Gearbox vent plugging device

Abstract

The utility model relates to the technical field of gearboxes, in particular to a gearbox vent plugging device which comprises a pin shaft (1). One end of the pin shaft (1) is connected with a handle (2); the other end of the pin shaft (1) is connected with a screw rod (3); a special-shaped bolt (4) is arranged on the pin shaft (1); a first nut (5) is arranged at one end of the screw rod (3); a tensioning ring (6) is arranged between the special-shaped bolt (4) and the first nut (5). The tensioning ring (6) is arranged in the air vent; the device has extremely high sealing performance, convenience and flexibility, the tensioning ring is plugged into the ventilation opening, the handle is broken to 90 degrees to extrude the tensioning ring, the tensioning ring is tensioned to block the ventilation opening, and the phenomenon that oil leaks from the ventilation opening when oil needs to be added in the gearbox assembling process is avoided, so that assembling work is facilitated, and the requirement for neat appearance is met.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, and in particular to a gearbox vent blocking device. Background Art

[0002] The gearbox assembly process involves the gearbox refueling process; currently during the gearbox refueling process, the vent position is not blocked due to incomplete assembly, which will cause oil leakage from the vent.

[0003] After searching, the applicant found that the Chinese patent document with publication number 113719602A disclosed a gearbox ventilation device and a gearbox on November 30, 2021. The device includes a seal, a sleeve, a sealing ball and a first connecting protrusion. The seal is provided with a first through hole along the length direction of the seal, and a groove is provided at the first end of the seal. The groove is connected to the first end of the first through hole, and the second end of the first through hole is used to communicate with the cavity of the gearbox; the sealing ball is movably arranged in the groove, and the sealing ball can block the first through hole; the sleeve is fitted on the first end of the seal, and a movable gap is provided between the sealing ball and the sleeve, and an exhaust gap is provided between the groove and the sleeve. The sealing sleeve has a side plate, and the side plate gap is provided on the side of the first end of the seal; the first connecting protrusion is provided between the side plate and the side of the first end of the seal, and a second through hole is provided on the first connecting protrusion; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a gearbox vent blocking device that can block the vent to prevent oil leakage when the gearbox is assembled. Utility Model Content

[0005] The utility model aims to provide a gearbox vent blocking device which can block the vent to prevent oil leakage when the gearbox is assembled.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a gearbox vent sealing device, including a pin shaft; one end of the pin shaft is connected to a handle; the other end of the pin shaft is connected to a screw rod; a special-shaped bolt is provided on the pin shaft; one end of the screw rod is provided with a first nut; a tightening ring is provided between the special-shaped bolt and the first nut; and the tightening ring is arranged in the vent.

[0007] The pin shaft is provided with a pin; the handle includes a mounting slot; baffles are provided on both sides of the mounting slot; the pin shaft is arranged in the mounting slot; and the pin is connected to the baffle.

[0008] The special-shaped bolt is provided with a mounting hole; the pin shaft is sleeved in the mounting hole; the special-shaped bolt includes a second nut; the bottom of the baffle is provided with an extension section; the extension section is tightly pressed against the second nut.

[0009] A sealing gasket is connected to the special-shaped bolt; the sealing gasket is arranged at the end of the special-shaped bolt; a special-shaped gasket is provided between the second nut and the sealing gasket; the special-shaped gasket is tightly pressed against the sealing gasket.

[0010] The sealing gasket includes a stopper and a mounting sleeve; a sealing gasket is provided on the side of the stopper away from the second nut; an iron sheet is provided at the end of the mounting sleeve; the tightening ring is sleeved on the iron sheet, and one end of the tightening ring is pressed against the sealing gasket; the other end of the tightening ring is pressed against the first nut.

[0011] The special-shaped bolt is provided with an external thread; the special-shaped gasket and the sealing gasket block are both connected to the external thread.

[0012] A threaded hole is provided at the end of the pin shaft away from the pin; a stud is provided at one end of the screw rod; and the stud is connected to the threaded hole.

[0013] The beneficial effects of this application are:

[0014] In order to address the shortcomings of oil leakage from the vent sometimes during the gearbox assembly process when oil needs to be refueled, the gearbox vent sealing device uses the expansion principle to completely block the vent, which can prevent oil leakage from the vent during the refueling process of an incompletely assembled gearbox. The device has extremely strong sealing, convenience and flexibility. The expansion ring is inserted into the vent, and the handle is bent to 90 degrees to squeeze the expansion ring. The expansion ring is tightened to block the vent. When oil needs to be refueled during the gearbox assembly process, there will be no oil leakage from the vent, which facilitates the assembly work and meets the requirements of a neat appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a structural schematic diagram of the gearbox vent sealing device.

[0017] Figure 2 This is a cross-sectional view of the transmission vent sealing device.

[0018] Figure 3 This is a schematic diagram of the connection structure between the sealing gasket and the special-shaped bolts of the transmission vent sealing device.

[0019] The marks in the above figure are:

[0020] The following are marked in the figure:

[0021] 1. Pin, 101. Pin, 102. Threaded hole,

[0022] 2. Handle, 201. Mounting slot, 202. Baffle, 203. Extension section,

[0023] 3. Screw, 301, stud,

[0024] 4. Special-shaped bolt, 401, second nut, 402, external thread,

[0025] 5. First nut,

[0026] 6. Tension ring,

[0027] 7. Sealing gasket, 701. Stopper, 702. Mounting sleeve, 703. Iron sheet,

[0028] 8. Special-shaped gaskets,

[0029] 9. Sealing gasket. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0031] Figure 1 The transmission vent sealing device shown includes a pin 1; a handle 2 is connected to one end of the pin 1; a screw 3 is connected to the other end of the pin 1; a special-shaped bolt 4 is provided on the pin 1; a first nut 5 is provided at one end of the screw 3; a tightening ring 6 is provided between the special-shaped bolt 4 and the first nut 5; and the tightening ring 6 is provided in the vent.

[0032] This device has extremely strong sealing, convenience and flexibility. The expansion ring 6 is inserted into the vent, and the handle 2 is bent to 90 degrees to squeeze the expansion ring 6. The expansion ring 6 is tightened to block the vent. When oil needs to be added during the assembly of the gearbox, there will be no oil leakage from the vent, which facilitates the assembly work and meets the requirements of neat appearance.

[0033] The pin shaft 1 is provided with a pin 101 ; the handle 2 includes a mounting groove 201 ; baffles 202 are provided on both sides of the mounting groove 201 ; the pin shaft 1 is provided in the mounting groove 201 ; the pin 101 is connected to the baffle 202 .

[0034] The pin 101 is fixedly connected to the end of the pin shaft 1; the mounting groove 201 is provided at the end of the handle 2 and is a through groove; baffles 202 are provided on both sides of the mounting groove 201, and the baffles 202 and the handle 2 are an integral structure; a through hole is provided on the baffle 202; both ends of the pin 101 are installed in the through holes; so that the handle 2 can be flexibly rotated with the pin shaft 1 through the pin 101; the extension section 203 is provided at the bottom of the baffle 202 and is an integral structure with the baffle 202.

[0035] The special-shaped bolt 4 is provided with a mounting hole; the pin 1 is sleeved in the mounting hole; the special-shaped bolt 4 includes a second nut 401; the bottom of the baffle 202 is provided with an extension section 203; the extension section 203 is tightly pressed against the second nut 401.

[0036] The pin shaft 1 is sleeved in the mounting hole and can move axially in the mounting hole; the second nut 401 is arranged at the end of the special-shaped bolt 4; the handle 2 is bent to 90 degrees, and the extension section 203 squeezes the second nut 401, driving the special-shaped bolt 4 to move axially along the pin shaft 1, thereby squeezing the tightening ring 6 to perform a tightening operation in the vent.

[0037] A sealing gasket 7 is connected to the special-shaped bolt 4 ; the sealing gasket 7 is arranged at the end of the special-shaped bolt 4 ; a special-shaped gasket 8 is provided between the second nut 401 and the sealing gasket 7 ; the special-shaped gasket 8 is tightly pressed against the sealing gasket 7 .

[0038] Both the sealing gasket block 7 and the special-shaped gasket 8 are provided with threaded holes; both the sealing gasket block 7 and the special-shaped gasket 8 are threadedly connected to the special-shaped bolt 4; the internal thread of the special-shaped gasket 8 is connected to the special-shaped bolt 4 and fixed in position, applying pressure to the sealing gasket block 7 and the sealing gasket 9, and applying force to the tightening ring 6; the sealing gasket block 7 is located on the special-shaped bolt 4, interacts with the special-shaped gasket 8, and applies pressure to the tightening ring 6 to tighten it.

[0039] The sealing gasket 7 includes a stopper 701 and a mounting sleeve 702; a sealing gasket 9 is provided on the side of the stopper 701 away from the second nut 401; an iron sheet 703 is provided at the end of the mounting sleeve 702; a tightening ring 6 is sleeved on the iron sheet 703, and one end of the tightening ring 6 is pressed against the sealing gasket 9; the other end of the tightening ring 6 is pressed against the first nut 5.

[0040] The stopper 701 and the mounting sleeve 702 are an integral structure; the stopper 701 extends outward along the edge of the mounting sleeve 702; the sealing gasket 9 is sleeved on the mounting sleeve 702 and tightly abuts against the stopper 701; a plurality of iron sheets 703 are provided at the end of the mounting sleeve 702 away from the stopper 701; the mounting sleeve 702 is sleeved on the screw 3; the tensioning ring 6 is sleeved on the mounting sleeve 702, and when the sealing gasket 7 is squeezed, the iron sheet 703 is also squeezed, and the iron sheet 703 expands, driving the tensioning ring 6 to tighten;

[0041] The sealing gasket 9 is combined with the sealing gasket block 7 to assist the sealing gasket block 7 and play a sealing role, so that the tightening ring 6 can achieve a better tightening effect; the two ends of the tightening ring 6 are tightened when squeezed by the sealing gasket 9 and the first nut 5 respectively, blocking the air vent of the gearbox.

[0042] The special-shaped bolt 4 is provided with an external thread 402 ; the special-shaped gasket 8 and the sealing gasket block 7 are both connected to the external thread 402 .

[0043] The special-shaped gasket 8, the sealing gasket block 7 and the sealing gasket 9 can be adjusted in the axial direction on the special-shaped bolt 4 through the external thread 402; the expansion ring 6 can be fully squeezed and the installation and disassembly operations can be facilitated.

[0044] A plurality of iron sheets 703 extend from the end of the sealing gasket 7, and each iron sheet 703 is separated from each other, and the iron sheet 703 is pressed against the first nut 5; when the sealing gasket 7 is squeezed, one end of the iron sheet 703 is squeezed by the sealing gasket 7, and the other end is squeezed by the first nut 5 and extends along the first nut 5. The iron sheet 703 is squeezed and exploded, driving the tightening ring 6 to tighten.

[0045] The screw rod 3 is provided with a first nut 5; the first nut 5 is a truncated cone structure; the first nut 5 and the screw rod 3 are an integrated structure.

[0046] A threaded hole 102 is provided at the end of the pin shaft 1 away from the pin 101 ; a stud 301 is provided at one end of the screw rod 3 ; and the stud 301 is connected to the threaded hole 102 .

[0047] A stud 301 is provided at one end of the screw rod 3; the stud 301 is provided with an external thread, which can be threadedly connected to the threaded hole 102; one end of the screw rod 3 is combined with the threaded hole 102 of the pin shaft 1 to fix the length, and the other end is pressed against the first nut 5 to fix the position, so that the tightening ring 6 can be squeezed and tightened.

[0048] The specific workflow of this utility model is as follows:

[0049] Rotate the handle 2 90 degrees, and the handle 2 pulls the pin 1 upward, and the extension section 203 presses against the second nut 401 of the special-shaped bolt 4; at this time, the iron sheet 703 at one end of the sealing gasket 7 interacts with the first nut 5, and the iron sheet 703 is squeezed and expanded, driving the tightening ring to tighten, and the sealing gasket 9 and the first nut 5 also act at the same time to squeeze the tightening ring 6, so that the tightening ring 6 is tightened in the vent to achieve sealing operation.

[0050] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A transmission vent blocking device, characterized in that: The invention comprises a pin shaft (1); one end of the pin shaft (1) is connected to a handle (2); the other end of the pin shaft (1) is connected to a screw rod (3); a special-shaped bolt (4) is provided on the pin shaft (1); one end of the screw rod (3) is provided with a first nut (5); a tension ring (6) is provided between the special-shaped bolt (4) and the first nut (5); the tension ring (6) is provided in the vent.

2. A transmission vent blocking device according to claim 1, characterized in that: The pin shaft (1) is provided with a pin (101); the handle (2) includes a mounting groove (201); baffles (202) are provided on both sides of the mounting groove (201); the pin shaft (1) is arranged in the mounting groove (201); and the pin (101) is connected to the baffles (202).

3. A transmission vent blocking device according to claim 2, characterized in that: The special-shaped bolt (4) is provided with a mounting hole; the pin shaft (1) is sleeved in the mounting hole; the special-shaped bolt (4) includes a second nut (401); an extension section (203) is provided at the bottom of the baffle (202); the extension section (203) is tightly pressed against the second nut (401).

4. A transmission vent blocking device according to claim 3, characterized in that: A sealing gasket (7) is connected to the special-shaped bolt (4); the sealing gasket (7) is arranged at the end of the special-shaped bolt (4); a special-shaped gasket (8) is provided between the second nut (401) and the sealing gasket (7); the special-shaped gasket (8) is tightly pressed against the sealing gasket (7).

5. A transmission vent blocking device according to claim 4, characterized in that: The sealing gasket (7) comprises a stopper (701) and a mounting sleeve (702); a sealing gasket (9) is provided on the side of the stopper (701) away from the second nut (401); an iron sheet (703) is provided at the end of the mounting sleeve (702); the tightening ring (6) is sleeved on the iron sheet (703), and one end of the tightening ring (6) is pressed against the sealing gasket (9); the other end of the tightening ring (6) is pressed against the first nut (5).

6. A transmission vent blocking device according to any one of claims 4-5, characterized in that: The special-shaped bolt (4) is provided with an external thread (402); the special-shaped gasket (8) and the sealing gasket block (7) are both connected to the external thread (402).

7. A transmission vent blocking device according to claim 6, characterized in that: The end of the pin shaft (1) away from the pin (101) is provided with a threaded hole (102); one end of the screw rod (3) is provided with a stud (301); the stud (301) is connected to the threaded hole (102).

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