A telescopic oil pipe

Abstract

The utility model discloses a telescopic oil pipe, comprising: an outer pipe and an inner pipe, the inner pipe is movably sleeved in the outer pipe; the rear end of the outer pipe is provided with a hydraulic station joint for connecting to a hydraulic station, the front end of the inner pipe is provided with a cylinder joint for connecting to an oil cylinder, and the inner pipe is communicated with the outer pipe; the rear end of the inner pipe is closed, and an oil filling port is provided in the middle thereof, and the oil filling port moves back and forth between the two ends of the outer pipe with the relative telescopic movement of the inner pipe and the outer pipe. The embodiment of the utility model uses a sleeved outer pipe and an inner pipe that can be telescopically connected to each other as the oil pipe for connecting the oil cylinder and the hydraulic station, so that the position between the oil cylinder and the hydraulic station can be set more flexibly, and compared with a soft oil pipe, it also saves more space, making the layout and setting of the overall equipment more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a telescopic oil pipe. Background Art

[0002] With the progress of society and technology, hydraulic presses play an important role in current production activities. Hydraulic presses are machines that use liquid static pressure to process metal, plastic, rubber, wood, powder and other products. They are often used in forging, stamping, cold extrusion, straightening, bending, flanging, sheet metal drawing, powder metallurgy, press fitting and other pressing and forming processes.

[0003] The oil tank of a traditional hydraulic press is mostly placed separately from the oil cylinder in the hydraulic station, and then connected by a soft oil pipe to facilitate the back and forth movement of the oil cylinder. However, this type of soft oil pipe is often set to a long length, resulting in the overall structure of the equipment being not compact enough and occupying a large amount of space. Utility Model Content

[0004] In view of this, the utility model provides a telescopic oil pipe, which is used to solve the problem that the soft oil pipe in the prior art will cause the equipment structure to be not compact enough and occupy a large space.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides: a telescopic oil pipe, comprising: an outer pipe and an inner pipe, wherein the inner pipe is movably sleeved in the outer pipe;

[0006] The rear end of the outer tube is provided with a hydraulic station connector for connecting to a hydraulic station, the front end of the inner tube is provided with a cylinder connector for connecting to an oil cylinder, and the inner tube is in communication with the outer tube;

[0007] The rear end of the inner tube is closed, and an oil filling port is arranged in the middle thereof. The oil filling port moves back and forth between the two ends of the outer tube as the inner tube and the outer tube move relative to each other.

[0008] Preferably, the outer tube is coaxially arranged with the inner tube, and the inner diameter of the outer tube is greater than the outer diameter of the inner tube.

[0009] Preferably, the length of the outer tube is shorter than the length of the inner tube.

[0010] Preferably, sealing sleeves are respectively provided at both ends of the outer tube, and the inner ring of the sealing sleeve is slidably connected to the outer wall of the inner tube.

[0011] Preferably, the sealing sleeve comprises a sealing ring and a dust ring, and the sealing ring is located on the inner side of the dust ring.

[0012] Preferably, the rear end of the outer tube is connected to a cylindrical protective cover, and the rear end of the inner tube is movably connected to the protective cover.

[0013] Preferably, the length of the protective cover is not less than the distance from the rear end of the inner tube to the oil filling port.

[0014] Preferably, the inner diameter of the protective cover is equal to the inner diameter of the outer tube.

[0015] Preferably, a mounting seat is provided on the outer tube, and the mounting seat is used to fix the outer tube on the hydraulic station.

[0016] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0017] After adopting the above-mentioned telescopic oil pipe, the outer pipe and the inner pipe that can be telescoped to each other are used as the oil pipe to connect the oil cylinder and the hydraulic station, so that the position between the oil cylinder and the hydraulic station can be set more flexibly. At the same time, compared with soft oil pipes, it also saves more space, making the layout and setting of the overall equipment more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] in:

[0020] Figure 1 This is a schematic diagram of the overall structure of the telescopic oil pipe proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the explosion structure of the telescopic oil pipe proposed by the utility model;

[0022] Figure 3 The utility model is a schematic diagram of a cross-sectional structure of the telescopic oil pipe.

[0023] Figure numerals: 10, outer tube; 11, hydraulic station joint; 12, sealing sleeve; 121, sealing ring; 122, dust ring; 13, protective cover; 14, mounting seat; 20, inner tube; 21, cylinder joint; 22, oil filling port. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0027] like Figure 1-3 The example shown is an embodiment provided by the utility model.

[0028] The embodiment of the utility model provides a telescopic oil pipe, comprising: an outer pipe 10 and an inner pipe 20, wherein the inner pipe 20 is movably sleeved in the outer pipe 10 and can be telescopic in the outer pipe 10. Specifically, a hydraulic station joint 11 for connecting to a hydraulic station is provided at the rear end of the outer pipe 10, and a cylinder joint 21 for connecting to an oil cylinder is provided at the front end of the inner pipe 20, and the interface direction of the cylinder joint 21 and the hydraulic station joint 11 can be in the same direction as the axial direction of the inner pipe 20 and the outer pipe 10, or can be opened from the side walls of the inner pipe 20 and the outer pipe 10, which can be selected according to the actual equipment installation position, the inner pipe 20 is connected with the outer pipe 10, and the oil of the hydraulic station can be passed from the hydraulic station joint 11 into the rear end of the outer pipe 10, and then passed from the front end of the inner pipe 20 into the cylinder joint 21 and injected into the oil cylinder. The rear end of the inner tube 20 is closed, and an oil filling port 22 is arranged in the middle thereof. The outer tube 10 and the inner tube 20 are connected through the oil filling port 22. The oil filling port 22 moves back and forth between the two ends of the outer tube 10 as the inner tube 20 and the outer tube 10 move relative to each other. When the inner tube 20 extends out of the outer tube 10 to the maximum length, the oil filling port 22 does not exceed the front end of the outer tube 10. When the inner tube 20 is retracted into the outer tube 10 to the minimum length, the oil filling port 22 does not exceed the rear end of the outer tube 10, so that the oil filling port 22 is always within the tube cavity of the outer tube 10, and the connection between the inner tube 20 and the outer tube 10 is always maintained, and no blockage or oil leakage occurs. After adopting the above-mentioned telescopic oil pipe, the outer tube 10 and the inner tube 20 that can be telescopically connected are used as the oil pipe for connecting the oil cylinder and the hydraulic station, so that the position between the oil cylinder and the hydraulic station can be set more flexibly. At the same time, compared with the soft oil pipe, it also saves more space, making the layout and setting of the overall equipment more compact.

[0029] Specifically, the outer tube 10 and the inner tube 20 are coaxially arranged, and the inner diameter of the outer tube 10 is larger than the outer diameter of the inner tube 20, so that an oil supply channel can be reserved between the outer tube 10 and the inner tube 20 for oil circulation, which is convenient for oil transportation between the hydraulic station and the oil cylinder. In addition, the length of the outer tube 10 is smaller than the length of the inner tube 20, which is convenient for controlling the total length of the outer tube 10 and the inner tube 20 and controlling the size of the space occupied by them.

[0030] Specifically, sealing sleeves 12 are respectively provided at both ends of the outer tube 10, and the inner ring of the sealing sleeve 12 is slidably connected to the outer wall of the inner tube 20, so as to seal the two ends of the oil delivery channel between the outer tube 10 and the inner tube 20 to prevent oil leakage, wherein the sealing sleeve 12 includes a sealing ring 121 and a dust ring 122, wherein the sealing ring 121 is located on the inner side of the dust ring 122, and the sealing ring 121 is used to seal the two ends of the oil delivery channel, and the dust ring 122 is arranged on the outside to prevent dust from entering the oil delivery channel.

[0031] Furthermore, the rear end of the outer tube 10 is connected with a cylindrical protective cover 13, and the rear end of the inner tube 20 is movably plugged with the protective cover 13, which can prevent the rear end of the inner tube 20 from colliding with people or objects around during the extension and contraction of the inner tube 20 in the outer tube 10, wherein the length of the protective cover 13 is not less than the distance from the rear end of the inner tube 20 to the oil filling port 22, so that the protective cover 13 can completely accommodate the extended length of the rear end of the inner tube 20. In addition, the inner diameter of the protective cover 13 is equal to the inner diameter of the outer tube 10, which is sufficient to accommodate the extension and contraction of the inner tube 20, and is also convenient for connection with the outer tube 10.

[0032] Specifically, the outer tube 10 is provided with mounting seats 14 , two of which are spaced apart at both ends of the outer tube 10 or one is installed at the front end and the other is close to the rear end, and the mounting seats 14 are used to fix the outer tube 10 on the hydraulic station.

[0033] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A telescopic oil pipe, characterized in that: include: An outer tube (10) and an inner tube (20), wherein the inner tube (20) is movably sleeved in the outer tube (10); The rear end of the outer tube (10) is provided with a hydraulic station connector (11) for connecting to a hydraulic station, the front end of the inner tube (20) is provided with a cylinder connector (21) for connecting to an oil cylinder, and the inner tube (20) is in communication with the outer tube (10); The rear end of the inner tube (20) is closed, and an oil filling port (22) is provided in the middle thereof. The oil filling port (22) moves back and forth between the two ends of the outer tube (10) as the inner tube (20) and the outer tube (10) move relative to each other.

2. The telescopic oil pipe according to claim 1, characterized in that: The outer tube (10) and the inner tube (20) are arranged coaxially, and the inner diameter of the outer tube (10) is greater than the outer diameter of the inner tube (20).

3. The telescopic oil pipe according to claim 2, characterized in that: The length of the outer tube (10) is shorter than the length of the inner tube (20).

4. The telescopic oil pipe according to claim 3, characterized in that: Sealing sleeves (12) are respectively provided at both ends of the outer tube (10), and the inner ring of the sealing sleeve (12) is slidably connected to the outer wall of the inner tube (20).

5. The telescopic oil pipe according to claim 4, characterized in that: The sealing sleeve (12) comprises a sealing ring (121) and a dustproof ring (122), wherein the sealing ring (121) is located on the inner side of the dustproof ring (122).

6. The telescopic oil pipe according to claim 3, characterized in that: The rear end of the outer tube (10) is connected to a cylindrical protective cover (13), and the rear end of the inner tube (20) is movably plugged into the protective cover (13).

7. The telescopic oil pipe according to claim 6, characterized in that: The length of the protective cover (13) is not less than the distance from the rear end of the inner tube (20) to the oil filling port (22).

8. The telescopic oil pipe according to claim 7, characterized in that: The inner diameter of the protective cover (13) is equal to the inner diameter of the outer tube (10).

9. The telescopic oil pipe according to claim 1, characterized in that: The outer tube (10) is provided with a mounting seat (14), and the mounting seat (14) is used to fix the outer tube (10) on a hydraulic station.

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