CN216951101U - Detachable hydraulic cylinder oil pipe structure and hydraulic cylinder - Google Patents

Abstract

The utility model relates to a hydraulic device and discloses a detachable hydraulic cylinder oil pipe structure and a hydraulic cylinder, wherein the oil pipe structure comprises an oil port, a valve seat, an oil pipe, a hinged seat component, a first rubber pipe assembly and a second rubber pipe assembly, the oil port is communicated with a rod cavity of the hydraulic cylinder, the hinged seat component is communicated with a rodless cavity of the hydraulic cylinder, the oil port is connected with one liquid supply pipeline of the valve seat through the first rubber pipe assembly, one end of the oil pipe is connected with the other liquid supply pipeline of the valve seat through the second rubber pipe assembly, the other end of the oil pipe is connected with the hinged seat component arranged on the hydraulic cylinder, a plurality of limiting components are further arranged on the oil pipe, and the distance between every two adjacent limiting components is smaller than the length of the oil pipe between every two adjacent limiting components. The oil pipe structure can reduce the influence of the vibration of the hydraulic cylinder on the connection node and reduce the damage to the oil pipe connection structure caused by the expansion caused by heat and contraction caused by cold of the oil pipe; the hydraulic cylinder can reduce the influence of vibration on the oil pipe structure connecting node arranged on the hydraulic cylinder.

Description

Detachable hydraulic cylinder oil pipe structure and hydraulic cylinder

Technical Field

The utility model relates to a hydraulic device, in particular to a detachable hydraulic cylinder oil pipe structure. In addition, still relate to a pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The reciprocating motion device has simple structure and reliable work, can avoid a speed reducer when the reciprocating motion is realized, has no transmission clearance, and moves stably, thereby being widely applied to hydraulic systems of various machines.

The pneumatic cylinder mainly used is the accurate control of great power, because use for incompressible fluid in the pneumatic cylinder, efficiency is higher to can provide unanimous power output, this is difficult to do in pneumatic or mechanical drive system, and the pneumatic cylinder high temperature resistant environment can work in the very high environment of temperature moreover.

But prior art's hydraulic cylinder is through external with the oil pipe structure, with oil pipe, long oil pipe with oil mouth seat, disk seat through welded connection together to because the height of oil mouth seat, disk seat is generally lower, the oil pipe is little with the welding space of oil mouth seat, disk seat, it is very inconvenient to weld, the difficult assurance of welding quality. In addition, because the external oil pipe adopts a welding mode, the external oil pipe cannot be replaced, if the oil pipe is damaged by collision or the welding line fails due to fatigue, the repairing time is long, the repairing effect is difficult to guarantee, and secondary failure and oil leakage are easily caused. As shown in fig. 1, the long oil pipe at the right end is often long, generally more than 3 meters, so that the oil pipe needs to be fixed on the cylinder barrel through a pipe clamp so as to reduce the vibration of the oil pipe. When the oil pipe is long, the welding seam is easy to crack under the action of thermal expansion and cold contraction, when the oil cylinder vibrates greatly, the oil pipe follows the vibration, and the welding seam between the oil pipe and the oil port seat and the valve seat is easy to crack under the action of external vibration or internal oil pressure, so that the oil leakage failure of the hydraulic oil cylinder is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem of providing a detachable hydraulic cylinder oil pipe structure, which can reduce the influence of the vibration of a hydraulic cylinder on the connection node of the oil pipe structure and reduce the damage to the oil pipe connection structure caused by expansion with heat and contraction with cold.

Another technical problem to be solved by the present invention is to provide a hydraulic cylinder, which can reduce the influence of vibration on the oil pipe structure connection node arranged on the hydraulic cylinder.

In order to solve the technical problem, the utility model provides a detachable hydraulic cylinder oil pipe structure, the oil pipe structure is arranged on the hydraulic cylinder and comprises an oil port, a valve seat, an oil pipe, a hinged seat component, a first rubber pipe assembly and a second rubber pipe assembly, the oil port is communicated with a rod cavity of the hydraulic cylinder, the hinged seat component is communicated with a rodless cavity of the hydraulic cylinder, the oil port is detachably connected with a liquid supply pipeline of the valve seat through the first rubber pipe assembly, one end of the oil pipe is detachably connected with the other liquid supply pipeline of the valve seat through the second rubber pipe assembly, the other end of the oil pipe is connected with a hinged seat component arranged on the hydraulic cylinder, a plurality of limiting components are arranged on the oil pipe, and the distance between the adjacent limiting assemblies is smaller than the length of the oil pipe between the adjacent limiting assemblies.

Preferably, the articulated seat subassembly includes articulated seat and articulated connector, the inside cavity of articulated connector, just the well hollow portion of articulated connector with the rodless chamber of pneumatic cylinder is linked together still the symmetry has seted up the connector on the articulated connector, the connector passes through articulated seat with oil pipe is linked together. Through this preferred technical scheme, lead to articulated seat and be linked together between articulated connector and the oil pipe to the stable fuel feeding in oil tank is passed through oil pipe in the hydraulic cylinder rodless chamber.

Further preferably, the oil port is connected with the first rubber tube assembly through a first connector, one liquid supply pipeline of the valve seat is connected with the first rubber tube assembly through a second connector, and the other liquid supply pipeline of the valve seat is connected with the second rubber tube assembly through a third connector. Through this preferred technical scheme, the rubber tube assembly all passes through the joint with the junction of hydraulic fluid port and disk seat as the connecting piece, and the setting of joint is convenient for rubber tube assembly's dismantlement and installation.

Preferably, the second rubber pipe assembly is communicated with the oil pipe through a welding joint. Through this preferred technical scheme, adopt welded joint to carry out the mode of being connected between second rubber tube assembly and the oil pipe, can improve the leakproofness of pipeline junction, avoid taking place the seepage at the pipeline junction.

Further preferably, the valve seat is connected with the second joint and the third joint in a threaded manner and is sealed by a sealing element. Through this preferred technical scheme, valve seat and second connect and adopt threaded connection between the third to the dismouting of connector is convenient for.

Preferably, the connection of the rubber tube assembly, the first joint, the second joint, the third joint and the welding joint is threaded. Through this preferred technical scheme, all adopt threaded connection's mode between hose assembly and first joint, second joint, third joint and the welded joint to the dismouting of hose assembly can be convenient for.

Further preferably, both ends of the oil pipe are respectively welded with the welding joint and the hinge seat.

Preferably, articulated seat passes through articulated connector with the cylinder bottom threaded connection of pneumatic cylinder, just still be provided with the sealing member in the articulated seat with can right the articulated seat seals. Through this preferred technical scheme, will articulate the seat and connect on the pneumatic cylinder through articulated connector, and the cylinder bottom threaded connection of articulated connector and pneumatic cylinder to this can be convenient for articulate the dismantlement change of seat and articulated connector.

Further preferably, the rubber tube assembly with first joint, second joint, third joint and welded joint's connection all adopts flange bolted connection, first joint with adopt flange bolted connection between the hydraulic fluid port, second joint, third joint with adopt flange bolted connection between the disk seat, articulated connector with adopt flange bolted connection between the cylinder bottom of pneumatic cylinder.

A hydraulic cylinder comprising a detachable hydraulic cylinder tube structure according to any of the preferred embodiments described above.

According to the detachable hydraulic cylinder oil pipe structure, the influence of hydraulic cylinder vibration on welding seams can be effectively reduced through the rubber pipe assembly arranged in a segmented mode, in addition, the fault tolerance rate is higher when the rubber oil pipe is installed, the rubber pipe assembly cannot be installed by mistake, the rubber pipe assembly and related parts can be conveniently disassembled and replaced, in addition, the length of the oil pipe between the adjacent limiting assemblies is longer than the distance between the adjacent limiting assemblies, when the oil pipe expands with heat and contracts with cold, the surplus oil pipe between the limiting assemblies forms a buffer area, the expansion or contraction degree of the oil pipe is adapted, and the damage to the connecting nodes caused by the expansion with heat and contraction with cold of the oil pipe can be effectively reduced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic diagram of a conventional hydraulic cylinder oil tube structure;

FIG. 2 is a schematic view of the external oil pipe connection structure of the present invention;

FIG. 3 is a schematic view of the oil port structure of the present invention;

FIG. 4 is a schematic view of a joint structure of the present invention;

FIG. 5 is a schematic view of the connection structure of the oil port, the joint and the rubber tube assembly of the present invention;

FIG. 6 is a schematic view of the hose assembly of the present invention;

FIG. 7 is a schematic view of the connection structure of the valve seat and the joint according to the present invention;

FIG. 8 is a schematic view of the connection structure of the hose assembly and the joint of the present invention;

FIG. 9 is a schematic view of the welding structure of the long oil pipe with the welded joint and the hinge seat of the present invention;

FIG. 10a is a front view of the hinge base of the present invention;

FIG. 10b is a cross-sectional view of the hinge base of the present invention;

FIG. 10c is a side view of the hinge base of the present invention;

FIG. 10d is a cross-sectional view of the hinged connector of the present invention;

FIG. 10e is a top view of the hinged connector of the present invention;

FIG. 10f is a schematic view of the hinge assembly of the present invention and the connection to the cylinder bottom;

FIG. 11 is a schematic view of a long oil tube configuration of the present invention;

FIG. 12 is a schematic view of a thermal expansion and contraction buffer zone of a long oil tube according to the present invention;

FIG. 13 is a schematic view of the structure of the present invention using SAE flange bolting.

Reference numerals

1 oil port 2 first joint

3 sealing element 4 first rubber pipe assembly

5 second joint 6 valve seat

7 third joint 8 second rubber pipe assembly

9 welded joint 10 pipe clamp

11 oil pipe 12 hinge seat

13 hinged seat connector 14 cylinder bottom

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, for example, the term "connected" may be a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

According to one embodiment of the detachable hydraulic cylinder oil pipe 11 structure, as shown in fig. 1 to 5, the oil pipe 11 structure is installed on a hydraulic cylinder, the oil pipe 11 structure comprises an oil port 1, a rubber pipe assembly, a valve seat 6, an oil pipe 11 and a hinged seat 12 assembly, the oil port 1 is communicated with a rod cavity of the hydraulic cylinder through welding so as to convey hydraulic oil in the rod cavity of the hydraulic cylinder into an oil tank through the oil port 1, and the hinged seat assembly is communicated with a rodless cavity of the hydraulic cylinder so as to convey hydraulic oil in the rodless cavity of the hydraulic cylinder into the oil tank through the hinged seat assembly. The rubber tube assembly comprises a first rubber tube assembly 4 and a second rubber tube assembly 8, wherein the first rubber tube assembly 4 is detachably connected with one liquid supply pipeline of the valve seat 6, the second rubber tube assembly 8 is detachably connected with the other liquid supply pipeline of the valve seat 6, the first rubber tube assembly 4 and the second rubber tube assembly 8 which are connected with the valve seat 6 are mainly made of rubber tubes, the pressure resistance of the rubber tube assembly is 420Bar, vibration is generated when the hydraulic cylinder works, the vibration is transmitted to the oil tube structure, but the efficiency of transmitting the vibration by the rubber tubes is far lower than that of the steel tubes due to the adoption of the rubber tubes, so that the influence of the vibration on the oil tube 11 structure can be effectively reduced, and the damage of the structural connection nodes of the oil tube 11 is avoided. And adopt the rubber tube to replace the steel pipe, when adopting the steel pipe to connect, need with steel pipe and the accurate matching of connection port, consequently, the steel pipe precision that needs is higher, in case produce the error between steel pipe or the link, then unable fine connection, even if connect the leakproofness of back connected node also can't guarantee by force, do not have certain fault-tolerant rate, and the rubber tube has better ductility for the steel pipe, the fault-tolerant rate is higher, it is more convenient to dismantle, it explains that first rubber tube assembly 4 and second rubber tube assembly 8 not only are limited to only adopting a rubber tube, also can adopt many short rubber tubes to link to each other and form a long rubber tube.

As shown in fig. 6, the other line of the valve seat 6 is connected to the oil tank of the hydraulic cylinder, and when the hydraulic cylinder is operated, hydraulic oil in the rod chamber and the rodless chamber of the hydraulic cylinder is finally input into the oil tank through the valve seat 6. In addition, as shown in fig. 11 to 12, the second hose assembly 8 is further connected to one end of an oil pipe 11, the other end of the oil pipe 11 is connected to a hinged seat assembly provided on the hydraulic cylinder, the oil pipe 11 is further provided with a plurality of limiting assemblies, the limiting assemblies preferably adopt pipe clamps 10 to limit and fix the oil pipe 11, and the spacing between two adjacent pipe clamps 10 is less than the length of the tubing 11 between two adjacent pipe clamps 10, i.e., the length of the oil pipe 11 is longer than the length between two adjacent pipe clamps 10, so that when the oil pipe 11 is heated to expand, a certain buffer space is reserved between the pipe clamps 10 to allow the oil pipe 11 to expand, and when the oil pipe 11 contracts due to cooling, because the length of the oil pipe 11 between the adjacent pipe clamps 10 is long, the size of the oil pipe 11 after being cooled and shrunk can be completely adapted, thereby effectively avoiding the damage to the connection node of the oil pipe structure after the oil pipe 11 expands with heat and contracts with cold.

In some embodiments of the detachable hydraulic cylinder oil pipe 11 structure of the present invention, as shown in fig. 10a to 10e, the hinged seat 12 assembly includes a hinged seat 12 and a hinged connector 13, wherein the hinged connector 13 is hollow, and the hinged connector 13 is symmetrically provided with a connecting port, so that the connecting port can be communicated with the oil pipe 11 through the hinged seat 12, thereby realizing stable delivery of hydraulic oil in the rodless cavity of the hydraulic cylinder. And, still be provided with sealing member 3 in the articulated connector 13 to prevent that articulated connector 13 and articulated seat 12 installation from accomplishing the back, the in-process hydraulic oil that carries out the oil transportation to the oil tank takes place the seepage at articulated seat 12 and the junction of articulated connector 13, thereby influences the stable transport of hydraulic oil.

According to an embodiment of the detachable hydraulic cylinder oil pipe 11 joint, as shown in fig. 7, an oil port 1 is connected with a first rubber pipe assembly 4 through a first joint 2, one liquid supply pipeline of a valve seat 6 is connected with the first rubber pipe assembly 4 through a second joint 5, the other liquid supply pipeline is connected with a second rubber pipe assembly 8 through a third joint 7, connectors are mounted at the connecting ends of the valve seat 6, the first rubber pipe assembly 4 and the second rubber pipe assembly 8, the valve seat 6 is connected with a rubber pipe through the second joint 5 and the third joint 7 serving as connecting pieces, so that the rubber pipe is detachable from the valve seat 6, and the connectors are used for connection, so that a better sealing effect can be achieved at the connecting nodes, and adverse conditions such as oil leakage are avoided.

An embodiment of a detachable hydraulic cylinder oil pipe 11 joint of the present invention is shown in fig. 8, a second rubber pipe assembly 8 is communicated with an oil pipe 11 through a welding joint 9, wherein the welding joint 9 is connected with the second rubber pipe assembly 8 by a threaded connection, the welding joint 9 is connected with the oil pipe 11 by a welding way to form an integral structure, and the above-mentioned connection way is adopted to connect various parts, compared with the integral welding way, on one hand, the parts are easier to adjust and replace, on the other hand, the excessive pressure generated on the connection node of the oil pipe structure can be avoided, because the oil pipe 11 is easy to expand with heat and contract with cold, after the integral welding is adopted, the oil pipe 11 is easy to generate pressure on the connection node after expanding with heat and contracting with cold, and the welding seam is easy to crack due to frequent contraction and vibration generated during the operation of the hydraulic cylinder, thereby affecting the sealing effect of the structure of the oil pipe 11.

In some embodiments of the detachable hydraulic cylinder oil pipe joint, the valve seat 6, the second joint 5 and the third joint 7 are in threaded connection, the sealing element 3 is arranged at the connection position, the sealing element 3 can ensure that oil leakage cannot occur in the oil transportation process, and the rubber pipe assembly is more easily detached compared with the integral welding mode because the rubber pipe assembly is connected with the valve seat 6 through the second joint 5 and the third joint 7.

According to some embodiments of the detachable hydraulic cylinder oil pipe joint, the connection of the rubber pipe assembly, the first joint 2, the second joint 5, the third joint 7 and the welding joint 9 is in threaded connection, so that the rubber pipe assembly is more convenient to disassemble and assemble, the sealing element 3 is arranged at the connection part of the rubber pipe assembly and each joint, the sealing performance of the rubber pipe after the connection with each joint can be guaranteed through the sealing element 3, and the oil leakage condition in the oil transportation process is avoided.

In an embodiment of the detachable hydraulic cylinder oil pipe 11 joint of the present invention, as shown in fig. 9, both ends of the oil pipe 11 are respectively welded with the welded joint 9 and the hinged seat 12, after welding, the oil pipe 11, the welded joint 9 and the hinged seat 12 form an integral structure, and then the integral structure is installed on the hydraulic cylinder through the hinged connector 13, and after the hinged seat 12 is installed, the hinged seat 12 can axially rotate on the hinged connector 13. Wherein, as shown in fig. 10f, the hinged connector 13 is in threaded connection with the cylinder bottom 14 of the hydraulic cylinder in a manner that the hinged base 12 can be detached at any time, that is, even though the oil pipe 11, the welding joint 9 and the hinge base 12 are formed as an integral structure, they can be easily disassembled through the hinge joint 13, it is more convenient to adopt a form of connecting the hinge joint 13 than a connection form of welding the hinge base 12 to the hydraulic cylinder, and it is convenient to replace worn or damaged parts, and in addition, the sealing element 3 is also arranged in the hinge seat 12, and the arrangement of the sealing element 3 ensures that hydraulic oil in the rodless cavity of the hydraulic cylinder cannot leak when flowing through the hinge seat 12, improves the sealing property of the hinge seat 12, so as to ensure that the oil leakage can not be generated in the process of oil transportation after the hinged connector 13 is communicated with the rodless cavity of the hydraulic cylinder.

According to an embodiment of the detachable hydraulic cylinder oil pipe 11 joint, as shown in fig. 13, a rubber hose assembly can be connected with a valve seat 6, an oil pipe 11, an oil port 1 and a connector in a threaded manner, the rubber hose assembly can be connected with a first joint 2, a second joint 5, a third joint 7 and a welding joint 9 in an SAE flange bolt manner, similarly, the first joint 2 can be connected with the oil port 1 in an SAE flange bolt manner, the second joint 5, the third joint 7 and the valve seat 6 can be connected in an SAE flange bolt manner, the hinged connector 13 can be connected with a cylinder bottom 14 of a hydraulic cylinder in an SAE flange bolt manner, and the parts can be conveniently disassembled, assembled and replaced in an SAE flange bolt manner, and the connection is tight, so that a good sealing effect is achieved.

An embodiment of the hydraulic cylinder of the present invention adopts the detachable hydraulic cylinder oil tube structure described in any of the above embodiments, and therefore, the hydraulic cylinder also has the beneficial effects brought by the technical solutions in the above embodiments of the oil tube structure.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, numerous simple modifications can be made to the technical solution of the utility model, including any suitable combination of specific features, and in order to avoid unnecessary repetition, the utility model will not be described in detail in relation to the various possible combinations. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (10)

1. The detachable hydraulic cylinder oil pipe structure is arranged on a hydraulic cylinder and is characterized by comprising an oil port (1), a valve seat (6), an oil pipe (11), an articulated seat component, a first rubber pipe assembly (4) and a second rubber pipe assembly (8), wherein the oil port (1) is communicated with a rod cavity of the hydraulic cylinder, the articulated seat component is communicated with a rodless cavity of the hydraulic cylinder, the oil port (1) is detachably connected with a liquid supply pipeline of the valve seat (6) through the first rubber pipe assembly (4), one end of the oil pipe (11) is detachably connected with another liquid supply pipeline of the valve seat (6) through the second rubber pipe assembly (8), the other end of the oil pipe (11) is connected with the articulated seat component arranged on the hydraulic cylinder, and a plurality of limiting components are further arranged on the oil pipe (11), and the distance between the adjacent limiting assemblies is smaller than the length of an oil pipe (11) between the adjacent limiting assemblies.

2. The detachable hydraulic cylinder oil pipe structure according to claim 1, wherein the hinged base assembly comprises a hinged base (12) and a hinged connector (13), the hinged connector (13) is hollow inside, the hollow part of the hinged connector (13) is communicated with the rodless cavity of the hydraulic cylinder, and the hinged connector (13) is further symmetrically provided with a connecting port, and the connecting port is communicated with the oil pipe (11) through the hinged base (12).

3. A demountable hydraulic cylinder oil pipe structure according to claim 2, wherein the oil port (1) is connected to the first rubber pipe assembly (4) through a first joint (2), one liquid supply line of the valve seat (6) is connected to the first rubber pipe assembly (4) through a second joint (5), and the other liquid supply line of the valve seat is connected to the second rubber pipe assembly (8) through a third joint (7).

4. A demountable hydraulic cylinder tube arrangement according to claim 3, wherein said second hose assembly (8) is in communication with said oil tube (11) via a welded joint (9).

5. A demountable hydraulic cylinder tubing arrangement according to claim 3, wherein the valve seat (6) is threaded with the second joint (5) and the third joint (7) and is sealed by a seal (14).

6. A demountable hydraulic cylinder tube arrangement according to claim 3, wherein the connection of the hose assembly to the first (2), second (5), third (7) and welded joints (9) is by screw threaded connection.

7. Demountable hydraulic cylinder tube arrangement according to claim 4, wherein both ends of the oil tube (11) are welded with the welded joint (9) and the hinge seat (12), respectively.

8. A detachable hydraulic cylinder pipe arrangement according to claim 7, characterized in that the hinge seat (12) is screwed to the cylinder bottom (15) of the hydraulic cylinder by means of the hinge joint (13), and that a seal (14) is arranged in the hinge seat (12) to enable sealing of the hinge seat (12).

9. The detachable hydraulic cylinder oil pipe structure according to claim 3, wherein the rubber pipe assembly is connected with the first joint (2), the second joint (5), the third joint (7) and the welding joint (9) through flange bolts, the first joint (2) is connected with the oil port (1) through flange bolts, the second joint (5), the third joint (7) is connected with the valve seat (6) through flange bolts, and the hinged joint (13) is connected with the cylinder bottom (15) of the hydraulic cylinder through flange bolts.

10. Hydraulic cylinder, characterized in that it comprises a detachable cylinder tube arrangement according to any of claims 1-9.

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