An oil injection mechanism for installing a railway passenger car axle bearing

Abstract

The utility model discloses a kind of oil injection mechanisms for railway passenger car wheel axle bearing installation, belong to oil injection equipment technical field, including oil injection head mounting plate, oil injection head mounting plate is fixedly arranged on assembling machine, oil injection head is provided in the left side of oil injection head mounting plate, oil injection head is cylinder structure, oil injection head left end is oil injection outer sleeve, inside is oil injection inner sleeve, oil injection outer sleeve and oil injection inner sleeve between are provided with grease chamber, grease chamber is communicated with oil supply system by oil pipe, multiple oil injection holes are evenly provided in the outer circumference of oil injection outer sleeve, multiple oil injection holes all penetrate oil injection outer sleeve.When passenger car bearing is injected, passenger car bearing is sleeved on oil injection outer sleeve, control oil injection pump starts, oil injection pump starts and grease in oil tank is transported to grease chamber by oil pipe, when oil injection quantity is enough, control oil injection pump to close, grease has pressure during oil supply, make it forcibly press into grease chamber, when oil injection, grease is conveniently injected into the inside of passenger car bearing by multiple oil injection holes.

Description

Technical Field

[0001] This utility model relates to the field of oil injection equipment technology, and more specifically, to an oil injection mechanism for installing railway passenger car wheel axle bearings. Background Technology

[0002] During the installation of railway passenger car wheel axle bearings, grease (butter) needs to be evenly injected into the bearings to ensure their lubrication performance and extend their service life. Currently, the traditional lubrication process involves assembling the wheelset, axle box, bearings, and other components into a single unit, and then having workers manually lubricate each bearing individually with a hand grease gun.

[0003] This manual lubrication method has several drawbacks: First, it involves high labor intensity for workers, low lubrication efficiency, and is difficult to adapt to the pace of large-scale production; second, the uniformity of manual lubrication is difficult to control precisely, easily affecting the bearing lubrication effect, which may adversely affect the overall performance of the wheel axle and the operational safety of railway passenger cars. With the development of automatic wheelset assembly technology, the existing manual lubrication method is not well-suited to the automated assembly process. There is an urgent need for a lubrication mechanism that can adapt to the automated assembly process to reduce the labor intensity of workers, improve the uniformity and efficiency of lubrication, and ensure the installation quality and performance of railway passenger car wheel axle bearings.

[0004] In view of this, the present invention is proposed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide an oil injection mechanism for installing railway passenger car wheel axle bearings, so as to solve the technical problem of low oil injection efficiency of railway passenger car wheel axle bearings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An oil injection mechanism for installing railway passenger car wheel axle bearings includes an oil injection head mounting plate, which is fixedly mounted on an assembly machine. The oil injection head is located on the left side of the oil injection head mounting plate. The oil injection head has a cylindrical structure. The left end of the oil injection head is an oil injection outer sleeve, and the inner side is an oil injection inner sleeve. A grease chamber is provided between the oil injection outer sleeve and the oil injection inner sleeve. The grease chamber is connected to the oil supply system through an oil pipe. Multiple oil injection holes are evenly opened on the outer circumference of the oil injection outer sleeve, and all the multiple oil injection holes penetrate the oil injection outer sleeve.

[0007] Furthermore, a center bushing is provided through the right end of the oil injection head mounting plate, and the left end of the center bushing extends into the right end of the oil injection head and is connected by bolts. A center shaft is provided inside the center shaft sleeve. The left end of the center shaft extends into the oil injection head and is aligned with the left end of the oil injection inner sleeve. A center is provided at the left end of the center shaft, and the center abuts against the bus wheel axle.

[0008] Furthermore, a directional sleeve is provided on the inner wall of the left end of the oil filling inner sleeve. The inner diameter of the directional sleeve is larger than the inner diameter of the oil filling inner sleeve. When the oil filling inner sleeve is connected to the bus wheel axle, the directional sleeve is fitted onto the front end of the bus wheel axle to orient the bus bearing.

[0009] Furthermore, a front sealing ring is provided between the left end of the oil injection outer sleeve and the left end of the oil injection inner sleeve, and a rear sealing ring is provided between the right end of the oil injection head and the center bushing.

[0010] Furthermore, the oil filling head is fitted with a sliding push plate, which is driven by a pneumatic component.

[0011] Furthermore, an adjusting spring is provided inside the upper right side wall of the push plate, and the right end of the adjusting spring abuts against the oil injection head mounting plate.

[0012] Furthermore, a retainer seal is coaxially fixed to the left end of the push plate, and the retainer seal is fitted onto the oil injection head.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. When lubricating the bus bearing, put the bus bearing on the lubrication sleeve, control the start of the lubrication pump, and the lubrication pump will deliver the grease in the oil tank to the grease chamber through the oil pipe. When the amount of grease is sufficient, control the lubrication pump to shut off. During the lubrication period, the grease is under pressure, which forces it into the grease chamber. When lubricating, it is easy to inject the grease into the interior of the bus bearing through multiple lubrication holes.

[0014] 2. Before lubricating the bus bearing, first place the center on the end face of the bus wheel axle, and then use the robot arm on the assembly machine to pull the bus bearing from the bus wheel axle onto the lubrication sleeve. The center is used to position the lubrication mechanism provided in this embodiment of the application so that the lubrication sleeve is coaxial and concentric with the bus wheel axle. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 A schematic diagram of the oiling process of the oiling mechanism for installing railway passenger car wheel axle bearings provided in this embodiment of the application; Figure 2 A schematic diagram of the structure of the oil injection mechanism for installing railway passenger car wheel axle bearings provided in the embodiments of this application.

[0016] Reference numerals in the attached diagram: 1. Oil filling head mounting plate; 2. Center shaft; 3. Center; 4. Push plate; 5. Bus bearing; 6. Cage seal; 7. Oil pipe; 8. Adjusting spring; 9. Rear seal ring; 10. Center shaft sleeve; 11. Front seal ring; 12. Oil filling head; 13. Oil filling outer sleeve; 14. Oil filling hole; 15. Oil filling inner sleeve; 16. Orientation sleeve; 17. Grease chamber. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0018] See Figures 1 to 2 As shown, a lubrication mechanism for installing railway passenger car wheel axle bearings includes a lubrication head mounting plate 1, which is fixedly mounted on an assembly machine. A lubrication head 12 is provided on the left side of the lubrication head mounting plate 1. The lubrication head 12 has a cylindrical structure. The left end of the lubrication head 12 is a lubrication outer sleeve 13, and the inner side is a lubrication inner sleeve 15. A grease chamber 17 is provided between the lubrication outer sleeve 13 and the lubrication inner sleeve 15. The grease chamber 17 is connected to the oil supply system through an oil pipe 7. Multiple oil injection holes 14 are evenly opened on the outer circumference of the lubrication outer sleeve 13, and all the multiple oil injection holes 14 penetrate the lubrication outer sleeve 13. The oil supply system includes an oil pump and an oil tank. The oil pump is connected to the oil pipe 7.

[0019] In the above scheme, when lubricating the bus bearing 5, the bus bearing 5 is fitted onto the lubrication sleeve 13, and the lubrication pump is started. The lubrication pump delivers the grease in the oil tank to the grease chamber 17 through the oil pipe 7. When the amount of grease is sufficient, the lubrication pump is turned off. During the oil supply, the grease is under pressure, which forces it into the grease chamber 17. During the lubrication, it is easy to inject the grease into the interior of the bus bearing 5 through multiple oil injection holes 14.

[0020] See some possible implementations. Figure 1 and Figure 2 As shown, a center bushing 10 is provided through the right end of the oil filling head mounting plate 1. The left end of the center bushing 10 extends into the right end of the oil filling head 12 and is connected by bolts. A center shaft 2 is provided inside the center bushing 10. The left end of the center shaft 2 extends into the oil filling head 12 and is aligned with the left end of the oil filling inner sleeve 15. A center 3 is provided at the left end of the center shaft 2. The center 3 abuts against the passenger wheel axle.

[0021] In the above scheme, before lubricating the bus bearing 5, the center 3 is first placed on the end face of the bus wheel axle, and then the robot arm on the assembly machine pulls the bus bearing 5 from the bus wheel axle onto the lubrication sleeve 13. The center 3 is used to position the lubrication mechanism provided in this application embodiment so that the lubrication sleeve 13 is coaxial and concentric with the bus wheel axle.

[0022] See some possible implementations. Figure 2 As shown, a directional sleeve 16 is provided on the inner wall of the left end of the oil filling inner sleeve 15. The inner diameter of the directional sleeve 16 is larger than the inner diameter of the oil filling inner sleeve 15. When the oil filling inner sleeve 15 is connected to the passenger wheel axle, the directional sleeve 16 is fitted on the front end of the passenger wheel axle to orient the passenger bearing 5.

[0023] See some possible implementations. Figure 2 As shown, a front sealing ring 11 is provided between the left end of the oil filling outer sleeve 13 and the left end of the oil filling inner sleeve 15, and a rear sealing ring 9 is provided between the right end of the oil filling head 12 and the center bushing 10. The front sealing ring 11 and the rear sealing ring 9 are used to seal the grease.

[0024] See some possible implementations. Figure 1 As shown, a sliding push plate 4 is mounted on the oil filling head 12. The push plate 4 is driven by a pneumatic component, which is a pneumatic push rod or cylinder. After the oil filling is completed, the pneumatic component is started. The start of the pneumatic component drives the push plate 4 to slide to the left. The push plate 4 sliding to the left drives the bus bearing 5 to slide to the left, and makes the bus bearing 5 slide onto the bus wheel axle.

[0025] See some possible implementations. Figure 1 As shown, an adjusting spring 8 is provided inside the upper right side wall of the push plate 4. The right end of the adjusting spring 8 abuts against the oil injection head mounting plate 1. When the push plate 4 is in contact with the left side of the oil injection head mounting plate 1, the right end of the adjusting spring 8 abuts against the oil injection head mounting plate 1. By adjusting the elastic force of the adjusting spring 8, the push plate 4 is always kept perpendicular to the oil injection head 12.

[0026] See some possible implementations. Figure 1 As shown, a retainer seal 6 is coaxially fixed at the left end of the push plate 4. The retainer seal 6 is fitted onto the oil injection head 12 and is used to seal the left end of the push plate 4.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lubrication mechanism for installing railway passenger car wheel axle bearings, characterized in that, Includes an oil injection head mounting plate (1), which is fixedly mounted on the assembly machine; An oil injection head (12) is provided on the left side of the oil injection head mounting plate (1). The oil injection head (12) is a cylindrical structure. The left end of the oil injection head (12) is an oil injection outer sleeve (13), and the inner side is an oil injection inner sleeve (15). A grease chamber (17) is provided between the oil injection outer sleeve (13) and the oil injection inner sleeve (15). The grease chamber (17) is connected to the oil supply system through an oil pipe (7). Multiple oil injection holes (14) are evenly opened on the outer circumference of the oil injection outer sleeve (13), and the multiple oil injection holes (14) all penetrate the oil injection outer sleeve (13).

2. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 1, characterized in that, The right end of the oil injection head mounting plate (1) is provided with a center bushing (10), and the left end of the center bushing (10) extends into the right end of the oil injection head (12) and is connected by bolts. The top bushing (10) is provided with a top shaft (2), the left end of the top shaft (2) extends into the oil injection head (12) and is aligned with the left end of the oil injection inner sleeve (15), and the left end of the top shaft (2) is provided with a top (3), which abuts against the passenger wheel axle.

3. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 2, characterized in that, The inner wall of the left end of the oil filling sleeve (15) is provided with a directional sleeve (16). The inner diameter of the directional sleeve (16) is larger than the inner diameter of the oil filling sleeve (15). When the oil filling sleeve (15) is connected to the passenger wheel axle, the directional sleeve (16) is fitted on the front end of the passenger wheel axle to orient the passenger bearing (5).

4. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 3, characterized in that, A front sealing ring (11) is provided between the left end of the oil injection outer sleeve (13) and the left end of the oil injection inner sleeve (15), and a rear sealing ring (9) is provided between the right end of the oil injection head (12) and the center bushing (10).

5. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 4, characterized in that, The oil injection head (12) is fitted with a sliding push plate (4), which is driven by a pneumatic component.

6. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 5, characterized in that, An adjusting spring (8) is provided inside the upper right side wall of the push plate (4), and the right end of the adjusting spring (8) abuts against the oil injection head mounting plate (1).

7. The oil injection mechanism for installing railway passenger car wheel axle bearings according to claim 6, characterized in that, The left end of the push plate (4) is coaxially fixed with a retainer seal (6), which is fitted onto the oil injection head (12).

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