Hollow piston rod with end sealing structure

Abstract

The utility model discloses a hollow piston rod with an end sealing structure, which belongs to the technical field of hollow piston rods and is technically characterized by comprising a piston rod, the piston rod is slidably connected into a piston cylinder, a port sealing element is clamped at the top of the piston cylinder, and the top end of the piston rod penetrates through and extends out of the top of the port sealing element; wherein a connecting piece is installed on the piston cylinder, and the piston cylinder locks the port sealing piece through the connecting piece. According to the structure, the connecting piece and the port sealing piece are ingeniously combined, tight sealing of the front end of the piston rod is guaranteed, the sealing performance of internal connection of the piston barrel and the piston rod is higher, meanwhile, the capacity of flexible connection with other structures is reserved, and the universality and adaptability of the device are enhanced. And due to the unique mounting and dismounting mechanism, quick and stable connection is realized through the matching of the sliding insertion rod and the threaded block, and the mounting efficiency and the maintenance convenience are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hollow piston rod technical field, concretely relates to a hollow piston rod with end sealing structure. BACKGROUND

[0002] Hollow piston rod is a kind of mechanical element with hollow inside, has the advantages such as light weight, high strength, good heat dissipation performance.It is widely used in the field such as automobile, aerospace, ship, is the ideal choice of high-performance engine and the occasion needing high speed, high frequency, hollow structure not only reduces the weight and inertia of rod body, improves the response speed of mechanical system, also provides better cooling channel, effectively reduces working temperature.

[0003] In the existing piston rod design, the seal of piston rod front end is often separated from the connecting structure, leading to poor sealing effect or not enough flexible connection, and the traditional sealing mode can cause leakage due to wear, aging or improper installation, affecting the normal operation of equipment, therefore we propose a kind of hollow piston rod with end sealing structure to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of hollow piston rod with end sealing structure to solve the problems proposed in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hollow piston rod with end sealing structure, including piston cylinder, the inside sliding connection of piston cylinder has piston rod, the top of piston cylinder is clamped with port seal, the top of port seal is penetrated and extended by the top end of piston rod;

[0006] Wherein, the connecting piece is installed on the piston cylinder, and the piston cylinder locks the port seal through the connecting piece.

[0007] Preferably, the port seal includes a main fixed ring, a rotating rod is rotatably connected inside the main fixed ring, the inner wall of the rotating rod is slidably connected with the piston rod, oil outlet holes are formed in the inside of the main fixed ring and the rotating rod, and the oil outlet holes extend to the surface of the main fixed ring away from the rotating rod, a plurality of electric buttons are installed on the surface of the main fixed ring, and a silicon rubber ring is coated on the main fixed ring.

[0008] Preferably, a plurality of sealing rings are arranged at the contact part of the rotating rod and the piston rod, and the plurality of sealing rings are staggered distributed in the vertical direction of the oil outlet holes.

[0009] Preferably, the top and bottom of the main fixed ring are provided with outer rotating rings, the inner connecting rings are rotatably connected in the two outer rotating rings, and the rotating connection positions of each outer rotating ring and the adjacent inner connecting ring are filled with a plurality of rolling balls.

[0010] Preferably, the bottom of the main fixed ring is provided with a connecting clamping block, and the main fixed ring is clamped with the connecting piece through the connecting clamping block.

[0011] Preferably, the connecting piece comprises a positioning ring, a sliding insertion rod is slidably connected in the positioning ring, and a threaded block is threadedly connected on the positioning ring and threadedly connected with the sliding insertion rod through the positioning ring.

[0012] Wherein, one end of the sliding insertion rod is sequentially clamped with a plurality of connecting clamping blocks and then inserted into the positioning ring.

[0013] Preferably, the inside of the positioning ring is provided with a reset spring, one end of the reset spring is connected with the positioning ring, and the other end of the reset spring is connected with the sliding insertion rod.

[0014] Preferably, a handle is mounted on the sliding insertion rod, a handle is formed on the positioning ring, and the handle penetrates through the positioning ring and is slidably connected with the sliding slot.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The structure adopts the ingenious combination of the connecting piece and the port sealing piece, ensures the tight sealing of the front end of the piston cylinder, retains the flexible connection with other structures, enhances the versatility and adaptability of the device, realizes the quick and stable connection through the cooperation of the sliding insertion rod and the threaded block, and greatly improves the installation efficiency and maintenance convenience.

[0017] 2. The structure of the rotating rod and the inner and outer rings not only ensures the stable rotation of the piston rod, but also endows the flexibility of the connection with the multidirectional structure, widens the application range. It is particularly worth mentioning that the design of the electric button and the oil outlet hole integrated on the main fixed ring constitutes an intelligent oil leakage monitoring system. When slight leakage occurs in the piston rod, the oil liquid will trigger the expansion of the silicone rubber ring, not only seals the oil leakage point in time, but also provides an immediate oil leakage warning for the staff through the intuitive expansion phenomenon and the electric button trigger, so that the staff can quickly locate and take measures, effectively avoids the equipment failure and production safety accidents caused by oil leakage, and greatly improves the operation safety and maintenance efficiency of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the first view angle of the utility model;

[0019] Figure 2 is a perspective view of the second viewing angle of the utility model;

[0020] Figure 3 is a perspective exploded structure schematic view of the port sealing element in the utility model;

[0021] Figure 4 is a perspective view of the connecting piece in the utility model;

[0022] Figure 5 is a sectional view of the port sealing element in the utility model;

[0023] Figure 6 is a top sectional view of the connecting piece in the utility model.

[0024] In the drawing: 1, piston cylinder; 2, port sealing element; 21, main fixed ring; 22, electric button; 23, silicone rubber ring; 24, rotating rod; 25, outer rotating ring; 26, inner connecting ring; 27, sealing ring; 28, connecting clamping block; 29, oil outlet hole; 3, connecting piece; 31, positioning ring; 32, threaded block; 33, sliding insertion rod; 34, sliding slot; 35, handle; 36, return spring; 4, piston rod. DETAILED DESCRIPTION

[0025] 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 protection scope of the utility model.

[0026] Please refer to Figures 1-6 The utility model provides a hollow piston rod with end sealing structure, including piston cylinder 1, the inside of piston cylinder 1 is connected with piston rod 4 slidingly, the top of piston cylinder 1 is clamped with port sealing element 2, the top end of piston rod 4 penetrates and extends out the top of port sealing element 2;

[0027] Among them, the piston cylinder 1 is installed with connecting piece 3, and the piston cylinder 1 locks the port sealing element 2 through the connecting piece 3.

[0028] In the embodiment, the port sealing element 2 includes main fixed ring 21, the inside of main fixed ring 21 is rotatably connected with rotating rod 24, the inner wall of rotating rod 24 is slidably connected with piston rod 4, the inside of main fixed ring 21 and rotating rod 24 is provided with oil outlet hole 29, and the side, away from rotating rod 24, of oil outlet hole 29 extends to the surface of main fixed ring 21, a plurality of electric buttons 22 are installed on the surface of main fixed ring 21, and main fixed ring 21 is further coated with silicone rubber ring 23.

[0029] The contact position of the rotating rod 24 and the piston rod 4 is provided with a plurality of sealing rings 27, and the plurality of sealing rings 27 and the oil outlet hole 29 are staggered in the vertical direction.

[0030] The top and bottom of the main fixed ring 21 are provided with outer rotating rings 25, the inner connecting rings 26 are rotatably connected in the two outer rotating rings 25, and a plurality of balls are filled in the rotating connection position of each outer rotating ring 25 and the adjacent inner connecting ring 26. The two outer rotating rings 25 are fixed with the surface of the rotating rod 24.

[0031] The bottom of the main fixed ring 21 is provided with a connecting clamping block 28, and the main fixed ring 21 is clamped with the connecting piece 3 through the connecting clamping block 28.

[0032] In the port seal 2, the rotating rod 24 is directly in contact with the piston rod 4, and the inner connecting ring 26 can rotate the position of the sealing ring 27 and the piston rod 4 at the same time, so that the sealing ring 27 can rotate circumferentially, so that the piston rod 4 can be connected with the structure in different directions, and the main fixed ring 21 is used to fix the rotating rod 24 on the piston cylinder 1, and a plurality of electric buttons 22 and oil outlet holes 29 are arranged on the main fixed ring 21, and three sealing rings 27 are arranged in the inner part of the rotating rod 24. When the oil in the piston cylinder 1 leaks through the sealing ring 27, part of the fine oil will enter the oil outlet hole 29, and finally penetrate into the silicone rubber ring 23. At this time, the silicone rubber ring 23 will swell after contacting the oil to block the oil leakage position, and the expansion degree of the silicone rubber ring 23 can be observed from the outside during maintenance to observe whether the oil leakage is serious, and the silicone rubber ring 23 will also press the electric button 22 when it expands, informing the staff that the piston rod 1 leaks at this position, and timely discovery and remediation.

[0033] And the silicone rubber ring 23 is made of silicone rubber material, and the silicone rubber is a high molecular polymer, and its most remarkable feature is that it will swell when it meets oil. Therefore, silicone rubber is widely used in oil well plugging, oil and gas pipeline sealing, oil pump sealing and automobile sealing fields, and the principle of silicone rubber expansion is that it contains a chemical bond called silane bond in its molecule. This chemical bond can be broken when it comes into contact with oil, then form silicon oxide compound, and absorb oil molecules into its molecular structure, resulting in volume expansion, which has a more obvious change from the outside.

[0034] In the embodiment, the connecting piece 3 includes a positioning ring 31, a sliding plug rod 33 is slidably connected in the positioning ring 31, and a threaded block 32 is threadedly connected on the positioning ring 31, and the threaded block 32 is threadedly connected with the sliding plug rod 33 through the positioning ring 31.

[0035] Among them, one end of the sliding plug rod 33 is sequentially clamped with a plurality of connecting clamping blocks 28 and then inserted into the positioning ring 31.

[0036] The inside of the positioning ring 31 is provided with a reset spring 36, one end of the reset spring 36 is connected with the positioning ring 31, and the other end of the reset spring 36 is connected with the sliding insertion rod 33.

[0037] The sliding insertion rod 33 is provided with a pull handle 35, the pull handle 35 is arranged on the positioning ring 31 and penetrates through the positioning ring 31 and is in sliding connection with the sliding groove 34.

[0038] The pull handle 35 is pulled to move in the sliding groove 34, thereby driving the sliding insertion rod 33 to move in the positioning ring 31, the sliding insertion rod 33 penetrates through the two connecting clamping blocks 28 in sequence and is inserted back into the positioning ring 31, then the threaded block 32 is rotated to clamp the positioning ring 31, so that the reset spring 36 drives the sliding insertion rod 33 to rebound is prevented, at this time, the installation is completed, the connection between the port sealing element 2 and the piston cylinder 1 is established, when disassembling, only the threaded block 32 needs to be removed, then the sliding insertion rod 33 is reset into the positioning ring 31 under the action of the reset spring 36, and the port sealing element 2 can be removed by removing the limitation of the connecting clamping block 28 by the sliding insertion rod 33.

[0039] Further, the contact part of the main fixed ring 21 and the piston cylinder 1 can be additionally provided with a sealing rubber ring to achieve better sealing effect.

[0040] Further, the inside of the electric button 22 can be provided with a Bluetooth chip, when the electric button 22 is pressed, a signal is transmitted to a signal receiving end of a worker, a master control or a mobile phone, a receiver and the like, the specific size of the built-in chip of the electric button 22 and the type, specific power supply and signal connection mode of the Bluetooth chip are prior art, and can be selected according to actual conditions.

[0041] The working principle and use process of the utility model are as follows: the device is integrally formed by a multi-section combined structure, the connecting piece 3 is used to clamp the port sealing element 2 at the front end of the piston cylinder 1, and only the piston rod 4 can be connected with other structures;

[0042] During installation, the connecting clamping block 28 at the bottom of the main fixed ring 21 is clamped into the surface of the piston cylinder 1, then the pull handle 35 is pulled to move in the sliding groove 34, thereby driving the sliding insertion rod 33 to move in the positioning ring 31, the sliding insertion rod 33 penetrates through the two connecting clamping blocks 28 in sequence and is inserted back into the positioning ring 31, then the threaded block 32 is rotated to clamp the positioning ring 31, so that the reset spring 36 drives the sliding insertion rod 33 to rebound is prevented, at this time, the installation is completed, the connection between the port sealing element 2 and the piston cylinder 1 is established, when disassembling, only the threaded block 32 needs to be removed, then the sliding insertion rod 33 is reset into the positioning ring 31 under the action of the reset spring 36, and the port sealing element 2 can be removed by removing the limitation of the connecting clamping block 28 by the sliding insertion rod 33.

[0043] In the port seal 2, the rotating rod 24 is in direct contact with the piston rod 4, and the inner connecting ring 26, while fixing the rotating rod 24 in position with the outer rotating ring 25, can also allow the sealing ring 27 to rotate circumferentially with the piston rod 4, so as to adapt to the structural connection of the piston rod 4 in different directions, and the main fixed ring 21 is used to fix the rotating rod 24 on the piston cylinder 1;

[0044] And the device also has a special point, the main fixed ring 21 is provided with a plurality of electric buttons 22 and oil outlet holes 29, and three sealing rings 27 are arranged in the rotating rod 24, when the leaked oil in the piston cylinder 1 passes through the sealing ring 27, part of the fine oil will enter the oil outlet hole 29, and finally penetrate to the silicone rubber ring 23, at this time, the silicone rubber ring 23 will swell after contacting the oil, block the oil leakage position, at the same time, when overhauling, the expansion degree of the silicone rubber ring 23 can be observed to observe whether the oil leakage is serious, and the silicone rubber ring 23 will also press the electric button 22 when swelling, to inform the staff that the piston cylinder 1 and the piston rod 4 are connected at the oil leakage position, and timely discovery and remediation.

[0045] The electronic components and modules used in the content of the utility model can be the parts commonly used in the market at present, which can realize the specific functions in the case, and the specific type and size can be selected and adjusted according to actual needs.

[0046] The above shows and describes the basic principles, main features and advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hollow piston rod with an end closure, comprising a piston barrel (1), characterized in that: The piston rod (4) is slidably connected in the piston cylinder (1), and the port seal (2) is clamped on the top of the piston cylinder (1), and the top end of the piston rod (4) penetrates and extends out of the top of the port seal (2). The piston cylinder (1) is provided with a connecting piece (3), and the port seal (2) is locked by the connecting piece (3).

2. A hollow piston rod with an end closure according to claim 1, characterized in that: The port seal (2) comprises a main fixed ring (21), a rotating rod (24) is rotatably connected in the main fixed ring (21), the inner wall of the rotating rod (24) is slidably connected with the piston rod (4), oil outlets (29) are formed in the main fixed ring (21) and the rotating rod (24), and the oil outlets (29) extend to the surface of the main fixed ring (21) away from the rotating rod (24), a plurality of electric buttons (22) are mounted on the surface of the main fixed ring (21), and a silicone rubber ring (23) is further coated on the main fixed ring (21).

3. A hollow piston rod with an end closure according to claim 2, characterized in that: A plurality of sealing rings (27) are arranged at the contact position of the rotating rod (24) and the piston rod (4), and the sealing rings (27) and the oil outlets (29) are staggered in the vertical direction.

4. A hollow piston rod with an end closure according to claim 2, characterized in that: An outer rotating ring (25) is mounted on the top and the bottom of the main fixed ring (21), an inner connecting ring (26) is rotatably connected in each outer rotating ring (25), a plurality of balls are filled in the rotating connection position of each outer rotating ring (25) and the adjacent inner connecting ring (26), and the surfaces of the two outer rotating rings (25) and the rotating rod (24) are fixed.

5. A hollow piston rod with an end closure according to claim 2, characterized in that: A connecting clamping block (28) is mounted on the bottom of the main fixed ring (21), and the main fixed ring (21) is clamped with the connecting piece (3) through the connecting clamping block (28).

6. A hollow piston rod with an end closure according to claim 2, characterized in that: The connecting piece (3) comprises a positioning ring (31), a sliding insertion rod (33) is slidably connected in the positioning ring (31), and a threaded block (32) is threadedly connected on the positioning ring (31) and is threadedly connected with the sliding insertion rod (33) penetrating the positioning ring (31); The sliding insertion rod (33) is clamped with the plurality of connecting clamping blocks (28) in sequence and then inserted into the positioning ring (31).

7. A hollow piston rod with an end closure according to claim 6, characterized in that: A reset spring (36) is arranged in the positioning ring (31), one end of the reset spring (36) is connected with the positioning ring (31), and the other end of the reset spring (36) is connected with the sliding insertion rod (33).

8. A hollow piston rod with an end closure according to claim 6, characterized in that: A handle (35) is mounted on the sliding insertion rod (33), the positioning ring (31) is provided with the handle (35), the handle (35) penetrates the positioning ring (31) and is slidably connected with a sliding groove (34).

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