A hydraulic cylinder with oil quality monitoring function

Abstract

This application provides a hydraulic cylinder with oil quality monitoring function, relating to the field of hydraulic cylinders. It includes a cylinder body, a telescopic assembly, and a sealing assembly. A dust detection assembly is installed on the cylinder body, comprising a pre-reserved box with a transparent tempered glass panel fixedly connected inside. A laser dust particle counter is fixedly installed on one side of the pre-reserved box. The pre-reserved box, connected to the cylinder body, allows oil from the cylinder body to flow smoothly into the pre-reserved box. The transparent tempered glass allows operators to observe and process the oil. The laser dust particle counter accurately detects the quantity and size of dust particles in the oil, while an audible and visual alarm promptly sounds when the number of dust particles exceeds a preset threshold, alerting operators to take immediate action. This effectively prevents excessive dust from causing wear and tear on internal components of the hydraulic cylinder, damaging sealing performance, and significantly reducing the probability of equipment failure.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinder technology, specifically a hydraulic cylinder with oil quality monitoring function. Background Technology

[0002] A hydraulic cylinder is an actuator in a hydraulic system that converts hydraulic energy into mechanical energy. It is mainly used to achieve linear reciprocating motion or small-angle oscillating motion. It has the characteristics of simple structure, large output force, smooth operation and fast response speed. It is widely used in many fields such as industrial machinery, engineering machinery, agricultural machinery, and aerospace. The operation of a hydraulic cylinder is based on Pascal's law, that is, the pressure on a closed liquid can be transmitted in all directions without changing its magnitude.

[0003] A novel push-pull hydraulic cylinder is disclosed on the patent website (publication number: CN213775903U). This invention, through the coordinated use of a cylinder barrel, buffer plunger, piston, rear end cover, cylinder barrel flange, mounting bracket, front end cover, piston rod, dust seal, O-ring, and bore ring, achieves the advantage of dustproof sealing. This solves the problem of poor sealing in existing hydraulic cylinders, which easily leads to oil leakage during use. Furthermore, poor sealing can cause internal dust ingress, resulting in dust particles inside the hydraulic cylinder and, over time, severe internal wear.

[0004] Although the above-mentioned prior art can achieve the desired result through the existing structure, the following defects still exist: In the actual use of such devices, some dust will eventually enter the hydraulic cylinder after a long period of operation. Increasing the sealing performance is only to alleviate the problem and cannot solve the actual problem. After the dust enters the hydraulic cylinder, the dust particles may embed into the surface of the seals (such as O-rings and lip seals) or directly scratch the lip of the seals, thereby damaging their sealing performance.

[0005] According to the patent application (publication number: CN220646354U), a servo hydraulic cylinder is disclosed. This application ensures that during use, storage, or oil filling through the oil filling hole, the operator is less likely to accidentally touch the sealing plug on the oil filling hole, preventing the oil port from opening and allowing foreign objects to enter. This provides high safety and improves the service life of the servo hydraulic cylinder.

[0006] Although the above-mentioned prior art can achieve the desired result through its structure, it still has the following drawbacks: often, in the actual use of such devices, the sealing plug is only used to reduce the time it takes for oil to enter the hydraulic cylinder. After a long period of operation, dust will still enter the hydraulic cylinder and damage the components inside.

[0007] To address the aforementioned issues, a hydraulic cylinder with oil quality monitoring functionality is proposed. Utility Model Content

[0008] (a) Technical problems to be solved To address the shortcomings of existing technologies, this application provides a hydraulic cylinder with oil quality monitoring function, which solves the problems mentioned in the background art.

[0009] (II) Technical Solution To achieve the above objectives, this application provides the following technical solution: A hydraulic cylinder with oil quality monitoring function, comprising a cylinder body, a telescopic assembly, and a sealing assembly. A dust detection assembly is provided on the cylinder body. The dust detection assembly includes a pre-reserved box, the interior of which is fixedly connected to transparent tempered glass. A laser dust particle counter is fixedly installed on one side of the pre-reserved box, and an audible and visual alarm is fixedly installed on one side of the laser dust particle counter. An oil delivery assembly is provided on the cylinder body, comprising a one-way valve. A flange is fixedly connected to one side of the one-way valve, and a first sealing ring is fixedly connected to one side of the flange.

[0010] By adopting the above technical solution, two check valves are provided. Both check valves are connected to the cylinder body. One is used to transport oil into the cylinder body, and the other is used to transport oil out of the cylinder body.

[0011] Preferably, the reserved box is fixedly connected to one side of the cylinder body, and the one-way valve is fixedly connected to both sides of the cylinder body.

[0012] By adopting the above technical solution, the reserved box is connected to the cylinder body, and the oil entering the cylinder body will also flow into the reserved box.

[0013] Preferably, a positioning ring is fixedly connected inside the cylinder body, and an anti-slip groove is formed on the outer surface of the cylinder body.

[0014] By adopting the above technical solution and setting the positioning ring, a portion of the space inside the cylinder body can be freed up, making it easier for oil to enter the cylinder body.

[0015] Preferably, the telescopic assembly includes a piston, a second sealing ring is fixedly connected to the side surface of the piston, and a piston rod is fixedly connected to the upper side of the piston.

[0016] By adopting the above technical solution, the piston is confined inside the cylinder body, and the oil will not overflow from the piston due to the setting of the second sealing ring.

[0017] Preferably, the piston is disposed inside the cylinder body, and the piston is slidably connected to the cylinder body through a second sealing ring.

[0018] By adopting the above technical solution, after the oil enters the cylinder body, it will push the piston and slide within the cylinder body.

[0019] Preferably, the sealing assembly includes a connecting ring, which is fixedly connected to the outside of the cylinder body. A bolt is provided inside the connecting ring, and a rear end cap is provided outside the bolt. A plug is fixedly connected to the upper side of the rear end cap, and a third sealing ring is fixedly connected to the side surface of the plug. Both the plug and the third sealing ring are located inside the cylinder body.

[0020] By adopting the above technical solution, the rear end cover and the connecting ring are fixed together by bolts, so that the rear end cover abuts against the lower side of the cylinder body, thereby locking the plug and the third sealing ring inside the cylinder body.

[0021] Preferably, the cylinder body has an inlay groove inside, a rubber retaining ring is fixedly connected inside the inlay groove, a rubber retaining block is fixedly connected to the upper side of the rear end cover, the rubber retaining block has a retaining groove inside, and the rubber retaining ring is engaged inside the retaining groove.

[0022] By adopting the above technical solution, when the rear end cover is against the lower side of the cylinder body, the rubber retaining ring is engaged with the retaining groove, thereby sealing the bottom of the cylinder body better.

[0023] (III) Beneficial Effects This application provides a hydraulic cylinder with oil quality monitoring function. It has the following beneficial effects: 1. This hydraulic cylinder with oil quality monitoring function has a pre-installed tank that connects to the cylinder body, allowing the oil in the cylinder body to flow smoothly into the pre-installed tank. Through the transparent tempered glass, the operator can observe and process the oil. The laser dust particle counter can accurately detect the number and size of dust particles in the oil, while the audible and visual alarm will promptly sound an alarm when the number of dust particles exceeds a preset threshold, reminding the operator to deal with the problem quickly. This effectively avoids excessive dust causing wear and tear on the internal components of the hydraulic cylinder and damage to the sealing performance, greatly reducing the probability of equipment failure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the entire application from the front view; Figure 2 This is a side view of the overall three-dimensional structure of this application; Figure 3 This is a three-dimensional structural schematic diagram of the first side view section of this application; Figure 4 This is a three-dimensional structural schematic diagram of the second side view section of this application.

[0026] In the diagram: 1. Cylinder body; 101. Reserved box; 102. Transparent tempered glass; 103. Laser dust particle counter; 104. Audible and visual alarm; 201. One-way valve; 202. Flange; 203. First sealing ring; 3. Positioning ring; 4. Anti-slip groove; 501. Piston; 502. Second sealing ring; 503. Piston rod; 601. Connecting ring; 602. Bolt; 603. Rear end cover; 604. Block; 605. Third sealing ring; 701. Embedding groove; 702. Rubber retaining ring; 703. Rubber retaining block; 704. Recess. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Reference Figures 1 to 4This application provides a hydraulic cylinder with oil quality monitoring function, including a cylinder body 1, a telescopic assembly, and a sealing assembly. A dust detection assembly is provided on the cylinder body 1. The dust detection assembly includes a pre-reserved box 101. A transparent tempered glass 102 is fixedly connected inside the pre-reserved box 101. A laser dust particle counter 103 is fixedly installed on one side of the pre-reserved box 101. An audible and visual alarm 104 is fixedly installed on one side of the laser dust particle counter 103. An oil delivery assembly is provided on the cylinder body 1. The oil delivery assembly includes a one-way valve 201. A flange 202 is fixedly connected to one side of the one-way valve 201. A first sealing ring 203 is fixedly connected to one side of the flange 202. The pre-reserved box 101 is fixedly connected to one side of the cylinder body 1. The one-way valve 201 is fixedly connected to both sides of the cylinder body 1. Transparent tempered glass 102 was chosen because of its high strength and transparency. It can withstand the pressure from the oil inside the cylinder body 1 while allowing operators to observe the oil's condition. The laser particle counter 103 accurately detects the number and size of dust particles in the oil, offering greater efficiency and accuracy compared to traditional manual methods. It can monitor the oil's contamination level in real time. When the laser particle counter 103 detects that the number of dust particles exceeds a preset threshold, the audible and visual alarm 104 will promptly emit sound and light signals to alert operators and prevent damage to the internal components of the hydraulic cylinder due to excessive dust, greatly improving the safety of equipment operation. The one-way valve 201 effectively prevents oil backflow, ensuring unidirectional flow of oil within the cylinder body 1, guaranteeing the normal operation of the hydraulic cylinder, and avoiding pressure instability caused by oil backflow. (Flange) Flange 202 adopts a standard size design, which facilitates connection with oil pipelines. The connection is firm and has good sealing performance, while being easy to disassemble for later maintenance and replacement. The first sealing ring 203 is made of oil-resistant rubber, which has good elasticity and sealing performance, effectively preventing oil leakage from the connection between flange 202 and pipeline, ensuring the efficiency and safety of oil transmission. The reserved box 101 is fixedly connected to one side of cylinder body 1. This connection method allows the reserved box 101 to communicate with the inside of cylinder body 1, so that the oil entering cylinder body 1 can flow smoothly into the reserved box 101. This ensures that the dust detection component can monitor the oil in cylinder body 1 in real time. Two one-way valves 201 are responsible for the input and output of oil respectively. This layout makes the oil flow smoother and avoids the mutual interference problems that may be caused by setting the inlet and outlet ports on the same side, thus improving the working efficiency of the hydraulic cylinder.

[0029] Reference Figure 1 and Figure 4In one aspect of this embodiment, the positioning ring 3 is made of metal and is fixedly connected to the cylinder body 1 by welding, ensuring a firm and reliable connection. The positioning ring 3 allows for a reasonable allocation of space within the cylinder body 1, providing some space for oil to enter. Simultaneously, the positioning ring 3 also limits the movement of the piston 501, preventing excessive movement and damage to the cylinder body 1. The anti-slip groove 4, with its uniformly distributed stripes, increases the friction on the outer surface of the cylinder body 1. This allows workers to better grip the cylinder body 1 during installation, handling, and maintenance of the hydraulic cylinder, preventing slippage and improving operational safety.

[0030] Reference Figure 1 and Figure 4 In one aspect of this embodiment, the piston 501 is made of high-strength alloy material, which has high compressive strength and wear resistance, can withstand the high pressure of oil, and extend its service life. A second sealing ring 502 is fixedly connected to the side surface of the piston 501. The second sealing ring 502 is a lip seal structure made of polyurethane, which has good sealing performance and wear resistance. It can tightly fit the inner wall of the cylinder body 1, effectively preventing oil from overflowing from the piston 501, ensuring the pressure difference on both sides of the piston 501, and ensuring that the piston 501 can move normally. The piston rod 503 is fixed to the piston 501 by welding, which is firm and easy to disassemble and maintain. The piston rod 503 is made of chrome-plated alloy steel with a smooth and wear-resistant surface, which can reduce frictional resistance during movement and improve its corrosion resistance. The piston 501 is slidably connected to the cylinder body 1 through the second sealing ring 502. This sliding connection allows the piston 501 to slide smoothly in the cylinder body 1 under the push of oil, converting hydraulic energy into mechanical energy and realizing linear reciprocating motion. The presence of the second sealing ring 502 not only ensures sealing performance but also reduces frictional wear between the piston 501 and the cylinder body 1.

[0031] Reference Figure 1 , Figure 3 and Figure 4In one aspect of this embodiment, the connecting ring 601 and the cylinder body 1 are integrally formed, with high overall strength, capable of withstanding the pressure from the rear end cover 603. The bolt 602 is made of high-strength stainless steel, possessing good corrosion resistance and strength. The bolt 602 secures the rear end cover 603 and the connecting ring 601 together, providing a simple and reliable connection that facilitates disassembly and installation, and allows for convenient maintenance of the internal components of the cylinder body 1. The rear end cover 603 is made of cast iron, possessing high strength and rigidity, effectively sealing the bottom of the cylinder body 1 to prevent oil leakage. The plug 604 is integrally formed with the rear end cover 603, its dimensions matching the interior of the cylinder body 1, allowing for tight embedding within the cylinder body 1. The third sealing ring 605 is made of nitrile rubber, possessing good oil resistance and sealing performance, further enhancing the sealing effect. The sealing performance between the block 604 and the cylinder body 1 prevents oil leakage from the bottom of the cylinder body 1. The block 604 and the third sealing ring 605 are both located inside the cylinder body 1, making the sealing structure more compact and the sealing effect better. The size of the insert groove 701 matches the rubber retainer 702, which facilitates the installation and fixing of the rubber retainer 702. The rubber retainer 702 has a certain elasticity and toughness and can be tightly fixed in the insert groove 701. The rubber retainer 703 and the rear end cover 603 are fixedly connected by adhesive, and the connection is firm. The shape and size of the groove 704 are adapted to the rubber retainer 702. When the rear end cover 603 is against the lower side of the cylinder body 1, the rubber retainer 702 and the groove 704 are locked together to form a double sealing structure, which can better seal the bottom of the cylinder body 1 and further prevent oil leakage and dust entry.

[0032] All electrical devices in this plan are powered by an external power source.

[0033] Working Principle: During operation, the oil delivery component plays a crucial role in the oil transfer phase of this hydraulic cylinder with oil quality monitoring. An external oil delivery pipeline is connected to a one-way valve 201 via a flange 202. A first sealing ring 203 ensures a tight seal at the connection, preventing oil leakage. One one-way valve 201 is responsible for inputting oil into the cylinder body 1, while the other is used to discharge oil from within the cylinder body 1. The one-way conduction characteristic of the one-way valve 201 ensures that oil does not flow back, maintaining the stability of oil flow within the cylinder body 1. After the oil enters the cylinder body 1, it actuates the telescopic component. The positioning ring 3 inside the cylinder body 1 rationally allocates space, providing ample room for oil flow. The hydraulic fluid acts on the piston 501. Since the piston 501 is slidably connected to the cylinder body 1 via the second sealing ring 502, and the second sealing ring 502 tightly adheres to the inner wall of the cylinder body 1, hydraulic fluid leakage from both sides of the piston 501 is effectively prevented, ensuring a stable pressure difference between the two sides of the piston 501. This pushes the piston 501 to perform linear reciprocating motion within the cylinder body 1. The movement of the piston 501 drives the piston rod 503 to move synchronously, realizing the conversion of hydraulic energy into mechanical energy. The sealing assembly ensures the sealing performance of the cylinder body 1 throughout the process. The connecting ring 601 is integrally formed with the cylinder body 1. The rear end cover 603 is fixed to the connecting ring 601 by bolts 602, ensuring that the rear end cover 603 tightly adheres to the bottom of the cylinder body 1. The plug 604 on the rear end cover 603 is embedded inside the cylinder body 1, and the third sealing ring 605 on the side surface of the plug 604 further enhances the sealing effect. Meanwhile, the rubber retaining ring 702 in the groove 701 inside the cylinder body 1 engages with the groove 704 of the rubber retaining block 703 on the rear cover 603, forming a double seal to effectively prevent oil leakage and external dust from entering. Throughout the operation, the dust detection component monitors the oil quality in real time. The reserved box 101 is connected to the cylinder body 1. The transparent tempered glass 102 allows staff to easily observe and process the oil in the reserved box 101. The oil in the cylinder body 1 flows into the reserved box 101. The detection end of the laser dust particle counter 103 is located inside the reserved box 101 to detect the oil in the reserved box 101. When the number of dust particles detected in the oil exceeds a preset threshold, the audible and visual alarm 104 sounds an alarm to remind staff to handle the situation promptly and avoid damage to the internal components of the hydraulic cylinder caused by dust.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with oil quality monitoring function, comprising a cylinder body (1), a telescopic assembly, and a sealing assembly, characterized in that: A dust detection assembly is provided on the cylinder body (1). The dust detection assembly includes a reserved box (101). A transparent tempered glass (102) is fixedly connected inside the reserved box (101). A laser dust particle counter (103) is fixedly installed on one side of the reserved box (101). An audible and visual alarm (104) is fixedly installed on one side of the laser dust particle counter (103). An oil supply assembly is provided on the cylinder body (1). The oil supply assembly includes a one-way valve (201). A flange (202) is fixedly connected to one side of the one-way valve (201). A first sealing ring (203) is fixedly connected to one side of the flange (202).

2. The hydraulic cylinder with oil quality monitoring function according to claim 1, characterized in that: The reserved box (101) is fixedly connected to one side of the cylinder body (1), and the one-way valve (201) is fixedly connected to both sides of the cylinder body (1).

3. The hydraulic cylinder with oil quality monitoring function according to claim 1, characterized in that: The cylinder body (1) is fixedly connected to a positioning ring (3), and the outer surface of the cylinder body (1) is provided with an anti-slip groove (4).

4. The hydraulic cylinder with oil quality monitoring function according to claim 1, characterized in that: The telescopic assembly includes a piston (501), a second sealing ring (502) is fixedly connected to the side surface of the piston (501), and a piston rod (503) is fixedly connected to the upper side of the piston (501).

5. The hydraulic cylinder with oil quality monitoring function according to claim 4, characterized in that: The piston (501) is disposed inside the cylinder body (1), and the piston (501) is slidably connected to the cylinder body (1) through the second sealing ring (502).

6. The hydraulic cylinder with oil quality monitoring function according to claim 1, characterized in that: The sealing assembly includes a connecting ring (601), which is fixedly connected to the outside of the cylinder body (1). A bolt (602) is provided inside the connecting ring (601), and a rear end cap (603) is provided outside the bolt (602). A plug (604) is fixedly connected to the upper side of the rear end cap (603), and a third sealing ring (605) is fixedly connected to the side surface of the plug (604). Both the plug (604) and the third sealing ring (605) are located inside the cylinder body (1).

7. A hydraulic cylinder with oil quality monitoring function according to claim 6, characterized in that: The cylinder body (1) has an inlay groove (701) inside, and a rubber retaining ring (702) is fixedly connected inside the inlay groove (701). A rubber retaining block (703) is fixedly connected to the upper side of the rear end cover (603). A retaining groove (704) is opened inside the rubber retaining block (703), and the rubber retaining ring (702) is engaged inside the retaining groove (704).

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