Method for commissioning and detection device for a synchronizing cylinder

Abstract

This disclosure provides a debugging method and testing device for a synchronizer cylinder, belonging to the field of hydraulic control technology. The debugging method includes: installing a testing device on the synchronizer cylinder, the testing device comprising: a protective cylinder, a scale, and a pointer; the protective cylinder being connected to the synchronizer cylinder; the pointer being located at one end of the piston rod; the outer wall of the protective cylinder having a transparent area exposing the pointer; the scale being located on the outer wall of the protective cylinder; the pointer facing the scale; when the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale; connecting each actuator cylinder to the synchronizer cylinder; injecting hydraulic oil into the oil port of the synchronizer cylinder; and controlling the piston rod to extend and retract between its minimum and maximum strokes; if the pointer points to the 0 mark on the scale when the piston rod extends and retracts to its minimum stroke, and the pointer points to the maximum mark on the scale when the piston rod extends and retracts to its maximum stroke, then the debugging is deemed successful. This disclosure can improve the debugging efficiency of synchronizer cylinders.

Description

Technical Field

[0001] This disclosure relates to the field of hydraulic control technology, and in particular to a method for debugging and testing a synchronizer cylinder. Background Technology

[0002] A synchronizing cylinder is a device used to control the movement of a piston. It consists of a cylinder body, a piston, and seals. The cylinder body is a container that holds the piston and the pressure medium. The piston is a cylindrical part that moves within the cylinder body. Seals prevent leakage of the pressure medium. Synchronizing cylinders are typically used in conjunction with multiple actuator cylinders. Their working principle involves transmitting pressure to the piston within the cylinder, thereby controlling its movement. This allows the oil in the synchronizing cylinder to enter the different actuator cylinders synchronously under the piston's thrust, thus controlling the synchronized action of each actuator cylinder. A large eight-unit synchronizing cylinder is a type of synchronizing cylinder configured with eight actuator cylinders. The cylinder body of this type of synchronizing cylinder is longer to accommodate the simultaneous driving of all eight actuator cylinders.

[0003] In related technologies, when debugging a large eight-unit synchronous cylinder, oil is injected into the synchronous cylinder to drive the piston rod inside the cylinder to extend and retract. At the same time, technicians need to use measuring tools to detect the stroke of the piston rod at the end of the piston rod.

[0004] However, the method used by technicians to measure the piston rod stroke with measuring tools such as rulers results in a large deviation between the measured data and the actual value, which is not conducive to the debugging of the synchronizer cylinder. Summary of the Invention

[0005] This disclosure provides a method and apparatus for debugging and testing a synchronizing cylinder, which can improve the debugging efficiency of the synchronizing cylinder. The technical solution is as follows:

[0006] This disclosure provides a method for debugging a synchronizing cylinder. The debugging method includes: installing a detection device on the front end cover of the synchronizing cylinder; the detection device includes a protective cylinder, a scale, and a pointer; one end of the protective cylinder is coaxially connected to the front end cover of the synchronizing cylinder, and the protective cylinder is fitted over the piston rod of the synchronizing cylinder; the pointer is located on the end face of the piston rod, and the length direction of the pointer is perpendicular to the axial direction of the piston rod; the outer wall of the protective cylinder has a transparent area exposing the pointer; the scale is located on the outer wall of the protective cylinder, and is located on one side of the transparent area; the length direction of the scale is perpendicular to the axial direction of the piston rod. With the pointer parallel to the axis of the piston rod and its end pointing towards the scale, when the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale. Connect each actuator to the synchronizing cylinder, inject hydraulic oil into the oil port of the synchronizing cylinder, and control the piston rod to extend and retract between its minimum and maximum stroke. If the pointer points to the 0 mark on the scale when the piston rod extends and retracts to its minimum stroke, and points to the maximum mark on the scale when the piston rod extends and retracts to its maximum stroke, then the adjustment is considered successful.

[0007] In one implementation of this disclosure, connecting each actuator cylinder to the synchronization cylinder, injecting hydraulic oil into the oil port of the synchronization cylinder, and controlling the piston rod to extend and retract between the minimum and maximum strokes includes: disconnecting each actuator cylinder from the load, injecting hydraulic oil into the oil port of the synchronization cylinder, and controlling the piston rod to extend and retract between the minimum and maximum strokes; if the piston rod extends and retracts to the minimum stroke, the pointer points to the 0 mark of the scale, and when the piston rod extends and retracts to the maximum stroke, the pointer points to the maximum mark of the scale, then it is determined that the calibration is qualified when each actuator cylinder is unloaded.

[0008] In another implementation of this disclosure, the synchronizing cylinder is supplied with oil via a proportional directional valve. When the proportional directional valve receives a control signal for a first directional signal interval, it controls the piston rod of the synchronizing cylinder to extend. When the proportional directional valve receives a control signal for a second directional signal interval, it controls the piston rod of the synchronizing cylinder to retract. The lower limit of the first directional signal interval is equal to the upper limit of the second directional signal interval. Connecting each actuator cylinder to the synchronizing cylinder and injecting hydraulic oil into the oil port of the synchronizing cylinder, controlling the piston rod to extend and retract between the minimum and maximum stroke, includes: connecting each actuator cylinder to the load and inputting a first control signal to the proportional directional valve. The first control signal is... Within the first reversing signal range; if the piston rod does not extend, a set value is accumulated based on the first control signal and input to the proportional reversing valve until the piston rod extends at a constant speed, and the current control signal of the proportional reversing valve is determined as the first stable signal; the control signal of the proportional reversing valve is replaced with a second control signal, the second control signal being located within the second reversing signal range; if the piston rod does not retract, the set value is accumulated and subtracted based on the second control signal and input to the proportional reversing valve, causing the piston rod to retract at a constant speed until the pointer points to the 0 mark of the scale, and the current control signal of the proportional reversing valve is determined as the second stable signal.

[0009] In another implementation of the present disclosure, the range of the first commutation signal interval is 12mA to 20mA, the range of the second commutation signal interval is 4mA to 12mA, and the range of the set value is 0.5mA to 1mA.

[0010] In another implementation of this disclosure, if the piston rod does not retract, the set value is subtracted from the second control signal to retract the piston rod at a constant speed until the pointer points to the 0 mark of the scale. The method further includes: inputting the first stable signal to the proportional directional valve to extend the piston rod at a constant speed until the pointer points to the maximum mark of the scale; and replacing the control signal of the proportional directional valve with the second stable signal to retract the piston rod at a constant speed until the pointer points to the 0 mark of the scale.

[0011] In another implementation of this disclosure, the debugging method further includes: inputting the first stable signal to the proportional directional valve, causing the pointer to point to any position between the 0 mark and the maximum mark of the scale; inputting the lower limit value of the first reversing signal range to the proportional directional valve; and closing the proportional directional valve after the piston rod stops moving; if the pointer remains stable, it is determined that the synchronous cylinder is successfully debugged at a constant speed when each of the actuators is under load.

[0012] In another implementation of this disclosure, if the pointer remains stable, and it is determined that the synchronous cylinder is under load and has passed the uniform speed adjustment, the method further includes: inputting a first acceleration signal to the proportional directional valve to extend the piston rod until the pointer points to the maximum scale of the scale, wherein the first acceleration signal is greater than the first stable signal; replacing the control signal of the proportional directional valve with a second acceleration signal to retract the piston rod until the pointer points to the 0 scale of the scale, wherein the second acceleration signal is less than the second stable signal.

[0013] In another implementation of this disclosure, the control signal of the proportional directional valve is replaced with a second acceleration signal to retract the piston rod until the pointer points to the 0 mark on the scale. The method further includes: controlling the pressure relief valve on the oil line of the rodless chamber of each actuator to open for 3 to 8 seconds and then close.

[0014] This disclosure provides a detection device for a synchronizing cylinder, applicable to the synchronizing cylinder debugging method described above. The device includes a protective cylinder, a scale, and a pointer. One end of the protective cylinder is coaxially connected to the front end cover of the synchronizing cylinder, and the protective cylinder is fitted over the piston rod of the synchronizing cylinder. The pointer is located on the end face of the piston rod, and the length direction of the pointer is perpendicular to the axial direction of the piston rod. The outer wall of the protective cylinder has a transparent area exposing the pointer. The scale is located on the outer wall of the protective cylinder, on one side of the transparent area, and the length direction of the scale is parallel to the axial direction of the piston rod. The end of the pointer faces the scale. When the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale.

[0015] In another implementation of this disclosure, the detection device further includes a protective end cap located at the end of the protective cylinder away from the synchronizing cylinder.

[0016] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0017] The debugging method for the synchronizing cylinder provided in this embodiment first involves installing a detection device at the end of the synchronizing cylinder. One end of the protective sleeve of this detection device is coaxially connected to the front end of the synchronizing cylinder. A scale parallel to the axial direction of the piston rod is provided on one side of the transparent area of ​​the protective sleeve. A pointer is also provided at the end of the piston rod of the synchronizing cylinder, pointing to the scale through the transparent area. Thus, during the extension and retraction of the piston rod, the pointer can point to different positions on the scale, allowing for rapid observation and detection of the piston rod's stroke. Next, each actuator is connected to the synchronizing cylinder, and hydraulic oil is injected into the oil port of the synchronizing cylinder to control the extension and retraction of the piston rod between its minimum and maximum stroke. When the piston rod extends to its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod extends to its maximum stroke, the pointer points to the maximum mark on the scale, indicating successful debugging. Conversely, failure indicates unsuccessful debugging. Since the piston rod stroke does not require manual measurement with a ruler during debugging, but is directly observed through the transparent area of ​​the protective sleeve to determine the positional relationship between the pointer and the scale, the piston rod stroke is thus determined. This effectively reduces errors caused by manual measurement, thus ensuring the accuracy of piston rod stroke detection. This allows for the determination of whether the piston rod of the synchronizing cylinder accurately extends and retracts to the minimum and maximum strokes during the extension and retraction process. This avoids misjudgments during synchronizing cylinder debugging, thereby improving the accuracy and efficiency of synchronizing cylinder debugging. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, 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 disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart of a debugging method for a synchronizing cylinder provided in an embodiment of this disclosure;

[0020] Figure 2 This is a schematic diagram of the structure of a detection device provided in an embodiment of this disclosure;

[0021] Figure 3 This is a flowchart of another method for debugging a synchronizing cylinder provided in this embodiment.

[0022] The markings in the diagram are explained as follows:

[0023] 10. Protective cylinder; 11. Scale; 12. Pointer; 13. Protective end cap; 14. Dust cover; 15. Proximity switch;

[0024] 20. Synchronizing cylinder; 21. Piston rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0026] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” “top,” and “bottom,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0027] Figure 1 This is a flowchart illustrating a debugging method for a synchronizing cylinder provided in an embodiment of this disclosure. Figure 1 As shown, the debugging method includes:

[0028] Step 101: Install the detection device on the front cover of the synchronizing cylinder.

[0029] The front cover of the synchronizing cylinder is located at the end where the piston rod of the synchronizing cylinder extends out of the housing of the synchronizing cylinder.

[0030] Figure 2 This is a schematic diagram of the structure of a detection device provided in an embodiment of this disclosure. Figure 2 As shown, the detection device includes a protective cylinder 10, a scale 11 and a pointer 12. One end of the protective cylinder 10 is coaxially connected to the front end cover of the synchronizing cylinder 20, and the protective cylinder 10 is fitted outside the piston rod 21 of the synchronizing cylinder 20.

[0031] The diameter of the protective cylinder 10 is larger than the diameter of the piston rod 21, so that the piston rod 21 will not rub against the inner wall of the protective cylinder 10 during the extension and retraction process.

[0032] For example, the protective cylinder can be a metal cylinder with good strength, which can improve the reliability of the protective cylinder. Furthermore, by shielding the cylinder, dust and impurities in the external environment can be isolated, preventing the piston rod from being damaged by collisions with impurities during extension and retraction, thereby improving the reliability of the synchronizing cylinder.

[0033] like Figure 2 As shown, the pointer is located at the end face of the piston rod, and the length direction of the pointer is perpendicular to the axis of the piston rod.

[0034] The outer wall of the protective cylinder has a transparent area that exposes the pointer. The scale is located on the outer wall of the protective cylinder and on one side of the transparent area. The length direction of the scale is parallel to the axis of the piston rod, and the end of the pointer faces the scale.

[0035] For example, the transparent area on the protective cylinder can be an opening on the protective cylinder, and a transparent material is installed on the opening to form a viewing window. For example, the transparent material can be an acrylic sheet. This allows technicians to directly observe the positional relationship between the scale and the pointer through the viewing window of the protective cylinder, thereby determining the stroke of the piston rod.

[0036] For example, a threaded hole can be provided on the end face of the piston rod, and a through hole can be provided on the end of the pointer connected to the piston rod. When installing the pointer, a bolt is used to connect the pointer through the through hole and the threaded hole on the piston rod, thus fixing the pointer to the piston rod. Because of the bolted connection, the pointer's pointing direction can be flexibly adjusted, allowing for easy adjustment of the pointer's orientation to point to the scale for easy observation.

[0037] When the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale.

[0038] In some implementations of this disclosure, the synchronizing cylinder is not connected to any of the actuator cylinders when the scale is installed. When the piston rod extends or retracts to its minimum stroke, the position of the scale is adjusted so that the pointer is aligned with the 0 mark on the scale. When selecting the scale, a scale with the same maximum range as the piston rod's extension or retraction stroke can be chosen, so that when the piston rod extends or retracts to its maximum stroke, the pointer is aligned with the maximum range of the scale.

[0039] In other implementations of this disclosure, the scale 11 can be a steel stamp engraved on the outer wall of the protective cylinder 10. When the steel stamp is engraved on the protective cylinder, the synchronizing cylinder is not connected to any of the actuator cylinders. When the piston rod extends to its minimum stroke, the position indicated by the pointer on the protective cylinder is recorded; when the piston rod extends to its maximum stroke, the position indicated by the pointer on the protective cylinder is recorded again; based on the two recorded positions, a steel stamp is engraved on the outer wall of the protective cylinder.

[0040] Step 102: Connect each actuator cylinder to the synchronizing cylinder, inject hydraulic oil into the oil port of the synchronizing cylinder, and control the piston rod to extend and retract between the minimum stroke and the maximum stroke.

[0041] Step 103: If the pointer points to the 0 mark on the scale when the piston rod extends to its minimum stroke, and the pointer points to the maximum mark on the scale when the piston rod extends to its maximum stroke, then the adjustment is considered successful.

[0042] The debugging method for the synchronizing cylinder provided in this embodiment first involves installing a detection device at the end of the synchronizing cylinder. One end of the protective sleeve of this detection device is coaxially connected to the front end of the synchronizing cylinder. A scale parallel to the axial direction of the piston rod is provided on one side of the transparent area of ​​the protective sleeve. A pointer is also provided at the end of the piston rod of the synchronizing cylinder, pointing to the scale through the transparent area. Thus, during the extension and retraction of the piston rod, the pointer can point to different positions on the scale, allowing for rapid observation and detection of the piston rod's stroke. Next, each actuator is connected to the synchronizing cylinder, and hydraulic oil is injected into the oil port of the synchronizing cylinder to control the extension and retraction of the piston rod between its minimum and maximum stroke. When the piston rod extends to its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod extends to its maximum stroke, the pointer points to the maximum mark on the scale, indicating successful debugging. Conversely, failure indicates unsuccessful debugging. Since the piston rod stroke does not require manual measurement with a ruler during debugging, but is directly observed through the transparent area of ​​the protective sleeve to determine the positional relationship between the pointer and the scale, the piston rod stroke is thus determined. This effectively reduces errors caused by manual measurement, thus ensuring the accuracy of piston rod stroke detection. This allows for the determination of whether the piston rod of the synchronizing cylinder accurately extends and retracts to the minimum and maximum strokes during the extension and retraction process. This avoids misjudgments during synchronizing cylinder debugging, thereby improving the accuracy and efficiency of synchronizing cylinder debugging.

[0043] Figure 3 This is a flowchart of another method for debugging a synchronizing cylinder provided in an embodiment of this disclosure. For example... Figure 3 As shown, the debugging method includes:

[0044] Step 201: Install a detection device at the end of the synchronizing cylinder.

[0045] like Figure 2 As shown, the detection device includes a protective cylinder, a scale, and a pointer. One end of the protective cylinder is coaxially connected to the front end cover of the synchronizing cylinder, and the protective cylinder is fitted over the piston rod of the synchronizing cylinder.

[0046] For example, the protective tube may be an acrylic tube or a glass tube.

[0047] like Figure 2 As shown, the pointer is located at the end face of the piston rod, and the length direction of the pointer is perpendicular to the axis of the piston rod. The outer wall of the protective cylinder has a transparent area that exposes the pointer.

[0048] For example, the transparent area on the protective cylinder can be an opening on the protective cylinder, and a transparent material is installed on the opening to form a viewing window. For example, the transparent material can be acrylic.

[0049] like Figure 2 As shown, the scale is located on the outer wall of the protective cylinder and on one side of the transparent area. The length of the scale is parallel to the axis of the piston rod, and the end of the pointer is facing the scale.

[0050] When the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale; when the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale.

[0051] Step 202: Disconnect each actuator from the load, inject hydraulic oil into the oil port of the synchronizing cylinder, and control the piston rod to extend and retract between the minimum and maximum stroke.

[0052] Step 203: If the pointer points to the 0 mark on the scale when the piston rod extends to its minimum stroke, and the pointer points to the maximum mark on the scale when the piston rod extends to its maximum stroke, then the adjustment is considered successful when each actuator cylinder is unloaded.

[0053] During the commissioning process, the actuator cylinder is first disconnected from the load, i.e., it is run under zero load, to determine whether the synchronizing cylinder can drive the actuator cylinder to work normally without load.

[0054] When the piston rod extends to its minimum stroke and the pointer also points to the 0 mark on the scale, it indicates that the minimum stroke of the synchronizing cylinder's piston rod is consistent with the minimum stroke when the synchronizing cylinder is not connected to the actuator cylinder. When the piston rod extends to its maximum stroke and the pointer also points to the maximum mark on the scale, it indicates that the maximum stroke of the synchronizing cylinder's piston rod is consistent with the maximum stroke when the synchronizing cylinder is not connected to the actuator cylinder. Therefore, it can be determined that the extension and retraction stroke of the synchronizing cylinder is not affected after connecting to the actuator cylinder and the debugging is qualified.

[0055] When the piston rod extends to its minimum stroke and the pointer does not point to the 0 mark on the scale, it indicates that the minimum stroke of the synchronizing cylinder's piston rod is inconsistent with the minimum stroke when the synchronizing cylinder is not connected to the actuator cylinder. Alternatively, when the piston rod extends to its maximum stroke and the pointer does not point to the maximum mark on the scale, it indicates that the maximum stroke of the synchronizing cylinder's piston rod is inconsistent with the maximum stroke when the synchronizing cylinder is not connected to the actuator cylinder. Therefore, it can be determined that the extension and retraction stroke of the synchronizing cylinder is affected after connecting to the actuator cylinder, and the adjustment is unqualified.

[0056] If the debugging fails, it is necessary to check each cylinder of the synchronizing cylinder and each actuator cylinder for problems; after the repair is completed, step 202 is repeated until the debugging is successful.

[0057] Steps 202 to 203 may specifically include:

[0058] First, disconnect all actuators from the mechanical connection points, that is, disconnect the actuators from the load.

[0059] Then, begin the manual test and debugging of the synchronization cylinder circuit. Start the hydraulic station to supply pressurized oil to the control hydraulic valve platform of the synchronization cylinder. At this time, manually open the low-pressure filling valve of the synchronization cylinder.

[0060] Next, using, for example Figure 2 The detection device shown observes whether the piston rod of the synchronizing cylinder begins to extend, and observes whether the pointer on the piston rod is extending.

[0061] When the piston rod extends normally, after the piston rod of the synchronizing cylinder is fully extended, observe whether the pointer points to the maximum range of the scale. If the pointer does not point to the maximum range of the scale, then check each cylinder of the synchronizing cylinder and each actuator cylinder one by one.

[0062] If the pointer points to the maximum range of the scale, the piston rod of the synchronizing cylinder can be retracted. Observe whether the pointer on the piston rod is retracting. If the retraction is normal, after the piston rod of the synchronizing cylinder is fully retracted, observe whether the pointer and the 0 mark on the scale are in the same position. If there is a slight deviation, the low-pressure valve of the synchronizing cylinder control hydraulic valve panel can be switched to a high-pressure valve. By increasing the oil pressure, the piston rod can be fully retracted so that the pointer and the 0 mark on the scale are in the same position.

[0063] Then, the piston rod of the synchronizing cylinder is controlled to extend and retract repeatedly. The detection device is used to verify whether the minimum stroke of the synchronizing cylinder corresponds to the 0 mark on the scale, and whether the maximum stroke of the synchronizing cylinder corresponds to the maximum mark on the scale. At the same time, the exhaust work of the synchronizing cylinder and each actuator cylinder is also carried out to make the operation of the two cylinders more stable.

[0064] In this embodiment, the synchronizing cylinder can also be supplied with oil via a proportional directional valve. When the proportional directional valve receives a control signal from the first directional signal interval, it controls the piston rod of the synchronizing cylinder to extend. When the proportional directional valve receives a control signal from the second directional signal interval, it controls the piston rod of the synchronizing cylinder to retract.

[0065] By supplying oil to the synchronizing cylinder through a proportional directional valve, the oil supply rate can be flexibly adjusted, allowing the synchronizing cylinder to extend and retract at different speeds.

[0066] The lower limit of the first commutation signal interval is equal to the upper limit of the second commutation signal interval.

[0067] For example, the range of the first commutation signal interval is 12mA to 20mA, and the range of the second commutation signal interval is 4mA to 12mA.

[0068] Step 204: Connect each actuator cylinder to the load and input the first control signal to the proportional directional valve.

[0069] The first control signal is located in the first commutation signal range.

[0070] For example, the first control signal can be 13mA. This initial setting of a smaller signal value avoids an excessively large opening in the proportional directional valve, which would result in a high oil supply rate and cause the piston rod to extend rapidly.

[0071] During the commissioning process, the actuator is connected to the load, i.e., it is run under load, to determine whether the synchronous cylinder can drive the actuator to work normally under load.

[0072] Step 205: If the piston rod does not extend, the set value is accumulated based on the first control signal and input to the proportional directional valve until the piston rod extends at a constant speed, and the current control signal of the proportional directional valve is determined as the first stable signal.

[0073] For example, the set value ranges from 0.5mA to 1mA. For instance, the set value is 0.5mA.

[0074] By gradually accumulating smaller signal values ​​based on the initial control signal, a more accurate first stable signal can be determined. When controlling the synchronizing cylinder subsequently, this first stable signal can be directly input, allowing the synchronizing cylinder to extend more smoothly.

[0075] Step 206: Replace the control signal of the proportional directional valve with the second control signal.

[0076] The second control signal is located in the second commutation signal range.

[0077] For example, the second control signal can be 11mA. This initial setting of a smaller signal value avoids an excessively large opening in the proportional directional valve, which would result in a high oil supply rate and cause the piston rod to retract quickly.

[0078] Step 207: If the piston rod does not retract, the set value is subtracted from the second control signal and input to the proportional directional valve to make the piston rod retract at a constant speed until the pointer points to the 0 mark on the scale, and the current control signal of the proportional directional valve is determined as the second stable signal.

[0079] For example, the set value ranges from 0.5mA to 1mA. For instance, the set value is 0.5mA.

[0080] By gradually accumulating smaller signal values ​​based on the second control signal, a more accurate second stable signal can be determined. When controlling the synchronizing cylinder subsequently, the second stable signal can be directly input, allowing the synchronizing cylinder to retract more smoothly.

[0081] Steps 204 to 207 may specifically include:

[0082] First, connect all the actuators to the machine, that is, connect the actuators to the load.

[0083] Then, start the hydraulic station to supply pressurized oil to the control valve panel of the synchronizing cylinder. Then, open all the high-pressure ball valves on the oil inlet and return sides of the synchronizing cylinder, and also open the high-pressure ball valves on both sides of each actuator cylinder. After confirming that all are open, start the linkage test between the synchronizing cylinder and the actuator cylinder.

[0084] Next, set the proportional directional valve to a 13mA signal value. Observe whether the pointer on the synchronizer cylinder piston rod has begun to slowly extend. If the pointer remains steady, connect a vibration-resistant pressure gauge to the pressure measuring point in the synchronizer cylinder's oil inlet chamber and observe whether there is a pressure reading. If a pressure reading is detected, the setpoint of the proportional directional valve is too low. Then, slowly and gradually increase the signal value input to the proportional directional valve (e.g., 0.5mA). The maximum signal value input to the proportional directional valve should not exceed 19.5mA. While gradually increasing the signal value input to the proportional directional valve, observe the piston rod pointer. When the pointer begins to extend smoothly, stop increasing the signal value and allow the pointer to extend smoothly to the middle mark of the scale. For example, if the maximum stroke of the scale is 12.5cm, allow the pointer to extend smoothly to the 7cm mark on the scale.

[0085] Next, after the pointer smoothly extends to the middle mark of the scale, the middle value (e.g., the lower limit of the first reversing signal range, 12mA) is input to the proportional directional valve to stop the piston rod from extending.

[0086] Then, during the piston rod retraction, input a signal value (e.g., 11mA) to the proportional directional valve and observe whether the piston rod pointer has begun to slowly retract. If the pointer remains stationary, check the pressure gauge on the other side of the synchronous cylinder's oil inlet chamber for pressure readings. If pressure is detected, it indicates that the proportional directional valve's setpoint is too high. Then, slowly and gradually decrease the signal value input to the proportional directional valve (e.g., 0.5mA), ensuring the signal value does not exceed 4.5mA. While gradually decreasing the signal value, observe the piston rod pointer until it begins to retract smoothly. Stop decreasing the signal value and allow the pointer to retract smoothly to the 0 mark on the scale. Then, input the neutral value (12mA) to the proportional directional valve to stop the piston rod retraction.

[0087] Step 208: Input the first stable signal to the proportional directional valve to make the piston rod extend at a constant speed until the pointer points to the maximum scale.

[0088] Step 209: Replace the control signal of the proportional directional valve with the second stable signal to make the piston rod retract at a constant speed until the pointer points to the 0 mark on the scale.

[0089] When the piston rod extends to its minimum stroke and the pointer also points to the 0 mark on the scale, it indicates that the minimum stroke of the piston rod of the synchronizing cylinder is consistent with the minimum stroke of the actuator cylinder when connected to the load. When the piston rod extends to its maximum stroke and the pointer also points to the maximum mark on the scale, it indicates that the maximum stroke of the piston rod of the synchronizing cylinder is consistent with the maximum stroke of the actuator cylinder when connected to the load. Therefore, it can be determined that the actuator cylinder of the synchronizing cylinder is not affected when it reaches its maximum or minimum stroke at a constant speed after being connected to the load.

[0090] Steps 208 to 209 may specifically include:

[0091] First, input the first stable signal to the proportional directional valve. At this time, observe the pointer on the piston rod of the synchronous cylinder start to slowly extend and run. After the pointer smoothly extends to the maximum scale (e.g., 12.5cm), input the middle value (12mA) to the proportional directional valve to stop the piston rod from extending.

[0092] Then, input the second stable signal to the proportional directional valve. At this time, observe the pointer on the piston rod of the synchronous cylinder begin to slowly retract. After the pointer points to the 0 mark on the scale, input the midpoint value (12mA) to the proportional directional valve to stop the piston rod from retracting.

[0093] After steps 208 to 209 have been executed 5 to 10 times, steps 210 to 212 can be executed.

[0094] Step 210: Input the first stable signal to the proportional directional valve so that the pointer points to any position between the 0 mark and the maximum mark on the scale.

[0095] Step 211: Input the lower limit value of the first reversing signal range into the proportional directional valve, and close the proportional directional valve after the piston rod stops moving.

[0096] Step 212: If the pointer remains stable, it confirms that the synchronization cylinder has passed the uniform speed adjustment when each actuator is under load.

[0097] Steps 210 to 212 may specifically include: First, input a first stable signal to the proportional directional valve, observe the pointer on the piston rod of the synchronizing cylinder start to slowly extend and run, let the pointer smoothly extend and run to the middle mark of the scale (for example, 7cm), then input the middle value (12mA) to the proportional directional valve to stop the piston rod from extending, stop observing the pressure holding situation for 20 minutes, and when the pointer on the piston rod of the synchronizing cylinder and the dwell position of each actuator cylinder are stable, the subsequent steps 213 to 214 can be performed for speed-up debugging.

[0098] Step 213: Input the first acceleration signal to the proportional directional valve to extend the piston rod until the pointer points to the maximum scale.

[0099] The first acceleration signal is greater than the first stabilization signal. Therefore, when the proportional directional valve receives the first acceleration signal, its opening widens, thereby increasing the oil flow rate and raising the pressure in the synchronizing cylinder, allowing the piston rod to extend at a faster speed.

[0100] For example, the first acceleration signal can be 17mA.

[0101] Step 214: Replace the control signal of the proportional directional valve with the second acceleration signal to retract the piston rod until the pointer points to the 0 mark on the scale.

[0102] The second acceleration signal is less than the second stabilization signal. Therefore, when the proportional directional valve receives the second acceleration signal, its opening widens, thereby increasing the oil flow rate and raising the pressure in the synchronizing cylinder, allowing the piston rod to retract at a faster speed.

[0103] For example, the second acceleration signal can be 7mA.

[0104] Steps 213 to 214 may specifically include:

[0105] First, input the first acceleration signal (e.g., 17mA) to the proportional directional valve. At this time, observe the pointer on the piston rod of the synchronous cylinder start to extend. Let the pointer on the piston rod extend to the maximum scale position on the scale, and after the proximity switch of the piston rod extending to the position is activated, input the middle value (12mA) to the proportional directional valve to stop the piston rod from extending.

[0106] Then, input a second acceleration signal (e.g., 7mA) to the proportional directional valve. At this time, observe the pointer on the piston rod of the synchronous cylinder start to retract. Let the pointer on the piston rod retract to the 0 mark on the scale, and after the proximity switch for the piston rod to retract to the position is activated, input the middle value (12mA) to the proportional directional valve to stop the piston rod from retracting.

[0107] In this embodiment of the disclosure, the synchronization cylinder is first adjusted at a constant and slow speed before speed-up adjustment. This is because the mechanical equipment has just been assembled, so a slow speed is used to conduct a test to avoid scratches or prevent impurities in the synchronization cylinder from easily damaging the equipment.

[0108] Step 215 can be executed after steps 213 to 214 have been executed 5 to 10 times.

[0109] Step 215: Control the pressure relief valve on the oil line of the rodless chamber of each actuator to open for 3 to 8 seconds and then close.

[0110] Step 215 is the process for eliminating errors between the synchronizing cylinder and each actuator cylinder. Specifically, it may include: observing that the pointer on the piston rod of the synchronizing cylinder retracts to the 0 mark on the scale, and after the proximity switch is activated when the piston rod retracts to its position, controlling the pressure relief valve to be energized for 3 seconds and then de-energized, which can make the equipment operate more stably.

[0111] The synchronization cylinder debugging method provided in this disclosure is time-saving, labor-saving, and convenient and quick to observe. Compared with related technologies, this debugging method optimizes the debugging process from requiring three or more people to just two. Previously, one person needed to be at the control valve panel, another at the piston rod position of the synchronization cylinder to perform repeated measurements, and yet another person needed to observe each actuator. After optimization, this method reduces the need for one person at the control valve panel and another at the piston rod position of the synchronization cylinder to just one person. This debugging method results in more accurate data, tighter equipment coordination, and more stable operation.

[0112] This disclosure provides a testing device for a synchronizing cylinder 20, which is applicable to the debugging method of the synchronizing cylinder 20 as described above. Figure 2 As shown, the detection device includes a protective cylinder 10, a scale 11, and a pointer 12. One end of the protective cylinder 10 is coaxially connected to the front end cover of the synchronizing cylinder 20, and the protective cylinder 10 is fitted outside the piston rod 21 of the synchronizing cylinder 20. The pointer 12 is located on the end face of the piston rod 21, and the length direction of the pointer 12 is perpendicular to the axial direction of the piston rod 21. The outer wall of the protective cylinder 10 has a transparent area that exposes the pointer 12. The scale 11 is located on the outer wall of the protective cylinder 10, and the scale 11 is located on one side of the transparent area. The length direction of the scale 11 is parallel to the axial direction of the piston rod 21, and the end of the pointer 12 faces the scale 11.

[0113] In this embodiment, the scale 11 can be a steel stamp engraved on the outer wall of the protective cylinder 10. This eliminates the need for a physical scale on the protective cylinder, effectively reducing the volume occupied by the detection device. Furthermore, engraving the steel stamp directly on the protective cylinder eliminates the need for technicians to adjust the scale, making it convenient to use.

[0114] When the piston rod 21 is at its minimum stroke, the pointer 12 points to the 0 mark on the scale 11; when the piston rod 21 is at its maximum stroke, the pointer 12 points to the maximum mark on the scale 11.

[0115] Without this testing device, when debugging the synchronizing cylinder 20, one person needs to repeatedly measure the piston rod 21 position of the large eight-unit synchronizing cylinder 20 back and forth (measuring the extension and retraction of the piston rod 21), and the measured data is not very accurate, increasing the debugging difficulty and debugging time.

[0116] According to the experiment, it takes 12 hours to debug the synchronization cylinder 20 without the testing device, while the debugging time is shortened to 8 hours when the testing device is used.

[0117] Optionally, such as Figure 2 As shown, the detection device also includes a protective end cap 13, which is located at the end of the protective cylinder 10 away from the synchronous cylinder 20.

[0118] In this embodiment, the protective end cap 13 provides a safety guarantee for the equipment, preventing foreign objects and impurities from entering the synchronization cylinder 20 and preventing the piston rod 21 from being damaged. At the same time, it reduces the workload of daily maintenance personnel and allows technicians to more easily and quickly observe the equipment's operating status.

[0119] Optionally, such as Figure 2 As shown, the detection device also includes a dust cover 14, which is located on the outer wall of the protective cylinder 10 and is positioned above the scale 11, that is, the protective cover is positioned above the transparent area.

[0120] A dust cover 14 is provided on the outer wall of the protective cylinder 10 to prevent dust from accumulating on the transparent area of ​​the protective cylinder 10 and obscuring the area of ​​the observation scale 11, so that technicians can more clearly observe the positional relationship between the pointer 12 and the scale 11.

[0121] Optionally, such as Figure 2 As shown, the protective cylinder 10 is also equipped with two proximity switches 15. One proximity switch 15 is set at the 0 mark of the scale, and the other proximity switch 15 is set at the maximum mark of the scale.

[0122] This way, when the proximity switch furthest from the synchronizing cylinder detects a signal, it indicates that the piston rod has extended to its maximum stroke; when the proximity switch furthest from the synchronizing cylinder does not detect a signal, but the proximity switch closest to the synchronizing cylinder detects a signal, it indicates that the piston rod is extending between its minimum and maximum stroke. The proximity switches facilitate technicians in quickly understanding the current stroke of the piston rod.

[0123] The above is not intended to limit this disclosure in any way. Although this disclosure has been disclosed above through embodiments, it is not intended to limit this disclosure. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this disclosure. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solution of this disclosure shall still fall within the scope of the technical solution of this disclosure.

Claims

1. A method for adjusting a synchronizing cylinder, characterized in that, The debugging method includes: A detection device is installed on the front end cover of the synchronizing cylinder. The detection device includes a protective cylinder, a scale, and a pointer. One end of the protective cylinder is coaxially connected to the front end cover of the synchronizing cylinder, and the protective cylinder is fitted over the piston rod of the synchronizing cylinder. The pointer is located on the end face of the piston rod, and the length direction of the pointer is perpendicular to the axial direction of the piston rod. The outer wall of the protective cylinder has a transparent area that exposes the pointer. The scale is located on the outer wall of the protective cylinder and on one side of the transparent area. The length direction of the scale is parallel to the axial direction of the piston rod. The end of the pointer faces the scale. When the piston rod is at its minimum stroke, the pointer points to the 0 mark on the scale. When the piston rod is at its maximum stroke, the pointer points to the maximum mark on the scale. Connecting each actuator cylinder to the synchronization cylinder and injecting hydraulic oil into the oil port of the synchronization cylinder controls the piston rod to extend and retract between the minimum and maximum stroke. The synchronization cylinder is supplied with oil through a proportional directional valve. When the proportional directional valve receives a control signal for a first directional signal interval, it controls the piston rod of the synchronization cylinder to extend; when it receives a control signal for a second directional signal interval, it controls the piston rod of the synchronization cylinder to retract. The lower limit of the first directional signal interval is equal to the upper limit of the second directional signal interval. Connecting each actuator cylinder to the synchronization cylinder and injecting hydraulic oil into the oil port of the synchronization cylinder to control the piston rod to extend and retract between the minimum and maximum stroke includes: connecting each actuator cylinder to the load and supplying hydraulic oil to the proportional directional valve. A first control signal is input, which is located within the first reversing signal range. If the piston rod does not extend, a set value is accumulated on the first control signal and input to the proportional reversing valve until the piston rod extends at a constant speed, and the current control signal of the proportional reversing valve is determined as the first stable signal. The control signal of the proportional reversing valve is then replaced with a second control signal, which is located within the second reversing signal range. If the piston rod does not retract, the set value is accumulated and subtracted from the second control signal and input to the proportional reversing valve, causing the piston rod to retract at a constant speed until the pointer points to the 0 mark on the scale, and the current control signal of the proportional reversing valve is determined as the second stable signal. If the pointer points to the 0 mark on the scale when the piston rod extends to its minimum stroke, and the pointer points to the maximum mark on the scale when the piston rod extends to its maximum stroke, then the adjustment is considered successful.

2. The debugging method according to claim 1, characterized in that, Connecting each actuator cylinder to the synchronizing cylinder, injecting hydraulic oil into the oil port of the synchronizing cylinder, and controlling the extension and retraction of the piston rod between the minimum and maximum strokes include: Disconnect each of the actuators from the load, inject hydraulic oil into the oil port of the synchronizing cylinder, and control the piston rod to extend and retract between the minimum stroke and the maximum stroke; If the pointer points to the 0 mark on the scale when the piston rod extends to its minimum stroke, and the pointer points to the maximum mark on the scale when the piston rod extends to its maximum stroke, then the adjustment is deemed successful when each of the actuator cylinders is unloaded.

3. The debugging method according to claim 1, characterized in that, The first commutation signal range is 12mA to 20mA, the second commutation signal range is 4mA to 12mA, and the set value ranges from 0.5mA to 1mA.

4. The debugging method according to claim 1, characterized in that, If the piston rod does not retract, the set value is gradually reduced based on the second control signal to make the piston rod retract at a constant speed until the pointer points to the 0 mark of the scale. The process then includes: The first smooth signal is input to the proportional directional valve, causing the piston rod to extend at a constant speed until the pointer points to the maximum scale of the scale. The control signal of the proportional directional valve is replaced with a second stable signal, causing the piston rod to retract at a constant speed until the pointer points to the 0 mark on the scale.

5. The debugging method according to claim 4, characterized in that, The debugging method also includes: The first stabilizing signal is input to the proportional directional valve, causing the pointer to point to any position between the 0 mark and the maximum mark of the scale; Input the lower limit value of the first reversing signal range into the proportional reversing valve, and close the proportional reversing valve after the piston rod stops moving; If the pointer remains stable, it is determined that the synchronization cylinder has passed the uniform speed adjustment when each of the actuators is under load.

6. The debugging method according to claim 5, characterized in that, If the pointer remains stable, then after determining that the synchronization cylinder has passed the uniform speed adjustment when each of the actuators is under load, the process further includes: A first acceleration signal is input to the proportional directional valve, causing the piston rod to extend until the pointer points to the maximum scale of the scale. The first acceleration signal is greater than the first stabilization signal. The control signal of the proportional directional valve is replaced with a second acceleration signal, causing the piston rod to retract until the pointer points to the 0 mark on the scale. The second acceleration signal is less than the second steady signal.

7. The debugging method according to claim 6, characterized in that, The control signal of the proportional directional valve is replaced with a second acceleration signal, causing the piston rod to retract until the pointer points to the 0 mark on the scale. The process further includes: The pressure relief valve on the oil line controlling the rodless chamber of each actuator opens for 3 to 8 seconds and then closes.

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