A spray gun type active lubrication brake cylinder

Abstract

The utility model relates to brake cylinder technical field, the utility model provides a kind of spray gun type active lubrication brake cylinder including cylinder body structure, the cylinder body structure includes brake cylinder, piston rod, mounting seat and mounting plate, and mounting plate is equipped with four groups, the mounting seat is fixedly connected on the outer surface of brake cylinder one end. A kind of spray gun type active lubrication brake cylinder provided by the utility model, two groups of spray gun can be injected in the inside of lubricating sponge, at this time, lubricating sponge will be wetted by lubricating oil, then with the expansion and contraction of piston rod, the lubricating oil in the inside of lubricating sponge can be evenly applied to the outer surface of piston rod, the design can realize the effect of active lubrication to the outer surface of piston rod, can effectively reduce the friction between the outer surface of piston rod and outer sealing ring and two groups of inner sealing ring, solve the technical problem of not being convenient for active lubrication of piston rod in prior art.

Description

Technical Field

[0001] This utility model relates to the field of brake cylinder technology, and more specifically, to a spray gun type active lubrication brake cylinder. Background Technology

[0002] Railway freight car brake cylinders (similar to general-purpose cylinders) are typically mounted horizontally. This mounting configuration is prone to lubrication problems in high-temperature summer environments: the lubricating oil on the piston rubber seals thins due to high temperatures and, under the combined influence of gravity and vehicle vibration, naturally flows down to the lower part of the brake cylinder, resulting in severe lubrication loss in the upper part of the cylinder. This loss of lubricating oil creates dry friction between the seals and the cylinder wall, significantly increasing friction and making the seals prone to buckling. Ultimately, buckling of the seals directly leads to brake cylinder leakage, seriously impacting railway traffic safety.

[0003] Therefore, this utility model provides a spray gun type active lubrication brake cylinder to solve the above problems. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this utility model provide a spray gun type active lubrication brake cylinder, which solves the technical problem of the inconvenience of active lubrication of the piston rod in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a spray gun type active lubrication brake cylinder, comprising: a cylinder body structure, the cylinder body structure including a brake cylinder, a piston rod, a mounting seat and a mounting plate, and the mounting plate having four sets, the mounting seat being fixedly connected to the outer surface of one end of the brake cylinder;

[0006] A fixing structure, the fixing structure including a mounting sleeve, a lubrication sleeve, a lubrication sponge and an injection hole, wherein the inner surface of one end of the mounting sleeve is fitted onto the outer surface of the mounting base;

[0007] The lubrication structure includes a liquid storage tank, a connecting ring, a micro liquid pump and a spray gun. The connecting ring is provided in two sets, and the two sets of connecting rings are respectively fixedly connected to the outer surfaces of both sides of the lubrication sleeve.

[0008] For example, in at least one embodiment of the present invention, a spray gun-type active lubrication brake cylinder is provided, which further includes: the piston rod is disposed inside the brake cylinder, and four sets of mounting plates are fixedly connected to the outer surface of the mounting base.

[0009] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: four sets of mounting plates are engaged inside one end of the mounting sleeve, and a connecting plate is fixedly connected to the outer surface of the mounting sleeve. The connecting plate is provided with four sets, and the interior of each of the four sets of connecting plates is threaded with a fixing bolt. The positions of the four sets of connecting plates correspond to the positions of the four sets of mounting plates, and the lower ends of the four sets of fixing bolts are respectively threaded to the interior of the four sets of mounting plates.

[0010] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: the lubrication sleeve is fixedly connected to the inner surface of the other end of the mounting sleeve, and the inner surface of the lubrication sleeve is clearance-fitted with the outer surface of the piston rod, and the fit clearance is 0.1-0.2mm, to ensure smooth extension and retraction of the piston rod and to prevent lubricating oil leakage; an outer sealing ring is fixedly connected to the outer surface of one end of the lubrication sleeve, and the inner surface of the outer sealing ring is interference-fitted with the outer surface of the piston rod.

[0011] For example, in at least one embodiment of the present invention, a spray gun-type active lubrication brake cylinder is provided, which further includes: the lubricating sponge is disposed in the middle position inside the lubrication sleeve, and the inner surface of the lubricating sponge is attached to the outer surface of the piston rod.

[0012] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: an inner sealing ring fixedly connected to the inner surfaces of both sides of the lubrication sleeve, and the inner surfaces of the two sets of inner sealing rings are interference-fitted with the outer surfaces of the piston rod, and the surfaces of the two sets of inner sealing rings on opposite sides are attached to the outer surfaces of the two sides of the lubricating sponge, and the two sets of injection holes are respectively opened inside the outer surfaces of the lubrication sleeve, and the two sets of injection holes are connected to the interior of the lubrication sleeve.

[0013] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: the two ends of the lower surface of the reservoir are respectively fixedly connected to the upper ends of two sets of connecting rings, the upper surface of the reservoir is internally threaded with a sealing plug, and the upper end of the reservoir is provided with a reservoir cavity.

[0014] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: a micro pump installed inside the lower end of the liquid storage tank, and the upper end of the micro pump is connected to an inlet pipe, and the micro pump is connected to the liquid storage chamber through the inlet pipe.

[0015] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder is provided, which further includes: both ends of the micro pump are connected to connecting pipes, and the two sets of connecting pipes are respectively inserted into the interior of two sets of connecting rings, and the lower ends of the two sets of connecting pipes are respectively connected to the interior of the two sets of spray guns.

[0016] For example, in at least one embodiment of the present invention, a spray gun type active lubrication brake cylinder further includes: two sets of spray guns are respectively fixedly connected to the inside of the outer surface of two sets of connecting rings, and one end of each set of spray guns is inserted into the inside of two sets of injection holes.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, an external power source can provide power to the micro liquid pump. After the micro liquid pump is started, it can draw lubricating oil from the storage tank through the inlet pipe, and then deliver it to the inside of two spray guns through two sets of connecting pipes. Then it is sprayed outward onto the inside of the lubricating sponge. At this time, the lubricating sponge will be wetted by the lubricating oil. Then, as the piston rod extends and retracts, the lubricating oil inside the lubricating sponge can be evenly coated on the outer surface of the piston rod. This design can achieve active lubrication of the outer surface of the piston rod, and can effectively reduce the friction between the outer surface of the piston rod and the outer sealing ring and the two sets of inner sealing rings.

[0019] 2. In this utility model, by rotating the four sets of fixing bolts, it can be easily disengaged from the interior of the four sets of mounting plates. At this time, pulling the mounting sleeve can disengage it from the outer surface of the mounting base and it is no longer locked with the four sets of mounting plates. This can drive the entire fixing structure to disengage from the outer surface of the piston rod. This design makes it easier for operators to inspect the brake cylinder and piston rod, and also makes it easier to maintain or replace the outer sealing ring, lubricating sponge, and the two sets of inner sealing rings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a spray gun-type active lubrication brake cylinder in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partial exploded view of the structure of a spray gun-type active lubrication brake cylinder in one embodiment;

[0023] Figure 3 for Figure 1 A partial exploded view of the structure of a spray gun-type active lubrication brake cylinder in one embodiment;

[0024] Figure 4 for Figure 1 A partial cross-sectional schematic diagram of the fixing structure of a spray gun type active lubrication brake cylinder in one embodiment;

[0025] Figure 5 for Figure 1 A partial cross-sectional view of the structure of a spray gun-type active lubrication brake cylinder in one embodiment is shown.

[0026] In the diagram: 1. Cylinder body structure; 11. Brake cylinder; 12. Piston rod; 13. Mounting seat; 14. Mounting plate; 2. Fixing structure; 21. Mounting sleeve; 22. Connecting plate; 23. Fixing bolt; 24. Lubrication sleeve; 25. Outer sealing ring; 26. Lubricating sponge; 27. Inner sealing ring; 28. Injection hole; 3. Lubrication structure; 31. Liquid reservoir; 32. Sealing plug; 33. Connecting ring; 34. Miniature liquid pump; 35. Connecting pipe; 36. Spray gun. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0028] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1 to 5 As shown, this utility model provides a spray gun type active lubrication brake cylinder, including...

[0034] The cylinder structure 1 includes a brake cylinder 11, a piston rod 12, a mounting seat 13 and a mounting plate 14, and the mounting plate 14 is provided with four sets. The mounting seat 13 is fixedly connected to the outer surface of one end of the brake cylinder 11.

[0035] The fixing structure 2 includes a mounting sleeve 21, a lubrication sleeve 24, a lubrication sponge 26 and an injection hole 28. The inner surface of one end of the mounting sleeve 21 is fitted onto the outer surface of the mounting base 13.

[0036] The lubrication structure 3 includes a liquid storage tank 31, a connecting ring 33, a micro liquid pump 34, and a spray gun 36. There are two sets of connecting rings 33, and the two sets of connecting rings 33 are respectively fixedly connected to the outer surfaces of both sides of the lubrication sleeve 24.

[0037] The piston rod 12 is located inside the brake cylinder 11, and four sets of mounting plates 14 are fixedly connected to the outer surface of the mounting base 13.

[0038] The piston rod 12 can be fixedly connected to the railway freight car brake caliper by bolts. Then, activating the brake cylinder 11 can push the piston rod 12 to move the brake caliper, thereby achieving the effect of braking the train.

[0039] Four sets of mounting plates 14 are engaged inside one end of the mounting sleeve 21, and a connecting plate 22 is fixedly connected to the outer surface of the mounting sleeve 21. The connecting plate 22 has four sets, and each of the four sets of connecting plates 22 is threaded with a fixing bolt 23. The positions of the four sets of connecting plates 22 correspond to the positions of the four sets of mounting plates 14, and the lower ends of the four sets of fixing bolts 23 are threaded to the interior of the four sets of mounting plates 14.

[0040] The four sets of mounting plates 14 prevent the mounting sleeve 21 from rotating when it is fitted onto the outer surface of the mounting base 13. This allows the operator to more easily align the four sets of connecting plates 22 with the mounting plates 14. Then, rotating the four sets of fixing bolts 23 allows them to easily connect with the internal threads of the four sets of mounting plates 14. This fixes the position of the mounting sleeve 21 on the outer surface of the mounting base 13, effectively improving the stability of the connection between the mounting sleeve 21 and the mounting base 13.

[0041] The lubrication sleeve 24 is fixedly connected to the inner surface of the other end of the mounting sleeve 21, and the inner surface of the lubrication sleeve 24 is clearance-fitted with the outer surface of the piston rod 12, with a clearance of 0.1-0.2mm, to ensure smooth extension and retraction of the piston rod and prevent lubricating oil leakage. An outer sealing ring 25 is fixedly connected to the outer surface of one end of the lubrication sleeve 24, and the inner surface of the outer sealing ring 25 is interference-fitted with the outer surface of the piston rod 12.

[0042] The lubrication sleeve 24 can prevent dust from entering the gap between the piston rod 12 and the sealing ring, thus preventing impurities from affecting the lubrication effect. The outer sealing ring 25 can seal the inside of the lubrication sleeve 24, which can prevent the lubricating oil inside the lubrication sleeve 24 from flowing out with the extension and retraction of the piston rod 12, and can scrape off the dust attached to the outer surface of the piston rod 12 to prevent it from entering the inside of the lubrication sleeve 24.

[0043] The lubricating sponge 26 is located in the middle of the lubricating sleeve 24, and the inner surface of the lubricating sponge 26 is attached to the outer surface of the piston rod 12.

[0044] The lubricating sponge 26 prevents the lubricating oil inside the lubrication sleeve 24 from settling to the bottom. Due to the porous structure of the sponge, it can absorb and store a sufficient amount of lubricating oil like a "grease reservoir". Through the capillary action and slow penetration characteristics of the pores, it can achieve dynamic and uniform release of lubricating oil, thereby effectively lubricating the outer surface of the piston rod 12. The maintenance cycle of the lubricating sponge 26 is 3 months / 500 braking cycles, whichever comes first. When hardening or oil clumps are observed on the surface of the sponge, it should be replaced in time.

[0045] The inner sealing rings 27 are fixedly connected to the inner surfaces of both sides of the lubrication sleeve 24. The inner surfaces of the two sets of inner sealing rings 27 are interference-fitted with the outer surfaces of the piston rod 12. The surfaces of the two sets of inner sealing rings 27 on opposite sides are attached to the outer surfaces of the lubricating sponge 26. The two sets of injection holes 28 are respectively opened inside the outer surfaces of the lubrication sleeve 24. The two sets of injection holes 28 are connected to the interior of the lubrication sleeve 24.

[0046] The two sets of inner sealing rings 27 restrict the position of the lubricating sponge 26, preventing the lubricating sponge 26 from deflecting due to the extension and retraction of the piston rod 12. This ensures that the inner surface of the lubricating sponge 26 is always in contact with the outer surface of the piston rod 12. Furthermore, the two sets of inner sealing rings 27 provide a sealing effect on the inside of the lubricating sleeve 24, further preventing the leakage of lubricating oil from the inside of the lubricating sleeve 24, thereby effectively reducing lubricating oil consumption. The outer sealing ring 25 and the inner sealing ring 27 are made of fluororubber material, model: FKM-26, with a temperature resistance range of -20℃ to 200℃ and a hardness of 70±5 Shore A, ensuring good sealing performance and elasticity even in high-temperature environments.

[0047] The lower surface of the liquid storage tank 31 is fixedly connected to the upper ends of two sets of connecting rings 33 at both ends. The upper surface of the liquid storage tank 31 is threaded with a sealing plug 32, and a liquid storage cavity is opened inside the upper end of the liquid storage tank 31.

[0048] The sealing plug 32 can seal the inside of the liquid storage tank 31, preventing dust and other impurities from entering the inside of the liquid storage tank 31. After removing the sealing plug 32 from the inside of the upper surface of the liquid storage tank 31, lubricating oil can be added into the liquid storage cavity opened in the liquid storage tank 31.

[0049] The storage tank 31 has a miniature pump 34 installed inside its lower end, and the upper end of the miniature pump 34 is connected to an inlet pipe. The miniature pump 34 is connected to the storage chamber through the inlet pipe.

[0050] An external power source can provide power to the micro pump 34. After the micro pump 34 is started, it can draw lubricating oil from the inside of the storage chamber through the inlet pipe.

[0051] The micro pump 34 has connecting pipes 35 at both ends, and the two sets of connecting pipes 35 are respectively inserted into the two sets of connecting rings 33. The lower ends of the two sets of connecting pipes 35 are respectively connected to the interior of the two sets of spray guns 36.

[0052] The micro pump 34 delivers lubricating oil to the interior of the two sets of connecting pipes 35. The micro pump 34 uses a DC 24V power supply adapted to the railway freight car's on-board power system, with a rated pumping flow rate of 5-10 mL / min. The control logic adopts a 'piston rod stroke linkage' mode: by installing a limit switch (model LX19-001) on the inner wall of the brake cylinder 11, when the piston rod 12 extends or retracts by ≥30 mm in a single stroke, the limit switch triggers the micro pump 34 to start, with each start lasting 8-12 seconds, achieving on-demand quantitative supply of lubricating oil. The lubricating oil is then sprayed outwards through two sets of spray guns 36. The two sets of connecting rings 33 provide effective protection for the two sets of connecting pipes 35, effectively reducing the damage that the external environment may cause to the connecting pipes 35, thereby effectively preventing the connecting pipes 35 from breaking or leaking.

[0053] Among them, the two sets of spray guns 36 are fixedly connected to the inside of the outer surface of the two sets of connecting rings 33, and one end of the two sets of spray guns 36 is inserted into the inside of the two sets of injection holes 28.

[0054] Two sets of spray guns 36 can spray lubricating oil into the lubricating sponge 26 after passing through two sets of injection holes 28. The insertion end of the two sets of spray guns 36 is equipped with a rubber sealing ring at the interface with the injection hole 28, which can prevent lubricating oil from leaking out of the injection hole 28 and prevent lubricating oil from flowing into the interior of the two sets of connecting rings 33, thereby further reducing the consumption of lubricating oil.

[0055] The working principle and usage process of this utility model are as follows: First, lubricating oil is added to the inside of the reservoir 31. Then, the micro pump 34 is started to extract the lubricating oil. Then, the lubricating oil is sprayed into the inside of the lubricating sponge 26 through two sets of connecting pipes 35 and spray gun 36. The lubricating sponge 26 absorbs the lubricating oil and stores it inside. Then, when the brake cylinder 11 pushes the piston rod 12 to extend and retract, the lubricating sponge 26 can evenly lubricate the outer surface of the piston rod 12, which can effectively reduce the friction of the outer surface of the piston rod 12.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A spray gun-type active lubrication brake cylinder, characterized in that, include: The cylinder structure (1) includes a brake cylinder (11), a piston rod (12), a mounting seat (13) and a mounting plate (14), and the mounting plate (14) is provided with four sets. The mounting seat (13) is fixedly connected to the outer surface of one end of the brake cylinder (11). The fixing structure (2) includes a mounting sleeve (21), a lubrication sleeve (24), a lubrication sponge (26) and an injection hole (28). The inner surface of one end of the mounting sleeve (21) is fitted onto the outer surface of the mounting base (13). The lubrication structure (3) includes a liquid storage tank (31), a connecting ring (33), a micro liquid pump (34) and a spray gun (36). The connecting ring (33) is provided in two sets, and the two sets of connecting rings (33) are respectively fixedly connected to the outer surfaces of the two sides of the lubrication sleeve (24).

2. The spray gun type active lubrication brake cylinder according to claim 1, characterized in that: The piston rod (12) is located inside the brake cylinder (11), and the four sets of mounting plates (14) are fixedly connected to the outer surface of the mounting base (13).

3. The spray gun type active lubrication brake cylinder according to claim 1, characterized in that: The four sets of mounting plates (14) are engaged inside one end of the mounting sleeve (21), and a connecting plate (22) is fixedly connected to the outer surface of the mounting sleeve (21). The connecting plate (22) has four sets, and the interior of each of the four sets of connecting plates (22) is threaded with a fixing bolt (23). The positions of the four sets of connecting plates (22) correspond to the positions of the four sets of mounting plates (14), and the lower ends of the four sets of fixing bolts (23) are threaded to the interior of the four sets of mounting plates (14).

4. The spray gun type active lubrication brake cylinder according to claim 1, characterized in that: The lubrication sleeve (24) is fixedly connected to the inner surface of the other end of the mounting sleeve (21), and the inner surface of the lubrication sleeve (24) is clearance-fitted with the outer surface of the piston rod (12), with a fit clearance of 0.1-0.2mm, to ensure smooth extension and retraction of the piston rod and to prevent lubricating oil leakage. An outer sealing ring (25) is fixedly connected to the outer surface of one end of the lubrication sleeve (24), and the inner surface of the outer sealing ring (25) is interference-fitted with the outer surface of the piston rod (12).

5. A spray gun-type active lubrication brake cylinder according to claim 1, characterized in that: The lubricating sponge (26) is located in the middle of the lubricating sleeve (24), and the inner surface of the lubricating sponge (26) is attached to the outer surface of the piston rod (12).

6. A spray gun-type active lubrication brake cylinder according to claim 1, characterized in that: The inner sealing rings (27) are fixedly connected to the inner surfaces of both sides of the lubrication sleeve (24), and the inner surfaces of the two sets of inner sealing rings (27) are interference-fitted with the outer surfaces of the piston rod (12). The surfaces of the two sets of inner sealing rings (27) on opposite sides are attached to the outer surfaces of both sides of the lubricating sponge (26). The two sets of injection holes (28) are respectively opened inside the outer surfaces of the lubrication sleeve (24), and the two sets of injection holes (28) are connected to the interior of the lubrication sleeve (24).

7. A spray gun-type active lubrication brake cylinder according to claim 1, characterized in that: The two ends of the lower surface of the liquid storage tank (31) are fixedly connected to the upper ends of two sets of connecting rings (33), and the upper surface of the liquid storage tank (31) is threaded with a sealing plug (32). The upper end of the liquid storage tank (31) has a liquid storage cavity.

8. A spray gun-type active lubrication brake cylinder according to claim 7, characterized in that: The lower end of the liquid storage tank (31) is equipped with a micro pump (34), and the upper end of the micro pump (34) is connected to an inlet pipe. The micro pump (34) is connected to the liquid storage chamber through the inlet pipe.

9. A spray gun-type active lubrication brake cylinder according to claim 1, characterized in that: The micro pump (34) has connecting pipes (35) inside both ends, and the two sets of connecting pipes (35) are respectively inserted into the two sets of connecting rings (33). The lower ends of the two sets of connecting pipes (35) are respectively connected to the interior of the two sets of spray guns (36).

10. A spray gun-type active lubrication brake cylinder according to claim 1, characterized in that: The two sets of spray guns (36) are fixedly connected to the inside of the outer surface of the two sets of connecting rings (33), and one end of the two sets of spray guns (36) is inserted into the inside of the two sets of injection holes (28).

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