Piston cylinder type device with adjustable height

Abstract

The utility model discloses a height-adjustable piston cylinder type device, which comprises a frame body, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod, a piston rod and a piston rod, a first thread is arranged on the periphery of the upper oil cylinder, and the upper oil cylinder is arranged in the threaded hole in the vertical direction and is in threaded connection with the threaded hole through the first thread; through the threaded connection between the upper oil cylinder and the upper bottom plate, the upper oil cylinder can ascend or descend by rotating the upper oil cylinder, a manual pump mode in the prior art can be replaced, and when materials need to be pressed, only the upper oil cylinder needs to be rotated, the upper oil cylinder descends, the upper piston makes contact with the materials, and then the upper oil cylinder is started, so that the materials can be pressed. Pressure is applied to materials in an automatic pump mode, time can be effectively saved, the stroke of an upper piston of the upper oil cylinder can be shortened, the height of the whole device is reduced, and the size of the device is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of press technology, specifically a height-adjustable piston cylindrical device. Background Technology

[0002] Piston-cylinder type devices are also known as piston-cylinder type presses or piston-cylinder type high-pressure equipment.

[0003] Piston-cylinder apparatuses, as core equipment in modern high-pressure synthesis technology, play an irreplaceable role in fields such as superhard material preparation and deep Earth material simulation. Traditional apparatuses generally employ split-type hydraulic drive systems, which present several significant technical bottlenecks. During sample loading and pressure release phases, operators must frequently switch between manual and automatic pump modes. First, the manual pump mode is used to lower the piston until it contacts the material, then the automatic pump mode is switched to apply pressure. Each height adjustment takes approximately 5 minutes, severely impacting experimental efficiency. Furthermore, the coexistence of manual and automatic pumps further increases the volume of the piston-cylinder apparatus, further restricting the required space and installation location.

[0004] The relevant documents disclose a piston-cylinder type ultra-high temperature and high pressure device and its usage method, including an upper base plate, a lower base plate, and an upper oil cylinder, a lower oil cylinder, an upper piston, a lower piston, a transformer, a pressure sensor, heating elements, an upper piston seat, and a pressure chamber for holding samples, etc., disposed between the upper base plate and the lower base plate; the upper base plate and the lower base plate are both horizontally arranged and connected by multiple tie rods.

[0005] During the sample loading and pressure release phases of this high-temperature and high-pressure device, operators also need to frequently switch between manual and automatic pump modes, which affects experimental efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a height-adjustable piston cylindrical device to solve at least one of the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A height-adjustable piston cylindrical device, comprising:

[0009] The frame includes an upper base plate and a lower base plate fixedly connected to the upper base plate. Both the upper base plate and the lower base plate are arranged in a horizontal direction, and a threaded hole is opened in the middle of the upper base plate in a vertical direction.

[0010] The upper cylinder is provided with a downwardly extending upper piston. The outer circumference of the upper cylinder is provided with a first thread. The upper cylinder is disposed vertically in the threaded hole and is threadedly connected to the threaded hole through the first thread.

[0011] This utility model features a frame for mounting an upper hydraulic cylinder. Specifically, a lower base plate is used to mount an upper base plate, which in turn mounts the upper hydraulic cylinder. The upper hydraulic cylinder drives an upper piston to press down, applying pressure to the material. A threaded connection between the upper hydraulic cylinder and the upper base plate is achieved through a threaded connection between a first thread and a threaded hole. Since the upper base plate is fixed, rotating the upper hydraulic cylinder raises or lowers it. When the upper hydraulic cylinder can be raised and lowered in this way, it can replace the manual pump mode in the prior art. When it is necessary to apply pressure to the material, simply rotate the upper hydraulic cylinder to lower it, allowing the upper piston to contact the material. Then, restart the upper hydraulic cylinder to apply pressure to the material through an automatic pump mode. This effectively saves time, shortens the stroke of the upper piston of the upper hydraulic cylinder, reduces the overall height of the device, and shrinks its size.

[0012] Specifically, the upper base plate and the lower base plate are fixedly connected by multiple vertically arranged tie rods; the two ends of the tie rods pass through the upper base plate and the lower base plate respectively, and are fixedly connected to the upper base plate and the lower base plate by nuts. The tie rods are used to fix the upper base plate and the lower base plate together, and the nuts are used to fix the two ends of the tie rods to the upper base plate and the lower base plate respectively.

[0013] Furthermore, an installation cylinder is provided inside the threaded hole, and the upper cylinder is coaxially fixed inside the installation cylinder. The first thread is provided on the outer periphery of the installation cylinder so that the upper cylinder is threadedly connected to the threaded hole. The installation cylinder is used to realize the provision of the first thread on the outer periphery of the upper cylinder.

[0014] Specifically, the upper cylinder is provided with a hydraulic interface at the top, and the hydraulic interface is sealed and rotatably connected to a hydraulic pipeline. The hydraulic pipeline is connected to a hydraulic station. The hydraulic pipeline and hydraulic interface are used for the oil circuit connection between the upper cylinder and the hydraulic station. By sealing and rotatably connecting the hydraulic pipeline and the hydraulic interface, the hydraulic pipeline is not affected when the upper cylinder is rotated, so that the normal oil circuit connection between the upper cylinder and the hydraulic station can be maintained.

[0015] Furthermore, the hydraulic pipeline includes a connector and a hydraulic pipe. The hydraulic pipe is rotatably and sealedly connected to the hydraulic interface through the connector. The end of the hydraulic pipeline away from the hydraulic interface is connected to the hydraulic station. The flexible hose facilitates the hydraulic pipeline to rise and fall with the upper cylinder, and the connector facilitates the rotatable and sealed connection between the flexible hose and the hydraulic interface.

[0016] Furthermore, a sealed bearing is fixed inside the hydraulic interface, and the end of the connector away from the hydraulic pipe is in sealed rotational communication with the hydraulic interface through the sealed bearing. The sealed bearing enables a sealed rotational connection between the hydraulic interface and the connector.

[0017] Furthermore, the hydraulic interface protrudes beyond the upper cylinder, and a second thread is provided on the outer periphery of the hydraulic interface. A fixing cap is threadedly connected to the hydraulic interface through the second thread. The fixing cap has a clearance hole for the connector to pass through. The outer periphery of the connector protrudes to form an annular mounting ring. The fixing cap presses the mounting ring against the hydraulic interface. By cooperating with the fixing cap, the connector can be installed on the sealed bearing without affecting the rotation of the connector. The second thread facilitates the threaded connection between the fixing cap and the hydraulic interface.

[0018] Furthermore, the connector is fitted with a first sealing ring and a second sealing ring. The first sealing ring is located between the fixed cover and the mounting ring, and the second sealing ring is located between the mounting ring and the hydraulic interface. The first sealing ring is used to improve the sealing between the fixed cover and the mounting ring, and the second sealing ring is used to improve the sealing between the mounting ring and the hydraulic interface. The first and second sealing rings can improve the overall sealing between the connector and the hydraulic interface, and also facilitate the rotation of the connector. Specifically, the first sealing ring facilitates the rotation between the fixed cover and the mounting ring, and the second sealing ring facilitates the rotation between the mounting ring and the hydraulic port.

[0019] Furthermore, the lower base plate is provided with a lower oil cylinder, which has an upwardly extending lower piston. The lower piston is coaxially arranged with the upper piston, and the material can be pressurized from below through the lower oil cylinder.

[0020] Furthermore, an iron ring is coaxially provided on the upper oil cylinder. The iron ring is fixedly connected to the upper oil cylinder through several connecting rods. The iron ring and the upper oil cylinder are fixedly connected. By rotating the iron ring, the upper oil cylinder can be driven to rotate together. The iron ring is easy to hold. By setting the iron ring, it is easier to rotate the upper oil cylinder, thereby making it easier to raise and lower the upper oil cylinder.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention achieves a threaded connection between the upper cylinder and the upper base plate through a threaded connection between the first thread and the threaded hole. Since the upper base plate is in a fixed state, rotating the upper cylinder can raise or lower it. When the upper cylinder can be raised and lowered in this way, it can replace the manual pump mode in the prior art. When it is necessary to apply pressure to the material, simply rotate the upper cylinder to lower it, so that the upper piston contacts the material, and then start the upper cylinder to apply pressure to the material through the automatic pump mode. This can effectively save time and shorten the stroke of the upper piston of the upper cylinder, thereby reducing the height of the entire device and shrinking its size. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a height-adjustable piston cylindrical device in this embodiment;

[0024] Figure 2 This is a cross-sectional view of the hydraulic interface in this embodiment;

[0025] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0026] In the diagram: 1. Frame; 101. Upper base plate; 102. Lower base plate; 103. Tie rod; 104. Nut; 2. Upper cylinder; 3. Upper piston; 4. Mounting cylinder; 5. Hydraulic interface; 6. Hydraulic pipeline; 601. Connector; 602. Hydraulic pipe; 7. Sealed bearing; 8. Fixing cover; 9. Mounting ring; 10. First sealing ring; 11. Second sealing ring; 12. Lower cylinder; 13. Lower piston; 14. Iron ring; 15. Connecting rod. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figure 1 and Figure 2 As shown, this embodiment provides a height-adjustable piston cylindrical device, including a frame 1 and an upper oil cylinder 2.

[0029] The frame 1 includes an upper base plate 101 and a lower base plate 102 fixedly connected to the upper base plate 101. Both the upper base plate 101 and the lower base plate 102 are arranged horizontally. The upper base plate 101 and the lower base plate 102 are fixedly connected by multiple vertically arranged tie rods 103. In this embodiment, the number of tie rods 103 is preferably three. Figure 1Only two tie rods 103 are shown in the diagram, but not limited to three. Three tie rods 103 between the upper base plate 101 and the lower base plate 102 provide better stability. The two ends of the tie rods 103 pass through the upper base plate 101 and the lower base plate 102 respectively, and are fixedly connected to both base plates 101 and 102 by nuts 104. Specifically, the top end of the tie rod 103 passes through the upper base plate 101, and nuts 104 are threaded onto both the top and bottom surfaces of the upper base plate 101, securing the top end of the tie rod 103 to the upper base plate 101 through the cooperation of these two nuts 104. The bottom end of the tie rod 103 passes through the lower base plate 102, and nuts 104 are threaded onto both the top and bottom surfaces of the lower base plate 102, securing the bottom end of the tie rod 103 to the lower base plate 102 through the cooperation of these two nuts 104.

[0030] The upper cylinder 2 is provided with an upper piston 3 extending downward. The outer periphery of the upper cylinder 2 is provided with a first thread. A threaded hole is opened in the middle of the upper base plate 101 along the vertical direction. The upper cylinder 2 is located in the threaded hole along the vertical direction and is threadedly connected to the threaded hole through the first thread.

[0031] In order to facilitate the setting of the first thread on the outer periphery of the upper cylinder 2, in this embodiment, an installation cylinder 4 is provided in the threaded hole, the upper cylinder 2 is coaxially fixed in the installation cylinder 4, and the first thread is set on the outer periphery of the installation cylinder 4, so as to realize the setting of the first thread on the outer periphery of the upper cylinder 2, thereby making the upper cylinder 2 threadedly connected to the threaded hole. The outer diameter of the upper cylinder 2 matches the inner diameter of the installation cylinder 4, and the upper cylinder 2 and the installation cylinder 4 are fixed by welding.

[0032] In this embodiment, the first thread is a thread with a self-locking function.

[0033] In this embodiment, the upper cylinder 2 is a single-pipe cylinder, that is, the upper cylinder 2 is connected to the hydraulic station through only one pipeline.

[0034] Specifically, such as Figure 3 As shown, the top of the upper cylinder 2 is provided with a hydraulic interface 5, which is sealed and rotatably connected to a hydraulic pipeline 6. The hydraulic pipeline 6 is connected to the hydraulic station, and the hydraulic interface 5 is coaxially arranged with the upper cylinder 2.

[0035] Specifically, the hydraulic pipeline 6 includes a connector 601 and a hydraulic pipe 602. The hydraulic pipe 602 is rotatably and sealedly connected to the hydraulic interface 5 through the connector 601. The end of the hydraulic pipeline 6 away from the hydraulic interface 5 is connected to the hydraulic station. In this embodiment, the hydraulic pipe 602 is a flexible hose.

[0036] Specifically, such as Figure 3As shown, a sealing bearing 7 is fixedly sealed inside the hydraulic interface 5. The end of the connector 601 away from the hydraulic pipe 602 is in sealed rotational communication with the hydraulic interface 5 through the sealing bearing 7. The sealing bearing 7 enables a sealed rotational connection between the hydraulic interface 5 and the connector 601. The outer wall of the outer ring of the sealing bearing 7 and the inner wall of the hydraulic interface 5 can be sealed and fixed by welding. The inner wall of the inner ring of the sealing bearing 7 can be sealed and fixed by welding to the outer peripheral wall of the connector 601.

[0037] Specifically, the hydraulic interface 5 protrudes beyond the upper cylinder 2. A second thread is provided on the outer periphery of the hydraulic interface 5. A fixing cover 8 is threaded onto the hydraulic interface 5 through the second thread. The fixing cover 8 has a clearance hole for the connector 601 to pass through. The outer periphery of the connector 601 protrudes to form an annular mounting ring 9. The fixing cover 8 presses the mounting ring 9 against the hydraulic interface 5. The fixing cover 8 and the mounting ring 9 can further strengthen the connection between the connector 601 and the hydraulic interface 5 and prevent the connector 601 from falling off. The mounting ring 9 can be welded to the outer periphery of the connector 601 after the connector 601 is welded to the sealing bearing 7. A certain gap can be left between the mounting ring 9 and the hydraulic interface 5 and the sealing bearing 7 to avoid direct friction between the mounting ring 9 and the hydraulic interface 5 and the sealing bearing 7.

[0038] Furthermore, a first sealing ring 10 and a second sealing ring 11 are fitted onto the connector 601. The first sealing ring 10 is located between the fixed cover 8 and the mounting ring 9, and the second sealing ring 11 is located between the mounting ring 9 and the hydraulic interface 5. The top of the hydraulic interface 5 can be flush with the top of the sealing bearing 7. In this way, the second sealing ring 11 can simultaneously improve the sealing performance between the mounting ring 9 and the sealing bearing 7.

[0039] Furthermore, a lower oil cylinder 12 is provided on the lower base plate 102, and the lower oil cylinder 12 is provided with an upwardly extending lower piston 13. The lower piston 13 is coaxially arranged with the upper piston 3. The lower oil cylinder 12 can be fixed to the lower base plate 102 by welding or bolt connection. A pressure plate and a water cooling plate can also be provided at the top of the lower piston 13 to facilitate the placement of the material to be pressurized, as well as to facilitate pressure transmission, heating and cooling.

[0040] Furthermore, an iron ring 14 is coaxially provided on the upper oil cylinder 2. The iron ring 14 is fixedly connected to the upper oil cylinder 2 through several connecting rods 15. The iron ring 14 can be set above the upper oil cylinder 2. The inner diameter of the iron ring 14 can be larger than the outer diameter of the upper oil cylinder 2, so as to facilitate the upper oil cylinder 2 to be raised and lowered by rotating the iron ring 14. Both ends of the connecting rods 15 are fixed to the iron ring 14 and the upper oil cylinder 2 respectively by welding.

[0041] It should be noted that although the present invention has been disclosed above with specific embodiments, the above embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A height-adjustable piston cylinder device, characterized in that The utility model relates to a kind of hydraulic lifting device, including: Frame body, including upper bottom plate and with the lower bottom plate of fixed connection of upper bottom plate, the upper bottom plate and the lower bottom plate are along horizontal direction arrangement, upper bottom plate middle part is provided with a threaded hole along vertical direction; Upper oil cylinder, the upper oil cylinder is provided with downward extending upper piston, the outer periphery of the upper oil cylinder is provided with first thread, the upper oil cylinder is arranged in the threaded hole along vertical direction and is connected with the threaded hole by the first thread.

2. A height adjustable piston cylinder type device as claimed in claim 1, characterized in that The upper bottom plate and the lower bottom plate are fixedly connected by a plurality of vertically arranged tie rods;The two ends of the tie rod are respectively threaded through the upper bottom plate and the lower bottom plate, and are fixedly connected with the upper bottom plate and the lower bottom plate by nut.

3. A height adjustable piston cylinder type device as claimed in claim 1, characterized in that The threaded hole is provided with a mounting cylinder, the upper oil cylinder is coaxially fixed in the mounting cylinder, and the first thread is arranged on the outer periphery of the mounting cylinder to threadedly connect the upper oil cylinder with the threaded hole.

4. A height adjustable piston cylinder type device as claimed in claim 1, characterized in that The top of the upper oil cylinder is provided with a hydraulic interface, the hydraulic interface is sealingly and rotatably connected with a hydraulic pipeline, and the hydraulic pipeline is in communication with a hydraulic station.

5. A height adjustable piston cylinder type device as claimed in claim 4, characterized in that The hydraulic pipeline includes a connector and a hydraulic pipe, the hydraulic pipe is rotatably and sealingly connected with the hydraulic interface through the connector, and one end of the hydraulic pipeline away from the hydraulic interface is in communication with the hydraulic station.

6. A height adjustable piston cylinder type device as claimed in claim 5, characterized in that The hydraulic interface is sealingly and fixedly provided with a sealing bearing, and one end of the connector away from the hydraulic pipe is sealingly and rotatably connected with the hydraulic interface through the sealing bearing.

7. A height adjustable piston cylinder type device as claimed in claim 5, characterized in that The hydraulic interface protrudes outward of the upper oil cylinder, the outer periphery of the hydraulic interface is provided with a second thread, and a fixed cover is threadedly connected with the hydraulic interface through the second thread, the fixed cover is provided with a clearance hole for the connector to pass through, the outer periphery of the connector protrudes to form an annular mounting ring, and the fixed cover presses the mounting ring against the hydraulic interface.

8. A height adjustable piston cylinder type device as claimed in claim 7, characterized in that The connector is provided with a first sealing ring and a second sealing ring, the first sealing ring is located between the fixed cover and the mounting ring, and the second sealing ring is located between the mounting ring and the hydraulic interface.

9. A height adjustable piston cylinder type device as claimed in claim 1, characterized in that The lower bottom plate is provided with a lower oil cylinder, the lower oil cylinder is provided with upward extending lower piston, and the lower piston is coaxially arranged with the upper piston.

10. A height adjustable piston cylinder type device as claimed in claim 1, characterized in that The upper oil cylinder is coaxially provided with an iron ring, and the iron ring is fixedly connected with the upper oil cylinder by a plurality of connecting rods.

Images