CN100398225C - Completely hydraulically driven breaking dredger - Google Patents
Completely hydraulically driven breaking dredger Download PDFInfo
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- CN100398225C CN100398225C CNB2006100311805A CN200610031180A CN100398225C CN 100398225 C CN100398225 C CN 100398225C CN B2006100311805 A CNB2006100311805 A CN B2006100311805A CN 200610031180 A CN200610031180 A CN 200610031180A CN 100398225 C CN100398225 C CN 100398225C
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- breaker roll
- hydraulic
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- transmission mechanism
- walking
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Abstract
The present invention discloses a travelling crushing, cutting and clearing machine driven in a complete hydraulic mode, which comprises crushing rollers, a transmission mechanism of the crushing rollers, a travelling transmission mechanism, a travelling device, a hydraulic control system, a machine frame and tracks, wherein the transmission mechanism of the crushing rollers and the travelling transmission mechanism are arranged on the machine frame; the travelling device comprises a front wheel and a back wheel; the crushing rollers are supported at both sides of the machine frame; a hydraulic control system fixed on the machine frame comprises the hydraulic control system of the crushing rollers and a travelling hydraulic control system; the travelling device is connected with the travelling hydraulic control system through the travelling transmission mechanism; the travelling transmission mechanism comprises a travelling hydraulic motor and a transmission shaft, wherein the travelling hydraulic motor is connected with the travelling device through the transmission shaft; the crushing rollers are connected with the hydraulic control system of the crushing rollers through the transmission mechanism of the crushing rollers; the transmission mechanism of the crushing rollers comprises two hydraulic motors of the crushing rollers respectively arranged at both ends of the crushing rollers; the hydraulic motors of the crushing rollers are connected with the crushing rollers through a shaft coupling. The present invention has the advantages of simple structure, low manufacturing cost of devices, low failure rate and large travelling force.
Description
Technical field
The present invention is mainly concerned with the clear equipment of dredging that coal grate under a kind of train coal tippler and automobile are subjected to grate on coal grate on the coalpit or other hoppers between unloading coal, and refers in particular to a kind of completely hydraulically driven breaking dredger.
Background technology
Measure in the big enterprise with coal (or other loose unpacked materials) in industries such as electric power, metallurgy, usually, transporting into by train or automobile, the coal of factory all will sieve for the first time through coal grate work.In the past, residued in foreign material on the coal grate such as a fat person's coal after the screening, gangue, straw rope, woven bag etc. are all by artificial treatment.Along with the development and progress of society, the labor cleaning under this adverse circumstances can not reach modern production requirement and usefulness and beat, and manual operations will be replaced by dynamical machinery equipment.So the clear machine of dredging of various types arises at the historic moment.
At present, being used to clear up coal grate under the train coal tippler and automobile is subjected between unloading coal the clear equipment of dredging of grate on coal grate on the coalpit or other hoppers that two characteristics are arranged: characteristics one, the type of drive of breaker roll and running gear (two wheel drive or four-wheel drive) is the mechanical type transmission, its each running position all will be finished by a series of parts such as motor, reductor, shaft couplings respectively, and adopts this kind of drive to cause that clear overall weight of dredging equipment is big, mechanism is complicated, cost is high, fault rate is high.Characteristics two: the power of advancing of equipment walking realizes by the force of rolling friction between steel wheel and the rail rail level.Because frictional force equals gravity * coefficient of friction (0.05), increase frictional force, have only by increasing equipment gravity and realize, and one ton of the every increase of conducting oneself with dignity, its frictional force only increases 500N.Therefore, the equipment power of advancing is restricted, and when equipment runs into slightly bigger resistance, very easily skids.The walking mechanism of domestic existing all similar devices is the rolling friction that relies between steel wheel (comprising two-wheel drive or four-wheel drive) and the rail and advances, so very easily skid, water is especially arranged on rail level, when earth or wet coal and running resistance are big slightly, just skid, at this moment, machine can only be parked on the coal grate, must not advance, must not move back, the tippler operation of can not normally unloading coal.In the domestic existing equipment manual setter is not set all, machine is skidding or parking and electrical equipment when being out of order, and machine can not be return machine room, influences discharge operation.
Summary of the invention
The technical problem to be solved in the present invention just is: at the deficiency that prior art exists, the invention provides a kind of simple in structure, equipment manufacturing cost is low, fault rate is low, the power of advancing is big completely hydraulically driven breaking dredger.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of completely hydraulically driven breaking dredger, it comprises breaker roll, breaker roll transmission mechanism, walking transmission mechanism, running gear, hydraulic control system, frame and track.Breaker roll transmission mechanism and walking transmission mechanism are arranged on the frame, breaker roll is supported in the both sides of frame, running gear comprises the bottom that is arranged at frame and is supported in front-wheel and trailing wheel on the track, it is characterized in that: described hydraulic control system is fixed on the frame, and it comprises breaker roll hydraulic control system and walking hydraulic control system.Running gear links to each other with the walking hydraulic control system by walking transmission mechanism, and described walking transmission mechanism comprises walking hydraulic motor and power transmission shaft, and the walking hydraulic motor links to each other with running gear by power transmission shaft; Breaker roll links to each other with the breaker roll hydraulic control system by the breaker roll transmission mechanism, and this breaker roll transmission mechanism comprises two breaker roll hydraulic motors that place the breaker roll two ends respectively, and the breaker roll hydraulic motor links to each other with breaker roll by shaft coupling.
Described breaker roll hydraulic control system comprises motor, hydraulic pump, fuel tank, overflow valve, filter, reversal valve, flow speed control valve and counterbalance valve; The axle head that advances of hydraulic pump links to each other with motor, the input port of hydraulic pump links to each other with fuel tank by filter, a delivery outlet of hydraulic pump links to each other with hydraulic motor with flow speed control valve by reversal valve successively, another delivery outlet of hydraulic pump links to each other with fuel tank by overflow valve, and the oil-out place of hydraulic motor is provided with counterbalance valve.
Described walking hydraulic control system comprises motor, hydraulic pump, overflow valve, filter, reversal valve, flow speed control valve and pressure switch.The axle head that advances of hydraulic pump links to each other with motor, and the input port of hydraulic pump links to each other with fuel tank by filter, and a delivery outlet of hydraulic pump links to each other with hydraulic motor with flow speed control valve by reversal valve successively, and another delivery outlet of hydraulic pump links to each other with fuel tank by overflow valve; Pressure switch is arranged between flow speed control valve and the reversal valve.
Described breaker roll comprises broken roller, connection seat, crushing head and cutting blade.Be connected with connection seat on the excircle of broken roller, crushing head is installed in a side of connection seat, and its head places the top of connection seat, and the revolution cutting blade is anchored on the connection seat opposite side, be provided with fixed blade in revolution cutting blade corresponding position, described fixed blade is installed in fixedly on the tool rest.
Described track comprises rail and bearing pin, and the rail middle part has the hole, is inserted with bearing pin in the hole, and a side of described trailing wheel is the light face, and another side is a pin gear, the pin gear of rear walking wheel end face and the engagement of track upper pin.
Compared with prior art, advantage of the present invention just is:
1, completely hydraulically driven breaking dredger of the present invention adopts the mode that full hydraulic drives, breaker roll transmission mechanism and walking transmission mechanism all adopt the hydraulic motor transmission, and link to each other with hydraulic control system, two cover hydraulic systems can be finished all the parts transmissions of this machine, therefore it is simple, compact to have device structure, characteristics in light weight, that equipment manufacturing cost is low;
2, the hydraulic motor of completely hydraulically driven breaking dredger of the present invention directly links to each other with rotating shaft, has reduced decelerator in the machine driving, shaft coupling, and parts such as brake, so equipment failure rate is low;
3, rear walking wheel one side of completely hydraulically driven breaking dredger of the present invention has the pin tooth, rail is provided with bearing pin, the pin tooth is stirred the bearing pin rotation during equipment walking, has increased the power of advancing greatly, has changed machine driving and has relied on the present situation that increases equipment self-weight and increase the power of advancing.Because bearing pin directly is installed in the track middle part, saved key seat again, reduced the wearing and tearing that cause to pin gear because of the long-pending coal of key seat, therefore walking is more steady, and maintenance load is littler, and service life of equipment is longer.
Description of drawings
Fig. 1 is the schematic top plan view of structure of the present invention;
Fig. 2 is the schematic side view of structure of the present invention;
Fig. 3 is the generalized section of middle orbit of the present invention;
Fig. 4 is the structural representation of breaker roll drive unit among the present invention;
Fig. 5 is the generalized section of trailing wheel in the running gear of the present invention;
Fig. 6 is the generalized section of breaker roll among the present invention;
Fig. 7 is the connection diagram of trailing wheel and track among the present invention;
Fig. 8 is a hydraulic control principle schematic among the present invention.
Marginal data
1, frame 2, breaker roll transmission mechanism 3, walking transmission mechanism
4, breaker roll 5, running gear 6, trailing wheel
7, track 8, hydraulic system 9, fixed blade
10, track clearing apparatus 11, front-wheel 12, fixing tool rest
21, breaker roll bearing block 22, breaker roll hydraulic motor 23, shaft coupling
32, preceding wheel shaft 33, bearing 34, bearing block
35, walking hydraulic motor 41, broken roller 42, crushing head
43, cutting blade 44, connection seat 71, bearing pin
72, rail 73, nut 81, breaker roll hydraulic control system
811, motor 812, overflow valve 813, reversal valve
814, flow speed control valve 815, counterbalance valve 816, filter
817, fuel tank 818, hydraulic pump 82, walking hydraulic control system
821, motor 822, hydraulic pump 823, filter
824, overflow valve 825 pressure switches 826, flow speed control valve
827, reversal valve
The specific embodiment
Below with reference to the drawings and specific embodiments the present invention is described in further details.
As depicted in figs. 1 and 2, completely hydraulically driven breaking dredger of the present invention, it comprises breaker roll 4, breaker roll transmission mechanism 2, walking transmission mechanism 3, running gear 5, hydraulic control system 8, frame 1 and track 7.Breaker roll transmission mechanism 2 and walking transmission mechanism 3 are arranged on the frame 1, and running gear 5 comprises the bottom that is arranged at frame 1 and be supported in front-wheel 11 and trailing wheel 6 on the track 7 that breaker roll 4 is supported in the both sides of frame 1.Hydraulic control system 8 is fixed on the frame 1, and it comprises breaker roll hydraulic control system 81 and walking hydraulic control system 82.Running gear 5 links to each other with walking hydraulic control system 82 by walking transmission mechanism 3, and walking transmission mechanism 3 comprises walking hydraulic motor 35 and power transmission shaft 32, and walking hydraulic motor 35 links to each other with running gear 5 by power transmission shaft 32; Breaker roll 4 links to each other with breaker roll hydraulic control system 81 by breaker roll transmission mechanism 2, this breaker roll transmission mechanism 2 comprises two breaker roll hydraulic motors 22 that place breaker roll 41 two ends respectively, and breaker roll hydraulic motor 22 links to each other with breaker roll 4 by shaft coupling 23.Track clearing apparatus 10 is fixed on the position at the place ahead of trailing wheel 11 or rear, and track 7 is fixed on operation aspect and the coal grate.
As shown in Figure 3, track 7 of the present invention is a fabricated structure, and it comprises rail 72 and bearing pin 71.Rail 72 middle parts have circular hole, and bearing pin 71 is housed in the hole, and bearing pin 71 is lived with shaft shoulder socket joint with rail 72 1 ends, and the other end is fixing with nut 73.The upper surface of rail 72 is the bearing-surface of front-wheel 11 and trailing wheel 6, and front-wheel 11 is the light face structure of two side ends belt wheel edge, front-wheel 11 walking of rolling on rail 72.As shown in Figure 7, trailing wheel 6 one sides of the present invention are the light face, and another side is a pin gear, and wheel face rolls on the face of track 7, pin gear on the trailing wheel 6 and bearing pin 71 engaged transmission that are fixed on track 7 middle parts, bearing pin 71 is made engaged transmission with the pin gear of rear walking wheel 6 end faces.
As shown in Figure 4, breaker roll transmission mechanism 2 of the present invention comprises two breaker roll hydraulic motors 22, these two breaker roll hydraulic motors 22 place breaker roll 41 two ends respectively, breaker roll hydraulic motor 22 links to each other with the axle head of broken roller 41 and links to each other with breaker roll bearing block 21 by screw by shaft coupling 23, broken 41 of rollers are to be fixed on the frame 1 by bearing block 21, can drive breaker roll 4 by two breaker roll hydraulic motors 22 and make rolling-operation.
As shown in Figure 5, walking transmission mechanism 3 of the present invention comprises walking hydraulic motor 35, bearing block 34, power transmission shaft 32 and bearing 33, and the hydraulic motor 35 of wherein walking links to each other with power transmission shaft 32 by spline, links to each other with bearing block 34 by screw again.Front-wheel 11 or trailing wheel 6 are connected with power transmission shaft 32 by flat key, and support with bearing 33 and bearing block 34 at power transmission shaft 32 two ends, and bearing block 34 usefulness bolted are in frame 1 bottom, and hydraulic motor 35 can drive front-wheel 11 or trailing wheel 6 is traveling on the track 7 by walking.In specific embodiment, the present invention can adopt the mode of front-wheel drive, rear wheel drive or four-wheel drive as required, promptly directly drives front-wheel 11 or trailing wheel 6 by walking hydraulic motor 35.
As shown in Figure 6, breaker roll 4 of the present invention comprises broken roller 41, connection seat 44, crushing head 42 and cutting blade 43.Be connected with connection seat 44 on the excircle of broken roller 41, crushing head 42 is installed in connection seat 44 1 sides by holding screw, its head places connection seat 44 tops, revolution cutting blade 43 is anchored on connection seat 44 opposite sides, be provided with fixed blade 9 in revolution cutting blade 43 corresponding positions, described fixed blade 9 is installed in fixedly on the tool rest 5 (referring to shown in Figure 1).
As shown in Figure 8, hydraulic control system 8 of the present invention, it comprises breaker roll hydraulic control system 81 and walking hydraulic control system 82.
This breaker roll hydraulic control system 81 comprises motor 811, hydraulic pump 818, fuel tank 817, overflow valve 812, filter 816, reversal valve 813, flow speed control valve 814 and counterbalance valve 815; The axle head that advances of hydraulic pump 818 links to each other with motor 811, the input port of hydraulic pump 818 links to each other with fuel tank 817 by filter 816, a delivery outlet of hydraulic pump 818 links to each other with hydraulic motor 22 with flow speed control valve 814 by reversal valve 813 successively, another delivery outlet of hydraulic pump 818 links to each other with fuel tank 817 by overflow valve 813, and the oil-out place of broken hydraulic motor 22 is provided with counterbalance valve 815.Motor 811 drives breaker roll hydraulic pump 818, make hydraulic oil one loop successively by fuel tank 817, filter 816, hydraulic pump 818, reversal valve 813 and flow speed control valve 814, drive hydraulic motor 22 backs and turn back to fuel tank 817 from reversal valve 813, this loop is used to control the rotating speed and the direction of rotation of breaker roll 4, for guaranteeing system's minimum operating pressure, be provided with counterbalance valve 815 at hydraulic motor 22 oil-outs.Another loop is got back to fuel tank 817 from hydraulic motor 22 outlets by overflow valve 813, and this loop is used to regulate the operating pressure of breaker roll 4, simultaneously system is played a protective role.
This walking hydraulic control system 82 comprises motor 821, hydraulic pump 822, overflow valve 824, filter 823, reversal valve 827, flow speed control valve 826 and pressure switch 825; The axle head that advances of hydraulic pump 822 links to each other with motor 821, the input port of hydraulic pump 822 links to each other with fuel tank 817 by filter 823, a delivery outlet of hydraulic pump 822 is successively by reversal valve 827 and the flow speed control valve 826 and the hydraulic motor that links to each other, and another delivery outlet of hydraulic pump 822 links to each other with fuel tank 817 by overflow valve 824; Pressure switch 825 is arranged between flow speed control valve 826 and the reversal valve 827.Motor 821 drives hydraulic pump 822 makes hydraulic oil one loop successively by fuel tank 817, filter 823, hydraulic pump 822, reversal valve 827, hydraulic motor 35 and flow speed control valve 826, get back to fuel tank 817 from reversal valve 827, between flow speed control valve 826 and reversal valve 827, be provided with pressure switch 825, this loop is used to control the rotating speed and the direction of running gear 5, when equipment walking is subjected to big resistance, pressure switch 825 actions, equipment is got back to original position.Another loop hydraulic oil is got back to fuel tank 817 from hydraulic pump 822 outlets through overflow valve 824, and when the system works hypertonia, overflow valve 824 is opened, and system is played a protective role.
Be described further as follows to operation principle of the present invention in conjunction with the accompanying drawings:
Completely hydraulically driven breaking dredger of the present invention, with the rear wheel drive is example, the walking hydraulic control system 82 control walking hydraulic motors 35 of hydraulic control system 8, further drive trailing wheel 11 and on the track 7 that is fixed on operation aspect and the coal grate, walk, thereby promotion equipment integral body moves ahead and retreats.Walking simultaneously, an end is made as pin gear on the trailing wheel 61, and bearing pin 71 then correspondingly is housed on the rail 72, and pin gear on the trailing wheel 6 and bearing pin 71 engaged transmission that are fixed on track 7 middle parts play and strengthened the equipment power of advancing, and reach the effect that the equipment of preventing skids.Breaker roll 4 among the present invention rotates under the driving of two breaker roll hydraulic motors 24, being fixed on crushing head 42 on the broken roller 41 and cutting blade 43 dashes rigid foreign material such as the coarse coal on the coal castor, gangues under powerful driving force and inertia force effect and knocks, pushes, revolution blade 43 and fixed blade 9 relativities, shear and tear adhering to flexible foreign material such as straw rope on the breaker roll 4, braid over braid, thereby these foreign material are fallen from the coal castor, reach the purpose of cleaning coal castor.
Claims (8)
1. completely hydraulically driven breaking dredger, it comprises breaker roll (4), breaker roll transmission mechanism (2), walking transmission mechanism (3), running gear (5), hydraulic control system (8), frame (1) and track (7); Breaker roll transmission mechanism (2) and walking transmission mechanism (3) are arranged on the frame (1), running gear (5) comprises the bottom that is arranged at frame (1) and is supported in front-wheel (11) and trailing wheel (6) on the track (7), breaker roll (4) is supported in the both sides of frame (1), it is characterized in that: described hydraulic control system (8) is fixed on the frame (1), and it comprises breaker roll hydraulic control system (81) and walking hydraulic control system (82); Running gear (5) links to each other with walking hydraulic control system (82) by walking transmission mechanism (3), described walking transmission mechanism (3) comprises walking hydraulic motor (35) and power transmission shaft (32), and walking hydraulic motor (35) links to each other with running gear (5) by power transmission shaft (32); Breaker roll (4) links to each other with breaker roll hydraulic control system (81) by breaker roll transmission mechanism (2), this breaker roll transmission mechanism (2) comprises two breaker roll hydraulic motors (22) that place broken roller (41) two ends respectively, and breaker roll hydraulic motor (22) links to each other with breaker roll (4) by shaft coupling (23).
2. completely hydraulically driven breaking dredger according to claim 1 is characterized in that: described breaker roll hydraulic control system (81) comprises motor (811), hydraulic pump (818), fuel tank (817), overflow valve (812), filter (816), reversal valve (813), flow speed control valve (814) and counterbalance valve (815); The axle head that advances of hydraulic pump (818) links to each other with motor (811), the input port of hydraulic pump (818) links to each other with fuel tank (817) by filter (816), a delivery outlet of hydraulic pump (818) links to each other with breaker roll hydraulic motor (22) with flow speed control valve (814) by reversal valve (813) successively, another delivery outlet of hydraulic pump (818) links to each other with fuel tank (817) by overflow valve (813), and the oil-out place of hydraulic motor (22) is provided with counterbalance valve (815).
3. completely hydraulically driven breaking dredger according to claim 1 and 2 is characterized in that: described walking hydraulic control system (82) comprises motor (821), hydraulic pump (822), overflow valve (824), filter (823), reversal valve (827), flow speed control valve (826) and pressure switch (825); The axle head that advances of hydraulic pump (822) links to each other with motor (821), the input port of hydraulic pump (822) links to each other with fuel tank (817) by filter (823), a delivery outlet of hydraulic pump (822) links to each other with hydraulic motor 35 with flow speed control valve (826) by reversal valve (827) successively, and another delivery outlet of hydraulic pump (822) links to each other with fuel tank (817) by overflow valve (824); Pressure switch (825) is arranged between flow speed control valve (826) and the reversal valve (827).
4. completely hydraulically driven breaking dredger according to claim 1 and 2 is characterized in that: described breaker roll (4) comprises broken roller (41), connection seat (44), crushing head (42) and cutting blade (43); Be connected with connection seat (44) on the excircle of broken roller (41), crushing head (42) is installed in a side of connection seat (44), its head places the top of connection seat (44), cutting blade (43) is anchored on connection seat (44) opposite side, be provided with fixed blade (9) in the corresponding position of cutting blade (43), described fixed blade (9) is installed in fixedly on the tool rest (12).
5. completely hydraulically driven breaking dredger according to claim 3 is characterized in that: described breaker roll (4) comprises broken roller (41), connection seat (44), crushing head (42) and cutting blade (43); Be connected with connection seat (44) on the excircle of broken roller (41), crushing head (42) is installed in a side of connection seat (44), its head places the top of connection seat (44), cutting blade (43) is anchored on connection seat (44) opposite side, be provided with fixed blade (9) going back to the corresponding position of cutting blade (43), described fixed blade (9) is installed in fixedly on the tool rest (12).
6. completely hydraulically driven breaking dredger according to claim 1 and 2 is characterized in that: described track (7) comprises rail (72) and bearing pin (71), and rail (72) middle part has the hole, is inserted with bearing pin (71) in the hole; One side of described trailing wheel (6) is the light face, and another side is a pin gear, the pin gear of rear walking wheel (6) end face and track (7) upper pin (71) engagement.
7. completely hydraulically driven breaking dredger according to claim 3 is characterized in that: described track (7) comprises rail (72) and bearing pin (71), and rail (72) middle part has the hole, is inserted with bearing pin (71) in the hole; One side of described trailing wheel (6) is the light face, and another side is a pin gear, the pin gear of rear walking wheel (6) end face and track (7) upper pin (71) engagement.
8. completely hydraulically driven breaking dredger according to claim 4 is characterized in that: described track (7) comprises rail (72) and bearing pin (71), and rail (72) middle part has the hole, is inserted with bearing pin (71) in the hole; One side of described trailing wheel (6) is the light face, and another side is a pin gear, the pin gear of rear walking wheel (6) end face and track (7) upper pin (71) engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100311805A CN100398225C (en) | 2006-01-23 | 2006-01-23 | Completely hydraulically driven breaking dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100311805A CN100398225C (en) | 2006-01-23 | 2006-01-23 | Completely hydraulically driven breaking dredger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1803317A CN1803317A (en) | 2006-07-19 |
| CN100398225C true CN100398225C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100311805A Expired - Fee Related CN100398225C (en) | 2006-01-23 | 2006-01-23 | Completely hydraulically driven breaking dredger |
Country Status (1)
| Country | Link |
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| CN (1) | CN100398225C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091694A (en) * | 2009-12-14 | 2011-06-15 | 淮南矿业(集团)有限责任公司 | Fixed screen waste rock removing device and fixed screen device |
| CN115739622B (en) * | 2022-11-29 | 2024-06-18 | 济南大学 | Cleaning device and method for residual coal of coal grate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754932A (en) * | 1987-03-18 | 1988-07-05 | Combustion Engineering, Inc. | Coal pulverizer inerting and fire extinguishing system |
| CN2604413Y (en) * | 2003-03-13 | 2004-02-25 | 中国矿业大学 | Pick type unloading vehicle machine |
| CN2714497Y (en) * | 2004-08-03 | 2005-08-03 | 长沙通发高新技术开发有限公司 | Traveling breaking, cutting, cleaning and scattering machine |
| CN2889984Y (en) * | 2006-01-24 | 2007-04-18 | 长沙通发高新技术开发有限公司 | Fully-hydraulic traveling-driven type breaking dredging-machine |
-
2006
- 2006-01-23 CN CNB2006100311805A patent/CN100398225C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754932A (en) * | 1987-03-18 | 1988-07-05 | Combustion Engineering, Inc. | Coal pulverizer inerting and fire extinguishing system |
| CN2604413Y (en) * | 2003-03-13 | 2004-02-25 | 中国矿业大学 | Pick type unloading vehicle machine |
| CN2714497Y (en) * | 2004-08-03 | 2005-08-03 | 长沙通发高新技术开发有限公司 | Traveling breaking, cutting, cleaning and scattering machine |
| CN2889984Y (en) * | 2006-01-24 | 2007-04-18 | 长沙通发高新技术开发有限公司 | Fully-hydraulic traveling-driven type breaking dredging-machine |
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| CN1803317A (en) | 2006-07-19 |
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Granted publication date: 20080702 Termination date: 20200123 |