Sealing structure for preventing end face of power takeoff from leaking oil

Abstract

The utility model discloses a sealing structure for preventing oil leakage of an end face of a power takeoff, which relates to the technical field of power takeoff in an automatic transmission and comprises the power takeoff and a sealing gland. A sealing gland is arranged above the power takeoff, an inner cavity is formed in the power takeoff, the upper end of the power takeoff is fixedly connected with the lower end of a connecting plate, a sealing gasket is arranged above the connecting plate, a fixing plate is arranged between the connecting plate and the inner wall of the sealing gasket, the lower end of the sealing gland is fixedly connected with a rectangular mounting block, and clamping blocks are evenly arranged on the rectangular mounting block. Rectangular grooves are evenly formed in the rectangular mounting block, clamping blocks are arranged in the rectangular grooves in a sliding mode, a plane type connecting structure is changed into an embedded type connecting structure, glue is evenly smeared at the outer end of the rectangular mounting block, the uniformity in an embedded face is guaranteed, and the purpose of preventing oil liquid from leaking from the connecting end face is achieved. The influence of human factors is reduced, and the sealing performance is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a power take-off in an automatic transmission, in particular to a sealing structure for preventing oil leakage from an end face of a power take-off. Background Art

[0002] With the rapid development of my country's economy, demand for construction machinery required for infrastructure construction and resource extraction is increasing. As an integral component of automatic transmissions, power take-offs (PTOs) quickly and conveniently transfer a portion of the power transferred from the engine to the automatic transmission to the required equipment, thus presenting a promising market opportunity. A PTO, also known as a power take-off, consists of two sets of speed gears. Since the PTO is mounted on an automatic transmission, the required power can be directly transferred to the PTO output via the automatic transmission pump.

[0003] In the existing technology, the sealing effect of the end face of the power take-off and the automatic transmission assembly is not good enough. After long-term use, the sealing structure will fail and oil leakage will occur, and the sealing structure needs to be replaced. However, due to objective factors such as limited space and the inability of equipment to detect, maintenance personnel cannot perform maintenance directly on the entire vehicle. They need to disassemble the automatic transmission assembly from the entire vehicle, which consumes a lot of manpower and working hours, thus affecting the use of the product and reducing production efficiency. To this end, we propose a sealing structure that prevents oil leakage from the end face of the power take-off. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a sealing structure to prevent oil leakage from the end face of the power take-off. It not only prevents oil leakage from the connection end face, effectively improving the sealing performance, but also forms an oil film at the connection through the sealing lubricating oil, which plays a sealing role on the connection, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a sealing structure for preventing oil leakage from the end face of a power take-off, comprising a power take-off and a sealing gland;

[0006] A sealing gland is provided above the power take-off, an inner cavity is provided inside the power take-off, the upper end of the power take-off is fixedly connected to the lower end of the connecting plate, a sealing gasket is provided above the connecting plate, a fixing plate is provided between the connecting plate and the inner wall of the sealing gasket, the lower end of the sealing gland is fixedly connected to the rectangular mounting block, and clamping blocks are evenly provided on the rectangular mounting block;

[0007] Rectangular grooves are evenly opened on the rectangular mounting block, and a card block is slidingly provided in the rectangular groove. A telescopic rod is fixedly installed between the rectangular groove and the card block. Guide rods are provided on both sides of the telescopic rod. One end of the guide rod is fixedly connected to the rectangular groove, and the other end of the guide rod is fixedly connected to the card block. A spring is sleeved on the telescopic rod, and a sealing convex plate is provided on the outer side of the rectangular mounting block. The sealing convex plate is fixedly connected to the lower end of the sealing cover, and a rubber pad is fixedly installed on the outer end of the sealing convex plate.

[0008] Place the sealing cover into the inner cavity of the power take-off, and the card block is squeezed, and then contracts inward with the telescopic rod and the spring. After the rectangular mounting block is completely entered into the inner cavity, the spring then extends the card block outward along the direction of the guide rod. Insert the card block into the card slot, and change the planar connection structure to an embedded connection structure. Glue is evenly applied to the outer end of the rectangular mounting block to ensure uniformity in the embedded surface, thereby preventing oil leakage from the connection end surface, reducing the influence of human factors, and effectively improving the sealing performance.

[0009] Furthermore, the lower end of the fixed plate is fixedly connected to the upper end of the connecting plate, and a sealing oil chamber is formed between the outer wall of the fixed plate and the inner wall of the connecting plate and the sealing gasket. The sealing convex plate and the rubber gasket are plugged into the sealing oil chamber, and the height of the sealing convex plate and the rubber gasket is less than the depth of the sealing oil chamber. The sealing oil chamber is filled with sealing lubricating oil.

[0010] The sealing convex plate is inserted into the sealing oil cavity, the sealing oil cavity is filled with sealing lubricating oil, and the sealing gland is filled with sealing lubricating oil. The sealing lubricating oil can form an oil film at the joint, which plays a sealing role for the joint. The rubber pad can also further seal the sealing convex plate.

[0011] Furthermore, the inner cavity of the power take-off is evenly provided with card slots, and the card blocks are engaged with the card slots.

[0012] The clamping block is clamped into the clamping slot to facilitate the connection between the sealing cover and the power take-off.

[0013] Furthermore, the lower end of the sealing gasket is fixedly connected to the upper end of the connecting plate, threaded holes are evenly opened at the front and rear ends of the connecting plate and the sealing gasket, and positioning pin holes are opened at the left and right ends of the connecting plate and the sealing gasket.

[0014] By setting the sealing gasket, the power take-off can be doubly sealed, so that the end face of the power take-off is always in a sealed state, reducing the occurrence of oil leakage and improving the sealing performance of the end face of the power take-off.

[0015] Furthermore, threaded holes are evenly formed at the front and rear ends of the sealing gland, and the fastening bolts are threadedly connected to the threaded holes on the sealing gland, the connecting plate and the sealing gasket.

[0016] By improving the connection position of the fastening bolts, the assembly space above the bolts is made larger, which makes fastening and assembly easier, reduces the possibility of oil leakage from the bolts, and can meet the pre-tightening force requirements of the power take-off.

[0017] Furthermore, positioning pins are fixedly installed on both left and right ends of the sealing gland, and the positioning pins are plugged into the positioning pin holes on the connecting plate and the sealing gasket.

[0018] The connection between the sealing cover and the power take-off can be positioned by inserting the positioning pin into the positioning pin hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the sealing structure for preventing oil leakage from the end face of the power take-off has the following advantages:

[0020] 1. The flat connection structure is changed to an embedded connection structure, and glue is evenly applied to the outer end of the rectangular mounting block to ensure uniformity in the embedded surface, thereby preventing oil leakage from the connection end surface, reducing the influence of human factors, and effectively improving the sealing performance.

[0021] 2. The sealing convex plate is inserted into the sealing oil cavity, and the sealing oil cavity is filled with sealing lubricating oil. The sealing gland is filled with sealing lubricating oil. The sealing lubricating oil can form an oil film at the joint, which plays a sealing role on the joint. The rubber pad can also further seal the sealing convex plate.

[0022] 3. By setting the sealing gasket, the power take-off can be double-sealed, so that the end face of the power take-off is always in a sealed state, reducing the occurrence of oil leakage and improving the sealing performance of the end face of the power take-off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the utility model.

[0024] Figure 2 This is a top view of the sealing gland structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the power take-off of the utility model.

[0026] Figure 4 For this utility model Figure 2 A magnified schematic diagram of the structure in the middle.

[0027] In the figure: 1 power take-off, 2 connecting plate, 3 sealing cover, 4 sealing gasket, 5 locating pin, 6 rectangular mounting block, 7 sealing convex plate, 8 rubber gasket, 9 fastening bolt, 10 threaded hole, 11 locating pin hole, 12 inner cavity, 13 sealing oil cavity, 14 slot, 15 fixing plate, 16 spring, 17 telescopic rod, 18 block, 19 guide rod, 20 rectangular slot. DETAILED DESCRIPTION

[0028] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-4 , this embodiment provides a technical solution: a sealing structure for preventing oil leakage from the end face of a power take-off, comprising a power take-off 1 and a sealing gland 3;

[0030] A sealing gland 3 is provided above the power take-off 1. An inner cavity 12 is provided inside the power take-off 1. The upper end of the power take-off 1 is fixedly connected to the lower end of the connecting plate 2. A sealing gasket 4 is provided above the connecting plate 2. A fixing plate 15 is provided between the inner wall of the connecting plate 2 and the sealing gasket 4. The lower end of the sealing gland 3 is fixedly connected to the rectangular mounting block 6. The rectangular mounting block 6 is evenly provided with clamping blocks 18.

[0031] Rectangular grooves 20 are evenly opened on the rectangular mounting block 6, and a card block 18 is slidably provided in the rectangular groove 20. A telescopic rod 17 is fixedly installed between the rectangular groove 20 and the card block 18. Guide rods 19 are provided on both sides of the telescopic rod 17. One end of the guide rod 19 is fixedly connected to the rectangular groove 20, and the other end of the guide rod 19 is fixedly connected to the card block 18. A spring 16 is sleeved on the telescopic rod 17. A sealing convex plate 7 is provided on the outer side of the rectangular mounting block 6. The sealing convex plate 7 is fixedly connected to the lower end of the sealing cover 3, and a rubber pad 8 is fixedly installed on the outer end of the sealing convex plate 7.

[0032] The sealing gland 3 is placed into the inner cavity 12 of the power take-off 1. The clamping block 18 is squeezed, and then the telescopic rod 17 and the spring 16 are retracted inward. After the rectangular mounting block 6 is completely entered into the inner cavity 12, the spring 16 then extends the clamping block 18 outward along the direction of the guide rod 19. The clamping block 18 is inserted into the card slot 14, and the planar connection structure is changed to an embedded connection structure. Glue is evenly applied to the outer end of the rectangular mounting block 6 to ensure uniformity in the embedded surface, thereby preventing oil leakage from the connection end surface, reducing the influence of human factors, and effectively improving the sealing performance.

[0033] The lower end of the fixed plate 15 is fixedly connected to the upper end of the connecting plate 2. A sealing oil chamber 13 is formed between the outer wall of the fixed plate 15 and the inner walls of the connecting plate 2 and the sealing gasket 4. The sealing convex plate 7 and the rubber gasket 8 are plugged into the sealing oil chamber 13. The height of the sealing convex plate 7 and the rubber gasket 8 is less than the depth of the sealing oil chamber 13. The sealing oil chamber 13 is filled with sealing lubricating oil.

[0034] The sealing convex plate 7 is inserted into the sealing oil chamber 13, and the sealing oil chamber 13 is filled with sealing lubricating oil. The sealing gland 3 is filled with sealing lubricating oil. The sealing lubricating oil can form an oil film at the connection, which plays a sealing role on the connection. The rubber pad 8 can also further seal the sealing convex plate 7.

[0035] The inner cavity 12 of the power take-off 1 is evenly provided with clamping grooves 14 , and the clamping blocks 18 are clamped with the clamping grooves 14 .

[0036] The clamping block 18 is clamped in the clamping groove 14 to facilitate the connection between the sealing cover 3 and the power take-off 1 .

[0037] The lower end of the sealing gasket 4 is fixedly connected to the upper end of the connecting plate 2 , threaded holes 10 are evenly opened at the front and rear ends of the connecting plate 2 and the sealing gasket 4 , and positioning pin holes 11 are opened at the left and right ends of the connecting plate 2 and the sealing gasket 4 .

[0038] By providing the sealing gasket 4, the power take-off 1 can be doubly sealed, so that the end face of the power take-off 1 is always in a sealed state, reducing the occurrence of oil leakage and improving the sealing performance of the end face of the power take-off 1.

[0039] Threaded holes 10 are also evenly formed at the front and rear ends of the sealing gland 3 , and the fastening bolts 9 are threadedly connected to the threaded holes 10 on the sealing gland 3 , the connecting plate 2 and the sealing gasket 4 .

[0040] By improving the connection position of the fastening bolt 9, the assembly space above the bolt is made larger, which makes fastening and assembly easier, reduces the possibility of oil leakage from the bolt, and can meet the pre-tightening force requirements of the power take-off.

[0041] Positioning pins 5 are fixedly mounted on both the left and right ends of the sealing gland 3 , and the positioning pins 5 are plugged into the positioning pin holes 11 on the connecting plate 2 and the sealing gasket 4 .

[0042] By inserting the positioning pin 5 into the positioning pin hole 11 , the connection between the sealing cover 3 and the power take-off 1 can be positioned.

[0043] The working principle of the sealing structure for preventing oil leakage from the end face of the power take-off provided by the present invention is as follows: the sealing gland 3 is placed in the inner cavity 12 of the power take-off 1, the clamping block 18 is squeezed, and then the telescopic rod 17 and the spring 16 are retracted inwardly. After the rectangular mounting block 6 is completely entered into the inner cavity 12, the spring 16 then extends the clamping block 18 outward along the direction of the guide rod 19, and the clamping block 18 is inserted into the card slot 14, and the planar connection structure is changed to an embedded connection structure. Glue is evenly applied to the outer end of the rectangular mounting block 6 to ensure uniformity in the embedded surface, thereby preventing oil from leaking from the connection end face, reducing the influence of human factors, and effectively improving the sealing performance. The sealing convex plate 7 is inserted into the sealing oil chamber 13, and the sealing oil chamber 13 is filled with sealing lubricating oil. The sealing gland 3 is inserted into the inner cavity 12 of the power take-off 1, and the spring 16 then extends outward along the direction of the guide rod 19. The clamping block 18 is inserted into the card slot 14, and the planar connection structure is changed to an embedded connection structure. Glue is evenly applied to the outer end of the rectangular mounting block 6 to ensure uniformity in the embedded surface, thereby preventing oil from leaking from the connection end face, reducing the influence of human factors, and effectively improving the sealing performance. The sealing convex plate 7 is inserted into the sealing oil chamber 13, and the sealing oil chamber 13 is filled with sealing lubricating oil. The inside of the cover 3 is filled with sealing lubricant, which can form an oil film at the connection point, thereby sealing the connection point. The rubber gasket 8 can also further seal the sealing convex plate 7. The clamping block 18 is engaged with the clamping groove 14 to facilitate the connection between the sealing cover 3 and the power take-off 1. By setting the sealing gasket 4, the power take-off 1 can be doubly sealed, so that the end face of the power take-off 1 is always in a sealed state, reducing the occurrence of oil leakage and improving the sealing of the end face of the power take-off 1. By improving the connection position of the fastening bolt 9, the assembly space above the bolt is larger, which is more convenient for fastening and assembly, and reduces the possibility of oil leakage from the bolt, which can achieve the pre-tightening force requirements of the power take-off. By plugging the locating pin 5 into the locating pin hole 11, the connection between the sealing cover 3 and the power take-off 1 can be positioned.

[0044] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sealing structure for preventing oil leakage from the end face of a power take-off, characterized by: It comprises a power take-off (1) and a sealing gland (3); A sealing gland (3) is provided above the power take-off (1), an inner cavity (12) is provided inside the power take-off (1), the upper end of the power take-off (1) is fixedly connected to the lower end of the connecting plate (2), a sealing gasket (4) is provided above the connecting plate (2), a fixing plate (15) is provided between the inner wall of the connecting plate (2) and the sealing gasket (4), the lower end of the sealing gland (3) is fixedly connected to the rectangular mounting block (6), and the rectangular mounting block (6) is evenly provided with clamping blocks (18); Rectangular grooves (20) are evenly provided on the rectangular mounting block (6), a clamping block (18) is slidably provided in the rectangular groove (20), a telescopic rod (17) is fixedly installed between the rectangular groove (20) and the clamping block (18), guide rods (19) are provided on both sides of the telescopic rod (17), one end of the guide rod (19) is fixedly connected to the rectangular groove (20), and the other end of the guide rod (19) is fixedly connected to the clamping block (18), a spring (16) is sleeved on the telescopic rod (17), a sealing convex plate (7) is provided on the outer side of the rectangular mounting block (6), the sealing convex plate (7) is fixedly connected to the lower end of the sealing gland (3), and a rubber pad (8) is fixedly installed on the outer end of the sealing convex plate (7).

2. A sealing structure for preventing oil leakage from the end face of a power take-off according to claim 1, characterized in that: The lower end of the fixed plate (15) is fixedly connected to the upper end of the connecting plate (2); a sealing oil chamber (13) is formed between the outer wall of the fixed plate (15) and the inner walls of the connecting plate (2) and the sealing gasket (4); the sealing convex plate (7) and the rubber gasket (8) are plugged into the sealing oil chamber (13); the height of the sealing convex plate (7) and the rubber gasket (8) is less than the depth of the sealing oil chamber (13); and the sealing oil chamber (13) is filled with sealing lubricating oil.

3. The sealing structure for preventing oil leakage from the end face of a power take-off according to claim 1, characterized in that: The inner cavity (12) of the power take-off (1) is evenly provided with card slots (14), and the card blocks (18) are card-engaged with the card slots (14).

4. The sealing structure for preventing oil leakage from the end face of a power take-off according to claim 1, characterized in that: The lower end of the sealing gasket (4) is fixedly connected to the upper end of the connecting plate (2); threaded holes (10) are evenly provided at the front and rear ends of the connecting plate (2) and the sealing gasket (4); and positioning pin holes (11) are provided at the left and right ends of the connecting plate (2) and the sealing gasket (4).

5. The sealing structure for preventing oil leakage from the end face of a power take-off according to claim 1, characterized in that: The front and rear ends of the sealing gland (3) are also evenly provided with threaded holes (10), and the fastening bolts (9) are threadedly connected to the threaded holes (10) on the sealing gland (3), the connecting plate (2) and the sealing gasket (4).

6. The sealing structure for preventing oil leakage from the end face of a power take-off according to claim 1, characterized in that: Positioning pins (5) are fixedly mounted on both left and right ends of the sealing gland (3), and the positioning pins (5) are plugged into positioning pin holes (11) on the connecting plate (2) and the sealing gasket (4).

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