylinder (5) bottom be connected, described retracing spring (6) other end with mention that the axis of the piston of cylinder (5) is connected, described retracing spring (6) state of nature lower piston axle with mention that cylinder (5) distance from bottom is the shortest, described mentioning is provided with retracing spring (6) in cylinder (5), described retracing spring (6) one end with mention cylinder (5) bottom be connected, described retracing spring (6) other end with mention that the axis of the piston of cylinder (5) is connected, described retracing spring (6) state of nature lower piston axle with mention that cylinder (5) distance from bottom is the shortest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520951945.1U CN205187674U (en) | 2015-11-25 | 2015-11-25 | Railway crane loopbacks tooth insurance system of taking off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520951945.1U CN205187674U (en) | 2015-11-25 | 2015-11-25 | Railway crane loopbacks tooth insurance system of taking off |
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| Publication Number | Publication Date |
|---|---|
| CN205187674U true CN205187674U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520951945.1U Withdrawn - After Issue CN205187674U (en) | 2015-11-25 | 2015-11-25 | Railway crane loopbacks tooth insurance system of taking off |
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| CN (1) | CN205187674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253771A (en) * | 2015-11-25 | 2016-01-20 | 南车成都机车车辆有限公司 | Returning and gear-disengaging safety system of railway crane |
| CN107195981A (en) * | 2017-05-24 | 2017-09-22 | 深圳吉阳智能科技有限公司 | The pin winding mechanisms of volume three |
-
2015
- 2015-11-25 CN CN201520951945.1U patent/CN205187674U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253771A (en) * | 2015-11-25 | 2016-01-20 | 南车成都机车车辆有限公司 | Returning and gear-disengaging safety system of railway crane |
| CN107195981A (en) * | 2017-05-24 | 2017-09-22 | 深圳吉阳智能科技有限公司 | The pin winding mechanisms of volume three |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160427 Effective date of abandoning: 20170606 |