Special-shaped sealing ring mounting device

Abstract

The utility model provides a special-shaped sealing ring installation device which aims at efficiently and accurately installing a special-shaped sealing ring (2) into a piston workpiece (1), a jacking mechanism (8) and an inner supporting expansion mechanism (6) are arranged in the center of a supporting installation plate (3) of the device, a displacement hole movable plate (61) is driven to rotate through a telescopic air cylinder (10), the inner diameter of the special-shaped sealing ring (2) is expanded and enlarged, and the piston workpiece (1) is installed in the piston workpiece (1). And the expansion range of the special-shaped sealing ring (2) is controlled through the adjustment of the adjustable limiting assembly (9). The jacking mechanism (8) drives the special-shaped sealing ring jacking ring (5) through a jacking air cylinder (11) so that the special-shaped sealing ring (2) can be separated from the inner supporting expansion mechanism (6) and installed in a groove of the piston workpiece (1). A penetrating type notch groove (51) is formed in the special-shaped sealing ring top ring (5), the effect that the optical fiber sensor (12) detects the in-place installation condition of the piston workpiece (1) is achieved, and the accuracy and efficiency of sealing ring installation are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a special-shaped sealing ring installation device. Background Art

[0002] With the continuous advancement of industrial technology, the demand for sealing in various special shapes and complex structures is increasing, giving rise to special-shaped sealing rings. Due to the unique shape, size, and material, special-shaped sealing rings offer excellent sealing performance in specific applications. However, traditional manual assembly methods for these sealing rings present difficulties, low efficiency, and high precision requirements. To address these issues, the design of an efficient and precise special-shaped sealing ring installation device is particularly important.

[0003] Existing technology, such as the Chinese invention patent application CN116214420A, discloses a sealing ring assembly tool. While this partially alleviates the drawbacks of manual assembly, it presents the following issues: the installation process primarily relies on the kinematic coordination between a sliding pin and an inclined through-hole or a strip-shaped hole. The magnitude of the frictional resistance during sliding depends on the smoothness of the sliding contact surface. Over extended periods of operation, the frictional resistance increases, requiring a human to provide sufficient driving force to overcome the frictional resistance and ensure the tool's proper operation. Furthermore, the tool requires manual application of a retaining force in both the retracted and extended states, as well as the raised position, relying on the operator's specific operational decisions to determine the correct position. This tool cannot automatically detect whether the sealing ring is correctly assembled, lacks active adjustment functionality, and cannot precisely adjust sealing rings of varying sizes.

[0004] At the same time, the lifting mechanism of the tooling is driven by the hinged movement of the arm at one end to achieve lifting and sliding. The driving force comes from the pressure and tension applied by the operator at one end to the handle, resulting in the driving force of the lifting mechanism not being evenly distributed in the lifting direction. During long-term work, the load on certain components of the lifting mechanism will increase, causing increased wear of these components.

[0005] For high-precision installation of special-shaped seals, uneven force will directly affect their positioning accuracy. The above problems limit the automation and precision improvement of special-shaped seals, so a more efficient and accurate special-shaped seal installation solution is needed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a special-shaped sealing ring installation device which has high assembly efficiency, high installation precision, high automation, strong stability, reduces manual operation and is adaptable to various specifications.

[0007] In order to solve the above technical problems, the utility model provides a special-shaped sealing ring installation device for installing the special-shaped sealing ring into a piston workpiece. The device includes an internal support expansion mechanism, an adjustable limit assembly, and a jacking mechanism.

[0008] Among them, the inner support expansion mechanism is arranged around the central hole of the support mounting plate. The inner support expansion mechanism is mainly driven by a telescopic cylinder to rotate the movable plate of the displacement hole, which is used to change the inner diameter of the special-shaped sealing ring.

[0009] The adjustable limit assembly includes an adjustable limit seat and bolts, which are mounted on the support mounting plate. By adjusting the spacing between the bolt heads, the adjustable limit assembly limits the rotation angle of the movable plate of the position-changing hole and the sliding distance of the internal support sliding mechanism, thereby controlling the expansion range of the special-shaped sealing ring.

[0010] The jacking mechanism is arranged at the lower part of the central hole of the support mounting plate. The jacking mechanism mainly drives the top ring of the special-shaped sealing ring by a jacking cylinder, and is used to install the special-shaped sealing ring after the inner diameter is expanded into the piston workpiece.

[0011] The top ring of the special-shaped sealing ring is provided with a through-type cutout groove, which is used for the optical fiber sensor to detect whether the piston workpiece is installed in place.

[0012] The internal support expansion mechanism comprises multiple internal support sliding mechanisms evenly distributed around the circumference, a movable plate with a position-changing hole, and a fixed guide wheel assembly. Each internal support sliding mechanism comprises a slider, a slide rail, an internal support block, a slider connector, and a guide wheel assembly. Each guide wheel assembly is mounted in a long guide hole in the movable plate with a position-changing hole. A specially curved edge step is provided at the top of each internal support block to conform to the inner diameter of a special-shaped sealing ring and prevent damage during expansion.

[0013] Furthermore, the guide wheel assembly includes a rolling bearing, a pad and an adjustment fixed shaft, the rolling bearing is arranged in the middle of the pad, the rolling bearing contacts and slides with the long guide hole of the position-changing hole movable plate, the adjustment fixed shaft is arranged in the direction of the center axis of the pad and the rolling bearing, and is fastened to the slider connecting seat, and the adjustment fixed shaft manually adjusts the distance between the pad and the position-changing hole movable plate.

[0014] Furthermore, a plurality of the fixed guide wheel assemblies are evenly distributed on the outside of the movable plate of the position-changing hole, wherein the guide wheel assemblies are arranged on a fixed guide seat to limit the rotation of the movable plate of the position-changing hole around the center.

[0015] Furthermore, the jacking mechanism includes a special-shaped sealing ring top ring, a base plate, a jacking plate, a jacking connecting block, and a jacking guide column. The jacking plate is driven by multiple jacking cylinders to move up and down along the jacking guide column. The jacking guide column is used to connect the support mounting plate and the base plate. A piston support column is provided on the upper center of the base plate, and a piston support head is provided on the upper part of the base plate for installing the piston workpiece. The special-shaped sealing ring top ring is supported by multiple jacking connecting blocks evenly distributed around the circumference, and the jacking connecting blocks are all installed on the jacking plate.

[0016] Furthermore, a plurality of the jacking guide columns are evenly distributed around the circumference and arranged between the support mounting plate and the base plate. Each of the jacking guide columns is equipped with a linear bearing seat, and the linear bearing seats are used to support the jacking plate.

[0017] Furthermore, the top ring of the special-shaped sealing ring is in the shape of an annular disc, and the upper inner hole has a large slope chamfer to facilitate the installation of the sealing ring; there is a through-type cut groove on the upper part of the disc, and a plurality of grooves and installation connection grooves are evenly arranged around the center of the lower part. The grooves are convenient for the movement of the internal support sliding mechanism, and the installation connection grooves are used to connect the jacking connection block. There is an annular groove in the middle of the top ring of the special-shaped sealing ring, which is used for the expanded special-shaped sealing ring to disengage from the internal expansion mechanism and reach the sealing ring installation position of the piston workpiece 2. Due to the elastic action of the special-shaped sealing ring 2 itself, it is shrunk into the groove of the piston workpiece 2.

[0018] Furthermore, the optical fiber sensor is arranged on an optical fiber sensor bracket, and the optical fiber sensor bracket is arranged on the upper part of the support mounting plate and is located on both sides of the internal support expansion mechanism. The bracket is arranged in a direction that ensures that the light emitted by the two optical fiber sensors can overlap relatively. The light emitted by the optical fiber sensor passes through the through-type cut groove on the upper part of the top ring of the special-shaped sealing ring, which is used to detect whether the piston workpiece and the special-shaped sealing ring are in place. The optical fiber sensor is electrically connected to other control units.

[0019] The technical effects of this application are:

[0020] 1. The internal expansion mechanism uses a telescopic cylinder to drive the movable plate of the shift hole to rotate, causing the inner diameter of the profiled sealing ring to expand accordingly, effectively solving the difficulties and inefficiencies of traditional manual assembly. The adjustable limit assembly precisely controls the expansion range of the profiled sealing ring by limiting the rotation angle of the movable plate of the shift hole, ensuring installation accuracy. Simultaneously, a lifting cylinder drives the profiled sealing top ring, precisely inserting the expanded profiled sealing ring into the piston workpiece. This process eliminates the manual intervention required in existing technologies and reduces the uncertainty associated with manually determining the position of the seal, resulting in a more stable and reliable installation process.

[0021] 2. Through the synergistic effect of the internal support sliding mechanism and the movable plate with the position-changing hole in the internal support expansion mechanism, as well as the special curved edge step design of the internal support block, precise inner diameter support expansion of special-shaped sealing rings is achieved, effectively reducing damage to the sealing rings during assembly and improving accuracy and installation efficiency. The use of rolling bearings as the sliding surface design of the guide wheel assembly ensures smooth sliding throughout the entire expansion and contraction process, effectively reducing frictional resistance, making the drive smoother and extending the life of the equipment. Multiple fixed guide wheel assemblies arranged on the outside further ensure the stable rotation of the moving parts, avoiding additional wear caused by unstable rotation, thereby significantly improving the operating efficiency and installation accuracy of the equipment.

[0022] 3. In the jacking mechanism, multiple jacking cylinders drive the jacking plate to move up and down along the jacking guide column. The circumferential uniform distribution of the jacking guide column and the matching linear bearing seat ensure the uniform distribution of the jacking force, reduce the burden on specific components, effectively alleviate the wear problem caused by uneven force, and extend the service life of the device.

[0023] 4. By using fiber optic sensors as precise positioning and detection devices, the light emitted by the two fiber optic sensors is aligned, passing through the through-cut groove on the top of the special-shaped sealing ring to directly detect the position of the piston workpiece. This not only ensures a high degree of automation in the installation process, but also eliminates the reliance on manual position judgment during existing assembly techniques, reduces errors caused by manual operation, and improves the accuracy and efficiency of special-shaped sealing ring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a special-shaped sealing ring installation device provided in an embodiment of the present application;

[0025] Figure 2 This is a cross-sectional view of a special-shaped sealing ring installation device provided in an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of an internal support expansion mechanism of a special-shaped sealing ring installation device provided in an embodiment of the present application;

[0027] Figure 4 This is a cross-sectional schematic diagram of a lifting mechanism of a special-shaped sealing ring installation device provided in an embodiment of the present application;

[0028] Figure 5 This is an enlarged cross-sectional schematic diagram of a lifting mechanism of a special-shaped sealing ring installation device provided in an embodiment of the present application;

[0029] Figure 6 This is an axial view of the top ring of a special-shaped sealing ring of a special-shaped sealing ring installation device provided in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Piston workpiece; 2. Special-shaped sealing ring; 3. Support mounting plate; 4. Base plate;

[0032] 5. Special-shaped sealing ring top ring; 51. Through-type cutout groove; 52. Groove; 53. Installation connection groove; 54. Annular groove;

[0033] 6. Internal support expansion mechanism; 61. Positioning hole movable plate; 611. Long guide hole; 62. Internal support sliding mechanism; 621. Slider; 622. Slide rail; 623. Internal support block; 624. Slider connecting seat;

[0034] 7. Guide wheel assembly; 71. Rolling bearing; 72. Spacer; 73. Adjusting and fixing shaft;

[0035] 8. Lifting mechanism; 81. Lifting plate; 82. Lifting connecting block; 83. Lifting guide column; 84. Linear bearing seat;

[0036] 9. Adjustable limit assembly; 91. Adjustable limit seat; 92. Limit block;

[0037] 10. Telescopic cylinder; 101. Cylinder connecting block;

[0038] 11. Lifting cylinder;

[0039] 12. Fiber optic sensor; 121. Fiber optic sensor bracket;

[0040] 13. Piston support column; 131. Piston support head;

[0041] 14. Fixed guide wheel assembly; 141. Fixed guide seat; DETAILED DESCRIPTION

[0042] The following will be combined with the Figures 1 to 6 The following embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

[0043] Example 1

[0044] like Figures 1 and 2The figure shows the overall structure of a special-shaped sealing ring installation device, which is used to install the special-shaped sealing ring 2 into the piston workpiece 1, including an internal support expansion mechanism 6, an adjustable limit assembly 9, and a lifting mechanism 8. The internal support expansion mechanism 6 is arranged around the central hole of the support mounting plate 3. The internal support expansion mechanism 6 is mainly driven by a telescopic cylinder 10 to drive the displacement hole movable plate 61 to rotate. The displacement hole movable plate 61 is provided with a cylinder connecting block 101 and a limit block 92 on its surface. The telescopic cylinder 10 is connected to the displacement hole movable plate 61 by the cylinder connecting block 101, and the internal support sliding mechanism 62 is driven by the displacement hole movable plate 61. Movement can achieve uniform expansion of the inner diameter of the special-shaped sealing ring 2, avoiding deformation or damage of the sealing ring that may be caused by manual installation. The special-shaped sealing ring 2 is usually designed into various shapes of sealing parts according to the specific structure and sealing requirements of the equipment, such as elliptical, Z-shaped, V-shaped, etc. The telescopic cylinder is equipped with a magnetic rod switch. The specific limit position of the magnetic rod switch can be adjusted on the telescopic cylinder according to the operator's needs. The state detection and signal output can be performed on the position or restoration of the telescopic cylinder. At the same time, it is electrically connected with the optical fiber sensor 12 and other control units to achieve continuity in the action sequence.

[0045] The adjustable limit assembly 9 includes an adjustable limit seat 91 and a bolt, which is arranged on the support mounting plate 3. The adjustable limit seat is a concave solid structure with adjustable bolts on both sides. The adjustable limit assembly 9 limits the movable spacing of the limit blocks on the movable plate 61 of the position-changing hole by adjusting the spacing between the bolt heads, thereby further limiting the rotation angle of the movable plate 61 of the position-changing hole and the sliding distance of the inner support sliding mechanism 62, and finally realizing the control of the expansion range of the special-shaped sealing ring 2. The adjustable limit assembly 9 allows the operator to accurately control the expansion range according to the size of the special-shaped sealing ring 2 and the specifications of the piston workpiece 1, ensuring that the special-shaped sealing ring 2 can be smoothly installed in the piston workpiece 1 without excessive expansion.

[0046] The jacking mechanism 8 is arranged at the lower part of the center hole of the support mounting plate 3. The jacking mechanism 8 is mainly driven by the jacking cylinder 11 to drive the jacking plate 81 and the jacking connecting block 82, which finally drives the special-shaped sealing ring top ring 5 to move. When the inner support expansion mechanism 6 expands the inner diameter of the special-shaped sealing ring 2, the upward movement of the special-shaped sealing ring top ring 5 can realize the special-shaped sealing ring 2 to quickly and smoothly detach from the inner support expansion mechanism 6 and be installed in the groove of the piston workpiece 1; the jacking mechanism is equipped with a magnetic rod switch, and the specific limit position of the magnetic rod switch can be adjusted on the jacking mechanism according to the operator's needs. The state detection and signal output of the jacking mechanism in place or restored can be carried out, and at the same time, it is electrically connected and coordinated with the optical fiber sensor 12 and other control units to achieve continuity in the action sequence.

[0047] The top ring 5 of the special-shaped sealing ring is provided with a through-type cutout groove 51, which allows the light of the optical fiber sensor 12 to pass through the through-type cutout groove 51 to directly detect whether the piston workpiece 1 is installed in place, thereby ensuring the automation and accuracy of the entire installation process.

[0048] The internal support expansion mechanism 6 is composed of multiple internal support sliding mechanisms 62, a position-changing hole movable plate 61, and a fixed guide wheel assembly 14. The internal support sliding mechanisms 62 are evenly distributed around the circumference and assembled with the long guide hole 611 below the position-changing hole movable plate 61. Each internal support sliding mechanism 62 includes a slider 621, a slide rail 622, an internal support block 623, a slider connector 624, and a guide wheel assembly 7. These components work together to achieve precise expansion of the inner diameter of the special-shaped sealing ring. Each guide wheel assembly 7 is installed in conjunction with the long guide hole 611 on the position-changing hole movable plate 61. The guide wheel assembly 7 ensures the stability of the position-changing hole movable plate 61 during rotation and prevents the sealing ring installation deviation caused by the swing of the movable plate. The special curved edge step on the top of the internal support block 623 can fit tightly with the inner diameter of the special-shaped sealing ring 2. The edge steps of multiple groups of internal support blocks 623 are evenly arranged to make the special-shaped sealing ring 2 approach a circle when expanding and deforming, avoiding damage to the sealing ring during the expansion process.

[0049] The guide wheel assembly 7 is mainly composed of a rolling bearing 71, a pad 72 and an adjustment fixed shaft 73, wherein the rolling bearing 71 is arranged in the middle of the pad 72. The rolling bearing 71 is used to slide in contact with the long guide hole 611 in the position-changing hole movable plate 61, which can reduce friction resistance during long-term operation. The adjustment fixed shaft 73 is set in the direction of the center axis of the pad 72 and the rolling bearing 71, and is fastened to the slider connecting seat 624. The adjustment fixed shaft 73 enables the operator to manually adjust the distance between the pad 72 and the position-changing hole movable plate 61, accurately control the interaction between the guide wheel assembly 7 and the position-changing hole movable plate 61, and thus affect the friction force when the movable plate rotates. When regular maintenance or replacement of parts in the guide wheel assembly 7 is required, the operator can quickly disassemble and reinstall the adjustment fixed shaft 73, reducing downtime during replacement and improving production efficiency and equipment durability.

[0050] A plurality of fixed guide wheel assemblies 14 are evenly distributed on the outside of the position-changing hole movable plate 61. The fixed guide wheel assembly 14 mainly consists of a guide wheel assembly 7 and a fixed guide seat 141, which is used to limit the rotation of the position-changing hole movable plate 61 around the center. When the internal support expansion mechanism 6 moves, the position-changing hole movable plate 61 rotates around the central axis. The setting of the fixed guide wheel assembly 14 is to further enhance the stability of the position-changing hole movable plate 61 during operation and prevent the movable plate from deviating during rotation, which may cause uneven expansion or even damage to the sealing ring.

[0051] Example 2

[0052] like Figures 4-6 The figure shows the overall structure of a lifting mechanism for a special-shaped sealing ring installation device. The lifting mechanism 8 is mainly composed of a special-shaped sealing ring top ring 5, a bottom plate 4, a lifting plate 81, a lifting connection block 82, and a lifting guide column 83. The lifting plate 81 can be driven by multiple lifting cylinders 11 to move up and down along the lifting guide column 83. The use of multiple lifting cylinders 11 provides a uniform lifting force, reducing the risk of damage to the sealing ring or improper installation due to uneven lifting. The lifting guide column 83 is used to connect and support the installation plate 3 and the bottom plate 4. A piston support column 13 is set at the upper center of the bottom plate 4, and a piston support head 131 is set on the upper part of the bottom plate 4 for installing the piston workpiece 1. The special-shaped sealing ring top ring 5 is supported by multiple lifting connection blocks 82 evenly distributed around the circumference. The lifting connection blocks 82 are all installed on the lifting plate 81.

[0053] Multiple lifting guide columns 83 are evenly distributed around the circumference between the support mounting plate 3 and the base plate 4. Each of the lifting guide columns 83 is equipped with a linear bearing seat 84. The lifting plate 81 is supported by the linear bearing seat 84 and moves up and down along the lifting guide column 83, further improving the stability and guiding accuracy of the lifting mechanism and ensuring the smoothness and accuracy of the lifting process.

[0054] like Figure 6 It shows that the top ring 5 of the special-shaped sealing ring is an annular disc-shaped structure, and the upper inner hole has a large slope chamfer, which is conducive to the rapid installation of the sealing ring; there is a through-type cut groove 51 on the upper part of the disc, and a plurality of grooves 52 and installation connection grooves 53 are evenly arranged around the center of the lower part, wherein the groove 52 provides support for the movement path of the inner support sliding mechanism 62, and the installation connection groove 53 is used to connect the jacking connection block 82. There is an annular groove 54 in the middle of the top ring 5 of the special-shaped sealing ring. The annular groove 54 enables the expanded special-shaped sealing ring 2 to separate from the inner support expansion mechanism 6 and reach the sealing ring installation position of the piston workpiece 1. Due to the elastic action of the special-shaped sealing ring 2 itself, it shrinks and fits into the groove of the piston workpiece 1.

[0055] Example 3

[0056] like Figures 1 and 2 The figure shows the overall structure of a special-shaped sealing ring installation device, in which the optical fiber sensor 12 is arranged on the optical fiber sensor bracket 121, and the optical fiber sensor bracket 121 is arranged on the upper part of the support mounting plate 3, on both sides of the inner support expansion mechanism 6. The bracket is arranged in a direction to ensure that the light emitted by the two optical fiber sensors 12 is relatively overlapped. The light emitted by the optical fiber sensor 12 passes through the through-type cutout groove 51 on the upper part of the special-shaped sealing ring top ring 5, which is used to detect whether the piston workpiece 1 is in place. The optical fiber sensor 12 is electrically connected to other control units, wherein the other control units can be control units linked with other automated equipment, or can be an operating console with buttons and indicator lights, or can be a wireless control unit.

[0057] Working process and principle:

[0058] Step 1: The special-shaped sealing ring 2 is chamfered along the inner ring slope of the special-shaped sealing ring top ring 5 and installed on the top curved edge steps of the multiple inner support blocks 623 in the inner support expansion mechanism 6 in the initial state.

[0059] Step 2: The piston workpiece 1 is installed on the piston support head 131, and the optical fiber sensor 12 detects that the workpiece is in place and feeds back to other control units. The telescopic cylinder 10 drives the movable plate 61 of the displacement hole to rotate and drive the internal support expansion mechanism 6 to expand, so that the inner diameter of the special-shaped sealing ring 2 is expanded. The magnetic rod switch of the telescopic cylinder 10 itself detects the position status and feeds back to other control units.

[0060] Step 3: The lifting cylinder 11 drives the top ring 5 of the special-shaped sealing ring to lift, and drives the special-shaped sealing ring 2 in the internal annular groove 54 thereof, so as to separate from the inner support expansion mechanism 6 and reach the sealing ring installation position of the piston workpiece 1. The special-shaped sealing ring 2 shrinks by its own recovery effect and is installed in the groove of the piston workpiece 1. The magnetic rod switch of the lifting cylinder 11 itself detects the position status and feeds back to other control units.

[0061] Step 4: The lifting mechanism 8 is reset, and another optical fiber sensor 12 detects that the special-shaped sealing ring 2 is installed in place, and feeds back to other control units. The operator or other automated linkage equipment (robot, manipulator, fixture, etc.) removes the piston workpiece with the sealing ring. The optical fiber sensor 12 detects that there is no workpiece, feeds back to other control units, and the internal support expansion mechanism is reset.

[0062] Finally, it should be noted that unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0063] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0064] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0065] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0066] In the description of the embodiments of the present application, the technical terms "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "circumferential", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0067] In the description of the embodiments of the present application, unless otherwise clearly specified or limited, technical terms such as "set," "provided with," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, integration, or mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connections between two elements or interactions between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0068] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A special-shaped sealing ring installation device for installing a special-shaped sealing ring (2) into a piston workpiece (1), characterized in that: include: An internal support expansion mechanism (6), the internal support expansion mechanism (6) is arranged around the central hole of the support mounting plate (3), and the internal support expansion mechanism (6) is driven by a telescopic cylinder (10) to rotate the movable plate (61) of the variable hole, so as to change the inner diameter of the special-shaped sealing ring (2); An adjustable limit assembly (9), the adjustable limit assembly (9) comprising an adjustable limit seat (91) and a bolt, which is arranged on the support mounting plate (3), and the adjustable limit assembly (9) limits the rotation angle of the variable hole movable plate (61) and the sliding distance of the inner support sliding mechanism (62) by adjusting the spacing between the bolt heads, so as to control the diameter variation range of the special-shaped sealing ring (2); A lifting mechanism (8), the lifting mechanism (8) is arranged at the lower part of the central hole of the support mounting plate (3), and the lifting mechanism (8) drives the special-shaped sealing ring top ring (5) by the lifting cylinder (11) to install the special-shaped sealing ring (2) after the inner diameter is expanded into the piston workpiece (1); The top ring (5) of the special-shaped sealing ring is provided with a through-type cutout groove (51) for the optical fiber sensor (12) to detect whether the piston workpiece (1) is installed in place; The inner support expansion mechanism (6) includes a plurality of inner support sliding mechanisms (62) uniformly distributed around the circumference, a position-changing hole movable plate (61), and a fixed guide wheel assembly (14). Each of the inner support sliding mechanisms (62) includes a slider (621), a slide rail (622), an inner support block (623), a slider connecting seat (624), and a guide wheel assembly (7). Each of the guide wheel assemblies (7) is mounted in conjunction with the long guide hole (611) on the position-changing hole movable plate (61). A curved edge step is provided on the top of each inner support block (623) to fit the inner diameter of the special-shaped sealing ring to avoid damage during expansion.

2. The special-shaped sealing ring installation device according to claim 1, characterized in that: The guide wheel assembly (7) includes a rolling bearing (71), a cushion block (72) and an adjustment fixing shaft (73), wherein the rolling bearing (71) is arranged in the middle of the cushion block (72), and the rolling bearing (71) contacts and slides with the long guide hole (611) of the position-changing hole movable plate (61), and the adjustment fixing shaft (73) is arranged in the direction of the central axis of the cushion block (72) and the rolling bearing (71), and is fastened to the slider connecting seat (624), and the adjustment fixing shaft (73) manually adjusts the distance between the cushion block (72) and the position-changing hole movable plate (61).

3. The special-shaped sealing ring installation device according to claim 1, characterized in that: A plurality of fixed guide wheel assemblies (14) are evenly distributed outside the position-changing hole movable plate (61), wherein the guide wheel assembly (7) is arranged on the fixed guide seat (141) and is used to limit the rotation of the position-changing hole movable plate (61) around the center.

4. The special-shaped sealing ring installation device according to claim 1, characterized in that: The lifting mechanism (8) includes a special-shaped sealing ring top ring (5), a bottom plate (4), a lifting plate (81), a lifting connection block (82), and a lifting guide column (83). The lifting plate (81) is driven by a plurality of lifting cylinders (11) to move up and down along the lifting guide column (83). The lifting guide column (83) is used to connect the support mounting plate (3) and the bottom plate (4). A piston support column (13) is provided at the upper center of the bottom plate (4), and a piston support head (131) is provided at the upper part thereof for mounting the piston workpiece (1). The special-shaped sealing ring top ring (5) is supported by a plurality of lifting connection blocks (82) uniformly distributed around the circumference. The lifting connection blocks (82) are all mounted on the lifting plate (81).

5. The special-shaped sealing ring installation device according to claim 4, characterized in that: A plurality of the jacking guide columns (83) are evenly distributed around the circumference and arranged between the support mounting plate (3) and the base plate (4), and each of the jacking guide columns (83) is equipped with a linear bearing seat (84), and the linear bearing seat (84) is used to support the jacking plate (81).

6. The special-shaped sealing ring installation device according to claim 4, characterized in that: The top ring (5) of the special-shaped sealing ring is in the shape of an annular disc, and the upper inner hole has a large slope chamfer to facilitate the installation of the sealing ring; the upper part of the disc has a through-type cutout groove (51), and the lower part has a plurality of grooves (52) and installation connection grooves (53) evenly arranged around the center, the grooves (52) facilitate the movement of the internal support sliding mechanism (62), and the installation connection grooves (53) are used to connect the jacking connection block (82). The middle of the top ring (5) of the special-shaped sealing ring is provided with an annular groove (54) for lifting the special-shaped sealing ring after the internal support of the internal support expansion mechanism (6) is expanded.

7. The special-shaped sealing ring installation device according to claim 1, characterized in that: The optical fiber sensor (12) is arranged on an optical fiber sensor bracket (121), and the optical fiber sensor bracket (121) is arranged on the upper part of the support mounting plate (3) and is located on both sides of the inner support expansion mechanism (6). The bracket is arranged in a direction to ensure that the light emitted by the two optical fiber sensors (12) is relatively overlapped. The light emitted by the optical fiber sensor passes through the through-type cutout groove (51) on the upper part of the special-shaped sealing ring top ring (5) to detect whether the piston workpiece (1) and the special-shaped sealing ring (2) are in place. The optical fiber sensor (12) is electrically connected to the control unit.

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