CN110195771B - Mechanical mechanism for realizing lifting and rotating actions and comprehensive self-locking device formed by mechanical mechanism - Google Patents
Mechanical mechanism for realizing lifting and rotating actions and comprehensive self-locking device formed by mechanical mechanism Download PDFInfo
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- CN110195771B CN110195771B CN201910647708.9A CN201910647708A CN110195771B CN 110195771 B CN110195771 B CN 110195771B CN 201910647708 A CN201910647708 A CN 201910647708A CN 110195771 B CN110195771 B CN 110195771B
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- 238000013519 translation Methods 0.000 claims abstract description 19
- 230000033001 locomotion Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 description 8
- 230000004044 response Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000001174 ascending effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D9/00—Bookmarkers; Spot indicators; Devices for holding books open; Leaf turners
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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
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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Abstract
The application relates to a mechanical mechanism for realizing lifting and rotating actions of a single power machine, which comprises a base, a screw sleeve and a screw sleeve guide table, wherein the screw sleeve guide table is arranged on the base; the mechanical mechanism has two functions of translation and rotation. The thread lift angle of the mechanical mechanism is larger than the equivalent friction angle, and the force point connecting rod and the force point are added on the mechanical mechanism, so that a mechanical device which can realize lifting and rotating actions and comprehensively self-locking by a single power machine can be formed.
Description
Technical Field
The application belongs to the field of design and manufacture of transmission equipment, and particularly relates to a high mechanical coupling mechanical mechanism for realizing ascending, forward rotation, reverse rotation and descending by using a single power machine and a high mechanical coupling mechanical device for realizing ascending, forward rotation, reverse rotation, descending and comprehensive self-locking by using the single power machine based on the mechanical mechanism.
Background
Through investigation, the existing mechanical equipment realizes the actions of ascending, forward rotation, reverse rotation and descending, and realizes the position locking and the holding of the acting force of a force application object after the power is disconnected, and the scheme of using a guide rail, a self-locking screw, a rotary table, a power machine, a guide rail, a non-self-locking screw, a rotary table, a power machine, a brake, a non-screw linear transmission mechanism, a rotary table, a power machine and a brake is adopted. These schemes have these advantages: firstly, if the linear guide rail is used for guiding, the ball screw is used for transmission, and the driving motor is provided with a code wheel, the positioning accuracy is high; secondly, the guide rail is used for guiding and bearing, so that the load capacity is high; third, since the rotation function is realized by using an independent turntable, the precision and the load capacity are high.
Technical problem
Because the existing mechanical equipment needs to realize mechanical movement in two dimensions of lifting and rotating, a guide rail is basically used in translational movement, and a turntable is used in rotational movement; this increases the volume, complexity and cost of the device, reducing the reliability of the device.
The existing devices present additional problems if the force applied to the force application object is to be maintained in an unpowered state.
If a non-self-locking screw drive is used, the following disadvantages are present: firstly, a brake device and a control device thereof are required to be added, and additional installation space is required; secondly, the mutual conversion process from the braking state to the releasing braking state of the braking device requires tens of milliseconds or more, cannot meet the higher time response requirement and increases the running power consumption; thirdly, periodic maintenance is required to ensure stability and reliability; fourth, the brake device increases the complexity and cost of the apparatus.
If self-locking screw transmission is used, the thread rise angle is smaller than the equivalent friction angle, but the screw transmission efficiency is lower, so that the requirement on the power of the power machine is increased, and the size, the running power consumption and the cost of the equipment are increased.
Therefore, in applications requiring millisecond-level time response, with high transmission efficiency, where the force is applied to the force application object and the power machine is self-locking after stopping the power output, it is necessary to develop a new mechanical device to meet these requirements.
Disclosure of Invention
In order to realize different translational motion time responses and rotational motion time responses under the drive of the same power machine, two mechanical mechanisms of a whole track fusion body (a first base and a corresponding screw mechanism) and a track and a screw sleeve check ring (a second base and a corresponding screw mechanism) for realizing lifting and rotating actions of the single power machine are developed.
The application respectively adds a force point connecting rod and a force point on the basis of a full-track fusion body (base one+corresponding screw mechanism) and a track and screw sleeve check ring (base two+corresponding screw mechanism), so as to form a mechanical device for realizing linear lifting, forward rotation, reverse rotation, linear descending and comprehensive self-locking of a single power machine.
The application discloses a mechanical mechanism I for realizing lifting and rotating actions, which comprises a base I, a screw rod, a screw sleeve and a screw sleeve guide table; the mechanical mechanism has two functions of translation and rotation, the translation function realizes the translation lifting of the screw sleeve, and the rotation function realizes the rotation of the screw sleeve; wherein, a group of guide surfaces are arranged on the first base: the guide surface I and the guide surface II are all produced by the same or different parts fixedly connected with the base I, or all produced by the base I, or one part of the guide surface I is produced by the same or different parts fixedly connected with the base I, the other part of the guide surface I is produced by the base I, the guide surface I is parallel to the screw axis or the guide surface I extends and comprises the screw axis, the guide surface II is parallel to the screw axis or comprises the screw axis after the guide surface II extends, the screw sleeve is provided with a screw sleeve guide table, the screw sleeve guide table is an independent part fixedly connected with the screw sleeve or a screw sleeve characteristic produced by the screw sleeve, and the screw sleeve guide table guides the screw sleeve to move in the order of ascending, forward rotation, reverse rotation and linear descending along the guide surface in the order of the guide surface I, the guide surface II is not adjacent to the screw surface I and the guide surface II; the base I, the guide surface, the screw sleeve and the screw sleeve guide table form a movement relation by three kinematic pairs, wherein the first kinematic pair is connected between the base I and the screw rod, the second kinematic pair is connected between the screw rod and the screw sleeve, and the third kinematic pair is connected between the guide surface and the screw sleeve guide table; the screw rod is arranged on the first base through the revolute pair, the screw rod and the screw sleeve are arranged in a spiral fit mode, and the screw sleeve guide table is contacted with the guide surface through the friction pair.
When a positive torque is applied to the screw, the screw pushes the screw sleeve to ascend along the straight guide surface I, when the screw sleeve rises to the top end of the straight guide surface I, the screw sleeve guide table contacts with the screw guide surface I, a rotation component force, which is generated by the screw sleeve and is generated by the screw guide surface, is in the same direction as a rotation component force, which is generated by the screw sleeve and is generated by the screw sleeve, of the screw sleeve, the screw axial component force, which is generated by the screw sleeve, is overcome by the screw axial component force, which is generated by the screw sleeve, of the screw sleeve, and under the combined action of the rotation force and the axial force, the screw sleeve positively rotates along the screw guide surface I until the screw sleeve guide table reaches the upper end of the screw guide surface II to stop; when reverse torque is applied to the screw rod, the movement principle is the same as that of forward torque, the screw rod pushes the screw sleeve to reversely descend along the second rotating guide surface, and the screw sleeve descends along the second rotating guide surface after being separated from the second rotating guide surface and contacting the second upper straight guide surface.
The mechanical mechanism II for realizing the lifting and rotating actions comprises a base II, a screw rod, a screw sleeve retainer ring, a screw sleeve and a screw sleeve guide table; the mechanical mechanism has two functions of translation and rotation, the translation function realizes the translation lifting of the screw sleeve, and the rotation function realizes the rotation of the screw sleeve; wherein, there is a set of guide surface on the second base: the screw guide device comprises a first straight guide surface, a second straight guide surface and a second rotating guide surface, wherein all guide surfaces are generated on the same or different parts fixedly connected with a second base, or are generated on the same or different parts fixedly connected with the second base, and the other part of the guide surfaces are generated on the second base, wherein the first straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, the second straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, a screw guide table is arranged on the screw sleeve, the screw guide table is an independent part fixedly connected with the screw sleeve or is generated on the screw sleeve, the screw guide table guides the screw sleeve to move in a straight-ascending-reverse-straight-descending order along the guide surface in the order of the first straight guide surface, and the second straight guide surface is not adjacent to the second rotating guide surface. The second base, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide table form a movement relation by three kinematic pairs, wherein the first kinematic pair is connected between the second base and the screw rod, the second kinematic pair is connected between the screw rod and the screw sleeve, and the third kinematic pair is connected between the guide surface and the screw sleeve guide table; the screw rod is arranged on the second base through the revolute pair, the screw rod and the screw sleeve are arranged in a spiral fit mode, the screw sleeve guide table is contacted with the guide surface through the friction pair, and the screw sleeve check ring is coaxially fixed on the screw rod.
When a forward torque is applied to the screw, the screw pushes the screw sleeve to ascend along the first straight guide surface, the constraint is released when the screw sleeve ascends to the top end of the first straight guide surface, the screw sleeve rotates forward and ascends simultaneously, and the length of the second spiral guide surface relative to the axial direction of the screw rod is determined according to parameters such as a thread lifting angle, the total mass and comprehensive rotational inertia of the screw sleeve and a part fixedly connected with the screw sleeve, and the like, so that the rotating speed of the screw sleeve in the process of descending in the reverse rotation is increased by the second spiral guide surface, and the screw sleeve is required to contact with the screw sleeve retainer ring and be integrated with the screw rod before the screw sleeve guide table reaches the second spiral guide surface under the condition that the screw sleeve rotates forward and does not increase the rotating speed, and the screw sleeve and the screw rod rotate forward to the upper end of the second spiral guide surface under the action of the torque transmitted to the screw rod by the power machine and the comprehensive rotational kinetic energy from the power machine to the screw rod; when a reverse torque is applied to the screw, a rotation component force, which is generated by the screw on the screw sleeve and is generated by the screw on the screw sleeve, around the screw axis is in the same direction as a rotation component force, which is generated by the screw on the screw sleeve, around the screw axis, so that a rotation force of the screw sleeve is formed, and a screw axial component force, which is generated by the screw on the screw sleeve, overcomes a screw axial component force, which is generated by the screw on the screw sleeve, so that an axial force of the screw sleeve is formed, and the screw sleeve reversely rotates and descends along the second rotation surface under the combined action of the rotation force and the axial force, and descends along the second rotation surface after the screw sleeve is separated from the second rotation surface and contacts the second rotation surface.
The application discloses a mechanical device for realizing comprehensive self-locking by respectively applying the mechanical mechanisms for realizing lifting and rotating actions, which is provided with a force point connecting rod and a force point on the basis of any one of the mechanical mechanisms I and II; the screw rod is fixedly arranged on the screw sleeve, the force point is an independent part fixedly arranged on the force point connecting rod or a part of an integral part integrally machined with the force point connecting rod, the length of a beam of the force point connecting rod and the length of the screw sleeve are selected under the condition that the thread lead angle is larger than the equivalent friction angle, the force is exerted on a force application object by the force point, the screw sleeve can realize axial comprehensive self-locking of the screw rod to keep the acting force of the force point on the force application object under the condition that the torque is stopped being exerted on the screw rod by the power machine, and the screw sleeve can immediately release the comprehensive self-locking state when the power machine outputs reverse torque smaller than the torque used by the acting force exerted on the force application object by the force point on the screw rod under the comprehensive self-locking state.
Advantageous effects
The screw thread lift angle of the screw rod and the screw sleeve is larger than the equivalent friction angle, so that the transmission efficiency of the screw rod to the screw sleeve is improved; because the rotary motion is realized without using a rotary table and the acting force of a force point on a force application object is kept without using a brake device, fault links of the rotary table and the brake device are eliminated, the reliability of equipment is improved, the equipment formed by the rotary table is lighter, the volume is smaller, the cost is lower, the functional requirements of a driving and controlling system are reduced, and the driving and controlling system is simplified; the brake device is not used, the time for applying the band-type brake and removing the band-type brake is saved, the process of achieving and releasing the axial locking of the screw rod by the force point is quicker, and the dynamic response performance of the force point is improved.
Drawings
FIG. 1 is a schematic view of a first mechanical mechanism for realizing lifting and rotating actions;
FIG. 2 is a schematic structural diagram of a second mechanical mechanism for implementing a lifting and rotating action according to the present application;
FIG. 3 is a schematic structural view of a second mechanical mechanism for implementing lifting and rotating actions;
FIG. 4 is a schematic diagram of a mechanical device for realizing lifting and rotating actions and comprehensive self-locking in the application;
in the figure: 1-base I, 2-base II, 3-straight guide surface I, 4-straight guide surface II, 5-transition surface, 6-rotary guide surface I, 7-rotary guide surface II, 8-screw, 9-screw sleeve, 10-screw sleeve guide table, 11-screw sleeve retainer ring, 12-force point connecting rod and 13-force point
Detailed Description
First, some words, reference numerals, drawings, and some words of the embodiments used in the present application will be explained.
In the description and claims of the present application, the words "comprising," including, "" consisting of, "and the like are to be construed as including, rather than being exclusive or exhaustive, that is," including but not limited to.
"upper" is an orientation upward in the axial direction, and "lower" is an orientation downward in the axial direction.
The length of the force point connecting rod beam is defined as the distance from the center point of the force applied by the force point to the force application object to the axis of the screw.
In the various drawings of the application, like elements are designated with the same or similar reference numerals. For clarity, the various features of the drawings are not drawn to scale.
Track groove one: the base is positioned on the first base 1 and consists of a first straight guide surface 3, a second straight guide surface 4, a first rotary guide surface 6 and a second rotary guide surface 7, wherein the first straight guide surface 3 is intersected with the second rotary guide surface 7, and the second straight guide surface 4 is intersected with the first rotary guide surface 6; track groove II: the base is positioned on the second base 2 and consists of a first straight guide surface 3, a second straight guide surface 4, a transition surface 5 and a second rotating guide surface 7, wherein the first straight guide surface 3 and the second rotating guide surface 7 are intersected and transited; the first straight guide surface 3 in the first track groove and the second track groove is parallel to the axis of the screw rod 8 or the first straight guide surface 3 extends to contain the axis of the screw rod 8, and the second straight guide surface 4 in the first track groove and the second track groove is parallel to the axis of the screw rod 8 or the second straight guide surface 4 extends to contain the axis of the screw rod 8; the screw sleeve 9 is provided with a screw sleeve guide table 10, and in the following embodiment, the screw sleeve guide table 10 is a screw sleeve 9 characteristic generated on the screw sleeve 9, and is a cylindrical boss on the screw sleeve 9, the cylindrical surface of the cylindrical boss is positioned in the first track groove or the second track groove and is contacted with one side of the first track groove or the second track groove through a friction pair, so that the cylindrical surface of the cylindrical boss is simply called a friction surface of the screw sleeve 9.
The mechanical mechanism for realizing the lifting and rotating action of the single power machine and the mechanical device for realizing the lifting and rotating action and comprehensive self-locking of the single power machine, which are provided by the application, are described in detail below with reference to figures 1, 2, 3 and 4 of the accompanying drawings.
Example 1
As shown in fig. 1, the application is a mechanical mechanism I for realizing lifting and rotating actions, comprising a base I1, a screw rod 8 and a screw sleeve 9; the mechanical mechanism has two functions of translation and rotation, wherein the translation function realizes the translation lifting of the screw sleeve 9, and the rotation function realizes the rotation of the screw sleeve 9; the base I1, the screw rod 8 and the screw sleeve 9 form a movement relation by three kinematic pairs, wherein the first kinematic pair is a revolute pair connected between the base I1 and the screw rod 8, the second kinematic pair is a screw pair connected between the screw rod 8 and the screw sleeve 9, and the third kinematic pair is a friction pair connected between the base I1 and the screw sleeve 9; the screw rod 8 is arranged on the first base 1 through a revolute pair, the screw rod 8 and the screw sleeve 9 are arranged in a screw fit mode, and the friction surface of the screw sleeve 9 is contacted with one side of the first track groove of the first base 1 through a friction pair.
When a positive torque is applied to the screw rod 8, the screw rod 8 pushes the screw sleeve 9 to ascend along the straight guide surface one 3 of the track groove one, when the screw rod 8 ascends to the top end of the straight guide surface one 3, the friction surface of the screw sleeve 9 is contacted with the spiral guide surface one 6, the rotation component force, which is generated by the screw rod 8 on the screw sleeve 9 and is generated by the spiral guide surface one 6 on the screw sleeve 9, around the axis of the screw rod 8 is in the same direction as the rotation component force, which is generated by the screw rod 8 on the screw sleeve 9, around the axis of the screw rod 8, so that the rotation component force, which is generated by the screw rod 8 on the screw sleeve 9, overcomes the axial component force, of the screw rod 8, which is generated by the spiral guide surface one 6 on the screw sleeve 9, so that the axial force of the screw sleeve 9 is formed, under the combined action of the rotation force and the axial force, the screw sleeve 9 positively ascends along the spiral guide surface one 6 until the friction surface of the screw sleeve 9 reaches the upper end of the spiral guide surface two 7.
When a reverse torque is applied to the screw rod 8, the movement principle is the same as that of the screw rod 8 for applying a forward torque, the screw rod 8 pushes the screw sleeve 9, so that the friction surface of the screw sleeve 9 reversely descends along the second spiral guide surface 7, and after the friction surface of the screw sleeve 9 is separated from the second spiral guide surface 7 and contacts the second straight guide surface 4, the screw sleeve descends along the second straight guide surface 4. The screw sleeve 9 completes the actions of ascending, forward rotation, reverse rotation and descending, and in the whole action process, the friction surface of the screw sleeve 9 is always restrained by the first track groove, so that the reliability of the action is ensured, and the requirement of high dynamic response is met.
Example 2
As shown in fig. 2 and 3, the application is a mechanical mechanism II for realizing lifting and rotating actions, comprising a base II 2, a screw rod 8, a screw sleeve 9 and a screw sleeve check ring 11; the mechanical mechanism has two functions of translation and rotation, wherein the translation function realizes the translation lifting of the screw sleeve 9, and the rotation function realizes the rotation of the screw sleeve 9; the base II 2, the screw rod 8 and the screw sleeve 9 form a movement relation by three kinematic pairs, wherein the first kinematic pair is a revolute pair connected between the base II 2 and the screw rod 8, the second kinematic pair is a screw pair connected between the screw rod 8 and the screw sleeve 9, and the third kinematic pair is a friction pair connected between the base II 2 and the screw sleeve 9; the screw rod 8 is arranged on the second base 2 through a revolute pair, the screw rod 8 and the screw sleeve 9 are arranged in a screw fit manner, the friction surface of the screw sleeve 9 is contacted with one side of the second track groove of the second base 2 through a friction pair, and the screw sleeve retainer ring 11 is coaxially fixed on the screw rod 8.
When a forward torque is applied to the screw 8, the screw 8 pushes the screw sleeve 9 to ascend along the first straight guide surface 3 of the track groove two, the constraint is released when the screw sleeve 9 ascends to the top end of the first straight guide surface 3, the screw sleeve 9 rotates forward and ascends simultaneously, the length of the second spiral guide surface 7 relative to the axial direction of the screw 8 is determined according to parameters such as the thread angle of the screw 8, the total mass and the comprehensive rotational inertia of the screw sleeve 9 and parts fixedly connected with the screw sleeve 9, and the like, so that the rotation speed of the screw sleeve 9 in the reverse rotation descending process is increased by the second spiral guide surface 7, the screw sleeve 9 is required to contact the screw sleeve retainer 11 and be integrated with the screw 8 before the friction surface of the screw sleeve 9 reaches the second spiral guide surface 7 under the condition that the screw sleeve 9 rotates forward and does not increase the rotation speed of the screw sleeve 9, and the screw sleeve 9 and the screw 8 rotate forward to the upper end of the second spiral guide surface 7 under the action of the torque transmitted to the screw 8 by a power machine and the comprehensive rotational kinetic energy from the power machine to the screw 8.
When a reverse torque is applied to the screw rod 8, a rotation component force, which is generated by the screw rod 8 on the screw sleeve 9 and is generated by the screw sleeve 9 on the screw guide surface II, is in the same direction as a rotation component force, which is generated by the screw sleeve 9 and is around the screw rod 8, so that a rotation force of the screw sleeve 9 is formed, an axial component force, which is generated by the screw rod 8 on the screw sleeve 9, is overcome by the screw rod 8 axial component force generated by the screw sleeve 9 on the screw guide surface II, so that the screw sleeve 9 reversely rotates and descends along the screw guide surface II 7 under the combined action of the rotation force and the axial force, and descends along the screw guide surface II 4 after the screw sleeve 9 is separated from the screw guide surface II 7 and contacts the screw guide surface II 4. Up-forward rotation-reverse rotation-descending actions of the screw sleeve 9 are completed, and in the whole action process, the friction surface of the screw sleeve 9 is always restrained by the second track groove, so that the action reliability is ensured; in the forward rotation process of the screw sleeve 9, the friction surface of the screw sleeve 9 is not contacted with the transition surface 5, so that the torque transmitted to the screw rod 8 by the power machine and the comprehensive rotation kinetic energy from the power machine to the screw rod 8 are fully utilized, the screw sleeve 9 can complete the rotation action more quickly, and the higher dynamic response requirement is met.
Example 3
As shown in fig. 4, the mechanical device is a type of lifting and rotating and comprehensive self-locking mechanical device formed by adding the force point connecting rod 12 and the force point 13 based on the mechanical mechanism one or the mechanical mechanism two respectively, and the mechanical device formed based on the mechanical mechanism one is described in detail below.
The force point connecting rod 12 is fixedly arranged on the screw sleeve 9, and the force point connecting rod 12 and the force point 13 are fixedly arranged.
Driving the screw rod 8 to enable the screw sleeve 9 to ascend, rotate forwards and descend reversely; under the condition that the thread lead angle is larger than the equivalent friction angle, selecting two parameters of the length of a beam of a force point connecting rod 12 and the length of a screw sleeve 9, then applying acting force to an application object at a force point 13, and after a power machine stops applying torque to a screw rod 8, the screw sleeve 9 can realize axial comprehensive self-locking of the screw rod 8 so as to maintain the acting force of the force point 13 to the application object in a unpowered state; in the comprehensive self-locking state, when the power machine outputs reverse torque smaller than the torque used by the force point 13 to apply the acting force to the force application object to the screw rod 8, the screw sleeve 9 can immediately release the comprehensive self-locking state; the whole mechanical device has the mechanical functions of ascending, forward rotation, reverse rotation, descending and comprehensive self-locking.
Industrial applicability
The mechanical mechanism for realizing the lifting and rotating action by the single power machine and the mechanical device for realizing the lifting and rotating action and comprehensive self-locking by the single power machine have the following characteristics: (1) The structure is simple and compact, the number of parts is small, the manufacturing and the debugging are easy, and the modularization is easy to realize; (2) One mechanism or one device only needs one power machine, such as the power machine is a motor, and the comprehensive self-locking can be reliably released even if the motor is restarted reversely after locked rotation, so that the driving and controlling objects are fewer, and the requirements on the driving and controlling devices are low; (3) The number of matched devices required for realizing the mechanical function is small, the mechanical efficiency is high, and the time response is quick; (4) The low speed and the high speed are applicable, a large lead screw with higher transmission efficiency can be adopted, impact load can be born, the rigidity is good, and the stability is high; (5) The device is suitable for indoor and outdoor environments with high temperature, high electromagnetism, dust and the like, and lubrication measures are not needed; (6) high reliability and low manufacturing and operating costs.
Claims (3)
1. A mechanical mechanism for realizing lifting and rotating actions comprises a first base, a screw sleeve and a screw sleeve guide table; the mechanical mechanism has two functions of translation and rotation, the translation function realizes the translation lifting of the screw sleeve, and the rotation function realizes the rotation of the screw sleeve; the device is characterized in that a group of guide surfaces are arranged on the first base: the screw sleeve comprises a first straight guide surface, a second straight guide surface, a first rotating guide surface and a second rotating guide surface, wherein all guide surfaces are generated on the same or different parts fixedly connected with a first base, or are generated on the same or different parts fixedly connected with the first base, and the other part of the guide surfaces are generated on the first base, the first straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, the second straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, a screw sleeve guide table is arranged on the screw sleeve, and the screw sleeve guide table is an independent part fixedly connected with the screw sleeve or is generated on the screw sleeve characteristic of the screw sleeve; the base I, the guide surface, the screw sleeve and the screw sleeve guide table form a movement relation by three kinematic pairs, wherein the first kinematic pair is connected between the base I and the screw rod, the second kinematic pair is connected between the screw rod and the screw sleeve, and the third kinematic pair is connected between the guide surface and the screw sleeve guide table; the screw rod is arranged on the first base through a revolute pair, the screw rod and the screw sleeve are arranged in a spiral fit manner, and the screw sleeve guide table is contacted with the guide surface through a friction pair; when a positive torque is applied to the screw, the screw pushes the screw sleeve to ascend along the straight guide surface I, and when the screw sleeve rises to the top end of the straight guide surface I, the screw sleeve guide table contacts with the spiral guide surface I, and the rotation component force, which is generated by the screw on the screw sleeve and is generated by the spiral guide surface I, around the screw axis is in the same direction as the rotation component force, which is generated by the spiral guide surface I, around the screw axis; when a reverse torque is applied to the screw, the principle of motion is the same as that of the forward torque.
2. A mechanical mechanism for realizing lifting and rotating actions comprises a second base, a screw sleeve retainer ring, a screw sleeve and a screw sleeve guide table; the mechanical mechanism has two functions of translation and rotation, the translation function realizes the translation lifting of the screw sleeve, and the rotation function realizes the rotation of the screw sleeve; the device is characterized in that a group of guide surfaces are arranged on the second base: the screw sleeve comprises a first straight guide surface, a second straight guide surface and a second rotating guide surface, wherein all guide surfaces are generated on the same or different parts fixedly connected with a second base, or are generated on the same or different parts fixedly connected with the second base, and the other part of the guide surfaces are generated on the second base, the first straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, the second straight guide surface is parallel to the screw axis or comprises the screw axis after being extended, a screw sleeve guide table is arranged on the screw sleeve, and the screw sleeve guide table is an independent part fixedly connected with the screw sleeve or is generated on the screw sleeve characteristic of the screw sleeve; the second base, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide table form a movement relation by three kinematic pairs, wherein the first kinematic pair is connected between the second base and the screw rod, the second kinematic pair is connected between the screw rod and the screw sleeve, and the third kinematic pair is connected between the guide surface and the screw sleeve guide table; the screw rod is arranged on the second base through a revolute pair, the screw rod and the screw sleeve are arranged in a spiral fit manner, the screw sleeve guide table is contacted with the guide surface through a friction pair, and the screw sleeve check ring is coaxially fixed on the screw rod; when a reverse torque is applied to the screw, the rotation component force, which is generated by the screw on the screw sleeve and is around the screw axis, is in the same direction as the rotation component force, which is generated by the two pairs of screw sleeves on the spiral surface, around the screw axis, so that the rotation force of the screw sleeve is formed.
3. A mechanical device using the mechanical mechanism for realizing lifting and rotating actions according to claim 1 or claim 2, wherein a force point connecting rod and a force point are respectively added on any one of the mechanical mechanisms according to claim 1 or claim 2; the screw axial self-locking device is characterized in that a force point connecting rod is fixedly arranged on a screw sleeve, a force point is a part of an independent part fixedly arranged on the force point connecting rod or an integral part integrally machined with the force point connecting rod, the length of a beam of the force point connecting rod and the length of the screw sleeve are selected under the condition that the thread lead angle is larger than an equivalent friction angle, acting force is applied to a force application object by the force point, and the screw sleeve can realize axial comprehensive self-locking of the screw rod to keep the acting force of the force point on the force application object under the condition that the power machine stops applying torque to the screw rod.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357912.9A CN109185414A (en) | 2018-11-15 | 2018-11-15 | Realize the mechanical mechanism of lifting rotation movement and its pressure page equipment of composition |
| CN2018113579129 | 2018-11-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110195771A CN110195771A (en) | 2019-09-03 |
| CN110195771B true CN110195771B (en) | 2023-12-08 |
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| CN201811357912.9A Pending CN109185414A (en) | 2018-11-15 | 2018-11-15 | Realize the mechanical mechanism of lifting rotation movement and its pressure page equipment of composition |
| CN201910647708.9A Active CN110195771B (en) | 2018-11-15 | 2019-07-18 | Mechanical mechanism for realizing lifting and rotating actions and comprehensive self-locking device formed by mechanical mechanism |
| CN201910647192.8A Withdrawn CN110185764A (en) | 2018-11-15 | 2019-07-18 | The equipment that one kind realizes pressure page and accessible page turning |
| CN201910867930.XA Active CN110486438B (en) | 2018-11-15 | 2019-09-15 | Equipment for realizing page pressing and barrier-free page turning |
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| CN201910647192.8A Withdrawn CN110185764A (en) | 2018-11-15 | 2019-07-18 | The equipment that one kind realizes pressure page and accessible page turning |
| CN201910867930.XA Active CN110486438B (en) | 2018-11-15 | 2019-09-15 | Equipment for realizing page pressing and barrier-free page turning |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020098301A1 (en) | 2018-11-15 | 2020-05-22 | 段沧桑 | Mechanical mechanism for implementing lifting and rotating actions and comprehensive self-locking device consisting of same |
| CN111471824A (en) * | 2020-04-29 | 2020-07-31 | 成都亿兆晶创科技有限公司 | Top-blowing powder spraying method for electric furnace smelting |
| CN112293940B (en) * | 2020-09-18 | 2022-06-28 | 黑龙江工业学院 | Be applied to device of reading of leading of preschool education |
| CN113574994B (en) * | 2020-10-30 | 2023-01-17 | 湖南涌创科技有限责任公司 | Growth promoting device for family plants |
| CN114321307B (en) * | 2022-01-17 | 2024-04-26 | 四川大学 | Screw transmission structure |
| CN114590051B (en) * | 2022-04-15 | 2023-06-16 | 广州标控科技有限公司 | Book continuous page turning processing system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109185414A (en) | 2019-01-11 |
| CN110486438A (en) | 2019-11-22 |
| CN110185764A (en) | 2019-08-30 |
| CN110195771A (en) | 2019-09-03 |
| CN110486438B (en) | 2024-02-09 |
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