A sealing component detection device

Abstract

The present application relates to the field of detection equipment, and in particular to a seal detection device, comprising: a detection cylinder having sliding holes coaxially formed at both ends, assembly grooves formed at both ends of the inner circumference of the detection cylinder for fixing the seal, the detection cylinder being divided by the plane where its axis lies into two half-cylinders that can be sealed and spliced ​​together; a piston rod inserted into the detection cylinder, both ends of the piston rod extending out of the sliding holes, the piston rod comprising two sliding rods and a loading rod coaxially detachable between the two sliding rods, the loading rod being used to fix the seal. The present application has the effects of simplifying operation, improving the detection efficiency of seals, and saving assembly and disassembly time.

Description

Technical Field

[0001] The present application relates to the field of detection equipment, and in particular to a sealing component detection device. Background Art

[0002] Sealing elements and the sealing system they consist of are important components for preventing leakage in hydraulic systems. Their sealing performance and anti-wear properties have a significant impact on the performance, reliability and life of the entire hydraulic system. Therefore, after the sealing elements are formed, it is generally necessary to test the reliability of the sealing elements. The experimental equipment used in this process is generally a sealing test bench.

[0003] The relevant Chinese patent application with application number 202011577699.X discloses a hydraulic sealing comprehensive test bench and experimental method, including a sealing test cylinder, a rotary sealing test box, a telescopic dragging cylinder, a dragging drive hydraulic power circuit, a loading hydraulic power circuit and a high-temperature experimental heating oil supply device. The loading hydraulic power circuit is connected to the sealing test cylinder through a hydraulic pipeline, and the oil circuit of the tested seal is controlled by the on-off of the shut-off valve; the reciprocating motion of the telescopic dragging cylinder is controlled by the shut-off valve or the rotary motion of the sealing test box driven by the rotary motor is controlled; the high-temperature experimental heating oil supply device is connected to the sealing test cylinder and the rotary sealing test box through a hydraulic pipeline, and the on-off supply of heating oil is controlled by the shut-off valve; various actual working conditions can be simulated to detect its sealing performance, tribological performance and sealing manufacturing quality, and can simultaneously meet the tests of high temperature, high speed, high pressure, impact and other projects and the dynamic performance change curve with continuously adjustable pressure, with strong comprehensive experimental capabilities and excellent energy-saving effects.

[0004] At present, seal inspection is mostly carried out using the above-mentioned experimental oil cylinder. Before and after using the experimental oil cylinder to inspect the seals, when installing and disassembling the seals, it is first necessary to remove the detection element at the end of the piston rod, then remove the cylinder cover of the experimental oil cylinder, disassemble the seals at both ends of the piston rod, remove the cylinder cover and the seal fixed to the experimental oil cylinder from one end of the piston rod, then pull the seal fixed to the piston rod out of the oil cylinder, remove the seal on the piston rod, complete the disassembly of all seals, and then reverse the operation and install the new seal before the inspection. The operation is extremely cumbersome, resulting in a lot of time being wasted on disassembly and installation before and after each inspection. Summary of the Invention

[0005] In order to simplify the operation, improve the detection efficiency of the seals, and save assembly and disassembly time, the present application provides a seal detection device.

[0006] The present application provides a seal detection device that adopts the following technical solution:

[0007] A sealing component detection device, comprising:

[0008] The detection cylinder has sliding holes coaxially opened at both ends. The inner circumference of the detection cylinder is formed with assembly grooves at both ends for fixing the seal. The detection cylinder is divided into two half cylinders that can be sealed and spliced ​​together by the plane where the axis is located;

[0009] The piston rod is inserted into the detection cylinder, and both ends of the piston rod extend out of the sliding hole. The piston rod includes two sliding rods and a loading rod coaxially detachable between the two sliding rods, and the loading rod is used to fix the sealing member.

[0010] When the two halves of the cylinder are separated, the seals fixed in the two halves of the cylinder will also be directly separated from the two halves of the cylinder. Then the sliding rods are moved away from each other, or the seals sleeved on the two sliding rods are directly slid toward the loading rod. The seals sleeved on the sliding rods can be separated from the sliding rods from the position where the loading rods are removed. At this point, the removal of all seals is completed. When reinstalling the seals, the above steps are performed in reverse order to reinstall the seals. Compared with the traditional method of first removing the detection elements at both ends of the piston rod, then removing the cylinder covers at both ends of the cylinder body, and then removing the seals separately and pulling out the piston rod, the operation is simple, time-consuming, and effectively improves the detection efficiency of the seals.

[0011] Optionally, also include:

[0012] A rotating half ring is coaxially rotatably arranged on the outer peripheral surface of the half cylinder, and both ends of the rotating half ring are formed with a first insert along the axis direction;

[0013] The movable half ring is coaxially slidable and rotatable on the outer circumference of the other half cylinder. Both ends of the movable half ring are formed with a first embedding groove along its axial direction. The first embedding block cooperates with the first embedding groove to limit the relative position of the rotating half ring and the movable half ring.

[0014] By adopting the above technical solution, when it is necessary to separate the two half-cylinders, the movable half-ring and the rotating half-ring are rotated synchronously so that the splicing seam between the movable half-ring and the rotating half-ring corresponds to the splicing seam of the two half-cylinders. Then, the movable half-ring is slid along the axial direction of the half-shaft to separate the first embedding block from the first embedding groove, thereby realizing the separation of the movable half-ring and the rotating half-ring, thereby realizing the separation of the two half-cylinders. When it is necessary to merge the two half-cylinders, the same reverse operation can be performed. By adopting the cooperation of the rotating half-ring and the movable half-ring, on the one hand, the firm splicing of the two half-cylinders is guaranteed, and on the other hand, the disassembly and fixation of the two half-cylinders can be conveniently realized.

[0015] Optionally, adjacent ends of the two sliding rods are vertically formed with a second embedding groove;

[0016] A second insert is formed at both ends of the loading rod, and the second insert is inserted into the second insert groove to limit the axial relative position of the loading rod and the sliding rod;

[0017] The side wall of the second insert is formed with spring jumping beans;

[0018] The second embedding groove is formed with a locking hole for cooperating with the spring jumping bean.

[0019] By adopting the above technical solution, when the seal is loaded on the piston rod, the detection cylinder is opened, and the second embedment block of the loading rod is pulled out from the second embedment groove of the sliding rod. At this time, the spring jumping bean can be separated from the locking hole by force, thereby realizing the separation of the loading rod. Then the seal is sleeved on the loading rod, and the second embedment blocks at both ends of the loading rod are re-inserted into the second embedment grooves at both ends of the sliding rod until the spring jumping bean is stuck in the locking hole. At this time, the docking of the loading rod and the sliding rod can be completed, and then the detection cylinder can be closed. During the experiment, since the circumferential surface of the seal can abut against the inner circumferential surface of the detection cylinder, the live rod only bears axial force, and the cooperation of the second embedment groove and the second embedment block ensures that the loading rod will not be separated from the sliding rod, thereby ensuring the completion of the operation.

[0020] Optionally, an elastic positioning member is provided on one side of the half cylinder corresponding to the rotating half ring;

[0021] The rotating half ring is formed with an inserting hole. When the joint seam between the rotating half ring and the movable half ring is misaligned with the joint seam between the two half cylinders, the elastic positioning piece can be inserted into the inserting hole.

[0022] By adopting the above technical solution, the elastic positioning member and the socket are used in conjunction to achieve position limitation when the joint seam between the rotating half ring and the movable half ring is misaligned with the joint seam between the two half cylinders, thereby ensuring the firm joint of the two half cylinders.

[0023] Optionally, also include:

[0024] A test bench, the piston rod slides horizontally on the test bench, and the detection cylinder is sleeved on the piston rod;

[0025] The movable plate is movably arranged on the experimental table along the direction perpendicular to the axis of the piston rod. The two half cylinders are respectively fixed to the adjacent sides of the two movable plates. The two movable plates are symmetrically provided with inclined guide grooves with their upper ends inclined in a direction away from each other.

[0026] Two lifting rods are vertically liftable and arranged on the experimental table, and cooperate with the two inclined guide grooves. When the two lifting rods move to the upper ends of the two inclined guide grooves, the two half cylinders are spliced ​​with each other.

[0027] By adopting the above technical solution, during operation, the vertical upward movement of the two lifting rods can cooperate with the two inclined guide grooves to push the two movable plates to move in similar directions until the two half cylinders are spliced ​​together. When the two lifting rods move vertically downward, the cooperation with the two inclined guide grooves can push the two movable plates to move in opposite directions, thereby separating the two half cylinders.

[0028] Optionally, also include:

[0029] A horizontal guide rail is vertically and liftably arranged on the experimental table, and the two movable plates are movably arranged on the horizontal guide rail;

[0030] A horizontal elastic member is fixed between the two movable plates and is used to push the two movable plates to move in opposite directions;

[0031] A vertical elastic member is fixed between the test bench and the horizontal rail, and is used to push the horizontal rail away from the test bench;

[0032] The limiting plate is fixed horizontally on the experimental table and is located on the upper side of the movable plate. When the two lifting rods push the two movable plates up to abut against the limiting plate, the two half cylinders are spliced ​​together.

[0033] By adopting the above technical solution, when it is necessary to separate the two half-cylinders, the two lifting rods drop vertically, and the horizontal guide rail will first be restricted by the vertical elastic member and will not drop vertically, while the horizontal elastic member will push the two movable plates to move away from each other as the lifting rods and the inclined guide grooves cooperate to separate. When the upper ends of the lifting rods are located at the lower ends of the inclined guide grooves as the two movable plates move, the movable plates drive the two half-cylinders to separate to the horizontal limit position, and then the two lifting rods continue to drop, and will drag the horizontal guide rails through the movable plates to start vertical downward movement synchronously, compressing the vertical elastic member until the movable plates drive the two half-cylinders to be located at the lower side of the piston rod. In summary, when disassembly is achieved, the two half-cylinders are The action mode of the cylinder first separating horizontally and then descending vertically is convenient for disassembling the piston rod; when the two half cylinders need to be merged, the two lifting rods rise, and the vertical elastic member first pushes the cross guide rail to rise vertically until the upper sides of the two movable plates abut against the limit plate, and then as the lifting rods continue to rise, the two lifting rods cooperate with the oblique guide grooves of the two movable plates to push the two movable plates to move in similar directions, so that the half cylinders are spliced ​​together and sleeved on the outside of the piston rod to complete the splicing and fixation of the detection cylinder. In summary, when splicing is realized, the action mode of the two half cylinders first moving vertically and then moving horizontally is convenient for completing the splicing of the detection cylinder after the seal is loaded on the piston rod.

[0034] Optionally, also include:

[0035] The supporting sleeve is fixed horizontally and coaxially on the experimental table and is used to cooperate with the two sliding rods of the piston rod.

[0036] By adopting the above technical solution and the supporting sleeve, the two sliding rods of the piston rod can be supported and the two piston rods can slide on the experimental table.

[0037] Optionally, also include:

[0038] a first ring sleeve, fixed to the loading rod, for carrying the sealing member;

[0039] The two second ring sleeves are sleeved on the two sliding rods and matched with the assembly groove of the detection cylinder for carrying the sealing member. Positioning marks are formed on the sliding rods corresponding to the installation positions of the second ring sleeves.

[0040] By adopting the above technical solution, during the experiment, after disassembling the loading rod from between the two sliding rods, the tested seal is directly placed on the first ring sleeve on the loading rod, and then the other tested seal is placed on the second ring sleeve of the sliding rod from the adjacent end of the two sliding rods, and corresponding to the markings on the sliding rods, the loading rod is reinstalled and the two half-cylinders are spliced ​​to achieve the loading of all seals.

[0041] Optionally, both ends of the second ring sleeve are tapered;

[0042] Both ends of the assembly groove are formed into conical surfaces for matching with the second ring sleeve.

[0043] By adopting the above technical solution, the cones at both ends of the second ring sleeve are matched with the cone surfaces at both ends of the assembly groove. When the second ring sleeve is installed, when the second ring sleeve is slightly offset relative to the assembly groove, the second ring sleeve can also automatically adjust to fit the assembly groove.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. When installing the seal, directly open the two half-cylinders, then remove the loading rod of the piston rod from between the two sliding rods, and the seal on the loading rod can be easily removed. At the same time, as the two half-cylinders are separated, the seals fixed in the two half-cylinders will also directly separate from the two half-cylinders. Then, move the sliding rods in the direction away from each other, or directly slide the seals sleeved on the two sliding rods in the direction of the loading rod, so that the seals sleeved on the sliding rods can be separated from the sliding rods from the position where the loading rods are removed. At this point, the removal of all seals is completed. When reinstalling the seal, the above steps are performed in reverse to achieve the reinstallation of the seal. Compared with the traditional method of first removing the detection elements at both ends of the piston rod, then removing the cylinder covers at both ends of the cylinder body, and then removing the seals separately, and pulling out the piston rod, the operation is simple, time-consuming, and effectively improves the detection efficiency of the seal.

[0046] 2. When the two half-cylinders need to be separated, the movable half-ring and the rotating half-ring are rotated synchronously so that the joint between the movable half-ring and the rotating half-ring corresponds to the joint between the two half-cylinders. Then, the movable half-ring is slid along the axis of the half-shaft to separate the movable half-ring from the rotating half-ring, thereby separating the two half-cylinders. When the two half-cylinders need to be merged, the same reverse operation is performed. The cooperation between the rotating half-ring and the movable half-ring ensures the firm splicing of the two half-cylinders on the one hand, and can also facilitate the disassembly and fixation of the two half-cylinders on the other hand.

[0047] 3. When the two half-cylinders need to be separated, the two jacking rods drop vertically, and the horizontal guide rail will first be restricted by the vertical elastic member and will not drop vertically, while the horizontal elastic member will push the two movable plates to move away from each other as the jacking rods and the inclined guide grooves cooperate to separate. When the upper end of the jacking rod is located at the lower end of the inclined guide groove as the two movable plates move, the movable plate drives the two half-cylinders to separate to the horizontal limit position, and then the two jacking rods continue to drop, and will drag the horizontal guide rails through the movable plate to start vertical downward movement synchronously, compressing the vertical elastic member until the movable plate drives the two half-cylinders to be located at the lower side of the piston rod. In summary, when disassembly is achieved, the two half-cylinders are first separated horizontally. When the two half cylinders need to be combined, the two lifting rods rise, and the vertical elastic member first pushes the cross guide rail to rise vertically until the upper sides of the two movable plates abut against the limit plate. Then, as the lifting rods continue to rise, the two lifting rods cooperate with the oblique guide grooves of the two movable plates to push the two movable plates to move in similar directions, so that the half cylinders are spliced ​​together and sleeved on the outside of the piston rod to complete the splicing and fixation of the detection cylinder. In summary, when splicing is realized, the two half cylinders first move vertically and then move horizontally in a similar direction, which is convenient for completing the splicing of the detection cylinder after the seal is loaded on the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 Schematic diagram of the overall structure of the sealing component detection device in the embodiment of the present application;

[0049] Figure 2 This is a schematic diagram of a sliding hole structure in an embodiment of the present application;

[0050] Figure 3 This is a schematic diagram showing the assembly and disassembly structure in an embodiment of the present application;

[0051] Figure 4 This is an explosion diagram of the detection cylinder structure in an embodiment of the present application;

[0052] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0053] Explanation of the accompanying symbols: 1. Laboratory table; 2. Telescopic cylinder; 3. Inspection cylinder; 31. Slide hole; 32. Half cylinder; 321. Slide groove; 322. T-slot; 323. Elastic positioning member; 324. Assembly groove; 33. Rotating half ring; 331. First embedded block; 34. Movable half ring; 341. First embedded groove; 4. Piston rod; 41. Sliding rod; 411. Second embedded groove; 412. Locking hole; 413. Positioning mark; 42. Loading rod; 421. Second embedded block; 422. Spring jumping beans; 43. First ring sleeve; 44. Second ring sleeve; 5. Support slide sleeve; 6. Assembly and disassembly mechanism; 61. Vertical rail; 62. Limit plate; 63. Horizontal guide rail; 64. Vertical elastic member; 65. Movable plate; 651. Oblique guide groove; 66. Horizontal elastic member; 67. Lifting rod; 671. Connecting rod; 68. Lifting cylinder. DETAILED DESCRIPTION

[0054] This application is mainly used to solve the problem that the installation and removal of seals in traditional experimental oil cylinders are cumbersome, resulting in a lot of time wasted on disassembly and installation before and after each test. To this end, the application discloses a seal detection device that can simplify the operation, improve the detection efficiency of seals, and save installation and removal time.

[0055] The following is combined with Figure 1-5 This application is described in further detail.

[0056] Reference Figure 1 A sealing component detection device includes a test bench 1. The upper surface of the test bench 1 is horizontally arranged and has a long rectangular structure. A telescopic cylinder 2 is horizontally fixed to one end of the upper surface of the test bench 1. The axis of the telescopic cylinder 2 is horizontally arranged. A test oil cylinder is also arranged at the other end of the upper surface of the test bench 1. The axis direction of the test oil cylinder is coaxial with the axis of the telescopic cylinder 2.

[0057] Reference Figure 1 The test cylinder includes a detection cylinder 3 and a piston rod 4 extending from both ends of the detection cylinder 3. Support sleeves 5 are coaxially fixed to the test bench 1 at positions corresponding to the ends of the piston rod 4. The piston rod 4 is slidably connected to the support sleeves 5. A connector is provided between the piston rod 4 and the telescopic rod of the telescopic cylinder 2. The extension and retraction of the telescopic rod of the telescopic cylinder 2 can drive the piston rod 4 to slide within the detection cylinder 3.

[0058] Reference Figure 1 and Figure 2 Specifically, sliding holes 31 are coaxially formed at both ends of the detection cylinder 3. The piston rod 4 slides on the detection cylinder 3 through the two sliding holes 31. The detection cylinder 3 is divided into two halves 32 along the plane where its axis lies. The two halves 32 are spliced ​​together to form the detection cylinder 3. The laboratory bench 1 is provided with an assembly and disassembly mechanism 6 at each end of the detection cylinder 3 to realize the disassembly or merging of the two halves 32.

[0059] Reference Figure 3 The assembly and disassembly mechanism 6 includes vertical rails 61 vertically fixed to the two sides of the corresponding detection cylinder 3 of the test bench 1, and limit plates 62 are horizontally fixed to the upper ends of the two vertical rails 61. A horizontal guide rail 63 is horizontally arranged between the two vertical rails 61, and is vertically slidably connected to the horizontal guide rail 63. The length direction of the horizontal guide rail 63 is perpendicular to the axial direction of the detection cylinder 3, and the two ends of the horizontal guide rail 63 are vertically slidably connected to the two vertical rails 61. A vertical elastic member 64, such as a spring, is vertically fixed between the lower side of the horizontal guide rail 63 and the test bench 1. The vertical elastic member 64 can push the horizontal guide rail 63 to move vertically upward.

[0060] Reference Figure 3 Two movable plates 65 are horizontally arranged on the upper side of the horizontal guide rail 63. The two movable plates 65 are horizontally slidably connected to the horizontal guide rail 63, and the adjacent sides of the two movable plates 65 are respectively fixed to the two half-cylinders 32. As the two movable plates 65 move toward each other, they can drive the two half-cylinders 32 to be spliced ​​together to form the detection cylinder 3.

[0061] Reference Figure 3 The two movable plates 65 have accommodating grooves formed on their adjacent sides. A horizontal elastic member 66, such as a spring, is fixed within the accommodating groove. The horizontal elastic member 66 can push the two movable plates 65 toward each other. The two movable plates 65 also have inclined guide grooves 651 formed on their diverging sides. The diverging ends of the two inclined guide grooves 651 extend upward at an angle. Two lifting rods 67 are vertically mounted on the experimental table 1. The upper ends of the two lifting rods 67 vertically pass through the horizontal guide rail 63 and slideably connect to the inclined guide grooves 651. When the upper ends of the two lifting rods 67 slide to the upper ends of the inclined guide grooves 651 of the two movable plates 65, the two movable plates 65 can move toward each other until the two half-cylinders 32 are spliced ​​identically.

[0062] Reference Figure 3 The lower ends of the two lifting rods 67 are horizontally fixed with a connecting rod 671 to ensure that the two lifting rods 67 can move synchronously. A lifting cylinder 68 is also vertically fixed in the experimental table 1, and the telescopic rod of the lifting cylinder 68 is fixed upward to the connecting rod 671.

[0063] Reference Figure 3When the two half cylinders 32 need to be separated, the lifting cylinder 68 cooperates with the connecting rod 671 to drive the lifting rod 67 to descend vertically. The cross guide rail 63 will first be restricted by the vertical elastic member 64 and will not descend vertically. The horizontal elastic member 66 will push the two movable plates 65 to move away from each other as the lifting rod 67 cooperates with the inclined guide groove 651 until they are separated. When the upper end of the lifting rod 67 is located at the lower end of the inclined guide groove 651 as the two movable plates 65 move, the movable plate 65 drives the two half cylinders 32 to separate to the horizontal limit position, and then the two lifting rods 67 continue to descend, and will drag the cross guide rail 63 through the movable plate 65 to synchronously start vertical downward movement, compressing the vertical elastic member 64 until the movable plate 65 drives the two half cylinders 32 to be located at the lower side of the piston rod 4, realizing the action mode of the two half cylinders 32 being separated horizontally first and then descending vertically during disassembly, which is convenient for disassembly of the piston rod 4.

[0064] Reference Figure 3 When the two half-cylinders 32 need to be merged, the two lifting rods 67 are driven to rise by the lifting cylinder 68 in cooperation with the connecting rod 671. The vertical elastic member 64 first pushes the horizontal guide rail 63 to rise vertically until the upper sides of the two movable plates 65 abut against the limit plate 62. Then, as the lifting rod 67 continues to rise, the two lifting rods 67 cooperate with the oblique guide grooves 651 of the two movable plates 65 to push the two movable plates 65 to move in a similar direction, so that the half-cylinders 32 are spliced ​​together and sleeved on the outside of the piston rod 4 to complete the splicing and fixation of the detection cylinder 3. When splicing is realized, the two half-cylinders 32 first move vertically and then move horizontally in a similar direction, which is convenient for completing the splicing of the detection cylinder 3 after the seal is loaded on the piston rod 4.

[0065] Furthermore, in order to improve the connection tightness of the two half-cylinders 32, multiple sets of locking mechanisms are provided on the two half-cylinders 32 along their axial directions, so as to improve the stable sealing and fixation of the two half-cylinders 32.

[0066] Reference Figure 2 Specifically, the locking mechanism includes a rotating half ring 33 and a movable half ring 34 respectively provided on the two half cylinders 32.

[0067] Reference Figure 2 and Figure 4A sliding groove 321 is formed on the circumference of one half of the cylinder 32, corresponding to the position of the rotating half-ring 33. A sliding post is formed on the inner side of the rotating half-ring 33. The sliding post cooperates with the sliding groove 321, allowing the rotating half-ring 33 to be coaxially rotatably arranged on the outer circumference of one half of the cylinder 32. A T-slot 322 is formed on the circumference of the other half of the cylinder 32. The T-slot 322 includes an arcuate portion coaxially provided on the half-cylinder 32 and capable of being spliced ​​with the sliding groove 321 of the other half of the cylinder 32, and a horizontal portion provided on one side of the arcuate portion along the axis of the half-cylinder 32. A sliding post is also formed on the inner side of the movable half-ring 34. The sliding post cooperates with the horizontal portion of the T-slot 322 to enable the movable half-ring 34 to slide along the axis of the half-cylinder 32. The sliding post cooperates with the arcuate portion of the T-slot 322 to enable the movable half-ring 34 to rotate relative to the half-cylinder 32.

[0068] Reference Figure 2 and Figure 4 Both ends of the rotating half ring 33 are formed with a first embedding block 331 along the axial direction thereof, and both ends of the movable half ring 34 are formed with a first embedding groove 341 along the axial direction thereof. The cross-sections of the first embedding groove 341 and the first embedding block 331 are both T-shaped. After the two half cylinders 32 are spliced ​​together, the movable half ring 34 is slid along the axial direction of the half cylinder 32, so that the first embedding groove 341 of the movable half ring 34 can be embedded with the first embedding block 331 of the rotating half ring 33, thereby limiting the relative position of the rotating half ring 33 and the movable half ring 34.

[0069] Reference Figure 2 and Figure 4 When the two half-cylinders 32 need to be separated, the movable half-ring 34 and the rotating half-ring 33 are rotated synchronously so that the splicing seam between the movable half-ring 34 and the rotating half-ring 33 corresponds to the splicing seam between the two half-cylinders 32. Then, the movable half-ring 34 is slid along the axial direction of the half-cylinder 32 to separate the movable half-ring 34 from the rotating half-ring 33, thereby realizing the separation of the two half-cylinders 32. When the two half-cylinders 32 need to be merged, the same reverse operation can be performed. By adopting the cooperation of the rotating half-ring 33 and the movable half-ring 34, on the one hand, the firm splicing of the two half-cylinders 32 is guaranteed, and on the other hand, the disassembly and fixation of the two half-cylinders 32 can be conveniently realized.

[0070] Reference Figure 2 and Figure 4Furthermore, an elastic positioning piece 323 such as an elastic jumping bean is provided on one side of the half cylinder 32 corresponding to the rotating half ring 33, and the rotating half ring 33 is formed with an insertion hole (not shown in the figure). When the rotating half ring 33 and the movable half ring 34 are rotated, so that the splicing seam of the rotating half ring 33 and the movable half ring 34 is misaligned with the splicing seam of the two half cylinders 32, the elastic positioning piece 323 can be inserted into the insertion hole, thereby limiting the position of the rotating half ring 33, the movable half ring 34 and the half cylinder 32, ensuring the firm splicing of the two half cylinders 32. When the rotating half ring 33 is rotated with force, the elastic positioning piece 323 can be disengaged from the insertion hole, which facilitates the separation of the rotating half ring 33 and the movable half ring 34.

[0071] Refer to 4 and Figure 5 The piston rod 4 includes two sliding rods 41 and a loading rod 42 coaxially detachably mounted between the two sliding rods 41. A second inlay groove 411 is vertically formed at the adjacent ends of each sliding rod 41. A second insert 421 is formed at each end of the loading rod 42. The second insert 421 and the second inlay groove 411 both have a T-shaped cross-section. The second insert 421, when inserted into the second inlay groove 411, restricts the axial relative position of the loading rod 42 and the sliding rod 41. A spring-loaded bean 422 is formed on the sidewall of the second insert 421, and a locking hole 412 is formed in the second inlay groove 411 for engaging with the spring-loaded bean 422. After the second embedment block 421 is inserted into the second embedment groove 411, the second embedment block 421 and the second embedment groove 411 can be fixed by the cooperation between the spring jumping bean 422 and the locking hole 412. When disassembly is required, the loading rod 42 can be pulled out in the direction away from the second embedment groove 411 to compress the spring jumping bean 422 and disengage from the locking hole 412, thereby ensuring smooth disassembly of the loading rod 42.

[0072] Reference Figure 4 and Figure 5 A first collar 43 is sleeved onto the loading rod 42. The first collar 43 can be secured to the loading rod 42 using threads or bolts. A mounting groove is formed on the first collar 43 for mounting a seal. Mounting grooves 324 are formed at both ends of the half-cylinder 32. These grooves 324 are tapered surfaces that converge at both ends. A second collar 44 is sleeved onto the sliding rod 41. The second collar 44 is slidably mounted on the sliding rod 41, and both ends of the second collar 44 are tapered to fit within the mounting grooves 324. This ensures that the mounting grooves 324 of the half-cylinders 32 fit within the second collar 44 when the half-cylinders 32 are joined. If the second collar 44 deviates slightly from the mounting groove 324, the collar 44 is automatically adjusted to fit within the groove 324 by the collar 44. The second collar 44 also has mounting grooves formed on its circumference for mounting a seal.

[0073] Reference Figure 4 and Figure 5The sliding rod 41 may also be provided with a positioning mark 413 for the operator to determine the installation position of the second ring 44.

[0074] Reference Figure 4 and Figure 5 , so, when loading the seal on the piston rod 4, open the experimental cylinder, pull out the second insert 421 of the loading rod 42 from the second insert groove 411 of the sliding rod 41, and realize the separation of the loading rod 42, then sleeve the seal on the installation groove of the first ring sleeve 43 of the loading rod 42, and then install the seal on the installation groove of the second ring sleeve 44, and then sleeve the second ring sleeve 44 on the sliding rod 41 respectively, and adjust the position of the second ring sleeve 44 according to the positioning mark 413, and then re-install the loading rod The second embedded blocks 421 at both ends of 42 are inserted into the second embedded grooves 411 at both ends of the sliding rod 41 until the spring jumping beans 422 are locked in the locking holes 412, completing the docking of the loading rod 42 and the sliding rod 41, and then splicing the two half cylinders 32. During the experiment, since the circumferential surface of the seal can abut against the inner circumferential surface of the experimental cylinder, the live rod only bears axial force, and the cooperation between the second embedded grooves 411 and the second embedded blocks 421 ensures that the loading rod 42 will not be separated from the sliding rod 41, thereby ensuring the completion of the experiment.

[0075] The implementation principle of a sealing detection device in the embodiment of the present application is as follows:

[0076] When installing the seal, the two half cylinders 32 are directly opened, and the loading rod 42 of the piston rod 4 is removed from between the two sliding rods 41, so that the seal on the loading rod 42 can be easily removed. At the same time, as the two half cylinders 32 are separated, the seals fixed in the two half cylinders 32 will also directly separate from the two half cylinders 32, and then the sliding rod 41 is moved away from each other, or the seals sleeved on the two sliding rods 41 are directly slid toward the loading rod 42, so that the seals sleeved on the sliding rod 41 can be separated from the sliding rod 41 from the position where the loading rod 42 is removed. At this point, the removal of all seals is completed. When reinstalling the seal, the above steps are performed in reverse to achieve the reinstallation of the seal. Compared with the traditional method of first removing the detection components at both ends of the piston rod 4, then removing the cylinder covers at both ends of the cylinder body, and then removing the seals separately, and pulling out the operating direction of the piston rod 4, the operation is simple, time-consuming, and effectively improves the detection efficiency of the seal.

[0077] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A seal detection device, characterized in that: include: The detection cylinder (3) has sliding holes (31) coaxially formed at both ends. The inner circumferential surface of the detection cylinder (3) is formed with assembly grooves (324) at both ends for fixing the sealing member. The detection cylinder (3) is divided into two half cylinders (32) that can be sealed and spliced ​​together by the surface where the axis is located. A piston rod (4) is inserted into the detection cylinder (3), with both ends of the piston rod (4) extending out of the sliding hole (31), and the piston rod (4) includes two sliding rods (41) and a loading rod (42) coaxially detachable between the two sliding rods (41), and the loading rod (42) is used to fix the sealing member; A rotating half ring (33) is coaxially rotatably arranged on the outer peripheral surface of the half cylinder (32), and both ends of the rotating half ring (33) are formed with a first insert (331) along the axial direction thereof; A movable half ring (34) is coaxially slidably and rotatably arranged on the outer peripheral surface of the other half cylinder (32), and both ends of the movable half ring (34) are formed with a first embedded groove (341) along the axial direction thereof, and the first embedded groove (341) cooperates with the first embedded block (331) to limit the relative position of the rotating half ring (33) and the movable half ring (34); A second embedding groove (411) is vertically formed at the adjacent ends of the two sliding rods (41); Both ends of the loading rod (42) are formed with second inserts (421), and the second inserts (421) are inserted into the second insert groove (411) to limit the axial relative position of the loading rod (42) and the sliding rod (41); the side wall of the second insert (421) is formed with spring jumping beans (422); The second embedding groove (411) is formed with a locking hole (412) for cooperating with the spring jumping bean (422).

2. A sealing component detection device according to claim 1, characterized in that: An elastic positioning member (323) is provided on one side of the half cylinder (32) corresponding to the rotating half ring (33); the rotating half ring (33) is formed with an insertion hole, and when the joint seam between the rotating half ring (33) and the movable half ring (34) is misaligned with the joint seam between the two half cylinders (32), the elastic positioning member (323) can be inserted into the insertion hole.

3. A sealing component detection device according to claim 1, characterized in that: Also includes: The test bench (1) comprises a piston rod (4) which slides horizontally on the test bench (1), and a detection cylinder (3) which is sleeved on the piston rod (4); a movable plate (65) which is movably arranged on the test bench (1) along an axial direction perpendicular to the piston rod (4); the two half cylinders (32) are respectively fixed on adjacent sides of the two movable plates (65); the two movable plates (65) are symmetrically provided with inclined guide grooves (651) whose upper ends tend to be inclined away from each other; two lifting rods (67) which are vertically liftable and arranged on the test bench (1) and cooperate with the two inclined guide grooves (651); when the two lifting rods (67) move to the upper ends of the two inclined guide grooves (651), the two half cylinders (32) are spliced ​​with each other.

4. A sealing component detection device according to claim 3, characterized in that: Also includes: A transverse guide rail (63) is vertically arranged on the experimental table (1) and can be lifted and lowered. The two movable plates (65) are movably arranged on the transverse guide rail (63). A horizontal elastic member (66) is fixed between the two movable plates (65) and is used to push the two movable plates (65) to move in a direction of separation. A vertical elastic member (64) is fixed between the experimental table (1) and the transverse guide rail (63) and is used to push the transverse guide rail (63) away from the experimental table (1). A limit plate (62) is horizontally fixed to the experimental table (1) and is located on the upper side of the movable plate (65). When the two lifting rods (67) push the two movable plates (65) up to abut against the limit plate (62), the two half cylinders (32) are spliced ​​with each other.

5. The seal detection device according to claim 3, characterized in that: Also includes: The supporting sleeve (5) is fixed horizontally and coaxially on the experimental table (1) and is used to cooperate with the two sliding rods (41) of the piston rod (4).

6. The seal detection device according to claim 1, characterized in that: Also includes: The first ring sleeve (43) is fixed to the loading rod (42) and is used to carry the sealing member; the two second ring sleeves (44) are sleeved on the two sliding rods (41) and cooperate with the assembly groove (324) of the detection cylinder (3) to carry the sealing member, and the sliding rod (41) is formed with a positioning mark (413) corresponding to the installation position of the second ring sleeve (44).

7. The seal detection device according to claim 6, characterized in that: Both ends of the second ring sleeve (44) are tapered; both ends of the assembly groove (324) are formed into tapered surfaces for matching with the second ring sleeve (44).

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