CN202829410U - Rope-releasing hydraulic control system, rope-receiving hydraulic control system and crane - Google Patents
Rope-releasing hydraulic control system, rope-receiving hydraulic control system and crane Download PDFInfo
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- CN202829410U CN202829410U CN 201220045636 CN201220045636U CN202829410U CN 202829410 U CN202829410 U CN 202829410U CN 201220045636 CN201220045636 CN 201220045636 CN 201220045636 U CN201220045636 U CN 201220045636U CN 202829410 U CN202829410 U CN 202829410U
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Abstract
The utility model discloses a rope-releasing hydraulic control system, a rope-receiving hydraulic control system and a crane, comprising an oil pump, a first reversing valve, a second reversing valve, a first motor, a second motor and a control unit. The oil pump is connected to a system oil source, the first reversing valve and the second reversing valve at the same time. The first reversing valve and the second reversing valve are respectively connected to the first motor and the second motor. The rope-releasing hydraulic control system also comprises a rope-releasing unit having a first balance valve set and a second balance valve set. The rope-receiving hydraulic control system also comprises a rope-receiving unit, having a first pressure-regulating valve set and a second pressure-regulating valve set. The control unit is used for controlling the first reversing valve, the second reversing valve, the rope-releasing unit and/or the rope-receiving unit. The utility model also discloses a crane. Through the cooperation between two motors, rope receiving and rope releasing of two hoists can reliably achieve non-linear synchronization, and phenomenon of rope disorder can be prevented, adjusting by operators can be facilitated, and cost can be saved.
Description
Technical field
The utility model relates to the hoisting crane field, particularly relates to a kind of rope hydraulic control system, rope closing hydraulic control system and hoisting crane put.
Background technology
Present hoisting crane needs a plurality of winch concerted actions, these elevator rope closings or put when rope, because the position that rope is long, pulley is big or small and steel rope is on the jib is different, the action between a plurality of winchs is nonlinear, reaches synchronously relatively difficulty so control a plurality of winchs.
If a plurality of winch withdrawing ropes are asynchronous, then can cause following problem: put the relatively slow winch of rope speed and can bear larger load, steel rope is in excessive tensioned state, to all having a negative impact in the service life of steel rope and the service life of HM Hydraulic Motor; Put the comparatively faster winch of rope speed and can bear less load, even be not subjected to load, steel rope is in relaxed state, if too relax the disorder cable phenomenon will occur, and can have a strong impact on the normal operation of hoisting crane.
Hoisting crane realizes that a plurality of winchs are the mode that adopts closed loop control synchronously in the prior art, and this mode need to be used controller, sensor device, and cost is higher, and can only realize that simple approximately linear is synchronous, and debugging is difficulty relatively.
The utility model content
The technical matters that the utility model mainly solves is to disclose a kind of rope hydraulic control system, rope closing hydraulic control system and hoisting crane put, and can realize reliably the non-linear synchronous of two winchs.
For solving the problems of the technologies described above, the utility model discloses a kind of rope hydraulic control system of putting, this is put the rope hydraulic control system and comprises: oil pump, oil pump is communicated with the system oil sources; The first change-over valve, the first change-over valve connects oil pump; The second change-over valve, the second change-over valve connects oil pump; Put the rope unit, put the rope unit and comprise the first balance cock group and the second balance cock group; The first motor, the first hydraulic fluid port of the first motor connect the first outlet of the first change-over valve, and the second hydraulic fluid port of the first motor connects the second outlet of the first change-over valve through the first balance cock group; The second motor, the first hydraulic fluid port of the second motor connect the first outlet of the second change-over valve, and the second hydraulic fluid port of the second motor connects the second outlet of the second change-over valve through the second balance cock group; Control unit, control unit is used for control the first change-over valve, the second change-over valve and puts the rope unit.
Wherein, the first balance cock group comprises the first balance cock, and the second hydraulic fluid port of the first motor connects the outlet of the first balance cock, connects the second outlet of the first change-over valve through the entrance of the first balance cock, and the control mouth of the first balance cock connects the first hydraulic fluid port of the first motor; The second balance cock group comprises the second balance cock, and the second hydraulic fluid port of the second motor connects the outlet of the second balance cock, connects the second outlet of the second change-over valve through the entrance of the second balance cock, and the control mouth of the second balance cock connects the first hydraulic fluid port of the second motor.
Wherein, the spool of the first balance cock has one-way flow and bidirectional throttle two states, and the initial condition of the spool of the first balance cock is one-way flow; The spool of the second balance cock has one-way flow and bidirectional throttle two states, and the initial condition of the spool of the second balance cock is one-way flow.
Wherein, the first balance cock group comprises the first shuttle valve, and the first entrance of the first shuttle valve connects the external pressure oil sources, and the second entrance of the first shuttle valve connects the first hydraulic fluid port of the first motor, and the outlet of the first shuttle valve connects the control mouth of the first balance cock; The second balance cock group comprises the second shuttle valve, and the first entrance of the second shuttle valve connects the external pressure oil sources, and the second entrance of the second shuttle valve connects the first hydraulic fluid port of the second motor, and the outlet of the second shuttle valve connects the control mouth of the second balance cock.
Wherein, the first balance cock group is connected with the first electromagnetic valve, and the first entrance of the first shuttle valve connects the external pressure oil sources by the first electromagnetic valve, is used for connecting or blocking-up external pressure oil sources; The second balance cock group is connected with the second electromagnetic valve, and the first entrance of the second shuttle valve connects the external pressure oil sources by the second electromagnetic valve, is used for connecting or blocking-up external pressure oil sources.
Wherein, put the rope hydraulic control system and comprise the 3rd motor, the 3rd change-over valve and the 3rd balance cock group, the 3rd change-over valve connects oil pump, the first hydraulic fluid port of the 3rd motor connects the first outlet of the 3rd change-over valve, and the second hydraulic fluid port of the 3rd motor connects the second outlet of the 3rd change-over valve through the 3rd balance cock group.
For solving the problems of the technologies described above, the invention also discloses a kind of rope closing hydraulic control system, this rope closing hydraulic control system comprises: oil pump, oil pump is communicated with the system oil sources; The first change-over valve, the first change-over valve connects oil pump; The second change-over valve, the second change-over valve connects oil pump; Rope closing unit, rope closing unit comprise the first pressure regulating valve group and the second pressure regulating valve group; The first motor, the first hydraulic fluid port of the first motor connect the first outlet of the first change-over valve, and the second hydraulic fluid port of the first motor connects the second outlet and the first pressure regulating valve group of the first change-over valve simultaneously; The second motor, the first hydraulic fluid port of the second motor connect the first outlet of the second change-over valve, and the second hydraulic fluid port of the second motor connects the second outlet and the second pressure regulating valve group of the second change-over valve simultaneously; Control unit, control unit are used for control the first change-over valve, the second change-over valve and rope closing unit.
Wherein, the first pressure regulating valve group comprises the first proportional pressure control valve, be used for setting the hydraulic pressure of the first motor, the entrance of the first proportional pressure control valve connects the second outlet of the second hydraulic fluid port and first change-over valve of the first motor simultaneously, and the outlet of the first proportional pressure control valve connects oil sump tank; The second pressure regulating valve group comprises the second proportional pressure control valve, is used for setting the hydraulic pressure of the second motor, and the entrance of the second proportional pressure control valve connects the second outlet of the second hydraulic fluid port and second change-over valve of the second motor simultaneously, and the outlet of the second proportional pressure control valve connects oil sump tank.
Wherein, the first pressure regulating valve group also comprises the first by pass valve, and for the protection of the first motor, the entrance of the first by pass valve connects the entrance of the first proportional pressure control valve, and the outlet of the first by pass valve connects oil sump tank; The second pressure regulating valve group also comprises the second by pass valve, and for the protection of the second motor, the entrance of the second by pass valve connects the entrance of the second proportional pressure control valve, and the outlet of the second by pass valve connects oil sump tank.
Wherein, the rope closing hydraulic control system comprises the 3rd motor, the 3rd change-over valve and the 3rd pressure regulating valve group, the 3rd change-over valve connects oil pump, the first hydraulic fluid port of the 3rd motor connects the first outlet of the 3rd change-over valve, and the second hydraulic fluid port of the 3rd motor connects the second outlet and the 3rd pressure regulating valve group of the 3rd change-over valve simultaneously.
For solving the problems of the technologies described above, the invention also discloses a kind of hoisting crane, this hoisting crane comprises the first winch, the second winch, the first assembly pulley, the second assembly pulley and jib, the root of jib is movably connected on the hoisting crane, the first assembly pulley and the second assembly pulley all are fixed on the hoisting crane, this hoisting crane also comprises above-mentioned any described rope hydraulic control system and/or above-mentioned any described rope closing hydraulic control system of putting, the first winch connects the first motor, the second winch connects the second motor, rope on the second winch is fixed on the jib a end near the root of jib through the second assembly pulley, and the rope on the first winch is fixed on the jib a end away from the root of jib through the first assembly pulley.
Wherein, the first change-over valve and the second change-over valve are the 3 position-5 way electromagnetic valve.
The beneficial effects of the utility model are: the situation that is different from prior art, rope hydraulic control system, rope closing hydraulic control system and the hoisting crane put of the present utility model is by the collaborative work of two motors, can make reliably the rope closing of two winchs and put rope realizes non-linear synchronous, avoid producing the disorder cable phenomenon, handled easily the person debug, and saves cost.
Description of drawings
Fig. 1 is the hydraulic principle scheme drawing of the hydraulic control system of the utility model the first embodiment;
Fig. 2 is hydraulic control system shown in Figure 1 as putting the hydraulic principle scheme drawing of rope hydraulic control system when putting rope;
Fig. 3 is hydraulic control system shown in Figure 1 hydraulic principle scheme drawing when carrying out rope closing as the rope closing hydraulic control system;
Fig. 4 is the lifting structural representation partly of the hoisting crane of the utility model the second embodiment;
Fig. 5 is the hydraulic principle scheme drawing of the hydraulic control system of the utility model the 3rd embodiment.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
See also Fig. 1, Fig. 1 is the hydraulic principle scheme drawing of the hydraulic control system of the utility model the first embodiment.
The first change-over valve 102 has left position, three kinds of control positioies of meta and right position, and when the first change-over valve 102 was in left position, the pressure hydraulic fluid port connected the B2 outlet, and the A2 outlet connects oil sump tank 109; When the first change-over valve 102 was in meta, the pressure hydraulic fluid port was blocked, and the A2 outlet is connected with B2 and all connects oil sump tank 109; When the first change-over valve 102 was in right position, the pressure hydraulic fluid port connected the A2 outlet, and the B2 outlet connects oil sump tank 109.In the present embodiment, the first change-over valve 102 acquiescences are in meta.
The second change-over valve 103 also has left position, three kinds of control positioies of meta and right position, and the inside annexation corresponding in view of the second change-over valve 103 each control position is identical with the first change-over valve 102, therefore repeats no more herein.In the present embodiment, the second change-over valve 103 is also given tacit consent to and is in meta.
The first motor 106 is different with the stressing conditions of the second motor 107 in actual use to consider hydraulic control system 100, so in the design process of hydraulic control system 100, at first analyze the stressing conditions of the first motor 106 and the second motor 107, then judge active motor and driven motor.Supposing that the first motor 106 suffered pulling force greater than the second motor 107 suffered pulling force, are active motor depending on the first motor 106, is driven motor depending on the second motor 107.
In the present embodiment, the first change-over valve 102 and the second change-over valve 103 are the 3 position-5 way solenoid directional control valve.In other embodiments, the first change-over valve 102 and the second change-over valve 103 can be selected the multiple directional control valve of other types, such as guide's hydraulic directional control valve.
See also Fig. 2, Fig. 2 is hydraulic control system shown in Figure 1 as putting the hydraulic principle scheme drawing of rope hydraulic control system when putting rope.
When the rope hydraulic control system was put in hydraulic control system 100 conducts, it comprised oil pump 101, the first change-over valve 102, the second change-over valve 103, puts rope unit 105, the first motor 106, the second motor 107 and control unit.Put rope unit 105 and comprise the first balance cock group and the second balance cock group, be used for the fluid flow that the rope hydraulic control system is put in regulation and control.Wherein, the first balance cock group comprises that the first shuttle valve 1051 and the first balance cock 1052, the second balance cock groups comprise the second shuttle valve 1053 and the second balance cock 1054.Control unit is used for control the first change-over valve 102, the second change-over valve 103 and puts rope unit 105.
The pressure hydraulic fluid port of import connected system oil sources 108, the first change-over valves 102 of oil pump 101 connects the outlet of oil pump 101, and two return openings of the first change-over valve 102 connect oil sump tank 109.The A6 hydraulic fluid port of the first motor 106 connects the A2 outlet of the first change-over valve 102, and the B6 hydraulic fluid port of the first motor 106 connects the B2 outlet of the first change-over valve 102 through the first balance cock group.
Particularly, the B6 hydraulic fluid port of the first motor 106 connects the outlet of the first balance cock 1052, connects the B2 outlet of the first change-over valve 102 through the entrance of the first balance cock 1052, and the control mouth of the first balance cock 1052 connects the A6 hydraulic fluid port of the first motor 106.In the present embodiment, the spool of the first balance cock 1052 has one-way flow and bidirectional throttle two states, and the initial condition of this spool is one-way flow, the outlet one-way flow that this moment, the fluid flow can only be from the entrance of the first balance cock 1052 to the first balance cock 1052, the hydraulic pressure of the control mouth of the first balance cock 1052 can change the state of the spool of the first balance cock 1052.The first entrance of the first shuttle valve 1051 connects external pressure oil sources P by the first electromagnetic valve 110, be used for connecting or blocking-up external pressure oil sources P, the second entrance of the first shuttle valve 1051 connects the A2 outlet of A6 hydraulic fluid port and first change-over valve 102 of the first motor 106 simultaneously, and the outlet of the first shuttle valve 1051 connects the control mouth of the first balance cock 1052.
The pressure hydraulic fluid port of the second change-over valve 103 also connects the outlet of oil pump 101, and two return openings of the second change-over valve 103 connect oil sump tank 109.The A7 hydraulic fluid port of the second motor 107 connects the A3 outlet of the second change-over valve 103, and the B7 hydraulic fluid port of the second motor 107 connects the B3 outlet of the second change-over valve 103 through the second balance cock group.
Particularly, the B7 hydraulic fluid port of the second motor 107 connects the outlet of the second balance cock 1054, connects the B3 outlet of the second change-over valve 103 through the entrance of the second balance cock 1054, and the control mouth of the second balance cock 1054 connects the A7 hydraulic fluid port of the second motor 107.In the present embodiment, the spool of the second balance cock 1054 has one-way flow and bidirectional throttle two states, and the initial condition of this spool is one-way flow, the outlet one-way flow that this moment, the fluid flow can only be from the entrance of the second balance cock 1054 to the second balance cock 1054, the hydraulic pressure of the control mouth of the second balance cock 1054 can change the state of the spool of the second balance cock 1054.The first entrance of the second shuttle valve 1053 connects external pressure oil sources P by the second electromagnetic valve 111, be used for connecting or blocking-up external pressure oil sources P, the second entrance of the second shuttle valve 1053 connects the A3 outlet of A7 hydraulic fluid port and second change-over valve 103 of the second motor 107 simultaneously, and the outlet of the second shuttle valve 1053 connects the control mouth of the second balance cock 1054.
Specific works principle of putting the rope hydraulic control system of the present utility model below will be described:
When putting the rope hydraulic control system when not working, the first change-over valve 102 and the second change-over valve 103 are all uncontrolled, and the first change-over valve 102 acquiescences are got back to meta, are used for blocking-up oil pump 101, the second change-over valves 103 acquiescences and get back to meta, are used for blocking-up oil pump 101.Control unit is controlled the first electromagnetic valve 110 and the second electromagnetic valve 111 blocking-up external pressure oil sources P;
Put when rope when putting the rope hydraulic control system, control unit is controlled the first change-over valve 102, make the first change-over valve 102 be in right position, be used for connecting oil pump 101, control the first electromagnetic valve 110 blocking-up external pressure oil sources P, the spool that is used for control the first balance cock 1052 is bidirectional throttle, at this moment, the A2 outlet of the first change-over valve 102 is the A6 hydraulic fluid port fuel feeding of the first motor 106, the B2 outlet of the first change-over valve 102 is the B6 hydraulic fluid port oil extraction of the first motor 106, so that the first motor 106 is as the active motor active rotation; The second change-over valve 103 is uncontrolled, to get back to meta, be used for blocking-up oil pump 101, control unit is controlled the second electromagnetic valve 111 and is connected external pressure oil sources P, the spool that is used for control the second balance cock 1054 is bidirectional throttle, and at this moment, the A3 of the second change-over valve 103 outlet and the B3 of change-over valve 103 of being connected export and connect simultaneously oil sump tank 109, the oil that is used for circle transmission the second motor 107 is so that the second motor 107 rotates under external force drives as driven motor.
Like this, the first motor 106 is initiatively transferred weight by the cable traction device in the external world, and weight is when transferring, the second motor 107 will be subjected to the gravity pulling of weight and rotate, it is non-linear synchronous that the rope process of putting of two motors will reach, so the rope that is used for traction is all stressed and be in stretching state, avoids producing the disorder cable phenomenon.
See also Fig. 3, Fig. 3 is hydraulic control system shown in Figure 1 hydraulic principle scheme drawing when carrying out rope closing as the rope closing hydraulic control system.
When hydraulic control system 100 during as the rope closing hydraulic control system, it comprises oil pump 101, the first change-over valve 102, the second change-over valve 103, rope closing unit 104, the first motor 106, the second motor 107 and control unit.Rope closing unit 104 comprises the first pressure regulating valve group and the second pressure regulating valve group, is used for setting the hydraulic pressure of rope closing hydraulic control system.Wherein, the first pressure regulating valve group comprises that the first proportional pressure control valve 1041 and the first by pass valve 1042, the first proportional pressure control valves 1041 are used for setting the hydraulic pressure of the first motor 106, and the first by pass valve 1042 is for the protection of the first motor 106; The second pressure regulating valve group comprises that the second proportional pressure control valve 1043 and the second by pass valve 1044, the second proportional pressure control valves 1043 are used for setting the hydraulic pressure of the second motor 107, and the second by pass valve 1044 is for the protection of the second motor 107.Control unit is used for control the first change-over valve 102, the second change-over valve 103 and rope closing unit 104.
The pressure hydraulic fluid port of import connected system oil sources 108, the first change-over valves 102 of oil pump 101 connects the outlet of oil pump 101, and two return openings of the first change-over valve 102 connect oil sump tank 109.The A6 hydraulic fluid port of the first motor 106 connects the A2 outlet of the first change-over valve 102, and the B6 hydraulic fluid port of the first motor 106 connects B2 outlet and the first pressure regulating valve group of the first change-over valve 102 simultaneously.
Particularly, the entrance of the first proportional pressure control valve 1041 connects the B2 outlet of the first change-over valve 102 and the B6 hydraulic fluid port of the first motor 106 simultaneously, and the outlet of the first proportional pressure control valve 1041 connects oil sump tank 109.The entrance of the first by pass valve 1042 connects the entrance of the first proportional pressure control valve 1041, and the outlet of the first by pass valve 1042 connects oil sump tank 109.In the present embodiment, the first proportional pressure control valve 1041 is electromagnetic proportion relief valve, and the first by pass valve 1042 is straight ejector half by pass valve, and both are connected in parallel.In other embodiments, can only access the first proportional pressure control valve 1041.
The pressure hydraulic fluid port of the second change-over valve 103 connects the outlet of oil pump 101, and the A7 hydraulic fluid port of two return openings connection oil sump tank 109, the second motors 107 of the second change-over valve 103 connects the A3 outlet of the second change-over valve 103.The B7 hydraulic fluid port of the second motor 107 connects B3 outlet and the second pressure regulating valve group of the second change-over valve 103 simultaneously.
Particularly, the entrance of the second proportional pressure control valve 1043 connects the B3 outlet of the second change-over valve 103 and the B7 hydraulic fluid port of the second motor 107 simultaneously, and the outlet of the second proportional pressure control valve 1043 connects oil sump tank 109.The entrance of the second by pass valve 1044 connects the entrance of the second proportional pressure control valve 1043, and the outlet of the second by pass valve 1044 connects oil sump tank 109.In the present embodiment, the second proportional pressure control valve 1043 is electromagnetic proportion relief valve, and the second by pass valve 1044 is straight ejector half by pass valve, and both are connected in parallel.In other embodiments, can only access the second proportional pressure control valve 1043.
The specific works principle of rope closing hydraulic control system of the present utility model below will be described:
When the rope closing hydraulic control system was not worked, the first change-over valve 102 and the second change-over valve 103 were all uncontrolled, and the first change-over valve 102 acquiescences are got back to meta, were used for blocking-up oil pump 101, the second change-over valves 103 acquiescences and got back to meta, were used for blocking-up oil pump 101.Control unit is controlled the first electromagnetic valve 110 and the second electromagnetic valve 111 blocking-up external pressure oil sources P;
When the rope closing hydraulic control system is carried out rope closing, control unit is controlled the first change-over valve 102 and is in left position, be used for connecting oil pump 101, control the first electromagnetic valve 110 blocking-up external pressure oil sources P, the spool that is used for control the first balance cock 1052 is got back to initial condition, it is one-way flow, and control unit is set the first proportional pressure control valve 1041 and is the high pressure overflow situation, at this moment, the B2 outlet of the first change-over valve 102 is the B6 hydraulic fluid port fuel feeding of the first motor 106, the A2 outlet of the first change-over valve 102 is the A6 hydraulic fluid port oil extraction of the first motor 106, so that the first motor 106 produces larger power as active motor; Control unit is controlled the second change-over valve 103 and is in left position, be used for connecting oil pump 101, control unit is controlled the second electromagnetic valve 111 blocking-up external pressure oil sources P, the spool that is used for control the second balance cock 1054 is got back to the one-way flow state, and control unit is set the second proportional pressure control valve 1043 and is the low pressure overflow situation, at this moment, the B3 outlet of the second change-over valve 103 is the B7 hydraulic fluid port fuel feeding of the second motor 107, the A3 outlet of the second change-over valve 103 is the A7 hydraulic fluid port oil extraction of the second motor 107, so that the second motor 107 produces smaller power as driven motor.
Like this, the first motor 106 and the second motor 107 are by extraneous cable traction device pulling weight, shown in aforementioned, the first motor 106 is stressed large than the second motor 107, because the power that the first motor 106 provides is greater than the second motor 107, the rope closing process of two motors will reach non-linear synchronously, so the rope that is used for traction is all stressed and be in stretching state, avoid producing the disorder cable phenomenon.
See also Fig. 4, Figure 4 shows that the lifting structural representation partly of the hoisting crane of the utility model the second embodiment.
The lifting of hoisting crane partly comprises jib 401, the first assembly pulley 402, the second assembly pulley 403, the first winch 406 and the second winch 407.In the present embodiment, hoisting crane also comprises the hydraulic control system (not shown) of the first embodiment, and hydraulic control system is used for the retractable rope action of the lifting part of control hoisting crane.In other embodiments, hoisting crane can include only and put rope hydraulic control system or rope closing hydraulic control system.The first winch 406 connects the first motor (not shown), and the second winch 407 connects the second motor (not shown), is wound with on the first winch 406 on rope 404, the second winchs 407 and is wound with rope 405.The root of jib 401 is movably connected on the hoisting crane, and the first assembly pulley 402 and the second assembly pulley 403 all are fixed on the hoisting crane.Rope 404 on the first winch 406 is fixed on the jib 401 a end away from the root of jib 401 through the first assembly pulley 402, and the rope 405 on the second winch 407 is fixed on the jib 401 a end near the root of jib 401 through the second assembly pulley 403.
Because the position of rope 404 harmony 405 on jib 401 is different, according to the stressing conditions analysis, it is stressed large than the second motor to judge the first motor, and then selected the first motor is active motor, and selected the second motor is driven motor.When needs jib 401 was transferred, the first motor relied on the pressure active rotation of hydraulic oil to drive the first winch and puts rope; Because the first motor is put rope jib 401 is transferred, the oil circuit resistance that the gravity of jib 401 makes the second winch overcome the second motor drives the driven rotation of the second motor, thereby realizes that the second winch puts rope.Like this, rope 404 and rope 405 all are in extended state, can not produce the disorder cable phenomenon;
When 401 lifting of needs jib, the first motor operations is born larger load at high pressure conditions, and its active rotation drives the first winch rope closing; The second motor at low-pressure state, bears less load as driven motor operations, and its active rotation drives the second winch rope closing.Like this, rope 404 and rope 405 all are in extended state, can not produce the disorder cable phenomenon.
In the present embodiment, according to the rope the 404 stressed 405 stressed large situations of restricting with the first motor as active motor, with the second motor as driven motor.In other embodiments, can according to the rope the 404 stressed 405 stressed little situations of restricting with the first motor as driven motor, with the second motor as active motor, need this moment the control unit change to the control of each several part in the hydraulic control system, in view of control first motor of control unit is driven motor, controlling the second motor and be active motor, to carry out rope closing and the control process of putting rope identical with control process among the first embodiment, therefore repeats no more herein.
Because controlling the first motor and the second motor, the control unit of hydraulic control system puts simultaneously rope or rope closing simultaneously, so hydraulic control system is not only as the rope closing hydraulic control system but also as the rope closing in the situation of putting the rope hydraulic control system with put the rope process timesharing is independently carried out.It should be noted that because hydraulic control system can comprise the rope closing unit and put the rope unit, also can include only one of them, so hoisting crane should only have the function of lifting or only have the function of transferring.
In above-mentioned two embodiment, the rope closing unit comprises the first pressure regulating valve group and the second pressure regulating valve group, is used for setting the hydraulic pressure of hydraulic control system.Put the rope unit and comprise the first balance cock group and the second balance cock group; the fluid flow that is used for the regulation and control hydraulic control system; those skilled in the art can produce other rope closing unit that synthesized by different valving and put the rope unit according to common practise and the utility model of this area easily; and by the hydraulic control system that comprises this rope closing unit and put the rope unit, so this hydraulic control system should be included within the protection domain of the present utility model equally.
See also Fig. 5, Figure 5 shows that the hydraulic principle scheme drawing of the hydraulic control system of the utility model the 3rd embodiment.
Hydraulic control system is also comprising the 3rd motor 503, the 3rd change-over valve, the 3rd pressure regulating valve group and the 3rd balance cock group except comprising the first motor 501 and the second motor 502 on the basis of the first embodiment, the 3rd change-over valve connects oil pump, and the first hydraulic fluid port of the 3rd motor 503 connects the first outlet of the 3rd change-over valve.
Since this hydraulic control system both can be used as put the rope hydraulic control system also can be used as the rope closing hydraulic control system, so put the rope hydraulic control system the 3rd motor 503 the second hydraulic fluid port through the 3rd balance cock group connect the 3rd change-over valve second the outlet, the second hydraulic fluid port of the 3rd motor 503 of rope closing hydraulic control system connect simultaneously the 3rd change-over valve second the outlet and the 3rd pressure regulating valve group.Because the concrete annexation of each element of this hydraulic control system is identical with the first embodiment, so repeat no more herein.
In the time of in the actual use of this hydraulic control system, three motors are cooperating together, and each motor drives a winch, when hydraulic control system work, and can be according to stressing conditions division active motor or the driven motor of the rope on each winch.In the present embodiment, can be with any one motor in three motors as active motor, all the other two motors are as driven motor.In other embodiments, can be with any two motors in three motors as active motor, all the other motors are as driven motor.
In above-mentioned three embodiment; the first embodiment comprises two motors; the second embodiment comprises two motors; the 3rd embodiment comprises three motors; in other embodiments; the number of motor can increase along with the number of winch and increase; and active motor can be one or more; driven motor can be one or more; those skilled in the art can produce the hydraulic control system that comprises a plurality of motors according to common practise and the utility model of this area easily, and the hydraulic control system that therefore comprises the motor of other numbers should be included within the protection domain of the present utility model equally.
By the way, rope hydraulic control system, rope closing hydraulic control system and the hoisting crane put of the present utility model is by the collaborative work of two motors, can make reliably the rope closing of two winchs and put rope realizes non-linear synchronous, avoid producing the disorder cable phenomenon, handled easily the person debug, and saves cost.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification sheets and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (12)
1. put the rope hydraulic control system for one kind, it is characterized in that, comprising:
Oil pump, described oil pump is communicated with the system oil sources;
The first change-over valve, described the first change-over valve connects described oil pump;
The second change-over valve, described the second change-over valve connects described oil pump;
Put the rope unit, the described rope unit of putting comprises the first balance cock group and the second balance cock group;
The first motor, the first hydraulic fluid port of described the first motor connect the first outlet of described the first change-over valve, and the second hydraulic fluid port of described the first motor connects the second outlet of described the first change-over valve through described the first balance cock group;
The second motor, the first hydraulic fluid port of described the second motor connect the first outlet of described the second change-over valve, and the second hydraulic fluid port of described the second motor connects the second outlet of described the second change-over valve through described the second balance cock group;
Control unit, described control unit is used for controlling described the first change-over valve, described the second change-over valve and the described rope unit of putting.
2. the rope hydraulic control system of putting according to claim 1, it is characterized in that, described the first balance cock group comprises the first balance cock, the second hydraulic fluid port of described the first motor connects the outlet of described the first balance cock, the entrance of described the first balance cock of process connects the second outlet of described the first change-over valve, and the control mouth of described the first balance cock connects the first hydraulic fluid port of described the first motor;
Described the second balance cock group comprises the second balance cock, the second hydraulic fluid port of described the second motor connects the outlet of described the second balance cock, the entrance of described the second balance cock of process connects the second outlet of described the second change-over valve, and the control mouth of described the second balance cock connects the first hydraulic fluid port of described the second motor.
3. the rope hydraulic control system of putting according to claim 2 is characterized in that, the spool of described the first balance cock has one-way flow and bidirectional throttle two states, and the initial condition of the spool of described the first balance cock is one-way flow;
The spool of described the second balance cock has one-way flow and bidirectional throttle two states, and the initial condition of the spool of described the second balance cock is one-way flow.
4. the rope hydraulic control system of putting according to claim 2, it is characterized in that, described the first balance cock group comprises the first shuttle valve, the first entrance of described the first shuttle valve connects the external pressure oil sources, the second entrance of described the first shuttle valve connects the first hydraulic fluid port of described the first motor, and the outlet of described the first shuttle valve connects the control mouth of described the first balance cock;
Described the second balance cock group comprises the second shuttle valve, the first entrance of described the second shuttle valve connects described external pressure oil sources, the second entrance of described the second shuttle valve connects the first hydraulic fluid port of described the second motor, and the outlet of described the second shuttle valve connects the control mouth of described the second balance cock.
5. the rope hydraulic control system of putting according to claim 4, it is characterized in that, described the first balance cock group is connected with the first electromagnetic valve, and the first entrance of described the first shuttle valve connects described external pressure oil sources by described the first electromagnetic valve, is used for connecting or blocking described external pressure oil sources;
Described the second balance cock group is connected with the second electromagnetic valve, and the first entrance of described the second shuttle valve connects described external pressure oil sources by described the second electromagnetic valve, is used for connecting or blocking described external pressure oil sources.
6. the rope hydraulic control system of putting according to claim 1, it is characterized in that, the described rope hydraulic control system of putting comprises the 3rd motor, the 3rd change-over valve and the 3rd balance cock group, described the 3rd change-over valve connects described oil pump, the first hydraulic fluid port of described the 3rd motor connects the first outlet of described the 3rd change-over valve, and the second hydraulic fluid port of described the 3rd motor connects the second outlet of described the 3rd change-over valve through described the 3rd balance cock group.
7. a rope closing hydraulic control system is characterized in that, comprising:
Oil pump, described oil pump is communicated with the system oil sources;
The first change-over valve, described the first change-over valve connects described oil pump;
The second change-over valve, described the second change-over valve connects described oil pump;
Rope closing unit, described rope closing unit comprise the first pressure regulating valve group and the second pressure regulating valve group;
The first motor, the first hydraulic fluid port of described the first motor connect the first outlet of described the first change-over valve, and the second hydraulic fluid port of described the first motor connects the second outlet and described the first pressure regulating valve group of described the first change-over valve simultaneously;
The second motor, the first hydraulic fluid port of described the second motor connect the first outlet of described the second change-over valve, and the second hydraulic fluid port of described the second motor connects the second outlet and described the second pressure regulating valve group of described the second change-over valve simultaneously;
Control unit, described control unit is used for controlling described the first change-over valve, described the second change-over valve and described rope closing unit.
8. rope closing hydraulic control system according to claim 7, it is characterized in that, described the first pressure regulating valve group comprises the first proportional pressure control valve, be used for setting the hydraulic pressure of described the first motor, the entrance of described the first proportional pressure control valve connects the second outlet of the second hydraulic fluid port and described first change-over valve of described the first motor simultaneously, and the outlet of described the first proportional pressure control valve connects oil sump tank;
Described the second pressure regulating valve group comprises the second proportional pressure control valve, be used for setting the hydraulic pressure of described the second motor, the entrance of described the second proportional pressure control valve connects the second outlet of the second hydraulic fluid port and described second change-over valve of described the second motor simultaneously, and the outlet of described the second proportional pressure control valve connects described oil sump tank.
9. rope closing hydraulic control system according to claim 8, it is characterized in that, described the first pressure regulating valve group comprises the first by pass valve, for the protection of described the first motor, the entrance of described the first by pass valve connects the entrance of described the first proportional pressure control valve, and the outlet of described the first by pass valve connects described oil sump tank;
Described the second pressure regulating valve group comprises the second by pass valve, and for the protection of described the second motor, the entrance of described the second by pass valve connects the entrance of described the second proportional pressure control valve, and the outlet of described the second by pass valve connects described oil sump tank.
10. rope closing hydraulic control system according to claim 7, it is characterized in that, described rope closing hydraulic control system comprises the 3rd motor, the 3rd change-over valve and the 3rd pressure regulating valve group, described the 3rd change-over valve connects described oil pump, the first hydraulic fluid port of described the 3rd motor connects the first outlet of described the 3rd change-over valve, and the second hydraulic fluid port of described the 3rd motor connects the second outlet and described the 3rd pressure regulating valve group of described the 3rd change-over valve simultaneously.
11. hoisting crane, comprise the first winch, the second winch, the first assembly pulley, the second assembly pulley and jib, the root of described jib is movably connected on the described hoisting crane, described the first assembly pulley and described the second assembly pulley all are fixed on the described hoisting crane, it is characterized in that, described hoisting crane also comprise according to claim 1 to 6 each describedly put the rope hydraulic control system and/or according to claim 7 to 10 each described rope closing hydraulic control systems, described the first winch connects described the first motor, described the second winch connects described the second motor, rope on described the second winch is fixed on the described jib a end near the root of described jib through described the second assembly pulley, and the rope on described the first winch is fixed on the described jib a end away from the root of described jib through described the first assembly pulley.
12. hoisting crane according to claim 11 is characterized in that, described the first change-over valve and described the second change-over valve are the 3 position-5 way electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045636 CN202829410U (en) | 2012-02-13 | 2012-02-13 | Rope-releasing hydraulic control system, rope-receiving hydraulic control system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220045636 CN202829410U (en) | 2012-02-13 | 2012-02-13 | Rope-releasing hydraulic control system, rope-receiving hydraulic control system and crane |
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| Publication Number | Publication Date |
|---|---|
| CN202829410U true CN202829410U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220045636 Expired - Lifetime CN202829410U (en) | 2012-02-13 | 2012-02-13 | Rope-releasing hydraulic control system, rope-receiving hydraulic control system and crane |
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| Country | Link |
|---|---|
| CN (1) | CN202829410U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556872A (en) * | 2012-02-13 | 2012-07-11 | 中联重科股份有限公司 | Hydraulic rope unreeling control system, hydraulic rope reeling control system and crane |
| CN103253594A (en) * | 2013-05-07 | 2013-08-21 | 徐工集团工程机械股份有限公司 | Method and device for adjusting length of multi-winding steel wire rope of crawler crane |
| CN115676660A (en) * | 2022-10-20 | 2023-02-03 | 北京科技大学 | Cable rope synchronous retracting and releasing system of deepwater rock breaking device |
-
2012
- 2012-02-13 CN CN 201220045636 patent/CN202829410U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556872A (en) * | 2012-02-13 | 2012-07-11 | 中联重科股份有限公司 | Hydraulic rope unreeling control system, hydraulic rope reeling control system and crane |
| CN102556872B (en) * | 2012-02-13 | 2014-06-25 | 中联重科股份有限公司 | Hydraulic rope unreeling control system, hydraulic rope reeling control system and crane |
| CN103253594A (en) * | 2013-05-07 | 2013-08-21 | 徐工集团工程机械股份有限公司 | Method and device for adjusting length of multi-winding steel wire rope of crawler crane |
| CN115676660A (en) * | 2022-10-20 | 2023-02-03 | 北京科技大学 | Cable rope synchronous retracting and releasing system of deepwater rock breaking device |
| CN115676660B (en) * | 2022-10-20 | 2023-05-12 | 北京科技大学 | Cable synchronous winding and unwinding system of deepwater rock breaking device |
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