CN202884934U - Synchronous drive device for mechanical fire grate of fire grate type house garbage incinerator - Google Patents
Synchronous drive device for mechanical fire grate of fire grate type house garbage incinerator Download PDFInfo
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- CN202884934U CN202884934U CN 201220505672 CN201220505672U CN202884934U CN 202884934 U CN202884934 U CN 202884934U CN 201220505672 CN201220505672 CN 201220505672 CN 201220505672 U CN201220505672 U CN 201220505672U CN 202884934 U CN202884934 U CN 202884934U
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- grate
- hydraulic cylinder
- fire grate
- moving
- push rod
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Abstract
The utility model discloses a synchronous drive device for a mechanical fire grate of a fire grate type house garbage incinerator. The device consists of hydraulic cylinders, position detection switchs, an electromagnetic valve group (comprising stop valves, a throttle valve, a three-position four-way electromagnetic reversing valve, a pressure regulating valve, a two-position four-way electromagnetic reversing valve, and pressure measuring connection heads), hydraulic pipes, and a controlling device (PLG or DCS) which controls the movement of the hydraulic cylinder. The device can drive driving beams at two sides of the fire grate to move forward and move back synchronously, force is borne by a moving fire grate part of the mechanical fire grate in a balanced manner, the moving fire grate part of the mechanical fire grate can move stably, abrasion caused by an asynchronous mechanical fire grate can be reduced, and service life can be prolonged.
Description
Technical field
The utility model relates to the consumer waste incineration field, particularly a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration.
Background technology
The stoker fired grate of current grate-type domestic waste incineration all is comprised of the fire grate piece and the drive unit thereof that become row or be arranged in line, become row or the moving grate piece of embarking on journey and fixed grate piece alternately to arrange, progressively mobile downstream by the rubbish on the continuous reciprocating action promotion fire grate of moving grate.Take the fire grate that is arranged in line as example, the travelling oven stringer of every section fire grate all is fixed on the driving beam of both sides, by promoting to drive the reciprocating action that realizes the moving grate piece that moves back and forth of beam.Promote to drive the synchronously promotion of two push rods that beam reciprocatingly moves, just can make moving grate part straight ahead, if the displacement of two push rods is asynchronous, the moving grate part will be advanced at a slant, can greatly increase like this wearing and tearing of fire grate, reduce its service life.
For solving the displacement synchronous problem of push rod, a lot of equipment producers have adopted the mechanical synchronization mode, are exactly two same driving shafts of Hydraulic Cylinder, and two push rods are installed at these driving shaft two ends, be used for promoting synchronously moving grate and drive beam, scheme as depicted in figs. 1 and 2.Two hydraulic cylinders 3 are connected with magnetic valve group 13 respectively and are the mode of being connected in parallel, the same driving shaft 14 of these two hydraulic cylinders, 3 common promotions, two push rods 15 are installed at driving shaft 14 two ends, are used for promoting synchronously moving grate and drive beam 2, and then promote synchronously moving grate crossbeam 1.Carry out position probing by setting position detecting unit 5 and 6, the position probing data are passed to controller 16, controller 16 is the break-make of 3-position 4-way solenoid directional control valve 10 oil circuit controls in the electromagnetic valve for adjusting group 13 accordingly.Though this scheme can solve better the both sides moving grate and drive the synchronous problem of beam, but because driving shaft 14 rotates around the axle center, it is by bent push rod 15 than promoting moving grate driving beam 2, the movement locus of push rod 15 is not straight line like this, but a face, the easy so bad problem of furnace wall sealing that causes.Be installed in seal 18 on the furnace wall 17 and be mainly used to make air compartment and outside atmosphere below the fire grate isolated, prevent that the combustion air of high temperature from leaking outside.A lot of projects that adopt above-mentioned synchronization scenario all exist seal to be difficult to carry out the shortcoming of sealing, and seal easily damages, and cause the high-temp combustion air leak, and not only damage equipment also can threaten to personal safety.
The utility model content
When solving the displacement synchronous problem of push rod, can not solve the defective of furnace wall sealing problem in order to overcome prior art, the utility model provides a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, it is guaranteeing that both sides moving grate driving beam has also solved the problem that furnace wall seals in synchronous, reaches good sealing effectiveness.
The technical solution of the utility model is as follows:
A kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, be connected with the moving grate piece of domestic waste incineration, comprise the magnetic valve group, position detecting switch, controller, hydraulic cylinder and moving grate piece propulsive mechanism, described magnetic valve group is connected with position detecting switch with described controller and is connected, described controller is controlled described magnetic valve group by the signal that the detection position sense switch transmits, described hydraulic cylinder and described magnetic valve group be connected moving grate piece propulsive mechanism and be connected respectively, described moving grate piece propulsive mechanism arranges two groups, and is separately positioned on the both sides of described moving grate piece;
Described hydraulic cylinder arranges two, and the oil circuit of described two hydraulic cylinders adopts series system to connect;
Described each hydraulic cylinder is connected with one group of moving grate piece propulsive mechanism, and the transmission of power point-blank between described hydraulic cylinder and the moving grate piece propulsive mechanism.
Preferably, described moving grate piece comprises the moving grate crossbeam, and described every group of moving grate piece propulsive mechanism comprises that interconnected moving grate drives beam and drives the beam push rod, and described moving grate drives beam and is connected with the moving grate crossbeam;
Described each hydraulic cylinder is equipped with the hydraulic cylinder push rod, described hydraulic cylinder push rod, drive the beam push rod, moving grate drives beam and connects successively, and described hydraulic cylinder push rod, drives transmission that beam push rod, moving grate drive power between the beam point-blank.
Preferably, described hydraulic cylinder push rod and driving beam push rod, described driving beam push rod and moving grate drive between the beam and all connect with hinging manner.
Preferably, described position detecting switch comprises position position detecting switch behind fire grate anteposition position detecting switch and the fire grate, detects respectively and arrange front position and the back-end location of fire grate, adjusts the stroke of fire grate.
Preferably, described magnetic valve group comprises a 3-position 4-way solenoid directional control valve and two four-way electromagnetic reversing valves, the advancing, retreat and stop of three Position Control fire grates of described 3-position 4-way solenoid directional control valve, described controller respectively with described 3-position 4-way solenoid directional control valve be connected two four-way electromagnetic reversing valves and be connected, and realize motion control to fire grate by the control to these two solenoid directional control valves.
Preferably, the advancing/fuel-displaced oil circuit of two hydraulic cylinders of described two four-way electromagnetic reversing valves series connection, the moving grate of the both sides that reset drives beam and gets back to initial back-end location.
Preferably, between described hydraulic cylinder and the magnetic valve group, be connected by oil line pipe between inner each valve of described magnetic valve group.
Preferably, described magnetic valve group also comprises stop valve, choke valve, pressure-regulating valve and pressure measuring tie-in, described stop valve and choke valve are arranged between described magnetic valve group oil-in and the described 3-position 4-way solenoid directional control valve, described pressure-regulating valve is arranged between described 3-position 4-way solenoid directional control valve and the described hydraulic cylinder, and described pressure measuring tie-in is arranged on the oil line pipe that is connected with described hydraulic cylinder.
Preferably, described hydraulic cylinder is hydraulic cylinder with double piston rods, and described two hydraulic cylinder with double piston rods specifications are identical; Described controller is PLC or DCS cyclelog.
Preferably, also comprise furnace wall, seal and fixed support, described hydraulic cylinder is fixed on the furnace wall by fixed support, and the push rod of described hydraulic cylinder is connected with furnace wall by seal.
Compared with prior art, the beneficial effects of the utility model are as follows:
The one, the utility model is realized two hydraulic cylinder series systems by the design to the magnetic valve group, has solved the stationary problem of stoker fired grate drive unit;
The 2nd, the utility model designs point-blank by the transmission that hydraulic cylinder push rod, driving beam push rod, moving grate is driven power between the beam, specifically by the hydraulic cylinder push rod with drive the beam push rod, drive beam push rod and moving grate and drive transmission that the chain connection mode between the beam exerts all one's strength point-blank, solved the problem of furnace wall sealing.
The moving grate that device of the present utility model can promote the fire grate both sides drives the beam advanced in unison and retreats, and makes the moving grate part stress balance of stoker fired grate, and motion has steadily reduced the asynchronous wearing and tearing that bring, and has improved service life.
Certainly, implement arbitrary product of the present utility model and might not need to reach simultaneously above-described all advantages.
Description of drawings
Fig. 1 is the synchronous drive device structural representation of stoker fired grate in the prior art;
Fig. 2 is the structural representation of the moving grate piece propulsive mechanism of stoker fired grate in the prior art;
Fig. 3 is the structural representation of the synchronous drive device of the utility model embodiment stoker fired grate;
Fig. 4 is the structural representation of the moving grate piece propulsive mechanism of the utility model embodiment stoker fired grate.
The specific embodiment
The utility model provides a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, it has solved the mode of hydraulic cylinder series connection setting by the magnetic valve group being designed employing the displacement synchronous problem of driving beam push rod, and by hydraulic cylinder push rod and driving beam push rod are designed to the sealing problem that strength transmission has solved the furnace wall seal point-blank.
The below is further described the utility model with specific embodiment by reference to the accompanying drawings.In following examples, represent same or analogous element with mark identical among the figure that describes prior art in the background technology.
Embodiment
Referring to Fig. 3, the synchronous drive device of the stoker fired grate of the grate-type domestic waste incineration of the present embodiment, be connected with the moving grate piece of domestic waste incineration, comprise magnetic valve group 13, position detecting switch 5 and 6(are respectively position position detecting switch 6 behind fire grate anteposition position detecting switch 5 and the fire grate), controller 16, hydraulic cylinder 3 and moving grate piece propulsive mechanism, magnetic valve group 13 is connected with position detecting switch and is connected with controller 16 respectively with being connected, controller 16 is controlled magnetic valve group 13 by detection position sense switch 5 and 6 signals that transmit, hydraulic cylinder 3 and magnetic valve group 13 and moving grate piece propulsive mechanism are connected respectively, moving grate piece propulsive mechanism arranges two groups, and is separately positioned on the both sides of moving grate piece; Hydraulic cylinder 3 arranges two, and the oil circuit of two hydraulic cylinders 3 adopts series system to connect; Each hydraulic cylinder is connected with one group of moving grate piece propulsive mechanism, and between hydraulic cylinder 3 and the moving grate piece propulsive mechanism power transmission point-blank.Position position detecting switch 6 detects and arranges front position and the back-end location of fire grate behind fire grate anteposition position detecting switch 5 and the fire grate, adjusts the stroke of fire grate.
In the present embodiment, the hydraulic circuit of two hydraulic cylinders 3 adopts the mode of series connection to connect as shown in Figure 3, two hydraulic cylinders 3 adopt the identical hydraulic cylinder with double piston rods of specification, how much hydraulic oil each hydraulic cylinder oil inlet advances when motion like this, how much oil oil-out just goes out, the hydraulic oil that hydraulic cylinder goes out all enters into again another hydraulic cylinder the inside, pushing piston moves, because the specification of two hydraulic cylinders is identical, so the displacement that two hydraulic cylinders move is identical, the moving grate that can drive the fire grate both sides drives the beam synchronizing moving.
In the present embodiment, controller 16 can be PLC or DCS cyclelog, specifically selects in the present embodiment the PLC cyclelog, and other also can select the DCS cyclelog in implementing at the utility model.
In the present embodiment, the moving grate piece comprises moving grate crossbeam 1, moving grate piece propulsive mechanism comprises that interconnected moving grate drives beam 2 and drives beam push rod 15, moving grate drives beam 2 and is connected with moving grate crossbeam 1, be specially, moving grate is set respectively in the both sides of moving grate crossbeam 1 drives beam 2, and moving grate crossbeam 1 is fixed on the moving grate driving beam 2 of its both sides; Moving grate drives beam 2 and comprises two location status, is respectively anteposition position and position, rear position.
Referring to Fig. 4, each hydraulic cylinder 3 is equipped with hydraulic cylinder push rod 31, every group of hydraulic cylinder push rod 31, drive beam push rod 15, moving grate drives beam 2 and connects successively, and the transmission of power point-blank between them, specifically in the present embodiment, with hydraulic cylinder push rod 31 and driving beam push rod 15, driving beam push rod 15 is connected beam 2 and connects with transmitting thrust with hinging manner with moving grate, the chain connection mode has guaranteed that the transmission of power is point-blank, the moving direction that drives like this beam push rod 15 is consistent with the moving direction of moving grate driving beam 2, and in alignment, be easy to like this sealing, and seal is not easy also to damage.Wherein, hydraulic cylinder 3 is installed on the fixed support 19, and hydraulic cylinder push rod 31 is fixed on the furnace wall 17 by seal 18.Be installed in the air compartment that seal 18 on the furnace wall 17 is mainly used to below the isolated fire grate and be communicated with outside atmosphere, prevent that the combustion air of high temperature from leaking outside.
In the present embodiment, magnetic valve group 13 comprises a 3-position 4-way solenoid directional control valve 10 and two four-way electromagnetic reversing valves 8, the advancing, retreat and stop of three Position Control fire grates of 3-position 4-way solenoid directional control valve 10, controller 16 respectively with 3-position 4-way solenoid directional control valve 10 with are connected a four-way electromagnetic reversing valve 8 and are connected, and realize motion control to fire grate by the control to these two solenoid directional control valves.The position signalling that position detecting switch 5 and 6 moves fire grate is delivered to the PLC cyclelog, and the PLC cyclelog is controlled 3-position 4-way solenoid directional control valve 10 and two four-way electromagnetic reversing valves 8 according to the program of setting action realizes the motion control to fire grate.
Advancing/fuel-displaced oil circuit of two hydraulic cylinders 3 of two four-way electromagnetic reversing valve 8 series connection, the driving beam 2 of the both sides that reset is got back to initial position, rear position.
Between hydraulic cylinder 3 and the magnetic valve group 13, be connected by oil line pipe 4 between magnetic valve group 13 inner each valve.In the present embodiment, asphalt channel 4 is hydraulic tube.
In the present embodiment, magnetic valve group 13 also comprises stop valve 12, choke valve 11, pressure-regulating valve 9 and pressure measuring tie-in 7, translational speed when wherein choke valve 11 is used for regulating the fire grate action, pressure-regulating valve 9 is used for regulating the stationarity of fire grate backward movement, stop valve 12 and choke valve 11 are arranged between magnetic valve group oil-in and the 3-position 4-way solenoid directional control valve 10, pressure-regulating valve 9 is arranged between 3-position 4-way solenoid directional control valve 10 and the hydraulic cylinder 3, pressure measuring tie-in 7 is arranged on the oil line pipe that is connected with hydraulic cylinder 3, specifically referring to Fig. 3.
Device of the present utility model configures hydraulic cylinder, position detecting switch, magnetic valve group, PLC controller in use at first as shown in Figure 3, and finishes pipeline connection and electrical connection.Hydraulic oil flows into from the P mouth of magnetic valve group 13 during work, and the T mouth flows out, and regulates the uninterrupted of oil-feed by choke valve 11, the translational speed of the translational speed of regulator solution cylinder pressure push rod and then adjustment moving grate.The pressure of return line when retreating by pressure-regulating valve 9 adjustment fire grates, make stable action when retreating, because the angle that fire grate moves is angle obliquely, when retreating because fire grate and above the deadweight of rubbish can make the hydraulic cylinder push rod be subject to the thrust under oblique.When fire grate stopped, 3-position 4-way solenoid directional control valve 10 mediated, and oil circuit is obstructed, and fire grate is failure to actuate; When 3-position 4-way solenoid directional control valve 10 is in right positions, the P of 3-position 4-way solenoid directional control valve 10, the A mouth is connected, T, the B mouth is connected, hydraulic oil passes through P, the A mouth, enter the back cavity of left side hydraulic cylinder through the bypass check valve of pressure-regulating valve 9, promoting left side hydraulic cylinder push rod advances, the hydraulic oil of the ante-chamber of this hydraulic cylinder flows out, T by 8 connections of two four-way electromagnetic reversing valves, the B mouth enters the back cavity of right side hydraulic cylinder, the push rod that also promotes simultaneously the right side hydraulic cylinder advances, the hydraulic oil of right side hydraulic cylinder ante-chamber is by the T of 3-position 4-way solenoid directional control valve 10, the B mouth flows out, and enters return line.When the anteposition position detecting switch 5 of fire grate detected fire grate and moves to front position, the PLC controller can move to the centre position according to the signal controlling 3-position 4-way solenoid directional control valve 10 that puts in place that detects, and fire grate halts when cutting off oil circuit.The PLC controller can be controlled 3-position 4-way solenoid directional control valve 10 and move to leftward position when fire grate retreats, the P of 3-position 4-way solenoid directional control valve 10, the B mouth is connected, T, the A mouth is connected, hydraulic oil passes through P, the B mouth, enter the ante-chamber of right side hydraulic cylinder through pipeline, promote left side hydraulic cylinder push rod rollback, the hydraulic oil of this hydraulic cylinder back cavity flows out, B by 8 connections of two four-way electromagnetic reversing valves, the T mouth enters the ante-chamber of left side hydraulic cylinder, the push rod that also promotes simultaneously the right side hydraulic cylinder retreats, the hydraulic oil of left side hydraulic cylinder back cavity passes through the A of 3-position 4-way solenoid directional control valve 10 again by pressure-regulating valve 9, the T mouth flows out, and enters return line.When the rear position of fire grate position detecting switch 6 detects fire grate and moves to back-end location, the PLC controller can be controlled first two four-way electromagnetic reversing valves 8 according to the signal that puts in place that detects and move to right positions, make the P of two four-way electromagnetic reversing valves 8, the B mouth is connected, T, the A mouth is connected, hydraulic oil can be through the T of two four-way electromagnetic reversing valves 8 like this, the A mouth flow to the ante-chamber of left side hydraulic cylinder, the hydraulic oil of right side hydraulic cylinder back cavity can be through the P of two four-way electromagnetic reversing valves 8, the hydraulic oil of B mouth and left side hydraulic cylinder back cavity enters return line together, make two fire grates can both return to the most initial back-end location, eliminate to bring in each course of action asynchronous, two four-way electromagnetic reversing valves 8 return leftward position in the right side 1 second left and right sides time of stop, control simultaneously 3-position 4-way solenoid directional control valve 10 and move to the centre position, fire grate stops when cutting off oil circuit.Then prepare the next actuation cycle of beginning.Each actuation cycle of fire grate is finished according to default program by the PLC cyclelog.
Above disclosed the utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this utility model yet and only is the described specific embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiment are chosen and specifically described to this specification, is in order to explain better principle of the present utility model and practical application, thereby the technical field technical staff can understand and utilize the utility model well under making.The utility model only is subjected to the restriction of claims and four corner and equivalent.
Claims (10)
1. the synchronous drive device of the stoker fired grate of a grate-type domestic waste incineration, be connected with the moving grate piece of domestic waste incineration, comprise the magnetic valve group, position detecting switch, controller, hydraulic cylinder and moving grate piece propulsive mechanism, described magnetic valve group is connected with position detecting switch with described controller and is connected, described controller is controlled described magnetic valve group by the signal that the detection position sense switch transmits, described hydraulic cylinder and described magnetic valve group be connected moving grate piece propulsive mechanism and be connected respectively, it is characterized in that, described moving grate piece propulsive mechanism arranges two groups, and is separately positioned on the both sides of described moving grate piece;
Described hydraulic cylinder arranges two, and the oil circuit of described two hydraulic cylinders adopts series system to connect;
Described each hydraulic cylinder is connected with one group of moving grate piece propulsive mechanism, and the transmission of power point-blank between described hydraulic cylinder and the moving grate piece propulsive mechanism.
2. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1, it is characterized in that, described moving grate piece comprises the moving grate crossbeam, described every group of moving grate piece propulsive mechanism comprises that interconnected moving grate drives beam and drives the beam push rod, and described moving grate drives beam and is connected with the moving grate crossbeam;
Described each hydraulic cylinder is equipped with the hydraulic cylinder push rod, described hydraulic cylinder push rod, drive the beam push rod, moving grate drives beam and connects successively, and described hydraulic cylinder push rod, drives transmission that beam push rod, moving grate drive power between the beam point-blank.
3. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 2 is characterized in that, described hydraulic cylinder push rod and driving beam push rod, described driving beam push rod and moving grate drive between the beam and all connect with hinging manner.
4. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1, it is characterized in that, described position detecting switch comprises position position detecting switch behind fire grate anteposition position detecting switch and the fire grate, detect respectively and arrange front position and the back-end location of fire grate, adjust the stroke of fire grate.
5. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 4, it is characterized in that, described magnetic valve group comprises a 3-position 4-way solenoid directional control valve and two four-way electromagnetic reversing valves, the advancing, retreat and stop of three Position Control fire grates of described 3-position 4-way solenoid directional control valve, described controller respectively with described 3-position 4-way solenoid directional control valve be connected two four-way electromagnetic reversing valves and be connected, and realize motion control to fire grate by the control to these two solenoid directional control valves.
6. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 5, it is characterized in that, advancing/fuel-displaced oil circuit of two hydraulic cylinders of described two four-way electromagnetic reversing valves series connection, the moving grate of the both sides that reset drives beam and gets back to initial back-end location.
7. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 5 is characterized in that, between described hydraulic cylinder and the magnetic valve group, be connected by oil line pipe between inner each valve of described magnetic valve group.
8. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 7, it is characterized in that, described magnetic valve group also comprises stop valve, choke valve, pressure-regulating valve and pressure measuring tie-in, described stop valve and choke valve are arranged between described magnetic valve group oil-in and the described 3-position 4-way solenoid directional control valve, described pressure-regulating valve is arranged between described 3-position 4-way solenoid directional control valve and the described hydraulic cylinder, and described pressure measuring tie-in is arranged on the oil line pipe that is connected with described hydraulic cylinder.
9. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1 is characterized in that, described hydraulic cylinder is hydraulic cylinder with double piston rods, and described two hydraulic cylinder with double piston rods specifications are identical; Described controller is PLC or DCS cyclelog.
10. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 2, it is characterized in that, also comprise furnace wall, seal and fixed support, described hydraulic cylinder is fixed on the furnace wall by fixed support, and the push rod of described hydraulic cylinder is connected with furnace wall by seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505672 CN202884934U (en) | 2012-09-29 | 2012-09-29 | Synchronous drive device for mechanical fire grate of fire grate type house garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505672 CN202884934U (en) | 2012-09-29 | 2012-09-29 | Synchronous drive device for mechanical fire grate of fire grate type house garbage incinerator |
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| Publication Number | Publication Date |
|---|---|
| CN202884934U true CN202884934U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505672 Expired - Lifetime CN202884934U (en) | 2012-09-29 | 2012-09-29 | Synchronous drive device for mechanical fire grate of fire grate type house garbage incinerator |
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| CN (1) | CN202884934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865581A (en) * | 2012-09-29 | 2013-01-09 | 吕庆忠 | Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator |
| CN103267295A (en) * | 2013-05-31 | 2013-08-28 | 上海绿晖环保科技有限公司 | Grate device used for urban domestic garbage incinerator |
| CN105626604A (en) * | 2014-11-05 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control circuit for extension ironing and inverted arching prevention of paver |
-
2012
- 2012-09-29 CN CN 201220505672 patent/CN202884934U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865581A (en) * | 2012-09-29 | 2013-01-09 | 吕庆忠 | Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator |
| CN102865581B (en) * | 2012-09-29 | 2015-06-24 | 吕庆忠 | Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator |
| CN103267295A (en) * | 2013-05-31 | 2013-08-28 | 上海绿晖环保科技有限公司 | Grate device used for urban domestic garbage incinerator |
| CN105626604A (en) * | 2014-11-05 | 2016-06-01 | 陕西中大机械集团有限责任公司 | Hydraulic control circuit for extension ironing and inverted arching prevention of paver |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20150624 |
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| RGAV | Abandon patent right to avoid regrant |