Gear device with multiple shafts rotating synchronously

Abstract

The utility model provides a multi-shaft synchronous rotation gear device. The multi-shaft synchronous rotation gear device comprises a driving shaft and two driven shafts. The two different transmission assemblies are meshed with the driving shaft at the same time and are meshed with the two driven shafts correspondingly, and the two driven shafts are driven to rotate in different rotating directions correspondingly. And then the multiple screws are connected with the two different driven shafts, the effect that the driving shaft is rotated to drive the multiple screws with the opposite rotating directions to rotate at the same time can be achieved, and the pressure at the mounting point positions of the multiple screws with the opposite rotating directions can be conveniently controlled to be consistent.

Description

Technical Field

[0001] The present invention generally relates to the technical field of gear boxes, and in particular to a multi-axis synchronously rotating gear device. Background Art

[0002] The diamond anvil press (DAC) experimental technology has become an important auxiliary means of modern cutting-edge extreme environment scientific research. The pressure generated between the anvils can reach hundreds of GPa (pressure unit). It is currently the only device that can generate a static pressure of one million atmospheres and is the most important scientific instrument in the field of high-pressure science and technology research.

[0003] In addition to encapsulating solids or liquids, DACs usually also need to encapsulate high-pressure gases and then pressurize them. In the prior art, the pressurization method is: there are multiple installation points on the shell, and the threaded holes opened at different installation points have different rotation directions; by adjusting the angle of the screw in the threaded hole, the connection depth of the screw is adjusted, and finally the pressure is adjusted.

[0004] During use, especially in high-pressure experiments on gas samples or gas-solid mixed samples with relatively high pressure, multiple screws with opposite rotation directions cannot be turned simultaneously by manually operating the screws to increase pressure, making it difficult to make the pressures at the installation points of multiple screws with opposite rotation directions consistent. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a multi-axis synchronously rotating gear device.

[0006] The present invention provides a multi-axis synchronously rotating gear device, comprising:

[0007] A shell, wherein a first through hole, a second through hole and a third through hole are formed in the shell;

[0008] A driving shaft, the driving shaft is rotatably mounted in the housing, and one end of the driving shaft is disposed in the first through hole; a first gear is coaxially fixedly mounted on the driving shaft;

[0009] A first driven shaft and a second driven shaft, wherein the first driven shaft and the second driven shaft are both rotatably mounted in the housing; a second gear is coaxially fixedly mounted on the first driven shaft; a third gear is coaxially fixedly mounted on the second driven shaft; one end of the first driven shaft passes through the second through hole and extends out of the housing; one end of the second driven shaft passes through the third through hole and extends out of the housing;

[0010] a first transmission assembly and a second transmission assembly, wherein the first transmission assembly and the second transmission assembly are both mounted on the housing; the first transmission assembly is respectively connected to the first gear and the second gear; the second transmission assembly is respectively connected to the first gear and the third gear;

[0011] When the driving shaft rotates under the action of external force, the first gear drives the second gear and the first driven shaft to rotate in the same direction as the driving shaft through the first transmission assembly; the first gear also drives the third gear and the second driven shaft to rotate in the opposite direction to the driving shaft through the second transmission assembly.

[0012] According to the technical solution provided by the present invention, the first transmission assembly includes:

[0013] a first transmission shaft, the first transmission shaft being rotatably mounted on the housing;

[0014] A first transmission gear and a second transmission gear, wherein the first transmission gear and the second transmission gear are coaxially fixedly mounted on the first transmission shaft;

[0015] The first transmission gear is meshed with the first gear; and the second transmission gear is meshed with the second gear.

[0016] According to the technical solution provided by the present invention, the second transmission assembly includes:

[0017] A second transmission shaft and a third transmission shaft, wherein the second transmission shaft and the third transmission shaft can be rotatably mounted on the housing;

[0018] A third transmission gear is coaxially fixedly mounted on the second transmission shaft; the third transmission gear is meshed with the first gear;

[0019] A fourth transmission gear and a fifth transmission gear are coaxially fixedly mounted on the third transmission shaft; the fourth transmission gear is meshed with the third transmission gear; and the fifth transmission gear is meshed with the third gear.

[0020] According to the technical solution provided by the present invention, the first transmission assembly is also used to make the angular velocity of the first driven shaft equal to the angular velocity of the driving shaft when the driving shaft rotates.

[0021] According to the technical solution provided by the present invention, the second transmission assembly is also used to make the angular velocity of the second driven shaft equal to the angular velocity of the driving shaft when the driving shaft rotates.

[0022] According to the technical solution provided by the present invention, the first transmission assembly and the second transmission assembly are also used to cooperate with each other so that the angular velocity of the second driven shaft is equal to the angular velocity of the first driven shaft.

[0023] According to the technical solution provided by the present invention, a first connecting member is coaxially and detachably mounted on the first driven shaft; a second connecting member is coaxially and detachably mounted on the second driven shaft;

[0024] The first connecting member and the second connecting member are used to respectively connect a plurality of bolts with different rotation directions, and when the driving shaft rotates, the plurality of bolts with different rotation directions are driven to rotate in opposite directions.

[0025] According to the technical solution provided by the present invention, a dial is provided on the outer surface of the housing; the dial is annular and is coaxially arranged with the driving shaft.

[0026] The beneficial effects of the present invention are:

[0027] A multi-axis synchronously rotating gear device is designed, including a driving shaft and two driven shafts. Two different transmission components are meshed with the driving shaft at the same time, and the two different transmission components are meshed with the two driven shafts respectively, driving the two driven shafts to rotate in different directions. Then, multiple screws are connected to the two different driven shafts, so that the rotating driving shaft can drive multiple screws with opposite rotation directions to rotate at the same time, which is convenient for controlling the pressure at the installation points of multiple screws with opposite rotation directions to be consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 It is a structural schematic diagram of a multi-axis synchronously rotating gear device;

[0030] Figure 2 It is another structural schematic diagram of a multi-axis synchronously rotating gear device;

[0031] Figure 3 It is a schematic diagram of the internal structure of a multi-axis synchronously rotating gear device;

[0032] Figure 4 is a structural schematic diagram of a first transmission assembly;

[0033] Figure 5 is a structural schematic diagram of a second transmission assembly;

[0034] Figure 6 is another structural schematic diagram of the second transmission assembly;

[0035] Wherein: 1. housing; 2. first through hole; 3. driving shaft; 4. first gear; 5. first driven shaft; 6. second driven shaft; 7. second gear; 8. third gear; 9. first transmission shaft; 10. first transmission gear; 11. second transmission gear; 12. second transmission shaft; 13. third transmission shaft; 14. third transmission gear; 15. fourth transmission gear; 16. fifth transmission gear; 17. first connecting member; 18. second connecting member; 19. dial; 20. second through hole; 21. third through hole; 22. diamond anvil press. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] Please refer to Figure 1-3 The present invention provides a multi-axis synchronously rotating gear device, comprising:

[0039] A housing 1, wherein the housing 1 is provided with a first through hole 2, a second through hole 20 and a third through hole 21;

[0040] A driving shaft 3, the driving shaft 3 is rotatably mounted in the housing 1, and one end of the driving shaft 3 is disposed in the first through hole 2; a first gear 4 is coaxially fixedly mounted on the driving shaft 3;

[0041] A first driven shaft 5 and a second driven shaft 6, both of which are rotatably mounted in the housing 1; a second gear 7 is coaxially fixedly mounted on the first driven shaft 5; a third gear 8 is coaxially fixedly mounted on the second driven shaft 6; one end of the first driven shaft 5 passes through the second through hole 20 and extends out of the housing 1; one end of the second driven shaft 6 passes through the third through hole 21 and extends out of the housing 1;

[0042] A first transmission assembly and a second transmission assembly, both of which are mounted on the housing 1; the first transmission assembly is respectively connected to the first gear 4 and the second gear 7; the second transmission assembly is respectively connected to the first gear 4 and the third gear 8;

[0043] When the driving shaft 3 rotates under the action of external force, the first gear 4 drives the second gear 7 and the first driven shaft 5 to rotate in the same direction as the driving shaft 3 through the first transmission assembly; the first gear 4 also drives the third gear 8 and the second driven shaft 6 to rotate in the opposite direction to the driving shaft 3 through the second transmission assembly.

[0044] Specifically, bearings are installed on the driving shaft 3 , the first driven shaft 5 and the second driven shaft 6 , which are fixed to the inner rings of the bearings connected to them respectively, and the outer rings of the bearings are fixedly connected to the inner wall of the housing 1 .

[0045] The end of the driving shaft 3 disposed in the first through hole 2 has a hexagonal groove. When in use, the structure with a hexagonal prism protrusion is inserted into the hexagonal groove so that the side walls of the two abut against each other, thereby driving the driving shaft 3 to rotate.

[0046] When the driving shaft 3 rotates clockwise, the first driven shaft 5 also rotates clockwise under the transmission action of the first transmission assembly; the second driven shaft 6 rotates counterclockwise under the action of the second transmission assembly.

[0047] Specifically, two threaded holes with different rotation directions are provided on the housing of the diamond anvil press 22. When connecting, two screws with different rotation directions are used and placed in the corresponding threaded holes respectively.

[0048] Then, the first driven shaft 5 and the second driven shaft 6 are respectively connected to screws with different rotation directions. When the driving shaft 3 rotates forward, the two screws can simultaneously fasten the housing of the diamond anvil press 22; when the driving shaft 3 rotates reversely, the two screws can simultaneously loosen the housing of the diamond anvil press 22.

[0049] In this way, the rotating driving shaft 3 can drive a plurality of screws with opposite rotation directions to rotate at the same time, so as to facilitate controlling the pressure at the installation points of the plurality of screws with opposite rotation directions to be consistent.

[0050] Further, refer to Figure 4 , the first transmission assembly comprises:

[0051] A first transmission shaft 9, wherein the first transmission shaft 9 is rotatably mounted on the housing 1;

[0052] A first transmission gear 10 and a second transmission gear 11, wherein the first transmission gear 10 and the second transmission gear 11 are coaxially fixedly mounted on the first transmission shaft 9;

[0053] The first transmission gear 10 meshes with the first gear 4 ; the second transmission gear 11 meshes with the second gear 7 .

[0054] Specifically, the first transmission shaft 9 is rotatably mounted in the housing 1 via a bearing.

[0055] When the driving shaft 3 rotates forward, the first transmission shaft 9 rotates reversely under the action of gear meshing, and then drives the first driven shaft 5 to rotate forward through the gear meshing, so that the first driven shaft 5 and the driving shaft 3 have the same rotation direction.

[0056] Furthermore, the first transmission assembly is also used to make the angular velocity of the first driven shaft 5 equal to the angular velocity of the driving shaft 3 when the driving shaft 3 rotates.

[0057] In some embodiments, when the ratio of the radius of the first gear 4 to the radius of the first transmission gear 10 is equal to the ratio of the radius of the second gear 7 to the radius of the second transmission gear 11, the angular velocity of the first driven shaft 5 can be equal to the angular velocity of the driving shaft 3.

[0058] Specifically, the radius R1 of the first gear 4 , the radius r1 of the first transmission gear 10 , the radius R2 of the second gear 7 and the radius r2 of the second transmission gear 11 satisfy the following relationship, so that the angular velocity of the first driven shaft 5 is equal to the angular velocity of the driving shaft 3 .

[0059]

[0060] At this radius ratio, the angular velocity of the driving shaft 3 is equal to the angular velocity of the first driven shaft 5, which means that the rotation angles of the two are also equal. Therefore, the rotation angle of the first driven shaft 5 can be controlled by controlling the rotation angle of the driving shaft 3, which is equivalent to controlling the rotation angle of the screw. In this way, the rotation angles of the first driven shaft 5 and the screw can be simply and directly controlled, making the pressure adjustment more controllable.

[0061] Further, refer to Figure 5-6 , the second transmission assembly comprises:

[0062] A second transmission shaft 12 and a third transmission shaft 13, wherein both the second transmission shaft 12 and the third transmission shaft 13 are rotatably mounted on the housing 1;

[0063] A third transmission gear 14 is coaxially fixedly mounted on the second transmission shaft 12; the third transmission gear 14 is meshed with the first gear 4;

[0064] A fourth transmission gear 15 and a fifth transmission gear 16 are coaxially fixedly mounted on the third transmission shaft 13 ; the fourth transmission gear 15 is meshed with the third transmission gear 14 ; and the fifth transmission gear 16 is meshed with the third gear 8 .

[0065] Specifically, the second transmission shaft 12 and the third transmission shaft 13 are both rotatably mounted in the housing 1 via bearings.

[0066] When the driving shaft 3 rotates forward, the second transmission shaft 12 reverses under the action of gear meshing, and the third transmission shaft 13 meshes with the second transmission shaft 12 to achieve forward rotation, and then drives the second driven shaft 6 to reverse through gear meshing, so that the second driven shaft 6 and the driving shaft 3 rotate in opposite directions.

[0067] Furthermore, the second transmission assembly is also used to make the angular velocity of the second driven shaft equal to the angular velocity of the driving shaft when the driving shaft rotates.

[0068] In some embodiments, when the ratio of the radius of the first gear 4 to the radius of the fourth transmission gear 15 is equal to the ratio of the radius of the third gear 8 to the radius of the fifth transmission gear 16, the angular velocity of the second driven shaft 6 can be equal to the angular velocity of the driving shaft 3.

[0069] Specifically, the radius R1 of the first gear 4 , the radius r4 of the fourth transmission gear 15 , the radius R3 of the third gear 8 and the radius r5 of the fifth transmission gear 16 satisfy the following relationship, so that the angular velocity of the second driven shaft 6 is equal to the angular velocity of the driving shaft 3 .

[0070]

[0071] Under this radius ratio, the angular velocity of the driving shaft 3 is equal to the angular velocity of the second driven shaft 6, and the rotation angles of the two are also equal. Therefore, the rotation angle of the second driven shaft 6 can be controlled by controlling the rotation angle of the driving shaft 3, which is equivalent to controlling the rotation angle of the screw. In this way, the rotation angle of the second driven shaft 6 and the screw can be simply and directly controlled, making the pressure adjustment more controllable.

[0072] Furthermore, the first transmission assembly and the second transmission assembly are used to cooperate with each other so that the angular velocity of the second driven shaft is equal to the angular velocity of the first driven shaft.

[0073] In some embodiments, the ratio of the radius of the second gear 7 to the radius of the third gear 8 is equal to the ratio of the first set value to the second set value;

[0074] The first set value is equal to the product of the radius of the second transmission gear 11 and the radius of the fourth transmission gear 15; the second set value is equal to the product of the radius of the first transmission gear 10 and the radius of the fifth transmission gear 16;

[0075] When the above conditions are met, the angular velocity of the second driven shaft 6 can be equal to the angular velocity of the first driven shaft 5 .

[0076] Specifically, different from the first two embodiments, in other embodiments, it is only necessary that the radius R2 of the second gear 7, the radius R3 of the third gear 8, the radius r2 of the second transmission gear 11, the radius r4 of the fourth transmission gear 15, the radius r1 of the first transmission gear 10 and the radius r5 of the fifth transmission gear 16 satisfy the following relationship:

[0077]

[0078] Under this radius ratio, the angular velocities of the two transmission shafts always remain consistent and do not need to be consistent with the angular velocity of the driving shaft 3 .

[0079] This makes the design of the first gear 4 on the transmission shaft 3 more diverse. For example, the radius of the first gear 4 is made larger. In this case, during the rotation process, the angular velocity of the driving shaft 3 is slower, and the angular velocity of the two transmission shafts is faster, which can achieve faster fastening connection.

[0080] For example, the radius of the first gear 4 is made smaller. In this case, during the rotation process, the angular velocity of the driving shaft 3 is faster, and the angular velocity of the two transmission shafts is slower. In this case, the rotation angle of the driven shaft can be adjusted more finely by rotating the driving shaft 3 more slowly, and the pressure applied by the screw can be controlled more accurately.

[0081] Furthermore, a first connecting member 17 is coaxially and detachably mounted on the first driven shaft 5; a second connecting member 18 is coaxially and detachably mounted on the second driven shaft 6;

[0082] The first connecting member 17 and the second connecting member 18 are used to respectively connect multiple bolts with different rotation directions. When the driving shaft 3 rotates, the multiple bolts with different rotation directions are driven to rotate in opposite directions.

[0083] Specifically, the first connecting member 17 and the second connecting member 18 are both hexagonal deformed prism structures.

[0084] The ends of the multiple screws installed on the outer shell of the diamond anvil press 22 also have hexagonal grooves correspondingly, which are used to connect with the first connecting member 17 and the second connecting member 18 respectively; the outer wall of the hexagonal prism abuts against the inner wall of the hexagonal groove to realize transmission.

[0085] Furthermore, a dial 19 is provided on the outer surface of the housing 1 ; the dial 19 is annular and is coaxially arranged with the driving shaft 3 .

[0086] Specifically, the relationship between the angular velocity of the driving shaft 3 and the angular velocity of the driven shaft in the above embodiment is related to the ratio of the radii of each gear.

[0087] A pointer can be fixedly set on the structure connected to the driving shaft 3, and then when the driving shaft 3 is rotated, the pointer can be observed to change the scale on the dial 19, and the rotation angle of the driving shaft 3 can be calculated. Then, according to the proportional relationship between the radii, the angular velocity ratio between the driving shaft 3 and the driven shaft can be converted to finally obtain the rotation angle of the screw. Based on the above factors, the rotation angles between the driving shaft, the driven shaft and the screw have a definite mathematical relationship, and finally the pressure adjustment can be more controllable.

[0088] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. A multi-axis synchronously rotating gear device, characterized in that: include: A shell (1), wherein the shell (1) is provided with a first through hole (2), a second through hole (20) and a third through hole (21); A driving shaft (3), the driving shaft (3) being rotatably mounted in the housing (1), and one end of which is arranged in the first through hole (2); a first gear (4) being coaxially fixedly mounted on the driving shaft (3); A first driven shaft (5) and a second driven shaft (6), wherein the first driven shaft (5) and the second driven shaft (6) are both rotatably mounted in the housing (1); a second gear (7) is coaxially fixedly mounted on the first driven shaft (5); a third gear (8) is coaxially fixedly mounted on the second driven shaft (6); one end of the first driven shaft (5) passes through the second through hole (20) and protrudes out of the housing (1); one end of the second driven shaft (6) passes through the third through hole (21) and protrudes out of the housing (1); A first transmission assembly and a second transmission assembly, wherein the first transmission assembly and the second transmission assembly are both mounted on the housing (1); the first transmission assembly is respectively connected to the first gear (4) and the second gear (7); and the second transmission assembly is respectively connected to the first gear (4) and the third gear (8); When the driving shaft (3) is rotated by an external force, the first gear (4) drives the second gear (7) and the first driven shaft (5) to rotate in the same direction as the driving shaft (3) through the first transmission assembly; the first gear (4) also drives the third gear (8) and the second driven shaft (6) to rotate in the opposite direction to the driving shaft (3) through the second transmission assembly.

2. A multi-axis synchronously rotating gear device according to claim 1, characterized in that: The first transmission assembly comprises: A first transmission shaft (9), the first transmission shaft (9) being rotatably mounted on the housing (1); A first transmission gear (10) and a second transmission gear (11), wherein the first transmission gear (10) and the second transmission gear (11) are coaxially fixedly mounted on the first transmission shaft (9); The first transmission gear (10) is meshed with the first gear (4); and the second transmission gear (11) is meshed with the second gear (7).

3. A multi-axis synchronously rotating gear device according to claim 2, characterized in that: The second transmission assembly comprises: A second transmission shaft (12) and a third transmission shaft (13), wherein the second transmission shaft (12) and the third transmission shaft (13) are both rotatably mounted on the housing (1); A third transmission gear (14) is coaxially fixedly mounted on the second transmission shaft (12); the third transmission gear (14) is meshed with the first gear (4); A fourth transmission gear (15) and a fifth transmission gear (16) are coaxially fixedly mounted on the third transmission shaft (13); the fourth transmission gear (15) is meshed with the third transmission gear (14); and the fifth transmission gear (16) is meshed with the third gear (8).

4. A multi-axis synchronously rotating gear device according to claim 1, characterized in that: The first transmission assembly is also used to make the angular velocity of the first driven shaft (5) equal to the angular velocity of the driving shaft (3) when the driving shaft (3) rotates.

5. A multi-axis synchronously rotating gear device according to claim 1, characterized in that: The second transmission assembly is also used to make the angular velocity of the second driven shaft (6) equal to the angular velocity of the driving shaft (3) when the driving shaft (3) rotates.

6. A multi-axis synchronously rotating gear device according to claim 1, characterized in that: The first transmission assembly and the second transmission assembly are also used to cooperate with each other so that the angular velocity of the second driven shaft (6) is equal to the angular velocity of the first driven shaft (5).

7. A multi-axis synchronously rotating gear device according to claim 1, characterized in that: A first connecting member (17) is coaxially and detachably mounted on the first driven shaft (5); and a second connecting member (18) is coaxially and detachably mounted on the second driven shaft (6); The first connecting member (17) and the second connecting member (18) are used to respectively connect a plurality of bolts with different rotation directions, and when the driving shaft (3) rotates, the plurality of bolts with different rotation directions are driven to rotate in opposite directions.

8. The multi-axis synchronously rotating gear device according to claim 1, characterized in that: The outer surface of the housing (1) is provided with a dial (19); the dial (19) is annular and is coaxially arranged with the driving shaft (3).

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