CN212250657U - Redundant hydraulic system and engineering mechanical equipment - Google Patents
Redundant hydraulic system and engineering mechanical equipment Download PDFInfo
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- CN212250657U CN212250657U CN202020232267.4U CN202020232267U CN212250657U CN 212250657 U CN212250657 U CN 212250657U CN 202020232267 U CN202020232267 U CN 202020232267U CN 212250657 U CN212250657 U CN 212250657U
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Abstract
A redundant hydraulic system and engineering mechanical equipment are provided, wherein the redundant hydraulic system comprises: at least one dual cylinder drive mechanism; the double-cylinder driving mechanism comprises a main valve module, an oil way assembly connected with the main valve module, a redundancy control module connected with the oil way assembly and a driving assembly connected with the redundancy control module; the main valve module comprises a first main reversing valve and a second main reversing valve; the driving assembly comprises a first telescopic cylinder and a second telescopic cylinder; the redundancy control module can realize the communication between the first main reversing valve and the first telescopic cylinder or between the second main reversing valve and the second telescopic cylinder; the redundancy control module can also realize the communication between the first main reversing valve and the second telescopic cylinder or between the second main reversing valve and the first telescopic cylinder; therefore, when local faults occur, normal control over the first telescopic cylinder or the second telescopic cylinder can still be kept, and stable operation of engineering mechanical equipment is facilitated.
Description
Technical Field
The utility model relates to an engineering machine tool landing leg system technical field especially relates to a redundant hydraulic system and engineering machine tool equipment.
Background
In order to meet the requirements of highway transportation regulations, engineering mechanical equipment such as cranes and the like are generally provided with telescopic or swinging supporting legs on the premise of not increasing the width of the whole vehicle, so that the supporting span is increased, and the sufficient safety and stability in the working process are ensured. The telescoping or swinging legs are typically deployed and retracted using hydraulic rams. Specifically, the swing and vertical leg cylinders can be used to achieve the extension and retraction of the swing and vertical legs.
In order to facilitate the action control of each supporting leg, the engineering mechanical equipment generally comprises a supporting leg hydraulic system, the existing supporting leg hydraulic system cannot continuously operate when a local fault of a main reversing valve occurs, and when the engineering mechanical equipment fails in the operation process or is completely extended, the risk of maintaining the hydraulic system is quite large, so that the stable operation of the engineering mechanical equipment is not facilitated.
SUMMERY OF THE UTILITY MODEL
Therefore, a redundant hydraulic system and engineering mechanical equipment are needed to be provided for solving the problem that the hydraulic system cannot continue to operate when a local fault of a main reversing valve occurs.
A redundant hydraulic system comprising: at least one dual cylinder drive mechanism; the double-cylinder driving mechanism comprises a main valve module, an oil way assembly connected with the main valve module, a redundancy control module connected with the oil way assembly, and a driving assembly connected with the redundancy control module; the main valve module comprises a first main reversing valve and a second main reversing valve; the driving assembly comprises a first telescopic cylinder and a second telescopic cylinder; the redundant control module can realize the communication between the first main reversing valve and the first telescopic cylinder or between the second main reversing valve and the second telescopic cylinder; the redundancy control module can also realize the communication between the first main reversing valve and the second telescopic cylinder or between the second main reversing valve and the first telescopic cylinder.
According to the redundant hydraulic system, under the control of the redundant control module, when the first main reversing valve and the second main reversing valve are both normal, the first telescopic cylinder is controlled by the first main reversing valve to perform telescopic action, and the second telescopic cylinder is controlled by the second main reversing valve to perform telescopic action; when the first main reversing valve fails, the redundancy control module group realizes the communication between the second main reversing valve and the first telescopic cylinder, the second main reversing valve controls the action of the first telescopic cylinder, when the second main reversing valve fails, the redundancy control module group realizes the communication between the first main reversing valve and the second telescopic cylinder, and the second main reversing valve controls the action of the first telescopic cylinder, so that when local failure occurs, the normal control on the first telescopic cylinder or the second telescopic cylinder can be still maintained, and the stable operation of engineering mechanical equipment is facilitated.
In one embodiment, the oil passage assembly includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage; the redundancy control module comprises a first branch reversing valve, a second branch reversing valve, a third branch reversing valve and a fourth branch reversing valve; a first working oil port of the first main reversing valve is communicated with an oil inlet of the first branch reversing valve through the first oil way; a second working oil port of the first main reversing valve is communicated with an oil inlet of the second branch reversing valve through the second oil path; a third working oil port of the second main reversing valve is communicated with an oil inlet of the third branch reversing valve through the third oil path; a fourth working oil port of the second main reversing valve is communicated with an oil inlet of the fourth branch reversing valve through the fourth oil path; a first oil outlet of the first branch reversing valve is communicated to a rodless cavity of the first telescopic cylinder; a second oil outlet of the first branch reversing valve is communicated to a fifth oil outlet of the third branch reversing valve; a third oil outlet of the second branch reversing valve is communicated to a rod cavity of the first telescopic cylinder; a fourth oil outlet of the second branch reversing valve is communicated to a seventh oil outlet of the fourth branch reversing valve; a fifth oil outlet of the third branch reversing valve is communicated to a rodless cavity of the second telescopic cylinder; a sixth oil outlet of the third branch reversing valve is communicated to a first oil outlet of the first branch reversing valve; a seventh oil outlet of the fourth branch reversing valve is communicated to a rod cavity of the second telescopic cylinder; and an eighth oil outlet of the fourth branch reversing valve is communicated to a third oil outlet of the second branch reversing valve.
In one embodiment, the first and second main directional valves are three-position, four-way valves; the first branch directional control valve, the second branch directional control valve, the third branch directional control valve and the fourth branch directional control valve are two-position four-way valves.
In one embodiment, an integrated design is used; thereby improving compactness.
In one embodiment, the double-cylinder driving mechanism further comprises a power mechanism connected with the double-cylinder driving mechanism; the power mechanism comprises an oil pump, an oil inlet oil way and an oil return oil way, wherein the oil inlet oil way is connected with an output port of the oil pump; the oil inlet of the first main reversing valve and the oil inlet of the second main reversing valve are connected with the output end of the oil inlet oil path; the oil return port of the first main reversing valve and the oil return port of the second main reversing valve are connected with the input end of the oil return way; thereby providing hydraulic drive to each two-cylinder drive mechanism.
In one embodiment, the drive assembly further comprises a first counterbalance valve connected between the first oil outlet and the rodless chamber of the first telescoping cylinder; the drive assembly further comprises a second counterbalance valve connected between the fifth oil outlet and the rodless chamber of the second telescoping cylinder; so that the hydraulic pressure is properly distributed between the first telescopic cylinder and the second telescopic cylinder.
In one embodiment, the power mechanism further comprises an oil tank; an input port of the oil pump extends into the oil tank through a pipeline; the output end of the oil return oil way extends into the oil tank; thereby providing continuous hydraulic drive to each dual cylinder drive mechanism.
In one embodiment, the power mechanism further comprises an overflow valve arranged between the oil inlet path and the oil return path; thereby avoiding the double-cylinder driving mechanism from being influenced by overlarge oil pressure.
An engineering mechanical device comprises a redundant hydraulic system, a carrying main body, a front supporting leg mechanism connected with the carrying main body, and a rear supporting leg mechanism connected with the carrying main body; the front supporting leg mechanisms are arranged in pairs; the front supporting leg mechanism comprises a first horizontal component connected with the carrying main body, a first vertical component connected with the first horizontal component, and a front supporting leg connected with the first vertical component; the rear supporting leg mechanisms are arranged in pairs; the rear leg mechanism comprises a second horizontal assembly connected with the carrying main body, a second vertical assembly connected with the second horizontal assembly, and a rear supporting foot connected with the second vertical assembly; in the redundant hydraulic system, the number of the double-cylinder driving mechanisms is four, and the first double-cylinder driving mechanism, the second double-cylinder driving mechanism, the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism are sequentially arranged; the first double-cylinder driving mechanism and the second double-cylinder driving mechanism respectively control the two front supporting leg mechanisms; the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism respectively control the two rear supporting leg mechanisms.
An engineering mechanical device comprises a redundant hydraulic system, a carrying main body, a front supporting leg mechanism connected with the carrying main body, and a rear supporting leg mechanism connected with the carrying main body; the front supporting leg mechanisms are arranged in pairs; the front supporting leg mechanism comprises a first horizontal component connected with the carrying main body, a first vertical component connected with the first horizontal component, and a front supporting leg connected with the first vertical component; the rear supporting leg mechanisms are arranged in pairs; the rear leg mechanism comprises a second horizontal assembly connected with the carrying main body, a second vertical assembly connected with the second horizontal assembly, and a rear supporting foot connected with the second vertical assembly; in the redundant hydraulic system, the number of the double-cylinder driving mechanisms is four, and the first double-cylinder driving mechanism, the second double-cylinder driving mechanism, the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism are sequentially arranged; the first telescopic cylinder and the second telescopic cylinder of the first double-cylinder driving mechanism and the second double-cylinder driving mechanism respectively control the first horizontal assemblies of the two front leg supporting mechanisms and the second horizontal assemblies of the two rear leg supporting mechanisms; the first telescopic cylinder and the second telescopic cylinder of the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism respectively control the first vertical assembly of the front supporting leg mechanism and the second vertical assembly of the rear supporting leg mechanism.
Drawings
Fig. 1 is a schematic structural diagram of a redundant hydraulic system according to an embodiment of the present invention;
FIG. 2 is a connection diagram of a dual cylinder drive mechanism and a power mechanism of FIG. 1;
fig. 3 is a schematic mechanism diagram of a construction machine according to a first embodiment of the present invention;
fig. 4 is a schematic mechanism diagram of a construction machine according to a second embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 4, a redundant hydraulic system 10 according to an embodiment of the present invention is used for driving the operation of the leg mechanism of the engineering mechanical equipment 80. The redundant hydraulic system 10 includes at least one dual cylinder drive mechanism 20; the double-cylinder driving mechanism 20 comprises a main valve module 40, an oil way component connected with the main valve module 40, a redundancy control module 60 connected with the oil way component, and a driving component connected with the redundancy control module 60; the main valve module 40 includes a first main directional control valve 41 and a second main directional control valve 42; the driving assembly comprises a first telescopic cylinder 71 and a second telescopic cylinder 72; the redundant control module 60 can realize the communication between the first main directional control valve 41 and the first telescopic cylinder 71 or between the second main directional control valve 42 and the second telescopic cylinder 72; the redundant control module 60 may also enable communication between the first main directional control valve 41 and the second telescoping cylinder 72, or the second main directional control valve 42 and the first telescoping cylinder 71.
Under the control of the redundant control module 60, when the first main directional control valve 41 and the second main directional control valve 42 are both normal, the first telescopic cylinder 71 is controlled by the first main directional control valve 41 to perform telescopic action, and the second telescopic cylinder 72 is controlled by the second main directional control valve 42 to perform telescopic action; when the first main directional control valve 41 fails, the redundant control module 60 realizes communication between the second main directional control valve 42 and the first telescopic cylinder 71, the second main directional control valve 42 controls the action of the first telescopic cylinder 71, and when the second main directional control valve 42 fails, the redundant control module 60 realizes communication between the first main directional control valve 41 and the second telescopic cylinder 72, and the second main directional control valve 42 controls the action of the first telescopic cylinder 71, so that when a local failure occurs, normal control over the first telescopic cylinder 71 or the second telescopic cylinder 72 can still be maintained, and stable operation of the engineering mechanical equipment 80 is facilitated.
Referring to fig. 2, in one embodiment, the oil passage assembly includes a first oil passage 51, a second oil passage 52, a third oil passage 53, and a fourth oil passage 54; the redundancy control module 60 includes a first branch directional control valve 61, a second branch directional control valve 62, a third branch directional control valve 63, and a fourth branch directional control valve 64; a first working oil port of the first main directional control valve 41 is communicated with an oil inlet of the first branch directional control valve 61 through a first oil path 51; a second working oil port of the first main directional control valve 41 is communicated with an oil inlet of the second branch directional control valve 62 through a second oil path 52; a third working oil port of the second main directional control valve 42 is communicated with an oil inlet of the third branch directional control valve 63 through a third oil path 53; a fourth working oil port of the second main directional control valve 42 is communicated with an oil inlet of the fourth branch directional control valve 64 through a fourth oil path 54; a first oil outlet of the first branch directional control valve 61 is communicated to a rodless cavity of the first telescopic cylinder 71; a second oil outlet of the first branch directional control valve 61 is communicated to a fifth oil outlet of the third branch directional control valve 63; a third oil outlet of the second branch reversing valve 62 is communicated to a rod cavity of the first telescopic cylinder 71; the fourth oil outlet of the second branch directional control valve 62 is communicated to the seventh oil outlet of the fourth branch directional control valve 64; a fifth oil outlet of the third branch reversing valve 63 is communicated to a rodless cavity of the second telescopic cylinder 72; a sixth oil outlet of the third branch directional control valve 63 is communicated to a first oil outlet of the first branch directional control valve 61; a seventh oil outlet of the fourth branch directional control valve 64 is communicated to a rod cavity of the second telescopic cylinder 72; the eighth oil outlet of the fourth branch directional control valve 64 is communicated to the third oil outlet of the second branch directional control valve 62.
In one embodiment, first main directional control valve 41 and second main directional control valve 42 are three-position, four-way valves; the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63, and the fourth branch directional control valve 64 are two-position four-way valves; the first main directional control valve 41 or the second main directional control valve 42 has three working states, taking the first main directional control valve 41 as an example, in the first working state, an oil inlet of the first main directional control valve 41 is communicated with the first working oil port, and an oil return port of the first main directional control valve 41 is communicated with the second working oil port; in a second working state, the oil inlet of the first main reversing valve 41 is communicated with the second working oil port, and the oil return port of the first main reversing valve 41 is communicated with the first working oil port; in the third working state, the oil inlet, the oil return port, the first working oil port and the second working oil port of the first main reversing valve 41 are all cut off, i.e., the middle position machine can be in an O shape; the operating state of the second main directional control valve 42 corresponds to the operating state of the first main directional control valve 41.
The first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63, or the fourth branch directional control valve 64 have two operating states, respectively; when the first branch directional control valve 61 is in a first working state, an oil inlet of the first branch directional control valve 61 is communicated with a first oil outlet; when the first branch directional control valve 61 is in the second working state, the oil inlet of the first branch directional control valve 61 is communicated with the second oil outlet; the second branch directional control valve 62 is in a first working state, and an oil inlet of the second branch directional control valve 62 is communicated with a third oil outlet; the second branch directional control valve 62 is in a second working state, and an oil inlet of the second branch directional control valve 62 is communicated with a fourth oil outlet; the third branch directional control valve 63 is in the first working state, and an oil inlet of the third branch directional control valve 63 is communicated with a fifth oil outlet; the third branch directional control valve 63 is in a second working state, and an oil inlet of the third branch directional control valve 63 is communicated with a sixth oil outlet; the fourth branch directional control valve 64 is in the first working state, and an oil inlet of the fourth branch directional control valve 64 is communicated with a seventh oil outlet; the fourth branch directional control valve 64 is in the second working state, and the oil inlet of the fourth branch directional control valve 64 is communicated with the eighth oil outlet; specifically, the oil return port of the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63, or the fourth branch directional control valve 64 is subjected to a blocking process.
In one embodiment, the redundant hydraulic system 10 is of an integrated design; thereby improving compactness.
Referring to FIG. 2, in one embodiment, the redundant hydraulic system 10 further includes a power mechanism 30 coupled to the two-cylinder drive mechanism 20; the power mechanism 30 comprises an oil pump 31, an oil inlet path 32 connected with an output port of the oil pump 31, and an oil return path 33; an oil inlet of the first main directional control valve 41 and an oil inlet of the second main directional control valve 42 are connected with the output end of the oil inlet path 32; the oil return port of the first main directional control valve 41 and the oil return port of the second main directional control valve 42 are connected to the input end of the oil return path 33; the oil pump 31 pumps hydraulic oil to each of the two-cylinder drive mechanisms 20 through the oil inlet passage 32, and the hydraulic oil flowing out of each of the two-cylinder drive mechanisms 20 is recovered by the oil return passage 33, so that hydraulic drive can be provided to each of the two-cylinder drive mechanisms 20.
In one of the embodiments, the drive assembly further comprises a first balancing valve 73 connected between the first oil outlet and the rodless chamber of the first telescoping cylinder 71; the drive assembly further comprises a second balancing valve 74 connected between the fifth oil outlet and the rodless chamber of the second telescopic cylinder 72. When the first main directional control valve 41 drives the first telescopic cylinder 71 through the first branch directional control valve 61 and the second branch directional control valve 62, and the second main directional control valve 42 drives the second telescopic cylinder 72 through the third branch directional control valve 63 and the fourth branch directional control valve 64, the first balance valve 73 and the second balance valve 74 can adjust the hydraulic pressure difference between the first telescopic cylinder 71 and the second telescopic cylinder 72, and the hydraulic pressure can be appropriately distributed between the first telescopic cylinder 71 and the second telescopic cylinder 72.
In one embodiment, the power mechanism 30 further includes a fuel tank 34; an input port of the oil pump 31 extends into the oil tank 34 through a pipe; the output end of the oil return path 33 extends into the oil tank 34; thereby providing continuous hydraulic drive to each of the two-cylinder drive mechanisms 20.
In one embodiment, the power mechanism 30 further includes a relief valve 35 disposed between the oil inlet path 32 and the oil return path 33. Through the adjusting function of the overflow valve 35, the influence of the excessive oil pressure on the double-cylinder driving mechanism 20 is avoided, and the double-cylinder driving mechanism 20 is protected.
In the application of the redundant hydraulic system 10, if the first main directional control valve 41 and the second main directional control valve 42 both operate normally, when the first telescopic cylinder 71 needs to be extended, the first main directional control valve 41 is switched to a first working state, the first branch directional control valve 61 and the second branch directional control valve 62 are switched to the first working state, hydraulic oil sequentially passes through the oil inlet passage 32, the first working oil port of the first main directional control valve 41, the first oil passage 51, and the first oil outlet of the first branch directional control valve 61 to enter the rodless cavity of the first telescopic cylinder 71, and hydraulic oil in the rod cavity of the first telescopic cylinder 71 sequentially passes through the third oil port of the second branch directional control valve 62, the second oil passage 52, the second working oil port of the first main directional control valve 41, and the oil return passage 33 to the oil tank 34.
When the first telescopic cylinder 71 needs to be contracted, the first main directional control valve 41 is switched to the second working state, the first branch directional control valve 61 and the second branch directional control valve 62 are switched to the first working state, hydraulic oil sequentially passes through the oil inlet oil path 32, the second working oil port of the first main directional control valve 41, the second oil path 52 and the third oil outlet of the second branch directional control valve 62 and enters the rod chamber of the first telescopic cylinder 71, and hydraulic oil in the rodless chamber of the first telescopic cylinder 71 sequentially passes through the first oil outlet of the first branch directional control valve 61, the first oil path 51, the first working oil port of the first main directional control valve 41 and the oil return path 33 and returns to the oil tank 34.
When both the first main directional control valve 41 and the second main directional control valve 42 are normally operated, the second telescopic cylinder 72 is controlled in a manner corresponding to the first telescopic cylinder 71, and the operation direction thereof is controlled by the second main directional control valve 42.
When the first main directional control valve 41 fails, if the first telescopic cylinder 71 needs to be controlled to extend, the second main directional control valve 42 is switched to the first working state, the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63 and the fourth branch directional control valve 64 are switched to the second working state, hydraulic oil sequentially passes through the oil inlet passage 32, the third working oil port of the second main directional control valve 42, the third oil passage 53 and the sixth oil outlet of the third branch directional control valve 63 and enters the rodless cavity of the first telescopic cylinder 71, and hydraulic oil in the rod cavity of the first telescopic cylinder 71 sequentially passes through the eighth oil outlet of the fourth branch directional control valve 64, the fourth oil passage 54, the fourth working oil port of the second main directional control valve 42 and the oil return passage 33 and returns to the oil port 34.
When the first main directional control valve 41 fails, if the first telescopic cylinder 71 needs to be controlled to contract, the second main directional control valve 42 is switched to the second working state, the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63 and the fourth branch directional control valve 64 are switched to the second working state, hydraulic oil sequentially passes through the oil inlet passage 32, the fourth working oil port of the second main directional control valve 42, the fourth oil passage 54 and the eighth oil outlet of the fourth branch directional control valve 64 and enters the rod chamber of the first telescopic cylinder 71, and hydraulic oil in the rodless chamber of the first telescopic cylinder 71 sequentially passes through the sixth oil outlet of the third branch directional control valve 63, the third oil passage 53, the third working oil port of the second main directional control valve 42 and the oil return passage 33 and returns to the oil tank 34.
When the second main directional control valve 42 fails, if it is necessary to control the second telescopic cylinder 72 to extend, the first main directional control valve 41 is switched to the first working state, the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63, and the fourth branch directional control valve 64 are switched to the second working state, hydraulic oil sequentially passes through the oil inlet passage 32, the first working oil port of the first main directional control valve 41, the first oil passage 51, and the second oil port of the first branch directional control valve 61 and enters the rodless chamber of the second telescopic cylinder 72, and hydraulic oil in the rod chamber of the second telescopic cylinder 72 sequentially passes through the fourth oil port of the second branch directional control valve 62, the second oil passage 52, the second working oil port of the first main directional control valve 41, and the oil return passage 33 and returns to the oil tank 34.
When the second main directional control valve 42 fails, if the second telescopic cylinder 72 needs to be controlled to contract, the first main directional control valve 41 is switched to the second working state, the first branch directional control valve 61, the second branch directional control valve 62, the third branch directional control valve 63 and the fourth branch directional control valve 64 are switched to the second working state, hydraulic oil sequentially passes through the oil inlet passage 32, the second working oil port of the first main directional control valve 41, the second oil passage 52 and the fourth oil port of the second branch directional control valve 62 and enters the rod chamber of the second telescopic cylinder 72, and hydraulic oil in the rod-free chamber of the second telescopic cylinder 72 sequentially passes through the first oil port of the first branch directional control valve 61, the first oil passage 51, the first working oil port of the first main directional control valve 41 and the oil return passage 33 and returns to the oil tank 34.
Referring to fig. 3 and 4, the present invention further provides an engineering mechanical apparatus 80, which includes a redundant hydraulic system 10, a carrying main body 82, a front leg mechanism 83 connected to the carrying main body 82, and a rear leg mechanism 84 connected to the carrying main body 82; the front leg mechanisms 83 are provided in pairs; the front leg mechanism 83 includes a first horizontal member 831 connected to the carrier body 82, a first vertical member 832 connected to the first horizontal member 831, and a front supporting leg connected to the first vertical member 832; the rear leg mechanisms 84 are arranged in pairs; the rear leg mechanism 84 includes a second horizontal member 841 coupled to the carrier body 82, a second vertical member 842 coupled to the second horizontal member 841, and a rear support foot coupled to the second vertical member 842; in the redundant hydraulic system 10, the number of the two-cylinder driving mechanisms 20 is four, and the two-cylinder driving mechanisms are a first two-cylinder driving mechanism, a second two-cylinder driving mechanism, a third two-cylinder driving mechanism and a fourth two-cylinder driving mechanism in sequence; the first double-cylinder driving mechanism and the second double-cylinder driving mechanism respectively control the two front leg supporting mechanisms 83; the third and fourth dual-cylinder drive mechanisms control the two rear leg mechanisms 84, respectively.
Specifically, the first horizontal component 831 drives the first vertical component 832 to horizontally swing or horizontally move relative to the carrying body 82, and the second horizontal component 841 drives the second vertical component 842 to horizontally swing or horizontally move relative to the carrying body 82; the first vertical component 832 drives the front supporting leg to move up and down, and the second vertical component 842 drives the rear supporting leg to move up and down; the first telescopic cylinder 71 in the first double-cylinder driving mechanism is used for driving the first horizontal assembly 831 of the front supporting leg mechanism 83 to extend or swing, and the second telescopic cylinder 72 in the first double-cylinder driving mechanism 20 is used for driving the first vertical assembly 832 of the front supporting leg mechanism 83 to vertically extend or retract; the first telescopic cylinder 71 in the second double-cylinder driving mechanism is used for driving the first horizontal assembly 831 of the other front supporting leg mechanism 83 to extend or swing, and the second telescopic cylinder 72 in the second double-cylinder driving mechanism 20 is used for driving the first vertical assembly 832 of the other front supporting leg mechanism 83 to extend or retract vertically; in the present embodiment, the third and fourth dual cylinder drive mechanisms operate in a manner corresponding to the first and second dual cylinder drive mechanisms.
The utility model discloses still provide the engineering machine tool equipment under the second embodiment, its difference with the engineering machine tool equipment 80 of first embodiment lies in: the first horizontal component of one front supporting leg mechanism and the first horizontal component of the other front supporting leg mechanism are respectively controlled by a first telescopic cylinder and a second telescopic cylinder of a first double-cylinder driving mechanism; the first vertical component of one front supporting leg mechanism and the first vertical component of the other front supporting leg mechanism are respectively controlled by a first telescopic cylinder and a second telescopic cylinder of a second double-cylinder driving mechanism; the first horizontal component of one rear supporting leg mechanism and the first horizontal component of the other rear supporting leg mechanism are respectively controlled by a first telescopic cylinder and a second telescopic cylinder of a third double-cylinder driving mechanism; the first vertical component of one rear supporting leg mechanism and the first vertical component of the other rear supporting leg mechanism are respectively controlled by the first telescopic cylinder and the second telescopic cylinder of the fourth double-cylinder driving mechanism.
In this embodiment, under the control of the redundant control module, when both the first main directional control valve and the second main directional control valve are normal, the first telescopic cylinder is controlled by the first main directional control valve to perform telescopic motion, and the second telescopic cylinder is controlled by the second main directional control valve to perform telescopic motion; when the first main reversing valve fails, the redundancy control module group realizes the communication between the second main reversing valve and the first telescopic cylinder, the second main reversing valve controls the action of the first telescopic cylinder, when the second main reversing valve fails, the redundancy control module group realizes the communication between the first main reversing valve and the second telescopic cylinder, and the second main reversing valve controls the action of the first telescopic cylinder, so that when local failure occurs, the normal control on the first telescopic cylinder or the second telescopic cylinder can be still maintained, and the stable operation of engineering mechanical equipment is facilitated.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A redundant hydraulic system, comprising: at least one dual cylinder drive mechanism; the double-cylinder driving mechanism comprises a main valve module, an oil way assembly connected with the main valve module, a redundancy control module connected with the oil way assembly, and a driving assembly connected with the redundancy control module; the main valve module comprises a first main reversing valve and a second main reversing valve; the driving assembly comprises a first telescopic cylinder and a second telescopic cylinder; the redundant control module can realize the communication between the first main reversing valve and the first telescopic cylinder or between the second main reversing valve and the second telescopic cylinder; the redundancy control module can also realize the communication between the first main reversing valve and the second telescopic cylinder or between the second main reversing valve and the first telescopic cylinder.
2. The redundant hydraulic system of claim 1, wherein the oil passage assembly includes a first oil passage, a second oil passage, a third oil passage, and a fourth oil passage; the redundancy control module comprises a first branch reversing valve, a second branch reversing valve, a third branch reversing valve and a fourth branch reversing valve; a first working oil port of the first main reversing valve is communicated with an oil inlet of the first branch reversing valve through the first oil way; a second working oil port of the first main reversing valve is communicated with an oil inlet of the second branch reversing valve through the second oil path; a third working oil port of the second main reversing valve is communicated with an oil inlet of the third branch reversing valve through the third oil path; a fourth working oil port of the second main reversing valve is communicated with an oil inlet of the fourth branch reversing valve through the fourth oil path; a first oil outlet of the first branch reversing valve is communicated to a rodless cavity of the first telescopic cylinder; a second oil outlet of the first branch reversing valve is communicated to a fifth oil outlet of the third branch reversing valve; a third oil outlet of the second branch reversing valve is communicated to a rod cavity of the first telescopic cylinder; a fourth oil outlet of the second branch reversing valve is communicated to a seventh oil outlet of the fourth branch reversing valve; a fifth oil outlet of the third branch reversing valve is communicated to a rodless cavity of the second telescopic cylinder; a sixth oil outlet of the third branch reversing valve is communicated to a first oil outlet of the first branch reversing valve; a seventh oil outlet of the fourth branch reversing valve is communicated to a rod cavity of the second telescopic cylinder; and an eighth oil outlet of the fourth branch reversing valve is communicated to a third oil outlet of the second branch reversing valve.
3. The redundant hydraulic system of claim 2, wherein the first main directional control valve and the second main directional control valve are three-position, four-way valves; the first branch directional control valve, the second branch directional control valve, the third branch directional control valve and the fourth branch directional control valve are two-position four-way valves.
4. Redundant hydraulic system according to claim 2, characterized in that an integrated design is used.
5. The redundant hydraulic system of claim 2, further comprising a power mechanism coupled to the dual cylinder drive mechanism; the power mechanism comprises an oil pump, an oil inlet oil way and an oil return oil way, wherein the oil inlet oil way is connected with an output port of the oil pump; the oil inlet of the first main reversing valve and the oil inlet of the second main reversing valve are connected with the output end of the oil inlet oil path; and the oil return port of the first main reversing valve and the oil return port of the second main reversing valve are connected with the input end of the oil return way.
6. The redundant hydraulic system of claim 5, wherein the drive assembly further comprises a first counterbalance valve connected between the first oil outlet and the rodless chamber of the first telescoping cylinder; the drive assembly further comprises a second counterbalance valve connected between the fifth oil outlet and the rodless chamber of the second telescoping cylinder.
7. The redundant hydraulic system of claim 6, wherein the power mechanism further comprises a fuel tank; an input port of the oil pump extends into the oil tank through a pipeline; and the output end of the oil return oil way extends into the oil tank.
8. The redundant hydraulic system of claim 6, wherein the power mechanism further comprises an overflow valve disposed between the oil inlet path and the oil return path.
9. A work machine apparatus comprising the redundant hydraulic system of any one of claims 1 to 8, a carrier body, a front leg mechanism connecting the carrier body, and a rear leg mechanism connecting the carrier body; the front supporting leg mechanisms are arranged in pairs; the front supporting leg mechanism comprises a first horizontal component connected with the carrying main body, a first vertical component connected with the first horizontal component, and a front supporting leg connected with the first vertical component; the rear supporting leg mechanisms are arranged in pairs; the rear leg mechanism comprises a second horizontal assembly connected with the carrying main body, a second vertical assembly connected with the second horizontal assembly, and a rear supporting foot connected with the second vertical assembly; in the redundant hydraulic system, the number of the double-cylinder driving mechanisms is four, and the first double-cylinder driving mechanism, the second double-cylinder driving mechanism, the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism are sequentially arranged; the first double-cylinder driving mechanism and the second double-cylinder driving mechanism respectively control the two front supporting leg mechanisms; the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism respectively control the two rear supporting leg mechanisms.
10. A work machine apparatus comprising the redundant hydraulic system of any one of claims 1 to 8, a carrier body, a front leg mechanism connecting the carrier body, and a rear leg mechanism connecting the carrier body; the front supporting leg mechanisms are arranged in pairs; the front supporting leg mechanism comprises a first horizontal component connected with the carrying main body, a first vertical component connected with the first horizontal component, and a front supporting leg connected with the first vertical component; the rear supporting leg mechanisms are arranged in pairs; the rear leg mechanism comprises a second horizontal assembly connected with the carrying main body, a second vertical assembly connected with the second horizontal assembly, and a rear supporting foot connected with the second vertical assembly; in the redundant hydraulic system, the number of the double-cylinder driving mechanisms is four, and the first double-cylinder driving mechanism, the second double-cylinder driving mechanism, the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism are sequentially arranged; the first telescopic cylinder and the second telescopic cylinder of the first double-cylinder driving mechanism and the second double-cylinder driving mechanism respectively control the first horizontal assemblies of the two front leg supporting mechanisms and the second horizontal assemblies of the two rear leg supporting mechanisms; the first telescopic cylinder and the second telescopic cylinder of the third double-cylinder driving mechanism and the fourth double-cylinder driving mechanism respectively control the first vertical assembly of the front supporting leg mechanism and the second vertical assembly of the rear supporting leg mechanism.
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| CN202020232267.4U CN212250657U (en) | 2020-02-28 | 2020-02-28 | Redundant hydraulic system and engineering mechanical equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811513A (en) * | 2021-01-16 | 2021-05-18 | 张洋保 | Sewage treatment tank |
| CN113530900A (en) * | 2021-07-22 | 2021-10-22 | 中广核研究院有限公司 | Robot hydraulic control system and robot apparatus |
-
2020
- 2020-02-28 CN CN202020232267.4U patent/CN212250657U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811513A (en) * | 2021-01-16 | 2021-05-18 | 张洋保 | Sewage treatment tank |
| CN113530900A (en) * | 2021-07-22 | 2021-10-22 | 中广核研究院有限公司 | Robot hydraulic control system and robot apparatus |
| CN113530900B (en) * | 2021-07-22 | 2023-08-18 | 中广核研究院有限公司 | Robot hydraulic control system and robot device |
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