Hydraulic cylinder with dustproof structure
By designing a dustproof structure on the hydraulic cylinder, including a dustproof connecting pipe, sealing ring, and cleaning brush, the problem of dust accumulation during the extension and retraction of the hydraulic cylinder is solved, achieving effective dust prevention and cleaning, and improving the sealing performance of the hydraulic cylinder and the reliability of the equipment.
Patent Information
- Application Number
- CN202520745711.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-20
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-04-20
AI Technical Summary
Dust can easily accumulate in hydraulic cylinders during extension and retraction, leading to contamination and reduced sealing performance, which affects equipment performance and safety.
A dustproof structure was designed, including a dustproof connecting pipe, a sealing ring, a mounting ring, and a cleaning brush. The sealing ring prevents dust from entering, the cleaning brush removes dust, and the dust is discharged through the dust discharge gap.
It effectively prevents dust from entering the hydraulic cylinder, keeps the hydraulic cylinder clean, improves sealing performance, extends equipment service life, and reduces maintenance costs.
Smart Images
Figure CN223825363U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic cylinder dustproof technical field, especially hydraulic cylinder with dustproof structure. BACKGROUND
[0002] Hydraulic cylinder is the hydraulic energy conversion mechanical energy, do linear reciprocating motion (or swing motion) hydraulic actuator. The working principle of hydraulic cylinder is through the high pressure liquid of hydraulic pump and provides the piston movement. When hydraulic enters one side of hydraulic cylinder, the piston will move to the other side, thereby realizing the linear motion of machinery. The output force of hydraulic cylinder and the effective area of piston and the pressure difference of both sides are directly proportional.
[0003] In actual application, the telescopic rod of the hydraulic cylinder often faces the problem of dust adhesion. In the process of extending and retracting, the surface of the telescopic rod is easy to accumulate dust and impurities. When these telescopic rods adhered by dust extend into the hydraulic cylinder again, the dust and impurities may be brought into the cylinder body, causing pollution to the hydraulic system.
[0004] Such pollution not only affects the cleanliness of hydraulic oil, but also may cause the wear of internal components of the hydraulic cylinder to be intensified. After a long time, the sealing performance of the hydraulic cylinder may be reduced, leakage problems may occur, and even the overall performance of the equipment may be reduced, causing failure. This not only increases the maintenance cost of the equipment, but also may affect the production efficiency and safety. UTILITY MODEL CONTENTS
[0005] The main purpose of the utility model is to provide a hydraulic cylinder with dustproof structure, which can effectively solve the problems in the background art.
[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:
[0007] A hydraulic cylinder with dustproof structure, comprising a hydraulic cylinder body, a telescopic rod, a connecting piece, the upper end of the hydraulic cylinder body is provided with a connecting pipe, the telescopic rod is inserted into the connecting pipe and connected with the hydraulic cylinder body, a first connecting piece is located at the lower end of the hydraulic cylinder body, and a second connecting piece is installed at the rod head of the telescopic rod.
[0008] The opening of the connecting pipe is connected with a dustproof butt joint pipe through a threaded part, a plurality of sealing rings are arranged at the pipe opening of the dustproof butt joint pipe, and the dustproof performance of the telescopic rod is enhanced through the sealing rings.
[0009] A plurality of mounting hole positions are formed in the end face of the dustproof butt joint pipe, the mounting hole positions are inserted into fasteners, and the fasteners are connected with an additional ring, a circular truncated cone hole is formed in the lower end of the additional ring, and a cleaning brush is arranged in the inner hole of the additional ring, the surface dust of the telescopic rod is brushed through the cleaning brush, and the dustproof and cleaning performance of the telescopic rod is improved.
[0010] Optionally, the connecting pipe is designed integrally with the hydraulic cylinder body, and a thread is arranged on the connecting pipe and matched with the thread part; the cross section of the dustproof butt joint pipe is designed in a mushroom shape, and the upper end of the dustproof butt joint pipe is designed in an inclined surface;
[0011] Optionally, a plurality of mounting hole positions are arranged annularly on the dustproof butt joint pipe, and a sealing ring is arranged between the dustproof butt joint pipe and the connecting pipe; the sealing ring is embedded in the inner hole of the dustproof butt joint pipe, and the sealing ring and the dustproof butt joint pipe are connected by an adhesive;
[0012] Optionally, a circular hole is arranged on the end face of the added ring and faces the mounting hole position; the fastener comprises a fastening bolt, a fastening nut and an anti-skid washer; the fastening bolt is inserted into the mounting hole position, the circular hole is sleeved with the fastening nut and the anti-skid washer, thereby connecting the added ring and the dustproof butt joint pipe; and a dust discharging gap is arranged between the added ring and the dustproof butt joint pipe.
[0013] Optionally, the cleaning brush is fixed on the rubber ring by heat melting, and the rubber ring is connected to the added ring by an adhesive; and the cleaning brush is annularly arranged in the inner hole of the added ring.
[0014] Optionally, the circular truncated cone hole is matched with the inclined surface of the upper end of the dustproof butt joint pipe, and the gap between the circular truncated cone hole and the inclined surface of the dustproof butt joint pipe is a dust discharging channel.
[0015] Compared with the prior art, the utility model has the advantages of:
[0016] The dustproof butt joint pipe is effectively enhanced in dustproof performance at the telescopic rod by the sealing ring at the pipe opening of the dustproof butt joint pipe; the sealing ring is tightly attached to the surface of the telescopic rod by the elastic effect, thereby effectively preventing the dust from entering and protecting the inside of the hydraulic cylinder from being polluted by the dust.
[0017] The added ring is further improved in dustproof effect; the added ring is firmly connected to the dustproof butt joint pipe by the fastener, and the cleaning brush arranged in the inner hole of the added ring can completely cover and brush the dust on the surface of the telescopic rod when the telescopic rod is extended or retracted; this design not only enhances the cleaning performance of the telescopic rod, but also helps to maintain the sealing effect between the dustproof butt joint pipe and the telescopic rod.
[0018] The dust cleaning system is formed by the cooperation of the cleaning brush, the added ring and the dustproof butt joint pipe; the cleaning brush continuously brushes the surface of the telescopic rod to brush off the accumulated dust during the extension and retraction of the telescopic rod; meanwhile, the dust discharging gap between the added ring and the dustproof butt joint pipe provides a discharging channel for the dust, thereby ensuring the continuous cleaning of the inside of the hydraulic cylinder. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a whole structure schematic view of the utility model;
[0020] Figure 2 It is the overall structure front view of the utility model;
[0021] Figure 3 It is dustproof butt joint pipe, add ring and fastener display drawing of the utility model;
[0022] Figure 4 It is add ring, cleaning brush display drawing of the utility model;
[0023] Figure 5 It is dustproof butt joint pipe display drawing of the utility model.
[0024] In the drawing: 1, hydraulic cylinder main body;2, telescopic rod;3, first connecting piece;4, second connecting piece;5, connecting pipe;6, dustproof butt joint pipe;7, threaded part;8, sealing ring;9, mounting hole;10, add ring;11, circular table type hole;12, cleaning brush;13, fastener. Specific implementation
[0025] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.
[0026] As Figure 1 - Figure 5 The utility model discloses a hydraulic cylinder with dustproof structure, which comprises a hydraulic cylinder main body 1, a telescopic rod 2 and connecting pieces. The upper end of the hydraulic cylinder main body 1 is provided with a connecting pipe 5, the telescopic rod 2 is inserted into the connecting pipe 5 and connected with the hydraulic cylinder main body 1. The lower end of the hydraulic cylinder main body 1 is provided with a first connecting piece 3, and a second connecting piece 4 is installed at the rod head of the telescopic rod 2.
[0027] In order to further improve the dustproof performance, the opening of the connecting pipe 5 is connected with a dustproof butt joint pipe 6 through a threaded part 7. The pipe opening of the dustproof butt joint pipe 6 is provided with a plurality of sealing rings 8, and the dustproof performance at the telescopic rod 2 can be effectively improved through the elastic effect of the sealing rings 8, so that the inside of the hydraulic cylinder is protected from dust invasion.
[0028] In addition, a plurality of mounting holes 9 are formed in the end face of the dustproof butt joint pipe 6, and the mounting holes 9 are used for inserting fasteners 13. The fasteners 13 are connected with an add ring 10 through the mounting holes 9, and the lower end of the add ring 10 is provided with a circular table type hole 11. The inner hole of the add ring 10 is provided with cleaning brushes 12, and the cleaning brushes 12 can brush the dust on the surface of the telescopic rod 2 when the telescopic rod 2 is telescoped, so that the dustproof and cleaning performance of the telescopic rod 2 is improved.
[0029] The connecting pipe 5 is designed integrally with the hydraulic cylinder body 1, and the connecting pipe 5 is provided with threads adapted to the threads 7. The cross section of the dustproof butt joint pipe 6 is designed in the shape of a mushroom, and the upper end is designed in the shape of an inclined plane. Such design can better guide the dust out and reduce the entry of dust.
[0030] A plurality of mounting hole positions 9 are annularly distributed on the dustproof butt joint pipe 6, and a sealing ring is sleeved between the dustproof butt joint pipe 6 and the connecting pipe 5. The sealing ring 8 is embedded in the inner hole of the dustproof butt joint pipe 6 and connected with the dustproof butt joint pipe 6 through an adhesive, so as to ensure the durability and reliability of the sealing effect.
[0031] A circular hole is opened in the end face of the added ring 10 and faces the mounting hole position 9. The fastener 13 includes a fastening bolt, a fastening nut and an anti-skid washer. The fastening bolt is inserted into the mounting hole position 9 and the circular hole, and then the fastening nut and the anti-skid washer are sleeved, so as to realize the firm connection between the added ring 10 and the dustproof butt joint pipe 6. The added ring 10 and the dustproof butt joint pipe 6 are provided with a dust discharge gap, which is convenient for the discharge of dust.
[0032] The cleaning brush 12 is fixed on the rubber ring by hot melting, and the rubber ring is connected to the added ring 10 by an adhesive. The cleaning brush 12 is annularly distributed in the inner hole of the added ring 10, so as to ensure that the brush can fully cover and clean the surface during the extension and contraction of the telescopic rod 2.
[0033] The circular truncated cone type hole 11 is adapted to the upper inclined plane of the dustproof butt joint pipe 6. The gap between the circular truncated cone type hole 11 and the inclined plane of the dustproof butt joint pipe 6 serves as a dust discharge channel, so that the dust can be discharged through the channel, thereby keeping the inside of the hydraulic cylinder clean.
[0034] Insert the telescopic rod 2 into the connecting pipe 5 of the hydraulic cylinder body 1. Ensure that the telescopic rod 2 is correctly connected with the hydraulic cylinder body 1. A first connecting piece 3 is arranged at the lower end of the hydraulic cylinder body 1. A second connecting piece 4 is installed at the rod head of the telescopic rod 2. The dustproof butt joint pipe 6 is connected to the opening of the connecting pipe 5 through the threads 7. A plurality of sealing rings 8 are embedded in the pipe opening of the dustproof butt joint pipe 6. The sealing ring 8 is ensured to enhance the dustproof performance at the telescopic rod 2 through its own elastic effect. The fastener 13 is inserted into the mounting hole position 9 opened in the end face of the dustproof butt joint pipe 6. The added ring 10 is connected through the fastener 13, so as to ensure its firm connection. The cleaning brush 12 is fixed in the inner hole of the added ring 10, so as to ensure that it is annularly distributed in the inner hole of the added ring 10. A sealing ring is sleeved between the dustproof butt joint pipe 6 and the connecting pipe 5. The added ring 10 and the dustproof butt joint pipe 6 are provided with a dust discharge gap. The cleaning brush 12 is fixed on the rubber ring by hot melting. The rubber ring is connected to the added ring 10 by an adhesive. The circular truncated cone type hole 11 is adapted to the upper inclined plane of the dustproof butt joint pipe 6. The gap between the circular truncated cone type hole 11 and the inclined plane of the dustproof butt joint pipe 6 serves as a dust discharge channel.
[0035] The hydraulic cylinder main body 1 is controlled by a hydraulic system to make the telescopic rod 2 extend and retract. During the extension and retraction of the telescopic rod 2, the cleaning brush 12 covers and cleans the surface of the telescopic rod 2. The sealing ring 8 prevents dust from entering the interior of the hydraulic cylinder by virtue of its elasticity. Dust is discharged through the dust discharge gap between the dustproof butt joint pipe 6 and the ring 10. The dustproof butt joint pipe 6 and the sealing ring 8 are regularly checked to ensure the dustproof effect. Dust in the dust discharge gap is cleaned to keep the interior of the hydraulic cylinder clean.
[0036] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein.
[0037] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. A hydraulic cylinder with dustproof structure, comprising a hydraulic cylinder body (1), a telescopic rod (2) and connecting pieces, the upper end of the hydraulic cylinder body (1) is provided with a connecting pipe (5), the telescopic rod (2) is inserted into the connecting pipe (5) and connected with the hydraulic cylinder body (1), a first connecting piece (3) is located at the lower end of the hydraulic cylinder body (1), and a second connecting piece (4) is installed at the rod head of the telescopic rod (2), characterized in that: The opening of the connecting pipe (5) is connected with a dustproof butt joint pipe (6) through a threaded part (7), and the pipe opening of the dustproof butt joint pipe (6) is provided with a plurality of sealing rings (8), which enhance the dustproof performance of the telescopic rod (2). The end face of the dustproof butt joint pipe (6) is provided with a plurality of mounting hole positions (9), the mounting hole positions (9) are inserted into fasteners (13), and the mounting hole positions (9) are connected with an additional ring (10) through the fasteners (13), the lower end of the additional ring (10) is provided with a circular truncated cone hole (11), and the inner hole of the additional ring (10) is provided with a cleaning brush (12), which brushes the dust on the surface of the telescopic rod (2) and improves the dustproof and cleaning performance of the telescopic rod (2) during extension and retraction.
2. The hydraulic cylinder with dustproof structure according to claim 1, characterized in that: The connecting pipe (5) is integrally designed with the hydraulic cylinder body (1), and the connecting pipe (5) is provided with threads matched with the threaded part (7), the cross section of the dustproof butt joint pipe (6) is designed in a mushroom shape, and the upper end of the dustproof butt joint pipe (6) is designed in an inclined surface.
3. The hydraulic cylinder with dustproof structure according to claim 2, characterized in that: A plurality of the mounting hole positions (9) are annularly distributed on the dustproof butt joint pipe (6), a sealing ring is sleeved between the dustproof butt joint pipe (6) and the connecting pipe (5), the sealing ring (8) is embedded in the inner hole of the dustproof butt joint pipe (6), and the sealing ring (8) and the dustproof butt joint pipe (6) are connected through an adhesive.
4. The hydraulic cylinder with dustproof structure according to claim 3, characterized in that: The end face of the additional ring (10) is provided with a circular hole opposite to the mounting hole position (9), the fastener (13) includes a fastening bolt, a fastening nut and an anti-skid washer, the fastening bolt is inserted into the mounting hole position (9) and the circular hole, the fastening nut and the anti-skid washer are sleeved, the connection between the additional ring (10) and the dustproof butt joint pipe (6) is realized, and a dust discharging gap is formed between the additional ring (10) and the dustproof butt joint pipe (6).
5. The hydraulic cylinder with dustproof structure according to claim 4, characterized in that: The cleaning brush (12) is fixed on a rubber ring by heat melting, the rubber ring is connected to the additional ring (10) through an adhesive, and the cleaning brush (12) is annularly distributed in the inner hole of the additional ring (10).
6. The hydraulic cylinder with dustproof structure according to claim 5, characterized in that: The circular truncated cone hole (11) is matched with the upper inclined surface of the dustproof butt joint pipe (6), and the gap between the circular truncated cone hole (11) and the inclined surface of the dustproof butt joint pipe (6) is a dust discharging channel.