CN110486438B

CN110486438B - Equipment for realizing page pressing and barrier-free page turning

Info

Publication number: CN110486438B
Application number: CN201910867930.XA
Authority: CN
Inventors: 段沧桑
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-15
Filing date: 2019-09-15
Publication date: 2024-02-09
Anticipated expiration: 2039-09-15
Also published as: CN109185414A; CN110195771A; CN110486438A; CN110185764A; CN110195771B

Abstract

The invention relates to a device for realizing page pressing and barrier-free page turning by using a mechanical device with the functions of 'releasing the pressing state of a pressing point-mechanical locking-ascending straight line-rotating forward-rotating backward-descending straight line-pressing and mechanical locking to keep the pressing state of the pressing point', or 'releasing the pressing state of the pressing point-mechanical locking-rotating ascending-rotating descending-pressing and mechanical locking to keep the pressing state of the pressing point', which provides the structure and principle of the applied mechanical device, and describes a trigger logic for realizing page pressing and barrier-free page turning and the action sequence of the pressing point of the applied mechanical device by an example form.

Description

Equipment for realizing page pressing and barrier-free page turning

Technical Field

The invention belongs to the field of design and manufacture of transmission equipment, and particularly relates to a high mechanical coupling mechanical device which uses a single power machine to realize 'mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing under the state of releasing pressure point pressure and mechanical locking so as to keep the state of pressure point pressure'; and another type of high mechanical coupling mechanism that realizes "mechanical lock-rotation up-rotation down-pressing under the pressing point pressing state is released and mechanical lock to maintain the pressing point pressing state".

Background

With the increasing progress of technology, electronic books are increasingly popular in reading, and have the advantages of convenience in carrying, large storage capacity of books, convenience in page turning and the like. Paper books have long been necessary. Because of the copyright problem, many books only have paper plates, and people still prefer paper books for books which are used for a long time and need to be carefully read; the electronic book screen is small in size and font, and eyes are easy to fatigue after reading; especially, when a player of a musical instrument is faced with a music score, eyes are dynamic and far away from the music score, eyes are more tired, and a paper music book is more needed. Through research, paper books are mainstream under the conditions of classical reading or research reading and the like in schools, musical instrument playing and the like at present. In general, paper book reading will still be the basic reading modality for a longer period of time in the future.

However, paper books sometimes require hand stabilization for reading, which can be tiring for long periods of time. When the musical instrument is played, the music book stands on the music stand, and the pages of the music book are required to be fixed when losing the gravity effect; however, the existing fixing methods cause difficulty in turning pages, and the turning pages can be completed only by a plurality of actions of two hands. Therefore, there is a need in the market for a device that has a page fixing function and is more convenient to turn pages.

The market investigation result shows that no equipment aiming at common paper books exists in the market at present, and meanwhile, the market investigation shows that even if pages are manually turned, the equipment can automatically complete mechanical actions such as pressing the pages, releasing the pressing state, avoiding the turned pages and the like, and the natural manual page turning process of similar pages without any page turning obstacle is realized, so that the market demand can be obtained.

Considering that the pressing points of the page pressing and barrier-free page turning equipment cannot interfere hands and pages in the manual page turning process, the action requirements on the pressing points in the technical scheme are as follows: releasing the mechanical locking-the linear rising-the stopping after rotating forward by 90 degrees (when the hand and the turned pages pass through the movement range of a certain pressing point of the page pressing and barrier-free page turning equipment), rotating reversely by 90 degrees-the linear falling-pressing and mechanically locking to keep the pressing point pressing state; or is: releasing the mechanical lock-rotating up by 90 ° (when the hand and the turned pages pass over the range of motion of the pressing point of the page pressing and unobstructed page turning device) -rotating down-pressing and mechanically locking to maintain the pressing point pressing state. The mechanical response of the pressing point is quick, and the pressing point can follow the page turning hand to act in time.

For the mechanical device of the mechanical locking-linear rising-forward rotation-reverse rotation-linear falling-pressing and mechanical locking under the state of releasing the pressing point to keep the pressing point pressing state, the inventor invented a mechanical mechanism for realizing lifting and rotating action (ZL 2013 0490632.6) as claimed in claim 1, which can meet the functional requirement of the part of the mechanical mechanism of the linear rising-forward rotation-reverse rotation-linear falling-pressing.

In addition, through investigation, the existing mechanical equipment is required to realize the actions of 'linear ascending-forward rotation-reverse rotation-linear descending-pressing down', and realize position locking and maintaining of the pressure of a pressing object after power is disconnected, and the mechanical equipment adopts 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 and a brake. 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, and the mechanical efficiency 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

Since 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 reduces the dynamic response capability of the device, increases the volume, complexity and cost of the device, and reduces the reliability of the device.

The existing apparatus brings about another problem if the pressure on the pressing object is to be maintained in the unpowered state.

If a non-self-locking screw drive is used, the following disadvantages are present: firstly, a brake device and a control function thereof need to be added, and extra installation space is needed; secondly, the process of switching between the braking state and the releasing braking state of the braking device requires tens of milliseconds or more, which cannot meet the higher time response requirement and increases the operation 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 the self-locking screw is used for transmission, the thread lead angle is smaller than or equal to the equivalent friction angle (when the thread lead angle of the screw and the screw sleeve is smaller than or equal to the equivalent friction angle, the screw sleeve has axial self-locking performance on the screw), but at the moment, the screw transmission efficiency is lower due to the smaller thread lead angle, so that the requirement on the power of the power machine is increased, and the volume, the running power consumption and the cost of the equipment are increased.

Therefore, in applications requiring millisecond-level time response, with high transmission efficiency, which apply pressure to a pressing object and are self-locking without power, such as page pressing and barrier-free page turning equipment, new mechanical devices are required to be developed to meet the requirements.

Disclosure of Invention

In order to realize faster translational motion time response and rotational motion time response under the drive of the same power machine and further improve the reliability and mechanical efficiency of the mechanism, after the inventor completes the mechanical mechanism of the invention patent 'a mechanical mechanism for realizing lifting and rotating actions' (ZL 2013 1 0490632.6) claim 1, the mechanical mechanism for realizing lifting and rotating actions of the two single power machines of 'an all-track fusion (base one+corresponding screw mechanism)' and 'a track+a screw sleeve retainer ring (base two+corresponding screw mechanism)' is continuously developed.

The invention adds a pressure point connecting rod, a pressure point and a power machine on the basis of mechanical mechanisms of a mechanical mechanism (ZL 2013 1 0490632.6) for realizing lifting and rotating actions, a full-track fusion body (base I+corresponding screw mechanism) and a track+screw sleeve retainer ring (base II+corresponding screw mechanism) of the inventor, so that different mechanical devices are formed. In actual engineering design, if the screw sleeve length and the screw thread lift angle of the screw rod and the screw sleeve which are larger than the equivalent friction angle are determined, the critical pressure point connecting rod beam length for realizing the screw rod axial self-locking of the pressure point is obtained by gradually changing the length of the pressure point connecting rod beam (the length of the pressure point connecting rod beam is defined as the distance from the center point of the pressure point applying pressure to a pressure object to the screw rod axis), and the screw thread lift angle of the screw rod and the screw sleeve at the moment is also the critical thread lift angle of the axial self-locking of the pressure point screw rod for specific parameters such as the screw sleeve length, the length of the pressure point connecting rod beam and the like, namely the comprehensive self-locking angle; the comprehensive self-locking angle is always larger than the equivalent friction angle of the screw rod and the screw sleeve. Under the condition that the pressure point applies pressure to the pressing object and stops applying torque to the screw rod, when the thread lead angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point to the pressing object is maintained, and when the thread lead angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, the pressure of the braking device for maintaining the pressure point to the pressing object is increased; therefore, a mechanical device which is mechanically locked and maintains the pressing point pressing state by a single power machine and realizes the mechanical functions of mechanical locking under the pressing point pressing state releasing, linear rising, forward rotation, reverse rotation, linear descending and pressing is formed.

For the mechanical functional requirements of "releasing mechanical lock-rotation up-rotation down-pressing and mechanical lock to maintain the pressing point pressing state in the pressing point pressing state", the inventor developed a mechanical device composed of a base, a worm wheel shaft, a pressing point connecting rod, and a power machine.

The specific mechanical device realizing the mechanical locking-linear rising-forward rotation-reverse rotation-linear falling-pressing and mechanical locking under the state of releasing the pressing point pressing to maintain the mechanical function of the pressing point pressing state and the mechanical locking-rotational rising-rotational falling-pressing and mechanical locking under the state of releasing the pressing point pressing to maintain the mechanical function of the pressing point pressing state can be independently applied to the page pressing and barrier-free page turning equipment of the application, and the independent technical characteristics of the page pressing and barrier-free page turning equipment are respectively shown in the claims 2 to 5 of the application. Based on the specific mechanical devices, a control device consisting of a sensor or an image identifier, a driver and a controller is added, so that the page pressing and barrier-free page turning equipment can be formed.

The invention discloses a mechanical device I for realizing 'mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing under the state of pressing point pressing and mechanical locking to keep the state of pressing point pressing', which consists of a base I, a screw rod, a screw sleeve guide table, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base I; the screw and the threaded sleeve are axially self-locked by the pressure point relative to the screw when the thread lead angle of the screw and the threaded sleeve is smaller than or equal to the comprehensive self-locking angle, and a group of guide surfaces are arranged on the first base: the screw rod is arranged on the base one through the revolute pair, the screw rod and the screw sleeve are arranged on the screw sleeve through the spiral fit, the screw sleeve guide table is an independent part fixedly connected with the screw sleeve or is characterized by a screw sleeve, a movement relation is formed among the base one, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide table by three kinematic pairs, the first is a revolute pair connected between the base one and the screw rod, the second is a revolute pair connected between the screw rod and the screw sleeve, the third is a friction pair connected between the guide surface and the screw sleeve guide table, the screw rod is arranged on the base one through the revolute pair, the screw rod and the screw sleeve are arranged on the screw sleeve through the screw pair, the screw rod and the screw sleeve are arranged on the screw sleeve guide table through the spiral fit, and the screw sleeve guide table is arranged on the connecting rod and the connecting rod is integrally pressed at the same point as the connecting rod through the guide table, and the connecting rod is arranged on the connecting rod and the connecting rod is integrally pressed at the connecting rod.

When a forward torque is applied to the screw (the forward torque is larger than the torque required by a release pressure point about the axial self-locking state of the screw or the braking state is released), the screw pushes the screw sleeve to ascend along the straight guide surface I, when the screw sleeve is ascended to the top end of the straight guide surface I, the screw sleeve guide table is contacted with the screw guide surface I, the rotation component force of the screw sleeve generated by the screw sleeve around the screw axis is in the same direction as the rotation component force of the screw sleeve generated by the screw guide surface I around the screw axis, so that the rotation force of the screw sleeve is formed, the screw axial component force of the screw sleeve generated by the screw sleeve overcomes the screw axial component force of the screw sleeve generated by the screw guide surface I, the screw sleeve is positively rotated and ascended 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 after the screw sleeve is separated from the second rotating guide surface and contacts the second upper straight guide surface, the screw sleeve descends along the second straight guide surface until the pressing point contacts the pressing object, and pressure is applied to the pressing object; when the torque is stopped, if the thread lead angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept, and if the thread lead angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept by using a brake device.

The invention discloses a mechanical device II for realizing 'mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing under the state of pressing point pressing and mechanical locking to keep the state of pressing point pressing', which consists of a base II, a screw rod, a screw sleeve check ring, a screw sleeve guide table, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base II, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread rise angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle and a manual mode is needed, a manual wheel is required to be coaxially and fixedly arranged at one end of the screw rod, and if the thread rise angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, a braking device which is fixed on the base II and brakes the screw rod or the screw sleeve in a braking state is required to be additionally arranged; the screw and the threaded sleeve are axially self-locked by the pressure point relative to the screw when the thread lead angle of the screw and the threaded sleeve is smaller than or equal to the comprehensive self-locking angle, and the second base is provided with a group of guide surfaces: the screw guide table is an independent part fixedly connected with the screw sleeve or is characterized in that the screw guide table is a screw sleeve feature generated on the screw sleeve, the base II, the guide surface, the screw sleeve and the screw sleeve guide table form a motion relation by three kinematic pairs, the first is a revolute pair connected between the base II and the screw, the second is a screw pair connected between the guide surface and the screw sleeve guide table, the screw is arranged on the base II through the revolute pair, the screw and the screw sleeve are arranged through the screw pair, the screw guide table is an independent part fixedly connected with the screw sleeve or is a screw sleeve feature generated on the screw sleeve, the base II, the guide surface, the screw sleeve and the screw sleeve guide table form a motion relation by three kinematic pairs, the first is a revolute pair connected between the base II and the screw, the second is a screw pair connected between the guide surface and the screw sleeve guide table, the screw is arranged on the base II through the revolute pair, the screw and the screw sleeve is arranged on the screw sleeve guide table through the revolute pair, the screw and the screw sleeve is fixedly pressed on the screw sleeve through the friction pair guide table, the screw guide table is fixedly pressed on the connecting rod with the connecting rod or is integrally pressed on the connecting rod, the connecting rod is fixedly pressed on the connecting rod, and is integrally pressed on the connecting rod, and is fixedly pressed on the connecting rod.

When a forward torque is applied to the screw (the forward torque is larger than the torque required by a release pressure point about the axial self-locking state of the screw or the braking state is released), the screw pushes the screw sleeve to ascend along the first straight guide surface, and when the screw sleeve ascends to the top end of the first straight guide surface, the restraint is released, the screw sleeve simultaneously rotates forward and ascends, and the length of the second rotary guide surface about the axial direction of the screw is determined according to the 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 second rotary guide surface increases the rotating speed of the screw sleeve in the reverse rotation descending process, and therefore, before the screw sleeve rotates forward and does not increase the rotating speed of the screw sleeve, the screw sleeve guide table is required to contact the screw sleeve retainer ring and be integrated with the screw rod, and the screw sleeve and the screw rod rotate forward to the screw sleeve guide table to the upper end of the second rotary guide surface under the action of the torque transferred to the screw rod and the comprehensive rotational kinetic energy equivalent 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 under the combined action of the rotation force and the axial force, the screw sleeve reversely rotates and descends along the screw sleeve, and after the screw sleeve is separated from the screw sleeve and contacts the upper straight guide surface II, descends along the straight guide surface II until a pressing point contacts a pressing object, and then the pressing object is pressed; when the torque is stopped, if the thread lead angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept, and if the thread lead angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept by using a brake device.

The invention discloses a mechanical device III for realizing 'mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing under the state of pressing point pressing and mechanical locking to keep the state of pressing point pressing', which comprises a base III, a screw rod, a screw sleeve check ring, a screw sleeve revolving frame, a screw sleeve, a torsion spring, a spring plunger, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base III, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread rise angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle and a manual mode is needed, a manual wheel is required to be coaxially and fixedly arranged at one end of the screw rod, and if the thread rise angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, a braking device which is fixed on the base III and is used for braking the screw rod or the screw sleeve in a braking state; the screw thread lift angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure point is self-locked relative to the screw rod in the axial direction, a motion relation is formed among the base III, the screw rod, the screw sleeve and the screw sleeve revolving frame by 4 kinematic pairs, the first kinematic pair is connected between the base III and the screw rod, the second kinematic pair is connected between the screw rod and the screw sleeve, the third kinematic pair is connected between the screw sleeve and the screw sleeve revolving frame, and the fourth kinematic pair is connected between the screw rod and the screw sleeve revolving frame; the screw rod is installed on the base III through the revolute pair, the screw rod is installed through spiral cooperation with the swivel nut, the swivel nut retaining ring is fixed on the screw rod, the swivel nut revolving frame is installed on the screw rod through the revolute pair, the swivel nut revolving frame is connected with the swivel nut through the revolute pair again, torsion spring and the coaxial cooperation installation of screw rod, one end is fixed on the base III, the other end is fixed with the swivel nut revolving frame, spring plunger fixed mounting is on the base III, the pinch point connecting rod fixed mounting is on the swivel nut, the pinch point is the part of the independent spare part of fixed mounting on the pinch point connecting rod or the whole spare part that is integrally processed with the pinch point connecting rod.

Applying a torque opposite to the torque of the torsion spring on the screw (the torque is larger than the torque required by the release pressure point about the axial self-locking state of the screw or the braking state is released), taking a screw sleeve revolving frame at the balance position as a guide to ascend, integrating the screw sleeve and the screw when the screw sleeve retainer is contacted, enabling the screw sleeve to rotate forward to the proper position by the driving torque on the screw rod against the torque of the torsion spring, and restraining the rotation of the screw sleeve by the spring plunger to overcome the torque of the torsion spring and keep the position after stopping applying the driving torque to the screw rod; when reverse torque is applied to the screw rod, the screw sleeve axially descends for a small distance along the screw rod, the screw sleeve is separated from the rotation constraint of the spring plunger, the screw sleeve revolving frame and the screw sleeve reversely rotate to the balance position under the combined action of the same-direction torque of the screw rod and the torsion spring, and the screw sleeve descends by taking the screw sleeve revolving frame as a guide until a pressing point contacts a pressing object, and pressure is applied to the pressing object; when the torque is stopped, if the thread lead angle of the screw rod and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept, and if the thread lead angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is kept by using a brake device.

The invention relates to a mechanical device for realizing 'mechanical locking-rotation ascending-rotation descending-downward pressing under the state of releasing pressure point pressure and mechanical locking to keep the pressure point pressure state', which comprises a base IV, a worm wheel shaft, a pressure point connecting rod and a power machine, wherein the power machine is fixedly arranged on the base IV, the worm is driven by the power machine, and if a manual mode is needed, a manual wheel is required to be coaxially and fixedly arranged on the non-power machine end of the worm and the worm; the screw lift angle of the worm and the worm wheel is smaller than or equal to the equivalent friction angle, the base IV, the worm wheel and the worm wheel shaft form a movement relationship by two kinematic pairs, the first is a revolute pair connected between the base IV and the worm wheel shaft, and the second is a worm wheel pair connected between the worm and the worm wheel shaft; the worm wheel shaft is arranged on the base IV through the revolute pair, the worm and the worm wheel are arranged in a matched mode through the worm wheel pair, the worm wheel and the pressure point connecting rod are fixedly arranged on the worm wheel shaft, and the pressure point is an independent part fixedly arranged on the pressure point connecting rod or a part of an integral part integrally machined with the pressure point connecting rod.

Applying a forward torque larger than a torque required for releasing the self-locking state of the worm and the worm wheel on the worm, driving the worm wheel to rotate forward and driving the pressing point connecting rod and the pressing point to rotate and ascend, and when a reverse torque is applied, driving the worm wheel to rotate reversely and driving the pressing point connecting rod and the pressing point to rotate and descend until the pressing point contacts a pressing object, and applying pressure to the pressing object; since the lead angle of the worm and the worm wheel is equal to or smaller than the equivalent friction angle, the pressure of the pressing point on the pressing object is maintained after the torque applied to the worm is stopped.

Advantageous effects

The special functions of the mechanical device applied by the equipment can be realized without using the turntable and the brake device, so that the mechanical device and the equipment are simplified, the process of relieving pressure, avoiding, pressing down and maintaining the pressure of the pressure point is more rapid, the dynamic response performance of the pressure point is improved, the fault links caused by the turntable and the brake device can be eliminated, the reliability of the equipment is improved, the cost of the equipment is reduced, and the equipment is lighter; the mechanical device in the equipment can realize the corresponding mechanical device function according to the signals of the sensor or the image identifier so as to avoid the turned pages, and the pressing point of the mechanical device can still press the pages on the mechanical structure for placing books under the unpowered condition.

Drawings

FIG. 1 is a logic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 2 is a logical two schematic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 3 is a logical triple schematic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 4 is a logic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 5 is a logical five schematic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 6 is a logical six schematic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 7 is a logic seven schematic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention.

Fig. 8 is a schematic structural view of a mechanical device one having the functions of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing point pressing state" of the present invention;

fig. 9 is a schematic structural view of a mechanical device one having the functions of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing point pressing state" of the present invention;

FIG. 10 is a schematic structural view of a second mechanical device with the functions of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing-point pressing state" according to the present invention;

FIG. 11 is a schematic structural view of a second mechanical device with the functions of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing-point pressing state" according to the present invention;

Fig. 12 is a schematic structural view of a third mechanical device having a function of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing point pressing state" in the present invention;

fig. 13 is a schematic structural view of a third mechanical device having a function of "releasing the mechanical lock-linear up-forward rotation-reverse rotation-linear down-pressing and mechanical locking in the pressing point pressing state" in the present invention;

fig. 14 is a schematic structural view of a mechanical device four having a function of "releasing the mechanical lock-rotation up-rotation down-pressing in the pressing point pressing state and mechanically locking to maintain the pressing point pressing state" of the present invention;

fig. 15 is a schematic structural view of a mechanical device four having a function of "releasing the mechanical lock-rotation up-rotation down-pressing in the pressing point pressing state and mechanically locking to maintain the pressing point pressing state" of the present invention;

in the figure: 1-base one, 2-base two, 3-base three, 4-base four, 5-straight guide one, 6-straight guide two, 7-transition face, 8-spiral guide one, 9-spiral guide two, 10-screw, 11-screw, 12-screw guide table, 13-screw retainer, 14-screw turn rack, 15-torsion spring, 16-spring plunger, 17-worm, 18-worm wheel, 19-worm wheel shaft, 20-pressure point connecting rod, 21-pressure point, 22-power machine, 23-driving wheel, 24-transmission mechanism, 25-driven wheel, 26-first sensor, 27-second sensor, 28-third sensor, 29-fourth sensor, 30-first device, 31-second device, 32-third device, 33-fourth device, 34-bottom plate, 35-back plate, 36-book.

Detailed Description

First, some words, reference numerals, drawings, and some words in the embodiments used in the present application will be explained.

In the description and claims of the present application, the words "comprise," "include," "consist of," and the like are to be construed as inclusive rather than exclusive or exhaustive meaning, 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.

In the various drawings of the present application, identical elements are provided 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 1 is provided with a first straight guide surface 5, a second straight guide surface 6, a first rotary guide surface 8 and a second rotary guide surface 9, wherein the first straight guide surface 5 is intersected with the second rotary guide surface 9, and the second straight guide surface 6 is intersected with the first rotary guide surface 8; track groove II: the base II 2 consists of a first straight guide surface 5, a second straight guide surface 6, a transition surface 7 and a second rotating guide surface 9, wherein the first straight guide surface 5 and the second rotating guide surface 9 are intersected and transited; the first straight guide surface 5 and the second straight guide surface 6 in the first track groove and the second track groove are respectively parallel to the axis of the screw 10 or comprise the axis of the screw 10 after being extended; the screw sleeve 11 is provided with a screw sleeve guide table 12, the screw sleeve guide table 12 is an independent part fixedly connected with the screw sleeve 11 or is generated on the characteristics of the screw sleeve 11, and a sliding or rolling friction pair can be used between the screw sleeve guide table 12 and the first track groove or the second track groove.

The pressure points 21 are independent components fixedly mounted on the pressure point connecting rod 20.

The lead angle of the screw 10 and the screw sleeve 11 in examples 1 to 4 is equal to or less than the integrated self-locking angle and is larger than the equivalent friction angle.

Since the operation principle of the mechanical device applied to the apparatus in the manual mode is completely identical to that in the semiautomatic mode and a specific mechanical device trigger logic and a pressure point action sequence are not required, the manual mode is not described in examples 1 to 5.

The following describes in detail the operation sequence of the pressing point of the four mechanical devices with functions of "mechanical locking in the state of releasing the pressing point to press-up-forward rotation-reverse rotation-linear lowering-pressing and mechanical locking to maintain the pressing point to press state" or "mechanical locking in the state of releasing the pressing point to press-up-rotation-rotational lowering-pressing and mechanical locking to maintain the pressing point to press state", and one trigger logic and mechanical device for realizing the page pressing and the barrier-free page turning "according to the present invention, with reference to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and the corresponding embodiments.

Example 1

As shown in fig. 2, which is an apparatus for realizing page pressing and barrier-free page turning of the present invention, 4 mechanical devices having functions of "mechanical locking in a state of releasing a pressing point pressing-linear rising-forward rotation-reverse rotation-linear falling-pressing down and mechanical locking to maintain the pressing point pressing state" are applied; the first device 30, the second device 31, the third device 32 and the fourth device 33 are fixedly arranged on the bottom plate 34, and the book 36 is placed on the bottom plate 34 and the back plate 35; the first sensor 26, the second sensor 27, the third sensor 28 and the fourth sensor 29 are all arranged at positions which can be effectively triggered by the page turner, and a driver and a controller (not shown in the figure) are respectively connected with power machines and sensors on the four devices; the four devices normally hold the book 36 down.

As shown in fig. 1, the first device 30 is identical to the second device 31, and the third device 32 is identical to the fourth device 33; the rotation directions of the first device 30 and the second device 31 are opposite to those of the third device 32 and the fourth device 33; the pressure point 21 of the first device 30 is called a first pressure point, the pressure point 21 of the second device 31 is called a second pressure point, the pressure point 21 of the third device 32 is called a third pressure point, the pressure point 21 of the fourth device 33 is called a fourth pressure point, and the total is four pressure points; a trigger logic and sequence of pressure point actions for the page pressing and barrier-free page turning apparatus is described in detail below.

As shown in fig. 1, the four pressing points of the apparatus of the present invention all rise to the top and are rotated 90 deg. in a set rotational direction to facilitate placement of a book 36 that has been opened to the desired page for reading.

As shown in fig. 2, after the book 36 is placed on the back plate 35, the four pressing points are pressed down on the pages of the book 36 to press the pages onto the back plate 35, and at this time, the four devices are ready to cooperate with the page turning action of the page turning hand.

As shown in FIG. 3, the person is facing the book, and when the hand turns pages from right to left, the page turning hand triggers a first signal state of the first sensor 26, a first pressing action on the first device 30, rises to the top and rotates 90, and no more pages are pressed, so that the page turning action is continued.

The second signal state of sensor 26 is then triggered by the page-turning hand during the continued page turning, and the first press on device 30 is turned 90 and lowered onto book 36 to apply pressure to the pages, changing to the state shown in fig. 2. After the first pressing point action is completed, the second pressing point action on the second device 31 rises to the top and rotates by 90 degrees, as shown in fig. 4; after the second pressing action is completed, the third pressing action on the third device 32 rises to the top and rotates by 90 degrees, and as shown in fig. 5, the second pressing action and the third pressing action do not press pages any more, so that the page turning hands and pages of the book are turned over without barriers.

The first signal state of the third sensor 28 is then triggered by the page turning hand during the continued page turning process, the second pressing point on the second device 31 is turned 90 ° down to the book 36 to apply pressure to the pages, as shown in fig. 6, when the page turning hand is at the center line of the book 36.

In the continued page turning process, the page turning hand has reached the right side of the fourth device 33, and the page turning hand triggers the first signal state of the fourth sensor 29, the third pressing point on the third device 32 acts, and the page turning hand turns 90 degrees to drop to the book 36 to apply pressure to the pages, so that the state shown in fig. 2 is changed. After the third pressing operation is completed, the fourth pressing operation on the fourth device 33 is lifted to the top and rotated by 90 °, and the page is not pressed any more, so that the page turning operation is continued, as shown in fig. 7.

In the continuous page turning process, the page turning hand reaches the left side of the fourth device 33, the page turning hand triggers the second signal state of the fourth sensor 29, the fourth pressing point on the fourth device 33 acts, the page turning hand rotates 90 degrees to drop to the book 36 to apply pressure to the pages, the state shown in fig. 2 is changed, and the page turning process is completed.

This uses a sensor 26, a sensor 28 and a sensor 29 in the right-to-left page turning process.

When turning pages from left to right, the action logic of the four mechanical devices is similar to that of turning pages from right to left, and a fourth sensor 29, a second sensor 27 and a first sensor 26 are used in the process of turning pages.

The mechanical devices of the page pressing and barrier-free page turning equipment perform corresponding lifting and rotating actions along with the actions of the page turning hands so as to avoid the pages turned by the book 36, enable the page turning actions to be smooth and uninterrupted, enable the pages on any side of the left and right opened pages to be pressed on the back plate 35 by the pressing point 21 of at least one mechanical device at any time in the page turning process, and enable the book 36 and the pages thereof to be kept stable during page turning and non-page turning.

Example 2

As shown in fig. 8 and 9, the mechanical device 1 for realizing "mechanical locking in the state of releasing the pressure point to apply pressure-linear rising-forward rotation-reverse rotation-linear lowering-pressing and mechanical locking to maintain the state of applying pressure point" according to the present invention includes a base 1, a screw 10, a screw sleeve 11, a screw sleeve guide table 12, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, the power machine 22 is fixedly mounted on the base 1, the driving wheel 23 is fixedly mounted on the power machine 22, the driven wheel 25 is fixedly mounted on the screw 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; wherein, the screw rod 10 and the screw sleeve 11 have the thread lead angle smaller than or equal to the comprehensive self-locking angle, and the pressure point 21 is axially self-locked relative to the screw rod 10; the base I1, the screw rod 10, the screw sleeve 11 and the screw sleeve guide table 12 form a motion relation by three kinematic pairs, wherein the first kinematic pair is a revolute pair connected between the base I1 and the screw rod 10, the second kinematic pair is a screw pair connected between the screw rod 10 and the screw sleeve 11, and the third kinematic pair is a friction pair connected between the base I1 and the screw sleeve guide table 12; the screw rod 10 is arranged on the first base 1 through a revolute pair, the screw rod 10 and the screw sleeve 11 are arranged in a screw fit mode, the screw sleeve guide table 12 is contacted with one side of the track groove I of the first base 1 through a friction pair, and the pressure point connecting rod 20 is fixedly arranged on the screw sleeve 11.

The positive torque larger than the torque required by the release pressure point 21 about the axial self-locking state of the screw 10 is applied to the screw 10, the screw 10 pushes the screw sleeve 11 to ascend along the straight guide surface one 5 of the track groove one, when the screw sleeve is ascended to the top end of the straight guide surface one 5, the screw sleeve guide table 12 is contacted with the screw guide surface one 8, the rotation component force of the screw 10 on the screw sleeve 11, which is generated by the screw 10, and the rotation component force of the screw 10 on the screw sleeve 11, which is generated by the screw 8 on the screw sleeve 11, are in the same direction as the rotation component force of the screw 10 on the screw 10, which is generated by the screw 10 on the screw sleeve 11, overcomes the axial component force of the screw 10 on the screw sleeve 11, and the axial force of the screw sleeve 11 is formed, and under the combined action of the rotation force and the axial force, the screw sleeve 11 is positively rotated and ascended along the screw guide surface one 8 until the screw sleeve guide table 12 reaches the upper end of the screw guide surface two 9 to stop.

When reverse torque is applied to the screw 10, the movement principle is the same as that of forward torque, the screw 10 pushes the screw sleeve 11 to rotate reversely and descend along the second rotating guide surface 9, and after the screw sleeve is separated from the second rotating guide surface 9 and contacts the second straight guide surface 6, the screw sleeve descends along the second straight guide surface 6 until the pressing point 21 contacts the book 36, and pressure is applied to the book 36; because the thread lead angle of the screw 10 and the screw sleeve 11 is smaller than or equal to the comprehensive self-locking angle, after the torque applied to the screw 10 is stopped, the pressure of the pressure point 21 on the book 36 is maintained.

Example 3

As shown in fig. 10 and 11, the mechanical device two for realizing "mechanical locking in the state of releasing the pressure point pressure-linear rising-forward rotation-reverse rotation-linear falling-pressing and mechanical locking to keep the pressure point pressure state" of the present invention includes a base two 2, a screw 10, a screw sleeve 11, a screw sleeve guide table 12, a screw sleeve retainer ring 13, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, wherein the power machine 22 is fixedly installed on the base two 2, the driving wheel 23 is fixedly installed on the power machine 22, the driven wheel 25 is fixedly installed on the screw 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; wherein, the screw rod 10 and the screw sleeve 11 have the thread lead angle smaller than or equal to the comprehensive self-locking angle, and the pressure point 21 is axially self-locked relative to the screw rod 10; the base II 2, the screw rod 10, the screw sleeve 11 and the screw sleeve guide table 12 form a motion relation by three kinematic pairs, wherein the first kinematic pair is a revolute pair connected between the base II 2 and the screw rod 10, the second kinematic pair is a screw pair connected between the screw rod 10 and the screw sleeve 11, and the third kinematic pair is a friction pair connected between the base II 2 and the screw sleeve guide table 12; the screw rod 10 is arranged on the second base 2 through a revolute pair, the screw rod 10 and the screw sleeve 11 are arranged in a screw fit mode, the screw sleeve guide table 12 is contacted with one side of the second track groove of the second base 2 through a friction pair, the screw sleeve check ring 13 is fixed on the screw rod 10, and the pressure point connecting rod 20 is fixedly arranged on the screw sleeve 11.

The screw 10 applies a forward torque larger than the torque required by the release pressure point 21 in the axial self-locking state of the screw 10, the screw 10 pushes the screw sleeve 11 to ascend along the straight guide surface one 5 of the track groove two, the restraint is released when the screw sleeve 11 ascends to the top end of the straight guide surface one 5, the screw sleeve 11 simultaneously rotates forward and ascends, the length of the spiral guide surface two 9 in the axial direction of the screw 10 is determined according to parameters such as a thread lifting angle, the total mass and the comprehensive rotational inertia of the screw sleeve 11 and a part fixedly connected with the screw sleeve 11 and the like, so that the rotation speed of the screw sleeve 11 in the reverse rotation descending process is increased by the spiral guide surface two 9, the screw sleeve 11 is required to contact the screw sleeve retainer 13 and be integrated with the screw 10 before the screw sleeve guide table 12 reaches the spiral guide surface two 9, and the screw sleeve 11 and the screw 10 rotate forward under the action of the torque transmitted to the screw 10 and the comprehensive rotational kinetic energy equivalent on the screw 10 until the screw guide table 12 reaches the upper end of the screw guide surface two 9 and stops.

When a reverse torque is applied to the screw rod 10, a rotation component force, which is generated by the screw rod 10 on the screw sleeve 11 and is generated by the second screw guide surface 9 on the screw sleeve 11, is in the same direction as a rotation component force, which is generated by the screw rod 10 on the screw sleeve 11 and is generated by the screw sleeve 11, around the screw rod 10, so that a rotation force of the screw sleeve 11 is formed, and an axial force of the screw sleeve 11 is formed by the axial component force of the screw rod 10, which is generated by the screw sleeve 11 on the screw sleeve 11, against the second screw guide surface 9, under the combined action of the rotation force and the axial force, the screw sleeve 11 reversely rotates and descends along the second screw guide surface 9; when the second guide surface 9 is separated from the first guide surface 6 and contacts the second guide surface 6, the second guide surface 6 is lowered until the pressing point 21 contacts the book 36, and pressure is applied to the book 36; because the thread lead angle of the screw 10 and the screw sleeve 11 is smaller than or equal to the comprehensive self-locking angle, after the torque applied to the screw 10 is stopped, the pressure of the pressure point 21 on the book 36 is maintained.

Example 4

As shown in fig. 12 and 13, the mechanical device three of the present invention for realizing "mechanical locking in the state of releasing the pressure point from the pressure point-up-forward rotation-reverse rotation-linear lowering-pressing and mechanical locking to maintain the state of the pressure point-up" includes a base three 3, a screw 10, a screw sleeve 11, a screw sleeve retainer ring 13, a screw sleeve turret 14, a torsion spring 15, a spring plunger 16, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, the power machine 22 is fixed on the base three 3, the driving wheel 23 is fixedly mounted on the power machine 22, the driven wheel 25 is fixedly mounted on the screw 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; wherein, the screw rod 10 and the screw sleeve 11 have the thread lead angle smaller than or equal to the comprehensive self-locking angle, and the pressure point 21 is axially self-locked relative to the screw rod 10; the base III 3, the screw rod 10, the screw sleeve 11 and the screw sleeve revolving frame 14 form a movement relation by four kinematic pairs, wherein the first kinematic pair is connected between the base III 3 and the screw rod 10, the second kinematic pair is connected between the screw rod 10 and the screw sleeve 11, the third kinematic pair is connected between the screw sleeve 11 and the screw sleeve revolving frame 14, and the fourth kinematic pair is connected between the screw rod 10 and the screw sleeve revolving frame 14; the screw rod 10 is installed on the base III 3 through the revolute pair, the screw rod 10 is installed through spiral cooperation with the swivel nut 11, the swivel nut retainer ring 13 is fixed on the screw rod 10, the swivel nut revolving frame 14 is installed on the screw rod 10 through the revolute pair, the swivel nut revolving frame 14 is connected with the swivel nut 11 through the revolute pair again, the torsion spring 15 is installed through coaxial cooperation with the screw rod 10, one end is fixed on the base III 3, the other end is fixed with the swivel nut revolving frame 14, the swivel nut revolving frame 14 and the swivel nut 11 are in balanced position under the normal state, the spring plunger 16 is fixedly installed on the base III 3, and the pressure point connecting rod 20 is fixedly installed on the swivel nut 11.

The screw rod 10 is applied with a torque which is larger than the torque required by the release pressure point 21 about the axial self-locking state of the screw rod 10 and is opposite to the torque of the torsion spring 15, the screw sleeve 11 is lifted by taking the screw sleeve rotary frame 14 at the balance position as a guide, when the screw sleeve retainer 13 is contacted, the screw sleeve 11 and the screw rod 10 are integrated, the screw sleeve 11 is rotated forward to be in place by the driving torque on the screw rod 10 against the torque generated by the torsion spring 15, at the moment, the spring plunger 16 restrains the rotation of the screw sleeve 11, and the screw sleeve 11 is kept at the position under the condition that the driving torque is stopped to be applied to the screw rod 10 and the reverse torque is generated to the screw sleeve 11 by the torsion spring 15.

When reverse torque is applied to the screw 10, as the rotation of the screw sleeve 11 is restrained by the spring plunger 16, the screw sleeve 11 descends for a small distance along the axial direction of the screw 10, the screw sleeve 11 is separated from the rotation motion restraint of the spring plunger 16, the screw sleeve revolving frame 14 and the screw sleeve 11 reversely rotate to the balance position under the combined action of the same-direction torque of the screw 10 and the torsion spring 15, the screw sleeve 11 descends by taking the screw sleeve revolving frame 14 as a guide until the pressing point 21 contacts the book 36, and pressure is applied to the book 36; because the thread lead angle of the screw 10 and the screw sleeve 11 is smaller than or equal to the comprehensive self-locking angle, after the torque applied to the screw 10 is stopped, the pressure of the pressure point 21 on the book 36 is maintained.

Example 5

As shown in fig. 14 and 15, the mechanical device for realizing "mechanical locking in the state of releasing the pressure point from the pressure-applying state-rotational ascending-rotational descending-pressing down and mechanical locking to maintain the pressure point from the pressure-applying state" of the present invention includes a base four 4, a worm 17, a worm wheel 18, a worm wheel shaft 19, a pressure point connecting rod 20, a pressure point 21 and a power machine 22, the power machine 22 is fixedly installed with the base four 4, and the worm 17 is driven by the power machine 22; the screw lift angle of the worm 17 and the worm wheel 18 is smaller than or equal to the equivalent friction angle, the base IV 4, the worm 17, the worm wheel 18 and the worm wheel shaft 19 form a movement relationship by two kinematic pairs, the first is a revolute pair connected between the base IV 4 and the worm wheel shaft 19, and the second is a worm wheel pair connected between the worm 17 and the worm wheel 18; the worm wheel shaft 19 is arranged on the base four 4 through a revolute pair, the worm 17 and the worm wheel 18 are arranged in a matched mode through a worm wheel pair, and the worm wheel 18 and the pressure point connecting rod 20 are fixedly arranged on the worm wheel shaft 19.

When a positive torque larger than the torque required for releasing the self-locking state of the worm 17 and the worm wheel 18 is applied to the worm 17, the worm 17 drives the worm wheel 18 to rotate positively and drives the pressure point connecting rod 20 and the pressure point 21 to rotate and rise; when reverse torque is applied to the worm 17, the worm 17 drives the worm wheel 18 to reversely rotate and drives the pressing point connecting rod 20 and the pressing point 21 to rotationally descend, and until the pressing point 21 contacts the book 36, pressure is applied to the book 36; since the lead angle of the worm 17 and the worm wheel 18 is equal to or smaller than the equivalent friction angle, the pressure of the pressing point 21 to the book 36 is maintained after the torque applied to the worm 17 is stopped.

Industrial applicability

The invention discloses a mechanical device for realizing 'mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing and mechanical locking under the pressing point pressing state' and a mechanical device for realizing 'mechanical locking-rotational rising-rotational descending-downward pressing and mechanical locking under the pressing point pressing state' and mechanical locking under the pressing point pressing state, as well as page pressing and barrier-free page turning equipment applying specific mechanical devices in the two kinds of mechanical devices, which are characterized in that: (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 device only needs one power machine, so that the driving and controlling objects are fewer, and the requirements on a driver and a controller 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 and the like, and lubrication measures are not needed; (6) high reliability and low manufacturing and operating costs; (7) The page pressing and barrier-free page turning equipment enables people to completely liberate both hands in other time except that one hand is used for completing one page turning action in the page turning process when reading paper books.

Claims

1. The equipment for realizing page pressing and barrier-free page turning by using a mechanical device is characterized in that the mechanical device applied by the equipment is provided with a function of releasing mechanical locking-linear rising-forward rotation-reverse rotation-linear descending-downward pressing and mechanical locking under the pressing point pressing state or a function of releasing mechanical locking-rotational rising-rotational descending-downward pressing and mechanical locking under the pressing point pressing state to maintain the pressing point pressing state, and the mechanical device applied by the equipment is fixedly arranged on a mechanical structure for placing books, so that at least one mechanical device applied by the equipment is respectively fixed beside pages on the left side and the right side of the books; under a semi-automatic mode, a mechanical device applied by the equipment is controlled by a control device formed by a sensor or an image identifier, a driver and a controller, under a reading state, pages are pressed on a mechanical structure for placing books by the mechanical device applied by the equipment, and under a page turning state, the mechanical device applied by the equipment avoids the turned pages or presses down the pressed pages according to limb signals of a person detected by the sensor or limb signals of the person identified by the image identifier; the mechanical device applied by the equipment does not have a brake device and needs a manual mode, and the mechanical device applied by the equipment needs to be added with a manual wheel and can avoid pages or press the pages by rotating the manual wheel in the forward direction and the reverse direction.

2. The device according to claim 1, wherein the mechanical device comprises a first base, a screw sleeve guide table, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the first base, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw, and the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread rise angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle and a manual mode is required, a manual wheel is required to be coaxially and fixedly arranged at one end of the screw, and if the thread rise angle of the screw and the screw sleeve is larger than the comprehensive self-locking angle, a brake device which is fixed on the first base and used for braking the screw or the screw sleeve in a braking state is required to be additionally arranged; the screw is characterized in that when the lead angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure point is self-locked relative to the axial direction of the screw, and a group of guide surfaces are arranged on a first base: the screw rod is arranged on the base one through the revolute pair, the screw rod and the screw sleeve are arranged on the screw sleeve through the spiral fit, the screw sleeve guide table is an independent part fixedly connected with the screw sleeve or is characterized by a screw sleeve, a movement relation is formed among the base one, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide table by three kinematic pairs, the first is a revolute pair connected between the base one and the screw rod, the second is a revolute pair connected between the screw rod and the screw sleeve, the third is a friction pair connected between the guide surface and the screw sleeve guide table, the screw rod is arranged on the base one through the revolute pair, the screw rod and the screw sleeve are arranged on the screw sleeve through the screw pair, the screw rod and the screw sleeve are arranged on the screw sleeve guide table through the spiral fit, and the screw sleeve guide table is arranged on the connecting rod and the connecting rod is integrally pressed at the same point as the connecting rod through the guide table, and the connecting rod is arranged on the connecting rod and the connecting rod is integrally pressed at the connecting rod.

3. The device according to claim 1, wherein the mechanical device comprises a second base, a screw retainer ring, a screw sleeve guide table, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the second base, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw, the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread lift angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle and a manual mode is required, the manual wheel is coaxially and fixedly arranged at one end of the screw, and if the thread lift angle of the screw and the screw sleeve is larger than the comprehensive self-locking angle, a braking device which is fixed on the second base and used for braking the screw or the screw sleeve in a braking state is added; the screw is characterized in that when the lead angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure point is self-locked relative to the axial direction of the screw, and a group of guide surfaces are arranged on the second base: the screw guide table is an independent part fixedly connected with the screw sleeve or is characterized in that the screw guide table is a screw sleeve feature generated on the screw sleeve, the base II, the guide surface, the screw sleeve and the screw sleeve guide table form a motion relation by three kinematic pairs, the first is a revolute pair connected between the base II and the screw, the second is a screw pair connected between the guide surface and the screw sleeve guide table, the screw is arranged on the base II through the revolute pair, the screw and the screw sleeve are arranged through the screw pair, the screw guide table is an independent part fixedly connected with the screw sleeve or is a screw sleeve feature generated on the screw sleeve, the base II, the guide surface, the screw sleeve and the screw sleeve guide table form a motion relation by three kinematic pairs, the first is a revolute pair connected between the base II and the screw, the second is a screw pair connected between the guide surface and the screw sleeve guide table, the screw is arranged on the base II through the revolute pair, the screw and the screw sleeve is arranged on the screw sleeve guide table through the revolute pair, the screw and the screw sleeve is fixedly pressed on the screw sleeve through the friction pair guide table, the screw guide table is fixedly pressed on the connecting rod with the connecting rod or is integrally pressed on the connecting rod, the connecting rod is fixedly pressed on the connecting rod, and is integrally pressed on the connecting rod, and is fixedly pressed on the connecting rod.

4. The device according to claim 1, wherein the mechanical device comprises a base three, a screw sleeve retainer ring, a screw sleeve revolving frame, a screw sleeve, a torsion spring, a spring plunger, a pressing point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base three, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw, the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread lift angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle and a manual mode is required, the manual wheel is required to be coaxially and fixedly arranged at one end of the screw, and if the thread lift angle of the screw and the screw sleeve is larger than the comprehensive self-locking angle, a brake device which is fixed on the base three and used for braking the screw or the screw sleeve in a braking state is required; the screw is characterized in that when the thread lift angle of the screw and the screw sleeve is smaller than or equal to the comprehensive self-locking angle, the pressure point is axially self-locked relative to the screw, a movement relation is formed among a base III, the screw sleeve and the screw sleeve revolving frame by 4 kinematic pairs, the first is a revolute pair connected between the base III and the screw, the second is a screw pair connected between the screw and the screw sleeve, the third is a movable pair connected between the screw sleeve and the screw sleeve revolving frame, the fourth is a revolute pair connected between the screw and the screw sleeve revolving frame, the screw is installed on the base III through the revolute pair, the screw sleeve retainer ring is fixed on the screw, the screw sleeve revolving frame is installed on the screw through the revolute pair, the screw sleeve revolving frame is connected with the screw sleeve through the movable pair, the torsion spring is coaxially matched with the screw rod, one end is fixed on the base III, the other end is fixed with the screw sleeve revolving frame, the spring plunger is fixedly installed on the base III, the pressure point connecting rod is fixedly installed on the screw sleeve, and the pressure point is an independent part fixedly installed on the pressure point connecting rod or a part of the integral part of the pressure point connecting rod is machined.

5. The device according to claim 1, wherein the mechanical device comprises a base four, a worm wheel shaft, a pressing point connecting rod and a power machine, wherein the power machine is fixedly arranged on the base four, the worm is driven by the power machine, and if a manual mode is needed, a manual wheel is fixedly arranged on the non-power machine end of the worm and the worm coaxially; the novel worm and worm wheel type pressure point connecting rod is characterized in that the thread rise angle of the worm and the worm wheel is smaller than or equal to an equivalent friction angle, a motion relation is formed among a base IV, the worm wheel and a worm wheel shaft by two kinematic pairs, the first kinematic pair is connected between the base IV and the worm wheel shaft, the second kinematic pair is connected between the worm and the worm wheel, the worm wheel shaft is arranged on the base IV through the kinematic pair, the worm and the worm wheel are arranged in a matched mode through the worm pair, the worm wheel and the pressure point connecting rod are fixedly arranged on the worm wheel shaft, and the pressure point is an independent part fixedly arranged on the pressure point connecting rod or a part of an integral part integrally machined with the pressure point connecting rod.