A microgravity compensation device

Abstract

This invention relates to a microgravity compensation device, comprising: a fixed base, a sliding base, a mounting base, an elastic element, a hook base, and a screw. The sliding base is slidably mounted on the fixed base; the mounting base is mounted on the sliding base; the fixed base has a first threaded hole; the screw is threadedly connected to the hook base and the first threaded hole respectively; the screw is rotatably connected to the mounting base; one end of the elastic element is detachably connected to the hook base, and the other end of the elastic element is detachably connected to the mounting base. This invention fixes the relative movement direction between components and simultaneously fixes the extension / retraction direction of the elastic element, preventing changes in the force direction of the elastic element and effectively improving the accuracy of the microgravity compensation mechanism. Furthermore, the magnitude of gravity compensation can be adjusted simply by adjusting the position of the screw in the first threaded hole, which is more convenient and faster than replacing the tension spring and permanent magnet in existing technologies.

Description

Technical Field

[0001] This invention relates to a microgravity compensation device. Background Technology

[0002] Currently, there are many mechanisms for compensating for vertical motion gravity, but very few for microgravity. Microgravity compensation mechanisms mainly include magnetic compensation and tension spring compensation.

[0003] Magnetic compensation requires permanent magnets, which are made of rare metals through sintering, making them relatively expensive. Once the permanent magnet is manufactured, the amount of gravity compensation is basically determined; changes in gravity may require the manufacture of a new permanent magnet. Most permanent magnets have a demagnetization temperature of around 120 degrees Celsius, so their operating environment cannot exceed this temperature, placing high demands on their performance.

[0004] Tension spring compensation mechanisms are widely used in existing microgravity compensation mechanisms. These elastic compensation mechanisms offer advantages such as low cost, applicability in complex environments, and a wide range of gravity compensation capabilities. Currently, tension spring compensation mechanisms primarily use tension-tension springs or compression-tension springs to balance gravity. They directly connect the fixed seat and the sliding seat via the tension spring to provide microgravity compensation to the sliding seat. However, this type of microgravity compensation mechanism has a complex structure, and the lack of limiting mechanisms between the sliding seat and the fixed seat can easily cause changes in the extension and contraction direction of the tension spring, failing to meet the accuracy requirements of high-precision systems. Furthermore, adjusting the compensation force requires replacing different tension springs. Summary of the Invention

[0005] The purpose of this invention is to provide a microgravity compensation device with higher precision and more convenient and faster adjustment of the compensation force.

[0006] To achieve the above objectives, the present invention provides a microgravity compensation device, comprising: a fixed base, a sliding base, a mounting base, an elastic element, a hook base, and a screw extending along a first straight line; the sliding base is slidably mounted on the fixed base along the first straight line; the mounting base is disposed on the sliding base; the fixed base has a first threaded hole; the screw is threadedly connected to the hook base and the first threaded hole respectively, wherein the thread of the first threaded hole and the thread of the hook base are the same thread; the screw is rotatably connected to the mounting base; one end of the elastic element is detachably connected to the hook base, and the other end of the elastic element is detachably connected to the mounting base.

[0007] Optionally, the hook seat extends along a second linear direction; the first linear direction is perpendicular to the second linear direction; the hook seat has a second threaded hole extending along the first linear direction; the second threaded hole is threadedly connected to the screw.

[0008] Optionally, the first threaded hole penetrates the mounting base; the end of the screw away from the mounting base has an insert groove for inserting a screwdriver.

[0009] Optionally, the inlay groove is a slotted groove or a cross-shaped groove.

[0010] Optionally, the elastic element is a tension spring; the hook seat has a first latch on the side facing away from the mounting base; the mounting base has a second latch; one end of the tension spring is detachably connected to the first latch, and the other end of the tension spring is detachably connected to the second latch.

[0011] Optionally, the first bayonet and the second bayonet are spaced apart in the first straight line direction.

[0012] Optionally, the number of tension springs is multiple, and the number of tension springs is even; the multiple tension springs are symmetrically distributed on opposite sides of the screw.

[0013] Optionally, it also includes: a first bolt and a second bolt; the mounting base has a third threaded hole and a fourth threaded hole; the sliding base has a fifth threaded hole and a sixth threaded hole; the first bolt passes through the third threaded hole and the fourth threaded hole; the second bolt passes through the fifth threaded hole and the sixth threaded hole.

[0014] Optionally, the first straight line direction is a vertical straight line direction; the second straight line direction is a horizontal straight line direction.

[0015] Optionally, it also includes: a buffer sleeve and a limiting post; the buffer sleeve is coaxially connected to the screw; the diameter of the buffer sleeve is larger than the diameter of the second threaded hole; a retaining hole is provided on the mounting base; one end of the limiting post is engaged in the retaining hole, and the other end of the limiting post is rotatably disposed in the buffer sleeve.

[0016] Compared with the prior art, the microgravity compensation device of this invention has the following advantages:

[0017] In this embodiment of the invention, the sliding seat in the microgravity compensation device moves along a first straight line on the fixed seat, and the screw moves along the same first straight line on the fixed seat. This fixes the relative motion direction between the components and the extension / retraction direction of the elastic element, preventing changes in the force direction on the elastic element and effectively improving the accuracy of the microgravity compensation mechanism. Furthermore, the magnitude of gravity compensation can be adjusted simply by adjusting the position of the screw in the first threaded hole. Compared to existing technologies that require replacing the tension spring and permanent magnet, this adjustment method is more convenient and faster. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the hook base in an embodiment of the present invention;

[0020] Figure 3 This is a top view of an embodiment of the present invention.

[0021] In the diagram, 1 is the fixed seat; 11 is the first threaded hole; 2 is the sliding seat; 3 is the mounting seat; 31 is the second bayonet; 32 is the locking hole; 4 is the elastic element; 5 is the hook seat; 51 is the second threaded hole; 52 is the first bayonet; 6 is the screw; 61 is the inlay groove; 7 is the first bolt; 8 is the second bolt; 9 is the buffer sleeve; and 10 is the limiting post. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0023] First, it should be noted that the directions such as top, bottom, upward, and downward mentioned in this article are defined relative to the directions in the various accompanying figures. They are relative concepts and therefore can change depending on their different positions and practical applications. Therefore, these or other directions should not be interpreted as restrictive terms.

[0024] It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude the plural.

[0025] Furthermore, it should be noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the accompanying drawings, can still be combined among these technical features (or their equivalents) to obtain other embodiments of this application not directly mentioned herein.

[0026] It should also be understood that while the terms "first," "second," etc., are used in this document to describe various types of information, this information should not be limited to these terms, which are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0027] It should be noted that in different figures, the same reference numerals denote the same or substantially the same components.

[0028] like Figure 1 and Figure 2As shown, a preferred embodiment of the microgravity compensation device of the present invention includes: a fixed base 1, a sliding base 2, a mounting base 3, an elastic element 4, a hook base 5, and a screw 6 extending along a first straight line. The sliding base 2 is slidably mounted on the fixed base 1 along the first straight line. The mounting base 3 is disposed on the sliding base 2. The fixed base 1 has a first threaded hole 11. The screw 6 is threadedly connected to the hook base 5 and the first threaded hole 11, respectively, and the thread of the first threaded hole 11 is the same as the thread of the hook base 5. The screw 6 is rotatably connected to the mounting base 3. One end of the elastic element 4 is detachably connected to the hook base 5, and the other end of the elastic element 4 is detachably connected to the mounting base 3.

[0029] Based on the above structure, the sliding direction of the sliding seat 2 in this application is consistent with the sliding direction of the screw 6. When it is necessary to increase the gravity compensation force on the sliding seat 2, since the thread of the first threaded hole 11 and the thread of the hook seat 5 are the same thread, when the screw 6 is rotated in the first threaded hole 11 relative to the fixed seat 1, the relative position of the hook seat 5 and the fixed seat 1 remains unchanged. The screw 6 moves away from the fixed seat 1 along the first straight line, thereby driving the mounting seat 3 to move away from the fixed seat 1 along the first straight line, increasing the distance between the hook seat 5 and the mounting seat 3, thereby lengthening the elastic element 4 between the hook seat 5 and the mounting seat 3, thereby increasing the compensation force of the elastic element 4 on the sliding seat 2. Furthermore, when it is necessary to reduce the gravity compensation force on the sliding seat 2, since the thread of the first threaded hole 11 and the thread of the hook seat 5 are the same, when the screw 6 is rotated in the first threaded hole 11 relative to the fixed seat 1, the relative position of the hook seat 5 and the fixed seat 1 remains unchanged. The screw 6 moves towards the fixed seat 1 along the first straight line, thereby driving the mounting seat 3 to move towards the fixed seat 1 along the first straight line, reducing the distance between the hook seat 5 and the mounting seat 3, thereby compressing the elastic element 4 between the hook seat 5 and the mounting seat 3, thus reducing the compensation force of the elastic element 4 on the sliding seat 2. Based on the above structure, in the microgravity compensation device of this application, the sliding seat 2 moves on the fixed seat 1 along the first straight line, and the screw 6 moves on the fixed seat 1 along the first straight line, fixing the relative movement direction between the components of this application, and fixing the extension and contraction direction of the elastic element 4, avoiding changes in the force direction of the elastic element 4, and effectively improving the accuracy of the microgravity compensation mechanism. In addition, the magnitude of gravity compensation can be adjusted simply by adjusting the position of the screw 6 in the first threaded hole 11. Compared with the prior art of replacing the tension spring and the permanent magnet, the adjustment method of this application is more convenient and faster.

[0030] Further, see Figure 1 and Figure 2The hook seat 5 extends along a second straight line direction. The first straight line direction is perpendicular to the second straight line direction. The hook seat 5 has a second threaded hole 51 extending along the first straight line direction. The second threaded hole 51 is threadedly connected to the screw 6. The threads of the second threaded hole 51 and the first threaded hole 11 are the same and in the same direction, thereby ensuring that the relative position of the fixed seat 1 and the hook seat 5 can be fixed during the rotation of the screw 6.

[0031] Further, see Figure 2 and Figure 3 The first threaded hole 11 passes through the fixing base 1. The end of the screw 6 away from the mounting base 3 has an insert groove 61 for inserting a screwdriver. The user can insert a screwdriver into the first threaded hole 11 from the end away from the hook base 5 to insert it into the insert groove 61, thereby adjusting the position of the screw 6 in the first threaded hole 11.

[0032] Furthermore, the inlay groove 61 is a slotted groove or a cross-shaped groove.

[0033] In one possible embodiment, the elastic element 4 is a tension spring. The hook seat 5 has a first latch 52 on its side facing away from the mounting base 3. The mounting base 3 has a second latch 31. One end of the tension spring is detachably connected to the first latch 52, and the other end of the tension spring is detachably connected to the second latch 31.

[0034] The tension spring in this application is always in a stretched state.

[0035] In this application, the two ends of the tension spring are connected to the first bayonet 52 and the second bayonet 31 by a snap-fit ​​method, so that the tension spring can be replaced by removing it when it expires.

[0036] Furthermore, the first straight line direction is a vertical straight line direction; the second straight line direction is a horizontal straight line direction.

[0037] Further, see Figure 1 and Figure 2 The first latch 52 and the second latch 31 are spaced apart in the first straight direction, so that the tension spring can extend and retract along the first straight direction. When the first straight direction is a vertical straight direction, the compensating force of the tension spring on the sliding seat 2 is opposite to the direction of the gravity of the sliding seat 2.

[0038] See Figure 1 and Figure 2In order to increase the compensation force on the sliding seat 2, there are multiple tension springs, and the number of tension springs is even. The multiple tension springs are symmetrically distributed on opposite sides of the screw 6. The even number of tension springs can balance the compensation force on opposite sides of the hook seat 5 located in the second threaded hole 51, so as to avoid the hook seat 5 tilting and causing the direction of the compensation force of the tension spring to change.

[0039] In one possible embodiment, see Figure 1 The embodiments of the present invention further include: a first bolt 7 and a second bolt 8. The mounting base 3 has a third threaded hole and a fourth threaded hole. The sliding base 2 has a fifth threaded hole and a sixth threaded hole. The first bolt 7 passes through the third threaded hole and the fourth threaded hole. The second bolt 8 passes through the fifth threaded hole and the sixth threaded hole. This application utilizes a method of determining a straight line from two points to fix the mounting base 3, thereby preventing the mounting base 3 from rotating.

[0040] Furthermore, the fixed seat 1 is provided with a guide rail extending along the first straight line direction, and the sliding seat 2 is provided with a slider, which slides on the guide rail.

[0041] In one possible embodiment, see Figure 1 and Figure 2 The embodiment of the present invention further includes: a buffer sleeve 9 and a limiting post 10. The buffer sleeve 9 is coaxially connected to the screw 6. A locking hole 32 is provided on the mounting base 3. One end of the limiting post 10 is locked in the locking hole 32, and the other end of the limiting post 10 is rotatably disposed in the buffer sleeve 9. The diameter of the buffer sleeve 9 is larger than the diameter of the second threaded hole 51, so that when the screw 6 moves vertically upward relative to the fixed base 1 to its extreme position, the buffer sleeve 9 abuts against the bottom of the hook base 5, thereby limiting the movement of the screw 6.

[0042] The working process of this invention is as follows: When it is necessary to increase the gravity compensation force on the sliding seat 2, when the screw 6 is rotated in the first threaded hole 11 relative to the fixed seat 1, the relative position of the hook seat 5 and the fixed seat 1 remains unchanged. The screw 6 moves vertically away from the fixed seat 1, thereby driving the mounting seat 3 to move vertically away from the fixed seat 1, increasing the distance between the hook seat 5 and the mounting seat 3, thus lengthening the tension spring between the hook seat 5 and the mounting seat 3, thereby increasing the gravity compensation force of the elastic element 4 on the sliding seat 2. Conversely, when it is necessary to reduce the gravity compensation force on the sliding seat 2, when the screw 6 is rotated in the first threaded hole 11 relative to the fixed seat 1, the relative position of the hook seat 5 and the fixed seat 1 remains unchanged. The screw 6 moves vertically toward the fixed seat 1, thereby driving the mounting seat 3 to move vertically toward the fixed seat 1, decreasing the distance between the hook seat 5 and the mounting seat 3, thereby compressing the tension spring between the hook seat 5 and the mounting seat 3, thereby reducing the compensation force of the elastic element 4 on the sliding seat 2.

[0043] In summary, this invention provides a microgravity compensation device. The sliding seat 2 moves along a first straight line on the fixed seat 1, and the screw 6 also moves along the first straight line on the fixed seat 1. This fixes the relative motion direction between the components and the extension / retraction direction of the elastic element 4, preventing changes in the force direction on the elastic element 4 and effectively improving the accuracy of the microgravity compensation mechanism. Furthermore, adjusting the position of the screw 6 in the first threaded hole 11 is sufficient to adjust the magnitude of the gravity compensation. Compared to the prior art involving replacing the tension spring and permanent magnet, this adjustment method is more convenient and faster.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A microgravity compensation device, characterized in that, include: The system comprises a fixed base, a sliding base, a mounting base, an elastic element, a hook base, and a screw extending along a first straight line. The sliding base is slidably mounted on the fixed base along the first straight line. The mounting base is disposed on the sliding base. The fixed base has a first threaded hole. The screw is threadedly connected to both the hook base and the first threaded hole, wherein the thread of the first threaded hole is the same as the thread of the hook base. The screw is rotatably connected to the mounting base. One end of the elastic element is detachably connected to the hook base, and the other end of the elastic element is detachably connected to the mounting base. The hook seat extends along a second straight direction; the first straight direction is perpendicular to the second straight direction; the hook seat has a second threaded hole extending along the first straight direction; the second threaded hole is threadedly connected to the screw. The elastic element is a tension spring; the hook seat has a first latch on the side facing away from the mounting base; the mounting base has a second latch; one end of the tension spring is detachably connected to the first latch, and the other end of the tension spring is detachably connected to the second latch; The tension spring is always in a stretched state; The number of tension springs is multiple, and the number of tension springs is even; the multiple tension springs are symmetrically distributed on opposite sides of the screw.

2. The microgravity compensation device according to claim 1, characterized in that, The first threaded hole passes through the fixing seat; the end of the screw away from the mounting seat has an insert groove for inserting a screwdriver.

3. The microgravity compensation device according to claim 2, characterized in that, The inlay groove is a straight groove or a cross groove.

4. The microgravity compensation device according to claim 1, characterized in that, The first checkpoint and the second checkpoint are spaced apart in the first straight line direction.

5. The microgravity compensation device according to claim 1, characterized in that, Also includes: The first bolt and the second bolt; the mounting base has a third threaded hole and a fourth threaded hole; the sliding base has a fifth threaded hole and a sixth threaded hole; the first bolt passes through the third threaded hole and the fifth threaded hole; the second bolt passes through the fourth threaded hole and the sixth threaded hole.

6. The microgravity compensation device according to claim 1, characterized in that, The first straight line direction is a vertical straight line direction; the second straight line direction is a horizontal straight line direction.

7. The microgravity compensation device according to claim 1, characterized in that, Also includes: A buffer sleeve and a limiting post are provided; the buffer sleeve is coaxially connected to the screw; the diameter of the buffer sleeve is larger than the diameter of the second threaded hole; a retaining hole is provided on the mounting base; one end of the limiting post is engaged in the retaining hole, and the other end of the limiting post is rotatably disposed in the buffer sleeve.

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