A dual piston hydraulic cylinder

Abstract

The utility model discloses a kind of double-piston hydraulic cylinders, belong to hydraulic cylinder technical field, including hydraulic cylinder body and cleaning mechanism, and cleaning structure is provided with two groups, cleaning mechanism includes the connecting seat of symmetrical distribution on the surface of hydraulic cylinder body, the inner side wall of connecting seat is provided with connecting assembly, connecting seat one end integrally formed has fixed seat, the surface of fixed seat is provided with adjusting groove, the inner chamber of adjusting groove is provided with the adjusting seat compatible with adjusting groove, the surface of adjusting seat is fixed with support seat by welding, the surface of support seat is provided with arc slot, the inner chamber of arc slot is bolted with the cleaning block for cleaning dust impurities on the surface of piston rod, the inner side wall of support seat is provided with the combination structure for facilitating combination, realize the cleaning work of double-piston hydraulic cylinder piston rod by above-mentioned scheme, avoid impurities along piston rod into the interior of hydraulic cylinder, reduce the image to equipment normal operation, prolong the service life of hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically a double-piston hydraulic cylinder. Background Technology

[0002] In the field of long piston rod power hydraulic cylinders, dual-piston hydraulic cylinders are widely used in heavy machinery, mining equipment, large machine tools, and other applications requiring high thrust and long stroke due to their ability to provide stronger and more balanced power output. Their dual-piston structure effectively improves the working efficiency and operational stability of the hydraulic cylinder, meeting the stringent requirements for power transmission under complex working conditions.

[0003] However, in practical applications, due to the long stroke of the piston rod and the presence of dust, oil, metal shavings, and other impurities in the working environment, these impurities easily adhere to the surface of the piston rod during repeated extension and retraction. If these impurities are not cleaned in time, they will enter the hydraulic cylinder as the piston rod moves, which will aggravate the wear between the piston and the cylinder, leading to a decrease in sealing performance and causing hydraulic oil leakage, insufficient pressure, and other faults. In severe cases, it may even cause the hydraulic cylinder to jam, affecting the normal operation of the equipment and significantly shortening the service life of the hydraulic cylinder. Therefore, we need to propose a double-piston hydraulic cylinder. Utility Model Content

[0004] The purpose of this invention is to provide a double-piston hydraulic cylinder. By employing two sets of cleaning mechanisms, the piston rods on both sides of the double-piston hydraulic cylinder can be cleaned separately. The connecting components allow for the assembly and disassembly of the cleaning mechanisms and the hydraulic cylinder body. The combined structure also allows for the assembly or separation of the support seats, facilitating the disassembly and maintenance of the cleaning mechanisms. This solution effectively cleans the piston rods of the double-piston hydraulic cylinder, preventing impurities from entering the cylinder along the piston rods, reducing the impact on normal equipment operation, and extending the service life of the hydraulic cylinder, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-piston hydraulic cylinder, comprising a hydraulic cylinder body and a cleaning mechanism for cleaning the piston rod of the hydraulic cylinder, wherein the cleaning mechanism is provided in two sets. The cleaning mechanism includes connecting seats symmetrically distributed on the surface of the hydraulic cylinder body. The inner sidewall of the connecting seat is provided with a connecting component for connecting with the hydraulic cylinder. One end of the connecting seat is integrally formed with a fixing seat. The surface of the fixing seat is provided with an adjustment groove. The inner cavity of the adjustment groove is provided with an adjustment seat adapted to the adjustment groove. A support seat is welded and fixed to the surface of the adjustment seat. The support seat is L-shaped. The surface of the support seat is provided with an arc-shaped groove. The inner cavity of the arc-shaped groove is bolted with a cleaning block for cleaning dust and impurities on the surface of the piston rod. The inner sidewall of the support seat is provided with a combination structure for easy assembly.

[0006] Preferably, the connecting assembly includes a mounting base, which is bolted to the surface of the hydraulic cylinder body. The surface of the mounting base has a connecting groove that matches the connecting base, and the connecting base is I-shaped. The top of the mounting base has a positioning structure for positioning the connecting base.

[0007] Preferably, the positioning structure includes a positioning hole at the top of the mounting base, and the positioning hole communicates with the inner cavity of the connecting groove. A positioning pin is inserted and slidably connected to the inner cavity of the positioning hole, and a fixing hole adapted to the positioning pin is provided on the surface of the connecting base.

[0008] Preferably, the fixing holes are provided in several groups, and the several groups of fixing holes are distributed at equal intervals on the surface of the connector. The surface of the connector is also provided with scale lines corresponding to the positions of the fixing holes.

[0009] Preferably, the positioning pin is a metal pin, and a magnet is magnetically connected to the surface of the positioning pin, the magnet being connected to the inner cavity of the fixing hole.

[0010] Preferably, the surface of the adjusting seat is integrally formed with a support sleeve, the inner cavity of the support sleeve is provided with a support rod adapted to the support sleeve, and the support rod is screwed into the inner cavity of the adjusting groove.

[0011] Preferably, the combined structure includes a support column, which is integrally formed on the inner wall of one set of support seats, and the inner wall of the other set of support seats is provided with a support hole adapted to the support column.

[0012] Preferably, the surface of the support base is provided with bolt holes, and the two sets of bolt holes are fixed together by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a dual-piston hydraulic cylinder. Through the arrangement of connecting components, the cleaning mechanism and the hydraulic cylinder body can be combined and disassembled. The combined structure allows the support seats to be combined or separated, facilitating the disassembly and maintenance of the cleaning mechanism. With the inclusion of cleaning blocks, the two sets of support seats are combined, and the two sets of cleaning blocks wrap around the outer surface of the piston rod. When the piston rod moves, the friction between the cleaning blocks and the piston rod surface cleans impurities from the piston rod. This solution effectively cleans the piston rod of the dual-piston hydraulic cylinder, preventing impurities from entering the hydraulic cylinder along the piston rod, reducing the impact on normal equipment operation, and extending the service life of the hydraulic cylinder.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the connector and mounting base after disassembly. Figure 3 This is a schematic diagram of the structure of the two sets of support seats after separation. Figure 4 This is a schematic diagram of the connecting seat and fixing seat of this utility model.

[0016] In the diagram: 1. Hydraulic cylinder body; 2. Connecting seat; 3. Connecting assembly; 31. Mounting seat; 32. Connecting groove; 33. Positioning hole; 34. Positioning pin; 35. Fixing hole; 4. Fixing seat; 5. Adjusting groove; 6. Adjusting seat; 7. Support seat; 8. Cleaning block; 10. Support sleeve; 11. Support rod; 12. Support column; 13. Support hole; 14. Bolt hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a double-piston hydraulic cylinder, including a hydraulic cylinder body 1 and a cleaning mechanism for cleaning the piston rod of the hydraulic cylinder. The cleaning mechanism is provided in two sets. The cleaning mechanism includes connecting seats 2 symmetrically distributed on the surface of the hydraulic cylinder body 1. The inner side wall of the connecting seat 2 is provided with a connecting component 3 for connecting with the hydraulic cylinder. One end of the connecting seat 2 is integrally formed with a fixing seat 4. The surface of the fixing seat 4 is provided with an adjustment groove 5. The inner cavity of the adjustment groove 5 is provided with an adjustment seat 6 that is adapted to the adjustment groove 5. The surface of the adjustment seat 6 is welded and fixed with a support seat 7. The support seat 7 is L-shaped. The surface of the support seat 7 is provided with an arc groove. The inner cavity of the arc groove is bolted with a cleaning block 8 for cleaning dust and impurities on the surface of the piston rod. The inner side wall of the support seat 7 is provided with a combination structure that is convenient for assembly. In use, firstly, the connecting seat 2 is connected to the hydraulic cylinder body 1 via the connecting assembly 3. Then, the support seats 7 on both sides are pushed together. When the support seats 7 move, the adjusting seat 6 slides in the adjusting groove 5. After the support seats 7 are combined, the two sets of positions with support seats 7 are fixed by the combination mechanism, so that the cleaning block 8 can wrap around the piston rod of the hydraulic cylinder. When the piston end of the hydraulic cylinder retracts, the surface of the retracted piston rod can be cleaned by the cleaning block 8 to block impurities. The above scheme achieves the cleaning of the piston rod of the double piston hydraulic cylinder, preventing impurities from entering the hydraulic cylinder along the piston rod, reducing the impact on the normal operation of the equipment, and extending the service life of the hydraulic cylinder.

[0019] The connecting component 3 includes a mounting base 31, which is bolted to the surface of the hydraulic cylinder body 1. The surface of the mounting base 31 has a connecting groove 32 that matches the connecting seat 2, and the connecting seat 2 is I-shaped. The top of the mounting base 31 has a positioning structure for positioning the connecting seat 2. After the mounting base 31 is installed on the hydraulic cylinder body, the connecting seat 2 is then removed and inserted into the inner cavity of the connecting groove 32. After the connecting seat 2 is inserted into place, the positioning structure positions the connecting seat 2 in the connecting groove 32, realizing the combination operation of the connecting seat 2 and the mounting base 31. During disassembly, it is only necessary to cancel the positioning of the connecting seat 2 through the positioning structure to separate the connecting seat 2 from the mounting base 31, which provides convenience for the disassembly and assembly of the cleaning mechanism.

[0020] The positioning structure includes a positioning hole 33 at the top of the mounting base 31, which communicates with the inner cavity of the connecting groove 32. A positioning pin 34 is slidably inserted into the inner cavity of the positioning hole 33. A fixing hole 35 that matches the positioning pin 34 is provided on the surface of the connecting base 2. After the connecting base 2 is inserted into the inner cavity of the connecting groove 32, the positioning hole 33 and the fixing hole 35 are aligned. Then, the positioning pin 34 is taken out and inserted into the positioning hole 33 at the top of the mounting base 31, extending downward to the inner cavity of the fixing hole 35. This positions the connecting base 2 in the connecting groove 32. The connecting base 2 can be released by pulling out the positioning pin 34 and can be taken out of the connecting groove 32.

[0021] Several sets of fixing holes 35 are provided, and these sets of fixing holes 35 are evenly distributed on the surface of the connecting seat 2. The surface of the connecting seat 2 is also provided with scale lines corresponding to the positions of the fixing holes 35. The fixing holes 35 provide multiple positioning positions for the connecting seat 2. The scale lines on the surface of the connecting seat 2 correspond to the positions of the fixing holes 35, which makes it easy to accurately determine the position of the fixing holes 35 according to the scale lines when adjusting the position of the connecting seat 2. The multiple sets of fixing holes 35 increase the flexibility of the position adjustment of the connecting seat 2 and can adapt to different cleaning needs.

[0022] The positioning pin 34 is a metal pin, and a magnet is magnetically connected to the surface of the positioning pin 34. The magnet is connected to the inner cavity of the fixing hole 35. When the positioning pin 34 is inserted into the inner cavity of the fixing hole 35, it is magnetically connected to the magnet, which further fixes the position of the positioning pin 34 and prevents the positioning pin 34 from falling off during the operation of the hydraulic cylinder. The magnetic attraction of the magnet enhances the stability of the positioning pin 34 and avoids the positioning pin 34 from loosening or falling off due to vibration or other reasons. This ensures the stability of the connecting seat 2 and improves the reliability of the cleaning mechanism.

[0023] The surface of the adjusting seat 6 is integrally formed with a support sleeve 10. The inner cavity of the support sleeve 10 is provided with a support rod 11 that is adapted to the support sleeve 10. The support rod 11 is screwed into the inner cavity of the adjusting groove 5. Through the cooperation of the support sleeve 10 and the support rod 11, the position adjustment of the support seat 7 is more stable and precise. When the adjusting seat 6 moves, it drives the support sleeve 10 to slide on the surface of the support rod 11.

[0024] The combined structure includes a support column 12, which is integrally formed on the inner wall of one set of support seats 7. The inner wall of the other set of support seats 7 is provided with a support hole 13 that is adapted to the support column 12. When the two sets of support seats 7 are combined, the support column 12 is inserted into the inner cavity of the support hole 13 at the same time, completing the initial combination with the support seats 7 and realizing the support at the connection of the two sets of support seats 7.

[0025] Bolt holes 14 are provided on the surface of the support base 7. The two sets of bolt holes 14 are fixed together by bolts. After the bolt holes 14 on the surfaces of the two sets of support base 7 are aligned, the bolts pass through the bolt holes 14 and are tightened to firmly connect the two sets of support base 7 together, so that the two sets of support base 7 remain synchronous and stable during operation. The bolt connection method is simple and reliable, and is easy to disassemble and install. When it is necessary to replace the cleaning block 8 or maintain the support base 7.

[0026] In practical use: First, fix the mounting base 31 to the hydraulic cylinder with bolts. Then, insert the connecting base 2 into the inner cavity of the connecting groove 32. Adjust the position of the connecting base 2 so that the positioning hole 33 is aligned with the position of the fixing hole 35. Then, take the positioning pin 34 and insert it into the positioning hole 33 at the top of the mounting base 31, extending it to the inner cavity of the fixing hole 35 to position the connecting base 2 in the connecting groove 32. Then, push the support bases 7 on both sides to move inward. When the support bases 7 move, they will drive the adjusting base 6 to move in the adjusting groove 5. After the two sets of support bases 7 are combined, the support column 12 is inserted into the inner cavity of the support hole 13, so that the two sets of support bases 7 can be initially combined, so that the cleaning block 8 can wrap the piston rod. Then, take the bolt, pass it through the bolt hole 14 and tighten it to firmly connect the two sets of support bases 7 together. At this time, moving the hydraulic cylinder again can make the piston rod move in the inner cavity of the cleaning block 8. When it retracts, the cleaning block 8 can clean and block the impurities on the surface of the piston rod to prevent impurities from entering the inner cavity of the double piston hydraulic cylinder. During disassembly, simply loosen the bolts and remove them from the bolt holes 14 to remove the fixation of the two sets of support seats 7. After separating the two sets of support seats 7, pull out the positioning pin 34 from the positioning hole 33 to release the position of the connecting seat 2. This allows the connecting seat 2 to be disassembled from the connecting groove 32, completing the disassembly of the cleaning mechanism. The cleaning mechanism can then be maintained or replaced. This method achieves the cleaning of the piston rod of the double-piston hydraulic cylinder, preventing impurities from entering the hydraulic cylinder along the piston rod, reducing the impact on the normal operation of the equipment, and extending the service life of the hydraulic cylinder.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual piston hydraulic cylinder characterized by, include: The hydraulic cylinder body (1) and the cleaning mechanism for cleaning the hydraulic cylinder piston rod are provided in two sets; The cleaning mechanism includes connecting seats (2) symmetrically distributed on the surface of the hydraulic cylinder body (1), and the inner sidewall of the connecting seat (2) is provided with a connecting component (3) for connecting with the hydraulic cylinder. One end of the connecting seat (2) is integrally formed with a fixed seat (4). The surface of the fixed seat (4) is provided with an adjustment groove (5). The inner cavity of the adjustment groove (5) is provided with an adjustment seat (6) that is compatible with the adjustment groove (5). The surface of the adjustment seat (6) is connected with a support seat (7), and the support seat (7) is L-shaped. The surface of the support seat (7) is provided with an arc groove. The inner cavity of the arc groove is provided with a cleaning block (8) for cleaning dust and impurities on the surface of the piston rod. The inner side wall of the support seat (7) is provided with a combination structure that facilitates assembly.

2. A dual piston hydraulic cylinder according to claim 1, characterized in that: The connecting assembly (3) includes a mounting base (31) installed on the surface of the hydraulic cylinder body (1). The surface of the mounting base (31) is provided with a connecting groove (32) that is compatible with the connecting seat (2), and the connecting seat (2) is arranged in an I-shape. The top of the mounting base (31) is provided with a positioning structure for positioning the connecting base (2).

3. A dual piston hydraulic cylinder according to claim 2, characterized in that: The positioning structure includes a positioning hole (33) opened at the top of the mounting base (31), and the positioning hole (33) communicates with the inner cavity of the connecting groove (32), and a positioning pin (34) is inserted and slidably connected to the inner cavity of the positioning hole (33). The surface of the connecting seat (2) is provided with a fixing hole (35) that is compatible with the positioning pin (34).

4. A dual piston hydraulic cylinder according to claim 3, characterized in that: The fixing holes (35) are provided in several groups, and the several groups of fixing holes (35) are evenly distributed on the surface of the connecting seat (2); The surface of the connector (2) is also provided with scale lines corresponding to the position of the fixing hole (35).

5. A dual piston hydraulic cylinder as claimed in claim 3, wherein: The positioning pin (34) is a metal pin, and a magnet is magnetically connected to the surface of the positioning pin (34). The magnet is connected to the inner cavity of the fixing hole (35).

6. A dual piston hydraulic cylinder as claimed in claim 1, characterized in that: The surface of the adjustment seat (6) is integrally formed with a support sleeve (10), and the inner cavity of the support sleeve (10) is provided with a support rod (11) that is adapted to the support sleeve (10), and the support rod (11) is screwed into the inner cavity of the adjustment groove (5).

7. A dual piston hydraulic cylinder as claimed in claim 1, wherein: The combined structure includes a support column (12), which is integrally formed on the inner wall of one set of support seats (7), and the inner wall of the other set of support seats (7) is provided with a support hole (13) that is compatible with the support column (12).

8. A dual piston hydraulic cylinder according to claim 7, characterized in that: The surface of the support base (7) is provided with bolt holes (14), and the two sets of bolt holes (14) are fixed together by bolts.

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