Piston structure with sealing ring convenient to disassemble

Abstract

The utility model discloses a piston structure with a sealing ring convenient to disassemble, which relates to the technical field of piston structures and comprises a piston head, the upper side of the piston head is movably connected with a clamping column, the upper side of the clamping column is rotatably connected with a connecting rod, the upper side of the piston head is rotatably connected with a knob, and the outer wall of the piston head is fixedly connected with a fixing ring. Through mutual matching of the first gear, the gear ring, the second gear, the threaded rod, the lifting disc, an ejector block, an annular groove, a groove, a limiting column and an inclined groove, a sealing ring can be easily replaced, the sealing ring can be easily replaced, and abnormal friction between a piston and an air cylinder wall caused by aging, abrasion or damage of the sealing ring can be avoided; a sealing ring has the problems of elasticity reduction, surface abrasion and the like after being used for a long time, and if the sealing ring cannot be replaced in time, friction force borne by a piston in the reciprocating motion process is increased, abrasion of the piston and an air cylinder wall is accelerated, and the service life of equipment is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a piston structure technical field, concretely relates to a piston structure convenient to dismantle sealing washer. BACKGROUND

[0002] In the hydraulic cylinder and pneumatic cylinder of various industrial equipment, the reciprocating motion of the piston needs good sealing to prevent hydraulic oil or gas leakage, and the sealing washer structure convenient to disassemble can ensure that the operation can be quickly and easily carried out when the system is maintained or the sealing element is replaced, reduce downtime, and improve production efficiency.

[0003] The prior art has the following problems:

[0004] The existing piston structure cannot easily replace the sealing washer during use, and if the piston structure cannot easily replace the sealing washer when the sealing washer needs to be replaced due to wear, aging, damage, etc., the leakage problem will continue to exist, impurities, dust, moisture, etc. from the outside can easily enter the inside of the equipment, and because the sealing washer cannot be replaced in time, the friction between the piston and the cylinder wall will increase, causing the wear to intensify, in addition, the existing piston structure cannot disassemble the piston head, and the piston head may be severely worn, cracked or damaged after long-term use, if it cannot be disassembled, it means that these damaged parts cannot be replaced, and if the piston head cannot be disassembled separately, the entire piston or related parts may need to be replaced, which greatly increases the maintenance time and workload. SUMMARY

[0005] The utility model provides a piston structure convenient to dismantle sealing washer to solve the problem existing in the above -mentioned background art.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A piston structure convenient to dismantle sealing washer, including piston head, the upper side of piston head is connected with the clamping column, the upper side of clamping column is rotatably connected with connecting rod, the upper side of piston head is rotatably connected with knob, the outer wall of piston head is fixedly connected with fixed ring, the outer wall of fixed ring is equipped with annular groove, the inner surface of annular groove is movably connected with sealing washer.

[0008] The utility model technical scheme is further improved in that: the lower side of knob is fixedly connected with the rotating shaft, the lower end of rotating shaft is fixedly connected with first gear, the outer wall of first gear is meshed with the gear ring, the inner surface of gear ring is meshed with two second gears, the upper side of second gear is fixedly connected with threaded rod, the outer wall of threaded rod is screw connected with lifting disc.

[0009] The further improvement in the utility model technical scheme lies in that the outer wall of the lifting disc is slidably connected with the fixed ring, the outer wall of the rotating shaft is rotatably connected with the fixed ring, the outer wall of the lifting disc is provided with a plurality of grooves, the inner surface of the groove is provided with two inclined grooves, and the inner surface of the groove is slidably connected with a top block.

[0010] The further improvement in the utility model technical scheme lies in that the inner surface of the inclined groove is slidably connected with a limiting column, the opposite surfaces of the two limiting columns are fixedly connected with the top block, the outer wall of the top block is slidably connected with the fixed ring, and the side, away from the lifting disc, of the top block is movably connected with a sealing ring.

[0011] The further improvement in the utility model technical scheme lies in that the upper side of the piston head is provided with an opening, the inner surface of the opening is provided with two insertion grooves, the outer wall of the clamping column is slidably connected with two insertion blocks, and the outer wall of the insertion block is movably connected with the insertion groove.

[0012] The further improvement in the utility model technical scheme lies in that the outer wall of the clamping column is rotatably connected with a threaded ring, the inner surface of the threaded ring is threadedly connected with two threaded blocks, the opposite surfaces of the two threaded blocks are fixedly connected with a connecting plate, the inner wall of the clamping column is fixedly connected with a supporting plate at the lower side, the left and right sides of the supporting plate are fixedly connected with limiting rods, and the outer wall of the limiting rod is slidably connected with the insertion block.

[0013] The further improvement in the utility model technical scheme lies in that the outer wall of the supporting plate is slidably connected with the connecting plate, the lower side of the connecting plate is rotatably connected with two rotating plates, and the other end of the rotating plate is rotatably connected with the insertion block.

[0014] Thanks to the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] The utility model provides a piston structure convenient to dismantle sealing ring, through mutual cooperation of first gear, gear ring, second gear, threaded rod, lifting disc, top block, annular groove, groove, limiting column and inclined groove, sealing ring can be replaced easily, can avoid abnormal friction between piston and cylinder wall caused by aging, wear or damage of sealing ring, the problems of elasticity drop and surface wear of sealing ring after long -term use, if can not replace in time, will make the friction force that piston receives in reciprocating motion process increase, accelerate the wear of piston and cylinder wall, shorten the service life of equipment.

[0016] The utility model provides a piston structure convenient to dismantle sealing washer, through the mutual cooperation of slot, plug, screw ring, threaded block, connecting plate, support plate, limit rod and rotary plate, can dismantle piston head, for some slightly damaged piston head, can carry out repair and renovation after dismantling, reuses, this helps to prolong the service life of piston head, reduces the frequency of part replacement, simultaneously, can clean thoroughly to piston head after dismantling, removes deposit, keeps the good working condition of piston. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the partial structure internal schematic diagram of the utility model;

[0019] Figure 3 It is the partial structure cross section schematic diagram of the utility model;

[0020] Figure 4 It is the partial structure explosion schematic diagram of the utility model;

[0021] Figure 5 It is the internal structure schematic diagram of the utility model's clamping column.

[0022] In the drawing: 1, piston head;2, clamping column;3, connecting rod;4, rotating shaft;5, knob;6, fixed ring;7, sealing ring;8, first gear;9, gear ring;10, second gear;11, threaded rod;12, lifting disc;13, top block;14, annular groove;15, recess;16, limit post;17, inclined slot;18, opening;19, slot;20, plug;21, screw ring;22, threaded block;23, connecting plate;24, support plate;25, limit rod;26, rotary plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the following further elaborates the utility model by combining with specific implementation manners:

[0024] For example, Figures 1-2As shown, the utility model provides a kind of piston structure of sealing ring convenient to dismount, including piston head 1, the upper side of piston head 1 is hingedly connected with clamping column 2, the upper side of clamping column 2 is rotatably connected with connecting rod 3, the upper side of piston head 1 is rotatably connected with knob 5, the outer wall of piston head 1 is fixedly connected with fixed ring 6, annular groove 14 is arranged in the outer wall of fixed ring 6, the inner surface of annular groove 14 is hingedly connected with sealing ring 7, piston head 1 is the main part of piston structure, clamping column 2 is hingedly connected in the upper side of piston head 1, for rotatably connected with connecting rod 3, realize the transmission of force, knob 5 is rotatably connected in the upper side of piston head 1, and the subsequent structure can be operated by rotating knob 5, to further realize the replacement of sealing ring 7 and other functions, fixed ring 6 is fixed in the outer wall of piston head 1, annular groove 14 is arranged in the outer wall of fixed ring 6, for installing sealing ring 7, so that sealing ring 7 can seal between piston head 1 and cylinder wall, prevent hydraulic oil or gas leakage.

[0025] As Figures 2-3The utility model provides a technical scheme: preferably, the lower side fixed connection of knob 5 has pivot 4, the lower end fixed connection of pivot 4 has first gear 8, the outer wall of first gear 8 is engaged with and is connected to gear ring 9, the inner surface of gear ring 9 is engaged with and is connected to two second gears 10, the upper side fixed connection of second gear 10 has threaded rod 11, the outer wall of threaded rod 11 is connected with lifting disc 12, the outer wall of lifting disc 12 is connected with fixed ring 6 slidingly, the outer wall of pivot 4 is connected with fixed ring 6 rotatably, the outer wall of lifting disc 12 is equipped with a plurality of recesses 15, the inner surface of recess 15 is equipped with two inclined grooves 17, the inner surface of recess 15 is connected with top block 13 slidingly, the inner surface of inclined groove 17 is connected with limit post 16 slidingly, the opposite surface of two limit posts 16 is connected with top block 13 fixedly, the outer wall of top block 13 is connected with fixed ring 6 slidingly, the side of top block 13 away from lifting disc 12 is connected with sealing ring 7 movably, when rotating knob 5, knob 5 drives the rotation of its lower side fixed connection pivot 4, the rotation of first gear 8 fixedly connected with the lower end of pivot 4, because first gear 8 is engaged with gear ring 9, the rotation of first gear 8 will drive the rotation of gear ring 9, the inner surface of gear ring 9 is engaged with and is connected to two second gears 10, the rotation of gear ring 9 will also make two second gears 10 rotate, the rotation of threaded rod 11 fixedly connected with the upper side of second gear 10 will also rotate with second gear 10, because the outer wall of threaded rod 11 is connected with lifting disc 12 threadedly, and the outer wall of lifting disc 12 is connected with fixed ring 6 slidingly, the outer wall of pivot 4 is connected with fixed ring 6 rotatably, so the rotation of threaded rod 11 will make lifting disc 12 move up and down on fixed ring 6, the outer wall of lifting disc 12 is equipped with a plurality of recesses 15, the inner surface of recess 15 is equipped with two inclined grooves 17, top block 13 is connected in recess 15 slidingly, and two limit posts 16 are connected with top block 13 fixedly, limit post 16 is also connected in inclined groove 17 slidingly, when lifting disc 12 moves up and down, limit post 16 slides in inclined groove 17, because of the inclination angle of inclined groove 17, the sliding of limit post 16 will drive the radial movement of top block 13 in recess 15, the side of top block 13 away from lifting disc 12 is connected with sealing ring 7 movably, the radial movement of top block 13 can extrude sealing ring 7 from annular groove 14, so as to realize the purpose of easily replacing sealing ring 7.

[0026] As Figures 4-5As shown, the utility model provides a technical scheme: preferably, the upper side of piston head 1 is equipped with opening 18, the inner surface of opening 18 is equipped with two insertion slots 19, the outer wall of clamping column 2 is connected with two insertion blocks 20 through sliding, the outer wall of insertion block 20 is movably connected with insertion slot 19, the outer wall of clamping column 2 is rotatably connected with screw ring 21, the inner surface of screw ring 21 is threadedly connected with two threaded blocks 22, the opposite surface of two threaded blocks 22 is fixedly connected with a connecting plate 23, the inner wall of clamping column 2 is fixedly connected with support plate 24 on the downside, the left and right sides of support plate 24 are all fixedly connected with limiting rod 25, the outer wall of limiting rod 25 is slidably connected with insertion block 20, the outer wall of support plate 24 is slidably connected with connecting plate 23, the downside of connecting plate 23 is rotatably connected with two rotating plates 26, the other end of rotating plate 26 is rotatably connected with insertion block 20, when needing to disassemble piston head 1, can rotate screw ring 21, and two threaded blocks 22 will move along the radial surface of screw ring 21, the opposite surface of two threaded blocks 22 is fixedly connected with a connecting plate 23, the inner wall of clamping column 2 is fixedly connected with support plate 24 on the downside, the left and right sides of support plate 24 are fixedly connected with limiting rod 25 and insertion block 20, and limiting rod 25 is slidably connected with insertion block 20, and the movement of insertion block 20 is limited, the outer wall of support plate 24 is slidably connected with connecting plate 23, the downside of connecting plate 23 is rotatably connected with two rotating plates 26, the other end of rotating plate 26 is rotatably connected with insertion block 20, when screw ring 21 rotates and makes threaded block 22 move radially, will drive connecting plate 23 to move, the movement of connecting plate 23 makes insertion block 20 move radially on the outer wall of clamping column 2 through rotating plate 26, when insertion block 20 is pulled out from insertion slot 19, can disassemble piston head 1, realize the disassembly function of piston head 1, and it is convenient to repair, clean and other operations to piston head 1.

[0027] The working principle of the piston structure with the seal ring convenient to disassemble will be described below.

[0028] As Figures 1-5When rotating the knob 5, the knob 5 drives the rotation of the rotation shaft 4 fixedly connected to the lower side of the knob 5, the first gear 8 fixedly connected to the lower end of the rotation shaft 4 rotates, the rotation of the first gear 8 drives the rotation of the tooth ring 9 due to the meshing of the first gear 8 and the tooth ring 9, the rotation of the tooth ring 9 drives the rotation of the two second gears 10 meshingly connected to the inner surface of the tooth ring 9, the rotation of the second gear 10 drives the rotation of the threaded rod 11 fixedly connected to the upper side of the second gear 10, the rotation of the threaded rod 11 drives the up-down movement of the lifting disc 12 due to the threaded connection between the outer wall of the threaded rod 11 and the lifting disc 12 and the sliding connection between the outer wall of the lifting disc 12 and the fixed ring 6, the rotation of the threaded rod 11 drives the up-down movement of the lifting disc 12 on the fixed ring 6 due to the rotation connection between the outer wall of the rotation shaft 4 and the fixed ring 6, the outer wall of the lifting disc 12 is provided with a plurality of grooves 15, the inner surface of the groove 15 is provided with two inclined grooves 17, the top block 13 is slidingly connected in the groove 15, and the two limiting columns 16 are fixedly connected with the top block 13, the limiting column 16 is slidingly connected in the inclined groove 17, when the lifting disc 12 moves up and down, the limiting column 16 slides in the inclined groove 17, due to the inclination angle of the inclined groove 17, the sliding of the limiting column 16 drives the radial movement of the top block 13 in the groove 15, the side of the top block 13 away from the lifting disc 12 is movably connected with the sealing ring 7, the radial movement of the top block 13 can lift the sealing ring 7 out of the annular groove 14, thereby achieving the purpose of easily replacing the sealing ring 7, when it is necessary to disassemble the piston head 1, the threaded ring 21 is rotated, the two threaded blocks 22 move radially in the inner surface of the threaded ring 21, the connecting plate 23 is fixedly connected to the opposite surface of the two threaded blocks 22, the supporting plate 24 is fixedly connected to the left and right sides of the supporting plate 24, the supporting plate 24 is slidingly connected with the connecting plate 23, the two rotating plates 26 are rotatably connected to the lower side of the connecting plate 23, the other end of the rotating plate 26 is rotatably connected with the plug block 20, when the threaded ring 21 is rotated to make the threaded block 22 move radially, the connecting plate 23 is driven to move, the movement of the connecting plate 23 drives the plug block 20 to move radially on the outer wall of the clamping column 2 through the rotating plate 26, when the plug block 20 is pulled out of the plug groove 19, the piston head 1 can be disassembled, thereby achieving the disassembly function of the piston head 1, facilitating the maintenance, cleaning and other operations of the piston head 1.

[0029] The above has made a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A piston structure that facilitates the removal of the sealing ring, characterized in that: Includes a piston head (1), with a snap-fit ​​pin (2) movably connected to the upper side of the piston head (1), a connecting rod (3) rotatably connected to the upper side of the snap-fit ​​pin (2), a knob (5) rotatably connected to the upper side of the piston head (1), a fixing ring (6) fixedly connected to the outer wall of the piston head (1), an annular groove (14) opened on the outer wall of the fixing ring (6), and a sealing ring (7) movably connected to the inner surface of the annular groove (14).

2. The piston structure for easy disassembly of the sealing ring according to claim 1, characterized in that: A rotating shaft (4) is fixedly connected to the lower side of the knob (5). A first gear (8) is fixedly connected to the lower end of the rotating shaft (4). A gear ring (9) is meshed with the outer wall of the first gear (8). Two second gears (10) are meshed with the inner surface of the gear ring (9). A threaded rod (11) is fixedly connected through the upper side of the second gear (10). A lifting plate (12) is threadedly connected to the outer wall of the threaded rod (11).

3. The piston structure for easy disassembly of the sealing ring according to claim 2, characterized in that: The outer wall of the lifting plate (12) is slidably connected to the fixed ring (6), the outer wall of the rotating shaft (4) is rotatably connected to the fixed ring (6), the outer wall of the lifting plate (12) is provided with multiple grooves (15), the inner surface of the grooves (15) is provided with two inclined grooves (17), and the inner surface of the grooves (15) is slidably connected with a top block (13).

4. The piston structure for easy disassembly of the sealing ring according to claim 3, characterized in that: The inner surface of the inclined groove (17) is slidably connected to the limiting post (16), and the opposite surfaces of the two limiting posts (16) are fixedly connected to the top block (13). The outer wall of the top block (13) is slidably connected to the fixing ring (6), and the side of the top block (13) away from the lifting plate (12) is movably connected to the sealing ring (7).

5. The piston structure for easy disassembly of the sealing ring according to claim 1, characterized in that: An opening (18) is provided on the upper side of the piston head (1), and two slots (19) are provided on the inner surface of the opening (18). Two inserts (20) are slidably connected through the outer wall of the snap-fit ​​post (2), and the outer wall of the inserts (20) is movably connected to the slots (19).

6. The piston structure for easy disassembly of the sealing ring according to claim 5, characterized in that: The outer wall of the snap-fit ​​post (2) is rotatably connected to a threaded ring (21). The inner surface of the threaded ring (21) is threaded with two threaded blocks (22). The opposite surfaces of the two threaded blocks (22) are fixedly connected to a connecting plate (23). The lower side of the inner wall of the snap-fit ​​post (2) is fixedly connected to a support plate (24). The left and right sides of the support plate (24) are fixedly connected to limit rods (25). The outer wall of the limit rod (25) is slidably connected to the insert block (20).

7. The piston structure for easy disassembly of the sealing ring according to claim 6, characterized in that: The outer wall of the support plate (24) is slidably connected to the connecting plate (23), and two rotating plates (26) are rotatably connected to the lower side of the connecting plate (23). The other end of the rotating plate (26) is rotatably connected to the insert block (20).

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