A synchronous hydraulic cylinder control system and regulating device

Abstract

This application relates to a synchronous hydraulic cylinder control system and adjusting device. The synchronous hydraulic cylinder control system includes: at least three hydraulic cylinders, a main inlet oil circuit and a main return oil circuit. One end of at least two of the hydraulic cylinders is connected in parallel to port A of a solenoid directional valve through a first oil circuit, and the other end of at least two of the hydraulic cylinders is connected in parallel to port B of the solenoid directional valve through a second oil circuit. One end of another hydraulic cylinder is connected to port A of the solenoid directional valve through a third oil circuit, and the other end of the third hydraulic cylinder is connected to port B of the solenoid directional valve through a fourth oil circuit. The third oil circuit is equipped with a first solenoid ball valve, and the fourth oil circuit is equipped with a second solenoid ball valve. The main inlet oil circuit is connected to port P of the solenoid directional valve, and the main return oil circuit is connected to port T of the solenoid directional valve.

Description

Technical Field

[0001] This application relates to the field of hydraulic control, specifically to a synchronous cylinder control system and adjustment device. Background Technology

[0002] Currently, hydraulic cylinders are widely used in industries such as environmental protection, offshore oil, and engineering machinery assembly. Two, four, or more cylinders move simultaneously to lift a large platform to complete the smooth lifting and lowering process of the platform.

[0003] In related technologies, hydraulic systems often employ multiple hydraulic cylinders working synchronously, making it impossible to adjust the stroke of individual cylinders to allow multiple sets of cylinders to move in stages according to predetermined distance differences.

[0004] Therefore, it is necessary to design a new synchronous cylinder control system to overcome the above problems. Utility Model Content

[0005] This application provides a synchronous hydraulic cylinder control system and adjustment device, which can solve the technical problem in related technologies where hydraulic systems often use multiple hydraulic cylinders to work synchronously, making it impossible to adjust the stroke of some of the cylinders and make multiple sets of cylinders move in stages according to a predetermined distance difference.

[0006] In a first aspect, embodiments of this application provide a synchronous hydraulic cylinder control system, comprising: at least three hydraulic cylinders, a main inlet oil circuit and a main return oil circuit; one end of at least two of the hydraulic cylinders is connected in parallel to port A of a solenoid directional valve via a first oil circuit; the other end of at least two of the hydraulic cylinders is connected in parallel to port B of the solenoid directional valve via a second oil circuit; one end of another hydraulic cylinder is connected to port A of the solenoid directional valve via a third oil circuit; and the other end of another hydraulic cylinder is connected to port B of the solenoid directional valve via a fourth oil circuit; wherein the third oil circuit is equipped with a first solenoid ball valve and the fourth oil circuit is equipped with a second solenoid ball valve; the main inlet oil circuit is connected to port P of the solenoid directional valve, and the main return oil circuit is connected to port T of the solenoid directional valve.

[0007] In conjunction with the first aspect, in one embodiment, at least three of the hydraulic cylinders are connected in parallel to a synchronous motor, and the synchronous motor is connected in series to port A of the electromagnetic directional valve.

[0008] In conjunction with the first aspect, in one embodiment, the synchronous motor is connected to the B port of the electromagnetic directional valve via a fifth oil circuit, and the fifth oil circuit is equipped with a third electromagnetic ball valve.

[0009] In conjunction with the first aspect, in one embodiment, the inlet of the third electromagnetic ball valve is connected to the inlet of the first electromagnetic ball valve, and the outlet of the third electromagnetic ball valve is connected to the outlet of the second electromagnetic ball valve.

[0010] In conjunction with the first aspect, in one embodiment, the B port of the electromagnetic directional valve is connected to the T port of the electromagnetic directional valve through a sixth oil circuit, and the sixth oil circuit is provided with a fourth electromagnetic ball valve and a one-way throttle valve.

[0011] In conjunction with the first aspect, in one embodiment, the inlet of the fourth electromagnetic ball valve is connected to the inlet of the first electromagnetic ball valve.

[0012] In conjunction with the first aspect, in one embodiment, the electromagnetic directional valve is configured as a three-position four-way electromagnetic valve.

[0013] In conjunction with the first aspect, in one embodiment, the second oil circuit is provided with an overflow valve and a pressure gauge.

[0014] Secondly, embodiments of this application provide an adjustment device for a synchronous hydraulic cylinder, which includes the aforementioned synchronous hydraulic cylinder control system.

[0015] In conjunction with the second aspect, in one embodiment, the regulating device further includes an oil tank and a motor, the oil tank being connected to the motor via a pipeline, and the motor being connected to the synchronous cylinder control system via a pipeline.

[0016] The beneficial effects of the technical solutions provided in this application include:

[0017] By installing a first solenoid ball valve in a third oil circuit connected to the A port of a solenoid directional valve and a second solenoid ball valve in a fourth oil circuit connected to the B port of the solenoid directional valve, at least two oil cylinders can move in stages with another oil cylinder. This solves the technical problem in related technologies where hydraulic systems often use multiple hydraulic cylinders working synchronously, making it impossible to adjust the stroke of some of the cylinders and enable multiple sets of cylinders to move in stages according to a predetermined distance difference. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a synchronous hydraulic cylinder control system provided in an embodiment of this application.

[0020] In the diagram: 1. Hydraulic cylinder; 2. Solenoid directional valve; 3. First solenoid ball valve; 4. Second solenoid ball valve; 5. Synchronous motor; 6. Third solenoid ball valve; 7. Fourth solenoid ball valve; 8. One-way throttle valve. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0022] This application provides a synchronous cylinder control system and adjustment device, which can solve the technical problem that hydraulic systems often use multiple hydraulic cylinders to work synchronously, making it impossible to adjust the stroke of some of the cylinders and make multiple sets of cylinders move in stages according to a predetermined distance difference.

[0023] See Figure 1 As shown in the figure, this application provides a synchronous hydraulic cylinder control system, which includes: at least three hydraulic cylinders 1, a main inlet oil circuit and a main return oil circuit. One end of at least two of the hydraulic cylinders 1 is connected in parallel to the A port of the electromagnetic directional valve 2 through a first oil circuit, and the other end of at least two of the hydraulic cylinders 1 is connected in parallel to the B port of the electromagnetic directional valve 2 through a second oil circuit. One end of another hydraulic cylinder 1 is connected to the A port of the electromagnetic directional valve 2 through a third oil circuit, and the other end of the other hydraulic cylinder 1 is connected to the B port of the electromagnetic directional valve 2 through a fourth oil circuit. The third oil circuit is provided with a first electromagnetic ball valve 3, and the fourth oil circuit is provided with a second electromagnetic ball valve 4. The main inlet oil circuit is connected to the P port of the electromagnetic directional valve 2, and the main return oil circuit is connected to the T port of the electromagnetic directional valve 2.

[0024] In this embodiment, exemplaryly, at least three hydraulic cylinders 1 are configured as four hydraulic cylinders 1. When the YA2 of the solenoid directional valve 2 is energized, and the first solenoid ball valve 3 and the second solenoid ball valve 4 are energized, the four hydraulic cylinders 1 rise synchronously. When the YA1 of the solenoid directional valve 2 is energized, and the first solenoid ball valve 3 and the second solenoid ball valve 4 are energized, the four hydraulic cylinders 1 descend synchronously. When the YA2 of the solenoid directional valve 2 is energized, and the first solenoid ball valve 3 and the second solenoid ball valve 4 are de-energized, three hydraulic cylinders 1 rise synchronously, and the other hydraulic cylinder 1 pauses. When the YA1 of the solenoid directional valve 2 is energized, and the first solenoid ball valve 3 and the second solenoid ball valve 4 are de-energized, three hydraulic cylinders 1 descend synchronously, and the other hydraulic cylinder 1 pauses. By controlling the opening and closing of the first solenoid ball valve 3 and the second solenoid ball valve 4, the raising and lowering of the other hydraulic cylinder 1 is controlled and asynchronous with the raising and lowering of the three hydraulic cylinders 1, realizing the graded movement of at least two hydraulic cylinders 1 and the other hydraulic cylinder 1.

[0025] This embodiment solves the technical problem in related technologies where hydraulic systems often use multiple hydraulic cylinders working synchronously, making it impossible to adjust the stroke of some of the cylinders and make multiple sets of cylinders move in stages according to a predetermined distance difference. By setting a first electromagnetic ball valve 3 in a third oil circuit connected to the A oil port of the electromagnetic reversing valve 2 in a third oil circuit, and setting a second electromagnetic ball valve 4 in a fourth oil circuit connected to the B oil port of the electromagnetic reversing valve 2, at least two cylinders 1 can move in stages with another cylinder 1.

[0026] Further, see Figure 1 As shown, in some embodiments, at least three of the hydraulic cylinders 1 are connected in parallel to the synchronous motor 5, and the synchronous motor 5 is connected in series to the A port of the electromagnetic reversing valve 2.

[0027] In this embodiment, the synchronous motor 5 is exemplary, configured as a four-way synchronous motor. The oil outlet of each synchronous motor is connected to the rod chamber of the corresponding hydraulic cylinder 1. The oil output and oil inlet of each synchronous motor are the same, ensuring that multiple hydraulic cylinders 1 rise and fall synchronously. The pressure oil inlet of the rodless chamber of the hydraulic cylinder 1 rises, and the pressure oil inlet of the rod chamber of the hydraulic cylinder 1 falls. The oil inlet of each synchronous motor is connected to the A port of the electromagnetic reversing valve 2.

[0028] Further, see Figure 1 As shown, in some embodiments, the synchronous motor 5 is connected to the B port of the electromagnetic directional valve 2 via a fifth oil circuit, and the fifth oil circuit is equipped with a third electromagnetic ball valve 6.

[0029] In this embodiment, when the YA1 of the electromagnetic reversing valve 2 and the third electromagnetic ball valve 6 are energized, and the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4 are de-energized, the three hydraulic cylinders 1 descend synchronously, and the other hydraulic cylinder 1 pauses. The oil outlet of one synchronous motor corresponding to the other hydraulic cylinder 1 exits through the fifth oil circuit, ensuring that the four oil outlets of the synchronous motor 5 exit synchronously. When the YA1 of the electromagnetic reversing valve 2, the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4 are energized, and the third electromagnetic ball valve 6 is de-energized, the four hydraulic cylinders 1 descend synchronously. This allows the four hydraulic cylinders 1 to descend synchronously to a position and then stop, and then the three hydraulic cylinders 1 descend synchronously. This avoids the oil outlet of the synchronous motor 5 being directly connected to multiple hydraulic cylinders 1, which would prevent the multiple hydraulic cylinders 1 from descending in stages.

[0030] Further, see Figure 1 As shown, in some embodiments, the inlet of the third electromagnetic ball valve 6 is connected to the inlet of the first electromagnetic ball valve 3, and the outlet of the third electromagnetic ball valve 6 is connected to the outlet of the second electromagnetic ball valve 4.

[0031] In this embodiment, when the YA1 of the electromagnetic reversing valve 2 and the third electromagnetic ball valve 6 are energized, and the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4 are de-energized, the oil outlet of the synchronous motor 5 outputs oil through the third oil circuit and the fifth oil circuit.

[0032] Further, see Figure 1 As shown, in some embodiments, the B port of the electromagnetic reversing valve 2 is connected to the T port of the electromagnetic reversing valve 2 through a sixth oil circuit, and the sixth oil circuit is provided with a fourth electromagnetic ball valve 7 and a one-way throttle valve 8.

[0033] In this embodiment, when the YA2 of the electromagnetic reversing valve 2, the third electromagnetic ball valve 6, and the fourth electromagnetic ball valve 7 are energized, and the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4 are de-energized, three of the hydraulic cylinders 1 rise synchronously, while the other hydraulic cylinder 1 pauses. Oil is introduced into the outlet of one synchronous motor corresponding to the other hydraulic cylinder 1 through the fifth oil circuit, ensuring that the four outlets of the synchronous motor 5 receive oil synchronously. During the asynchronous rising process, the oil inflow into the rodless chamber of the hydraulic cylinder 1 is greater than the oil return flow into its rod chamber, and the oil flow from the rod chambers of the three hydraulic cylinders 1 into each corresponding synchronous motor is less than that of the other cylinder 1. The oil volume in the rodless chamber of one of the hydraulic cylinders 1 is reduced, and excess oil is discharged through the sixth oil passage. When the YA2 of the solenoid directional valve 2, the first solenoid ball valve 3, and the second solenoid ball valve 4 are energized, and the third solenoid ball valve 6 and the fourth solenoid ball valve 7 are de-energized, the four hydraulic cylinders 1 rise synchronously. This allows three of the hydraulic cylinders 1 to rise synchronously to a position and then stop, followed by the synchronous rise of all four hydraulic cylinders 1. The one-way throttle valve 8 is used to regulate the flow rate of the sixth oil passage to prevent the oil outlet of the synchronous motor 5 from being directly connected to multiple hydraulic cylinders 1, which would prevent the multiple hydraulic cylinders 1 from rising in stages.

[0034] Further, see Figure 1 As shown, in some embodiments, the inlet of the fourth solenoid ball valve 7 is connected to the inlet of the first solenoid ball valve 3.

[0035] In this embodiment, when the YA2 of the electromagnetic reversing valve 2, the third electromagnetic ball valve 6, and the fourth electromagnetic ball valve 7 are energized, and the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4 are de-energized, the oil outlet of the synchronous motor 5 returns oil through the third oil circuit and the fifth oil circuit, and the B oil port of the electromagnetic reversing valve 2 is connected to the T oil port of the electromagnetic reversing valve 2 through the fifth oil circuit and the sixth oil circuit.

[0036] Further, see Figure 1 As shown, in some embodiments, the electromagnetic reversing valve 2 is configured as a three-position four-way electromagnetic valve.

[0037] In this embodiment, the A port of the electromagnetic reversing valve 2 is connected to the oil inlet of the synchronous motor 5, and the B port of the electromagnetic reversing valve 2 is connected to the rodless chamber of the cylinder 1.

[0038] Furthermore, in some embodiments, the second oil circuit is equipped with an overflow valve and a pressure gauge.

[0039] In this embodiment, the pressure gauge is used to display the pressure in the oil circuit in real time. When the pressure in the oil circuit exceeds the set pressure of the relief valve, the relief valve is used to overflow the hydraulic oil in the oil circuit to ensure that the oil circuit pressure does not exceed the set pressure of the relief valve, thereby protecting the multiple oil cylinders 1 and other hydraulic components.

[0040] This application provides an adjustment device for a synchronous hydraulic cylinder, which includes the aforementioned synchronous hydraulic cylinder control system.

[0041] In this embodiment, the adjusting device of the synchronous cylinder includes the synchronous cylinder control system. One of the cylinders 1 is provided with a first electromagnetic ball valve 3 in a third oil circuit connected to the A oil port of the electromagnetic reversing valve 2, and a second electromagnetic ball valve 4 in a fourth oil circuit connected to the B oil port of the electromagnetic reversing valve 2. By controlling the opening and closing of the first electromagnetic ball valve 3 and the second electromagnetic ball valve 4, the lifting and lowering of one cylinder 1 is controlled and is asynchronous with the lifting and lowering of the other three cylinders 1, so as to realize the graded movement of at least two cylinders 1 and another cylinder 1.

[0042] Furthermore, in some embodiments, the regulating device further includes an oil tank and a motor, the oil tank being connected to the motor via a pipeline, and the motor being connected to the synchronous cylinder control system via a pipeline.

[0043] In this embodiment, the oil tank is connected to the T port of the electromagnetic directional valve 2 via the main return oil pipe, the oil tank is connected to the P port of the electromagnetic directional valve 2 via the main inlet oil pipe, and the motor is connected to the synchronous cylinder control system via a hydraulic pump.

[0044] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0045] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A synchronous hydraulic cylinder control system, characterized in that, It includes: At least three hydraulic cylinders (1), one end of at least two of the hydraulic cylinders (1) is connected in parallel to port A of the solenoid directional valve (2) through a first oil circuit, and the other end of at least two of the hydraulic cylinders (1) is connected in parallel to port B of the solenoid directional valve (2) through a second oil circuit. One end of another cylinder (1) is connected to the A port of the electromagnetic reversing valve (2) through a third oil circuit, and the other end of another cylinder (1) is connected to the B port of the electromagnetic reversing valve (2) through a fourth oil circuit. The third oil circuit is equipped with a first electromagnetic ball valve (3), and the fourth oil circuit is equipped with a second electromagnetic ball valve (4). The main inlet oil circuit and the main return oil circuit are connected to the P port of the solenoid directional valve (2) and the main return oil circuit is connected to the T port of the solenoid directional valve (2).

2. The synchronous hydraulic cylinder control system as described in claim 1, characterized in that, At least three of the hydraulic cylinders (1) are connected in parallel to a synchronous motor (5), and the synchronous motor (5) is connected in series to the A port of the electromagnetic reversing valve (2).

3. The synchronous hydraulic cylinder control system as described in claim 2, characterized in that, The synchronous motor (5) is connected to the B port of the electromagnetic reversing valve (2) through the fifth oil circuit, and the fifth oil circuit is equipped with a third electromagnetic ball valve (6).

4. The synchronous hydraulic cylinder control system as described in claim 3, characterized in that, The inlet of the third electromagnetic ball valve (6) is connected to the inlet of the first electromagnetic ball valve (3), and the outlet of the third electromagnetic ball valve (6) is connected to the outlet of the second electromagnetic ball valve (4).

5. The synchronous hydraulic cylinder control system as described in claim 2, characterized in that, The B port of the electromagnetic reversing valve (2) is connected to the T port of the electromagnetic reversing valve (2) through the sixth oil circuit. The sixth oil circuit is equipped with a fourth electromagnetic ball valve (7) and a one-way throttle valve (8).

6. The synchronous hydraulic cylinder control system as described in claim 5, characterized in that, The inlet of the fourth electromagnetic ball valve (7) is connected to the inlet of the first electromagnetic ball valve (3).

7. The synchronous cylinder control system as described in claim 1, characterized in that, The electromagnetic reversing valve (2) is configured as a three-position four-way electromagnetic valve.

8. The synchronous hydraulic cylinder control system as described in claim 1, characterized in that, The second oil circuit is equipped with an overflow valve and a pressure gauge.

9. An adjustment device for a synchronous hydraulic cylinder, characterized in that, It includes the synchronous cylinder control system as described in any one of claims 1-8.

10. The adjusting device as described in claim 9, characterized in that, The regulating device also includes an oil tank and a motor. The oil tank is connected to the motor via a pipeline, and the motor is connected to the synchronous cylinder control system via a pipeline.

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