Wear-resistant piston rod

Abstract

The utility model discloses a wear-resistant piston rod, relates to the technical field of piston rods, and solves the problems that a piston in the piston rod is inconvenient to disassemble and replace and the service life of the piston is short. Comprising a piston rod protection sleeve, a detachable piston rod body, a detachable frame, a sliding fixing plate, a fixing rotary knob, a bottom mounting position, a first valve, a second valve, a top mounting position and a sealing layer, the detachable piston rod body is movably arranged in the piston rod protection sleeve, and the upper portion of the detachable piston rod body is fixedly connected to the top mounting position; the lower portion of the piston rod protection sleeve is fixedly connected to the bottom installation position, and one side of the upper portion of the piston rod protection sleeve is fixedly connected to a first valve. According to the wear-resistant piston rod, the detachable wear-resistant piston can be detached and replaced through the detachable piston rod body, the wear-resistant piston rod is resistant to wear, the service life of a product can be prolonged in the mode that the detachable wear-resistant piston is rapidly replaced, and the maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of cutting, in particular to a wear-resistant piston rod. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is mostly used in oil cylinders and cylinder motion actuators. It is a moving component with frequent movements and high technical requirements. Taking the hydraulic cylinder as an example, it is composed of the cylinder barrel, piston rod, piston, and end cover. The quality of its processing directly affects the life and reliability of the entire product. The processing requirements of the piston rod are high, and the coaxiality and wear resistance are strictly required. The piston rod is mainly used in hydraulic pneumatics, engineering machinery, and automobile manufacturing piston rods, guide columns of plastic machinery, rollers of packaging machinery and printing machinery, axes of textile machinery and conveying machinery, and linear optical axes for linear motion.

[0003] Chinese utility model CN115978046A discloses a wear-resistant piston rod, comprising a mounting ring, a joint, a piston main rod, a piston mechanism, a damping inner core and a connecting base, characterized in that: a joint is installed at the lower end of the mounting ring, a piston main rod is installed at the lower end of the joint, a piston mechanism is installed on the outer side of the piston main rod, a damping inner core is installed at the lower end of the piston mechanism, and a connecting base is installed at the lower end of the damping inner core. The piston mechanism comprises a dust ring, an upper piston ring, a movable shell, a main shell, a rolling assembly, a spacer, a side piston chamber, a connecting plate, a slow-release block, a lower piston ring, a lower pressure chamber, an airbag seat, a pressure plate, a pressure head, a guide column, a side piston ring, a side piston rod, a spring, a head seat, a grid, a deformation shell, a main seat body, a ball, a central axis clip, a rubber sealing ring, a fixed arc plate and a sealing ring gasket, and the damping inner core comprises a pad, a gasket, a base, a pressure column, a damping seat and an external thread.

[0004] In the process of realizing the present invention, the inventors found that there are at least the following problems in this technology: the existing wear-resistant piston rod only replaces some piston parts that are subject to more wear with more durable materials, but in essence it only extends the service life. After all, the internal parts still need to be replaced, and it is more troublesome to disassemble and replace the internal parts of the existing wear-resistant piston rod. After the piston of this wear-resistant piston rod reaches the end of its service life, it is convenient to replace it, which can save maintenance time and improve the use efficiency. Therefore, a wear-resistant piston rod is now proposed. Utility Model Content

[0005] In order to improve the problem that the piston inside the piston rod is inconvenient to disassemble and replace and the service life of the piston, the utility model provides a wear-resistant piston rod.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a wear-resistant piston rod, including a piston rod protective sleeve, a detachable piston rod body, a disassembly frame, a sliding fixing plate, a fixing knob, a bottom mounting point, a first valve, a second valve, a top mounting point and a sealing layer. The detachable piston rod body is movable inside the piston rod protective sleeve, the upper part of the detachable piston rod body is fixedly connected to the top mounting point, and the lower part of the piston rod protective sleeve is fixedly connected to the bottom mounting point.

[0007] By adopting the above technical solution, the detachable piston rod body can realize the disassembly and replacement of the detachable wear-resistant piston. It is not only wear-resistant itself, but also can increase the service life of the product and reduce maintenance time by quickly replacing the detachable wear-resistant piston.

[0008] Optionally, the upper side of the piston rod protection sleeve is fixedly connected to the first valve, the lower side of the piston rod protection sleeve is fixedly connected to the second valve, and a disassembly frame is movable on the surface of the piston rod protection sleeve.

[0009] By adopting the above technical solution, the disassembly frame is used to open an opening on the surface of the piston rod protective sleeve for replacing the detachable wear-resistant piston of the internal detachable piston rod body.

[0010] Optionally, the lower portion of the detachable piston rod body is fixedly connected to a mounting plate, the lower portion of the mounting plate is detachable from the detachable wear-resistant piston, and the mounting plate and the detachable wear-resistant piston are fixed by screws.

[0011] By adopting the above technical solution, the detachable wear-resistant piston is connected to the mounting plate through multiple sets of screws, which makes it convenient for staff to disassemble the detachable wear-resistant piston in a simple manner.

[0012] Optionally, a rotating shaft is installed between the disassembly frame and the piston rod protective sleeve, and the disassembly frame is movable on one side of the piston rod protective sleeve through the rotating shaft, and a fixing groove is opened above the disassembly frame.

[0013] By adopting the above technical solution, after the disassembly frame is opened, the detachable piston rod body, the mounting plate, and the detachable wear-resistant piston can be seen. The detachable piston rod body can be easily disassembled by gradually removing the screws on the mounting plate using the corresponding L-shaped screwdriver and by rotating the detachable piston rod body.

[0014] Optionally, a movable groove is provided on the front of the piston rod protective sleeve, a fixed knob is provided on the front of the sliding fixed plate, the bottom of the sliding fixed plate is fixedly connected to a fixed pin, a left fixed groove is provided on the left side of the movable groove, and a right fixed groove is provided on the right side of the movable groove.

[0015] By adopting the above technical solution, the fixing knob is used to further fix the sliding fixing plate, so that the sliding fixing plate can maintain the fixation of the disassembly frame.

[0016] Optionally, a sealing layer is installed on one side of the piston rod protective sleeve, and a sealing layer is installed on one side of the disassembly frame. The two sets of sealing layers are mutually ground together, and the detachable wear-resistant piston moves inside the piston rod protective sleeve.

[0017] By adopting the above technical solution, the sealing layer is used to form a sealed environment between the piston rod protective sleeve and the disassembly frame to prevent leakage.

[0018] Optionally, the two sides of the sliding fixed plate are fixedly connected to the limit bars, the limit bars are movable on both sides of the movable groove, the left side of the sliding fixed plate is movable with a left fixed column, the right side of the sliding fixed plate is movable with a right fixed column, and the fixing pin is detachable inside the fixing groove.

[0019] By adopting the above technical solution, the sliding fixing plate is used to fix the disassembly frame after it is closed, preventing the disassembly frame from being easily opened, and enhancing the air tightness inside the piston rod protective sleeve.

[0020] Optionally, one side of the fixing knob is fixedly connected to the gear device, an upper tooth group is movable above the gear device, and a lower tooth group is movable below the gear device, the upper tooth group is fixedly connected below the right fixed column, and the lower tooth group is fixedly connected above the left fixed column, the right fixed column is detachable inside the right fixed slot, and the left fixed column is detachable inside the left fixed slot.

[0021] By adopting the above technical solution, when disassembling the removable wear-resistant piston, the fixing knob is turned to make the gear device engage with the upper tooth group and the lower tooth group, so that the left fixing column and the right fixing column leave the left fixing groove and the right fixing groove. At this time, the fixing knob can be pushed up to drive the sliding fixing plate to move to the top of the movable groove. At this time, the fixing pin leaves the inside of the fixing groove, and the disassembly frame can be pulled open to disassemble and replace the removable wear-resistant piston. The operation is simple and convenient.

[0022] In summary, the present invention has the following beneficial effects:

[0023] The utility model can realize the disassembly and replacement of the detachable wear-resistant piston through the detachable piston rod body. It is not only wear-resistant itself, but also can prolong the service life of the product and reduce maintenance time by quickly replacing the detachable wear-resistant piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a wear-resistant piston rod of the utility model;

[0025] Figure 2This is a schematic diagram of the internal structure of a wear-resistant piston rod of the utility model;

[0026] Figure 3 This is a schematic diagram of a disassembly frame structure of a wear-resistant piston rod of the utility model;

[0027] Figure 4 This is a schematic structural diagram of a sliding fixing plate of a wear-resistant piston rod of the utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of a sliding fixing plate of a wear-resistant piston rod of the utility model.

[0029] In the figure: 1. Piston rod protective sleeve; 11. Movable groove; 12. Left fixed groove; 13. Right fixed groove; 2. Removable piston rod body; 21. Mounting plate; 22. Removable wear-resistant piston; 3. Disassembly frame; 31. Rotating shaft; 32. Fixed groove; 4. Sliding fixed plate; 41. Fixed pin; 42. Limiting strip; 43. Left fixed column; 44. Right fixed column; 5. Fixed knob; 51. Gear device; 52. Upper gear group; 53. Lower gear group; 6. Bottom mounting point; 7. First valve; 8. Second valve; 9. Top mounting point; 10. Sealing layer. DETAILED DESCRIPTION

[0030] The following is in conjunction with the appended drawings in the embodiment of the present utility model. Figure 1-5 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0031] Please refer to Figure 1 , a wear-resistant piston rod, including a piston rod protective sleeve 1, a detachable piston rod body 2, a disassembly frame 3, a sliding fixing plate 4, a fixing knob 5, a bottom mounting point 6, a first valve 7, a second valve 8, a top mounting point 9 and a sealing layer 10. The top of the detachable piston rod body 2 is fixedly connected to the top mounting point 9, and the bottom of the piston rod protective sleeve 1 is fixedly connected to the bottom mounting point 6. The detachable piston rod body 2 can realize the disassembly and replacement of the detachable wear-resistant piston 22. It is not only wear-resistant itself, but also can prolong the service life of the product by quickly replacing the detachable wear-resistant piston 22. This simple and convenient sliding method can also reduce maintenance time, so that the device can continue to be used faster.

[0032] Reference Figure 1 and Figure 2The lower part of the detachable piston rod body 2 is fixedly connected to the mounting plate 21, and the lower part of the mounting plate 21 is detachable to the detachable wear-resistant piston 22. The mounting plate 21 and the detachable wear-resistant piston 22 are fixed by screws. The detachable wear-resistant piston 22 is connected to the mounting plate 21 by multiple sets of screws, which is convenient for the staff to disassemble the detachable wear-resistant piston 22 in a simple way. The detachable wear-resistant piston 22 is the main loss-making component of the device and has a quick and simple replacement method to meet the needs of different usage environments. A disassembly frame 3 is movable on the surface of the piston rod protective sleeve 1. The disassembly frame 3 is used to open an opening on the surface of the piston rod protective sleeve 1 for replacing the detachable wear-resistant piston 22 of the internal detachable piston rod body 2. The upper side of the piston rod protective sleeve 1 is fixedly connected to the first valve 7, and the lower side of the piston rod protective sleeve 1 is fixedly connected to the second valve 8.

[0033] Reference Figure 3 、 Figure 4 and Figure 5A rotating shaft 31 is installed between the disassembly frame 3 and the piston rod protection sleeve 1, and the disassembly frame 3 is movable on one side of the piston rod protection sleeve 1 through the rotating shaft 31. A fixing groove 32 is provided on the top of the disassembly frame 3. After the disassembly frame 3 is opened, the detachable piston rod body 2, the mounting plate 21, and the detachable wear-resistant piston 22 can be seen. By using the corresponding L-shaped screwdriver and rotating the detachable piston rod body 2, the screws on the mounting plate 21 can be gradually removed for simple disassembly. A movable groove 11 is provided on the front of the piston rod protection sleeve 1, a left fixing groove 12 is provided on the left side of the movable groove 11, and a right fixing groove 13 is provided on the right side of the movable groove 11. A sealing layer 1 is installed on one side of the piston rod protection sleeve 1 0, a sealing layer 10 is installed on one side of the disassembly frame 3, and the two sets of sealing layers 10 are worn into each other. The sealing layer 10 is used to form a sealed environment between the piston rod protective sleeve 1 and the disassembly frame 3 to ensure that the detachable wear-resistant piston 22 of the device will not leak after the replacement is completed and the fixation is completed, thereby enhancing the reliability of the device. The detachable wear-resistant piston 22 moves inside the piston rod protective sleeve 1, and the lower part of the sliding fixing plate 4 is fixedly connected to the fixed pin 41. The sliding fixing plate 4 is used to fix the disassembly frame 3 after it is closed to prevent the disassembly frame 3 from being easily opened, thereby enhancing the airtightness inside the piston rod protective sleeve 1. The two sides of the sliding fixing plate 4 are fixedly connected to the limit strips 4 2. The limit bar 42 is movable on both sides of the movable groove 11. The left side of the sliding fixed plate 4 is movable with a left fixed column 43, and the right side of the sliding fixed plate 4 is movable with a right fixed column 44. The fixed pin 41 is detachable inside the fixed groove 32. The front of the sliding fixed plate 4 is movable with a fixed knob 5. The fixed knob 5 is used to further fix the sliding fixed plate 4 so that the sliding fixed plate 4 can maintain the fixation of the disassembly frame 3. One side of the fixed knob 5 is fixedly connected to the gear device 51. An upper tooth group 52 is movable above the gear device 51, and a lower tooth group 53 is movable below the gear device 51. The upper tooth group 52 is fixedly connected to the bottom of the right fixed column 44, and the lower tooth group 53 is fixedly connected to the top of the left fixed column 43. The right fixed column 44 is detachable inside the right fixed groove 13, and the left fixed column 43 is detachable inside the left fixed groove 12. The removable piston rod body 2 is movable inside the piston rod protective sleeve 1. When removing the removable wear-resistant piston 22, the fixing knob 5 is turned to make the gear device 51 engage with the upper tooth group 52 and the lower tooth group 53, so that the left fixed column 43 and the right fixed column 44 leave the left fixed groove 12 and the right fixed groove 13. At this time, the fixing knob 5 can be pushed up to drive the sliding fixing plate 4 to move to the top of the movable groove 11. At this time, the fixing pin 41 leaves the inside of the fixed groove 32, and the disassembly frame 3 can be pulled open to remove and replace the removable wear-resistant piston 22. The operation is simple and convenient.

[0034] The implementation principle of the present invention is as follows: the detachable piston rod body 2 can realize the detachable and replaceable wear-resistant piston 22, which is not only wear-resistant itself, but also can prolong the service life of the product and reduce maintenance time by quickly replacing the detachable wear-resistant piston 22. When disassembling the detachable wear-resistant piston 22, the fixing knob 5 is turned so that the gear device 51 is engaged with the upper tooth group 52 and the lower tooth group 53, so that the left fixing column 43 and the right fixing column 44 leave the left fixing groove 12 and the right fixing groove 13. At this time, the fixing knob 5 can be pushed up to drive the slide The movable fixing plate 4 moves to the top of the movable groove 11. At this time, the fixing pin 41 leaves the inside of the fixing groove 32, and the disassembly frame 3 can be pulled open. The detachable wear-resistant piston 22 is removed from the bottom of the mounting plate 21 by a tool and replaced with a new detachable wear-resistant piston 22. The operation is simple and convenient. After a long period of use of this device, the detachable wear-resistant piston 22, as the main accessory of wear, reaches its maximum service life. At this time, the detachable wear-resistant piston 22 can be quickly disassembled for replacement, ensuring that the device can continue to be used, and has a good prospect of use.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wear-resistant piston rod, comprising a piston rod protective sleeve (1), a detachable piston rod body (2), a disassembly frame (3), a sliding fixing plate (4), a fixing knob (5), a bottom mounting portion (6), a first valve (7), a second valve (8), a top mounting portion (9) and a sealing layer (10), characterized in that: A detachable piston rod body (2) is movable inside the piston rod protection sleeve (1); the upper portion of the detachable piston rod body (2) is fixedly connected to the top mounting portion (9); and the lower portion of the piston rod protection sleeve (1) is fixedly connected to the bottom mounting portion (6).

2. The wear-resistant piston rod according to claim 1, characterized in that: The upper side of the piston rod protective sleeve (1) is fixedly connected to the first valve (7), and the lower side of the piston rod protective sleeve (1) is fixedly connected to the second valve (8). A disassembly frame (3) is movable on the surface of the piston rod protective sleeve (1).

3. The wear-resistant piston rod according to claim 2, characterized in that: The lower portion of the detachable piston rod body (2) is fixedly connected to the mounting plate (21), and the lower portion of the mounting plate (21) is detachable from the detachable wear-resistant piston (22). The mounting plate (21) and the detachable wear-resistant piston (22) are fixed by screws.

4. The wear-resistant piston rod according to claim 3, characterized in that: A rotating shaft (31) is installed between the disassembly frame (3) and the piston rod protective sleeve (1), and the disassembly frame (3) is movable on one side of the piston rod protective sleeve (1) via the rotating shaft (31). A fixing groove (32) is provided above the disassembly frame (3).

5. The wear-resistant piston rod according to claim 4, characterized in that: The piston rod protective sleeve (1) is provided with a movable groove (11) on the front side, the sliding fixed plate (4) is provided with a movable fixed knob (5) on the front side, the sliding fixed plate (4) is fixedly connected to a fixed pin (41) at the bottom, a left fixed groove (12) is provided on the left side of the movable groove (11), and a right fixed groove (13) is provided on the right side of the movable groove (11).

6. The wear-resistant piston rod according to claim 5, characterized in that: A sealing layer (10) is installed on one side of the piston rod protective sleeve (1), and a sealing layer (10) is installed on one side of the disassembly frame (3). The two sets of sealing layers (10) are mutually worn, and the detachable wear-resistant piston (22) moves inside the piston rod protective sleeve (1).

7. The wear-resistant piston rod according to claim 6, characterized in that: Both sides of the sliding fixed plate (4) are fixedly connected to the limiting bars (42), and the limiting bars (42) are movable on both sides of the movable groove (11). The left side of the sliding fixed plate (4) is movable with a left fixed column (43), and the right side of the sliding fixed plate (4) is movable with a right fixed column (44). The fixing pin (41) is detachable inside the fixing groove (32).

8. The wear-resistant piston rod according to claim 7, characterized in that: One side of the fixed knob (5) is fixedly connected to the gear device (51), an upper tooth group (52) is movable above the gear device (51), and a lower tooth group (53) is movable below the gear device (51), the upper tooth group (52) is fixedly connected below the right fixed column (44), and the lower tooth group (53) is fixedly connected above the left fixed column (43), the right fixed column (44) is detachable inside the right fixed slot (13), and the left fixed column (43) is detachable inside the left fixed slot (12).

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