Protective hydraulic damper

Abstract

The utility model discloses a protective hydraulic damper which comprises a hydraulic damper body, a piston rod is connected to the upper portion of the hydraulic damper body in a sliding mode, a pair of protective covers are symmetrically installed on the left side and the right side of the outside of the hydraulic damper body and fixedly connected, semi-ring grooves are formed in the inner walls of the upper portions of the protective covers, and side grooves are formed in the upper ends of the inner walls of the semi-ring grooves on the left side. A clamping hole is formed in the upper end of the inner wall of the right semi-ring groove, and a connecting ring is inserted between the upper portions of the protective covers and located on the outer side of the piston rod. When the telescopic corrugated pipe is connected with the piston rod and the protective cover, only the connecting ring needs to be inserted between the upper portions of the protective cover, meanwhile, the side blocks are aligned to be inserted into the side grooves, the side blocks can move into the semi-ring grooves, then the connecting ring is rotated by 180 degrees, the side blocks and the side grooves are staggered at the moment, clamping beads of the side blocks are inserted into clamping holes, and the telescopic corrugated pipe is connected with the piston rod. In this way, only half-circle rotation is needed for installation, multiple circles of rotation are not needed, and installation of the telescopic corrugated pipe and the dustproof cover is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic dampers, in particular to a protective hydraulic damper. Background Art

[0002] The hydraulic damper is a functional structural component of the pipe support and hanger. It is a hydraulic feed speed control device that can freely adjust the cylinder feed speed from low speed to high speed within the desired range. The hydraulic damper is widely used in thermal power plants, steel mills, etc.

[0003] At present, a utility model with patent document number CN221591617U discloses a hydraulic damper with a dust-proof mechanism. By arranging a dust cover on the outside of the hydraulic damper and a telescopic bellows on the outside of the piston rod, the hydraulic damper and the piston rod can be protected from dust. When the piston rod is moving, the telescopic bellows can drive the telescopic bellows to retract and retract synchronously. In this way, the telescopic bellows can protect the piston rod from dust while not hindering the use of the piston rod, thereby improving the service life of the hydraulic damper in thermal power plants, steel mills and other sites. However, the telescopic bellows of the hydraulic damper is connected to the dust cover by a threaded rotation connection, so the connection between the telescopic bellows and the dust cover requires multiple rotations, so the installation is cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a protective hydraulic damper to solve the problems raised in the above background technology.

[0005] A protective hydraulic damper includes a hydraulic damper, wherein the upper part of the hydraulic damper is slidingly connected to a piston rod, and a pair of protective covers are symmetrically installed on the left and right sides of the outside of the hydraulic damper, and the protective covers are fixedly connected to each other, and a semi-annular groove is opened on the inner wall of the upper part of the protective cover, and a side groove is opened on the upper end of the inner wall of the semi-annular groove on the left side, and a clamping hole is opened on the upper end of the inner wall of the semi-annular groove on the right side, and a connecting ring is inserted between the upper parts of the protective covers, and the connecting ring is located on the outside of the piston rod, and a side block is fixed on the lower side of the left end of the connecting ring, and the side block is inserted into the side groove, and the side block is slidably connected to the semi-annular groove, and the upper end of the side block is elastically connected with a clamping bead, and the clamping bead is inserted into the clamping hole, and a telescopic bellows is fixed on the upper end of the connecting ring, and the telescopic bellows is located on the outside of the piston rod and fixed to the upper part of the piston rod.

[0006] Furthermore, an interface is provided on the lower right side of the hydraulic damper, and a positioning hole is provided on the lower right side of the right end of the protective cover on the right side, and the interface is plugged into the positioning hole.

[0007] Furthermore, fixing plates are fixed at both the front and rear ends of the protective cover, fixing nuts are fixed on the upper and lower sides of the end of the fixing plate away from each other, bolts are threadedly connected between the fixing nuts on the same horizontal line on the left and right, and a synchronous wheel assembly is installed between the right parts of the bolts.

[0008] Further, the synchronous pulley assembly includes a synchronous belt and two synchronous pulleys. The synchronous pulleys are fixedly corresponding to the right ends of the bolts one by one, and the synchronous belt is connected between the synchronous pulleys.

[0009] Further, a spring groove is formed at the upper end of the side block. The clamping bead is located inside the spring groove, and a spring is fixed between the clamping bead and the bottom of the spring groove.

[0010] Further, a lower connecting plate is fixed at the end of the telescopic bellows, and an upper connecting plate is fixed on the upper side of the piston rod. A plurality of stud bolts are uniformly and annularly fixed on the outer side of the upper end of the lower connecting plate. The upper part of the stud bolts penetrates through the upper connecting plate movably, and a nut is threadedly connected to the outer side of the stud bolts. The nut is located above the upper connecting plate.

[0011] Advantages of the present utility model: When connecting the telescopic bellows with the piston rod and the protective cover, it is only necessary to insert the connecting ring between the upper parts of the protective cover, and at the same time align the side block with the side groove and insert it. In this way, the side block will move into the semi-ring groove, and then the connecting ring is rotated by 180 degrees. At this time, the side block will be misaligned with the side groove, and the clamping bead of the side block will be inserted into the clamping hole, so that the connecting ring cannot be lifted out between the upper parts of the protective cover. In this way, the installation only needs to be rotated half a turn, without rotating multiple turns, so the installation of the telescopic bellows and the dust-proof cover is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the whole of the present utility model;

[0013] Figure 2 is a schematic diagram of the telescopic bellows and the protective cover of the present utility model being disassembled;

[0014] Figure 3 is a schematic diagram of the hydraulic damper of the present utility model;

[0015] Figure 4 is a schematic diagram of the protective cover of the present utility model being disassembled;

[0016] Figure 5 is a schematic cross-sectional view of the connecting ring of the present utility model.

[0017] In the figure: 1 - hydraulic damper, 2 - piston rod, 3 - protective cover, 4 - fixing plate, 5 - positioning hole, 6 - fixing nut, 7 - bolt, 8 - synchronous pulley assembly, 9 - connecting ring, 10 - telescopic bellows, 11 - lower connecting plate, 12 - upper connecting plate, 13 - side block, 14 - semi-ring groove, 15 - side groove, 16 - clamping hole, 17 - spring groove, 18 - spring, 19 - clamping bead. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Please refer to Figures 1 - 5, a protective hydraulic damper, comprising a hydraulic damper 1, a piston rod 2 is slidably connected to the upper part of the hydraulic damper 1, a pair of protective covers 3 are symmetrically installed on the left and right sides of the outside of the hydraulic damper 1, the protective covers 3 are fixedly connected between them, an interface is provided on the lower side of the right part of the hydraulic damper 1, and a positioning hole 5 is opened on the lower side of the right end of the right protective cover 3, the interface is inserted into the positioning hole 5. When installing the protective cover 3 and the hydraulic damper 1, first insert the positioning hole 5 of the right protective cover 3 corresponding to the interface of the hydraulic damper 1, and then splice the left protective cover 3 with the right protective cover 3. In this way, through the protective cover 3, the dust-proof protection effect of the hydraulic damper 1 can be achieved;

[0019] Fixing plates 4 are fixed at both the front and rear ends of the protective cover 3, fixing nuts 6 are fixed on the upper and lower sides of the mutually remote ends of the fixing plates 4, and bolts 7 are threadedly connected between the fixing nuts 6 on the same horizontal line on the left and right. After splicing the protective cover 3, rotate the bolt 7 to screw the bolt 7 into the two fixing nuts 6, and the protective cover 3 can be fixed;

[0020] A synchronous wheel assembly 8 is installed between the right parts of the bolts 7. The synchronous wheel assembly 8 includes a synchronous belt and two synchronous wheels. The synchronous wheels are fixedly corresponding to the right ends of the bolts 7 one by one, and the synchronous belt is connected between the synchronous wheels. By rotating one of the synchronous wheels, the other synchronous wheel can be driven to rotate synchronously by the synchronous belt. In this way, the two bolts 7 are driven to rotate synchronously by the two synchronous wheels, so that the two bolts 7 are simultaneously screwed into the fixing nuts 6, and it is also more convenient to install the protective cover 3 in this way;

[0021] A semi-circular groove 14 is formed in the upper inner wall of the protective cover 3. At the upper end of the inner wall of the left semi-circular groove 14, a side groove 15 is formed. At the upper end of the inner wall of the right semi-circular groove 14, a clamping hole 16 is formed. A connecting ring 9 is inserted between the upper parts of the protective cover 3. The connecting ring 9 is located outside the piston rod 2. A side block 13 is fixed to the lower side of the left end of the connecting ring 9. The side block 13 is inserted into the side groove 15. The side block 13 is slidably connected to the semi-circular groove 14. An elastic clamping bead 19 is connected to the upper end of the side block 13. The clamping bead 19 is inserted into the clamping hole 16. A spring groove 17 is formed at the upper end of the side block 13. The clamping bead 19 is located inside the spring groove 17. A spring 18 is fixed between the clamping bead 19 and the bottom of the spring groove 17. An expansion bellows 10 is fixed to the upper end of the connecting ring 9. The expansion bellows 10 is located outside the piston rod 2 and is fixed to the upper part of the piston rod 2. The end of the expansion bellows 10 is fixed with a lower connecting plate 11. An upper connecting plate 12 is fixed to the upper side of the outer part of the piston rod 2. A plurality of stud bolts are evenly fixed in a ring shape on the outer side of the upper end of the lower connecting plate 11. The upper part of the stud bolts passes through the upper connecting plate 12 movably. A nut is threadedly connected to the outer part of the stud bolts. The nut is located above the upper connecting plate 12. After the protective cover 3 is installed, when connecting the expansion bellows 10 to the piston rod 2 and the protective cover 3, only need to insert the connecting ring 9 between the upper parts of the protective cover 3, and at the same time align and insert the side block 13 into the side groove 15. In this way, the side block 13 will move into the semi-circular groove 14. Then rotate the connecting ring 9 by 180 degrees. At this time, the side block 13 will slide inside the semi-circular groove 14 until it is misaligned with the side groove 15. In this way, the side block 13 cannot be vertically removed from the inside of the semi-circular groove 14. When the side block 13 moves to the position where the clamping bead 19 corresponds to the clamping hole 16, because when the side block 13 is inside the semi-circular groove 14, the clamping bead 19 is squeezed by the inner wall of the semi-circular groove 14 and moves into the spring groove 17 to squeeze the spring 18, so the spring 18 will spring the clamping bead 19 into the clamping hole 16 to prevent the connecting ring 9 from being removed upward between the upper parts of the protective cover 3. In this way, the installation only needs to rotate half a turn, without rotating multiple turns. In this way, the installation of the expansion bellows 10 and the dust-proof cover 3 is relatively convenient. Then pass the stud bolts of the lower connecting plate 11 through the upper connecting plate 12, and screw the nuts on the outer parts of the stud bolts to fix the expansion bellows 10 and the piston rod 2. In this way, while the expansion bellows 10 provides dust-proof protection for the piston rod 2, it does not interfere with the use of the piston rod 2, thereby improving the service life of the hydraulic damper 1 at sites such as thermal power plants and steel plants.

Claims

1. A protective hydraulic damper, comprising a hydraulic damper (1), wherein a piston rod (2) is slidably connected to the upper portion of the hydraulic damper (1), and characterized in that: A pair of protective covers (3) are symmetrically mounted on the left and right sides of the exterior of the hydraulic damper (1). The protective covers (3) are fixedly connected to each other. A semi-annular groove (14) is provided on the inner wall of the upper portion of the protective cover (3). A side groove (15) is provided on the upper end of the inner wall of the semi-annular groove (14) on the left side. A clamping hole (16) is provided on the upper end of the inner wall of the semi-annular groove (14) on the right side. A connecting ring (9) is inserted between the upper portions of the protective covers (3). The connecting ring (9) is located on the outer side of the piston rod (2). A side block (13) is fixed to the lower left end of the connecting ring (9), the side block (13) is plugged into the side groove (15), the side block (13) is slidably connected to the semi-annular groove (14), the upper end of the side block (13) is elastically connected to a clamping bead (19), the clamping bead (19) is plugged into the clamping hole (16), and a telescopic bellows (10) is fixed to the upper end of the connecting ring (9), the telescopic bellows (10) is located outside the piston rod (2) and is fixed to the upper part of the piston rod (2).

2. A protective hydraulic damper according to claim 1, characterized in that: The hydraulic damper (1) is provided with an interface on the lower right side, and the protective cover (3) on the right side is provided with a positioning hole (5) on the lower right side, and the interface is plugged into the positioning hole (5).

3. A protective hydraulic damper according to claim 2, characterized in that: The protective cover (3) is fixed with a fixing plate (4) at both the front and rear ends, and fixing nuts (6) are fixed on the upper and lower sides of the end of the fixing plate (4) that is away from each other, and bolts (7) are threadedly connected between the fixing nuts (6) on the same horizontal line on the left and right sides, and a synchronous wheel assembly (8) is installed between the right parts of the bolts (7).

4. The protective hydraulic damper according to claim 3, characterized in that: The synchronous wheel assembly (8) comprises a synchronous belt and two synchronous wheels, the synchronous wheels are fixed to the right ends of the bolts (7) in a one-to-one correspondence, and the synchronous belt is connected between the synchronous wheels.

5. The protective hydraulic damper according to claim 1, characterized in that: A spring groove (17) is formed at the upper end of the side block (13), the clamping bead (19) is located inside the spring groove (17), and a spring (18) is fixed between the clamping bead (19) and the bottom of the spring groove (17).

6. The protective hydraulic damper according to claim 1, characterized in that: A lower connecting plate (11) is fixed to the end of the telescopic bellows (10), and an upper connecting plate (12) is fixed to the upper outer side of the piston rod (2). A plurality of studs are evenly fixed in a ring shape on the outer side of the upper end of the lower connecting plate (11), and the upper parts of the studs are movably penetrated by the upper connecting plate (12). The outer parts of the studs are threadedly connected to nuts, and the nuts are located above the upper connecting plate (12).

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