An oil dipstick for locomotive gearbox

Abstract

The present invention discloses an oil dipstick for a locomotive gearbox, comprising a refueling cylinder, a refueling port sealing cover, a protective shell, an oil dipstick mechanism, an oil-resistant rubber plug, a pressure plate, and a cotter pin. One end of the refueling cylinder is welded to the gearbox, and the other end of the refueling cylinder is plugged with an oil-resistant rubber plug. The oil-resistant rubber plug is located on one side inside the refueling cylinder and is fixedly connected to a pressure plate. The middle part of the pressure plate is threadedly connected to the oil dipstick mechanism. The outer side of the oil-resistant rubber plug is fixedly connected to the refueling port sealing cover. The top of the refueling port sealing cover is equipped with a protective shell, and the middle part of the oil dipstick mechanism is equipped with a cotter pin. After adopting the above structure, the oil dipstick can be easily installed and the seal becomes firm, which avoids the connection between the locomotive gearbox oil dipstick and the box body from becoming easily loose, and also avoids safety accidents caused by falling off, and the length of the oil mark rod can be adjusted to detect oil consumption at different depths.

Description

Technical Field

[0001] The invention relates to the technical field of locomotive oil dipsticks, and in particular to an oil dipstick for a locomotive gearbox. Background Art

[0002] During the use of the locomotive gearbox, the gear oil loss in the box should be observed regularly so that gear oil can be added; the amount of gear oil is reflected by the position of the dipstick measuring part; the current gearbox oil dipstick is only used to check the gear oil level, and its working principle is to install an oil dipstick in the gearbox, and the measuring part of the oil dipstick detects the gear oil level. The oil dipstick only plays a role in detecting the oil level, and most of the locomotive gearbox oil dipsticks are currently connected to the box body with threaded connections, which have the disadvantages of being easy to loosen or fall off, causing safety accidents, and the length of the measuring part cannot be adjusted, which is not convenient for measuring low oil levels. Summary of the invention

[0003] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide an oil dipstick for a locomotive gearbox, which increases the friction coefficient of the contact surface between the oil-resistant rubber plug and the refueling cylinder by opening a first internal thread on the inner wall of the refueling cylinder, further fixes the oil dipstick, and makes the installation of the oil dipstick more secure and not easy to fall off. By setting a protective shell, it is ensured that in the case of installation and disassembly, external factors cannot cause the oil dipstick cross bar to rotate, resulting in the loose installation of the oil dipstick. By setting a limit pin, a first limit hole and a second limit hole for coordinated installation, the length of the oil mark rod can be flexibly adjusted, which is convenient for measuring the oil volume under different extreme conditions, and is also convenient for disassembly and cleaning. On the whole, the structure is simple and clear, and installation and disassembly are convenient. In addition, by setting an oil-resistant rubber plug, the extrusion is stable, replacing the threaded connection, so that the installation of the oil dipstick is more secure and prevents loosening and falling off.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A dipstick for a locomotive gearbox, comprising a refueling cylinder, a refueling port sealing cover, a protective shell, an oil dipstick mechanism, an oil-resistant rubber plug, a pressure plate, and a cotter pin. One end of the refueling cylinder is welded to the gearbox, and the other end of the refueling cylinder is plugged with an oil-resistant rubber plug. The oil-resistant rubber plug is located inside the refueling cylinder and is fixedly connected to a pressure plate on one side thereof. The middle portion of the pressure plate is threadedly connected to the oil dipstick mechanism. The outer side of the oil-resistant rubber plug is fixedly connected to the refueling port sealing cover. The top of the refueling port sealing cover is provided with a protective shell, and the middle portion of the oil dipstick mechanism is provided with a cotter pin.

[0006] As a further solution of the present invention: a first internal thread is provided on the inner wall of the refueling cylinder, and the first internal thread is located in the middle section of the inner wall of the refueling cylinder.

[0007] As a further solution of the present invention: an annular mounting groove is provided on the top of the fuel filler port sealing cover, a first external thread is provided on the inner side surface of the annular mounting groove, the protective shell is a cylindrical structure, and an air avoidance groove is provided inside the protective shell, a second internal thread is provided on the top of the air avoidance groove wall, and the protective shell is threadably connected to the first external thread via the second internal thread.

[0008] As a further solution of the present invention: a through hole is provided in the middle of the oil-resistant rubber plug, a mounting hole is provided in the middle of the pressure plate, a third internal thread is provided inside the mounting hole, and a diameter of the through hole is larger than an outer diameter of the third internal thread.

[0009] As a further solution of the present invention: the oil dipstick mechanism includes a first connecting rod, a second external thread is provided on the axial surface of the bottom end of the first connecting rod, the first connecting rod is threadedly connected to the third internal thread of the pressure plate through the second external thread, the end of the first connecting rod away from the pressure plate passes through the through hole and is rotatably installed in the middle of the oil filling port sealing cover, and the end of the first connecting rod away from the pressure plate extends to the outside of the oil filling port sealing cover and is fixedly connected with an oil dipstick cross bar, the end of the first connecting rod close to the pressure plate is fixedly connected with the second connecting rod, a cotter pin is fixedly installed above the connection between the first connecting rod and the second connecting rod, a first installation groove is provided at the other end of the second connecting rod, a plurality of first limiting holes are symmetrically provided on both sides of the first installation groove, an oil mark rod is inserted in the first installation groove, a plurality of second limiting holes are provided on the top of the oil mark rod, and the positions of the plurality of second limiting holes correspond to the plurality of first limiting holes one by one, the oil mark rod is fixedly installed in the first installation groove through the limiting pin passing through the corresponding first limiting hole and second limiting hole, and the bottom end of the oil mark rod is marked with a high mark line and a low mark line, and the high mark line is located above the low mark line.

[0010] As a further solution of the present invention: an anti-skid thread is provided on the rotating handle of the oil dipstick cross bar, and the diameter of the connecting column of the oil dipstick cross bar is larger than the diameter of the first connecting rod.

[0011] As a further solution of the present invention: the method for using the oil dipstick for a locomotive gearbox is:

[0012] Before installation, keep the oil-resistant rubber plug loose and adjust the length of the oil gauge rod. During installation, unscrew the protective shell and insert the oil-resistant rubber plug into the refueling cylinder until the refueling port sealing cover covers the mouth of the refueling cylinder. Then, turn the oil dipstick crossbar to drive the first connecting rod to rotate. The first connecting rod drives the pressure plate to move up. The pressure plate moves up to compress the oil-resistant rubber plug, causing it to expand and contact closely with the wall of the refueling cylinder. The installation is completed.

[0013] When observing and measuring the oil level, turn the dipstick bar in the opposite direction to drive the first connecting rod to rotate. The first connecting rod drives the pressure plate to move downward, releases the compressed oil-resistant rubber plug, and pulls out to observe the immersion mark on the oil gauge rod.

[0014] Beneficial effects of the present invention:

[0015] 1. The present invention increases the friction coefficient of the contact surface between the oil-resistant rubber plug and the refueling cylinder by opening a first internal thread on the inner wall of the refueling cylinder, further fixes the oil dipstick, and makes the oil dipstick more firmly installed and not easy to fall off.

[0016] 2. The present invention provides a protective housing to ensure that, except for installation and disassembly, external factors cannot cause the dipstick crossbar to rotate, resulting in the loosening of the dipstick installation.

[0017] 3. The present invention arranges a limit pin, a first limit hole and a second limit hole for coordinated installation, so as to flexibly adjust the length of the oil mark rod, facilitate measurement of the oil volume under different extreme conditions, and also facilitate disassembly and cleaning.

[0018] 4. The present invention as a whole has a simple and clear structure, is easy to install and disassemble, and is provided with an oil-resistant rubber plug, which is firmly squeezed and replaces the threaded connection, making the oil dipstick installation more stable and avoiding loosening and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0022] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of the middle B area;

[0023] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of the middle C area.

[0024] In the figure: 1. refueling cylinder; 11. first internal thread; 2. refueling port sealing cover; 21. annular mounting groove; 211. first external thread; 3. protective shell; 4. oil dipstick mechanism; 41. oil dipstick cross bar; 411. anti-skid thread; 42. first connecting rod; 421. second external thread; 43. second connecting rod; 431. first limiting hole; 432. first mounting groove; 44. oil mark rod; 441. second limiting hole; 442. limiting pin; 443. high mark line; 444. low mark line; 5. oil-resistant rubber plug; 6. pressure plate; 7. cotter pin. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-4 As shown, an oil dipstick for a locomotive gearbox comprises a refueling cylinder 1, a refueling port sealing cover 2, a protective shell 3, an oil dipstick mechanism 4, an oil-resistant rubber plug 5, a pressure plate 6, and a cotter pin 7. One end of the refueling cylinder 1 is welded to the gearbox, and the other end of the refueling cylinder 1 is plugged with an oil-resistant rubber plug 5. The oil-resistant rubber plug 5 is located on one side inside the refueling cylinder 1 and is fixedly connected to a pressure plate 6. The middle part of the pressure plate 6 is threadedly connected to the oil dipstick mechanism 4. The outer side of the oil-resistant rubber plug 5 is fixedly connected to the refueling port sealing cover 2. The top of the refueling port sealing cover 2 is installed with a protective shell 3, and the middle part of the oil dipstick mechanism 4 is installed with a cotter pin 7.

[0027] A first internal thread 11 is provided on the inner wall of the refueling cylinder 1, and the first internal thread 11 is located in the middle section of the inner wall of the refueling cylinder 1, which increases the friction coefficient of the contact surface between the oil-resistant rubber plug 5 and the refueling cylinder 1, further fixes the oil dipstick, and makes the oil dipstick more firmly installed and not easy to fall off.

[0028] An annular mounting groove 21 is provided on the top of the fuel filler port sealing cover 2, a first external thread 211 is provided on the inner side surface of the annular mounting groove 21, the protective shell 3 is in a cylindrical structure, and an air avoidance groove is provided inside the protective shell 3, a second internal thread is provided on the top of the air avoidance groove wall, and the protective shell 3 is threadedly connected to the first external thread 211 via the second internal thread; by providing the protective shell 3, it is ensured that, except for installation and disassembly, external factors cannot cause the oil dipstick cross bar 41 to rotate, causing the oil dipstick to be loosely installed.

[0029] A through hole is provided in the middle of the oil-resistant rubber plug 5, and a mounting hole is provided in the middle of the pressure plate 6. A third internal thread is provided inside the mounting hole, and the through hole diameter is larger than the outer diameter of the third internal thread, so as to avoid excessive jamming of the first connecting rod 42 during installation and rotation, thereby making installation more convenient.

[0030] The dipstick mechanism 4 includes a first connecting rod 42, a second external thread 421 is provided on the axial surface of the bottom end of the first connecting rod 42, the first connecting rod 42 is threadedly connected to the third internal thread of the pressure plate 6 through the second external thread 421, the end of the first connecting rod 42 away from the pressure plate 6 passes through the through hole and is rotatably installed in the middle of the fuel filler port sealing cover 2, and the end of the first connecting rod 42 away from the pressure plate 6 extends to the outside of the fuel filler port sealing cover 2 and is fixedly connected to the dipstick cross bar 41, the end of the first connecting rod 42 close to the pressure plate 6 is fixedly connected to the second connecting rod 43, and a cotter pin 7 is fixedly installed above the connection between the first connecting rod 42 and the second connecting rod 43 to prevent the pressure plate 6 from retreating excessively and causing the pressure plate 6 to fall off, and the other end of the second connecting rod 43 is provided with a first mounting groove 432, the first mounting groove 43 A plurality of first limiting holes 431 are symmetrically provided on both sides of the interior, an oil gauge rod 44 is inserted into the first installation groove 432, a plurality of second limiting holes 441 are provided on the top of the oil gauge rod 44, and the plurality of second limiting holes 441 correspond to the plurality of first limiting holes 431 in position. The oil gauge rod 44 is fixedly installed in the first installation groove 432 by passing through the corresponding first limiting holes 431 and the second limiting holes 441 through the limiting pin 442, and a high mark line 443 and a low mark line 444 are marked on the bottom of the oil gauge rod 44, and the high mark line 443 is located above the low mark line 444; by setting the limiting pin 442, the first limiting hole 431 and the second limiting hole 441 for coordinated installation, the length of the oil gauge rod 44 can be flexibly adjusted, so as to facilitate the measurement of the oil volume under different extreme conditions, and also facilitate the disassembly and cleaning.

[0031] The rotating handle of the dipstick cross bar 41 is provided with an anti-skid thread 411 to prevent injuries caused by hand slipping during rotation. The connecting column diameter of the dipstick cross bar 41 is larger than the diameter of the first connecting rod 42 to further prevent the dipstick from moving up and down.

[0032] The method of using the oil dipstick for locomotive gearbox is as follows:

[0033] Before installation, keep the oil-resistant rubber plug 5 loose. The diameter of the loose oil-resistant rubber plug 5 is smaller than the inner diameter of the refueling cylinder 1, which is convenient for installation. According to the actual situation, adjust the length of the oil mark rod 44. During installation, unscrew the protective shell 3 and insert the oil-resistant rubber plug 5 into the refueling cylinder 1 until the refueling port sealing cover 2 covers the mouth of the refueling cylinder 1. After that, turn the oil dipstick cross bar 41 to drive the first connecting rod 42 to rotate. The first connecting rod 42 drives the pressure plate 6 to move upward. The pressure plate 6 moves upward to compress the oil-resistant rubber plug 5, so that it expands and contacts closely with the wall of the refueling cylinder 1. The installation is completed.

[0034] When observing and measuring the oil level, the dipstick cross bar 41 is screwed in the opposite direction to drive the first connecting rod 42 to rotate, and the first connecting rod 42 drives the pressure plate 6 to move downward, releasing the compressed oil-resistant rubber plug 5, and pulling out the immersion mark on the oil mark rod 44 to observe.

[0035] Working principle of the present invention:

[0036] Before installation, keep the oil-resistant rubber plug 5 loose. The diameter of the loose oil-resistant rubber plug 5 is smaller than the inner diameter of the refueling cylinder 1, which is convenient for installation. According to the actual situation, adjust the length of the oil mark rod 44. During installation, unscrew the protective shell 3 and insert the oil-resistant rubber plug 5 into the refueling cylinder 1 until the refueling port sealing cover 2 covers the mouth of the refueling cylinder 1. After that, turn the oil dipstick cross bar 41 to drive the first connecting rod 42 to rotate. The first connecting rod 42 drives the pressure plate 6 to move upward. The pressure plate 6 moves upward to compress the oil-resistant rubber plug 5, causing it to expand and contact the wall of the refueling cylinder 1. Close contact, installation is completed, when observing and measuring the oil level, turn the dipstick cross bar 41 in the opposite direction to drive the first connecting rod 42 to rotate, the first connecting rod 42 drives the pressure plate 6 to move downward, releases the compressed oil-resistant rubber plug 5, pulls out and observes the immersion mark on the oil gauge rod 44; by setting this dipstick, the problem of most locomotive gearbox oil dipsticks and the box body being connected by threaded connection is solved, which has the disadvantage of being easy to loosen and fall off and cause safety accidents. At the same time, the functionality of the oil dipstick is further improved through the flexibly adjustable oil gauge rod 44.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A dipstick for a locomotive gearbox, characterized in that: It comprises a refueling cylinder (1), a refueling port sealing cover (2), a protective shell (3), an oil dipstick mechanism (4), an oil-resistant rubber plug (5), a pressure plate (6), and a split pin (7), wherein one end of the refueling cylinder (1) is welded to a gear box, and the other end of the refueling cylinder (1) is plugged with an oil-resistant rubber plug (5), one side of the oil-resistant rubber plug (5) located inside the refueling cylinder (1) is fixedly connected to a pressure plate (6), the middle part of the pressure plate (6) is threadedly connected to the oil dipstick mechanism (4), the outer side of the oil-resistant rubber plug (5) is fixedly connected to the refueling port sealing cover (2), the top of the refueling port sealing cover (2) is installed with a protective shell (3), and the middle part of the oil dipstick mechanism (4) is installed with a split pin (7); A first internal thread (11) is provided on the inner wall of the refueling cylinder (1), and the first internal thread (11) is located in the middle section of the inner wall of the refueling cylinder (1); The oil dipstick mechanism (4) comprises a first connecting rod (42), a second external thread (421) is provided on the axial surface of the bottom end of the first connecting rod (42), the first connecting rod (42) is threadedly connected to the third internal thread of the pressure plate (6) through the second external thread (421), the end of the first connecting rod (42) away from the pressure plate (6) passes through a through hole and is rotatably mounted on the middle part of the oil filling port sealing cover (2), and the end of the first connecting rod (42) away from the pressure plate (6) extends to the outside of the oil filling port sealing cover (2) and is fixedly connected to the oil dipstick cross bar (41), the end of the first connecting rod (42) close to the pressure plate (6) is fixedly connected to the second connecting rod (43), a cotter pin (7) is fixedly installed above the connection between the first connecting rod (42) and the second connecting rod (43), the other end of the second connecting rod (43) is provided with a first mounting groove (432), and the first mounting groove (432) is fixedly mounted on the top of the second connecting rod (43). A plurality of first limiting holes (431) are symmetrically provided on both sides of the mounting groove (432); an oil gauge rod (44) is inserted into the first mounting groove (432); a plurality of second limiting holes (441) are provided on the top of the oil gauge rod (44); the plurality of second limiting holes (441) correspond to the plurality of first limiting holes (431) in position; the oil gauge rod (44) is fixedly installed in the first mounting groove (432) by passing through the corresponding first limiting holes (431) and the second limiting holes (441) via limiting pins (442); a high mark line (443) and a low mark line (444) are marked on the bottom end of the oil gauge rod (44); and the high mark line (443) is located above the low mark line (444); an anti-slip thread (411) is provided on the rotating handle of the oil dipstick cross bar (41); and the diameter of the connecting column of the oil dipstick cross bar (41) is larger than the diameter of the first connecting rod (42).

2. The oil dipstick for a locomotive gearbox according to claim 1, characterized in that: The top of the oil filling port sealing cover (2) is provided with an annular mounting groove (21), the inner side surface of the annular mounting groove (21) is provided with a first external thread (211), the protective shell (3) is in a cylindrical structure, and an air avoidance groove is provided inside the protective shell (3), the top of the air avoidance groove wall is provided with a second internal thread, and the protective shell (3) is threadedly connected to the first external thread (211) via the second internal thread.

3. The oil dipstick for a locomotive gearbox according to claim 1, characterized in that: A through hole is provided in the middle of the oil-resistant rubber plug (5), a mounting hole is provided in the middle of the pressure plate (6), a third internal thread is provided inside the mounting hole, and the through hole diameter is larger than the outer diameter of the third internal thread.

4. The oil dipstick for a locomotive gearbox according to claim 1, characterized in that: The method of using the oil dipstick for locomotive gearbox is as follows: Before installation, keep the oil-resistant rubber plug (5) loose and adjust the length of the oil gauge rod (44). During installation, unscrew the protective housing (3) and insert the oil-resistant rubber plug (5) into the refueling cylinder (1) until the refueling port sealing cover (2) covers the mouth of the refueling cylinder (1). Then, turn the oil dipstick cross bar (41) to drive the first connecting rod (42) to rotate. The first connecting rod (42) drives the pressure plate (6) to move upward. The pressure plate (6) moves upward to compress the oil-resistant rubber plug (5) so that it expands and contacts closely with the wall of the refueling cylinder (1). The installation is completed. When observing and measuring the oil level, the dipstick crossbar (41) is twisted in the opposite direction to drive the first connecting rod (42) to rotate, and the first connecting rod (42) drives the pressing plate (6) to move downward, releasing the compressed oil-resistant rubber plug (5), and pulling out to observe the immersion mark on the oil gauge rod (44).

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