Hydraulic system of rope guider capable of being opened and closed of towing winch

Abstract

The utility model discloses a hydraulic system of a towing engine rope guider capable of being opened and closed. The hydraulic system comprises a rope guider oil cylinder, a balance valve, a first control valve, an overflow valve and a hydraulic station. One side of the balance valve is connected with a rodless cavity of the rope guider oil cylinder through a first pipeline and connected with a rod cavity of the rope guider oil cylinder through a second pipeline, the other side of the balance valve is connected with one side of the first control valve through two third pipelines, and an oil pump and an oil tank are arranged on the hydraulic station. The other side of the first control valve is respectively connected with the oil pump and the oil tank through two fourth pipelines; the overflow valve is arranged on a fifth pipeline, one end of the fifth pipeline is connected with the first pipeline, and the other end of the fifth pipeline is connected with a fourth pipeline connected with the oil tank. The hydraulic system of the rope guider capable of being opened and closed of the towing winch is large in driving force and high in safety, stability and reliability.

Description

Technical Field

[0001] The present application relates to a hydraulic device of a rope guide of a towing cable, and in particular to a hydraulic system of an openable and closable rope guide of a towing cable. Background Art

[0002] The main function of the towing winch is to connect the tugboat and the towed object so that the towed object and the tugboat can move forward together. The towed object can be a ship or other marine equipment. As an important component of the towing winch, the rope arranger ensures that the wire rope can be accurately and quickly arranged and installed in place during the operation of the towing winch. However, the wire rope of the traditional rope arranger is fixed in the gap. When the end of the wire rope is equipped with accessories, the accessories cannot pass through the rope arranger because they are too large. The rope arranger roller is linked to the drum gear, and the position of the rope arranger relative to the drum cannot be simply adjusted. Most of the existing openable and closable rope arrangers are purely mechanical, which have problems such as insufficient thrust, large lateral force, low stability and reliability, and cannot meet the increasingly high demands. Utility Model Content

[0003] The purpose of the present application is to provide a hydraulic system for an openable and closable rope guide of a towing winch, which has a large driving force and high safety, stability and reliability.

[0004] In order to solve at least one of the above technical problems, the technical solution of the present application is as follows:

[0005] A hydraulic system for an openable and closed rope-drawing device for a towing machine according to an embodiment of the present application comprises: a rope-drawing device cylinder, a balancing valve, a first control valve, an overflow valve and a hydraulic station; wherein, one side of the balancing valve is connected to the rodless chamber of the rope-drawing device cylinder through a first pipeline and is connected to the rod chamber of the rope-drawing device cylinder through a second pipeline, the other side of the balancing valve is connected to one side of the first control valve through two third pipelines, an oil pump and an oil tank are respectively provided on the hydraulic station, and the other side of the first control valve is respectively connected to the oil pump and the oil tank through two fourth pipelines; the overflow valve is provided on the fifth pipeline, one end of the fifth pipeline is connected to the first pipeline, and the other end of the fifth pipeline is connected to the fourth pipeline connected to the oil tank.

[0006] In a possible implementation of the above embodiment, the hydraulic system of the present application also includes: a shuttle valve, one end of which is connected to one of the third pipelines, and the other end of the shuttle valve is connected to another third pipeline; a pressure compensator, which is arranged on the fourth pipeline connected to the oil pump, and the pressure compensator is connected to the middle part of the shuttle valve through the pipeline.

[0007] In a possible implementation of the above embodiment, the hydraulic system of the present application further includes: a second control valve, which is arranged on the fifth pipeline and located between the first pipeline and the overflow valve.

[0008] In a possible implementation of the above embodiment, the hydraulic system of the present application also includes: a one-way valve, which is arranged on a sixth pipeline, one end of the sixth pipeline is connected to the second pipeline, and the other end of the sixth pipeline is connected to the second pipeline between the second control valve and the overflow valve, and the liquid outlet of the one-way valve corresponds to the second pipeline.

[0009] In a possible implementation of the above embodiment, the second control valve is a hydraulic solenoid valve.

[0010] In a possible implementation of the above embodiment, the first control valve is an electro-hydraulic proportional valve.

[0011] In a possible implementation of the above embodiment, a displacement sensor is provided on the rope guide cylinder.

[0012] In a possible implementation of the above embodiment, the displacement sensor is a magnetostrictive displacement sensor.

[0013] In a possible implementation of the above embodiment, a first pressure measuring joint is provided on the first pipeline.

[0014] In a possible implementation of the above embodiment, a second pressure measuring joint is provided on the second pipeline.

[0015] The above technical solution of the present application has at least one of the following beneficial effects:

[0016] The hydraulic system of the rope guide of the towing machine according to the present application can open and close the rope guide, and the piston rod of the rope guide cylinder is controlled to be extended and retracted through the first control valve and the oil pump of the hydraulic station. For example, the extension and retraction direction and speed of the piston rod of the rope guide cylinder can be controlled, so that the two roller assemblies are moved closer or farther away from each other, thereby adjusting the distance between the two roller assemblies to facilitate the passage of wire rope accessories of different sizes between the two roller assemblies; when the piston rod of the rope guide cylinder is subjected to the allowable lateral force, the balance valve can ensure that the piston rod of the rope guide cylinder does not move. If the lateral force exceeds the allowable range, the balance valve can retract the piston rod of the rope guide cylinder to avoid damage to the equipment due to excessive lateral force; when the oil pressure of the rope guide cylinder is too high, the overflow valve can control the corresponding oil to flow back to the oil tank of the hydraulic station through the fifth pipeline and the fourth pipeline. Therefore, compared with the traditional mechanical rope guide, the hydraulic system of the rope guide of the towing machine of the present application can open and close the rope guide, which not only has a large driving force, convenient and quick operation, but also has high safety, stability and reliability, and can meet increasingly higher demands.

[0017] In addition, in the technical solution of the present application, unless otherwise specified, the technical solution can be implemented by adopting conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A hydraulic principle diagram of a hydraulic system of an openable and closable rope guide of a towing machine according to an embodiment of the present application;

[0020] Figure 2 This is a schematic structural diagram of an openable and closable rope guide of a towing machine according to an embodiment of the present application.

[0021] Description of the reference numerals in the accompanying drawings:

[0022] Rope guide cylinder 101; balance valve 102; first control valve 103; overflow valve 104; shuttle valve 105; pressure compensator 106; second control valve 107; check valve 108;

[0023] First pipeline 109; second pipeline 110; third pipeline 111; fourth pipeline 112; fifth pipeline 113; sixth pipeline 114; first pressure measuring joint 115; second pressure measuring joint 116;

[0024] Fixed frame 201; movable frame 202; roller assembly 203; guide shaft 204. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present application, rather than all of the embodiments, and are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred elements must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present application. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are only used for descriptive purposes and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] See also Figure 1 As shown, a hydraulic system of an openable and closable rope guide of a towing machine according to the present application is schematically shown, including a rope guide cylinder 101, a balance valve 102, a first control valve 103, a relief valve 104 and a hydraulic station (not shown).

[0029] Among them, the hydraulic station is provided with an oil pump and an oil tank, one side of the balance valve 102 is connected to the rodless chamber of the rope drawer cylinder 101 through the first pipeline 109 and is connected to the rod chamber of the rope drawer cylinder 101 through the second pipeline 110, the other side of the balance valve 102 is respectively connected to one side of the first control valve 103 through two third pipelines 111, and the other side of the first control valve 103 is respectively connected to the oil pump and the oil tank through two fourth pipelines 112. The overflow valve 104 is provided on the fifth pipeline 113, one end of the fifth pipeline 113 is connected to the first pipeline 109, and the other end of the fifth pipeline 113 is connected to the fourth pipeline 112 connected to the oil tank.

[0030] It should be noted that if Figure 2As shown, the towing machine can open and close the rope guide generally includes a fixed frame 201, two mobile frames 202, two rope guide cylinders 101 and two roller assemblies 203. Among them, the two mobile frames 202 and the two rope guide cylinders 101 are respectively arranged on the fixed frame 201, and the two rope guide cylinders 101 are respectively installed at both ends of the fixed frame 201, and the output end of each rope guide cylinder 101 is respectively connected to a corresponding mobile frame 202, and each mobile frame 202 is respectively provided with a corresponding roller assembly 203, and the fixed frame 201 is provided with a guide shaft 204 slidably connected to the two mobile frames 202, and the guide shafts 204 are two and parallel to each other, and each mobile frame 202 is respectively slidably connected to the two guide shafts 204. The wire rope of the towing winch passes through the two roller assemblies 203, and the two rope guide cylinders 101 drive the two moving frames 202 to move along the guide shaft 204, so that the two roller assemblies 203 are close to or away from each other, thereby realizing rope adjustment. Each rope guide cylinder 101 is connected to the hydraulic station through a set of oil circuits, and each set of oil circuits is respectively provided with a rope guide cylinder 101, a balance valve 102, a first control valve 103, a relief valve 104, etc. The two sets of hydraulic oil circuits can be connected in parallel to control the two rope guide cylinders 101 separately.

[0031] That is to say, the towing machine of the present application can open and close the hydraulic system of the rope guide, and control the piston rod of the rope guide cylinder 101 to extend and retract through the first control valve 103 and the oil pump of the hydraulic station. For example, the extension direction and extension speed of the piston rod of the rope guide cylinder 101 can be controlled, so that the two roller assemblies 203 are close to or away from each other, thereby adjusting the distance between the two roller assemblies 203, so that wire rope accessories of different sizes can pass through the two roller assemblies 203. When the roller assembly 203 is subjected to the allowed lateral force, the lateral force will act on the piston rod of the rope guide cylinder 101, and the lateral force can be balanced by the balance valve 102 to ensure that the piston rod of the rope guide cylinder 101 does not move, so that the roller assembly 203 remains stable. If the lateral force exceeds the allowed range, the piston rod of the rope guide cylinder 101 is retracted through the balance valve 102, thereby avoiding damage to the equipment due to excessive lateral force. When the oil pressure of the rope guide cylinder 101 is too high, the overflow valve 104 can also control the corresponding oil to flow back to the oil tank of the hydraulic station through the fifth pipeline 113 and the fourth pipeline 112. Therefore, compared with the traditional mechanical rope guide, the hydraulic system of the rope guide of the towing machine of the present application can open and close the rope guide, which not only has a large driving force, high precision, convenient and fast operation, but also has high safety, stability and reliability, and a wide range of applications, and can meet increasingly high demands.

[0032] In some embodiments, Figure 1As shown, the balancing valve 102 can be a balancing valve 102 with a bidirectional structure, and the balancing valve 102 includes two sets of control valves, one side of which is connected to the first pipeline 109 and the other side is connected to one of the third pipelines 111, and one side of the other control valve is connected to the second pipeline 110 and the other side is connected to another third pipeline 111, and the two sets of control valves are connected to each other. In this way, the lateral force on the rope tensioner cylinder 101 is better balanced, and the balance of flow and pressure is achieved, which is safer, more stable and reliable.

[0033] In some embodiments, Figure 1 As shown, the hydraulic system of the present application further includes a shuttle valve 105 and a pressure compensator 106. One end of the shuttle valve 105 is connected to one of the third pipelines 111, and the other end of the shuttle valve 105 is connected to another third pipeline 111. The pressure compensator 106 is arranged on the fourth pipeline 112 connected to the oil pump, and the pressure compensator 106 is connected to the middle of the shuttle valve 105 through the pipeline. It should be noted that interfaces are respectively arranged at both ends and the middle of the shuttle valve 105.

[0034] That is to say, a differential pressure reduction structure is formed by the shuttle valve 105 and the pressure compensator 106. When the load or working state of the rope guide cylinder 101 changes, the pressure compensator 106 and the shuttle valve 105 cooperate to automatically adjust the system pressure, so that the pressure of the rope guide cylinder 101 is stable, the output pressure provided by the hydraulic system is constant, and the pressure of the piston rod of the rope guide cylinder 101 is stable during the extension and retraction process, thereby ensuring the stability and operability of the rope guide cylinder 101 and avoiding adverse effects caused by different stress states and working states of the rope guide cylinder 101. As a result, the safety, stability and reliability are higher.

[0035] In some embodiments, Figure 1 As shown, the hydraulic system of the present application further includes a second control valve 107 . The second control valve 107 is disposed on the fifth pipeline 113 and is located between the first pipeline 109 and the overflow valve 104 .

[0036] Therefore, during the emergency release of the towing winch, when the wire rope on the towing winch is quickly pulled out of the drum, the roller assembly 203 will be subjected to external thrust, and the relief valve 104 and the second control valve 107 can cooperate to enable the piston rod of the rope guide cylinder 101 to be passively retracted, thereby being safer and more reliable.

[0037] Furthermore, if Figure 1As shown, the hydraulic system of the present application further includes: a one-way valve 108, which is arranged on the sixth pipeline 113, one end of the sixth pipeline 113 is connected to the second pipeline 110, and the other end of the sixth pipeline 113 is connected to the second pipeline 110 between the second control valve 107 and the relief valve 104. The liquid outlet of the one-way valve 108 corresponds to the second pipeline 110, that is, the oil can only flow to the second pipeline 110 through the one-way valve 108.

[0038] That is to say, during the emergency release of the towing machine, when the relief valve 104 cooperates with the solenoid valve to make the piston rod of the rope guide cylinder 101 passively retract, the rodless chamber of the rope guide cylinder 101 can replenish oil to the rod chamber through the sixth pipeline 113 and the one-way valve 108, which can prevent the rod chamber of the rope guide cylinder 101 from being sucked empty, and avoid the lack of oil supply to the rod chamber of the rope guide cylinder 101, resulting in negative pressure and air inhalation, which affects the normal operation and stability of the hydraulic system. In this way, the safety, stability and reliability of the hydraulic system are improved.

[0039] In some embodiments, the second control valve 107 is a hydraulic solenoid valve, such as a two-position two-way solenoid valve, which is disposed on the fifth pipeline 113. Thus, the opening and closing of the fifth pipeline 113 can be better controlled.

[0040] In some embodiments, the first control valve 103 is an electro-hydraulic proportional valve, such as a three-position four-way solenoid valve, one end of the two third pipelines 111 is respectively connected to the interface on one side of the three-position four-way solenoid valve, and one end of the two fourth pipelines 112 is respectively connected to the interface on the other side of the three-position four-way solenoid valve. In this way, the extension and retraction of the rope guide cylinder 101 can be better controlled.

[0041] In some embodiments, a displacement sensor (not shown) is provided on the rope guide cylinder 101. That is, the displacement sensor detects the telescopic position of the piston rod of the rope guide cylinder 101 in real time, and then controls the position of the roller assembly 203 in real time, and can adjust the position of the roller assembly 203 in real time according to the position of the wire rope pulled out by the towing machine drum. As a result, the operation is more convenient and faster, and the safety and reliability are higher.

[0042] Furthermore, the displacement sensor is a magnetostrictive displacement sensor. The magnetostrictive displacement sensor has the characteristics of long service life, strong environmental adaptability, high reliability, good safety, etc. Therefore, it is convenient to detect the position better. It can be understood by those skilled in the art that the displacement sensor includes but is not limited to a magnetostrictive displacement sensor, and may also be a potentiometer displacement sensor, a digital displacement sensor, a Hall displacement sensor, an electronic ruler displacement sensor, and other displacement sensors.

[0043] In some embodiments, Figure 1As shown, a first pressure measuring joint 114 is provided on the first pipeline 109, and a second pressure measuring joint 115 is provided on the second pipeline 110. When debugging the rope tensioner cylinder 101, the corresponding detection equipment is connected to the first pressure measuring joint 114 and the second pressure measuring joint 115 respectively, and then the rope tensioner cylinder 101 is pressure tested, etc. Thus, the operation is more convenient and quick.

[0044] In summary, the towing machine of the present application can open and close the hydraulic system of the rope guide, and the piston rod of the rope guide cylinder 101 can be controlled to extend and retract through the first control valve 103 and the oil pump of the hydraulic station. For example, the extension direction and extension speed of the piston rod of the rope guide cylinder 101 can be controlled, so as to facilitate the adjustment of the distance between the two roller assemblies 203, so that wire rope accessories of different sizes can pass through the two roller assemblies 203. When the roller assembly 203 is subjected to the allowed lateral force, the lateral force will act on the piston rod of the rope guide cylinder 101, and the lateral force can be balanced by the balance valve 102 to ensure that the piston rod of the rope guide cylinder 101 does not move, so that the roller assembly 203 remains stable. If the lateral force exceeds the allowed range, the piston rod of the rope guide cylinder 101 is retracted through the balance valve 102, thereby avoiding damage to the equipment due to excessive lateral force. When the load or working state of the rope guide cylinder 101 changes, the pressure compensator 106 and the shuttle valve 105 cooperate to automatically adjust the system pressure, so that the pressure of the rope guide cylinder 101 is stable, ensuring the constant output pressure provided by the hydraulic system, ensuring the pressure of the piston rod of the rope guide cylinder 101 is stable during the extension and retraction process, ensuring the stability and operability of the rope guide cylinder 101, and avoiding adverse effects due to the different stress states and working states of the rope guide cylinder 101. During the emergency release of the towing winch, when the wire rope on the towing winch is quickly pulled out of the drum, the roller assembly 203 will be subjected to external thrust, and the relief valve 104 and the second control valve 107 cooperate to enable the piston rod of the rope guide cylinder 101 to passively retract, and through the sixth pipeline 113 and the one-way valve 108, the rodless chamber of the rope guide cylinder 101 can replenish oil to the rod chamber, which can prevent the rod chamber of the rope guide cylinder 101 from being sucked empty, and avoid the lack of oil supply to the rod chamber of the rope guide cylinder 101, resulting in negative pressure and air inhalation, which affects the normal operation and stability of the hydraulic system. In addition, the displacement sensor is used to detect the telescopic position of the piston rod of the rope-arranging device cylinder 101 in real time, and then the position of the roller assembly 203 is controlled in real time. The position of the roller assembly 203 can be adjusted in real time according to the position of the wire rope pulled out by the towing machine drum; through the first pressure measuring joint 114 on the first pipeline 109 and the second pressure measuring joint 115 on the second pipeline 110, it is also convenient to connect with the corresponding detection equipment. Therefore, compared with the traditional mechanical rope-arranging device, the hydraulic system of the rope-arranging device of the towing machine of the present application can open and close, which not only has a large driving force, high precision, convenient and fast operation, but also has high safety, stability and reliability, long service life, wide application range, and can meet higher and higher demands.

[0045] Based on the above-mentioned embodiments of the present application, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0046] The above are only some embodiments of the present application, which are only used to illustrate the technical solution of the present application, rather than to limit it. It should be understood that, for those skilled in the art, without departing from the creative concept of the present application, it is possible to improve or replace it according to the above description, and all these improvements and replacements should belong to the protection scope of the claims attached to the present application. In this case, all details can be replaced by equivalent elements, and the materials, shapes and sizes can also be arbitrary.

Claims

1. A hydraulic system for an openable and closable rope guide of a towing winch, characterized in that: include: Rope guide cylinder, balance valve, first control valve, relief valve and hydraulic station; Wherein, one side of the balancing valve is connected to the rodless chamber of the rope drawer cylinder through the first pipeline and is connected to the rod chamber of the rope drawer cylinder through the second pipeline, the other side of the balancing valve is respectively connected to one side of the first control valve through two third pipelines, an oil pump and an oil tank are provided on the hydraulic station, and the other side of the first control valve is respectively connected to the oil pump and the oil tank through two fourth pipelines; The overflow valve is arranged on a fifth pipeline, one end of the fifth pipeline is connected to the first pipeline, and the other end of the fifth pipeline is connected to the fourth pipeline connected to the oil tank.

2. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 1, characterized in that: Also includes: a shuttle valve, one end of which is connected to one of the third pipelines, and the other end of which is connected to another of the third pipelines; A pressure compensator is provided on the fourth pipeline connected to the oil pump, and the pressure compensator is connected to the middle part of the shuttle valve through the pipeline.

3. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 1, characterized in that: Also includes: A second control valve is disposed on the fifth pipeline and located between the first pipeline and the overflow valve.

4. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 3, characterized in that: Also includes: A one-way valve is arranged on the sixth pipeline, one end of the sixth pipeline is connected to the second pipeline, the other end of the sixth pipeline is connected to the second pipeline between the second control valve and the overflow valve, and the liquid outlet of the one-way valve corresponds to the second pipeline.

5. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 3, characterized in that: The second control valve is a hydraulic solenoid valve.

6. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 1, characterized in that: The first control valve is an electro-hydraulic proportional valve.

7. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 1, characterized in that: A displacement sensor is arranged on the rope arrangement device oil cylinder.

8. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 7, characterized in that: The displacement sensor is a magnetostrictive displacement sensor.

9. The hydraulic system of the openable and closable rope guide of a towing winch according to claim 1, characterized in that: The first pipeline is provided with a first pressure measuring joint.

10. The hydraulic system of the openable and closable rope guide of the towing winch according to claim 9, characterized in that: The second pipeline is provided with a second pressure measuring joint.

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