A dual-cylinder controlled polishing system

Abstract

The application discloses a double-cylinder control polishing system, which comprises a polishing device, a control cylinder, a first pressure regulating valve, a second pressure regulating valve, a compressed air source, a balance cylinder and a pressure regulating control unit, the compressed air source is connected with a large cavity of the control cylinder through the first pressure regulating valve and is connected with a small cavity of the control cylinder through the second pressure regulating valve, and the control cylinder is connected with the polishing device; the compressed air source is connected with the small cavity of the balance cylinder through the pressure regulating control unit, and the balance cylinder is connected with the polishing device. Through the balance cylinder, the self gravity of the polishing device can be balanced in the polishing stage, and the polishing device can be lifted in an emergency when a fault occurs; the control cylinder can regulate the pressure of the large and small cavities through the first pressure regulating valve and the second pressure regulating valve, so that the polishing pressure can be accurately controlled, and the normal lifting, hovering and pressing control of the polishing device can be realized.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, and in particular to a dual-cylinder controlled polishing system. Background Technology

[0002] When grinding rails, the grinding device needs to apply a certain grinding pressure to make the grinding wheel press against the rail.

[0003] Currently, some grinding devices typically use hydraulic cylinders, electric cylinders, or pneumatic cylinders as actuators to provide grinding pressure.

[0004] When hydraulic cylinders are used for control, the grinding pressure is high, making it difficult to achieve low-pressure control. Furthermore, hydraulic oil leakage can easily cause driving safety hazards, resulting in high operating costs and inconvenient maintenance.

[0005] When using electric cylinder control, displacement control is generally used. When the power fluctuates, the adjustment of the electric cylinder can easily cause the grinding wheel to not contact the rail, resulting in discontinuous grinding.

[0006] When using cylinder control, it is usually controlled by a single cylinder. To overcome the weight of the grinding device, a cylinder with a larger diameter is usually selected or the system pressure is increased. Due to the larger cylinder diameter or the larger adjustment range of the system pressure, the response time is easily prolonged, resulting in a poorer grinding effect. Summary of the Invention

[0007] The purpose of this invention is to provide a dual-cylinder controlled grinding system that can achieve precise control of grinding pressure and is safe and reliable in operation.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A dual-cylinder controlled grinding system includes a grinding device and further includes:

[0010] The system includes a control cylinder, a first pressure regulating valve, a second pressure regulating valve, and a compressed air source. The compressed air source is connected to the large chamber of the control cylinder through the first pressure regulating valve and to the small chamber of the control cylinder through the second pressure regulating valve. The control cylinder is connected to the grinding device.

[0011] The system includes a balancing cylinder and a pressure regulating control unit. The compressed air source is connected to the small or large cavity of the balancing cylinder through the pressure regulating control unit. The balancing cylinder is connected to the grinding device.

[0012] Preferably, the pressure regulating control unit includes a third pressure regulating valve and a first solenoid valve, and the compressed air source is connected to the small or large cavity of the balance cylinder in sequence through the third pressure regulating valve and the first solenoid valve.

[0013] Preferably, the pressure regulating control unit further includes a fourth pressure regulating valve, a second solenoid valve, and a pressure stabilizing cylinder. The compressed air source is connected to the small or large cavity of the balancing cylinder in sequence through the fourth pressure regulating valve and the second solenoid valve. The pressure stabilizing cylinder is connected in the air path between the fourth pressure regulating valve and the second solenoid valve. The pressure stabilizing cylinder is used to stabilize the pressure in the small or large cavity of the balancing cylinder.

[0014] Preferably, the first solenoid valve and the second solenoid valve are connected to the small chamber of the balance cylinder through the same shuttle valve.

[0015] Preferably, a pressure sensor is connected in the air path connecting the shuttle valve and the balancing cylinder. The pressure sensor is used to allow compressed air supplied by the compressed air source to enter the small or large chamber of the balancing cylinder through the third pressure regulating valve, the first solenoid valve, and the shuttle valve when an abnormal pressure is detected.

[0016] Preferably, the compressed air source is connected to the fourth pressure regulating valve via a one-way valve.

[0017] Preferably, the first pressure regulating valve and the second pressure regulating valve are proportional pressure regulating valves.

[0018] Preferably, the dual-cylinder controlled grinding system further includes a first emergency control unit, which is communicatively connected to the first pressure regulating valve, the second pressure regulating valve, and the first solenoid valve. The first emergency control unit is used to control the first solenoid valve to connect its emergency circuit when the first pressure regulating valve or the second pressure regulating valve loses power, so as to raise the grinding device to the highest position.

[0019] Preferably, the dual-cylinder controlled grinding system further includes a second emergency control unit, which is communicatively connected to the first solenoid valve and the second solenoid valve. The second emergency control unit is used to control the first solenoid valve to connect its emergency circuit when the first solenoid valve and the second solenoid valve lose power, so as to raise the grinding device to the highest position.

[0020] Compared with existing technologies, the above technical solution has the following advantages:

[0021] This invention provides a dual-cylinder controlled grinding system, comprising a grinding device, a control cylinder, a first pressure regulating valve, a second pressure regulating valve, a compressed air source, a balancing cylinder, and a pressure regulating control unit. The compressed air source is connected to the large chamber of the control cylinder via the first pressure regulating valve and to the small chamber of the control cylinder via the second pressure regulating valve. The control cylinder is connected to the grinding device. The compressed air source is connected to either the small or large chamber of the balancing cylinder via the pressure regulating control unit. The balancing cylinder is connected to the grinding device. The balancing cylinder can balance the weight of the grinding device during the grinding stage and can be used for emergency lifting in case of device malfunction. The control cylinder adjusts the pressure in its large and small chambers via the first and second pressure regulating valves, enabling precise control of the grinding pressure and allowing for normal lifting, hovering, and downward control of the grinding device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a dual-cylinder controlled grinding system provided for a specific embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] 1 is a grinding device, 2 is a control cylinder, 3 is a balancing cylinder, 4 is a first pressure regulating valve, 5 is a second pressure regulating valve, 6 is a compressed air source, 7 is a third pressure regulating valve, 8 is a first solenoid valve, 9 is a shuttle valve, 10 is a pressure sensor, 11 is a check valve, 12 is a fourth pressure regulating valve, 13 is a pressure stabilizing cylinder, and 14 is a second solenoid valve. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please refer to Figure 1This invention provides a dual-cylinder controlled grinding system, comprising a grinding device 1, a control cylinder 2, a first pressure regulating valve 4, a second pressure regulating valve 5, a compressed air source 6, a balancing cylinder 3, and a pressure regulating control unit. The compressed air source 6 provides clean and safe compressed air. The compressed air source 6 is connected to the large chamber of the control cylinder 2 via the first pressure regulating valve 4 and to the small chamber of the control cylinder 2 via the second pressure regulating valve 5. The control cylinder 2 is connected to the grinding device 1. The first and second pressure regulating valves 4 and 5 can be selected as proportional pressure regulating valves. The compressed air source 6 is connected to the small chamber of the balancing cylinder 3 via the pressure regulating control unit. The balancing cylinder 3 is connected to the grinding device 1. The balancing cylinder 3 can balance the weight of the grinding device 1 during the grinding stage and can be used for emergency lifting in case of malfunction. The control cylinder 2 adjusts the pressure of its large and small chambers via the first and second pressure regulating valves 4 and 5, enabling precise control of the grinding pressure and normal lifting, hovering, and downward control of the grinding device 1.

[0028] In some embodiments, the pressure regulating control unit includes a third pressure regulating valve 7 and a first solenoid valve 8. The compressed air source 6 is connected to the small cavity of the balance cylinder 3 in sequence through the third pressure regulating valve 7 and the first solenoid valve 8. When the grinding device 1 malfunctions, the first solenoid valve 8 opens its air passage, and the compressed air from the compressed air source 6 enters the small cavity of the balance cylinder 3 in sequence through the third pressure regulating valve 7 and the first solenoid valve 8, thereby realizing the emergency lifting of the grinding device 1. The pressure regulating control unit also includes a fourth pressure regulating valve 12, a second solenoid valve 14, and a pressure stabilizing cylinder 13. The compressed air source 6 is connected to the small cavity of the balance cylinder 3 in sequence through the fourth pressure regulating valve 12 and the second solenoid valve 14. The pressure stabilizing cylinder 13 is connected to the air passage between the fourth pressure regulating valve 12 and the second solenoid valve 14. The pressure stabilizing cylinder 13 is used to compensate the pressure of the small cavity of the balance cylinder 3, reduce pressure fluctuations, realize the balanced lifting or lowering of the grinding device 1, or realize constant pressure control of the grinding device 1, or ensure the smoothness of the grinding device 1 during the hovering process. The third pressure regulating valve 7 and the fourth pressure regulating valve 12 can be precision pressure regulating valves. The first solenoid valve 8 and the second solenoid valve 14 are connected to the small chamber of the balance cylinder 3 through the same shuttle valve 9.

[0029] In some embodiments, a pressure sensor 10 is connected in the air path connecting the shuttle valve 9 and the balance cylinder 3. When the pressure sensor 10 detects an abnormal pressure, the compressed air provided by the compressed air source 6 enters the small chamber of the balance cylinder 3 through the third pressure regulating valve 7, the first solenoid valve 8 and the shuttle valve 9. At this time, the balance cylinder 3 can be raised, thereby achieving the purpose of emergency lifting of the grinding device 1.

[0030] In some embodiments, the compressed air source 6 is connected to the fourth pressure regulating valve 12 via a one-way valve 11. The one-way valve 11 can prevent compressed air backflow, thereby ensuring the stability and accuracy of the control of the pressure regulating cylinder 13.

[0031] In some embodiments, the dual-cylinder controlled grinding system further includes a first emergency control unit. The first emergency control unit is communicatively connected to the first pressure regulating valve 4, the second pressure regulating valve 5, and the first solenoid valve 8. When the first pressure regulating valve 4 or the second pressure regulating valve 5 loses power, for example, during the grinding process, the first pressure regulating valve 4 or the second pressure regulating valve 5 abnormally loses power, causing the grinding device 1 to malfunction. At this time, the first emergency control unit controls the first solenoid valve 8 to connect its emergency circuit. The emergency circuit refers to the air path where the first solenoid valve 8 is located, so as to raise the grinding device 1 to the highest position, thereby ensuring the safety of the operation.

[0032] In some embodiments, the dual-cylinder controlled grinding system further includes a second emergency control unit. The second emergency control unit is communicatively connected to the first solenoid valve 8 and the second solenoid valve 14. When the first solenoid valve 8 and the second solenoid valve 14 lose power, for example, during the operation of the grinding device 1, the second solenoid valve 14 loses power abnormally, causing the balance cylinder 3 to malfunction, which in turn causes the grinding device 1 to malfunction. At this time, the second emergency control unit controls the first solenoid valve 8 to connect its emergency circuit so that the grinding device 1 is raised to the highest position, thereby ensuring the safety of the operation.

[0033] In summary, the working principle of the dual-cylinder controlled grinding system provided in this application is as follows:

[0034] Smooth lifting or lowering of the grinding device 1: When the second solenoid valve 14 is energized, the fourth pressure regulating valve 12 is adjusted so that the balancing cylinder 3 can balance the weight of the grinding device 1. At the same time, the first pressure regulating valve 4 and the second pressure regulating valve 5 control the pressure difference between the large and small chambers of the control cylinder 2. The pressure stabilizing air cylinder 13 compensates for the pressure in the small chamber of the balancing cylinder 3, reducing its pressure fluctuation, thereby achieving smooth lifting or lowering of the grinding device 1.

[0035] Constant pressure control of grinding device 1: When the second solenoid valve 14 is energized, the fourth pressure regulating valve 12 is adjusted so that the balancing cylinder 3 can balance the weight of the grinding device 1. At the same time, the first pressure regulating valve 4 and the second pressure regulating valve 5 control the large and small chambers of the control cylinder 2 to keep the system balanced. The pressure stabilizing cylinder 13 compensates for the pressure of the small chamber of the balancing cylinder 3 to reduce its pressure fluctuation, thereby achieving constant pressure control of grinding device 1.

[0036] The hovering control of the grinding device 1 involves energizing the second solenoid valve, adjusting the fourth pressure regulating valve 12 to enable the balancing cylinder 3 to balance the weight of the grinding device 1, and simultaneously controlling the pressure difference between the large and small chambers of the control cylinder 2 by the first pressure regulating valve 4 and the second pressure regulating valve 5. This allows the grinding device 1 to be raised to the set point at a predetermined speed, and then the pressure of the large and small chambers of the control cylinder 2 is adjusted to lock the grinding device 1 after it hovers. The pressure stabilizing cylinder 13 compensates for the pressure fluctuation of the small chamber of the balancing cylinder 3, thereby achieving a smooth hovering process for the grinding device 1.

[0037] When the proportional pressure regulating valve and the solenoid valve are both de-energized or the pressure sensor 10 transmits an abnormal pressure signal, the first solenoid valve 8 connects the emergency circuit, and the grinding device 1 automatically lifts to the highest position, thereby realizing the emergency lifting function.

[0038] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0040] The present invention provides a detailed description of a dual-cylinder controlled grinding system. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative and are intended to help understand the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A dual-cylinder controlled polishing system comprising a polishing device (1), characterized in that, Also includes: The control cylinder (2), the first pressure regulating valve (4), the second pressure regulating valve (5) and the compressed air source (6) are connected to the large chamber of the control cylinder (2) through the first pressure regulating valve (4) and to the small chamber of the control cylinder (2) through the second pressure regulating valve (5). The control cylinder (2) is connected to the grinding device (1). The balance cylinder (3) and the pressure regulating control unit are provided. The compressed air source (6) is connected to the small or large cavity of the balance cylinder (3) through the pressure regulating control unit. The balance cylinder (3) is connected to the grinding device (1). The pressure regulating control unit includes a third pressure regulating valve (7) and a first solenoid valve (8). The compressed air source (6) is connected in sequence to the third pressure regulating valve (7) and the first solenoid valve (8) and the balance cylinder (3). The pressure regulating control unit also includes a fourth pressure regulating valve (12), a second solenoid valve (14), and a pressure stabilizing cylinder (13). The compressed air source (6) is connected in sequence to the fourth pressure regulating valve (12), the second solenoid valve (14), and the balancing cylinder (3). The pressure stabilizing cylinder (13) is connected to the air path between the fourth pressure regulating valve (12) and the second solenoid valve (14). The pressure stabilizing cylinder (13) is used to stabilize the pressure in the small or large chamber of the balancing cylinder (3). The first solenoid valve (8) and the second solenoid valve (14) are connected to the small or large chamber of the balance cylinder (3) through the same shuttle valve (9).

2. The dual cylinder controlled sanding system of claim 1, wherein, A pressure sensor (10) is connected to the air path connecting the shuttle valve (9) and the balance cylinder (3). The pressure sensor (10) is used to allow compressed air provided by the compressed air source (6) to enter the small or large chamber of the balance cylinder (3) through the third pressure regulating valve (7), the first solenoid valve (8) and the shuttle valve (9) when an abnormal pressure is detected.

3. The dual cylinder controlled sanding system of claim 2, wherein, The compressed air source (6) is connected to the fourth pressure regulating valve (12) through a one-way valve (11).

4. The dual cylinder controlled sanding system of claim 1, wherein, The first pressure regulating valve (4) and the second pressure regulating valve (5) are proportional pressure regulating valves.

5. The dual cylinder controlled sanding system of claim 1, wherein, It also includes a first emergency control unit, which is communicatively connected to the first pressure regulating valve (4), the second pressure regulating valve (5) and the first solenoid valve (8). The first emergency control unit is used to control the first solenoid valve (8) to connect its emergency circuit when the first pressure regulating valve (4) or the second pressure regulating valve (5) loses power, so as to raise the grinding device (1) to the highest position.

6. The dual cylinder controlled sanding system of claim 1, wherein, It also includes a second emergency control unit, which is communicatively connected to the first solenoid valve (8) and the second solenoid valve (14). The second emergency control unit is used to control the first solenoid valve (8) to connect its emergency circuit when the first solenoid valve (8) and the second solenoid valve (14) lose power, so as to raise the grinding device (1) to the highest position.

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