Sealing cover for steering knuckle of heavy truck

Abstract

The utility model relates to the technical field of automobile steering axles, and discloses a sealing cover for a steering knuckle of a heavy truck, which comprises a sealing cover body, an oil filling pipe is welded inside the sealing cover body, a blocking structure for blocking lubricating oil is arranged inside the oil filling pipe, and the blocking structure comprises a blocking column, a rubber plug, a connecting column, a sliding clamping sleeve and a blocking ball. The blocking ball is slidably connected with the oil injection pipe and clamped with the sliding clamping sleeve, the sliding clamping sleeve is elastically connected with the oil injection pipe, the connecting column is fixedly connected with the plugging column and the rubber plug, and the plugging column is clamped with the blocking ball and slidably connected with the oil injection pipe. Due to the rebounding of the sliding clamping sleeve, the blocking ball in the arc-shaped sliding way is blocked by the ball hole and abuts against the protrusion in the middle of the sliding clamping sleeve, the blocking ball can be pushed back to the ball hole again and slides into the annular groove of the I-shaped cylindrical block to form limiting, and the situation that threads are not clear due to long-term use of the threads can be prevented through the design. Meanwhile, the overall practicability of the device is improved, and the device can be used for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile steering axles, and in particular relates to a sealing cover for a heavy truck steering knuckle. Background Art

[0002] The prior art discloses a sealing cover for a military heavy truck steering knuckle (CN202120124703.0), which relates to the field of automobile steering axles, and is designed to solve the problem that it is inconvenient to add lubricating oil to the steering knuckle of the current military heavy truck steering knuckle sealing cover. A threaded hole is provided at the center of the upper surface of the sealing cover body, and a threaded pipe is connected to the inner thread of the threaded hole. An oil storage tank is provided inside the sealing cover body, and a threaded ring is fixedly connected to the lower surface of the sealing cover body, and a sealing gasket is arranged inside the threaded ring. A tube body is fixedly connected to the center of the lower surface of the sealing cover body, and an oil outlet pipe is fixedly connected to one end of the tube body, and a rotating rod is fixedly connected to the outer surface of the threaded pipe, and a circular sheet is fixedly connected to one end of the rotating rod, and a leather plug is fixedly connected to the bottom end of the threaded pipe, and a hole is provided on the upper surface of the sealing cover body, and a fixing bolt is inserted inside the hole.

[0003] After searching, it was found that the lubricating oil adding part of the device used a leather plug and a rotating rod structure, and was fixed or rotated by threads during use. This does not provide a strong seal for the lubricating oil and can easily affect the overall fixing effect, resulting in leakage due to bumps. In addition, long-term use of threaded tubes and threaded rings will cause unclear threads, which makes the device unsuitable for long-term use and affects its overall practicality.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A sealing cover for a heavy truck steering knuckle comprises a sealing cover body, an oil filling pipe is welded inside the sealing cover body, a blocking structure for blocking lubricating oil is arranged inside the oil filling pipe, the blocking structure comprises a plug post, a rubber plug, a connecting post, a sliding sleeve and a blocking ball, the blocking ball is slidably connected to the oil filling pipe and clamped to the sliding sleeve, the sliding sleeve is elastically connected to the oil filling pipe, the connecting post is fixedly connected to the plug post and the rubber plug, the plug post clamps the blocking ball and is slidably connected to the oil filling pipe.

[0007] As a preferred embodiment of the utility model, four circular holes are opened inside the sealing cover body, and a conical oil storage tank for storing excess lubricating oil is opened at the circular part, the sealing cover body is connected with bolts for fixing through the circular holes, an abutment plate is fixedly connected to the middle curved surface of the oil filling pipe, a spring is fixedly connected to the abutment plate, a plurality of ball holes are opened on the inner wall surface of the oil filling pipe, and a resistance ball is clamped through the ball holes, the ball hole is located above the spring, and its diameter is greater than or equal to the resistance ball, and the resistance ball slides in the ball hole.

[0008] As a preferred embodiment of the utility model, the sliding sleeve is an annular cylinder, and an arc-shaped slideway with a diameter greater than or equal to that of the resistance ball is provided inside the sliding sleeve. The resistance ball slides on the arc-shaped slideway. A protrusion is provided below the arc-shaped slideway. The shape of the protrusion is trapezoidal, and an annular groove with a width greater than that of the abutment plate is provided below the protrusion. The top surface of the inner wall of the annular groove is fixedly connected to the other end of the spring, and the sliding sleeve is elastically connected to the abutment plate through the spring.

[0009] As a preferred embodiment of the utility model, the plug column is a cylindrical structure as a whole, which is divided into two parts. One part is a cylindrical plug with a diameter less than or equal to the inner diameter of the oil filling pipe, and the other part is an I-shaped cylindrical block with an arc-shaped ring groove with a diameter greater than or equal to the stop ball on the curved surface. The bottom of the cylindrical plug is fixedly connected to the connecting column, and the I-shaped cylindrical block slides in the inner cavity of the oil filling pipe and is clamped with the stop ball.

[0010] As a preferred embodiment of the utility model, the rubber plug consists of two parts. The first part is a hemispherical rubber plug with a diameter smaller than the inner diameter of the oil filling tube, and the second part is two cylindrical rubber plugs with a diameter equal to the inner diameter of the oil filling tube. The two cylindrical rubber plugs form an I-shaped plug to block the inside of the oil filling tube.

[0011] As a preferred embodiment of the utility model, a top plate is fixedly connected to the top of the blocking column, a handle is fixedly connected to the top of the top plate, and a fixing component for fixing the blocking structure is provided at the bottom, and the fixing component includes a rotating block, a slot block and a rotating column, the rotating block is fixedly connected to the rotating column and is engaged with the slot block, the slot block is fixedly connected to the sliding sleeve, and the rotating column is rotatably connected to the top plate.

[0012] As a preferred embodiment of the present invention, the bottom of the sliding sleeve is symmetrically connected to different slot blocks, the bottom of the top plate is symmetrically provided with different rotating holes, both of the rotating holes are provided with bearings for rotation, the top plate is rotatably connected to the rotating column through the bearings, a through hole is provided inside the slot block, the through hole is circular, and two square protrusions are symmetrically provided in the middle of the circle, the shape of the rotating block is the same as that of the through hole, the diameter of the rotating column is smaller than the spacing between the two square protrusions inside the through hole, and the rotating column slides in the through hole and abuts against the limiting slot block through the rotating block.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Due to the rebound of the sliding sleeve, the blocking ball in the arc slideway is blocked by the ball hole and pushed back into the ball hole by the protrusion in the middle of the sliding sleeve. It slides into the ring groove of the I-shaped cylindrical block to form a limit. This design can prevent the unclear threads caused by long-term use of the threads, and at the same time improves the overall practicality of the device, allowing it to be used for a long time.

[0015] 2. The oil filling pipe for adding lubricating oil to the sealing cover is sealed by using the cooperation of the plugging structure and the fixing assembly. This not only reduces the problem of weak sealing caused by unclear thread rotation, but also enhances the overall sealing effect. At the same time, the cooperation of the oil storage tank and the rubber plug also avoids possible leakage caused by vehicle bumps.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is a bottom view schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal partial structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the plug tube structure of the utility model;

[0022] Figure 5 It is a cross-sectional schematic diagram of the utility model.

[0023] In the figure: 10, sealing cover body; 11, bolt; 12, spring; 13, oil filling pipe; 14, abutment plate; 15, abutment column; 16, rubber plug; 17, connecting column; 18, rotating block; 19, slot block; 20, rotating column; 21, top plate; 22, sliding sleeve; 23, oil storage tank; 24, blocking ball. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0025] A sealing cover for a heavy truck steering knuckle, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a sealing cover for a heavy truck steering knuckle comprises a sealing cover body 10, an oil filling pipe 13 is welded inside the sealing cover body 10, a plugging structure for blocking lubricating oil is arranged inside the oil filling pipe 13, the plugging structure comprises a plug post 15, a rubber plug 16, a connecting post 17, a sliding sleeve 22 and a blocking ball 24, the blocking ball 24 is slidably connected to the oil filling pipe 13 and clamped with the sliding sleeve 22, the sliding sleeve 22 is elastically connected to the oil filling pipe 13, the connecting post 17 is fixedly connected to the plug post 15 and the rubber plug 16, the plug post 15 is clamped with the blocking ball 24 and slidably connected to the oil filling pipe 13; Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, four circular holes are provided inside the sealing cover body 10, and a conical oil storage tank 23 for storing excess lubricating oil is provided at the circular part. The sealing cover body 10 is connected with bolts 11 for fixing through the circular holes. An abutment plate 14 is fixedly connected to the middle curved surface of the oil filling pipe 13, and a spring 12 is fixedly connected to the abutment plate 14. A plurality of ball holes are provided on the inner wall surface of the oil filling pipe 13, and a blocking ball 24 is clamped through the ball holes. The ball hole is located above the spring 12, and its diameter is greater than or equal to the blocking ball 24. The blocking ball 24 slides in the ball hole; as shown in FIG. Figure 3 and Figure 5 As shown, the sliding sleeve 22 is an annular cylinder, and a circle of arc-shaped slideway with a diameter greater than or equal to the ball blocking 24 is provided inside the sliding sleeve 22. The ball blocking 24 slides on the arc-shaped slideway. A protrusion is provided below the arc-shaped slideway. The shape of the protrusion is trapezoidal. An annular groove with a width greater than the abutment plate 14 is provided below the protrusion. The top surface of the inner wall of the annular groove is fixedly connected to the other end of the spring 12. The sliding sleeve 22 is elastically connected to the abutment plate 14 through the spring 12; as shown in FIG. Figure 3 , Figure 4 and Figure 5As shown, the stopper column 15 is a cylindrical structure as a whole, which is divided into two parts, one part is a cylindrical plug with a diameter less than or equal to the inside of the oil filling pipe 13, and the other part is an I-shaped cylindrical block with an arcuate annular groove with a diameter greater than or equal to the stop ball 24 on the curved surface. The bottom of the cylindrical plug is fixedly connected to the connecting column 17, and the I-shaped cylindrical block slides in the inner cavity of the oil filling pipe 13 and is clamped with the stop ball 24; Figure 2 and Figure 3 As shown, the rubber plug 16 consists of two parts. The first part is a hemispherical rubber plug with a diameter smaller than the inside of the oil filling tube 13, and the second part is two cylindrical rubber plugs with a diameter equal to the inner diameter of the oil filling tube 13. The two cylindrical rubber plugs form an I-shaped plug to block the inside of the oil filling tube 13.

[0026] The working principle is as follows: the sealing cover body 10 and the steering knuckle are fixed by bolts 11, and then the sliding sleeve 22 is pressed to make the protrusion inside slide on the outer wall surface of the oil filling pipe 13, and the shape of the top of the arc slide is driven to push the blocking ball 24 into the ball hole by squeezing the spring 12, and then the plug column 15 is pressed. There is a ring baffle with a diameter equal to the cylindrical plug on the inner wall surface of the oil filling pipe 13, which is used to limit the plug column 15. When the cylindrical plug of the plug column 15 slides in the ring baffle and passes through it, the bottom of the I-shaped cylindrical block will block the ball 2 2 The top returns to the arc-shaped slideway of the sliding sleeve 22. When the I-shaped cylindrical block is stuck on the top of the annular baffle, a trapezoidal annular groove is formed between its interior and the ball hole. At this time, the sliding sleeve 22 is released. Due to the rebound of the sliding sleeve 22, the blocking ball in the arc-shaped slideway is blocked by the ball hole and pushed back to the ball hole by the protrusion in the middle of the sliding sleeve 22. After sliding, it enters the annular groove of the I-shaped cylindrical block to form a limit. This design can prevent the unclear thread caused by long-term use of the thread, and at the same time improves the overall practicality of the device, so that it can be used for a long time.

[0027] like Figure 4 and Figure 5 As shown, a top plate 21 is fixedly connected to the top of the blocking column 15, a handle is fixedly connected to the top of the top plate 21, and a fixing assembly for fixing the blocking structure is arranged below, the fixing assembly includes a rotating card block 18, a card slot block 19 and a rotating column 20, the rotating card block 18 is fixedly connected to the rotating column 20 and is engaged with the card slot block 19, the card slot block 19 is fixedly connected to the sliding card sleeve 22, and the rotating column 20 is rotatably connected to the top plate 21; Figure 4 and Figure 5As shown, the bottom of the sliding sleeve 22 is symmetrically connected to different slot blocks 19, and different rotating holes are symmetrically opened at the bottom of the top plate 21. Bearings for rotation are arranged in the two rotating holes. The top plate 21 is rotatably connected to the rotating column 20 through the bearings. A through hole is opened inside the slot block 19. The through hole is circular, and two square protrusions are symmetrically arranged in the middle of the circle. The shape of the rotating block 18 is the same as that of the through hole. The diameter of the rotating column 20 is smaller than the distance between the two square protrusions inside the through hole. The rotating column 20 slides in the through hole and abuts against the limiting slot block 19 through the rotating block 18.

[0028] The working principle is as follows. When the blocking structure is blocked successfully, the top plate 21 can be rotated by rotating the handle, or the sliding sleeve 22 can be pressed down, so that the rotating column 20 can carry the rotating block 18 through the card slot block 19, and then, by rotating the rotating column 20, the rotating block 18 and the through hole shape in the card slot block are perpendicular, and then the sliding sleeve 22 is loosened, and the blocking structure is fixed by the shape of the rotating block 18; in addition, after filling the lubricating oil, in order to avoid waste, the top plate 21 can be rotated and pulled by the handle to drive the blocking structure to rotate or rise and fall. At the same time, due to the rubber plug 16 The soft tension of the material will drive the excess oil to rise to the oil storage tank 23 for storage during the pulling process. Since the oil storage tank 23 is designed to be conical, with a low inside and a high outside, the lubricating oil can flow more conveniently and will not accumulate due to too little oil. In summary, the oil filling pipe 13 for adding lubricating oil to the sealing cover is sealed by the cooperation of the plugging structure and the fixing component. This not only reduces the problem of weak sealing caused by unclear thread rotation, but also enhances the overall sealing effect. At the same time, the cooperation between the oil storage tank 23 and the rubber plug 16 also avoids leakage that may occur due to vehicle bumps.

[0029] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A sealing cover for a heavy truck steering knuckle, comprising a sealing cover body (10), characterized in that: An oil filling pipe (13) is welded inside the sealing cover body (10), and a blocking structure for blocking lubricating oil is arranged inside the oil filling pipe (13). The blocking structure comprises a plug post (15), a rubber plug (16), a connecting post (17), a sliding sleeve (22) and a blocking ball (24). The blocking ball (24) is slidably connected to the oil filling pipe (13) and is clamped to the sliding sleeve (22). The sliding sleeve (22) is elastically connected to the oil filling pipe (13). The connecting post (17) is fixedly connected to the plug post (15) and the rubber plug (16). The plug post (15) is clamped to the blocking ball (24) and is slidably connected to the oil filling pipe (13).

2. A sealing cover for a heavy truck steering knuckle according to claim 1, characterized in that: The sealing cover body (10) is provided with four circular holes inside, and a conical oil storage tank (23) for storing excess lubricating oil is provided in the circular part. The sealing cover body (10) is connected to a bolt (11) for fixing through the circular holes. A contact plate (14) is fixedly connected to the middle curved surface of the oil filling pipe (13), and a spring (12) is fixedly connected to the contact plate (14). A plurality of ball holes are provided on the inner wall surface of the oil filling pipe (13), and a blocking ball (24) is clamped through the ball holes. The ball hole is located above the spring (12), and its diameter is greater than or equal to that of the blocking ball (24). The blocking ball (24) slides in the ball hole.

3. The sealing cover for a heavy truck steering knuckle according to claim 1, characterized in that: The sliding sleeve (22) is an annular cylinder, and an arc-shaped slideway with a diameter greater than or equal to that of the blocking ball (24) is provided inside the sliding sleeve. The blocking ball (24) slides on the arc-shaped slideway. A protrusion is provided below the arc-shaped slideway. The protrusion is in a trapezoidal shape. An annular groove with a width greater than that of the abutment plate (14) is provided below the protrusion. The top surface of the inner wall of the annular groove is fixedly connected to the other end of the spring (12). The sliding sleeve (22) is elastically connected to the abutment plate (14) through the spring (12).

4. The sealing cover for a heavy truck steering knuckle according to claim 1, characterized in that: The stopper column (15) is a cylindrical structure as a whole and is divided into two parts, one part is a cylindrical plug with a diameter less than or equal to the inside of the oil filling pipe (13), and the other part is an I-shaped cylindrical block with an arcuate annular groove with a diameter greater than or equal to the stop ball (24) on the curved surface, the bottom of the cylindrical plug is fixedly connected to the connecting column (17), and the I-shaped cylindrical block slides in the inner cavity of the oil filling pipe (13) and is clamped with the stop ball (24).

5. The sealing cover for a heavy truck steering knuckle according to claim 1, characterized in that: The rubber plug (16) is composed of two parts. The first part is a hemispherical rubber plug with a diameter smaller than the inside of the oil injection pipe (13). The second part is two cylindrical rubber plugs with a diameter equal to the inside diameter of the oil injection pipe (13). The two cylindrical rubber plugs form an I-shaped plug to block the inside of the oil injection pipe (13).

6. The sealing cover for a heavy truck steering knuckle according to claim 1, characterized in that: A top plate (21) is fixedly connected to the top of the blocking column (15), a handle is fixedly connected to the top of the top plate (21), and a fixing assembly for fixing the blocking structure is arranged below the top plate. The fixing assembly comprises a rotating card block (18), a card slot block (19), and a rotating column (20). The rotating card block (18) is fixedly connected to the rotating column (20) and is engaged with the card slot block (19). The card slot block (19) is fixedly connected to a sliding card sleeve (22), and the rotating column (20) is rotatably connected to the top plate (21).

7. The sealing cover for a heavy truck steering knuckle according to claim 6, characterized in that: The bottom of the sliding sleeve (22) is symmetrically connected to different slot blocks (19); the bottom of the top plate (21) is symmetrically provided with different rotating holes; bearings for rotation are arranged in both rotating holes; the top plate (21) is rotatably connected to the rotating column (20) through the bearings; a through hole is arranged inside the slot block (19); the through hole is circular; and two square protrusions are symmetrically arranged in the middle of the circle; the shape of the rotating block (18) is the same as that of the through hole; the diameter of the rotating column (20) is smaller than the distance between the two square protrusions inside the through hole; the rotating column (20) slides in the through hole and abuts against the limit slot block (19) through the rotating block (18).

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