Single-shaft rotating press device

Abstract

The utility model provides a single-shaft rotating press device which comprises a supporting seat internally provided with a first space, an upper anvil is arranged in the first space and fixedly connected with the top of the supporting seat, a lifting assembly is fixed to the bottom of the supporting seat, and the lifting end of the lifting assembly is connected with a driving assembly. The driving assembly is arranged on the supporting seat and can be driven by the lifting assembly to move in the vertical direction, a lower anvil is arranged at the driving end of the driving assembly, the lower anvil and the upper anvil are oppositely arranged, and a gap for placing a sample is formed between the lower anvil and the upper anvil; during use, the lifting assembly is started, the lifting assembly drives the driving assembly to move towards the top of the supporting seat and drives the lower anvil to apply axial pressure to a sample, and the driving assembly drives the lower anvil to rotate around the axis of the lower anvil and applies radial shearing force to the sample. The pressing machine device can have the vertical and rotary combined pressurization function, and the experiment requirement that a sample is stressed in the axial direction and the radial direction at the same time can be met.

Description

Technical Field

[0001] The present application relates to the technical field of in-situ measurement devices for physical quantities under high temperature and high pressure, and in particular to a uniaxial rotary press device. Background Art

[0002] High-pressure experimental technology has become an important auxiliary means for modern frontier extreme environment scientific research. The pressure generated between the anvils can reach up to several hundred GPa. It is currently the only scientific device that can produce a static pressure of one million atmospheres and is the most important scientific instrument in the field of high-pressure science and technology research. In high-pressure physics experiments, the influence of axial high pressure on the sample is usually studied by loading the sample between the upper and lower anvils with axial high pressure, while the influence of radial shear force on the sample is ignored. The current high-pressure equipment is often continuously updated in axial loading, while radial shear force is rarely studied. Utility Model Content

[0003] The purpose of this application is to provide a uniaxial rotary press device in order to solve the above problems, including:

[0004] A support seat, wherein a first space is formed inside the support seat, an upper anvil is arranged in the first space, and the upper anvil is fixedly connected to the top of the support seat;

[0005] A driving assembly, the driving assembly is arranged on the supporting seat and can slide on the supporting seat in a vertical direction; a lower anvil is arranged on the driving end of the driving assembly, the lower anvil and the upper anvil are arranged opposite to each other, and there is a gap between the two for placing the sample, and the driving assembly is used to drive the lower anvil to rotate around its axis to apply radial shear force to the sample;

[0006] A lifting component is fixedly connected to the bottom of the support seat, and the lifting component can cause the driving component to move in a vertical direction to change the size of the gap, thereby changing the axial pressure on the sample.

[0007] According to the technical solution provided in some embodiments of the present application, a light-through hole extending in a vertical direction is provided on the top of the support seat, and the light-through hole is arranged facing the sample.

[0008] According to the technical solution provided in certain embodiments of the present application, the support base includes a press top plate and a press bottom plate distributed in the vertical direction, four support columns are fixedly connected between the press top plate and the press bottom plate, and the press top plate, the press bottom plate and the four support columns together enclose the first space; the upper anvil is fixed on the press top plate, the light through hole is provided on the press top plate, and the lifting assembly is fixedly connected to the press bottom plate.

[0009] According to the technical solution provided in certain embodiments of the present application, the support seat also includes an intermediate frame, which is sleeved outside the four support columns and is slidably connected to the four support columns along the vertical direction, and the driving assembly is arranged on the intermediate frame.

[0010] According to the technical solution provided in certain embodiments of the present application, the driving assembly includes a driving motor, which is fixed on the outside of the intermediate frame and the driving shaft extends in the vertical direction. A transmission mechanism is provided on the intermediate frame, and the input end of the transmission mechanism is connected to the driving shaft, and the output end is connected to the lower anvil. The output end of the transmission mechanism is the driving end, and the driving motor drives the lower anvil to rotate through the transmission mechanism.

[0011] According to the technical solution provided in certain embodiments of the present application, the transmission mechanism includes a transmission gear and a reducer, the transmission gear is sleeved on the drive shaft, the reducer includes an input gear and an output gear that mesh with each other, the input gear passes through the intermediate frame and meshes with the transmission gear, the output gear is located in the intermediate frame, an output gear shaft is provided in the middle of the intermediate frame, and the top end of the output gear shaft is the driving end.

[0012] According to the technical solution provided in certain embodiments of the present application, the lifting assembly includes a high-pressure oil pump, which is arranged on one side outside the support seat. The high-pressure oil pump is connected to an axial pressure cylinder through an oil pipe, and the axial pressure cylinder is arranged under the reducer and fixed on the bottom plate of the press.

[0013] According to the technical solution provided in certain embodiments of the present application, a thrust ball bearing is provided between the reducer and the axial pressure cylinder, the shaft ring of the thrust ball bearing is fixedly connected to the bottom end of the output gear shaft, and the seat ring of the thrust ball bearing is fixedly connected to the axial pressure cylinder.

[0014] According to the technical solution provided in certain embodiments of the present application, a first support block is provided between the driving end and the lower anvil, and a second support block is provided between the thrust ball bearing and the axial pressure cylinder, and the first support block and the second support block are used to apply uniform axial pressure to the lower anvil.

[0015] Compared with the prior art, the present application has the following beneficial effects: the present application provides a uniaxial rotary press device, which comprises a support seat having a first space inside, an upper anvil being arranged in the first space, the upper anvil being fixedly connected to the top of the support seat, a lifting assembly being fixedly arranged at the bottom of the support seat, the lifting end of the lifting assembly being connected to a driving assembly, the driving assembly being arranged on the support seat and being displaceable in a vertical direction under the drive of the lifting assembly, a lower anvil being arranged at its driving end, the lower anvil and the upper anvil being arranged opposite to each other, and a gap being provided between the two for placing a sample; the present application provides a lifting assembly and a driving assembly that can drive the lower anvil to rotate, The component drives the lower anvil through the driving component to change the gap size and apply axial pressure to the sample. The driving component drives the lower anvil to rotate to apply radial shear force to the sample, so that the pressing device can have the function of vertical and rotational composite pressurization, and can meet the experimental requirements of simultaneous axial and radial force on the sample. Different from the traditional high-pressure physics experiment that directly uses the diamond anvil press, the upper anvil and the lower anvil are directly arranged on the support seat, and the gap size for placing the sample is adjusted through the lifting component, so that the pressing device provided in the present application can load samples of larger capacity, which can make the experimental effect more significant.

[0016] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a uniaxial rotary press device provided in an embodiment of the present application;

[0019] Figure 2A cross-sectional schematic diagram of a uniaxial rotary press device provided in an embodiment of the present application.

[0020] The text annotations in the figure represent:

[0021] 1. Support seat; 2. Upper anvil; 3. Lower anvil; 4. Driving motor; 5. Reducer; 6. Axial pressure cylinder; 7. Thrust ball bearing; 8. First support block; 9. Second support block; 10. Press top plate; 11. Press bottom plate; 12. Support column; 13. Intermediate frame. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] As mentioned in the background technology, in view of the problems existing in the prior art, this embodiment provides a uniaxial rotary press device, comprising:

[0025] A support seat 1, wherein a first space is formed inside the support seat 1, an upper anvil 2 is arranged in the first space, and the upper anvil 2 is fixedly connected to the top of the support seat 1;

[0026] A driving assembly is disposed on the support seat 1 and can slide on the support seat 1 in a vertical direction; a lower anvil 3 is disposed on the driving end of the driving assembly, the lower anvil 3 and the upper anvil 2 are disposed opposite to each other, and there is a gap between the two for placing the sample, and the driving assembly is used to drive the lower anvil 3 to rotate around its axis to apply a radial shear force to the sample;

[0027] The lifting component is fixedly connected to the bottom of the support seat 1, and the lifting component can make the driving component move in the vertical direction to change the size of the gap.

[0028] like Figure 1 and Figure 2 As shown, the support seat 1 has a top plate and a bottom plate and forms a first space inside, the upper anvil 2 is fixed on the top plate and arranged toward the bottom plate, the lifting assembly is fixedly connected to the bottom plate, and its lifting end is connected to a driving assembly, the driving assembly is slidably connected to the support seat 1 and its driving end is connected to the lower anvil 3, the lower anvil 3 is arranged toward the top plate, the upper anvil 2 and the lower anvil 3 are common diamond anvils in the prior art, and the two are coaxially arranged, the lifting assembly can displace the lower anvil 3 in the vertical direction to change the gap size between the upper anvil 2 and the lower anvil 3, thereby changing the pressure on the sample, and the driving assembly can drive the lower anvil 3 to rotate around the anvil axis, thereby changing the shear force on the sample.

[0029] When in use, start the lifting assembly to adjust the gap size, place the sample at the gap, and start the lifting assembly again. The lifting assembly drives the driving assembly to move to the top of the support seat 1, driving the lower anvil 3 to move upward to reduce the gap and at the same time apply axial pressure to the sample. When the pressure reaches the experimental requirements, the lifting assembly is controlled to stop running and the driving assembly is started. The driving assembly drives the lower anvil 3 to rotate around its axis to apply radial shear force to the sample. When the experiment is completed, start the lifting assembly to increase the gap, take out the sample, and obtain the experimental results by detecting the current state of the sample.

[0030] The uniaxial rotary press device is provided with a lifting component and a driving component that can drive the lower anvil to rotate. The lifting component drives the lower anvil 3 to move in the vertical direction through the driving component, which can change the gap size and apply axial pressure to the sample. The driving component drives the lower anvil 3 to rotate to apply radial shear force to the sample, meeting the experimental requirements of the sample being subjected to axial and radial forces at the same time. At the same time, unlike the traditional high-pressure physics experiment that directly uses the diamond anvil press, the upper anvil 2 and the lower anvil 3 are directly arranged on the support seat 1, and the gap size for placing the sample is adjusted by the lifting component, so that the press device provided in the present application can load samples of larger capacity, which can make the experimental effect more significant.

[0031] In a preferred embodiment, a light-through hole extending in a vertical direction is provided on the top of the support base 1, and the light-through hole is arranged facing the sample.

[0032] like Figure 2 As shown, the light hole is arranged opposite to the upper anvil 2. The diamond material of the upper anvil 2 is light-transmissive. During the experiment, the detection light beam can be irradiated onto the sample through the light path formed by the light hole, and the state of the sample during the experiment is detected according to the reflection of the light beam.

[0033] In a preferred embodiment, the support base 1 includes a press top plate 10 and a press bottom plate 11 distributed in a vertical direction, four support columns 12 are fixedly connected between the press top plate 10 and the press bottom plate 11, and the press top plate 10, the press bottom plate 11 and the four support columns 12 together form a first space; the upper anvil 2 is fixed on the press top plate 10, the light through hole is provided on the press top plate 10, and the lifting assembly is fixedly connected to the press bottom plate 11.

[0034] like Figure 2 As shown, the press top plate 10 and the press bottom plate 11 are connected by four support columns 12, and are limited and fixed to the support columns 12 by nuts. The upper anvil 2 is fixed to the press top plate 10 by an anvil pad, and a light-through hole is also provided on the anvil pad at a position corresponding to the press top plate 10. By using limiting nuts to respectively connect the support columns 12 to the press top plate 10 and the press bottom plate 11, the subsequent disassembly of the press device can be facilitated. At the same time, the arrangement of the support columns 12 facilitates observation during the experiment.

[0035] In a preferred embodiment, the support base 1 further includes an intermediate frame 13 , which is sleeved outside the four support columns 12 and slidably connected to the four support columns 12 along a vertical direction, and the driving assembly is disposed on the intermediate frame 13 .

[0036] like Figure 1 As shown, the middle frame 13 is a hollow rectangular structure with through holes on both the upper and lower surfaces. Four support columns 12 penetrate the corners of the middle frame 13 in the vertical direction and are slidably connected to the middle frame 13. The middle frame 13 is arranged between the press top plate 10 and the press bottom plate 11, and is used to install a driving assembly so that the driving assembly can slide in the vertical direction when driven by the lifting assembly, thereby driving the lower anvil 3 to move accordingly and thereby changing the size of the gap.

[0037] In a preferred embodiment, the driving assembly includes a driving motor 4, which is fixed on the outside of the intermediate frame 13 and the driving shaft extends in the vertical direction. A transmission mechanism is provided on the intermediate frame 13, the input end of the transmission mechanism is connected to the driving shaft, and the output end is connected to the lower anvil 3. The output end of the transmission mechanism is the driving end, and the driving motor 4 drives the lower anvil 3 to rotate through the transmission mechanism.

[0038] like Figure 2As shown, the driving motor 4 is arranged on one side of the middle frame 13 and is fixed to the middle frame 13 through a cover shell. The cover shell includes two connected upper and lower parts, the upper part is a rectangular shell with a first open end on one side, and the lower part is a cylindrical shell with a second open end at the bottom; the upper part is fixedly connected to one side of the middle frame 13, and the lower part is fixedly connected to the outer shell of the driving motor 4. The driving shaft of the driving motor 4 passes through the second open end in the vertical direction and is transmission-connected to the input end of the transmission mechanism through the first open end. The transmission mechanism is arranged on the middle frame 13, and the power generated by the driving motor 4 can be transmitted to the lower anvil 3. By arranging the driving motor 4 to drive the lower anvil 3 to rotate through the transmission mechanism, a radial shear force can be applied to the sample.

[0039] In a preferred embodiment, the transmission mechanism includes a transmission gear and a reducer 5. The transmission gear is sleeved on the driving shaft. The reducer 5 includes an input gear and an output gear that mesh with each other. The input gear passes through the intermediate frame 13 and meshes with the transmission gear. The output gear is located in the intermediate frame 13, and an output gear shaft is provided in the middle thereof. The top end of the output gear shaft is the driving end.

[0040] like Figure 2 As shown, the reducer 5 uses a common primary cylindrical gear reducer in the prior art. The number of teeth of the input gear is smaller than that of the output gear. The input gear is located at one end of the intermediate frame 13 close to the transmission gear, and its two sides are respectively meshed with the output gear and the transmission gear. The drive motor drives the transmission gear to rotate around its axis, driving the input gear to rotate, and the input gear drives the output gear to rotate. The torque applied by the drive motor 4 is amplified by the reducer 5 and then transmitted to the lower anvil 3, which facilitates the experiment process to apply a larger torque to the sample and helps the experiment.

[0041] In a preferred embodiment, the lifting assembly includes a high-pressure oil pump, which is arranged on the outer side of the support seat 1. The high-pressure oil pump is connected to the axial pressure cylinder 6 through an oil pipe. The axial pressure cylinder 6 is arranged below the reducer 5 and fixed on the press bottom plate 11.

[0042] like Figure 2 As shown, the axial pressure cylinder 6 is a common hydraulic cylinder in the prior art. The piston rod of the axial pressure cylinder 6 is coaxially arranged with the output gear shaft of the reducer 5. The free end of the piston rod is the lifting end. The high-pressure oil pump pumps oil into the axial pressure cylinder 6 through the oil pipe, the piston rod extends, and the lifting end moves toward the top of the press device, and drives the lower anvil 3 through the output gear shaft to reduce the gap and apply axial pressure to the sample; when the high-pressure oil pump extracts the oil in the axial pressure cylinder 6, the piston rod contracts, and the lifting end moves toward the bottom of the press device, and drives the lower anvil 3 through the output gear shaft to increase the gap and reduce the axial pressure applied to the sample.

[0043] In a preferred embodiment, a thrust ball bearing 7 is provided between the reducer 5 and the axial pressure cylinder 6 , the shaft ring of the thrust ball bearing 7 is fixedly connected to the bottom end of the output gear shaft, and the seat ring of the thrust ball bearing 7 is fixedly connected to the axial pressure cylinder 6 .

[0044] like Figure 2 As shown, the shaft ring of the thrust ball bearing 7 is fixedly connected to the bottom end of the output gear shaft, and the seat ring of the thrust ball bearing 7 is fixedly connected to the top end of the piston rod. The thrust ball bearing 7 can effectively reduce the friction between the output gear shaft and the axial pressure cylinder 6 when it rotates under high axial pressure.

[0045] In a preferred embodiment, a first support block 8 is provided between the driving end and the lower anvil 3, and a second support block 9 is provided between the thrust ball bearing 7 and the axial pressure cylinder 6. The first support block 8 and the second support block 9 are used to subject the lower anvil 3 to uniform axial pressure.

[0046] like Figure 2 As shown, the first support block 8 and the second support block 9 are both cylindrical and are coaxially arranged with the anvil. The area of ​​the axial cross-section of the first support block 8 is equal to the cross-sectional area of ​​the bottom of the lower anvil 3, and is larger than the cross-sectional area of ​​the output gear shaft. The axial cross-sectional area of ​​the second support block 9 is equal to the cross-sectional area of ​​the thrust ball bearing 7, and is larger than the cross-sectional area of ​​the piston rod of the axial pressure cylinder 6. The first support block 8 and the second support block 9 can make the pressure generated by the axial pressure cylinder 6 be evenly transmitted to the lower anvil 3.

[0047] Working principle: place the sample between the upper anvil 2 and the lower anvil 3, start the press device, the axial pressure cylinder 6 pushes the reducer 5 to move toward the top of the press device, and transmits the pressure to the lower anvil 3 through the output gear shaft of the reducer 5. When the pressure reaches the preset value required for the experiment, start the drive motor 4 to drive the transmission gear to rotate around its axis, the transmission gear drives the input gear to rotate, and the input gear drives the output gear to rotate. The rotational torque of the drive motor 4 is amplified by the reducer 5 and transmitted to the lower anvil 3 by the output gear shaft, so that the lower anvil 3 starts to rotate, which can apply axial pressure and radial shear force to the sample to achieve the experimental requirement that the sample is subjected to axial and radial forces at the same time. At this time, the state of the sample at this time can be detected by injecting detection light into the light-through hole, and the experimental data of the sample being subjected to axial and radial forces at the same time can be obtained; the size of the gap for placing the sample is adjusted by the lifting assembly, so that the press device provided by the present application can load samples of larger capacity, which can make the experimental effect more significant.

[0048] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A uniaxial rotary press device, characterized in that: include: A support seat (1), wherein a first space is formed inside the support seat (1), an upper anvil (2) is arranged in the first space, and the upper anvil (2) is fixedly connected to the top of the support seat (1); A driving assembly, the driving assembly is arranged on the support seat (1) and can slide on the support seat (1) in a vertical direction; a lower anvil (3) is arranged on the driving end of the driving assembly, the lower anvil (3) and the upper anvil (2) are arranged opposite to each other, and there is a gap between the two for placing the sample, and the driving assembly is used to drive the lower anvil (3) to rotate around its axis to apply radial shear force to the sample; A lifting component is fixedly connected to the bottom of the support seat (1), and the lifting component can cause the driving component to move in a vertical direction to change the size of the gap.

2. A uniaxial rotary press device according to claim 1, characterized in that: The top of the support seat (1) is provided with a light-through hole extending in a vertical direction, and the light-through hole is arranged facing the sample.

3. A uniaxial rotary press device according to claim 2, characterized in that: The support seat (1) comprises a press top plate (10) and a press bottom plate (11) distributed in a vertical direction, four support columns (12) are fixedly connected between the press top plate (10) and the press bottom plate (11), and the press top plate (10), the press bottom plate (11) and the four support columns (12) together enclose the first space; the upper anvil (2) is fixed on the press top plate (10), the light hole is provided on the press top plate (10), and the lifting assembly is fixedly connected to the press bottom plate (11).

4. A uniaxial rotary press device according to claim 3, characterized in that: The support seat (1) further comprises an intermediate frame (13), wherein the intermediate frame (13) is sleeved outside the four support columns (12) and is slidably connected to the four support columns (12) along a vertical direction, and the driving assembly is arranged on the intermediate frame (13).

5. A uniaxial rotary press device according to claim 4, characterized in that: The driving assembly comprises a driving motor (4), wherein the driving motor (4) is fixed on the outside of the intermediate frame (13) and the driving shaft extends in the vertical direction. A transmission mechanism is provided on the intermediate frame (13), wherein the input end of the transmission mechanism is connected to the driving shaft, and the output end is connected to the lower anvil (3). The output end of the transmission mechanism is the driving end, and the driving motor (4) drives the lower anvil (3) to rotate via the transmission mechanism.

6. A uniaxial rotary press device according to claim 5, characterized in that: The transmission mechanism comprises a transmission gear and a reducer (5), wherein the transmission gear is sleeved on the drive shaft, and the reducer (5) comprises an input gear and an output gear meshing with each other, wherein the input gear passes through the intermediate frame (13) and meshes with the transmission gear, and the output gear is located in the intermediate frame (13), wherein an output gear shaft is provided in the middle, and the top end of the output gear shaft is the driving end.

7. A uniaxial rotary press device according to claim 6, characterized in that: The lifting assembly comprises a high-pressure oil pump, which is arranged on one side outside the support seat (1). The high-pressure oil pump is connected to an axial pressure oil cylinder (6) via an oil pipe. The axial pressure oil cylinder (6) is arranged below the reducer (5) and fixed on the press bottom plate (11).

8. A uniaxial rotary press device according to claim 7, characterized in that: A thrust ball bearing (7) is provided between the reducer (5) and the axial pressure cylinder (6); the shaft ring of the thrust ball bearing (7) is fixedly connected to the bottom end of the output gear shaft; and the seat ring of the thrust ball bearing (7) is fixedly connected to the axial pressure cylinder (6).

9. A uniaxial rotary press device according to claim 8, characterized in that: A first support block (8) is provided between the driving end and the lower anvil (3), and a second support block (9) is provided between the thrust ball bearing (7) and the axial pressure cylinder (6). The first support block (8) and the second support block (9) are used to apply uniform axial pressure to the lower anvil (3).

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