High-speed transmission shaft moving joint dustproof sleeve sealing degree detection device

Abstract

The invention relates to the technical field of detection devices, and discloses a high-speed transmission shaft moving joint dustproof sleeve sealing degree detection device which comprises a fixed end cylinder, a movable end cylinder and a sliding rail, the movable end cylinder is slidably connected to the sliding rail in a sleeving mode, and the inner side ends of the fixed end cylinder and the movable end cylinder are used for being connected with a dustproof sleeve to form a sealed cavity. The side wall of the fixed end cylinder and the side wall of the movable end cylinder are fixedly connected with a first binding sleeve assembly and a second binding sleeve assembly correspondingly, the first binding sleeve assembly and the second binding sleeve assembly are used for connecting and fixing the fixed end cylinder and the movable end cylinder with the two ends of the dustproof sleeve correspondingly, an inflation mechanism is arranged in the fixed end cylinder, and an air pressure sensor penetrating into the interior is arranged on the side wall of the movable end cylinder; the air inflation mechanism is used for injecting air into the sealing cavity and cooperating with the movable end cylinder to stretch the dustproof sleeve, sealing detection is conducted on the dustproof sleeve in an air pressure mode, a traditional air detection mode is replaced, the manual observation process and the soap water smearing process are omitted, the detection process is simpler, and the detection efficiency is improved. And the sealing detection efficiency of the dustproof sleeve of the high-speed transmission shaft moving joint is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and more particularly to a detection device for the sealing degree of a dust cover of a high-speed drive shaft movable joint. Background Art

[0002] In the fields of modern automotive and machinery manufacturing, the high-speed drive shaft, as an important component for connecting and transmitting power, the stability and reliability of its performance are crucial. Among them, the movable joint (such as a constant velocity joint) is a key part of the high-speed drive shaft. However, due to the complex and changeable working environment of the movable joint, the dust cover, as an important protective component, the detection of its sealing degree becomes particularly important. The main function of the dust cover is to prevent external dust, moisture and other impurities from entering and the leakage of lubricating grease inside the movable joint. However, during the manufacturing and assembly process of the high-speed drive shaft, due to the influence of various factors such as materials, processes, and assembly accuracy, the sealing degree of the movable joint often fails to reach the ideal state, resulting in problems such as oil leakage and water seepage, which in turn affect the service life and performance of the drive shaft.

[0003] Most traditional sealing degree detection methods rely on manual operation and simple testing tools such as bubble detection. These methods have problems such as low detection accuracy, complex operation, and long time consumption. Especially in the working environment of high-speed drive shafts, tiny sealing defects may also lead to serious consequences such as oil leakage and failure. Therefore, there is an urgent need for an efficient and accurate sealing degree detection device. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a detection device for the sealing degree of a dust cover of a high-speed drive shaft movable joint to solve the problems of complex operation and low efficiency of traditional detection devices in the above-mentioned background art, difficulty in simulating the actual working dynamics of the movable joint for sealing detection, and insufficient detection accuracy.

[0005] The present invention provides the following technical solutions: A detection device for the sealing degree of a dust cover of a high-speed drive shaft movable joint, including a fixed-end cylinder, a movable-end cylinder, and a slide rail. The movable-end cylinder is slidably sleeved on the slide rail. The inner ends of the fixed-end cylinder and the movable-end cylinder are used to connect with the dust cover to form a sealed chamber. A tying sleeve assembly one and a tying sleeve assembly two are respectively fixedly connected to the side walls of the fixed-end cylinder and the movable-end cylinder. The tying sleeve assembly one and the tying sleeve assembly two are respectively used to connect and fix the two ends of the fixed-end cylinder and the movable-end cylinder with the dust cover. An inflation mechanism is arranged inside the fixed-end cylinder, and a pressure sensor penetrating through to the inside is arranged on the side wall of the movable-end cylinder; The inflation mechanism is used to inject gas into the sealed chamber and cooperate with the movable-end cylinder to stretch the dust cover.

[0006] Furthermore, the inflation mechanism includes an air injection mechanism, a telescopic exhaust cylinder assembly, and a connecting pipe. The side wall of the air injection mechanism is fixedly connected to the inner wall of the fixed end cylinder through a connecting plate. The telescopic exhaust cylinder assembly is fixedly connected at one end of the air injection mechanism. The output end of the telescopic exhaust cylinder assembly is connected to the telescopic exhaust cylinder assembly through a connecting pipe. The telescopic exhaust cylinder assembly includes an outer cylinder shell. A piston is slidably sleeved inside the outer cylinder shell. An inner cylinder column is fixedly connected to the inner wall of the piston. One end of the inner cylinder column passes through the outside of the outer cylinder shell. The side wall of the outer cylinder shell is provided with an air inlet and an air outlet connected to the inner cavity of the outer cylinder shell. The air inlet and the air outlet are respectively located on both sides of the piston. A transmission mechanism 1 is arranged on one side of the fixed end tube, a transmission mechanism 2 is arranged in the inner cavity of the movable end tube, the air injection mechanism cooperates with the transmission mechanism 1 to trigger the operation of the tying assembly 1, and the air injection mechanism cooperates with the transmission mechanism 2 to trigger the operation of the tying assembly 2.

[0007] Furthermore, a check valve is provided in the inner cavity of the air inlet.

[0008] Furthermore, the tying sleeve component 1 and the tying sleeve component 2 have the same structure, and the tying sleeve component 1 includes a fixed ring and a self-locking traction mechanism, the fixed ring is fixedly connected to the side wall of the fixed end cylinder, an annular insertion cavity is opened at one end of the annular rubber pad, an annular box groove is arranged on the inner wall of the fixed ring, an annular rubber pad is fixedly connected to the inner wall of the annular box groove, a tying rope is also arranged in the annular box groove, one end of the tying rope is fixedly connected to the end ring, and the other end of the tying rope goes around the side wall of the annular rubber pad, passes through the inner cavity of the end ring and passes through the annular box groove to connect with the self-locking traction mechanism.

[0009] Furthermore, the self-locking traction mechanism includes a fixed block, a shaft cavity is opened at one end of the fixed block, a movable shaft is slidably sleeved in the shaft cavity, a groove is opened at the top of the movable shaft, a plurality of ratchets are arranged in the groove, an accessory groove is arranged at the top of the shaft cavity of the fixed block, a ratchet is rotatably sleeved in the accessory groove, the ratchet is transmission connected to the inner wall of the accessory groove through a torsion spring, and the other end of the binding rope is connected to the fixed block and the movable shaft.

[0010] Furthermore, the gas injection mechanism includes a gas injection cylinder shell, the inner cavity of the gas injection cylinder shell is slidably sleeved with a piston 2, the side wall of the gas injection cylinder shell is provided with a gas supply pipe and an exhaust port connected to the interior, the gas supply pipe and the exhaust port are respectively located on both sides of the piston 2, the gas supply pipe is connected to the air pump, and the two sides of the piston 2 are respectively fixedly connected with a push rod and a pull rod, the other end of the pull rod passes through the outside of the fixed end cylinder and is connected to a tying sleeve assembly 1 through a transmission mechanism 1, and the other end of the push rod passes through the telescopic exhaust cylinder assembly and is connected to a tying sleeve assembly 2 through a transmission mechanism 2.

[0011] Further, the second transmission mechanism is composed of an inner rod and an L-shaped traction rod. The inner rod is arranged in the inner cavity of the moving end cylinder, and one end of the inner rod penetrates outside the moving end cylinder. The L-shaped traction rod is rotatably sleeved on the side wall of the inner rod. One end of the L-shaped traction rod is connected to the operating end of the second sleeve assembly. A locking mechanism is arranged between the inner cylinder column and the moving end cylinder. The locking mechanism is used for the combined connection of the inner cylinder column and the moving end cylinder. The rotation of the inner rod is used to control the opening and closing of the locking mechanism.

[0012] Further, the first transmission mechanism is composed of a traction rope, a first guide pulley, and a second guide pulley. One end of the traction rope is connected to the operating end of the first sleeve assembly, and the other end of the traction rope is connected to the inflation mechanism. The first guide pulley and the second guide pulley are fixedly connected on one side of the fixed end cylinder. The first guide pulley and the second guide pulley are used to adjust both ends of the traction rope to be in a horizontal state and connected to the first sleeve assembly and the inflation mechanism.

[0013] Further, the locking mechanism includes a hook plate and a buckle cylinder. The hook plate is fixedly connected to the side wall of the inner cylinder column. The buckle cylinder is rotatably sleeved at one end of the inner wall of the moving end cylinder. An embedding groove is opened at one end of the buckle cylinder, and a card slot communicating with the embedding groove is opened on the side wall of the buckle cylinder. A plurality of arm plates are arranged on the inner wall of the buckle cylinder, and the plurality of arm plates are butted against the inner rod.

[0014] Further, a plurality of strip-shaped limiting grooves are opened on the side wall of the inner rod, and the plurality of arm plates are respectively slidably sleeved in the plurality of strip-shaped limiting grooves.

[0015] The technical effects and advantages of the present invention: By setting the fixed end cylinder, the moving end cylinder, the first sleeve assembly, the second sleeve assembly, the air pressure sensor, and the inflation mechanism in cooperation, the present invention can perform a sealing detection on the dust cover by means of air pressure, replacing the traditional gas detection method, saving the manual observation process and the soap water smearing process, making the detection process simpler, and improving the sealing detection efficiency of the dust cover of the high-speed transmission shaft moving joint; On the above basis, the structure of the inflation mechanism is improved, and the injection mechanism, the telescopic exhaust cylinder assembly, and the connecting pipe are set to be linked. When the inflation mechanism operates, the telescopic exhaust cylinder assembly can generate a pushing effect on the moving end cylinder, and then through the cooperation of the fixed end cylinder and the moving end cylinder, a stretching effect on the dust cover is achieved, thereby simulating the stretching effect on the dust cover in the working environment of the high-speed transmission shaft moving joint and improving the detection accuracy; The structure of the injection mechanism is further optimized, and the first transmission mechanism and the second transmission mechanism are set. When the injection mechanism operates, it is linked with the first transmission mechanism and the second transmission mechanism to control the automatic operation of the first sleeve assembly and the second sleeve assembly to fix the dust cover, eliminating the manual operation process and improving the automation effect of the equipment, making the equipment more convenient and fast to use, and thus improving the detection process efficiency. Brief Description of the Drawings

[0016] Figure 1Schematic diagram of the overall structure of the present invention; Figure 2 Exploded schematic diagram of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the inflation mechanism therein; Figure 4 For the present invention Figure 2 Schematic diagram of the structure of the first sleeve assembly therein; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at position A therein; Figure 6 For the present invention Figure 4 Schematic diagram of the structure of the self-locking traction mechanism therein; Figure 7 For the present invention Figure 3 Schematic diagram of the structure of the air injection mechanism therein; Figure 8 For the present invention Figure 2 Schematic diagram of the structure of the first transmission mechanism therein; Figure 9 For the present invention Figure 3 Schematic diagram of the locking mechanism between the moving end cylinder and the inner cylinder column therein.

[0017] Reference numerals are: 1, fixed end cylinder; 2, moving end cylinder; 3, slide rail; 4, first sleeve assembly; 5, second sleeve assembly; 6, air pressure sensor; 7, inflation mechanism; 8, first transmission mechanism; 9, hook plate; 10, buckle cylinder; 11, inner rod; 12, L-shaped traction rod; 71, air injection mechanism; 72, telescopic exhaust cylinder assembly; 73, connecting pipe; 721, outer cylinder shell; 722, inner cylinder column; 723, first piston; 724, air inlet; 725, air outlet; 41, fixing ring; 42, annular rubber pad; 43, tying rope; 44, end ring; 45, self-locking traction mechanism; 451, fixing block; 452, moving shaft; 453, ratchet teeth; 454, ratchet pawl; 455, torsion spring; 711, air injection cylinder shell; 712, second piston; 713, air delivery pipe; 714, exhaust port; 715, push rod; 716, pull rod; 81, traction rope; 82, first guide pulley; 83, second guide pulley; 101, arm plate. Detailed Description of the Invention

[0018] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0019] Refer to Figure 1 and Figure 2, the present invention provides a detection device for the sealing degree of a dust-proof sleeve of a high-speed transmission shaft moving joint, including a fixed-end cylinder 1, a moving-end cylinder 2, and a slide rail 3. The moving-end cylinder 2 is slidably sleeved on the slide rail 3. The inner ends of the fixed-end cylinder 1 and the moving-end cylinder 2 are used to connect with the dust-proof sleeve to form a sealed chamber. A first sleeve assembly 4 and a second sleeve assembly 5 are respectively fixedly connected to the side walls of the fixed-end cylinder 1 and the moving-end cylinder 2. The first sleeve assembly 4 and the second sleeve assembly 5 are respectively used to connect and fix the fixed-end cylinder 1 and the moving-end cylinder 2 to both ends of the dust-proof sleeve. An inflation mechanism 7 is arranged inside the fixed-end cylinder 1, and a pressure sensor 6 penetrating through to the inside is arranged on the side wall of the moving-end cylinder 2; The inflation mechanism 7 is used to inject gas into the sealed chamber and cooperate with the moving-end cylinder 2 to stretch the dust-proof sleeve; During use, the two open ends of the dust-proof sleeve of the transmission shaft moving joint are sleeved on the inner ends of the fixed-end cylinder 1 and the moving-end cylinder 2 to form a connection. The connection is fixed by the first sleeve assembly 4 and the second sleeve assembly 5. At this time, a sealed chamber is formed inside the fixed-end cylinder 1, the moving-end cylinder 2, and the dust-proof sleeve. The inflation mechanism 7 injects gas into the sealed chamber to increase the air pressure inside the dust-proof sleeve. The pressure value can be detected by the pressure sensor 6. When the pressure value fluctuates and tends to be stable after injecting gas, the sealing degree of the dust-proof sleeve is qualified. If the pressure value fluctuates greatly, there is a gas leakage situation, and the sealing degree of the dust-proof sleeve is unqualified. Thus, the detection effect of the sealing degree is achieved. In addition, through the stretching effect of the inflation mechanism 7 operating in cooperation with the second sleeve assembly 5 on the dust-proof sleeve, it can be used to simulate the stretching of the dust-proof sleeve during the working process of the high-speed transmission shaft moving joint. Thus, the accuracy of the sealing degree detection of this device is improved.

[0020] Refer to Figure 2 , 3 , the inflation mechanism 7 includes an air injection mechanism 71, a telescopic exhaust cylinder assembly 72, and a connecting pipe 73. The side wall of the air injection mechanism 71 is fixedly connected to the inner wall of the fixed-end cylinder 1 through a connecting plate. The telescopic exhaust cylinder assembly 72 is fixedly connected to one end of the air injection mechanism 71. The output end of the telescopic exhaust cylinder assembly 72 is connected to the telescopic exhaust cylinder assembly 72 through the connecting pipe 73. The telescopic exhaust cylinder assembly 72 includes an outer cylinder shell 721. A first piston 723 is slidably sleeved inside the outer cylinder shell 721. An inner cylinder column 722 is fixedly connected to the inner wall of the first piston 723. One end of the inner cylinder column 722 penetrates outside the outer cylinder shell 721. An air inlet 724 and an air outlet 725 communicating with the inner cavity of the outer cylinder shell 721 are arranged on the side wall of the outer cylinder shell 721. The air inlet 724 and the air outlet 725 are respectively located on both sides of the first piston 723; A first transmission mechanism 8 is arranged on one side of the fixed-end cylinder 1, and a second transmission mechanism is arranged inside the moving-end cylinder 2. The air injection mechanism 71 cooperates with the first transmission mechanism 8 to trigger the operation of the first sleeve assembly 4, and the air injection mechanism 71 cooperates with the second transmission mechanism to trigger the operation of the second sleeve assembly 5.

[0021] When the inflation mechanism 7 operates, it outputs gas through the gas injection mechanism 71. The gas enters the inner cavity of the outer cylinder shell 721 through the connecting pipe 73 and the air inlet 724. As the air pressure increases, it forms a driving force on the first piston 723, which in turn drives the inner cylinder column 722 to slide, causing the first piston 723 to move outward from the outer cylinder shell 721 and form a driving force on the second sleeve assembly 5, enabling the moving end cylinder 2 to slide on the slide rail 3 and increasing the distance between the fixed end cylinder 1 and the moving end cylinder 2. Thus, a stretching effect is exerted on the dust cover. When the first piston 723 slides past the air outlet 725, the gas is output through the air outlet 725 to inject gas into the sealed chamber. When the gas injection mechanism 71 operates, it can also be linked with the first transmission mechanism 8 and the second transmission mechanism, enabling the first sleeve assembly 4 and the second sleeve assembly 5 to operate automatically, enhancing the automation effect of the equipment and making the operation process simpler.

[0022] Refer to Figure 3 , and a check valve is provided in the inner cavity of the air inlet 724.

[0023] To prevent the gas in the inner cavity of the outer cylinder shell 721 from flowing back through the air inlet 724 when the inflation mechanism 7 stops injecting gas, causing the inner cylinder column 722 to retract and the dust cover to rebound, affecting the internal air pressure value and interfering with the test results. By setting the check valve, the stability of the inner cylinder column 722 after movement can be ensured.

[0024] Refer to Figure 4 , 5 , the first sleeve assembly 4 and the second sleeve assembly 5 have the same structure. The first sleeve assembly 4 includes a fixed ring 41 and a self-locking traction mechanism 45. The fixed ring 41 is fixedly connected to the side wall of the fixed end cylinder 1. One end of the annular rubber pad 42 is provided with an annular insertion cavity. An annular box groove is provided on the inner wall of the fixed ring 41, and an annular rubber pad 42 is fixedly connected to the inner wall of the annular box groove. A tying rope 43 is also provided in the annular box groove. One end of the tying rope 43 is fixedly connected to an end ring 44, and the other end of the tying rope 43 surrounds the side wall of the annular rubber pad 42, passes through the inner cavity of the end ring 44, and penetrates out of the annular box groove to connect to the self-locking traction mechanism 45.

[0025] During use, the dust cover sleeved on one end of the fixed end cylinder 1 is inserted into the annular insertion cavity of the fixed ring 41. By pulling the self-locking traction mechanism 45 to traction the tying rope 43, the tying rope 43 surrounding the side wall of the annular rubber pad 42 is tightened. Thus, the dust cover inserted into the annular insertion cavity can be tightly bound by the tying rope 43. By setting the tying rope 43, abrasion of the dust cover by the tying rope 43 can be avoided. Additionally, since the first sleeve assembly 4 and the second sleeve assembly 5 have the same structure, the second sleeve assembly 5 fastens the dust cover on the moving end cylinder 2 in the same way.

[0026] Refer to Figure 6The self-locking traction mechanism 45 includes a fixed block 451, a shaft cavity is opened at one end of the fixed block 451, and a moving shaft 452 is slidably sleeved in the shaft cavity. A strip groove is opened at the top of the moving shaft 452, and a plurality of ratchet teeth 453 are arranged in the strip groove. An accessory groove is arranged at the top of the shaft cavity of the fixed block 451, and a ratchet 454 is rotatably sleeved in the accessory groove. The ratchet 454 is transmission-connected to the inner wall of the accessory groove through a torsion spring 455. The other end of the tying rope 43 is connected to the fixed block 451 and the moving shaft 452.

[0027] The movable shaft 452 is pulled to slide to form a traction effect on the tie rope 43. During this process, the ratchet 453 and the pawl 454 cooperate to form a one-way locking effect on the movable shaft 452 to prevent the tie rope 43 from retracting.

[0028] Reference Figure 2 The gas injection mechanism 71 includes a gas injection cylinder shell 711, and the inner cavity of the gas injection cylinder shell 711 is slidably sleeved with a piston 2 712. The side wall of the gas injection cylinder shell 711 is provided with a gas supply pipe 713 and an exhaust port 714 which are connected with the interior. The gas supply pipe 713 and the exhaust port 714 are respectively located on both sides of the piston 2 712. The gas supply pipe 713 is connected to the air pump. Push rods 715 and pull rods 716 are respectively fixedly connected on both sides of the piston 2 712. The other end of the pull rod 716 penetrates to the outside of the fixed end cylinder 1 and is connected to the tying sleeve assembly 1 4 through the transmission mechanism 1 8. The other end of the push rod 715 penetrates the telescopic exhaust cylinder assembly 72 and is connected to the tying sleeve assembly 2 5 through the transmission mechanism 2.

[0029] When the inflation mechanism 7 is running, gas is output through the air pump, and the gas enters the inner cavity of the gas injection cylinder shell 711 through the gas delivery pipe 713. As the gas pressure increases, a driving force can be formed on the piston 2 712 to cause it to move. When the piston 2 712 moves and slides over the exhaust port 714, the gas is output through the exhaust port 714. In this process, the piston 2 712 drives the push rod 715 and the pull rod 716 to move. When the pull rod 716 is displaced, it is transmitted through the transmission mechanism 1 8 to form a pulling force on the tying sleeve assembly 1 4 to make the tying sleeve assembly 1 4 operate. When the push rod 715 is displaced, it contacts with the transmission mechanism 2, and a pulling force is formed on the tying sleeve assembly 2 5 through the transmission mechanism 2 to make the tying sleeve assembly 2 5 operate.

[0030] Reference Figure 7 , 9 3. The transmission mechanism II is composed of an inner rod 11 and an L-shaped traction rod 12. The inner rod 11 is arranged in the inner cavity of the movable end tube 2, and one end of the inner rod 11 passes through the outside of the movable end tube 2. The side wall of the inner rod 11 is rotatably sleeved with the L-shaped traction rod 12, and one end of the L-shaped traction rod 12 is connected to the operating end of the tying sleeve assembly II 5. A locking mechanism is arranged between the inner cylinder column 722 and the movable end tube 2. The locking mechanism is used for the combined connection of the inner cylinder column 722 and the movable end tube 2, and the rotation of the inner rod 11 is used to control the opening and closing of the locking mechanism.

[0031] When the gas injection mechanism 71 operates, it forms a driving force on the inner rod 11, causing the inner rod 11 to slide and drive the L-shaped traction rod 12 to displace. Thus, a pulling force is formed on the operating end of the first sleeve assembly 4 through the L-shaped traction rod 12, triggering the operation of the first sleeve assembly 4. Since the moving end cylinder 2 is prone to sliding displacement under the influence of friction when the inner rod 11 moves, resulting in the relative position between the L-shaped traction rod 12 and the first sleeve assembly 4 remaining unchanged and unable to be triggered, by setting up a locking mechanism to connect the inner cylinder column 722 and the moving end cylinder 2, the displacement of the moving end cylinder 2 caused by the inner rod 11 can be avoided.

[0032] Refer to Figure 8 , the first transmission mechanism 8 is composed of a traction rope 81, a first guide pulley 82, and a second guide pulley 83. One end of the traction rope 81 is connected to the operating end of the first sleeve assembly 4, and the other end of the traction rope 81 is connected to the inflation mechanism 7. The first guide pulley 82 and the second guide pulley 83 are fixedly connected on one side of the fixed end cylinder 1. The first guide pulley 82 and the second guide pulley 83 are used to adjust both ends of the traction rope 81 to be in a horizontal state and connected to the first sleeve assembly 4 and the inflation mechanism 7.

[0033] When the gas injection mechanism 71 operates, it forms a pulling effect on the traction rope 81. Under the connection effect of the traction rope 81, a pulling force is formed on the operating end of the second sleeve assembly 5 to trigger the operation of the second sleeve assembly 5.

[0034] Refer to Figure 9 , the locking mechanism includes a hook plate 9 and a buckle cylinder 10. The hook plate 9 is fixedly connected to the side wall of the inner cylinder column 722, and the buckle cylinder 10 is rotatably sleeved at one end of the inner wall of the moving end cylinder 2. An embedding groove is opened at one end of the buckle cylinder 10, and a clamping groove communicating with the embedding groove is opened on the side wall of the buckle cylinder 10. A plurality of arm plates 101 are arranged on the inner wall of the buckle cylinder 10, and the plurality of arm plates 101 are butted against the inner rod 11.

[0035] When the inner cylinder column 722 contacts the moving end cylinder 2, the hook plate 9 enters the embedding groove of the buckle cylinder 10. By rotating the inner rod 11 to drive the buckle cylinder 10 to rotate, the hook plate 9 enters the clamping groove from the embedding groove. Through the hooking effect of the hook plate 9 in the clamping groove, the connection between the inner cylinder column 722 and the moving end cylinder 2 by the locking mechanism is realized.

[0036] Refer to Figure 9 , a plurality of strip-shaped limiting grooves are opened on the side wall of the inner rod 11, and the plurality of arm plates 101 are respectively slidably sleeved in the plurality of strip-shaped limiting grooves.

[0037] When the inner rod 11 rotates, since the arm plates 101 are in the strip-shaped limiting grooves, the buckle cylinder 10 can be toggled to rotate. When the inner rod 11 displaces, the arm plates 101 slide in the strip-shaped limiting grooves, thereby avoiding the interference of the locking mechanism on the displacement of the inner rod 11.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present invention. The present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust-proof sleeve sealing degree detection device for a high-speed transmission shaft moving joint, characterized in that: It includes a fixed-end cylinder (1), a moving-end cylinder (2), and a slide rail (3). The moving-end cylinder (2) is slidably sleeved on the slide rail (3). The inner ends of the fixed-end cylinder (1) and the moving-end cylinder (2) are used to connect with a dust cover to form a sealed chamber. On the side walls of the fixed-end cylinder (1) and the moving-end cylinder (2), a first binding sleeve assembly (4) and a second binding sleeve assembly (5) are respectively fixedly connected. The first binding sleeve assembly (4) and the second binding sleeve assembly (5) are respectively used to fixedly connect the fixed-end cylinder (1) and the moving-end cylinder (2) with both ends of the dust cover. An inflation mechanism (7) is arranged inside the fixed-end cylinder (1), and a pressure sensor (6) penetrating to the inside is arranged on the side wall of the moving-end cylinder (2). The inflation mechanism (7) is used to inject gas into the sealed chamber and cooperate with the moving-end cylinder (2) to stretch the dust cover.

2. The dust-proof sleeve sealing degree detection device for a high-speed drive shaft moving joint according to claim 1, wherein: The inflation mechanism (7) includes an air injection mechanism (71), a telescopic exhaust cylinder assembly (72), and a connecting pipe (73). The side wall of the air injection mechanism (71) is fixedly connected to the inner wall of the fixed-end cylinder (1) through a connecting plate. The telescopic exhaust cylinder assembly (72) is fixedly connected to one end of the air injection mechanism (71). The output end of the telescopic exhaust cylinder assembly (72) is connected to the telescopic exhaust cylinder assembly (72) through the connecting pipe (73). The telescopic exhaust cylinder assembly (72) includes an outer cylinder shell (721). A first piston (723) is slidably sleeved inside the outer cylinder shell (721). An inner cylinder column (722) is fixedly connected to the inner wall of the first piston (723). One end of the inner cylinder column (722) penetrates outside the outer cylinder shell (721). An air inlet (724) and an air outlet (725) communicating with the inner cavity of the outer cylinder shell (721) are arranged on the side wall of the outer cylinder shell (721). The air inlet (724) and the air outlet (725) are respectively located on both sides of the first piston (723). A first transmission mechanism (8) is arranged on one side of the fixed-end cylinder (1). A second transmission mechanism is arranged inside the moving-end cylinder (2). The air injection mechanism (71) cooperates with the first transmission mechanism (8) to trigger the operation of the first binding sleeve assembly (4). The air injection mechanism (71) cooperates with the second transmission mechanism to trigger the operation of the second binding sleeve assembly (5).

3. The dust-proof sleeve sealing degree detection device for the high-speed transmission shaft moving joint according to claim 2, wherein: A check valve is arranged inside the air inlet (724).

4. A dust-proof sleeve sealing degree detection device for a high-speed transmission shaft moving joint according to claim 1, characterized in that: The first binding sleeve assembly (4) and the second binding sleeve assembly (5) have the same structure. The first binding sleeve assembly (4) includes a fixing ring (41) and a self-locking traction mechanism (45). The fixing ring (41) is fixedly connected to the side wall of the fixed-end cylinder (1). An annular insertion cavity is opened at one end of an annular rubber pad (42). An annular box groove is arranged on the inner wall of the fixing ring (41). The annular rubber pad (42) is fixedly connected to the inner wall of the annular box groove. A binding rope (43) is also arranged inside the annular box groove. One end of the binding rope (43) is fixedly connected to an end ring (44). The other end of the binding rope (43) passes around the side wall of the annular rubber pad (42), penetrates through the inner cavity of the end ring (44), and then passes through the annular box groove to connect with the self-locking traction mechanism (45).

5. The dust boot sealing degree detection device for a high-speed transmission shaft moving joint according to claim 4, wherein: The self-locking traction mechanism (45) comprises a fixed block (451), one end of which is provided with an axial cavity, in which a movable shaft (452) is slidably sleeved, the top of which is provided with a groove, in which a plurality of ratchet teeth (453) are arranged, the top of the axial cavity of the fixed block (451) is provided with an accessory groove, in which a ratchet (454) is rotatably sleeved, the ratchet (454) is transmission-connected to the inner wall of the accessory groove via a torsion spring (455), and the other end of the binding rope (43) is connected to the fixed block (451) and the movable shaft (452).

6. The dust-proof sleeve sealing degree detection device for the high-speed transmission shaft moving joint according to claim 2, wherein: The gas injection mechanism (71) comprises a gas injection cylinder shell (711), the inner cavity of which is slidably sleeved with a second piston (712), and the side wall of the gas injection cylinder shell (711) is provided with a gas supply pipe (713) and an exhaust port (714) which are communicated with the interior, the gas supply pipe (713) and the exhaust port (714) are respectively located on both sides of the second piston (712), the gas supply pipe (713) is connected to an air pump, and the two sides of the second piston (712) are respectively fixedly connected with a push rod (715) and a pull rod (716), the other end of the pull rod (716) passes through the outside of the fixed end cylinder (1) and is transmission-connected to a first tying sleeve assembly (4) through a first transmission mechanism (8), and the other end of the push rod (715) passes through the telescopic exhaust cylinder assembly (72) and is transmission-connected to a second tying sleeve assembly (5) through a second transmission mechanism.

7. An airtightness detection device for a dust cover of a high-speed transmission shaft moving joint according to claim 2, characterized in that: The second transmission mechanism is composed of an inner rod (11) and an L-shaped traction rod (12). The inner rod (11) is arranged in the inner cavity of the movable end tube (2), and one end of the inner rod (11) passes through the outside of the movable end tube (2). The side wall of the inner rod (11) is rotatably sleeved with the L-shaped traction rod (12). One end of the L-shaped traction rod (12) is connected to the operating end of the second tying sleeve assembly (5). A locking mechanism is arranged between the inner tube column (722) and the movable end tube (2). The locking mechanism is used for the combined connection of the inner tube column (722) and the movable end tube (2). The rotation of the inner rod (11) is used to control the opening and closing of the locking mechanism.

8. The dust-proof sleeve sealing degree detection device for a high-speed transmission shaft moving joint according to claim 2, wherein: The transmission mechanism 1 (8) is composed of a traction rope (81), a guide pulley 1 (82), and a guide pulley 2 (83); one end of the traction rope (81) is connected to the operating end of the tying assembly 1 (4), and the other end of the traction rope (81) is connected to the inflation mechanism (7); the guide pulley 1 (82) and the guide pulley 2 (83) are fixedly connected to one side of the fixed end cylinder (1); the guide pulley 1 (82) and the guide pulley 2 (83) are used to adjust the two ends of the traction rope (81) to be in a horizontal state and connected to the tying assembly 1 (4) and the inflation mechanism (7).

9. An airtightness detection device for a dust-proof sleeve of a high-speed transmission shaft moving joint according to claim 7, characterized in that: The locking mechanism comprises a hook plate (9) and a buckle tube (10), wherein the hook plate (9) is fixedly connected to the side wall of the inner cylinder column (722), and the buckle tube (10) is rotatably sleeved on one end of the inner wall of the movable end cylinder (2), one end of the buckle tube (10) is provided with an embedding groove, and the side wall of the buckle tube (10) is provided with a clamping groove connected to the embedding groove, and the inner wall of the buckle tube (10) is provided with a plurality of arm plates (101), and the plurality of arm plates (101) are connected to the inner rod (11).

10. The dust boot seal degree detection device for the high-speed transmission shaft moving joint according to claim 9, characterized in that: A plurality of strip-shaped limiting grooves are formed in the side wall of the inner rod (11), and the plurality of arm plates (101) are respectively slidably sleeved in the plurality of strip-shaped limiting grooves.

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