CN202705901U - Hanging beam trolley of hoisting mechanism of railway T-shaped beam bridge girder erection machine - Google Patents
Hanging beam trolley of hoisting mechanism of railway T-shaped beam bridge girder erection machine Download PDFInfo
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- CN202705901U CN202705901U CN2012201534500U CN201220153450U CN202705901U CN 202705901 U CN202705901 U CN 202705901U CN 2012201534500 U CN2012201534500 U CN 2012201534500U CN 201220153450 U CN201220153450 U CN 201220153450U CN 202705901 U CN202705901 U CN 202705901U
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Abstract
Provided is a hanging beam trolley of a hoisting mechanism of a railway T-shaped beam bridge girder erection machine, comprising at least one set of elevating and winding system. A double helix mechanical rope arranging device is disposed in a narrow space of the hoisting mechanism of the railway T-shaped beam bridge girder erection machine, and thereby steel ropes when being winded around a cylinder body will not be in a mess, and the service lifetime of the steel ropes can be prolonged. A final-stage brake device is disposed in the narrow space, and thereby automatic brake can be realized when a planetary gear hoist overspeeds, the T-shaped beam can be prevented from slipping off, and safety performance of the bridge girder erection machine can be improved. A monitoring device is provided, and thereby when any hoist stalls, each final-stage brake device brakes, and a main hoist motor is powered off and brakes, and the stalled hoist can be displayed by the monitoring device, facilitating fault determination and shortening maintenance time.
Description
Technical field
The technical field of the lifting mechanism that the utility model relates to relates in particular to a kind of hanging beam dolly of railway T-girder bridge girder erection lifting mechanism.
Background technology
At present, newly-built and the old line of China is transformed Speed 200 km/h and the T-shaped beam of following passenger-cargo co (logical bridge 2201 types, 2101 types), the single armed railway T-girder bridge girder erection that uses in the construction of 32 meters on railway and following concrete beam is above 150, and, demand along with domestic pulling domestic demand, and the railway construction further propelling of aspect such as go abroad, the quantity of Bridge Erector also will increase considerably.And setting up of single, double line T beam is a high risk job, and safety issue is outline in the industry always.
Railway T-girder bridge girder erection is the main construction machinery of building at present the China railways bridge, owing to being subject to the restriction of railway transportation (Railway Freight Transportation rule) and construction environment (track clearance in the tunnel), the contour structure size design of Bridge Erector is very compact, the arrangement space of its hanging beam dolly is narrow and small especially, existing railway T-girder bridge girder erection is owing to being subjected to the restriction of technical condition, its lifting mechanism is without wire rope winding device and hoist engine final stage check mechanism, the disorder cable phenomenon often occurs during the Bridge Erector Summarized Account of Bridge Erection Construction, cause service life of steel wire rope extremely short, average life span is 40 hole beams only, cause wire rope to change rope frequent, waste larger, there is simultaneously potential safety hazard, affects construction speed; The hoist engine that hoists in addition only has at a high speed level braking (motor side braking), when the Bridge Erector hanging beam is constructed, if brake breaks down or transmission system breaks down and cause the high speed shaft off-axis, when hoist engine self can't be braked, the beam sheet will landing, causes great security incident.
For overcoming these defectives, the shaft coupling of existing 900 tons of box beam bridge formation machines employing motor+band brake wheel+planet reel is as lifting mechanism, speed end adopts block brake to act on the shaft coupling of band brake wheel and brakes, the planet reel of low speed end adopts the hydraulic safe brake to act on the reel edge of a wing and brakes, but this Bridge Erector requisite space is larger, is only applicable to not have the situation of spatial limitation.
Therefore there is following defective in the prior art:
The disorder cable phenomenon often occurs in the hoisting system that hoists when 1. having the railway T-girder bridge girder erection Summarized Account of Bridge Erection Construction now, causes service life of steel wire rope extremely short, and average life span is 40 hole beams only, cause wire rope to change rope frequent, waste greatlyr, cost is high, simultaneously also there is potential safety hazard, affects construction speed.Some engineering construction unit sets up row rope workman at the frame outside of hoisting mechanism in order to reduce the turnover rate of wire rope when unloaded in addition, manually arranges rope, and this processing mode is dangerous large, and treatment effect is also bad; When being arranged, load because the pulling force of wire rope is excessive, is difficult to manually arrange rope.
2. the hoisting system that hoists of existing railway T-girder bridge girder erection only has at a high speed level braking (motor side braking), in Bridge Erector hanging beam hoisting mechanism for trolley hanging beam work progress, brake breaks down or transmission system breaks down and cause the high speed shaft off-axis, when hoist engine self can't be braked, the beam sheet will landing, gently then bridge pier and T beam are impaired, and be heavy then there is serious potential safety hazard in the fatal crass.
3. the hoisting system that hoists of existing railway T-girder bridge girder erection does not have supervising device, and in a single day this hoisting system that hoists goes wrong, and operating personnel can't know correlation circumstance, the stall conditions of the more uncontrollable hoisting system that hoists.
In view of the foregoing, in order to reduce the replacement frequency of wire rope, save cost, eliminate safe hidden trouble, improve the safety of equipment, designer of the present utility model is because defects, by concentrating on studies and designing, comprehensive experience and the achievement of being engaged in for many years related industry for a long time, research and design goes out a kind of hanging beam dolly of railway T-girder bridge girder erection lifting mechanism, to overcome defects.
Summary of the invention
The purpose of this utility model is to provide a kind of hanging beam dolly of railway T-girder bridge girder erection lifting mechanism, it is simple in structure, easy to operate, can not only effectively reduce the replacement frequency of wire rope, reduce the replacing number of times of wire rope, reduce cost and workman's labour intensity, and can further eliminate safe hidden trouble, improve the safety of equipment.
For achieving the above object, the utility model discloses a kind of hanging beam dolly of railway T-girder bridge girder erection lifting mechanism, this hanging beam dolly comprises at least one cover hoisting system that hoists, this hoisting system that hoists comprises power set, planetary gear cord winder, double helix machinery rope guide and control system at least, it is characterized in that:
These power set comprise elevator motor and dynamic retarding mechanism, this planetary gear cord winder comprises planetary gear, planet carrier, sun gear shaft, gear ring and spool body, one end of this sun gear shaft links to each other with dynamic retarding mechanism output shaft by the internal spline adapter sleeve, the rotation of elevator motor-driven dynamic retarding mechanism, thus drive the spool body rotation by planetary gear; The other end of this sun gear shaft is connected to mechanical rope guide by sprocket chain device;
This machinery rope guide comprises two-way screw rod and a sheave, this reverse-flighted screw is provided with the thread groove of left and right sides both direction and be arranged in parallel with spool shaft, mutual transition forms the loop of sealing to the thread groove of this left and right sides both direction at two of this double threaded screw, this sheave comprises two and is oppositely arranged with the guide wheel of clamped wire rope and embeds shuttle piece in the thread groove of reverse-flighted screw, thereby when reverse-flighted screw rotates, this sheave can axially moving around along this reverse-flighted screw, when rotating a circle, spool body drives sheave along the distance that moves axially a wirerope diameter of screw rod, thereby when wire rope when complete one deck arrives the spool body end, the shuttle piece also is transitioned on the screw thread of other direction at the screw thread of reverse-flighted screw head from a direction simultaneously, realizes wire rope multilayer row rope and disorder cable not;
Rotary encoder on the sprocket wheel that control system comprises with spool body links to each other and controller.
Wherein, the gearratio of chain wheel actuator is 3.
Wherein also comprise the final stage check mechanism, this final stage check mechanism comprises braked wheel, brake band, connector, hydraulic cylinder and pumping plant, this braked wheel and spool body are wholely set together rotation, this brake band is around the circumference of braked wheel, the one end maintains static, and the other end is connected to the drive end of hydraulic cylinder by connector.
Wherein, be surrounded by wearing layer on the circumference of this braked wheel, this brake band is the steel band on 5/6ths circumference of braked wheel, this connector comprises fixed cover and the rotatable cylindrical body that passes fixed cover, one end of cylindrical body is provided with the little cam of the drive end that is articulated to hydraulic cylinder, the other end is provided with the big cam of the other end that is connected to brake band, because the leverage principle of big or small cam produces larger brake force.
Wherein, this final stage check mechanism also includes the Hynautio-steering of controlling hydraulic cylinder, this Hynautio-steering comprises oil adsorption filter, motor M, oil pump, overflow valve, one way valve, pressure switch, electromagnetic valve, one-way throttle valve, accumulator, oil cylinder and manual pump, one end of oil pump is connected to fuel tank by oil adsorption filter, oil pump is controlled by motor M, the other end of oil pump is connected to the entrance of overflow valve and one way valve, the outlet of overflow valve is connected to fuel tank by a cleaner, the outlet of one way valve is connected to entrance and pressure switch and the accumulator of electromagnetic valve and one-way throttle valve, the outlet of electromagnetic valve is connected to fuel tank by this cleaner equally, the outlet of one-way throttle valve is connected to oil cylinder and manual pump, and the other end of this manual pump is connected to fuel tank by another cleaner.
Wherein, also comprise the final stage check mechanism, this final stage check mechanism comprises with in the braking brake drum of the affixed rotation of spool body, two two shoe type shoe brakes, a two shoe brake in being connected to form with Compress Spring by brake cylinder between the two braking shoe plates.
Wherein, this final stage check mechanism also includes the Hynautio-steering of controlling hydraulic cylinder, this Hynautio-steering comprises oil adsorption filter, motor M, oil pump, overflow valve, one way valve, pressure switch, electromagnetic valve, one-way throttle valve, accumulator, oil cylinder and manual pump, one end of oil pump is connected to fuel tank by oil adsorption filter, oil pump is controlled by motor M, the other end of oil pump is connected to the entrance of overflow valve and one way valve, the outlet of overflow valve is connected to fuel tank by a cleaner, the outlet of one way valve is connected to entrance and pressure switch and the accumulator of electromagnetic valve and one-way throttle valve, the outlet of electromagnetic valve is connected to fuel tank by this cleaner equally, the outlet of one-way throttle valve is connected to oil cylinder and manual pump, and the other end of this manual pump is connected to fuel tank by another cleaner.
By said structure, the hanging beam dolly of railway T-girder bridge girder erection lifting mechanism of the present utility model can be realized following technique effect:
(1) increases double helix machinery rope guide at small space, disorder cable not when guaranteeing on the spool body multilayer wirerope-winding, prolonging service life of steel wire.
(2) increase the final stage check mechanism in small space, automatic brake when realizing the hoist engine hypervelocity prevents the landing of T-shaped beam sheet, improves the security performance of Bridge Erector.
(3) increase supervising device, when arbitrary hoist engine stall, each is the braking of level check mechanism not, while master winch motor power-off brake, and by monitoring system demonstration stall hoist engine, be convenient to fault and judge, shorten the repair time.
The utility model will further be described in detail by the following specific embodiments, and further tie
Closing the description of the drawings will be more apparent and obvious to understand.
Description of drawings
Fig. 1 has shown the structural representation of the hanging beam dolly of railway T-girder bridge girder erection lifting mechanism of the present utility model.
Fig. 2 has shown the phantom of hanging beam dolly shown in Figure 1.
Fig. 3 has shown the hydraulic system schematic diagram of the hanging beam dolly of railway T-girder bridge girder erection lifting mechanism of the present utility model.
Fig. 4 has shown the schematic diagram of another embodiment of final stage check mechanism of the present utility model.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the structural representation that has shown the hanging beam dolly of railway T-girder bridge girder erection lifting mechanism of the present utility model, railway T-girder bridge girder erection lifting mechanism of the present utility model comprises at least one hanging beam dolly shown in Figure 1, preferably comprise two hanging beam dollies, this hanging beam dolly comprises at least one cover hoisting system that hoists, preferably as shown in the figure, include the symmetrically arranged hoisting system that hoists of two covers, namely preferred, can have the quadruplet hoisting system that hoists, so that the elevator that hoists of four wire rope to be provided.
This hoisting system that hoists comprises power set, planetary gear cord winder, double helix machinery rope guide, final stage check mechanism, Hydraulic Station 3 and control system at least.
Power set wherein comprise elevator motor 11 and reducing gear, the planetary gear cord winder comprises planetary gear, planet carrier, sun gear shaft, gear ring and spool body, basic identical in its structure and the prior art, be not described in detail at this, one end of this sun gear shaft links to each other with dynamic retarding mechanism output shaft by the internal spline adapter sleeve, elevator motor 11 drives the rotation of dynamic retarding mechanism, dynamic retarding mechanism output shaft links to each other with sun gear shaft, thereby drives the spool body rotation by planetary gear; The other end is connected with sprocket chain device 8 by spool body, sprocket chain device 8 is connected to double helix machinery rope guide, this double helix machinery rope guide comprises reverse-flighted screw 2 and sheave 1, this reverse-flighted screw 2 is provided with the thread groove of left and right sides both direction and be arranged in parallel with the reel axon, mutual transition forms the loop of sealing to the thread groove of this left and right sides both direction at two of this double threaded screw, this sheave 1 comprises two and is oppositely arranged with the guide wheel of clamped wire rope and embeds shuttle piece in the thread groove of reverse-flighted screw 2, thereby when reverse-flighted screw 2 rotation, this sheave 1 can axially moving around along this reverse-flighted screw 2, when spool body rotates a circle, make reverse-flighted screw 2 rotations, cause shuttle piece axially moving relative to screw rod, drive sheave 1 just in time moves a wirerope diameter along axially (both same relative volume cylindrical shell is axial) of screw rod distance, thereby when wire rope when complete one deck arrives the spool body end, the shuttle piece also is transitioned on the screw thread of other direction at the screw thread of reverse-flighted screw head from a direction simultaneously, realizes wire rope multilayer row rope and disorder cable not.
For realizing that sheave 1 is along the distance that axially just in time moves a wirerope diameter of screw rod, slot pitch that can thread groove is set to equal the diameter of wire rope, to be set to gearratio be 1 to the chain sprocket device simultaneously, reverse-flighted screw 2 was rotated a circle equally, sheave 1 is realized the purpose of a mobile wirerope diameter along the slot pitch of a thread groove of screw axial at this moment; Slot pitch that also can thread groove is set to equal the twice of the diameter of wire rope, to be set to gearratio be 2 to the chain sprocket device simultaneously, both when rotating a circle, spool body made reverse-flighted screw 2 rotation half cycles, sheave 1 is along the slot pitch of half thread groove of screw axial at this moment, the same purpose that realizes a mobile wirerope diameter, by that analogy, thus, can pass through this machinery rope guide, avoid the disorder cable phenomenon that when the wire rope multi-lay winding, occurs, improved rope service-life, reduced the wire rope loss, reduce cost, improve construction speed.
Final stage check mechanism wherein comprises braked wheel 7, brake band 6, connector 5 and hydraulic cylinder 4, this braked wheel 7 is wholely set with together rotation with spool body 10, this brake band 6 is around the circumference of braked wheel 7, the one end is fixing different, the other end is connected to the drive end of hydraulic cylinder 4 by connector 5, preferably, be surrounded by wearing layer on the circumference of this braked wheel 7, this brake band 6 is the steel band on 5/6ths circumference of braked wheel, this connector 5 comprises fixed cover and the rotatable cylindrical body that passes fixed cover, one end of cylindrical body is provided with the little cam of the drive end that is articulated to hydraulic cylinder 4, the other end is provided with the big cam of the other end that is connected to brake band 6, big or small cam setting by the cylindrical body two ends, when the drive end of hydraulic cylinder 4 bounces back, little cam driven cylindrical body rotation drives the big cam revolution simultaneously, and brake band 6 encases the periphery of braked wheel 7 so that the braking of spool body 10 to be provided thus.Because the leverage principle of big or small cam, the larger pulling force of position generation big cam is connected with brake band 6 can better produce brake force thus, and wearing layer further frictional force and the braking effect of having improved be set.
And this final stage check mechanism also includes the Hynautio-steering (referring to Fig. 3) of controlling hydraulic cylinder 4, this Hynautio-steering comprises oil adsorption filter 21, motor M 22, oil pump 23, overflow valve 24, one way valve 25, pressure switch 26, electromagnetic valve 27, one-way throttle valve 28, accumulator 29, oil cylinder 30 and manual pump 31, one end of oil pump 23 is connected to fuel tank by oil adsorption filter 21, oil pump 23 is by motor M 22 controls, the other end of oil pump 23 is connected to the entrance of overflow valve 24 and one way valve 25, the outlet of overflow valve 24 is connected to fuel tank by a cleaner, the outlet of one way valve 25 is connected to entrance and pressure switch 26 and the accumulator 29 of electromagnetic valve 27 and one-way throttle valve 28, the outlet of electromagnetic valve 27 is connected to fuel tank by this cleaner equally, the outlet of one-way throttle valve 28 is connected to oil cylinder 30 and manual pump 31, the other end of this manual pump 31 is connected to fuel tank by another cleaner, and preferably, the import and export of this manual pump 31 are provided with one way valve.
The below introduces the principle of this Hynautio-steering, when normal operation, system provides and opens a sluice gate signal to electrical control cubicles, motor M 22 and electromagnetic valve 27 get electric, and pressure oil enters brake oil cylinder 30(corresponding to hydraulic cylinder 4 by one way valve 25, one-way throttle valve 28), oil cylinder protracts and overcomes the effect of rod chamber spring force, brake band discharges gradually, after brake band release put in place, the limit switch action was sent release signal to hoisting mechanism; Wherein each opens a sluice gate respectively corresponding each check mechanism of signal; Thereby realize the release of check mechanism, be convenient to hoisting system work.Brake is after release, the action of pressure switch contact disconnected after system pressure reached pressure switch 26 setting values (for example 5MPA), motor M 22 stalls, electromagnetic valve keeps getting electricity condition, this moment, brake was in the packing state after the release, when pipeline has leakage, in case system pressure is lower than predetermined value (for example 4MPA), the action of pressure switch 26 contacts is closed, and motor M 22 gets electric, system's ftercompction, pressure is to setting value (such as 5MPA), and motor cuts off the power supply, so do action, constant pressure when keeping hoisting hoisting system work makes the hoisting system normal operation that hoists.
Control system wherein comprises rotary encoder 9 and the controller of the other end that is arranged at spool shaft, this controller can be PLC, rotary encoder 9 is connected with the rotating speed with spool shaft with controller and passes to controller, when the spool body stall of the hoisting system that hoists, rotary encoder 9 with the transfer of data that detects to PLC, PLC will transmit data and the setting value come and compare, elevator motor 11 when this is worth greater than setting value, motor 22, electromagnetic valve 27 dead electricity disconnect, pressure oil is by one-way throttle valve 28, electromagnetic valve 27 is got back to fuel tank, brake oil cylinder 30 resets under the active force of spring, the drive end retraction of hydraulic cylinder 4, cause brake band 6 brake sticking brakes wheel 7, the final stage braking function of the elevator of realizing hoisting.
When the encoder of the hoisting system that hoists detects the spool body hypervelocity of any one hoisting system that hoists, two Hydraulic Station electromagnetic valve 27 equal dead electricity, the simultaneously brake hard of four table brakes, indicator lamp shows the position of hoist hoisting system hypervelocity and hypervelocity spool body on the electric control box, and the feedback overspeed signal is to master control system, with elevator motor 11 power-off brakes, realize multistage brake simultaneously, improve the security performance of complete machine.
And final stage check mechanism of the present utility model can be not limited to said structure, referring to Fig. 4, as when the spatial shape size is enough large, this final stage check mechanism can comprise with the braking brake drum 41 of spool body 10 affixed rotations, interior two shoe type shoe brake 42, are connected connection with Compress Spring by brake cylinder 43 between the two braking shoe plates 42, a two shoe brake in forming thus makes Compress Spring 44 realize release function when brake cylinder 43 shrinks; When the rod chamber of brake cylinder 43 during without pressure oil Compress Spring 44 return pushing tow shoe brakes realize braking function (its hydraulic control schematic diagram such as Fig. 2).
It is evident that, above description and record only are for example rather than in order to limit disclosure of the present utility model, application or use.Although described in an embodiment and be described in the drawings embodiment, but the optimal mode that the utility model does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present to be implementing the specific examples of instruction of the present utility model, and scope of the present utility model will comprise any embodiment of the manual that falls into the front and appended claim.
Claims (7)
1. the hanging beam dolly of a railway T-girder bridge girder erection lifting mechanism, this hanging beam dolly comprises at least one cover hoisting system that hoists, this hoisting system that hoists comprises power set, planetary gear cord winder, double helix machinery rope guide and control system at least, it is characterized in that:
These power set comprise elevator motor and dynamic retarding mechanism, this planetary gear cord winder comprises planetary gear, planet carrier, sun gear shaft, gear ring and spool body, one end of this sun gear shaft links to each other with dynamic retarding mechanism output shaft by the internal spline adapter sleeve, the rotation of elevator motor-driven dynamic retarding mechanism, thus drive the spool body rotation by planetary gear; The other end of this sun gear shaft is connected to mechanical rope guide by sprocket chain device;
This machinery rope guide comprises two-way screw rod and a sheave, this reverse-flighted screw is provided with the thread groove of left and right sides both direction and be arranged in parallel with spool shaft, mutual transition forms the loop of sealing to the thread groove of this left and right sides both direction at two of this double threaded screw, this sheave comprises two and is oppositely arranged with the guide wheel of clamped wire rope and embeds shuttle piece in the thread groove of reverse-flighted screw, thereby when reverse-flighted screw rotates, this sheave can axially moving around along this reverse-flighted screw, when rotating a circle, spool body drives sheave along the distance that moves axially a wirerope diameter of screw rod, thereby when wire rope when complete one deck arrives the spool body end, the shuttle piece also is transitioned on the screw thread of other direction at the screw thread of reverse-flighted screw head from a direction simultaneously, realizes wire rope multilayer row rope and disorder cable not;
Rotary encoder on the sprocket wheel that control system comprises with spool body links to each other and controller.
2. hanging beam dolly as claimed in claim 1 is characterized in that, the gearratio of chain wheel actuator is 3.
3. hanging beam dolly as claimed in claim 1 or 2, it is characterized in that also comprising the final stage check mechanism, this final stage check mechanism comprises braked wheel, brake band, connector, hydraulic cylinder and pumping plant, this braked wheel and spool body are wholely set together rotation, this brake band is around the circumference of braked wheel, the one end maintains static, and the other end is connected to the drive end of hydraulic cylinder by connector.
4. hanging beam dolly as claimed in claim 3, it is characterized in that, be surrounded by wearing layer on the circumference of this braked wheel, this brake band is the steel band on 5/6ths circumference of braked wheel, this connector comprises fixed cover and the rotatable cylindrical body that passes fixed cover, one end of cylindrical body is provided with the little cam of the drive end that is articulated to hydraulic cylinder, the other end is provided with the big cam of the other end that is connected to brake band, because the leverage principle of big or small cam produces larger brake force.
5. hanging beam dolly as claimed in claim 3, it is characterized in that, this final stage check mechanism also includes the Hynautio-steering of controlling hydraulic cylinder, this Hynautio-steering comprises oil adsorption filter, motor M, oil pump, overflow valve, one way valve, pressure switch, electromagnetic valve, one-way throttle valve, accumulator, oil cylinder and manual pump, one end of oil pump is connected to fuel tank by oil adsorption filter, oil pump is controlled by motor M, the other end of oil pump is connected to the entrance of overflow valve and one way valve, the outlet of overflow valve is connected to fuel tank by a cleaner, the outlet of one way valve is connected to entrance and pressure switch and the accumulator of electromagnetic valve and one-way throttle valve, the outlet of electromagnetic valve is connected to fuel tank by this cleaner equally, the outlet of one-way throttle valve is connected to oil cylinder and manual pump, and the other end of this manual pump is connected to fuel tank by another cleaner.
6. hanging beam dolly as claimed in claim 1 or 2, it is characterized in that also comprising the final stage check mechanism, this final stage check mechanism comprises with in the braking brake drum of the affixed rotation of spool body, two two shoe type shoe brakes, a two shoe brake in being connected to form with Compress Spring by brake cylinder between the two braking shoe plates.
7. hanging beam dolly as claimed in claim 6, it is characterized in that, this final stage check mechanism also includes the Hynautio-steering of controlling hydraulic cylinder, this Hynautio-steering comprises oil adsorption filter, motor M, oil pump, overflow valve, one way valve, pressure switch, electromagnetic valve, one-way throttle valve, accumulator, oil cylinder and manual pump, one end of oil pump is connected to fuel tank by oil adsorption filter, oil pump is controlled by motor M, the other end of oil pump is connected to the entrance of overflow valve and one way valve, the outlet of overflow valve is connected to fuel tank by a cleaner, the outlet of one way valve is connected to entrance and pressure switch and the accumulator of electromagnetic valve and one-way throttle valve, the outlet of electromagnetic valve is connected to fuel tank by this cleaner equally, the outlet of one-way throttle valve is connected to oil cylinder and manual pump, and the other end of this manual pump is connected to fuel tank by another cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201534500U CN202705901U (en) | 2012-04-12 | 2012-04-12 | Hanging beam trolley of hoisting mechanism of railway T-shaped beam bridge girder erection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201534500U CN202705901U (en) | 2012-04-12 | 2012-04-12 | Hanging beam trolley of hoisting mechanism of railway T-shaped beam bridge girder erection machine |
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| Publication Number | Publication Date |
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| CN202705901U true CN202705901U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201534500U Withdrawn - After Issue CN202705901U (en) | 2012-04-12 | 2012-04-12 | Hanging beam trolley of hoisting mechanism of railway T-shaped beam bridge girder erection machine |
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| CN (1) | CN202705901U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628254A (en) * | 2012-04-12 | 2012-08-08 | 中铁重工有限公司 | Lifting mechanism for railway T-shaped girder bridge erecting machine |
| CN104032682A (en) * | 2014-06-13 | 2014-09-10 | 中铁重工有限公司 | Chain opening method for hydraulic gantry transfer crane |
| CN104831636A (en) * | 2015-05-27 | 2015-08-12 | 中铁重工有限公司 | Railway T-beam rescue trolley and rescue method |
-
2012
- 2012-04-12 CN CN2012201534500U patent/CN202705901U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628254A (en) * | 2012-04-12 | 2012-08-08 | 中铁重工有限公司 | Lifting mechanism for railway T-shaped girder bridge erecting machine |
| CN102628254B (en) * | 2012-04-12 | 2015-03-11 | 中铁重工有限公司 | Lifting mechanism for railway T-shaped girder bridge erecting machine |
| CN104032682A (en) * | 2014-06-13 | 2014-09-10 | 中铁重工有限公司 | Chain opening method for hydraulic gantry transfer crane |
| CN104831636A (en) * | 2015-05-27 | 2015-08-12 | 中铁重工有限公司 | Railway T-beam rescue trolley and rescue method |
| CN104831636B (en) * | 2015-05-27 | 2016-05-11 | 中铁重工有限公司 | A kind of railway T-beam rescue trolley and rescue mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20150311 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20150311 |
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| RGAV | Abandon patent right to avoid regrant |