Hydraulic device for master-slave cylinder

Abstract

The present application relates to the technical field of hydraulic devices, and discloses a primary-secondary oil cylinder hydraulic device, which comprises an oil cylinder body and a piston rod body slidingly installed on the inner wall of the oil cylinder body, the inner wall of the oil cylinder body is fixedly installed with a quick piston rod, the end of the piston rod body is provided with an oil groove corresponding to the quick piston rod, a liquid filling valve is arranged at the pressurized oil port of the oil cylinder body, a secondary oil tank corresponding to the liquid filling valve is arranged on the outer wall of the oil cylinder body, a cooling assembly is arranged on the secondary oil tank, and a floating plate is arranged on the inner side of the secondary oil tank. The magnetic sheets are attracted to drive the support in the refrigerant tank to move synchronously, the driving rack drives the impeller to rotate through the transmission mechanism, the cooling liquid is circulated between the cooling pipe and the refrigerant tank, and the high-temperature oil liquid temperature in the secondary oil tank can be quickly reduced through the combination of the refrigerant plate cooling, so as to avoid the problems of viscosity reduction and sealing failure caused by overheating of the oil liquid, and the stable operation of the primary-secondary oil cylinder in fast-paced work is ensured.

Description

Technical Field

[0001] This invention relates to the field of hydraulic device technology, and more particularly to a master-slave hydraulic device. Background Technology

[0002] The master-slave hydraulic equipment is a hydraulic system with master-slave cylinders as the core actuators. It has a unique structure and working principle and is widely used in various industrial fields. The master-slave hydraulic equipment consists of a master cylinder and a slave cylinder. The master cylinder is the main hydraulic cylinder, and the slave cylinder is an auxiliary cylinder attached to the master cylinder. Both are connected to the hydraulic system through pipelines and valves.

[0003] A search revealed Chinese patent CN113351650A, which discloses a hydraulic pressing device with a master and slave cylinder. The device includes a slave cylinder, a master cylinder, and a first hydraulic unit. The master cylinder comprises a first cylinder body and a first plunger, one end of which abuts against the upper roller seat of the upper roller. The slave cylinder includes a second cylinder body, a second plunger, and a drive unit. The drive unit drives the second plunger to move within the second cylinder body. The first and second cylinder bodies are connected, and the first hydraulic unit is connected to both via pipelines, with a hydraulically controlled check valve installed on the pipelines. The device relies solely on a low-power servo motor to move the second plunger of the slave cylinder back and forth, adjusting the roller gap by changing the oil volume in the master cylinder. Therefore, it offers advantages such as low equipment cost, stable and reliable operation, and low energy consumption. However, in practical use, this solution still has the following shortcomings:

[0004] In practical applications of the aforementioned master-slave hydraulic cylinders, to meet the need for rapid oil replenishment when the master and slave cylinders work together, a dedicated auxiliary oil tank is usually installed on the master cylinder. However, under fast-paced operating conditions, this design causes the oil to undergo repeated and intense compression, flow, and energy conversion within a short period due to the rapid extension and retraction of the slave cylinder and the high-pressure thrust of the master cylinder during the high-frequency alternating movements of the master and slave cylinders. This results in a sharp increase in oil temperature. Furthermore, existing auxiliary oil tanks primarily serve the functions of oil storage and replenishment, and their structural design is not optimized for efficient heat dissipation. In addition, the oil does not have sufficient residence time for natural cooling under fast-paced operation, preventing the high-temperature oil in the system from dissipating excess heat in time. This sustained high temperature accelerates the oxidation and deterioration of the hydraulic oil, reducing its lubrication performance and sealing effect.

[0005] Therefore, a master-slave hydraulic device needs to be designed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a master-slave hydraulic cylinder device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A master-slave hydraulic device includes a cylinder body and a piston rod that is slidably mounted on the inner wall of the cylinder body. A quick piston rod is fixedly mounted on the inner wall of the cylinder body. An oil groove corresponding to the quick piston rod is opened at the end of the piston rod. A filling valve is provided at the pressurization port of the cylinder body. An auxiliary oil tank corresponding to the filling valve is provided on the outer wall of the cylinder body. A cooling component is provided on the auxiliary oil tank. A float plate is provided on the inner side of the auxiliary oil tank. Two sets of matching linkage components are provided between the auxiliary oil tank and the cooling component.

[0009] The cooling assembly includes a refrigerant tank fixedly installed on the side of the auxiliary oil tank. Two cooling pipes are symmetrically fixedly installed on the inner wall of the auxiliary oil tank, and both ends of the cooling pipes are connected to the refrigerant tank. A refrigerant plate is fixedly installed on the inner wall of the refrigerant tank, and two sets of pump liquid structures corresponding to the cooling pipes are symmetrically arranged on the inner wall of the refrigerant tank.

[0010] As a preferred embodiment of the present invention, the inner side of the refrigerant tank is filled with coolant.

[0011] As a preferred embodiment of the present invention, the linkage component includes a first guide groove symmetrically formed on the inner walls of the auxiliary oil tank and the refrigerant tank, a second guide groove formed on the inner walls of the auxiliary oil tank and the refrigerant tank at a position between the two guide grooves, guide plates slidably mounted on the inner walls of the two first guide grooves, brackets fixedly mounted on the sides of the two guide plates, mounting plates fixedly mounted on the sides of the brackets, magnetic plates fixedly mounted on the sides of the mounting plates, and a float plate fixedly connected to the side of the bracket located inside the auxiliary oil tank.

[0012] As a preferred embodiment of the present invention, the magnetic poles of the auxiliary oil tank and the magnetic sheet inside the refrigerant tank are opposite.

[0013] As a preferred embodiment of the present invention, two slots are symmetrically opened on both sides of the guide plate, and a support wheel is rotatably installed on the inner wall of the slot.

[0014] As a preferred embodiment of the present invention, the pump structure includes an impeller rotatably mounted on the inner wall of the bottom end of the cooling pipe via a mounting bracket. A shaft is fixedly mounted on the side of the impeller. The end of the shaft away from the impeller is located on the outer side of the cooling pipe and fitted with a one-way bearing. A transmission gear is rotatably mounted on the inner wall of the refrigerant tank at the top side of a guide groove. A drive rack that meshes with the transmission gear is fixedly mounted on the side of the bracket. The transmission gear and the one-way bearing are connected by a driven pulley and a synchronous belt.

[0015] As a preferred embodiment of the present invention, the top surface of the refrigerant box has two clearance openings corresponding to the drive rack.

[0016] As a preferred embodiment of the present invention, a filter frame is provided on the inner wall of the auxiliary oil tank at the liquid outlet of the filling valve, and a control component is provided between the mounting plate on the inner side of the refrigerant tank and the filter frame.

[0017] As a preferred embodiment of the present invention, the control component includes a swing arm rotatably mounted on the inner wall of the auxiliary oil tank, and the filter frame is fixedly connected to one end of the swing arm. A linkage gear is fixedly mounted on the other end of the swing arm. A linkage rod is provided through the inner wall of the auxiliary oil tank, and one end of the linkage rod is located inside the refrigerant tank. A linkage rack that meshes with the linkage gear is fixedly mounted on the end of the linkage rod located inside the auxiliary oil tank. A clearance groove corresponding to the moving trajectory of the filter frame is opened on the inner bottom surface of the auxiliary oil tank. A propulsion structure is provided between the mounting plate and the linkage rod.

[0018] As a preferred embodiment of the present invention, the propulsion structure includes a connecting rod 1 fixedly installed at the inner end of the linkage rod located inside the refrigerant box, a connecting rod 2 fixedly installed at the end of the connecting rod 1, and magnetic plates 3 fixedly installed at the bottom and top ends of the connecting rod 1 and connecting rod 2 respectively located in the guide groove 2. Magnetic plates 2 corresponding to magnetic plates 3 are fixedly installed on both the bottom and top surfaces of the mounting plate.

[0019] The present invention has the following beneficial effects:

[0020] 1. In this invention, the magnetic plates attract each other, causing the support inside the refrigerant tank to move synchronously. The rack drives the impeller to rotate through the transmission mechanism, which in turn drives the coolant to circulate between the cooling pipe and the refrigerant tank. Combined with the cooling of the refrigerant plate, the temperature of the high-temperature oil in the auxiliary oil tank can be quickly reduced, avoiding problems such as viscosity reduction and seal failure caused by overheating of the oil, and ensuring the stable operation of the master and slave cylinders in fast-paced work.

[0021] 2. In this invention, the magnetic force of the magnetic sheet is used to automatically rotate the filter frame to fit the end of the filling valve when the oil is discharged from the auxiliary oil tank, so as to filter the oil. When the oil is fed in, the filter frame is reset and staggered, which does not affect the oil feeding speed. This can effectively remove impurities in the oil, prevent impurities from entering the master cylinder and aggravating the wear of cylinder body, piston rod and other components, extend the service life of the equipment and reduce maintenance costs.

[0022] 3. In this invention, the guide plate reduces friction by contacting the guide groove with the support wheel, ensuring smooth movement of the support. The magnetic drive of the magnetic sheet enables synchronous movement of the support and automatic switching of the filter frame. No additional power device is required, which simplifies the structure and avoids mechanical transmission jamming. The overall design makes the oil replenishment, heat dissipation, and filtration actions coordinated and efficient, improving the operational reliability of the equipment in high-frequency operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the master-slave hydraulic device proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the disassembled structure of the hydraulic cylinder body;

[0025] Figure 3 A schematic diagram showing the exploded structure of the auxiliary oil tank and filling valve;

[0026] Figure 4 This is a schematic diagram of the internal structure of the auxiliary fuel tank;

[0027] Figure 5 This is a schematic diagram of the support structure;

[0028] Figure 6 This is a schematic diagram of the internal structure of the refrigerant box;

[0029] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle;

[0030] Figure 8 This is a schematic diagram of a partial cross-section of the auxiliary fuel tank;

[0031] Figure 9 for Figure 8 Enlarged structural diagram at point B;

[0032] Figure 10 This is a schematic diagram of the structure of link one, link two, and linkage rod.

[0033] In the diagram: 11. Cylinder body; 12. Piston rod body; 13. Quick piston rod; 14. Filling valve; 21. Auxiliary oil tank; 22. Refrigerant tank; 23. Cooling pipe; 24. Refrigerant plate; 31. Guide groove one; 32. Guide groove two; 33. Guide plate; 34. Bracket; 35. Mounting plate; 36. Magnetic plate one; 37. Slot; 38. Support wheel; 39. Float plate; 41. Impeller; 42. Shaft; 43. One-way bearing; 44. Transmission gear; 45. Drive rack; 46. Clearance port; 51. Swing arm; 52. Filter frame; 53. Linkage gear; 54. Linkage rod; 55. Linkage rack; 56. Clearance groove; 61. Connecting rod one; 62. Connecting rod two; 63. Magnetic plate two; 64. Magnetic plate three. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 8The hydraulic device of the master cylinder includes a cylinder body 11 and a piston rod 12 slidably installed on the inner wall of the cylinder body 11. A quick piston rod 13 is fixedly installed on the inner wall of the cylinder body 11. An oil groove corresponding to the quick piston rod 13 is opened at the end of the piston rod 12. A filling valve 14 is provided at the pressurized oil port of the cylinder body 11. An auxiliary oil tank 21 corresponding to the filling valve 14 is provided on the outer wall of the cylinder body 11. A cooling component is provided on the auxiliary oil tank 21. A float plate 39 is provided on the inner side of the auxiliary oil tank 21.

[0036] The cooling assembly includes a refrigerant tank 22 fixedly installed on the side of the auxiliary oil tank 21. The inside of the refrigerant tank 22 is filled with coolant. Two cooling pipes 23 are symmetrically fixedly installed on the inner wall of the auxiliary oil tank 21, and both ends of the cooling pipes 23 are connected to the refrigerant tank 22. A refrigerant plate 24 is fixedly installed on the inner wall of the refrigerant tank 22. Two sets of pump structures corresponding to the cooling pipes 23 are symmetrically arranged on the inner wall of the refrigerant tank 22.

[0037] In use, the operator can install the cylinder body 11 at the usage position and install the external connecting parts of the cylinder body 11 so that the master cylinder composed of the cylinder body 11, piston rod body 12 and quick piston rod 13 can operate normally. The working principle of this part is a mature existing technology and will not be described in detail here. During the operation of the master cylinder, some of the oil can enter the auxiliary oil tank 21 through the filling valve 14, and then enter the master cylinder again from the auxiliary oil tank 21 for use.

[0038] Reference Figure 4 and Figure 5 Two sets of matching linkage components are provided between the auxiliary oil tank 21 and the cooling components. The linkage components include guide grooves 31 symmetrically opened on the inner walls of the auxiliary oil tank 21 and the refrigerant tank 22. Guide grooves 32 are opened on the inner walls of the auxiliary oil tank 21 and the refrigerant tank 22 between the two guide grooves 31. Guide plates 33 are slidably installed on the inner walls of the two guide grooves 31. Brackets 34 are fixedly installed on the sides of the two guide plates 33. Mounting plates 35 are fixedly installed on the sides of the brackets 34. Magnetic plates 36 are fixedly installed on the sides of the mounting plates 35. The magnetic poles of the magnetic plates 36 on the inner sides of the auxiliary oil tank 21 and the refrigerant tank 22 are opposite. Two slots 37 are symmetrically opened on both sides of the guide plates 33. Support wheels 38 are rotatably installed on the inner walls of the slots 37. Float plates 39 are fixedly connected to the sides of the brackets 34 located inside the auxiliary oil tank 21.

[0039] When the oil enters the auxiliary oil tank 21, initially, the float 39 is located at the bottom of the auxiliary oil tank 21 under the action of gravity. As the oil enters the auxiliary oil tank 21 through the filling valve 14, the float 39 remains at the oil surface position under the action of oil buoyancy and can move as the oil level rises. When the float 39 moves, it drives the support 34 to slide upwards along the guide groove 31 via the guide plate 33. When the guide plate 33 moves in the guide groove 31, it can contact the inner wall of the guide groove 31 through the support wheel 38 in the slot 37, reducing friction and ensuring... This ensures smoother movement of the support 34. During the movement of the support 34 in the auxiliary oil tank 21, since the two magnetic plates 36 in the auxiliary oil tank 21 and the refrigerant tank 22 are opposite to each other and have opposite magnetic poles, the support 34 in the auxiliary oil tank 21 can drive the support 34 in the refrigerant tank 22 to move synchronously along the guide groove 31 through the guide plate 33. The magnetic plate 36 is located in the guide groove 32. The opening of the guide groove 32 ensures that the two magnetic plates 36 are closer together, so as to ensure that the magnetic force can make the two supports 34 move synchronously.

[0040] Reference Figure 6 and Figure 7 The pump structure includes an impeller 41 rotatably mounted on the inner wall of the bottom end of the cooling pipe 23 via a mounting bracket. A shaft 42 is fixedly mounted on the side of the impeller 41. The end of the shaft 42 away from the impeller 41 is located on the outside of the cooling pipe 23 and is fitted with a one-way bearing 43. A transmission gear 44 is rotatably mounted on the inner wall of the refrigerant tank 22 at the top side of the guide groove 31. A drive rack 45 that meshes with the transmission gear 44 is fixedly mounted on the side of the bracket 34. The transmission gear 44 and the one-way bearing 43 are connected by a driven wheel and a synchronous belt. Two clearance openings 46 corresponding to the drive rack 45 are opened on the top surface of the refrigerant tank 22.

[0041] When the bracket 34 moves in the refrigerant tank 22, the drive rack 45 on its side can move upward synchronously. When the drive rack 45 moves upward, it can pass through the clearance port 46 and move normally. The drive rack 45 meshes with the transmission gear 44, which in turn drives the transmission gear 44 to rotate. When the transmission gear 44 rotates, it can drive the one-way bearing 43 to rotate through the driven wheel and the timing belt. This direction is the locking direction of the one-way bearing 43. Therefore, when the one-way bearing 43 rotates, it can drive the impeller 41 to rotate on the inner wall of the cooling pipe 23 through the shaft 42. When the impeller 41 rotates, it can drive the coolant in the cooling pipe 23, so that the coolant circulates in the cooling pipe 23 and the refrigerant tank 22. The refrigerant plate 24 in the refrigerant tank 22 can cool the coolant, so that the oil in the auxiliary oil tank 21 can be cooled down quickly for use.

[0042] Reference Figure 6 , Figure 8 , Figure 9 and Figure 10 A filter frame 52 is installed on the inner wall of the auxiliary oil tank 21 at the outlet of the filling valve 14. A control component is installed between the mounting plate 35 on the inner side of the refrigerant tank 22 and the filter frame 52. The control component includes a swing arm 51 that is rotatably installed on the inner wall of the auxiliary oil tank 21. One end of the filter frame 52 is fixedly connected to the swing arm 51. A linkage gear 53 is fixedly installed on the other end of the swing arm 51. A linkage rod 54 is provided through the inner wall of the auxiliary oil tank 21. One end of the linkage rod 54 is located inside the refrigerant tank 22. A linkage rack 55 that meshes with the linkage gear 53 is fixedly installed on the end of the linkage rod 54 located inside the auxiliary oil tank 21. A clearance groove 56 corresponding to the movement trajectory of the filter frame 52 is opened on the inner bottom surface of the auxiliary oil tank 21. A propulsion structure is provided between the mounting plate 35 and the linkage rod 54.

[0043] The propulsion structure includes a first connecting rod 61 fixedly installed on the end of the linkage rod 54 located inside the refrigerant box 22. A second connecting rod 62 is fixedly installed at the end of the first connecting rod 61. The ends of the first connecting rod 61 and the second connecting rod 62 away from the linkage rod 54 are located at the bottom and top of the guide groove 32, respectively, and a third magnetic sheet 64 is fixedly installed thereon. A second magnetic sheet 63 corresponding to the third magnetic sheet 64 is fixedly installed on both the bottom and top surfaces of the mounting plate 35.

[0044] As the oil enters the auxiliary oil tank 21, the position of the filter frame 52 is as follows: Figure 8 As shown, it is positioned offset from the filling valve 14, allowing the oil to be directly discharged into the auxiliary oil tank 21. As the bracket 34 moves upward, when it reaches the top of the guide groove 32, the magnetic plate 63 on the top surface of the mounting plate 35 can face the magnetic plate 64 at the end of the connecting rod 62. Since their magnetic poles are opposite, the connecting rod 62 and the linkage rod 54 can be pulled by the magnetic attraction force, causing the linkage rack 55 to move. The linkage rack 55 meshes with the linkage gear 53, which in turn drives the linkage gear 53, the swing arm 51, and the filter frame 52 to rotate. The filter frame 52 can rotate along the relief groove 56 and come into contact with the end of the filling valve 14. When the mother-daughter oil cylinder uses the oil in the auxiliary oil tank 21, the oil... During the process of draining the auxiliary oil tank 21, the oil needs to pass through the filter frame 52, which can filter the oil to ensure that impurities in the oil can be filtered out and prevent them from entering the master cylinder and aggravating the wear of the master cylinder. As the oil in the auxiliary oil tank 21 is drained, when the bracket 34 returns to the bottom of the guide groove 32, the magnetic plate 63 on the bottom surface of the mounting plate 35 can face the magnetic plate 64 at the end of the connecting rod 61. At this time, the magnetic poles of the two are the same, so under the action of the repulsive magnetic force, the linkage rod 54 can move in the opposite direction, which can drive the linkage rack 55, the linkage gear 53 and the swing arm 51 to drive the filter frame 52 to reverse and reset, so that the auxiliary oil tank 21 can be filled with oil again for use.

[0045] The specific working principle of this invention is as follows:

[0046] In use, the operator can install the cylinder body 11 at the designated location and install the external connecting parts of the cylinder body 11 to ensure the normal operation of the master cylinder consisting of the cylinder body 11, piston rod body 12, and quick piston rod 13. The working principle of this part is a mature existing technology and will not be elaborated further here. During the operation of the master cylinder, some of the oil can enter the auxiliary oil tank 21 through the filling valve 14, and then be re-entered into the master cylinder for use. When the oil enters the auxiliary oil tank 21, initially, the float 39 is located at the bottom of the auxiliary oil tank 21 under the action of gravity, and the oil flows through... When the oil enters the auxiliary oil tank 21 through the filling valve 14, the float plate 39 can always be located at the oil surface position under the action of the oil buoyancy, and can move as the oil level rises. When the float plate 39 moves, it can drive the support 34 to slide upward along the guide groove 31 through the guide plate 33. When the guide plate 33 moves in the guide groove 31, it can contact the inner wall of the guide groove 31 through the support wheel 38 in the slot 37, which reduces the friction and ensures that the movement of the support 34 is smoother. At the same time, the float plate 39 can be made of polyethylene closed-cell foam material, whose density is much smaller than that of the oil, ensuring that the float plate 39 can overcome the magnetic force and friction during operation.

[0047] During the movement of the bracket 34 in the auxiliary oil tank 21, since the two magnetic plates 36 in the auxiliary oil tank 21 and the refrigerant tank 22 are opposite in magnetic pole, under the action of the magnetic attraction, the bracket 34 in the auxiliary oil tank 21 can drive the bracket 34 in the refrigerant tank 22 to move synchronously along the guide groove 31 through the guide plate 33. The magnetic plates 36 are located in the guide groove 32. The opening of the guide groove 32 ensures that the distance between the two magnetic plates 36 is shorter, so as to ensure that the magnetic force can make the two brackets 34 move synchronously. When the bracket 34 in the refrigerant tank 22 moves, the drive rack 45 on its side can move upward synchronously, and when the drive rack 45 moves upward, it can pass through the... When the position port 46 moves normally, the drive rack 45 meshes with the transmission gear 44, which in turn drives the transmission gear 44 to rotate. When the transmission gear 44 rotates, it drives the one-way bearing 43 to rotate through the driven wheel and the synchronous belt. This direction is the locking direction of the one-way bearing 43. Therefore, when the one-way bearing 43 rotates, it drives the impeller 41 to rotate on the inner wall of the cooling pipe 23 through the shaft 42. When the impeller 41 rotates, it drives the coolant in the cooling pipe 23, so that the coolant circulates in the cooling pipe 23 and the refrigerant tank 22. The refrigerant plate 24 in the refrigerant tank 22 can cool the coolant, so that the oil in the auxiliary oil tank 21 can be cooled down quickly for use.

[0048] As the oil enters the auxiliary oil tank 21, the position of the filter frame 52 is as follows: Figure 8As shown, it is positioned offset from the filling valve 14, allowing the oil to be directly discharged into the auxiliary oil tank 21. As the bracket 34 moves upward, when it reaches the top of the guide groove 32, the magnetic plate 63 on the top surface of the mounting plate 35 can face the magnetic plate 64 at the end of the connecting rod 62. Since their magnetic poles are opposite, the connecting rod 62 and the linkage rod 54 can be pulled by the magnetic attraction force, causing the linkage rack 55 to move. The linkage rack 55 meshes with the linkage gear 53, which in turn drives the linkage gear 53, the swing arm 51, and the filter frame 52 to rotate. The filter frame 52 can rotate along the relief groove 56 and come into contact with the end of the filling valve 14. When the mother-daughter oil cylinder uses the oil in the auxiliary oil tank 21, the oil... During the process of draining the auxiliary oil tank 21, the oil needs to pass through the filter frame 52, which can filter the oil to ensure that impurities in the oil can be filtered out and prevent them from entering the master cylinder and aggravating the wear of the master cylinder. As the oil in the auxiliary oil tank 21 is drained, when the bracket 34 returns to the bottom of the guide groove 32, the magnetic plate 63 on the bottom surface of the mounting plate 35 can face the magnetic plate 64 at the end of the connecting rod 61. At this time, the magnetic poles of the two are the same, so under the action of the repulsive magnetic force, the linkage rod 54 can move in the opposite direction, which can drive the linkage rack 55, the linkage gear 53 and the swing arm 51 to drive the filter frame 52 to reverse and reset, so that the auxiliary oil tank 21 can be filled with oil again for use.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A master-slave hydraulic device, comprising a cylinder body (11) and a piston rod body (12) slidably mounted on the inner wall of the cylinder body (11), wherein a quick piston rod (13) is fixedly mounted on the inner wall of the cylinder body (11), and an oil groove corresponding to the quick piston rod (13) is opened at the end of the piston rod body (12), a filling valve (14) is provided at the pressurized oil port of the cylinder body (11), and an auxiliary oil tank (21) corresponding to the filling valve (14) is provided on the outer wall of the cylinder body (11), characterized in that, The auxiliary oil tank (21) is equipped with a cooling component, and a float plate (39) is provided on the inner side of the auxiliary oil tank (21). Two sets of matching linkage components are provided between the auxiliary oil tank (21) and the cooling component. The cooling assembly includes a refrigerant tank (22) fixedly installed on the side of the auxiliary oil tank (21). Two cooling pipes (23) are symmetrically fixedly installed on the inner wall of the auxiliary oil tank (21), and both ends of the cooling pipes (23) are connected to the refrigerant tank (22). A refrigerant plate (24) is fixedly installed on the inner wall of the refrigerant tank (22). Two sets of pump liquid structures corresponding to the cooling pipes (23) are symmetrically arranged on the inner wall of the refrigerant tank (22). The linkage component includes a guide groove 1 (31) symmetrically opened on the inner wall of the auxiliary oil tank (21) and the refrigerant tank (22) in contact with each other. A guide groove 2 (32) is opened on the inner wall of the auxiliary oil tank (21) and the refrigerant tank (22) between the two guide grooves 1 (31). A guide plate (33) is slidably installed on the inner wall of the two guide grooves 1 (31). A bracket (34) is fixedly installed on the side of the two guide plates (33). An installation plate (35) is fixedly installed on the side of the bracket (34). A magnetic sheet 1 (36) is fixedly installed on the side of the installation plate (35). The float plate (39) is fixedly connected to the side of the bracket (34) located inside the auxiliary oil tank (21). The pump structure includes an impeller (41) that is rotatably mounted on the inner wall of the bottom end of the cooling pipe (23) via a mounting bracket. A shaft (42) is fixedly mounted on the side of the impeller (41). The end of the shaft (42) away from the impeller (41) is located on the outside of the cooling pipe (23) and fitted with a one-way bearing (43). A transmission gear (44) is rotatably mounted on the inner wall of the refrigerant tank (22) at the top side of the guide groove (31). A drive rack (45) that meshes with the transmission gear (44) is fixedly mounted on the side of the bracket (34). The transmission gear (44) and the one-way bearing (43) are connected by a driven wheel and a synchronous belt.

2. The hydraulic device for master and slave cylinders according to claim 1, characterized in that, The inside of the refrigerant box (22) is filled with coolant.

3. The hydraulic device for master and slave cylinders according to claim 1, characterized in that, The magnetic poles of the auxiliary oil tank (21) and the magnetic plate (36) inside the refrigerant tank (22) are opposite.

4. The hydraulic device for master and slave cylinders according to claim 1, characterized in that, The guide plate (33) has two symmetrical slots (37) on both sides, and the inner wall of the slot (37) is rotatably equipped with a support wheel (38).

5. The hydraulic device for master and slave cylinders according to claim 1, characterized in that, The top surface of the refrigerant box (22) has two clearance openings (46) corresponding to the drive rack (45).

6. The hydraulic device for master and slave cylinders according to claim 1, characterized in that, A filter frame (52) is provided on the inner wall of the auxiliary oil tank (21) at the outlet of the filling valve (14), and a control component is provided between the mounting plate (35) on the inner side of the refrigerant tank (22) and the filter frame (52).

7. The hydraulic device for master and slave cylinders according to claim 6, characterized in that, The control component includes a swing arm (51) rotatably mounted on the inner wall of the auxiliary oil tank (21), and the filter frame (52) is fixedly connected to one end of the swing arm (51). A linkage gear (53) is fixedly mounted on the other end of the swing arm (51). A linkage rod (54) is provided through the inner wall of the auxiliary oil tank (21), and one end of the linkage rod (54) is located inside the refrigerant box (22). A linkage rack (55) that meshes with the linkage gear (53) is fixedly mounted on the end of the linkage rod (54) located inside the auxiliary oil tank (21). A clearance groove (56) corresponding to the moving trajectory of the filter frame (52) is opened on the inner bottom surface of the auxiliary oil tank (21). A propulsion structure is provided between the mounting plate (35) and the linkage rod (54).

8. The hydraulic device for master and slave cylinders according to claim 7, characterized in that, The propulsion structure includes a connecting rod 1 (61) fixedly installed on the inner end of the linkage rod (54) located inside the refrigerant box (22). A connecting rod 2 (62) is fixedly installed at the end of the connecting rod 1 (61). The ends of the connecting rod 1 (61) and the connecting rod 2 (62) away from the linkage rod (54) are respectively located at the bottom and top of the guide groove 2 (32) and are fixedly installed with magnetic sheet 3 (64). The bottom and top surfaces of the mounting plate (35) are both fixedly installed with magnetic sheet 2 (63) corresponding to magnetic sheet 3 (64).

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