Gear shifting oil cylinder

Abstract

The utility model relates to the technical field of gear shifting oil cylinders, and discloses a gear shifting oil cylinder which comprises an oil cylinder body, piston rods are installed on the two sides of the outer portion of the oil cylinder body, oil inlets are fixedly connected to the right side of the outer portion of the oil cylinder body, and filtering assemblies are arranged on the upper portions of the two oil inlets. The filter assembly comprises a filter shell, a filter plate is inserted into the filter shell, a connector is fixedly connected to the upper portion of the filter shell, a mounting head is fixedly connected to the lower portion of the filter shell, external threads are arranged outside the mounting head, replacement assemblies are arranged on the two sides of the outer portion of the filter plate, and each replacement assembly comprises a triangular block. According to the gear-shifting oil cylinder, the filtering structure can be conveniently installed outside the oil inlet of the gear-shifting oil cylinder, pollutants such as metal filings, dust and fiber particles in hydraulic oil can be effectively removed through the filtering structure, the surface of a piston and the inner wall of the oil cylinder are prevented from being scratched by impurities, and the service life of the gear-shifting oil cylinder is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of shift cylinder technology, and in particular to a shift cylinder. Background Technology

[0002] A gear shift cylinder is a hydraulic actuator used in mechanical transmission systems to switch gears in mechanical equipment. It uses hydraulic oil to drive the piston to move, thereby controlling the displacement of the transmission mechanism (such as shift fork or gear set) and completing the gear shifting operation of the mechanical equipment.

[0003] A shift cylinder typically consists of an upper cylinder, a lower cylinder, a piston rod, and an oil inlet. During operation, hydraulic oil enters the upper chamber of the cylinder through the oil inlet, pushing the piston downwards and extending the piston rod. Simultaneously, hydraulic oil in the lower chamber is discharged from the lower oil port. Hydraulic oil then enters the lower chamber through the oil inlet, pushing the piston upwards and retracting the piston rod. At the same time, hydraulic oil in the upper chamber is discharged from the upper oil port, thus completing the shift cylinder's operation.

[0004] However, the existing shift cylinders lack a filter structure at the oil inlet, and impurities (such as metal shavings, dust, and fiber particles) may be mixed into the hydraulic oil. These impurities will enter the shift cylinder along with the hydraulic oil, and under high pressure, they will scratch the piston surface and the inner wall of the cylinder, thereby reducing the service life of the shift cylinder. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a shift cylinder, which aims to improve the problem that the oil inlet of the shift cylinder in the prior art lacks a filter structure, and the hydraulic oil may be mixed with impurities (such as metal shavings, dust, fiber particles, etc.). These impurities will enter the shift cylinder with the hydraulic oil, and under high pressure, the impurities will scratch the piston surface and the inner wall of the cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A shift cylinder includes a cylinder body, piston rods are installed on both sides of the cylinder body, and oil inlets are fixedly connected to the right side of the cylinder body. A filter assembly is provided on the upper part of the two oil inlets.

[0008] The filter assembly includes a filter housing, a filter plate inserted inside the filter housing, a connector fixedly connected to the upper part of the filter housing, an installation head fixedly connected to the lower part of the filter housing, an external thread on the outside of the installation head, and replacement components on both sides of the filter plate.

[0009] Furthermore, the replacement component includes triangular blocks, which are fixedly connected to the outer sides of the filter plate. Bolts are provided inside both triangular blocks, and grooves are provided on the outer side of the filter plate.

[0010] Furthermore, the oil inlet has an internal thread, and the external thread and the internal thread are threadedly connected.

[0011] Furthermore, a sealing ring is fitted around the outside of the mounting head, and the sealing ring is made of rubber.

[0012] Furthermore, the filter housing has an insertion hole inside, and the filter plate is slidably connected inside the insertion hole.

[0013] Furthermore, the triangular block has an installation hole inside, and the bolt is slidably connected inside the installation hole.

[0014] Furthermore, a positioning hole is provided inside the filter housing, and the bottom of the bolt is threadedly connected to the positioning hole.

[0015] Furthermore, the piston rod is made of stainless steel.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, when installing the filter housing, first put the sealing ring on the outside of the mounting head, then screw the mounting head into the oil port, and then connect the hydraulic oil pipeline to the connector. After the hydraulic oil is filtered through the filter plate in the filter housing, it enters the oil cylinder body through the oil inlet to remove impurities (such as metal shavings, dust, etc.) in the hydraulic oil, prevent scratching the piston surface and the inner wall of the oil cylinder, thereby extending the service life of the shift cylinder.

[0018] 2. In this utility model, when replacing or cleaning the filter plate, first loosen and remove the two bolts, put your hand into the groove on the outside of the filter plate, and take the filter plate out for cleaning. When installing, insert the filter plate and the triangular block into the filter shell, and then screw the bolts into the triangular block and the positioning hole. This ensures that the filter plate is easy to disassemble and clean, prevents the accumulation of impurities, maintains the filtration efficiency, and protects the filter shell and oil cylinder components. Attached Figure Description

[0019] Figure 1 This is a perspective view of a shift cylinder proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the filter shell of a shift cylinder proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the filter housing of a shift cylinder proposed in this utility model.

[0022] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle.

[0023] Legend:

[0024] 1. Cylinder body; 2. Piston rod; 3. Oil inlet; 4. Filter housing; 5. Mounting head; 6. Connecting head; 7. Sealing ring; 8. Filter plate; 9. Triangular block; 10. Mounting hole; 11. Positioning hole; 12. Insertion hole; 13. Groove; 14. Bolt; 15. Internal thread. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a gear-shifting cylinder, comprising a cylinder body 1, with piston rods 2 mounted on both sides of the cylinder body 1. The two piston rods 2 are respectively connected to different mechanical transmission mechanisms (such as shift forks or gear sets), and can realize bidirectional gear-shifting operation through hydraulic drive. An oil inlet 3 is fixedly connected to the right side of the cylinder body 1, which facilitates the entry and exit of hydraulic oil. A filter assembly is provided on the upper part of the two oil inlets 3, which facilitates the filtration of hydraulic oil. The piston rods 2 are made of stainless steel, which has excellent strength and hardness and can maintain its shape and performance under high pressure and high frequency working conditions.

[0027] The filter assembly includes a filter housing 4, with a filter plate 8 inserted inside. A connector 6 is fixedly connected to the upper part of the filter housing 4, facilitating connection to the hydraulic oil delivery pipeline. An installation head 5 is fixedly connected to the lower part of the filter housing 4, facilitating connection to the oil inlet 3. The installation head 5 has external threads. Replacement components are provided on both sides of the filter plate 8, facilitating replacement or cleaning of the filter plate 8. The oil inlet 3 has internal threads 15, and the external threads and internal threads 15 are threaded together, improving the stability of the filter housing 4 installation. A sealing ring 7 is fitted on the outside of the installation head 5, tightly fitting the oil cylinder or connecting parts. It provides a sealing effect through elastic deformation, preventing hydraulic oil from leaking or flowing out from the connection. The sealing ring 7 is made of rubber, which is elastic and can buffer gap changes caused by mechanical vibration or hydraulic shock.

[0028] Specifically, the installation steps for the filter housing 4 are as follows: First, the sealing ring 7 is fitted onto the outside of the mounting head 5. The sealing ring 7 is made of rubber material, which provides a good sealing effect, ensuring that there is no hydraulic oil leakage at the connection between the mounting head 5 and the oil inlet 3. Then, the mounting head 5 is screwed into the inside of the oil inlet 3. The tight fit of the threaded connection further enhances the sealing and fixation. At this time, the filter housing 4 is firmly connected to the oil inlet 3 through the mounting head 5, forming a complete filter structure. Next, the pipeline for conveying hydraulic oil is connected to the connector 6. The hydraulic oil enters the filter housing 4 through the pipeline. During the hydraulic oil delivery process, it passes through the filter plate 8 installed inside the filter housing 4. It can effectively intercept metal shavings, dust, fiber particles and other tiny impurities in hydraulic oil, ensuring the cleanliness of hydraulic oil. After being filtered, the hydraulic oil flows out from the filter housing 4 and enters the interior of the cylinder body 1 through the oil inlet 3. This design realizes the function of installing a filter structure on the outside of the oil inlet 3 of the shift cylinder, avoiding the pollution problem caused by the direct entry of hydraulic oil into the cylinder in the traditional design. The filter structure effectively removes impurities in the hydraulic oil, such as metal shavings, dust, fiber particles, etc. The filter structure not only prevents contaminants from entering the interior of the shift cylinder, but also prevents these impurities from scratching the piston surface and the inner wall of the cylinder under high pressure, thereby protecting the core components of the cylinder and maintaining the normal operation of the shift cylinder.

[0029] Reference Figure 4 The replacement components include triangular blocks 9, which are fixedly connected to the outer sides of the filter plate 8. Bolts 14 are provided inside both triangular blocks 9. Grooves 13 are provided on the outside of the filter plate 8 to facilitate the operation of the filter plate 8. Insertion holes 12 are provided inside the filter housing 4, and the filter plate 8 is slidably connected inside the insertion holes 12. Mounting holes 10 are provided inside the triangular blocks 9, and bolts 14 are slidably connected inside the mounting holes 10. Positioning holes 11 are provided inside the filter housing 4, and the bottom of the bolts 14 is threadedly connected to the positioning holes 11, which improves the stability of the filter plate 8 installation.

[0030] Specifically, when the filter plate 8 needs to be replaced or cleaned, the specific operating steps are as follows: First, loosen the two bolts 14 on the outside of the filter housing 4 used to fix the filter plate 8. Then, remove the two bolts 14 from the inside of the two positioning holes 11 and the two triangular blocks 9. This method of fixing the filter plate 8 through the positioning holes 11 and the triangular blocks 9 not only ensures the stability and sealing of the filter plate 8 during operation, but also facilitates accurate positioning during disassembly, preventing the filter plate 8 from loosening or being misaligned. Next, place your hand into the specially designed groove 13 on the outside of the filter plate 8 and gently apply force along the direction of the groove 13. Slide the filter plate 8 outwards gently. The groove 13 improves ease of operation, allowing the filter plate 8 to be easily removed from the filter housing 4 without the need for additional tools, thus significantly improving maintenance efficiency. Once the filter plate 8 is removed from the filter housing 4, it can be cleaned or replaced. During cleaning, impurities such as metal shavings, dust, and fiber particles that may be attached to the filter plate 8 can be thoroughly removed by simple rinsing or brushing, thereby restoring the optimal filtration performance of the filter plate 8. If the filter plate 8 is damaged or aged, it can be directly replaced with a new filter plate 8. After replacing filter plate 8, insert the clean or new filter plate 8 into the filter housing 4 along with the triangular block 9 in the correct direction, ensuring a tight fit between the filter plate 8 and the inside of the filter housing 4. The design of the triangular block 9 provides additional support and fixation for the filter plate 8, preventing it from shifting or loosening due to oil impact or vibration. Then, reinsert the two bolts 14 into the triangular block 9 and the positioning hole 11, and tighten them using a tool to ensure the filter plate 8 is secure and not loose after installation. This design, through the combination of the positioning hole 11 and the bolts 14, not only allows for quick installation... This also ensures the sealing of the filter plate 8, preventing hydraulic oil leakage during the filtration process. Through the above disassembly and installation process, the filter plate 8 inside the filter housing 4 can be easily disassembled and cleaned, greatly reducing maintenance difficulty and time costs. Regularly cleaning or replacing the filter plate 8 can effectively prevent impurities from accumulating on the surface of the filter plate 8 and avoid clogging problems. At the same time, this maintenance method can ensure that the filtration efficiency of the filter structure is always at its best, ensuring that the hydraulic oil entering the cylinder remains highly clean, thereby protecting the filter housing 4 and subsequent cylinder components from contaminants.

[0031] Working principle: When installing the filter housing 4, first, put the sealing ring 7 on the outside of the mounting head 5, then screw the mounting head 5 into the inside of the oil inlet 3. Then, connect the pipeline for conveying hydraulic oil to the connector 6. During the hydraulic oil conveying process, the hydraulic oil is filtered by the filter plate 8 installed inside the filter housing 4, and then enters the inside of the cylinder body 1 through the oil inlet 3. This makes it easy to install the filter structure on the outside of the oil inlet 3 of the shift cylinder. The filter structure can effectively remove contaminants such as metal shavings, dust, and fiber particles in the hydraulic oil, prevent these impurities from entering the inside of the shift cylinder, avoid impurities scratching the piston surface and the inner wall of the cylinder, and improve the service life of the shift cylinder.

[0032] When the filter plate 8 needs to be replaced or cleaned, first, loosen the two bolts 14, then remove the two bolts 14 from the inside of the two positioning holes 11 and the two triangular blocks 9. Then, place your hand inside the groove 13 on the outside of the filter plate 8 and move the filter plate 8 outward to remove it from the inside of the filter housing 4 for cleaning. When installing, insert the filter plate 8 and the triangular blocks 9 into the inside of the filter housing 4, and then screw the two bolts 14 into the inside of the two triangular blocks 9 and the positioning holes 11. This makes it easy to disassemble and clean the filter plate 8 installed inside the filter housing 4, prevent impurities from accumulating, maintain filtration efficiency, and protect the filter housing 4 and the cylinder components.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shift cylinder comprising a cylinder body (1), characterized in that: The oil cylinder body (1) is provided with a piston rod (2) on both sides, and the right side of the oil cylinder body (1) is fixedly connected with an oil inlet (3), and the upper part of the oil inlet (3) is provided with a filter assembly. The filter assembly comprises a filter shell (4), the filter shell (4) is inserted with a filter plate (8), the upper part of the filter shell (4) is fixedly connected with a connecting head (6), the lower part of the filter shell (4) is fixedly connected with a mounting head (5), the outer part of the mounting head (5) is provided with external threads, and the outer part of the filter plate (8) is provided with a replacement assembly.

2. A shift cylinder according to claim 1, characterized in that: The replacement assembly comprises a triangular block (9), the triangular block (9) is fixedly connected on both sides of the filter plate (8), the inner part of the triangular block (9) is provided with a bolt (14), and the outer part of the filter plate (8) is provided with a groove (13).

3. A shift cylinder according to claim 1, characterized in that: The inner part of the oil inlet (3) is provided with internal threads (15), and the external threads are in threaded connection with the internal threads (15).

4. A shift cylinder according to claim 1, characterized in that: The outer part of the mounting head (5) is provided with a sealing ring (7), and the material of the sealing ring (7) is rubber.

5. A shift cylinder according to claim 1, characterized in that: The inner part of the filter shell (4) is provided with a jack (12), and the filter plate (8) is slidably connected in the inner part of the jack (12).

6. A shift cylinder according to claim 2, characterized in that: The inner part of the triangular block (9) is provided with a mounting hole (10), and the bolt (14) is slidably connected in the inner part of the mounting hole (10).

7. A shift cylinder according to claim 2, characterized in that: The inner part of the filter shell (4) is provided with a positioning hole (11), and the bottom of the bolt (14) is in threaded connection with the positioning hole (11).

8. A shift cylinder according to claim 1, characterized in that: The material of the piston rod (2) is stainless steel.

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