A viscous damper convenient for on-site replacement maintenance

Abstract

The utility model relates to viscous damper technical field, and disclose a kind of viscous damper of convenient field replacement maintenance, comprising: cylinder group and piston rod group, the piston rod group is set to the upper end of cylinder group, the outside rotation of piston rod group is connected with carousel, the outside welding of cylinder group has locking mechanism, the bottom both sides of carousel are provided with locking arm, the outside of locking arm is equipped with locking groove, the locking mechanism includes fixed disc, the top of fixed disc is equipped with vertical slot, the outside sliding connection of fixed disc has slide, the bottom rotation of slide is connected with connecting rod.The viscous damper of convenient field replacement maintenance, quickly remove the restriction to carousel, finally realize the separation or spacing removal of cylinder group and piston rod group, entire operating process does not need to lend complex tool, operation step is simple and easy to understand, can be fully adapted to the actual demand of field maintenance scene, improves the efficiency of field replacement maintenance.

Description

Technical Field

[0001] This utility model relates to the field of viscous damper technology, specifically a viscous damper that is convenient for on-site replacement and maintenance. Background Technology

[0002] Viscous dampers are widely used in wind and earthquake resistance of building structures, vibration control of mechanical equipment, and bridge engineering. They mainly generate damping force through the relative motion of cylinder and piston rod to achieve vibration reduction and energy dissipation. During long-term use, due to wear, aging and other factors, they need to be disassembled, repaired and replaced on-site to ensure the vibration reduction performance of the overall system.

[0003] When not in operation, the parts are prone to loosening, making it difficult to maintain the stability of the overall structure. The components between the cylinder assembly and the piston rod assembly cannot achieve a continuous tight engagement, which makes them prone to relative displacement during disassembly and maintenance. This greatly increases the difficulty of on-site operation, reduces the overall efficiency of on-site replacement and maintenance, and may even lead to additional faults during maintenance due to the complexity of the operation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a viscous damper that facilitates on-site replacement and maintenance. This addresses the technical problem that the components between the cylinder assembly and piston rod assembly cannot achieve a continuous and tight engagement, leading to relative displacement during disassembly and maintenance. This significantly increases the difficulty of on-site operation, reduces the overall efficiency of on-site replacement and maintenance, and may even cause additional malfunctions during maintenance due to the complexity of the operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a viscous damper that is convenient for on-site replacement and maintenance, comprising: a cylinder assembly and a piston rod assembly, wherein the piston rod assembly is disposed at the upper end of the cylinder assembly, a turntable is rotatably connected to the outside of the piston rod assembly, a locking mechanism is welded to the outside of the cylinder assembly, locking arms are provided on both sides of the bottom of the turntable, a locking groove is provided on the outside of the locking arms, and the locking mechanism includes a fixed plate, wherein a vertical groove is provided on the top of the fixed plate; The fixed plate is slidably connected to the outside of the fixed plate, and the bottom of the sliding plate is rotatably connected to the connecting rod. A first spring is connected between the sliding plate and the fixed plate. A hollow column is sleeved on the outside of the fixed plate. A sliding arm is slidably connected to the inner cavity of the hollow column. The upper end of the sliding arm is rotatably connected to the connecting rod. A hollow plate is connected to the bottom of the sliding arm. A trapezoidal locking block is slidably connected to the inner cavity of the hollow plate. The trapezoidal locking block is adapted to the locking groove. A second spring is connected between the trapezoidal locking block and the hollow plate and between the hollow column and the sliding arm. The turntable can rotate to precisely align the locking arm with the interior of the vertical slot connected to the hollow plate, providing the prerequisite for locking the cylinder assembly and piston rod assembly; the first spring can be reset when the slide plate is not pressed down, ensuring that the locking mechanism remains stable when not in operation; the second spring can push the trapezoidal block to tightly engage with the locking slot, thereby stably locking the distance between the cylinder assembly and piston rod assembly, preventing relative displacement between the two during disassembly and maintenance, greatly facilitating on-site disassembly, maintenance and replacement of the cylinder assembly; it can also assist the sliding arm in resetting, ensuring the fitting accuracy between the hollow plate and the vertical slot; When the limit needs to be released, simply press down the sliding plate, and the sliding arm will move through the connecting rod, thereby causing the hollow plate and trapezoidal block to disengage from the locking groove, releasing the restriction on the turntable, and finally realizing the separation of the cylinder group and piston rod group or the release of the limit. The whole operation process is simple and convenient, requiring no complicated tools, and is suitable for on-site maintenance scenarios.

[0006] Preferably, the cylinder assembly includes a cylinder barrel, the inner cavity of which is provided with a damping hole, and the damping hole is slidably connected to the piston rod assembly. A sealing mechanism is provided between the damping hole and the piston rod assembly, and the inner cavity of the cylinder assembly is filled with a damping medium. The sliding fit between the damping orifice and the piston rod assembly, combined with the damping medium filling the cylinder cavity, is key to realizing the core energy dissipation function of the viscous damper. When the structure is subjected to external forces, the piston rod assembly slides along the damping orifice, and the damping medium generates viscous force through the damping orifice, which can effectively buffer vibration, absorb energy, and ensure structural stability. The sealing mechanism can effectively prevent the damping medium from leaking from the fit gap between the damping orifice and the piston rod assembly, avoiding the decline or failure of damping performance due to medium leakage, ensuring that the cylinder assembly can maintain a reliable damping effect before and after maintenance and replacement, and extending the overall service life of the damper.

[0007] Preferably, the piston rod assembly includes a piston rod that is slidably connected to the cylinder assembly. A sealing sleeve is fitted over the piston rod, and the bottom of the sealing sleeve is connected to the upper end of the cylinder assembly. The slidable connection between the piston rod and the cylinder assembly is the basis for the damper to achieve energy dissipation through extension and contraction. The sealing sleeve fitted over the piston rod can form a double sealing protection with the sealing mechanism inside the cylinder assembly, further enhancing the sealing performance between the piston rod and the cylinder assembly and significantly reducing the risk of damping medium leakage. The sealing sleeve also guides and protects the piston rod, preventing wear caused by displacement during sliding or affecting sliding accuracy due to external dust and impurities. This ensures that the piston rod assembly and cylinder assembly always maintain a good fit, providing stable structural support for subsequent replacement and maintenance of the cylinder assembly.

[0008] Preferably, there are four sets of vertical grooves and two sets of hollow plates. The two sets of hollow plates are slidably connected to the vertical grooves on the left and right sides of the fixed plate, and the fixed plate is connected to the cylinder group. Four sets of vertical slots are evenly distributed on the top of the fixed plate, allowing the turntable to be locked at multiple angles, improving operational flexibility. Workers can adjust the rotation angle of the turntable according to the size of the on-site maintenance space and their operating habits, quickly aligning the locking arm with the vertical slot and reducing operation time. Two sets of hollow plates are slidably connected to the vertical slots on the left and right sides of the fixed plate, respectively, enabling simultaneous locking of the locking arm from both sides. This makes the locking mechanism more evenly stressed, avoiding stress concentration caused by locking on one side, effectively improving the structural stability of the cylinder group and piston rod group after locking, ensuring that the two will not move relative to each other during disassembly and maintenance, and ensuring the safety of maintenance operations.

[0009] Preferably, the fixed plate has an annular groove on its outer side, which is slidably connected to the slide plate. A first spring is evenly arranged between the annular groove and the slide plate. The annular groove provides a stable sliding trajectory for the slide plate, which can effectively limit the movement direction of the slide plate and ensure that the slide plate will not deviate or get stuck during the pressing and resetting process. This ensures that the connecting rod can accurately drive the sliding arm to move and ensures the smoothness of locking and unlocking operations. The evenly distributed first spring ensures that the restoring force on the slide plate is evenly distributed, preventing the slide plate from tilting or jamming due to uneven spring force. At the same time, in the non-operating state, the even spring force can keep the slide plate stably in the initial position, preventing the trapezoidal block from accidentally disengaging from the locking groove and ensuring the reliability of the locking state of the cylinder assembly and piston rod assembly.

[0010] Preferably, a lifting ring is provided at the opposite end of the cylinder assembly and the piston rod assembly, and a sealing ring is provided inside the hole of the lifting ring. The turntable is connected to the outside of the piston rod assembly through a bearing. The lifting rings greatly facilitate on-site handling operations. Workers can easily transfer disassembled cylinder assemblies or piston rod assemblies using the lifting rings in conjunction with hoisting equipment, effectively reducing the labor intensity of manual handling and improving maintenance and replacement efficiency. The sealing rings inside the lifting ring holes prevent rainwater, dust, and other impurities from entering the lifting ring, avoiding damage due to rust, extending its service life, and ensuring the safety of the hoisting process. The turntable is connected to the piston rod assembly externally through bearings, which can significantly reduce the friction between the turntable and the piston rod assembly when the turntable rotates, making the turntable rotate more smoothly and effortlessly, and allowing workers to quickly align the locking arm with the vertical slot, further improving the convenience of on-site operation.

[0011] Compared with the prior art, this utility model provides a viscous damper that is convenient for on-site replacement and maintenance, and has the following beneficial effects: This viscous damper, which is convenient for on-site replacement and maintenance, achieves alignment of the locking arm with the vertical groove through the cooperation of the turntable and the locking arm. The first spring in the locking mechanism can automatically drive the slide plate to reset when it is not pressed down, so that the locking mechanism can maintain a stable state and avoid the overall structural stability being affected by the loosening of the mechanism when not in operation.

[0012] The second spring continuously pushes the trapezoidal locking block to firmly engage in the locking groove, thereby firmly locking the distance between the cylinder assembly and the piston rod assembly. This prevents relative displacement during disassembly and maintenance, significantly reducing the difficulty of on-site operations and making the disassembly, maintenance, and replacement of the cylinder assembly more convenient. It also assists in the return of the sliding arm, ensuring that the hollow plate and the vertical groove always maintain good fit accuracy. When the limit needs to be released, simply apply downward pressure to the slide plate, and the sliding arm will move through the linkage transmission, thereby causing the hollow plate and trapezoidal block to simultaneously disengage from the locking groove, quickly releasing the restriction on the turntable, and finally achieving the separation of the cylinder group and piston rod group or the release of the limit. The entire operation process does not require the use of complex tools, and the operation steps are simple and easy to understand, which can fully adapt to the actual needs of on-site maintenance scenarios and improve the efficiency of on-site replacement and maintenance. Attached Figure Description

[0013] Figure 1 This is a front view of the present utility model; Figure 2 This is a plan view of the present invention; Figure 3 This is a schematic diagram of the external appearance of the turntable of this utility model; Figure 4 This is a partial sectional view of the locking mechanism of this utility model; Figure 5 This is a schematic diagram of the external shape of the sliding arm of this utility model.

[0014] In the diagram: 1. Cylinder assembly; 11. Lifting ring; 2. Piston rod assembly; 3. Turntable; 31. Locking arm; 32. Locking groove; 4. Locking mechanism; 41. Fixed plate; 42. Vertical groove; 43. Slide plate; 44. Connecting rod; 45. First spring; 46. Hollow column; 47. Slide arm; 48. Second spring; 49. Hollow plate; 410. Trapezoidal block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This utility model provides a technical solution, please refer to Figure 1 and Figure 2A viscous damper that is easy to replace and maintain on site includes: a cylinder assembly 1 and a piston rod assembly 2. The piston rod assembly 2 is located at the upper end of the cylinder assembly 1. A turntable 3 is rotatably connected to the outside of the piston rod assembly 2. A locking mechanism 4 is welded to the outside of the cylinder assembly 1. Locking arms 31 are provided on both sides of the bottom of the turntable 3. Locking grooves 32 are opened on the outside of the locking arms 31. The locking mechanism 4 includes a fixed plate 41. A vertical groove 42 is opened on the top of the fixed plate 41. Please see Figure 3 , Figure 4 and Figure 5 A sliding plate 43 is slidably connected to the outside of the fixed plate 41. A connecting rod 44 is rotatably connected to the bottom of the sliding plate 43. A first spring 45 is connected between the sliding plate 43 and the fixed plate 41. A hollow column 46 is sleeved on the outside of the fixed plate 41. A sliding arm 47 is slidably connected to the inner cavity of the hollow column 46. The upper end of the sliding arm 47 is rotatably connected to the connecting rod 44. A hollow plate 49 is connected to the bottom of the sliding arm 47. A trapezoidal block 410 is slidably connected to the inner cavity of the hollow plate 49. The trapezoidal block 410 is adapted to the locking groove 32. A second spring 48 is connected between the trapezoidal block 410 and the hollow plate 49 and between the hollow column 46 and the sliding arm 47. The turntable 3 can rotate to precisely align the locking arm 31 with the interior of the vertical groove 42 connected to the hollow plate 49, providing the prerequisite for locking the cylinder assembly 1 and the piston rod assembly 2; the first spring 45 can be reset when the slide plate 43 is not pressed down, ensuring that the locking mechanism 4 remains stable when not in operation; the second spring 48 can push the trapezoidal block 410 to tightly engage with the locking groove 32, thereby stably locking the distance between the cylinder assembly 1 and the piston rod assembly 2, preventing relative displacement between the two during disassembly and maintenance, greatly facilitating the disassembly, maintenance and replacement of the cylinder assembly 1 on site; it can also assist the slide arm 47 in resetting, ensuring the fitting accuracy between the hollow plate 49 and the vertical groove 42; When the limit needs to be released, simply press down the slide plate 43, and the sliding arm 47 will move through the connecting rod 44, thereby causing the hollow plate 49 and the trapezoidal block 410 to disengage from the locking groove 32, releasing the restriction on the turntable 3, and finally realizing the separation of cylinder group 1 and piston rod group 2 or the release of the limit. The whole operation process is simple and convenient, requiring no complicated tools, and is suitable for on-site maintenance scenarios.

[0017] The cylinder assembly 1 includes a cylinder barrel, the inner cavity of which is provided with a damping hole, and the damping hole is slidably connected to the piston rod assembly 2. A sealing mechanism is provided between the damping hole and the piston rod assembly 2, and the inner cavity of the cylinder assembly 1 is filled with a damping medium. The sliding fit between the damping orifice and the piston rod assembly 2, combined with the damping medium filling the inner cavity of the cylinder assembly 1, is the key to realizing the core energy dissipation function of the viscous damper. When the structure is subjected to external forces, the piston rod assembly 2 slides along the damping orifice, and the damping medium generates viscous force through the damping orifice, which can effectively buffer vibration, absorb energy, and ensure structural stability. The sealing mechanism can effectively prevent the damping medium from leaking from the fit gap between the damping orifice and the piston rod assembly 2, avoiding the decline or failure of damping performance due to medium leakage, ensuring that the cylinder assembly 1 can maintain a reliable damping effect before and after maintenance and replacement, and extending the overall service life of the damper.

[0018] The piston rod assembly 2 includes a piston rod that is slidably connected to the cylinder assembly 1. A sealing sleeve is fitted over the piston rod, and the bottom of the sealing sleeve is connected to the upper end of the cylinder assembly 1. The slidable connection between the piston rod and the cylinder assembly 1 is the basis for the damper to achieve energy dissipation through expansion and contraction. The sealing sleeve fitted over the piston rod can form a double sealing protection with the sealing mechanism inside the cylinder assembly 1, further enhancing the sealing performance between the piston rod and the cylinder assembly 1 and significantly reducing the risk of damping medium leakage. The sealing sleeve also guides and protects the piston rod, preventing wear caused by displacement during sliding or affecting sliding accuracy due to external dust and impurities. This ensures that the piston rod assembly 2 and cylinder assembly 1 always maintain a good fit, providing stable structural support for subsequent replacement and maintenance of cylinder assembly 1.

[0019] There are four sets of vertical grooves 42 and two sets of hollow plates 49. The two sets of hollow plates 49 are slidably connected to the vertical grooves 42 on the left and right sides of the fixed plate 41. The fixed plate 41 is connected to the cylinder group 1. Four sets of vertical slots 42 are evenly distributed on the top of the fixed plate 41, which allows the turntable 3 to be locked at multiple angles, improving operational flexibility. Workers can adjust the rotation angle of the turntable 3 according to the size of the on-site maintenance space and their operating habits, and quickly align the locking arm 31 with the vertical slot 42, reducing operation time. Two sets of hollow plates 49 are slidably connected to the vertical slots 42 on the left and right sides of the fixed plate 41, respectively, which can lock the locking arm 31 simultaneously from both sides, making the locking mechanism 4 more evenly stressed, avoiding stress concentration caused by locking on one side, effectively improving the structural stability of the cylinder group 1 and the piston rod group 2 after locking, ensuring that the two will not move relative to each other during disassembly and maintenance, and ensuring the safety of maintenance operations.

[0020] The fixed plate 41 has an annular groove on its outside, which is slidably connected to the slide plate 43. A first spring 45 is evenly arranged between the annular groove and the slide plate 43. The annular groove provides a stable sliding trajectory for the slide plate 43, which can effectively limit the movement direction of the slide plate 43 and ensure that the slide plate 43 will not deviate or get stuck during the pressing and resetting process. This ensures that the connecting rod 44 can accurately drive the sliding arm 47 to move, and ensures the smoothness of locking and unlocking operations. The evenly distributed first spring 45 can make the reset force on the slide plate 43 evenly distributed, avoiding the slide plate 43 from tilting or jamming due to uneven spring force. At the same time, in the non-operation state, the uniform spring force can keep the slide plate 43 stably in the initial position, preventing the trapezoidal block 410 from accidentally disengaging from the locking groove 32, and ensuring the reliability of the locking state between the cylinder group 1 and the piston rod group 2.

[0021] Both cylinder assembly 1 and piston rod assembly 2 are provided with lifting rings 11 at their far ends. The holes of the lifting rings 11 are provided with sealing rings. The turntable 3 is connected to the outside of piston rod assembly 2 through bearings. The lifting ring 11 greatly facilitates on-site handling operations. Workers can easily transfer the disassembled cylinder assembly 1 or piston rod assembly 2 using the lifting ring 11 in conjunction with lifting equipment, effectively reducing the labor intensity of manual handling and improving maintenance and replacement efficiency. The sealing ring inside the hole of the lifting ring 11 can prevent rainwater, dust and other impurities from entering the interior of the lifting ring 11, avoiding damage to the lifting ring 11 due to rust, extending its service life and ensuring the safety of the lifting process. The turntable 3 is externally connected to the piston rod assembly 2 through bearings, which can greatly reduce the friction between the turntable 3 and the piston rod assembly 2 when the turntable 3 rotates, making the turntable 3 rotate more smoothly and effortlessly, and making it easier for workers to quickly align the locking arm 31 with the vertical groove 42, further improving the convenience of on-site operation.

[0022] When the cylinder assembly 1 needs to be replaced or repaired, the turntable 3 is rotated so that the locking arm 31 is aligned with the inside of the vertical groove 42 connected to the hollow plate 49. The piston rod assembly 2 is retracted into the inside of the cylinder assembly 1, and the trapezoidal block 410 is inserted into the inside of 33 to lock the distance between the cylinder assembly 1 and the piston rod assembly 2. This facilitates the disassembly, repair, and replacement of the cylinder assembly 1 and the piston rod assembly 2. When it is necessary to release the limit between the cylinder assembly 1 and the piston rod assembly 2, the slide plate 43 is pressed down, and the sliding arm 47 is driven to move through the connecting rod 44. This causes the hollow plate 49 and the trapezoidal block 410 to disengage from the locking groove 32, thereby releasing the restriction on the turntable 3. Finally, the cylinder assembly 1 and the piston rod assembly 2 are separated or the limit is released.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A viscous damper that is easy to replace and maintain on-site, comprising: A cylinder assembly (1) and a piston rod assembly (2), wherein the piston rod assembly (2) is located at the upper end of the cylinder assembly (1), characterized in that: a turntable (3) is rotatably connected to the outside of the piston rod assembly (2), a locking mechanism (4) is welded to the outside of the cylinder assembly (1), a locking arm (31) is provided on both sides of the bottom of the turntable (3), a locking groove (32) is provided on the outside of the locking arm (31), and the locking mechanism (4) includes a fixed plate (41), and a vertical groove (42) is provided on the top of the fixed plate (41). The fixed disk (41) is slidably connected to a sliding plate (43), and the bottom of the sliding plate (43) is rotatably connected to a connecting rod (44). A first spring (45) is connected between the sliding plate (43) and the fixed disk (41). A hollow column (46) is sleeved on the outside of the fixed disk (41). A sliding arm (47) is slidably connected to the inner cavity of the hollow column (46). The upper end of the sliding arm (47) is rotatably connected to the connecting rod (44). A hollow plate (49) is connected to the bottom of the sliding arm (47). A trapezoidal locking block (410) is slidably connected to the inner cavity of the hollow plate (49). The trapezoidal locking block (410) is adapted to the locking groove (32). A second spring (48) is connected between the trapezoidal locking block (410) and the hollow plate (49) and between the hollow column (46) and the sliding arm (47).

2. The viscous damper that is convenient for on-site replacement and maintenance according to claim 1, characterized in that: The cylinder assembly (1) includes a cylinder barrel, the inner cavity of which is provided with a damping hole, and the damping hole is slidably connected to the piston rod assembly (2). A sealing mechanism is provided between the damping hole and the piston rod assembly (2), and the inner cavity of the cylinder assembly (1) is filled with a damping medium.

3. A viscous damper that is convenient for on-site replacement and maintenance according to claim 2, characterized in that: The piston rod assembly (2) includes a piston rod that is slidably connected to the cylinder assembly (1). A sealing sleeve is fitted around the piston rod, and the bottom of the sealing sleeve is connected to the upper end of the cylinder assembly (1).

4. A viscous damper that is convenient for on-site replacement and maintenance according to claim 1, characterized in that: There are four sets of vertical grooves (42) and two sets of hollow plates (49). The two sets of hollow plates (49) are slidably connected to the vertical grooves (42) on the left and right sides of the fixed plate (41). The fixed plate (41) is connected to the cylinder group (1).

5. A viscous damper that is convenient for on-site replacement and maintenance according to claim 1, characterized in that: The fixed plate (41) has an annular groove on its outside. The annular groove is slidably connected to the slide plate (43). A first spring (45) is evenly arranged between the annular groove and the slide plate (43).

6. A viscous damper that is convenient for on-site replacement and maintenance according to claim 1, characterized in that: The cylinder assembly (1) and the piston rod assembly (2) are each provided with a lifting ring (11) at the opposite ends. A sealing ring is provided inside the hole of the lifting ring (11). The turntable (3) is connected to the outside of the piston rod assembly (2) through a bearing.

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