A tool for fine filter assembly and filter core replacement
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI FAST AUTO DRIVE GRP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-21
AI Technical Summary
The existing fine filter assembly and filter element replacement process has problems such as high assembly difficulty, easy deformation and failure of the screw head at the tail of the filter cartridge, and limited operating space leading to the use of tools with offset, resulting in thread deformation and sealing failure.
A tooling system including a guide rail and a working support is designed, equipped with a fixing device and a power unit. The filter cartridge is stably fixed by the sliding design of the guide rail and the working support, and the power unit provides controllable torque. Combined with a ratchet and a steel ring sleeve, the filter cartridge is double-fixed, ensuring precise control of the torque direction and magnitude.
It significantly reduces assembly difficulty, avoids filter cartridge tilting or shaking, extends filter cartridge life, improves assembly efficiency and accuracy, reduces safety risks, and ensures the safety of equipment and operators.
Smart Images
Figure CN224527118U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of fine filter assembly, and relates to a tool for fine filter assembly and filter core replacement. BACKGROUND
[0002] The fine filter is an indispensable hydraulic component of the gearbox, is responsible for the impurity filtering work of the whole hydraulic oil circuit, and thus guarantees the safe and stable operation of the precise hydraulic parts such as proportional solenoid valves on the gearbox. Due to the assembly mode of head suspension fixation and the particularity of the structure of the fine filter, there are problems of great assembly difficulty and deformation failure of the screw head at the tail of the filter cartridge in the process of assembly and replacement of the fine filter core. The current assembly process of the fine filter is that the filter head of the fine filter is first fixed on the gearbox by screws, then the filter core is inserted and assembled into the filter head, next the filter cartridge is rotated into the filter head, and finally the torque wrench is used for tightening. Since the filter cartridge is long, if the direction of the torque wrench is not kept vertical during the tightening process, the screw head at the tail of the filter cartridge is easily damaged, and assembly and disassembly are difficult.
[0003] The prior art scheme has multiple structural defects: in the assembly process flow, the current step-by-step installation mode (fixing the filter head → inserting and assembling the filter core → rotating the filter cartridge → torque tightening) has rigid constraints on the operation sequence, and the fault tolerance of each process is extremely low. Especially in the final tightening stage, the operator needs to complete high-precision torque application in the narrow internal space of the gearbox, and the long and slender structure of the filter cartridge with a length of 150-200mm causes significant force arm effect, and any slight angular deviation will generate asymmetric stress at the screw head part. Secondly, there is a fundamental contradiction in tool adaptability: as a standard tool, the torque wrench requires that the force direction is strictly perpendicular to the rotation axis, but in the actual assembly scene, the structure of the gearbox shell often limits the operation angle, resulting in tool offset use in most assembly operations, directly causing deformation of the screw thread profile, eccentric wear of the sealing cone surface and other hidden damages, and the screw thread may be stuck or the seal may fail after multiple disassembly and assembly cycles. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the technical problem of great difficulty in assembly and filter core replacement of the fine filter in the prior art, and provides a tool for fine filter assembly and filter core replacement.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] In the first aspect, the utility model discloses a tool for fine filter assembly and filter core replacement, which comprises a guide rail, a working support is slidably arranged on the guide rail, a fixing device for fixing the filter cartridge of the fine filter during work is arranged on the working support, and a power device for providing torque for the filter cartridge of the fine filter through the fixing device is connected to the fixing device.
[0007] Further improvements are that:
[0008] The fixing device comprises a circular arc supporting plate fixedly arranged on the working support, the radius of the circular arc supporting plate is greater than that of the filter cartridge of the fine filter; a circular arc groove is arranged in the circular arc supporting plate, a handle is slidably arranged in the circular arc groove; a first ratchet wheel is connected to one side of the handle, a screw sleeve matched with a tail screw of the filter cartridge of the fine filter is connected to the first ratchet wheel; a second ratchet wheel is connected to the other side of the handle, a steel ring sleeve matched with the outer diameter of the filter cartridge of the fine filter is connected to the second ratchet wheel, the steel ring sleeve is fastened through a connecting piece; the circular arc supporting plate, the screw sleeve and the steel ring sleeve are coaxial.
[0009] The first ratchet wheel and the second ratchet wheel are both provided with adjusting components for switching left-handed or right-handed working states.
[0010] An antiskid rubber ring is arranged in the inner ring of the steel ring sleeve.
[0011] The circular arc supporting plate comprises two symmetrical circular arc supporting plates, and the handle is arranged between the two circular arc supporting plates.
[0012] The screw sleeve and the steel ring sleeve are coaxial and the distance between them is greater than half the length of the filter cartridge of the fine filter.
[0013] The shape of the circular arc supporting plate is a circular arc less than or equal to 1 / 4 of a circle.
[0014] The power device comprises a manual device, a motor driving device, a pneumatic driving device and a hydraulic pneumatic device.
[0015] The guide rail is arranged on the liftable base.
[0016] An oil collecting box is arranged below the guide rail.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] This utility model discloses a tooling for assembling and replacing filter cartridges in fine filters. Through the sliding design of the guide rail and working support, combined with a fixing device, the filter cartridge can be stably fixed, preventing tilting or shaking caused by improper human operation during assembly, significantly reducing assembly difficulty. The fixing device provides torque to the filter cartridge via a power unit. The power unit can precisely control the magnitude and direction of the torque, ensuring uniform force on the filter cartridge during tightening or loosening, preventing deformation or failure of the tail screw, and extending the service life of the filter cartridge. The introduction of the power unit automates the tightening and loosening of the filter cartridge, reducing manual intervention and improving assembly efficiency. Simultaneously, the power unit can precisely control the torque, ensuring consistent torque for each assembly, improving assembly accuracy. The fixing device stably fixes the filter cartridge, and the power unit provides controllable torque, reducing safety risks caused by human error during operation and ensuring the safety of equipment and operators.
[0019] Furthermore, the first and second ratchet wheels in the fixing device eliminate the need for frequent wrench adjustments when tightening or loosening the filter cartridge. Continuous rotation is achieved with only unidirectional force, greatly simplifying the operation and significantly shortening assembly time. The steel ring sleeve secures the middle part of the filter cartridge via connectors (such as screws), and works in conjunction with a threaded sleeve that mates with the screw head at the tail of the filter cartridge, achieving double fixation. This design ensures even force distribution during tightening or loosening, avoiding the deformation or damage to the tail screw head caused by torque direction deviation or excessive localized force in traditional manual operation. This ensures the integrity and reusability of the filter cartridge, extends its lifespan, and reduces maintenance costs. The coaxial design of the arc-shaped support plate, threaded sleeve, and steel ring sleeve ensures that the filter cartridge remains axially aligned throughout the assembly process, avoiding assembly errors caused by eccentricity or tilting, further improving assembly accuracy and stability.
[0020] Furthermore, an anti-slip rubber ring is provided on the inner ring of the steel ring sleeve to further fix the middle part of the filter cartridge by increasing friction, preventing the filter cartridge from sliding or shaking during tightening or loosening, thus ensuring the reliability and safety of operation. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of a tooling structure for assembling a fine filter and replacing the filter element in an embodiment of the present invention.
[0023] Figure 2This is a schematic diagram of the installation structure of a tooling for assembling and replacing a fine filter in a transmission during operation, as described in an embodiment of the present invention.
[0024] Figure 3 This is a schematic diagram of a tooling used for assembling a fine filter and replacing the filter element in an embodiment of the present invention.
[0025] The components are: 1-base; 2-guide rail; 3-oil collection box; 4-working bracket; 5-arc support plate; 6-internal hexagonal screw sleeve; 7-first ratchet; 8-steel ring sleeve; 9-second ratchet; 10-anti-slip rubber ring; 11-handle; 12-fine filter; 13-filter cartridge; 14-filter element; 15-gearbox; 16-screw. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0031] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] The present invention will now be described in further detail with reference to the accompanying drawings:
[0033] See Figure 1 and Figure 2 This utility model discloses a tooling for assembling and replacing a fine filter element, including a guide rail 2 mounted on a liftable base 1, with an oil collection box 3 located below the guide rail 2. A working bracket 4 is slidably mounted on the guide rail 2, and a fixing device for fixing the filter cartridge 13 of the fine filter during operation is mounted on the working bracket 4. The fixing device is connected to a power device that provides torque to the filter cartridge 13 of the fine filter through the fixing device. The power device includes a manual, motor-driven, pneumatic, and hydraulic-pneumatic device. The fixing device includes an arc-shaped support plate 5 fixedly mounted on the working bracket 4, the radius of which is larger than the radius of the filter cartridge 13 of the fine filter. The arc-shaped support plate 5 includes two symmetrically arranged arc-shaped support plates, and a handle 11 is located between the two arc-shaped support plates. The shape of the arc-shaped support plate 5 is an arc less than or equal to 1 / 4 of a circle. An arc-shaped groove is provided in the arc-shaped support plate 5, and the handle 11 is slidably mounted in the arc-shaped groove.
[0034] See Figure 3The handle 11 has a first ratchet 7 connected to one side, which is connected to a threaded sleeve 6 that mates with the screw head at the tail of the filter cartridge 13 of the fine filter. The other side of the handle 11 has a second ratchet 9 connected to the second ratchet 9, which is connected to a steel ring sleeve 8 that mates with the outer diameter of the filter cartridge 13 of the fine filter. The inner ring of the steel ring sleeve 8 has an anti-slip rubber ring 10. The distance between the threaded sleeve 6 and the steel ring sleeve 8 is greater than half the length of the filter cartridge 13 of the fine filter. The steel ring sleeve 8 is fastened by a connecting piece, which is a screw 16. The arc-shaped support plate 5, the threaded sleeve 6, and the steel ring sleeve 8 are coaxial. Both the first ratchet 7 and the second ratchet 9 are equipped with adjustment components to switch between left-hand and right-hand rotation. The first ratchet 7 and the second ratchet 9 in the fixing device eliminate the need for frequent wrench adjustments when tightening or loosening the filter cartridge 13; continuous rotation can be achieved with only unidirectional force, greatly simplifying the operation process and significantly shortening the assembly time. The steel ring sleeve 8 is fastened to the middle part of the filter cartridge 13 by screws 16, and works in conjunction with the threaded sleeve 6 that mates with the screw head at the tail of the filter cartridge to achieve double fixation of the filter cartridge 13. This design ensures that the filter cartridge 13 is subjected to uniform force during tightening or loosening, avoiding the problems of deformation or damage to the tail screw head caused by torque direction deviation or excessive local force in traditional manual operation. This ensures the integrity and reusability of the filter cartridge 13, extends the filter cartridge life, and reduces maintenance costs. The coaxial design of the arc support plate 5, the threaded sleeve 6, and the steel ring sleeve 8 ensures that the filter cartridge 13 always maintains axial alignment during assembly, avoiding assembly errors caused by eccentricity or tilting, and further improving assembly accuracy and stability.
[0035] This utility model discloses a tooling for assembling and replacing filter cartridges in fine filters. Through the sliding design of the guide rail and working support, combined with a fixing device, the filter cartridge can be stably fixed, preventing tilting or shaking caused by improper human operation during assembly, significantly reducing assembly difficulty. The fixing device provides torque to the filter cartridge via a power unit. The power unit can precisely control the magnitude and direction of the torque, ensuring uniform force on the filter cartridge during tightening or loosening, preventing deformation or failure of the tail screw, and extending the service life of the filter cartridge. The introduction of the power unit automates the tightening and loosening of the filter cartridge, reducing manual intervention and improving assembly efficiency. Simultaneously, the power unit can precisely control the torque, ensuring consistent torque for each assembly, improving assembly accuracy. The fixing device stably fixes the filter cartridge, and the power unit provides controllable torque, reducing safety risks caused by human error during operation and ensuring the safety of equipment and operators.
[0036] The working principle of this utility model is as follows:
[0037] This utility model consists of a base 1, a guide rail 2, an oil collection box 3, a working bracket 4, an arc-shaped support plate 5, a hexagonal socket head cap screw 6, a first ratchet 7, a steel ring sleeve 8, a second ratchet 9, an anti-slip rubber ring 10, a handle 11, and screws 16. The base 1 is equipped with the guide rail 2 and the oil collection box 3. The working bracket 4 can move left and right on the guide rail 2. The oil collection box 3 collects the oil flowing out of the fine filter 12, preventing it from flowing onto the ground. The arc-shaped support plate 5 is mounted on the working bracket 4. The handle 11 is integrally formed and includes the hexagonal socket head cap screw 6 and the steel ring sleeve 8. The hexagonal socket head cap screw 6 and the first ratchet 7 are located at the right end of the handle 11, responsible for loosening or tightening the screw head at the tail of the filter cartridge 13. The steel ring sleeve 8, the second ratchet 9, and the anti-slip rubber ring 10 are located at the left end of the handle 11. The anti-slip rubber ring 10 is adhered to the inner ring of the steel ring sleeve 8, responsible for fixing the middle part of the filter cartridge 13.
[0038] First, move the working bracket 4 of the tooling to the rightmost end of the base 1, align the hex socket sleeve 6 with the screw head at the tail of the filter cartridge 13, and then move the working bracket 4 to the left until the screw head at the tail of the filter cartridge 13 is submerged in the hex socket sleeve 6. At this time, the steel ring sleeve 8 is fitted into the middle part of the filter cartridge 13, and the steel ring sleeve 8 is fixed and tightened with the screw 16. In this way, the steel ring sleeve 8 is completely fixed to the middle part of the filter cartridge 13. Adjust the first ratchet 7 and the second ratchet 9 to make them turn counterclockwise. Pull the handle 11 up and down by hand, and the filter cartridge 13 will be opened. After opening the filter cartridge 13, move the working bracket 4 along the guide rail 2 to the rightmost end of the base 1, pull out the filter element 14, and replace it with a new filter element 14. Adjust the first ratchet 7 and the second ratchet 9 to make them turn clockwise, move the working bracket 4 to the original position, pull the handle 11 up and down by hand, tighten the filter cartridge 13, loosen the screw 16, and the working bracket 4 moves to the right end of the base 1. The replacement of the filter element 14 is complete.
[0039] The working process of this utility model is as follows:
[0040] This utility model has two applications: assembly and filter replacement. These will be described below:
[0041] Assembly scenarios:
[0042] First, fix the filter head of the fine filter 12 onto the gearbox 15. Install the filter element 14 onto the filter head of the fine filter 12. Then, place the fixture in a suitable position. Pass the filter cylinder 13 through the steel ring sleeve until the tail screw head is submerged in the internal hexagonal socket sleeve 6. Tighten the screw 16. In this way, the steel ring sleeve 8 clamps the middle part of the filter cylinder 13. Adjust the first ratchet 7 and the second ratchet 9 to the right-hand position. Push the working bracket 4 to the left until the threaded part of the filter cylinder 13 contacts the filter head. Pull the handle 11 up and down by hand to tighten the filter cylinder 13. Loosen the screw 16 and move the working bracket 4 to the right end of the base 1 for the next use.
[0043] When to replace the filter:
[0044] First, move the working bracket 4 of the tooling to the rightmost end of the base 1, align the hex socket sleeve 6 with the screw head at the tail of the filter cartridge 13, then move the working bracket 4 to the left until the screw head at the tail of the filter cartridge 13 is submerged in the hex socket sleeve 6. Tighten the screw 16, and the steel ring sleeve 8 completely tightens the middle of the filter cartridge 13. Adjust the first ratchet 7 and the second ratchet 9 to the left-hand position, and pull the handle 11 up and down by hand to completely loosen the filter cartridge 13. Move the working bracket 4 to the right, remove the filter element 14, and replace it with a new filter element. Adjust the first ratchet 7 and the second ratchet 9 to the right-hand position, and push the working bracket 4 to the left until the threaded part of the filter cartridge 13 contacts the filter head. Pull the handle 11 up and down by hand to tighten the filter cartridge 13, loosen the screw 16, and move the working bracket 4 to the right end of the base 1. The filter element replacement is complete and ready for the next use.
[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A tooling for assembling a fine filter and replacing its filter element, characterized in that, Includes a guide rail (2), on which a working bracket (4) is slidably mounted, and on which a fixing device is mounted for fixing the filter cartridge (13) of the fine filter during operation, and the fixing device is connected to a power device that provides torque to the filter cartridge (13) of the fine filter through the fixing device.
2. The tooling for assembling a fine filter and replacing the filter element according to claim 1, characterized in that, The fixing device includes an arc support plate (5) fixedly mounted on the working support (4), the radius of the arc support plate (5) being larger than the radius of the filter cartridge (13) of the fine filter; an arc groove is provided in the arc support plate (5), and a handle (11) is slidably mounted in the arc groove; a first ratchet (7) is connected to one side of the handle (11), and the first ratchet (7) is connected to a threaded sleeve (6) that mates with the screw head at the tail of the filter cartridge (13) of the fine filter; a second ratchet (9) is connected to the other side of the handle (11), and the second ratchet (9) is connected to a steel ring sleeve (8) that mates with the outer diameter of the filter cartridge (13) of the fine filter, and the steel ring sleeve (8) is fastened by a connector; the arc support plate (5), the threaded sleeve (6) and the steel ring sleeve (8) are coaxial.
3. The tooling for assembling a fine filter and replacing the filter element according to claim 2, characterized in that, Both the first ratchet (7) and the second ratchet (9) are equipped with adjustment components to switch between left-hand and right-hand working states.
4. The tooling for assembling a fine filter and replacing the filter element according to claim 2, characterized in that, The inner ring of the steel ring sleeve (8) is provided with an anti-slip rubber ring (10).
5. The tooling for assembling a fine filter and replacing the filter element according to claim 2, characterized in that, The arc support plate (5) includes two symmetrically arranged arc support plates, and the handle (11) is arranged between the two arc support plates.
6. The tooling for assembling a fine filter and replacing the filter element according to claim 2, characterized in that, The threaded sleeve (6) is coaxial with the steel ring sleeve (8) and the distance between them is greater than half the length of the filter cartridge (13) of the fine filter.
7. The tooling for assembling a fine filter and replacing the filter element according to claim 2, characterized in that, The arc support plate (5) is an arc less than or equal to 1 / 4 of a circle.
8. The tooling for assembling a fine filter and replacing the filter element according to claim 1, characterized in that, The power unit includes manual, electric motor drive, pneumatic drive and hydraulic pneumatic drive.
9. The tooling for assembling a fine filter and replacing the filter element according to claim 1, characterized in that, The guide rail (2) is mounted on the liftable base (1).
10. The tooling for assembling a fine filter and replacing the filter element according to claim 1, characterized in that, An oil collection box (3) is provided below the guide rail (2).