Damage-proof driving shaft with high sealing performance

Abstract

The utility model discloses a high-sealing-performance anti-damage driving shaft, and relates to the technical field of elastic couplings, namely devices allowing movement between connecting parts during transmission. According to the damage-prevention driving shaft with the high sealing performance, a sealing protection assembly is arranged on the driving shaft and comprises a first sealing protection sleeve, a second sealing protection sleeve, a threaded groove, a rotating disc, a rotating button, a threaded column, a first groove, a piston rod piece, a first spring, a ventilation pipe, a sealing groove and a sealing air bag. By arranging a rotating button in the sealing assembly, when a first sealing protection sleeve and a second sealing protection sleeve are detached, the rotating button is rotated, gas in a sealing air bag enters the second sealing protection sleeve, and after the sealing air bag does not make close contact with a sealing groove, the first sealing protection sleeve and the second sealing protection sleeve are detached; the first sealing protective sleeve and the second sealing protective sleeve are convenient to disassemble, the problem that the sealing air bag is abraded and damaged due to the fact that the sealing groove and the sealing air bag which are tightly attached are directly pulled can be avoided, and the service life of the sealing air bag is prolonged.

Description

Technical Field

[0001] The utility model relates to an elastic coupling, namely the technical field of a device with connecting parts that allow movement during transmission, in particular to a high-sealing anti-damage driving shaft. Background Art

[0002] The drive shaft is a key component in automobiles and many other mechanical equipment. Its main function is to transmit the power of the engine to the wheels or working equipment to generate propulsion or realize the operation of the working equipment. In order to extend the service life of the drive shaft, a protective sleeve is often installed on the drive shaft to protect the drive shaft, so as to improve the sealing of the drive shaft and protect the drive shaft from damage. The Chinese utility model patent, authorization announcement number "CN218510038U", discloses a detachable drive shaft protective sleeve, which belongs to the field of drive shaft technology, including an inner protective sleeve, the back of the inner protective sleeve is provided with an inner ball joint, the side of the inner protective sleeve is provided with two limiting holes, the back of the inner protective sleeve is provided with two placement grooves, and the back of the inner protective sleeve is provided with a sealing airbag.

[0003] The above technical solution arranges an inner protective sleeve, an inner ball joint, a limiting hole, a limiting rod, a piston cylinder and a sealing air bag. With the cooperation of the limiting rod and the limiting hole, the inner protective sleeve and the inner ball joint can be installed and disassembled. At the same time, the inflated sealing air bag is in close contact with the sealing groove, which further prevents external moisture from entering the inner protective sleeve from the connection and damaging the drive shaft spline, thereby ensuring the service life of the drive shaft spline and improving its sealing effect. The following problems occur during use.

[0004] When disassembling, external tools are needed to push the limit rods at the upper and lower ends into the interior of the fixed block, that is, both hands need to hold the tools for squeezing to ensure that the inner protective cover and the inner ball joint are completely separated, which is very troublesome.

[0005] Since the sealing airbag is in close contact with the sealing groove after expansion, the friction between the sealing airbag and the sealing groove is relatively large when pulling at the beginning, making it more troublesome to disassemble. Utility Model Content

[0006] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a highly sealed anti-damage drive shaft, which can solve the problem that when disassembling, external tools are needed to push the limit rods at the upper and lower ends to the inside of the fixed block, that is, both hands need to hold the tools for squeezing to ensure the complete separation of the inner protective cover and the inner ball joint, which is very troublesome; because the sealing airbag is in close contact with the sealing groove after expansion, the friction between the sealing airbag and the sealing groove is relatively large when pulling at the beginning, making disassembly more troublesome.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly sealed anti-damage drive shaft, comprising two drive shafts;

[0008] The sealing protection assembly is arranged on the driving shaft, and the sealing assembly comprises a sealing protection sleeve 1, a sealing protection sleeve 2, a threaded groove, a rotating disk, a rotating knob, a threaded column, a groove 1, a piston rod, a spring 1, a vent pipe, a sealing groove and a sealing airbag, wherein one sealing protection sleeve is arranged on the driving shaft, the sealing protection sleeve 2 is arranged on the other driving shaft, the sealing groove is arranged on the sealing protection sleeve 1, and the sealing airbag is arranged on the sealing protection sleeve 2;

[0009] The limit assembly is arranged on the sealing protective sleeve 1 and the sealing protective sleeve 2. The limit assembly includes spring 2, a clamp, a trapezoidal member, a button, spring 3, a clamping slot, groove 2 and a button body. The clamp is welded on the sealing protective sleeve 1, and groove 2 is opened on the sealing protective sleeve 2. There are two limit assemblies, and both limit assemblies are arranged on the sealing protective sleeve 1 and the sealing protective sleeve 2.

[0010] Preferably, the groove one is provided on the sealing protection sleeve two, and the thread groove is provided on the groove one.

[0011] Preferably, the surface of the threaded column is threadedly connected to the inner surface of the threaded groove, the threaded column is adhered to the turntable, and the knob is adhered to the turntable.

[0012] Preferably, the piston rod slides through the second sealing protective sleeve, one end of the first spring is adhered to the piston rod, and the other end of the first spring is adhered to the second sealing protective sleeve.

[0013] Preferably, one end of the ventilation tube is connected to the second sealing protective sleeve, and the other end of the ventilation tube is connected to the sealing airbag.

[0014] Preferably, the two trapezoidal members slide through the corresponding clamps respectively, one end of the two springs 2 are welded to the corresponding trapezoidal members respectively, and the other ends of the two springs 2 are welded to the corresponding clamps respectively.

[0015] Preferably, the two card slots are respectively opened on the corresponding groove 2, the two button bodies slide along the corresponding card slots respectively, and the two buttons slide along the corresponding groove 2 respectively.

[0016] Preferably, one ends of the two springs three are respectively welded to the corresponding buttons, and the other ends of the two springs three are respectively welded to the inside of the corresponding groove two.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The high-sealability anti-damage drive shaft is provided with a knob in the sealing assembly. When it is necessary to remove the sealing protective sleeve 1 and the sealing protective sleeve 2, first, the knob is turned to allow the gas in the sealing airbag to enter the interior of the sealing protective sleeve 2. After the sealing airbag is no longer in close contact with the sealing groove, the sealing protective sleeve 1 and the sealing protective sleeve 2 are removed. This not only facilitates the removal of the sealing protective sleeve 1 and the sealing protective sleeve 2, but also avoids the problem of directly pulling the tightly fitting sealing groove and the sealing airbag, which may cause the sealing airbag to be worn and damaged, thereby improving the service life of the sealing airbag.

[0019] (2) The highly sealed and damage-resistant drive shaft can detach the two trapezoidal parts from the corresponding slots by setting two buttons in the limit assembly. No external tools are required. Only one hand is needed to press the two buttons, and the other hand can hold the sealing protective sleeve 1 and the sealing protective sleeve 2, thereby improving the stability when removing the sealing protective sleeve 1 and the sealing protective sleeve 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is an overall schematic diagram of the sealing protective sleeve of the utility model;

[0022] Figure 3 This is an overall schematic diagram of the second sealing protective sleeve of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection relationship between the sealing protection sleeve 2 and the piston rod of the utility model;

[0024] Figure 5 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0025] Figure 6 For this utility model Figure 3 Enlarged schematic diagram of point B in the middle.

[0026] Figure numerals: 1. driving shaft; 2. sealing protective sleeve 1; 3. sealing protective sleeve 2; 4. threaded groove; 5. turntable; 6. knob; 7. threaded column; 8. groove 1; 9. piston rod; 10. spring 1; 11. vent pipe; 12. spring 2; 13. clamping piece; 14. trapezoidal piece; 15. button; 16. spring 3; 17. clamping slot; 18. groove 2; 19. button body; 20. sealing groove; 21. sealing airbag. DETAILED DESCRIPTION

[0027] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically explained in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the scope of protection of the specific request of the utility model. As used in this article, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors;

[0028] Combination Figures 1 to 6 As shown, the utility model provides a technical solution: a high-sealing anti-damage drive shaft, comprising two drive shafts 1;

[0029] The sealing protection assembly is arranged on the driving shaft 1, and the sealing assembly includes a sealing protection sleeve 1 2, a sealing protection sleeve 2 3, a threaded groove 4, a rotating disk 5, a rotating knob 6, a threaded column 7, a groove 1 8, a piston rod 9, a spring 10, a vent pipe 11, a sealing groove 20 and a sealing airbag 21. The sealing protection sleeve 1 2 is sleeved on the driving shaft 1, the sealing protection sleeve 2 3 is sleeved on another driving shaft 1, the sealing groove 20 is opened on the sealing protection sleeve 1 2, and the sealing airbag 21 is sleeved on the sealing protection sleeve 2 3;

[0030] The limiting assembly is arranged on the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3. The limiting assembly includes a spring 2 12, a clamp 13, a trapezoidal member 14, a button 15, a spring 3 16, a slot 17, a groove 2 18 and a button body 19. The clamp 13 is welded on the sealing protective sleeve 1 2, and the groove 2 18 is opened on the sealing protective sleeve 2 3. There are two limiting assemblies, and both limiting assemblies are arranged on the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3.

[0031] The groove 1 8 is formed on the sealing protection sleeve 2 3 , and the thread groove 4 is formed on the groove 1 8 .

[0032] The surface of the threaded column 7 is threadedly connected to the inner surface of the threaded groove 4 , the threaded column 7 is adhered to the turntable 5 , and the knob 6 is adhered to the turntable 5 .

[0033] The piston rod 9 slides through the sealing protective sleeve 2 3 , one end of the spring 10 is adhered to the piston rod 9 , and the other end of the spring 10 is adhered to the sealing protective sleeve 2 3 .

[0034] One end of the ventilation tube 11 is connected to the sealing protection sleeve 23, and the other end of the ventilation tube 11 is connected to the sealing airbag 21.

[0035] The two trapezoidal members 14 slide through the corresponding clamping members 13 , respectively. One ends of the two springs 12 are welded to the corresponding trapezoidal members 14 , respectively. The other ends of the two springs 12 are welded to the corresponding clamping members 13 , respectively.

[0036] The two card slots 17 are respectively opened on the corresponding groove 2 18 , the two button bodies 19 slide along the corresponding card slots 17 , and the two buttons 15 slide along the corresponding groove 2 18 .

[0037] One ends of the two springs three 16 are respectively welded to the corresponding buttons 15 , and the other ends of the two springs three 16 are respectively welded to the inside of the corresponding grooves two 18 .

[0038] When it is necessary to install the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3 and ensure the sealing performance of the driving shaft 1;

[0039] First, the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3 are fixedly sleeved on the corresponding driving shaft 1 respectively.

[0040] At the same time, the movement of the sealing protection sleeve 1 2 drives the corresponding two clamping members 13 to enter the corresponding sealing protection sleeve 2 3 , and the two springs 2 12 are reset to drive the corresponding trapezoidal member 14 to enter the corresponding clamping slot 17 .

[0041] Secondly, the knob 6 is rotated by external force, and the rotation of the knob 6 drives the turntable 5 to move, and the movement of the turntable 5 drives the threaded column 7 to move along the groove 8, and the movement of the threaded column 7 drives the piston rod 9 to move, and the movement of the piston rod 9 drives the spring 10 to be compressed, and the movement of the piston rod 9 pushes the compressed air inside the sealing protection sleeve 23 to enter the inside of the sealing airbag 21, and the sealing airbag 21 expands to the inside of the sealing groove 20 and is in close contact with the sealing groove 20, thereby ensuring the sealing of the drive shaft 1 during the movement process.

[0042] When it is necessary to disassemble the two drive shafts 1;

[0043] First, turn the knob 6. The rotation of the knob 6 drives the turntable 5 to move. The movement of the turntable 5 drives the threaded column 7 to move. At the same time, the spring 10 is reset. The reset of the spring 10 drives the piston rod 9 to move. At the same time, the gas in the sealing airbag 21 enters the interior of the sealing protective sleeve 23, and the sealing airbag 21 is no longer in close contact with the sealing groove 20.

[0044] Next, the two buttons 15 are pressed, and the movement of the two buttons 15 drives the corresponding button bodies 19 to move, and the movement of the two button bodies 19 drives the corresponding trapezoidal members 14 to move out of the corresponding slots 17, and then the two drive shafts 1 are detached.

[0045] By setting the knob 6 in the sealing assembly, when it is necessary to remove the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3, first, turn the knob 6 to allow the gas in the sealing airbag 21 to enter the interior of the sealing protective sleeve 2 3. After the sealing airbag 21 is no longer in close contact with the sealing groove 20, the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3 can be removed. This not only facilitates the disassembly of the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3, but also avoids the problem of directly pulling the tightly fitting sealing groove 20 and the sealing airbag 21, which causes wear and damage to the sealing airbag 21, thereby improving the service life of the sealing airbag 21.

[0046] By setting two buttons 15 in the limit assembly, the two trapezoidal members 14 can be separated from the corresponding slots 17 without the need for external tools. Only one hand is needed to press the two buttons 15, and the other hand can hold the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3, thereby improving the stability when disassembling the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3.

[0047] Working principle: When it is necessary to install the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3 and ensure the sealing of the driving shaft 1;

[0048] First, the sealing protective sleeve 1 2 and the sealing protective sleeve 2 3 are fixedly sleeved on the corresponding driving shaft 1 respectively.

[0049] At the same time, the sealing protection sleeve 1 2 drives the corresponding two clamping members 13 to enter the interior of the corresponding sealing protection sleeve 2 3 , and the two springs 2 12 are reset to drive the corresponding trapezoidal member 14 to enter the interior of the corresponding clamping slot 17 .

[0050] Secondly, the knob 6 is rotated by external force, and the knob 6 drives the turntable 5 to move. The movement of the turntable 5 drives the threaded column 7 to move along the groove 8. The movement of the threaded column 7 drives the piston rod 9 to move. The movement of the piston rod 9 drives the spring 10 to be compressed. The movement of the piston rod 9 pushes the compressed air inside the sealing protection sleeve 23 into the interior of the sealing airbag 21, and the sealing airbag 21 expands to the inside of the sealing groove 20.

[0051] When it is necessary to disassemble the two drive shafts 1;

[0052] First, turn the knob 6. The rotation of the knob 6 drives the turntable 5 to move. The movement of the turntable 5 drives the threaded column 7 to move. At the same time, the spring 10 is reset. The reset of the spring 10 drives the piston rod 9 to move. At the same time, the gas in the sealing airbag 21 enters the interior of the sealing protective sleeve 2 3.

[0053] Next, the two buttons 15 are pressed, and the movement of the two buttons 15 drives the corresponding button bodies 19 to move, and the movement of the two button bodies 19 drives the corresponding trapezoidal members 14 to move away from the inner positions of the corresponding slots 17 .

Claims

1. Highly sealed and damage-resistant drive shaft, characterized in that: include: two drive shafts (1); The sealing protection assembly is arranged on the driving shaft (1), and the sealing assembly comprises a sealing protection sleeve 1 (2), a sealing protection sleeve 2 (3), a threaded groove (4), a rotating disk (5), a rotating knob (6), a threaded column (7), a groove 1 (8), a piston rod (9), a spring 1 (10), a vent pipe (11), a sealing groove (20) and a sealing airbag (21). The sealing protection sleeve 1 (2) is sleeved on the driving shaft (1), the sealing protection sleeve 2 (3) is sleeved on another driving shaft (1), the sealing groove (20) is formed on the sealing protection sleeve 1 (2), and the sealing airbag (21) is sleeved on the sealing protection sleeve 2 (3); The limiting assembly is arranged on the sealing protective sleeve 1 (2) and the sealing protective sleeve 2 (3), and the limiting assembly comprises a spring 2 (12), a clamping piece (13), a trapezoidal piece (14), a button (15), a spring 3 (16), a clamping slot (17), a groove 2 (18) and a button body (19). The clamping piece (13) is welded on the sealing protective sleeve 1 (2), and the groove 2 (18) is provided on the sealing protective sleeve 2 (3). There are two limiting assemblies, and both limiting assemblies are arranged on the sealing protective sleeve 1 (2) and the sealing protective sleeve 2 (3).

2. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: The groove one (8) is formed on the sealing protection sleeve two (3), and the thread groove (4) is formed on the groove one (8).

3. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: The surface of the threaded column (7) is threadedly connected to the inner surface of the threaded groove (4); the threaded column (7) is adhered to the turntable (5); and the knob (6) is adhered to the turntable (5).

4. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: The piston rod (9) slides through the second sealing protective sleeve (3), one end of the first spring (10) is adhered to the piston rod (9), and the other end of the first spring (10) is adhered to the second sealing protective sleeve (3).

5. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: One end of the ventilation pipe (11) is connected to the second sealing protective sleeve (3), and the other end of the ventilation pipe (11) is connected to the sealing airbag (21).

6. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: The two trapezoidal members (14) respectively slide through the corresponding clamping members (13); one end of the two springs (12) is respectively welded to the corresponding trapezoidal members (14); and the other end of the two springs (12) is respectively welded to the corresponding clamping members (13).

7. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: The two card slots (17) are respectively opened on the corresponding groove 2 (18); the two button bodies (19) slide along the corresponding card slots (17); and the two buttons (15) slide along the corresponding groove 2 (18).

8. The high sealing and damage-resistant drive shaft according to claim 1, characterized in that: One end of the two springs three (16) is welded to the corresponding button (15), and the other end of the two springs three (16) is welded to the inside of the corresponding groove two (18).

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