Dustproof hydraulic oil cylinder with buffer piston

Abstract

The dustproof hydraulic oil cylinder with the buffer piston comprises a hydraulic rod and an outer protection rod, the outer side of the hydraulic rod is sleeved with a dustproof sleeve, the upper sides of the two ends of the dustproof sleeve are fixedly connected with connecting pieces, the outer sides of the connecting pieces are sleeved with lantern rings, the opposite sides of the lantern rings on the two sides are fixedly connected with a mounting plate, and the outer protection rod is fixedly connected with the mounting plate. Four sets of rotating grooves are formed in the mounting plate, an inner protection rod is slidably connected to the interior of an outer protection rod, threaded rods are fixedly connected to the sides, opposite to each other, of the outer protection rod and the inner protection rod, and the threaded rods penetrate through the outer sides of the rotating grooves and are in threaded connection with first fixing nuts, so that the outer side of the dustproof sleeve is protected; and the dust-proof sleeve is prevented from being impacted and damaged to influence the normal dust-proof effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field, concretely is a dustproof hydraulic cylinder with buffer piston. BACKGROUND

[0002] The basic structure of the hydraulic cylinder mainly includes a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The cylinder barrel and the cylinder cover constitute the main structure of the hydraulic cylinder, the piston and the piston rod jointly undertake the task of energy conversion, the sealing device is used to ensure the stability of the internal hydraulic system pressure and prevent leakage, the buffer device is used to absorb and reduce the impact force of the moving parts at the end of the stroke, and the exhaust device is responsible for discharging air in the hydraulic system to ensure smooth operation of the hydraulic cylinder.

[0003] In order to improve the sealing performance of the hydraulic cylinder, a dustproof device such as a dustproof sleeve or a dustproof sealing element is usually installed on the outer side of the front end cover of the hydraulic cylinder, but the existing dustproof sleeve has a long service life, but is easily damaged when impacted by the outside world, resulting in the failure of the dustproof effect of the dustproof sleeve. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a dustproof hydraulic cylinder with buffer piston to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a dustproof hydraulic cylinder with buffer piston, comprising a hydraulic rod, an outer protection rod, a dustproof sleeve is sleeved on the outer side of the hydraulic rod, connecting plates are fixedly connected on the upper side of both ends of the dustproof sleeve, sleeve rings are sleeved on the outer side of the connecting plates, mounting plates are fixedly connected on one side of the sleeve rings facing each other, four groups of rotating grooves are formed in the mounting plates, an inner protection rod is slidably connected in the outer protection rod, threaded rods are fixedly connected on the opposite sides of the outer protection rod and the inner protection rod, and first fixed nuts are threadedly connected on the outer side of the rotating grooves penetrating the threaded rods.

[0006] Preferably, mounting holes are formed in the sleeve rings and the connecting plates.

[0007] Preferably, embedding grooves are formed in both ends of the hydraulic rod, pressure rings are sleeved on the outer side of both ends of the hydraulic rod, embedding blocks are fixedly connected in the pressure rings, two groups of connecting plates are fixedly connected on one end of the pressure rings, fixed holes are formed in the connecting plates, fixed screws are threadedly connected in the fixed holes, and second fixed nuts are threadedly connected on the lower part of the fixed screws.

[0008] Preferably, four groups of control grooves are arranged at both ends of the hydraulic rod, four groups of sliding rods are slidably connected at the inner part of the connection part between the control grooves and the embedding grooves, the fixed sheets are fixedly connected to the control grooves at one end of the sliding rods penetrating the control grooves, the springs are fixedly connected between the fixed sheets and the inner walls of the control grooves, the springs are sleeved on the outer sides of the sliding rods, and the pushing rings are fixedly connected to the embedding grooves at the other end of the sliding rods penetrating the embedding grooves.

[0009] Preferably, the first inclined tables are arranged at one side of the pushing rings on the two sides, and the second inclined tables are arranged at the lower parts of the embedding blocks on the two sides.

[0010] Preferably, the sealing sheets are fixedly connected to the lower parts of the pushing rings on the two sides, and the sealing grooves are arranged at the two sides in the hydraulic rod and matched with the sealing sheets.

[0011] Compared with the prior art, the hydraulic rod has the beneficial effects that:

[0012] 1. The sleeve ring is installed at the connecting sheet, the connecting installation hole is connected, the installation of the sleeve ring is realized, the outer protection rod and the inner protection rod are inserted into the rotating grooves at two ends, and the installation positions of the outer protection rod and the inner protection rod are set according to requirements, the two first fixed nuts are rotated, the two first fixed nuts are fixed on the two sides of the two installation plates, and then the outer protection rod and the inner protection rod are fixed, the inner protection rod moves in the outer protection rod when the hydraulic rod moves, and then the outer side of the dustproof sleeve is protected, so that the dustproof sleeve is prevented from being damaged by impact and the normal dustproof effect is affected.

[0013] 2. When the embedding block is inserted into the embedding groove, the pushing ring is pushed to move to the two sides, the pushing ring is pressed against the inner wall of the embedding groove, the spring pulls the fixed sheet, the sliding rod drives the pushing ring to tightly adhere to the two sides of the embedding block, and then the sealing property of the embedding groove is improved, and impurities or water is prevented from penetrating. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a first perspective three-dimensional structure schematic view of the utility model;

[0015] Fig. 2 It is a second perspective embedding groove structure sectional view of the utility model;

[0016] Fig. 3 It is a third perspective pressing ring structure schematic view of the utility model.

[0017] In the figure: 1, hydraulic rod; 2, dust cover; 3, connecting piece; 4, collar; 5, mounting plate; 6, rotating groove; 7, outer protective rod; 8, inner protective rod; 9, threaded rod; 10, first fixed nut; 11, mounting hole; 12, embedded groove; 13, control groove; 14, sliding rod; 15, fixed piece; 16, push ring; 17, first inclined table; 18, sealing piece; 19, sealing groove; 20, spring; 21, compression ring; 22, embedded block; 23, second inclined table; 24, connecting plate; 25, fixed hole; 26, fixed screw; 27, second fixed nut. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a dustproof hydraulic cylinder with buffer piston, including hydraulic rod 1, outer protective rod 7, dust cover 2 is equipped on the outside of hydraulic rod 1, one end of dust cover 2 is fixed to the part of exposing cylinder body, the other end is fixed to cylinder body, dust collection structure is installed in the top of cylinder body by mounting frame, and the outer wall of piston rod is contacted, when hydraulic cylinder operates, dust cover 2 can effectively block dust and impurities from entering the inside of oil cylinder, connecting piece 3 is fixedly welded on the upper side of both ends of dust cover 2, collar 4 is equipped on the outside of connecting piece 3, mounting plate 5 is fixedly welded on the side facing each other of both sides of collar 4, four rotating grooves 6 are arranged in mounting plate 5, inner protective rod 8 is slidably installed in outer protective rod 7, threaded rod 9 is fixedly welded on the side opposite to outer protective rod 7 and inner protective rod 8, first fixed nut 10 is connected by thread on the outside of rotating groove 6 penetrated by threaded rod 9, by inserting the both ends of outer protective rod 7 and inner protective rod 8 into rotating groove 6, and moving along rotating groove 6 according to requirement, the installation position of outer protective rod 7 and inner protective rod 8 is set, by rotating both sides of first fixed nut 10, both sides of first fixed nut 10 are fixed on both sides of both sides of mounting plate 5, so as to fix outer protective rod 7 and inner protective rod 8, when hydraulic rod 1 moves, inner protective rod 8 moves in outer protective rod 7, so as to protect the outside of dust cover 2;

[0020] The ring 4 and the connecting piece 3 are internally provided with matched mounting holes 11, facilitating the dismounting of the ring 4, for removing the outer protection rod 7 and the inner protection rod 8; the hydraulic rod 1 is provided with embedded grooves 12 at both ends, and the outer side of both ends of the hydraulic rod 1 is sleeved with a pressing ring 21, the inner side of which is fixedly welded with embedded blocks 22 matched with the embedded grooves 12, one end of the pressing ring 21 is fixedly welded with two groups of connecting plates 24, the inner side of the connecting plate 24 is provided with fixed holes 25, the inner side of the fixed hole 25 is threadedly connected with fixed screws 26, the lower part of the fixed screw 26 is threadedly connected with a second fixed nut 27, by placing the dustproof sleeve 2 at both ends on the upper part of the embedded groove 12, by aligning the embedded blocks 22 with the outer side of the embedded groove 12, by penetrating the fixed holes 25 with the fixed screws 26, and by pressing the two connecting plates 24 with the second fixed nut 27, the pressing ring 21 is pressed tightly on both sides of the dustproof sleeve 2, so as to realize the installation of the dustproof sleeve 2; the hydraulic rod 1 is provided with four groups of control grooves 13 at both ends, the inner side of the connection between the control groove 13 and the embedded groove 12 is slidingly installed with four groups of sliding rods 14, one end of the sliding rod 14 penetrates into the control groove 13 and is fixedly welded with a fixed piece 15, the fixed piece 15 and the inner wall of the control groove 13 are fixedly welded with springs 20, the springs 20 are sleeved on the outer side of the sliding rod 14, the other end of the sliding rod 14 penetrates into the embedded groove 12 and is fixedly welded with a pushing ring 16, when the embedded block 22 is inserted into the embedded groove 12, the pushing ring 16 is moved to both sides by pushing, the pushing ring 16 is pressed tightly against the inner wall of the embedded groove 12, the spring 20 pulls the fixed piece 15, the sliding rod 14 drives the pushing ring 16 to tightly adhere to both sides of the embedded block 22, so as to improve the sealing performance of the embedded groove 12 and prevent impurities or water from penetrating; the first inclined table 17 is provided on one side facing the two pushing rings 16, the second inclined table 23 matched with the first inclined table 17 is provided on both sides of the lower part of the embedded block 22, when the embedded block 22 is inserted into the embedded groove 12, the first inclined table 17 cooperates with the second inclined table 23, facilitating the movement of the pushing ring 16 to both sides; the sealing pieces 18 are fixedly welded on the lower part of the side away from the two pushing rings 16, the sealing grooves 19 matched with the sealing pieces 18 are provided on both sides of the inner side of the hydraulic rod 1, the sealing piece 18 is inserted into the sealing groove 19, further improving the sealing performance.

[0021] Working principle: the utility model discloses in use, through the dust cover 2 both ends are placed in the embedded groove 12 upper portion, through the embedded block 22 is opposite the embedded groove 12 outside, through fixed screw rod 26 penetrates fixed hole 25, second fixed nut 27 is pressed both sides connecting plate 24, thereby the compression ring 21 is pressed dust cover 2 both sides, thereby realize the installation of dust cover 2, when embedded block 22 is inserted into embedded groove 12, through the push ring 16 is moved to both sides, push ring 16 is pressed embedded groove 12 inner wall, spring 20 is through the pull of fixed sheet 15, sliding rod 14 drive push ring 16 is tightly attached embedded block 22 both sides, thereby improve the sealing of embedded groove 12, prevent impurities or water infiltration, through the installation of sleeve ring 4 is installed in connecting piece 3, connection installation hole 11, realize the installation of sleeve ring 4, through the outer protection rod 7 and inner protection rod 8 both ends are inserted into the rotation groove 6, and according to demand along rotation groove 6 moves, thereby set up the installation position of outer protection rod 7 and inner protection rod 8, through the rotation both sides first fixed nut 10, makes both sides first fixed nut 10 fixed in both sides mounting plate 5 both sides, thereby the outer protection rod 7 and inner protection rod 8 are fixed, hydraulic rod 1 moves, and inner protection rod 8 moves in outer protection rod 7, thereby the outer side of dust cover 2 is protected.

[0022] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0023] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A dustproof hydraulic cylinder with a buffer piston, comprising a hydraulic rod (1), an outer protective rod (7), characterized in that: The hydraulic rod (1) is externally sleeved with a dustproof sleeve (2), the two ends of the dustproof sleeve (2) are fixedly connected with connecting plates (3) on the upper side, the connecting plates (3) are externally sleeved with sleeve rings (4), the two sides of the sleeve rings (4) are fixedly connected with mounting plates (5) on the side facing each other, four groups of rotating grooves (6) are formed in the mounting plates (5), outer protection rods (7) are slidably connected with inner protection rods (8) in the mounting plates (5), the outer protection rods (7) and the inner protection rods (8) are fixedly connected with threaded rods (9) on the side away from each other, and the threaded rods (9) are threadedly connected with first fixed nuts (10) on the outside of the rotating grooves (6).

2. The dustproof hydraulic cylinder with a buffer piston according to claim 1, characterized in that: The sleeve rings (4) and the connecting plates (3) are internally formed with matching mounting holes (11).

3. The dustproof hydraulic cylinder with a buffer piston according to claim 1, characterized in that: The hydraulic rod (1) is externally sleeved with compression rings (21) on the two ends, the compression rings (21) are fixedly connected with embedding blocks (22) matched with the embedding grooves (12) in the inside, the compression rings (21) are fixedly connected with two groups of connecting plates (24) on one end, the connecting plates (24) are internally formed with fixed holes (25), the fixed holes (25) are threadedly connected with fixed screws (26) in the inside, and the fixed screws (26) are threadedly connected with second fixed nuts (27) at the lower part.

4. The dustproof hydraulic cylinder with a buffer piston according to claim 3, characterized in that: The hydraulic rod (1) is internally formed with four groups of control grooves (13) on the two ends, the control grooves (13) and the embedding grooves (12) are slidably connected with four groups of sliding rods (14) at the connecting positions, the sliding rods (14) are fixedly connected with fixed plates (15) on one end penetrating into the control grooves (13), the fixed plates (15) and the inner walls of the control grooves (13) are fixedly connected with springs (20), the springs (20) are externally sleeved with the sliding rods (14), and the sliding rods (14) are fixedly connected with pushing rings (16) on the other end penetrating into the embedding grooves (12).

5. The dust-proof hydraulic cylinder with a buffer piston according to claim 4, characterized in that: The two sides of the pushing rings (16) are formed with first inclined tables (17) on the side facing each other, and the embedding blocks (22) are formed with second inclined tables (23) matched with the first inclined tables (17) on the lower part of the two sides.

6. The dust-proof hydraulic cylinder with a buffer piston according to claim 4, characterized in that: The two sides of the pushing rings (16) are fixedly connected with sealing plates (18) on the side away from each other at the lower part, and the hydraulic rod (1) is internally formed with sealing grooves (19) matched with the sealing plates (18) on the two sides.

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