CN112901707A - Constant force damping device - Google Patents
Constant force damping device Download PDFInfo
- Publication number
- CN112901707A CN112901707A CN202110282460.8A CN202110282460A CN112901707A CN 112901707 A CN112901707 A CN 112901707A CN 202110282460 A CN202110282460 A CN 202110282460A CN 112901707 A CN112901707 A CN 112901707A
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- CN
- China
- Prior art keywords
- jackscrew
- damping device
- guide post
- clamping groove
- constant force
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes with two brake-blocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/06—Bands, shoes or pads; Pivots or supporting members therefor for externally-engaging brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/04—Friction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a constant force damping device which comprises a damper ring, friction plates, a disc spring assembly, a guide post, a pressing jackscrew and an anti-loosening jackscrew, wherein a clamping groove is formed in one end, close to an output shaft, of the damper ring, a plurality of threaded holes are uniformly distributed in the other end of the damper ring, each threaded hole is communicated with the clamping groove, and the friction plates are arranged in the clamping grooves; every screw hole is inside all to install one and to compress tightly jackscrew and one locking jackscrew, and compresses tightly the jackscrew and be located locking jackscrew below, compresses tightly jackscrew below and is equipped with the centre bore for the installation guide post, the dish spring subassembly is cup jointed to the guide post outside, and the dish spring subassembly is located the guide post and compresses tightly between the jackscrew. The constant force damping device can effectively reduce the vibration phenomenon of a shafting where the output shaft is located due to the existence of a transmission gap and unbalance of the shafting.
Description
Technical Field
The invention belongs to the field of damping and shock absorption of rotary shafting equipment, and particularly relates to a constant-force damping device.
Background
In the conventional shafting structure of a rotary device, the output torque of a motor is transmitted to an output shaft through a transmission link, a gap or weak rigidity link exists in the middle transmission links such as internal transmission of a speed reducer and key connection, the output shaft can continuously perform positioning compensation to generate vibration due to overtaking phenomenon under the influence of unbalanced forces such as gravity and inertia force in the rotation process, and the positioning is not accurate due to no control of the motor. Especially, when the grating on the output shaft system carries out closed-loop feedback on positioning, a more obvious chattering phenomenon is generated, and finally, the output shaft system is caused to be in emergency stop due to the fact that the following error is gradually increased. Although the direct drive motor can be used for eliminating the gap, the direct drive motor is too expensive, too large in volume and mass and not suitable for a rotary table with large output torque. Therefore, a constant force damping device capable of providing constant resistance is required to be installed on the output shaft of the multi-axis rotating table so as to counteract the influence of the unbalanced force on the rotation process of the output shaft caused by gravity, inertia force and the like.
Disclosure of Invention
In view of the above, the present invention is directed to a constant force damping device to solve the problem of chattering in the operation of an output shaft caused by unbalanced shafting load under the action of gravity and inertia force.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a constant force damping device comprises a damper ring, friction plates, a disc spring assembly, a guide post, a pressing jackscrew and an anti-loosening jackscrew, wherein a clamping groove is formed in one end, close to an output shaft, of the damper ring, a plurality of threaded holes are uniformly distributed in the other end of the damper ring, each threaded hole is communicated with the clamping groove, and the friction plates are installed in the clamping grooves; every screw hole is inside all to install one and to compress tightly jackscrew and one locking jackscrew, and compresses tightly the jackscrew and be located locking jackscrew below, compresses tightly jackscrew below and is equipped with the centre bore for the installation guide post, the dish spring subassembly is cup jointed to the guide post outside, and the dish spring subassembly is located the guide post and compresses tightly between the jackscrew.
Furthermore, the cross section of the clamping groove is arc-shaped.
Furthermore, the constant force damping device also comprises a bearing sheet, wherein the bearing sheet is tightly attached to the inside of the clamping groove and clamped by the blocking edges at the two sides of the clamping groove.
Furthermore, the bearing sheet is made of a hard copper alloy sheet.
Furthermore, the friction plate is a polytetrafluoroethylene plate.
Furthermore, one side of the friction plate is attached to the pressure bearing plate, the other side of the friction plate is attached to the external output shaft, and the friction plate is clamped by the blocking edges on the two sides of the clamping groove.
Furthermore, the cross section of guide post is the type of falling T structure, the cover dish spring subassembly in guide post top.
Compared with the prior art, the constant force damping device has the following advantages:
(1) the constant force damping device can effectively reduce the vibration phenomenon of a shafting where the output shaft is located due to the existence of a transmission gap and unbalance of the shafting.
(2) The constant force damping device is simple in structure, easy to process and manufacture and good in stability.
(3) The constant force damping device can provide constant damping force for the output shaft, and the damping force can be adjusted, so that the universality is strong.
(4) The constant force damping device is integrally of a semicircular ring structure, is installed on the output shaft in pairs by using screws, and is easy to disassemble and adjust.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a sectional view of a constant force damping device according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the portion X in FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
fig. 4 is a schematic diagram of the combination of the disc spring assembly, the guide post, the pressing jackscrew and the anti-loosening jackscrew according to the embodiment of the invention.
Description of reference numerals:
1-a damper ring; 2-a pressure-bearing sheet; 3, friction plate; 4-a disc spring assembly; 5-a guide post; 6, pressing the jackscrew; 7-anti-loose jackscrew; 8-fixing the frame; 9-output shaft.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A constant force damping device is shown in figures 1 to 4 and comprises a damper ring 1, a bearing plate 2, a friction plate 3, a disc spring assembly 4, a guide post 5, a pressing jackscrew 6 and an anti-loosening jackscrew 7, wherein a clamping groove is formed in one end, close to an output shaft 9, of the damper ring 1, a plurality of threaded holes are uniformly formed in the other end of the damper ring, each threaded hole is communicated with the clamping groove, and the friction plate 3 is installed in the clamping groove; every screw hole is inside all to install one and to compress tightly jackscrew 6 and one locking jackscrew 7, and compresses tightly jackscrew 6 and be located locking jackscrew 7 below, compresses tightly 6 below jackscrews and is equipped with the centre bore for installation guide post 5, the dish spring subassembly 4 is cup jointed to the guide post 5 outside, and dish spring subassembly 4 is located guide post 5 and compresses tightly between the jackscrew 6.
The cross section of the clamping groove is arc-shaped.
The damper ring 1 is connected with a fixed frame 8 of the output shaft through screws, and provides required fixed support for the whole constant force damping device, so that the constant force damping device does not rotate along with the output shaft 9.
Preferably, the clamping groove is an annular groove. The constant force damping device further comprises a bearing piece 2, wherein the bearing piece 2 is tightly attached to a clamping groove formed in the damper ring, attached to the inner ring surface and clamped by blocking edges on two sides of the clamping groove.
The bearing plate 2 is tightly attached to a clamping groove formed in the damper ring, and has the main function of bearing concentrated pressure generated by the disc spring assembly 4, providing uniform pressure for the friction plate 3 and preventing the friction plate 3 from being crushed. Preferably, the pressure-bearing sheet 2 is a hard copper alloy sheet. However, the material of the present application is not limited thereto, and any hard sheet that can achieve the present function is within the scope of the present application.
Friction disc 3 chooses for use high temperature resistant, and coefficient of friction is higher, the better material of wearability, and is preferred, and friction disc 3's material is wear-resisting polytetrafluoroethylene board for the guide rail. The friction plate is arranged in a clamping groove formed in the damper ring 1, one side of the friction plate is attached to the bearing plate 2, the other side of the friction plate is attached to the output shaft 9, and the friction plate is clamped by blocking edges on two sides of the clamping groove to provide damping force for the output shaft 9.
The cross section of the guide post 5 is of an inverted T-shaped structure, and the upper part of the guide post 5 penetrates through the disc spring assembly 4 and then is matched with a central hole formed in the pressing jackscrew 6 to form a moving pair. The central hole of the disc spring assembly 4 penetrates through the guide post 5 and is attached to the shaft shoulder of the guide post 5; the upper part of the guide post 5 penetrates through the disc spring assembly 4 and mainly provides a guide effect for the disc spring assembly 4.
The pressing jackscrew 6 is screwed into a threaded hole formed in the damper ring 1 after being combined with the guide post 5 to form a sliding pair, so that the disc spring assembly 4 on the guide post 5 is pressed, the elastic force generated by the disc spring assembly 4 is adjusted by adjusting the screwing amount of the pressing jackscrew 6, and after the disc spring assembly 4 is pressed and deformed by the pressing jackscrew 6, the pressing guide post 5 provides constant pressure for the friction plate 3 through the pressure bearing plate 2, and further constant friction force is generated between the friction plate 3 and the output shaft 9.
The disc spring component 4 is a disc spring.
Locking jackscrew 7 is after compressing tightly jackscrew 6 and twisting to suitable position, twists in the screw hole, until with compressing tightly the laminating of jackscrew 6, prevents to compress tightly jackscrew 6 and receive vibrations and dish spring subassembly 4 spring action and take off.
A constant force damping device is based on the principle that:
the damper ring 1 is fixedly connected with a fixed frame 8 of the output shaft, namely, the whole constant-force damping device does not rotate along with the output shaft 9, a clamping groove is formed in an inner side ring (namely, one side close to the output shaft 9) of the damper ring 1, and threaded holes which are uniformly distributed are drilled in an outer ring surface (namely, one side far away from the output shaft 9) and penetrate through the inner ring surface; the pressure-bearing sheet 2 is placed in a clamping groove formed in the inner ring of the damper ring 1, is attached to the inner ring surface and is clamped by blocking edges on two sides of the clamping groove; the friction plate 3 is placed in a clamping groove formed in the inner ring of the damper ring 1, is attached to the pressure bearing plate 2 and is clamped by blocking edges on two sides of the clamping groove; the central hole of the disc spring assembly 4 penetrates through the guide post 5 and is attached to the shaft shoulder of the guide post 5; the guide post 5 is matched with a central hole formed in the pressing jackscrew 6 after penetrating through the disc spring assembly 4 to form a moving pair, and the pressing jackscrew 6 is screwed into a threaded hole formed in the outer ring surface of the damper ring 1 after being combined with the guide post 5 to form the moving pair; and the anti-loosening jackscrew 7 is screwed into the threaded hole after the pressing jackscrew 6 is screwed into the threaded hole, and presses the pressing jackscrew 6.
The first embodiment is as follows:
a damper ring 1 of a constant force damping device is arranged on a frame 8 for fixing an output shaft through screws, the screwing amount of a compression jackscrew 6 is adjusted, a disc spring component 4 is compressed to generate deformation elasticity, the friction force between a friction plate 3 and the output shaft 8 is ensured according to the deformation elasticity of the disc spring component 4, at the moment, a guide post 5 provides a guide effect for the disc spring component 4, a moving pair is formed by the guide post 5 and a central hole arranged on the compression jackscrew 6, the compression jackscrew 6 does not generate direct pressure on the guide post 5, the elasticity generated by the disc spring component 4 compresses a pressure bearing plate 2 through the compression guide post 5 to provide uniform positive pressure for the friction plate 3, the pressure bearing plate 2 converts the concentrated pressure generated by the guide post 5 into more dispersed positive pressure to protect the friction plate 3, and the screwing amounts of the compression jackscrews 6 on half dampers on the same side of the constant force damping device are the same, to ensure that the friction plate 3 is subjected to a uniform positive pressure and thus the friction force between it and the output shaft 9 is the same everywhere. And operating the output shaft 9, continuously adjusting the screwing amount of the pressing jackscrew 6, further adjusting the friction force, and finally offsetting the damping force generated by the constant force damping device with the unbalanced eccentric force of the shafting in which the output shaft 9 is positioned until the shafting does not generate vibration. At the moment, the anti-loosening jackscrew 7 is screwed into the corresponding screw hole into which the pressing jackscrew 6 is screwed, and is tightly attached to the pressing jackscrew 6, so that the pressing jackscrew 6 is prevented from loosening, and constant friction force between the pressing jackscrew and the output shaft 9 is ensured.
Referring to fig. 3, a constant force damping device on a single output shaft is divided into an upper part and a lower part (the upper part and the lower part are one of the manufacturing methods), or divided into a plurality of parts, specifically according to the working conditions, to provide a constant damping force for the output shaft 9,
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A constant force damping device, characterized by: the damper ring is provided with a clamping groove at one end close to an output shaft, a plurality of threaded holes are uniformly distributed at the other end, each threaded hole is communicated with the clamping groove, and the friction plate is arranged in the clamping groove; every screw hole is inside all to install one and to compress tightly jackscrew and one locking jackscrew, and compresses tightly the jackscrew and be located locking jackscrew below, compresses tightly jackscrew below and is equipped with the centre bore for the installation guide post, the dish spring subassembly is cup jointed to the guide post outside, and the dish spring subassembly is located the guide post and compresses tightly between the jackscrew.
2. A constant force damping device as defined in claim 1, wherein: the cross section of the clamping groove is arc-shaped.
3. A constant force damping device as defined in claim 1, wherein: the bearing piece is tightly attached to the inside of the clamping groove and clamped by the blocking edges at two sides of the clamping groove.
4. A constant force damping device as defined in claim 1, wherein: the bearing sheet is made of hard copper alloy sheet.
5. A constant force damping device as defined in claim 1, wherein: the friction plate is a polytetrafluoroethylene plate.
6. A constant force damping device as defined in claim 1, wherein: one side of the friction plate is attached to the bearing plate, the other side of the friction plate is attached to an external output shaft, and the friction plate is clamped by blocking edges on two sides of the clamping groove.
7. A constant force damping device as defined in claim 1, wherein: the cross section of guide post is the type of falling T structure, the cover dish spring subassembly in guide post top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282460.8A CN112901707A (en) | 2021-03-16 | 2021-03-16 | Constant force damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282460.8A CN112901707A (en) | 2021-03-16 | 2021-03-16 | Constant force damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901707A true CN112901707A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110282460.8A Pending CN112901707A (en) | 2021-03-16 | 2021-03-16 | Constant force damping device |
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| Country | Link |
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| CN (1) | CN112901707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309800A (en) * | 2021-06-23 | 2021-08-27 | 成都千帆科技开发有限公司 | Friction damping mechanism |
-
2021
- 2021-03-16 CN CN202110282460.8A patent/CN112901707A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309800A (en) * | 2021-06-23 | 2021-08-27 | 成都千帆科技开发有限公司 | Friction damping mechanism |
| CN113309800B (en) * | 2021-06-23 | 2022-07-22 | 成都千帆科技开发有限公司 | Friction damping mechanism |
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