CN107450655B

CN107450655B - Mechanical limiting device and mechanical limiting method

Info

Publication number: CN107450655B
Application number: CN201610367828.XA
Authority: CN
Inventors: 包卫明; 郭新明; 杨科亚
Original assignee: Shanghai Sipoo New Technology Co ltd
Current assignee: Shanghai Sipoo New Technology Co ltd
Priority date: 2016-05-30
Filing date: 2016-05-30
Publication date: 2024-04-05
Anticipated expiration: 2036-05-30
Also published as: CN107450655A; WO2017206766A1

Abstract

The invention discloses a mechanical limiting device and a mechanical limiting method, wherein a slipping mechanism with controllable slipping direction is arranged between an input shaft and a transmission mechanism, and an additionally arranged triggering mechanism triggers the slipping mechanism to slip in different directions and is in action association with an output shaft, so that after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating. The mechanical limiting device adopts the concept that the triggering mechanism is arranged in an associated way with the output shaft, effectively utilizes the rotation of the output shaft to drive the triggering mechanism to trigger the slipping mechanism to realize limiting, and does not rotate even if the input shaft continues to input along the same steering during slipping, thereby realizing fuzzy input and quantitative output.

Description

Mechanical limiting device mechanical limiting method

Technical Field

The invention relates to the field of mechanical structure design, in particular to a mechanical limiting device and a mechanical limiting method.

Background

Through the search, it is found that, the conventional limiting device adopts the following schemes:

the Chinese patent with publication number of CN203580369U discloses a limiting device for the cantilever movement stroke of an automatic stamping machine, which comprises a motor arranged on a mechanical platform in a shell, wherein two ends of an output shaft of the motor are fixed on the platform through bearings, a gear is sleeved on the output shaft and meshed with a rack, the rotation of the gear drives the rack to vertically move up and down, a coding disc is arranged at the top end of the output shaft and rotates along with the output shaft, the coded disc is inserted into the clamping groove of the groove type photoelectric sensor fixed on the platform, when the top end of the rack moves to the bottom of the stroke along with the gear, the groove type photoelectric sensor triggers the groove type photoelectric sensor to send a signal to stop the rotation of the motor and start to move reversely through the information of the coded disc collected by the clamping groove, so that the automatic control of the cantilever movement stroke of the automatic stamping machine is realized, and the precision is improved.

The Chinese patent with publication number CN201857848U discloses a limit device of a door opener, which mainly comprises an input gear and a screw rod, wherein the input gear is connected with the screw rod and then is arranged on a base, an impact block is arranged on the screw rod, the impact block is matched with the screw rod through threads, the lower end of the impact block is arranged in a middle guide groove of the base, two micro switches are respectively arranged on two sides of the screw rod, the micro switches are arranged on sliding blocks, screw holes are formed in the sliding blocks, an adjusting screw is respectively arranged on two sides of the screw rod, the sliding blocks are matched with the adjusting screw through the screw holes, and the lower ends of the sliding blocks are arranged in the guide grooves on two sides of the base. The device adopts the adjustment micro-gap switch to adapt to the needs of different door bodies, realizes spacing function.

Chinese patent publication No. CN102865563B discloses a rotation limiting device and a lamp; the rotation limiting device comprises a base, a rotating shaft assembly and a driving piece arranged on the base; the driving shaft of the driving piece is connected with the rotating shaft assembly; the rotating shaft assembly is driven by the driving piece to synchronously rotate with the driving shaft of the driving piece; the rotation limiting device further comprises a rotary drum and a micro switch which are arranged on the base; a limit deflector rod is arranged on the rotary drum; the rotating shaft assembly is provided with a limiting piece, and the limiting piece drives the rotary drum to rotate so as to drive the limiting deflector rod to rotate around the rotary drum; the micro switch is electrically connected with the driving piece; the limit deflector rod can stir the micro switch to be opened and closed when rotating, so as to control the driving shaft of the driving piece to rotate clockwise or anticlockwise. The structure effectively plays a role in limiting the rotation of the rotating shaft assembly to more than 360 degrees.

By reading the prior art including the previously disclosed patent, it is found that most of the current limiting devices control the input quantity of the input end by means of sensors (such as a coding disc, a photoelectric switch and a micro switch) so as to realize limiting, or directly control the input quantity by a program, and require that the input quantity is strictly related to the output quantity so as to realize the purpose of limiting.

The applicant found that the existing limit device is difficult to realize fuzzy input and quantitative output, and needs to continuously provide power supply to realize limit triggering.

Disclosure of Invention

The invention aims to provide a mechanical limiting device and a mechanical limiting method, which can realize limiting triggering, fuzzy input and quantitative output without power supply.

The invention provides a mechanical limiting device for solving the technical problems, which comprises an input shaft, an output shaft and a transmission mechanism, wherein the input shaft is connected with the output shaft through the transmission mechanism.

The mechanical limiting device further comprises a slipping mechanism with a controllable slipping direction and a triggering mechanism used for triggering the slipping mechanism to slip in different directions, the slipping mechanism is arranged between the input shaft and the transmission mechanism, the triggering mechanism is arranged in association with the output shaft, and after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, so that slipping occurs between the input shaft and the transmission mechanism.

The mechanical limiting device is of a pure mechanical structure design, and electronic components such as a sensor are not required, so that power supply is not required, the mechanical limiting device adopts the concept that a trigger mechanism is arranged in association with an output shaft, and effectively utilizes the rotation of the output shaft to drive the trigger mechanism to trigger a slipping mechanism to realize limiting, and the output shaft does not rotate any more even if the input shaft continues to input along the same steering during slipping, so that fuzzy input and quantitative output are realized.

Preferably, the sliding mechanism comprises a sliding sleeve, a clamping ring, an elastic inserting key and a triggering ejector block, wherein an installation seat is formed in a radial bulge of the middle section of the input shaft, an installation slot is formed in the installation seat along the axial direction of the input shaft, the elastic inserting key is inserted into the installation slot, two end parts of the elastic inserting key can stretch out and draw back along the axial direction, the sliding sleeve is slidably sleeved on the installation seat, the two clamping rings are fixedly butted at two end parts of the sliding sleeve, the two triggering ejector blocks are slidably sleeved on the input shaft, the outer diameter of the inner end surface of the triggering ejector block facing the installation seat is smaller than or equal to the inner diameter of the clamping ring, the inner diameter of the clamping ring is smaller than the inner diameter of the sliding sleeve, one triggering ejector block is correspondingly and slidably inserted into an annular gap between the clamping ring and the input shaft, and a bayonet for unidirectionally clamping the elastic inserting key is formed at one side of each clamping ring, adjacent to the installation seat. The trigger mechanism is provided with a connecting end used for being connected with the output shaft in an associated mode and a trigger end used for enabling the trigger jacking block to push the elastic plug key to move relative to the clamping ring, and the input shaft is connected with the transmission mechanism through the sliding sleeve.

The invention further provides a novel slipping mechanism, which adopts a combined clamping ring at two ends of a sliding sleeve, is implemented by matching with an elastic inserting key arranged on an input shaft mounting seat in a mode of sliding and inserting a trigger ejecting block in an annular gap between the clamping ring and the input shaft, and realizes unidirectional slipping limitation by pushing and controlling whether two extending end parts of the elastic inserting key extend into bayonets on the clamping rings at two sides through the trigger ejecting block. When the preset output quantity is reached, the output shaft associated triggering mechanism directly or indirectly pushes the triggering ejector block to axially slide along the input shaft, so that one end part of the elastic plug-in key is separated from the bayonet of the clamping ring to realize the sliding in the first rotation direction, at the moment, even if the input shaft exceeds the preset input quantity and continuously inputs the same rotation direction, the output shaft does not output any more until the input shaft reversely inputs, the sliding limitation is released, the elastic plug-in key is clamped and fixed on the bayonet of the corresponding clamping ring to drive the transmission mechanism to rotate, and then the output shaft is driven to output until the preset output quantity is completed.

Preferably, the mounting seat is a cylindrical mounting seat, the mounting slot is a strip-shaped groove which is communicated with the axis of the peripheral side face of the mounting seat, the elastic inserting key comprises a first inserting key, a middle pressure spring and a second inserting key, the first inserting key and the second inserting key are in butt joint through the middle pressure spring, the elastic inserting key is embedded in the mounting slot, and under the action of the middle pressure spring, the first inserting key is far away from one end part of the middle pressure spring and one end part of the second inserting key, far away from the middle pressure spring, extends out of the mounting slot and is in butt joint with the clamping ring.

Preferably, the end surfaces of the two end parts of the elastic plug key are inclined surfaces, the bayonet is a right triangle groove formed on one side surface of the clamping ring adjacent to the sliding sleeve, the bottom surface of the bayonet is a bevel edge surface, the end parts of the elastic plug key are inserted into the bayonet of the clamping ring, and the inclined surfaces of the elastic plug key are attached to the bevel edge surface of the bayonet; the elastic inserting key rotates towards one side of the inclined plane, the elastic inserting key receives axial thrust, the end part of the elastic inserting key retracts into the mounting slot, and the slipping mechanism and the input shaft slip; the elastic inserting key rotates towards one side deviating from the inclined plane, so that the elastic inserting key keeps an extending state, generates circumferential thrust to the bayonet, drives the clamping ring to rotate, and then enables the slipping mechanism and the transmission mechanism to rotate along with the input shaft.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a worm and gear structure, a cylindrical gear transmission structure, a bevel gear transmission mechanism, a synchronous belt transmission structure or a chain transmission structure.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a worm and gear structure, the triggering mechanism comprises a forward triggering mechanism and a reverse triggering mechanism, the forward triggering mechanism comprises a first auxiliary rotating shaft, a first auxiliary driving gear, a first auxiliary driven gear, a first screw sleeve, a first sliding block, a first guide rail and a first rotary triggering piece, and the reverse triggering mechanism comprises a second auxiliary rotating shaft, a second auxiliary driving gear, a second auxiliary driven gear, a second screw sleeve, a second sliding block, a second guide rail and a second rotary triggering piece.

The first auxiliary rotating shaft is arranged on one side of the output shaft side by side, the first auxiliary rotating shaft is parallel to the output shaft, the first auxiliary driving gear is fixed on the output shaft, the first auxiliary driven gear is fixed on the first auxiliary rotating shaft, the first auxiliary driving gear is meshed with the first auxiliary driven gear, the first auxiliary rotating shaft is provided with a first threaded section for driving the first threaded sleeve, the first threaded sleeve is screwed on the first threaded section, the fixed end of the first sliding block is fixed on the first threaded sleeve, the setting direction of the first guide rail is the same as the axial direction of the first auxiliary rotating shaft, the sliding end of the first sliding block is arranged in the first guide rail in a penetrating mode, the first rotary triggering piece is arranged on one side of the first guide rail, the first rotary triggering piece is provided with a first end for pushing the first sliding block and a second end for pushing the triggering top block, and the first threaded sleeve drives the first sliding block to move in the first guide rail, and then the first rotary triggering piece is pushed by the first rotary triggering piece through the first pushing end of the first rotary triggering piece.

The second auxiliary rotating shaft is arranged on the other side of the output shaft side by side, the second auxiliary rotating shaft is parallel to the output shaft, the second auxiliary driving gear is fixed on the output shaft, the second auxiliary driven gear is fixed on the second auxiliary rotating shaft, the second auxiliary driving gear is meshed with the second auxiliary driven gear, the second auxiliary rotating shaft is provided with a second threaded section for driving a second screw sleeve, the second screw sleeve is screwed on the second threaded section, the fixed end of a second sliding block is fixed on the second screw sleeve, the setting direction of a second guide rail is the same as the axial direction of the second auxiliary rotating shaft, the sliding end of the second sliding block is penetrated in the second guide rail, a second rotary trigger piece is arranged on one side of the second guide rail, the second rotary trigger piece is provided with a first end for pushing the second sliding block and a second end for pushing another trigger top block, the second screw sleeve drives the second sliding block to move in the second guide rail, and then the second rotary trigger piece is triggered by the second end of the second rotary trigger piece.

The invention further provides a mechanical limiting device applied to the worm and gear structure, and the mechanical limiting device realizes effective limiting of forward rotation and reverse rotation of the output shaft through ingenious mechanical connection and matching, and is particularly suitable for limiting rotation of a photovoltaic bracket.

Preferably, the trigger mechanism further comprises a mounting panel, the forward trigger mechanism and the reverse trigger mechanism are respectively hinged on the bottom surface of the mounting panel, and two straight line bar-shaped through grooves which are parallel to each other are formed in the mounting panel in a penetrating manner and used as the first guide rail and the second guide rail.

Preferably, the first rotary trigger piece comprises a bolt, a rotary drum, a reset spring, a first push plate serving as a first end of the first rotary trigger piece and a second push plate serving as a second end of the first rotary trigger piece, the bolt is fixed on the mounting panel, the first push plate is arranged at the lower part of the peripheral side face of the rotary drum, the second push plate is arranged at the upper part of the peripheral side face of the rotary drum, and the rotary drum is rotatably sleeved on the bolt.

In a natural state, the first push plate is blocked on the movement path of the first sliding block, and the second push plate faces the outer end face of the trigger top block.

Under the triggering state, the first sliding block is propped against the first pushing plate, the second pushing plate is propped against the outer end face of the triggering ejector block, axial thrust is applied to the triggering ejector block, and one end part of the elastic plug key is pushed by the triggering ejector block to shrink inwards to be separated from the bayonet of the clamping ring.

And in the process of switching the trigger state to the natural state, the first push plate and the second push plate are driven by the reset spring to restore to the natural state.

Preferably, the structure of the second rotary trigger piece is the same as that of the first rotary trigger piece, the second rotary trigger piece and the first rotary trigger piece are arranged in a central symmetry manner, and the movement directions of the first sliding block and the second sliding block are opposite.

Preferably, the first slider and the second slider are respectively provided with a length-adjustable device, the lengths of the first slider and the second slider are correspondingly adjusted through the length-adjustable device, and then the distance between the first rotary trigger piece and the second rotary trigger piece, which are corresponding to the push-collision, is adjusted to adjust the output quantity of the output shaft.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a cylindrical gear transmission structure, the trigger mechanism comprises a threaded sleeve and a shifting fork, the threaded sleeve is arranged on the output shaft, the shifting fork is fixedly arranged on the threaded sleeve, the fork-shaped end of the shifting fork is clamped on the input shaft, and the trigger mechanism moves to the trigger slipping mechanism along the axial direction along with the rotation of the output shaft.

The invention also provides a mechanical limiting method, wherein an input shaft drives an output shaft to rotate through a transmission mechanism, a slipping mechanism with controllable slipping direction is arranged between the input shaft and the transmission mechanism, the slipping mechanism is triggered to slip in different directions through an additionally arranged triggering mechanism, and the triggering mechanism and the output shaft are in action association, so that after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating; after the input shaft changes the input rotation direction, the slipping mechanism stops slipping, the transmission mechanism resumes normal transmission work and drives the output shaft to rotate, after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism again, so that slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating.

Preferably, the mechanical stop method is implemented on a mechanical stop device as described above.

Preferably, the mechanical limiting method of the invention comprises the following specific limiting processes:

1. when the input shaft is changed into a first direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; at the same time, the triggering mechanism is associated through the output shaft to perform corresponding actions;

2. When the output quantity of the output shaft reaches a corresponding preset quantity, the triggering mechanism just triggers the slipping mechanism, so that the transmission mechanism and the input shaft slip in a first direction, and at the moment, the output shaft stops outputting;

3. when the input shaft is changed into a second direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; simultaneously, the output shaft is associated with the trigger mechanism to perform corresponding actions, and the slipping state of the slipping mechanism in the first direction is relieved;

4. and the triggering mechanism just triggers the slipping mechanism until the output quantity of the output shaft in the second direction reaches a preset quantity in the second direction, so that the transmission mechanism slips in the second direction with the input shaft, and at the moment, the output shaft stops outputting.

Preferably, in step 1 and step 3, the output shaft is directly associated with the trigger mechanism or indirectly associated with the trigger mechanism through an external operation object to perform corresponding actions.

In summary, the mechanical limiting device and the mechanical limiting method adopt novel design concepts and original structural designs, and achieve the purposes of limiting triggering, fuzzy input and quantitative output without power supply. The fuzzy input and the quantitative output mean that the rotation quantity of the output shaft is quantitatively controlled, meanwhile, the input quantity is not required to be precisely controlled, and the precise and constant output quantity can be ensured by only adding a certain allowance.

According to the mechanical limiting device and the mechanical limiting method, the slipping mechanism is added between the input shaft and the output shaft, the slipping mechanism is triggered through the output shaft-related triggering mechanism, a closed-loop control system is formed, the whole process is completed in a mechanical mode, the structure is effective and reliable, and the mechanical limiting device and the mechanical limiting method can be used continuously in a severe environment better.

Drawings

Fig. 1 is a schematic perspective view of a mechanical limiting device according to a first embodiment.

Fig. 2 is a schematic view of the structure of the first embodiment without showing the mounting panel.

Fig. 3 is an exploded schematic view of the input shaft portion of the first embodiment.

Fig. 4 is a horizontal full sectional view of the worm portion of the first embodiment.

Fig. 5 is a schematic structural view of the collar and the elastic key end portion of the first embodiment.

Fig. 6 is a schematic perspective view of a mechanical limiting device according to a second embodiment.

Fig. 7 is a schematic exploded view of the input shaft portion of the second embodiment.

Fig. 8 is a schematic perspective view of a mechanical stop device according to another embodiment.

Fig. 9 is a schematic perspective view of a mechanical limiting device according to another embodiment.

Fig. 10 is a perspective view of a mechanical stop device according to another embodiment.

The reference numerals in the figures illustrate:

the input shaft 10, the mounting seat 11, the mounting slot 12, the output shaft 20, the transmission mechanism 30, the worm screw gear sleeve 31, the slipping mechanism 40, the sliding sleeve 41, the collar 42, the bayonet 421, the elastic plug-in key 43, the first plug-in key 431, the second plug-in key 432, the trigger top block 44, the trigger mechanism 50, the forward trigger mechanism 51, the first auxiliary rotating shaft 511, the first auxiliary driving gear 512, the first auxiliary driven gear 513, the first screw sleeve 514, the first slider 515, the first guide rail 516, the first rotary trigger 517, the latch 5171, the rotary drum 5172, the first push plate 5173, the second push plate 5174, the reverse trigger mechanism 52, the second auxiliary rotating shaft 521, the second auxiliary driving gear 522, the second auxiliary driven gear 523, the second screw sleeve 524, the second slider 525, the second guide rail 526, the second rotary trigger 527, the mounting panel 53, the screw sleeve 54, the shift fork 55, the auxiliary gear transmission mechanism 60, the circular turntable 70, the trigger lever 71, the left trigger slider 72, and the right trigger slider 73.

Detailed Description

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a mechanical limiting device, which includes an input shaft 10, an output shaft 20, a transmission mechanism 30, a slipping mechanism 40 with controllable slipping direction, and a triggering mechanism 50 for triggering the slipping mechanism to slip in different directions, wherein the input shaft 10, the transmission mechanism 30 and the output shaft 20 are combined to form a worm gear structure, and the input shaft 10 is connected with the output shaft 20 through the transmission mechanism 30.

As shown in fig. 3, the slip mechanism 40 of the present embodiment is provided between the input shaft 10 and the transmission mechanism 30, the trigger mechanism 50 is provided in association with the output shaft 20, and after the output shaft 20 outputs a predetermined amount, the trigger mechanism 50 triggers the slip mechanism 40 so that slip occurs between the input shaft 10 and the transmission mechanism 30.

In particular, as shown in fig. 3 and 4, where fig. 4 is a full cross-sectional view taken axially along the mounting slot location. The sliding mechanism 40 of this embodiment includes a sliding sleeve 41, a collar 42, an elastic insertion key 43 and a trigger top block 44, a mounting seat 11 is formed by radial protrusion of the middle section of the input shaft 10, the mounting seat 11 forms a mounting slot 12 along the axial direction of the input shaft 10, the elastic insertion key 43 is inserted into the mounting slot 12, two ends of the elastic insertion key 43 can stretch out and draw back along the axial direction, the sliding sleeve 41 is slidably sleeved on the mounting seat 11, two collars 42 are fixedly abutted to two ends of the sliding sleeve 41, two trigger top blocks 44 are slidably sleeved on the input shaft 10, the outer diameter of the inner end surface of the trigger top block 44 facing the mounting seat 11 is smaller than or equal to the inner diameter of the collar 42, the inner diameter of the collar 42 is smaller than the inner diameter of the sliding sleeve 41, a trigger top block 44 is correspondingly slidably inserted into an annular gap between the collar 42 and the input shaft 10 (as shown in fig. 4), and a bayonet 421 for unidirectional clamping the elastic insertion key 43 is formed on one side of each inner diameter adjacent to the mounting seat 11. The trigger mechanism 50 has a connection end for associated connection with the output shaft 20 and a trigger end for urging the trigger jack 44 to move the resilient key 43 relative to the collar 42, the input shaft 10 being connected to the transmission mechanism 30 by the sliding sleeve 41.

As shown in fig. 3, the mounting seat 11 of the present embodiment is a cylindrical mounting seat, the mounting slot 12 is a bar-shaped groove penetrating along the axis of the peripheral side surface of the mounting seat 11, the elastic insert key 43 includes a first insert key 431, a middle pressure spring (not shown in the drawing) and a second insert key 432, the first insert key 431 and the second insert key 432 are abutted through the middle pressure spring, the elastic insert key 43 is embedded in the mounting slot 12, under the action of the middle pressure spring, one end portion of the first insert key 431 far away from the middle pressure spring and one end portion of the second insert key 432 far away from the middle pressure spring all extend out of the mounting slot 12, and are abutted on the collar 42 on two sides.

As shown in fig. 5, the end faces of the two end portions of the elastic insert key 43 are inclined planes, the bayonet 421 is a right triangle groove formed on a side surface of the collar 42 adjacent to the sliding sleeve 41, the bottom surface of the bayonet 421 is a hypotenuse face (i.e. a plane where the hypotenuse of the right triangle is located), the end portion of the elastic insert key 43 is inserted into the bayonet 421 of the collar 42, and the inclined planes of the end portion of the elastic insert key 43 are attached to (with equal or similar slope) the hypotenuse face of the bayonet 421; when the elastic insert key 43 rotates towards one side of the inclined plane, the elastic insert key 43 receives axial thrust, the end part of the elastic insert key 43 retracts into the mounting slot 12, and the slipping mechanism 40 and the input shaft 10 slip; when the elastic insert key 43 rotates toward the side away from the inclined surface, the elastic insert key 43 keeps in an extended state (the right-angle side surface of the bayonet is attached to the side surface of the elastic insert key), and generates circumferential thrust to the bayonet 421 to drive the collar 42 to rotate, so that the slipping mechanism 40 and the transmission mechanism 30 rotate along with the input shaft 10.

As shown in fig. 3 to 5, the inclined surfaces of the two ends of the elastic key 43 are opposite, the inclined surfaces of the bayonet of the two collars 42 are opposite, and when triggered by the trigger mechanism 50 in different directions, the ends of the corresponding elastic key 43 and the bayonet 421 of the collars 42 play a corresponding role.

As shown in fig. 3, the installation process of the input shaft 10 part is to firstly arrange the elastic inserting key 43 in the installation slot 12, arrange the inclined planes of the two ends of the elastic inserting key 43 as shown in fig. 3, then sleeve the sliding sleeve 41 on the installation seat 11, limit the elastic inserting key 43 in the installation slot 12, extend the installation slot 12 from the two ends of the elastic inserting key, then weld and sleeve the worm screw tooth sleeve 31 on the sliding sleeve 41, and finally weld and fix the two clamping rings 42 on the two ports of the sliding sleeve 41. To further facilitate the triggering of the triggering mechanism 50, a triggering top block 44 is further sleeved at each of the two ends of the input shaft 10, the inner end of the triggering top block 44 close to the mounting seat 11 is slidably inserted into an annular gap between a collar 42 and the input shaft 10, and the outer end of the triggering top block 44 away from the mounting seat 11 is provided for triggering by the triggering mechanism 50. At this time, the slip mechanism 40 is defined on the outer peripheral side of the mounting seat 11, and is rotatable around the mounting seat 11, and the trigger block 44 is movable axially to a predetermined distance with respect to the mounting seat 11 to push the elastic key. Whether the slipping mechanism 40 and the mounting seat 11 slip in a certain direction mainly depends on the cooperation of the two ends of the elastic insertion key 43 and the bayonet 421 of the collar 42: the end inclined surface of the elastic inserting key 43 is clamped into the bayonet 421 of the corresponding clamping ring 42, and if the rotating direction rotates towards the inclined surface, the elastic inserting key slips, otherwise, the transmission mechanism 30 is driven to operate. By triggering the axial sliding of the top block 44, the elastic insert key 43 can be effectively pushed to be separated from the bayonet 421.

The number of the elastic inserting keys 43 in the present embodiment is a set, and two bayonets 421 are provided on each collar 42. In other embodiments, the number of the elastic inserting keys can be multiple groups, the number of bayonets arranged on each collar can be one or more, the specific structure of the elastic inserting keys can be other elastic pieces, and the bayonet form on the collar can be a right-angle triangle-like groove, a right-angle trapezoid-like groove or other wedge-shaped concave forms capable of realizing unidirectional clamping and fixing of the elastic inserting keys.

Specifically, the trigger mechanism 50 of the present embodiment includes a forward trigger mechanism 51 and a reverse trigger mechanism 52 as shown in fig. 1 and 2, the forward trigger mechanism 51 includes a first auxiliary rotating shaft 511, a first auxiliary driving gear 512, a first auxiliary driven gear 513, a first screw sleeve 514, a first slider 515, a first guide rail 516, and a first rotation trigger 517, and the reverse trigger mechanism 52 includes a second auxiliary rotating shaft 521, a second auxiliary driving gear 522, a second auxiliary driven gear 523, a second screw sleeve 524, a second slider 525, a second guide rail 526, and a second rotation trigger 527.

Referring to fig. 2, in this embodiment, a first auxiliary rotating shaft 511 is disposed on one side of an output shaft 20, the first auxiliary rotating shaft 511 is parallel to the output shaft 20, a first auxiliary driving gear 512 is fixed on the output shaft 20, a first auxiliary driven gear 513 is fixed on the first auxiliary rotating shaft 511, the first auxiliary driving gear 512 is meshed with the first auxiliary driven gear 513, the first auxiliary rotating shaft 511 has a first threaded section (not shown) for driving a first screw sleeve 514, the first screw sleeve 514 is screwed on the first threaded section, and a fixed end of a first slider 515 is fixed on the first screw sleeve 514. Referring to fig. 1, the first guide rail 516 is disposed in the same direction as the axial direction of the first auxiliary rotating shaft 511, the sliding end of the first slider 515 is disposed in the first guide rail 516 in a penetrating manner, the first rotary trigger member 517 is disposed on one side of the first guide rail 516, the first rotary trigger member 517 has a first end for pushing the first slider 515 and a second end for pushing the corresponding trigger top block 44, the first screw sleeve 514 drives the first slider 515 to move in the first guide rail 516, and the sliding end of the first slider 515 pushes the first end of the first rotary trigger member 517, so that the second end of the first rotary trigger member 517 pushes the corresponding trigger top block 44 to trigger the sliding mechanism 40.

The forward trigger mechanism and the reverse trigger mechanism of the present embodiment adopt the same structural configuration and are arranged in central symmetry with each other as shown in fig. 1 and 2.

The second auxiliary rotating shaft 521 of the present embodiment is disposed on the other side of the output shaft 20, the second auxiliary rotating shaft 521 is parallel to the output shaft 20, the second auxiliary driving gear 522 is fixed on the output shaft 20, the second auxiliary driven gear 523 is fixed on the second auxiliary rotating shaft 521, the second auxiliary driving gear 522 is meshed with the second auxiliary driven gear 523, the second auxiliary rotating shaft 521 has a second threaded section (not shown) for driving the second threaded sleeve 524, the second threaded sleeve 524 is screwed on the second threaded section, the fixed end of the second slider 525 is fixed on the second threaded sleeve 524, the second guide rail 526 is disposed in the same direction as the axial direction of the second auxiliary rotating shaft 521, the sliding end of the second slider 525 is inserted in the second guide rail 526, the second rotary trigger 527 is disposed on one side of the second guide rail 526, the second rotary trigger 527 has a first end for pushing the second slider 525 and a second end for pushing the other trigger top block 44, the second threaded sleeve 524 drives the second slider 525 to move in the second guide rail 526, and the second trigger block 44 is pushed by the second rotary trigger end 527 pushing the second rotary trigger block 527.

The trigger mechanism 50 of the present embodiment further includes a mounting panel 53 as shown in fig. 1, where the forward trigger mechanism 51 and the reverse trigger mechanism 52 are respectively hinged on the bottom surface of the mounting panel 53, and two straight bar-shaped through grooves parallel to each other are formed on the mounting panel 53 and used as the first guide rail 516 and the second guide rail 526.

Of course, in other specific embodiments, the invention also needs not to provide a mounting panel, and the first guide rail and the second guide rail can realize the limit of the first sliding block and the second sliding block by independently configuring the guide mechanism.

The first rotary trigger 517 of the present embodiment, as shown in fig. 2, includes a pin 5171, a drum 5172, a return spring (not shown), a first push plate 5173 serving as a first end of the first rotary trigger, and a second push plate 5174 serving as a second end of the first rotary trigger, the pin 5171 being fixed to the mounting panel 53, the first push plate 5173 being disposed at a lower portion of a circumferential surface of the drum 5172, the second push plate 5174 being disposed at an upper portion of a circumferential surface of the drum 5172, the drum 5172 being rotatably fitted over the pin 5171, the first push plate 5173 and the second push plate 5174 being disposed in a tangential direction of the circumferential surface of the drum 5172, and an included angle therebetween being 85 ° -95 °.

In a natural state, the first push plate 5173 is caught on the moving path of the first slider 515, and the second push plate 5174 faces the outer end surface of the trigger block 44 on the same side.

In the triggering state, the first slider 515 is abutted against the first push plate 5173, the second push plate 5174 is abutted against the outer end face of the triggering top block 44, and an axially inward pushing force is applied to the triggering top block 44, and one end of the elastic plug key 43 is pushed by the triggering top block 44 to shrink inwards to disengage from the bayonet 421 of the collar 42.

In the process of switching the trigger state to the natural state, the first push plate 5173 and the second push plate 5174 are driven by the return spring to return to the natural state.

The return spring of the present embodiment may be a torsion spring or a coil spring wound inside the drum, a tension spring with one end connected to the first push plate and the other end connected to the outside, or other return mechanisms for driving the first push plate and the second push plate to return to the natural state.

The second rotation triggering member 527 of the present embodiment has the same structure as the first rotation triggering member 517 described above, and the second rotation triggering member 527 and the first rotation triggering member 517 are arranged in a central symmetry, and the movement directions of the first slider 515 and the second slider 525 are opposite.

In other specific embodiments, the structure of the second rotary trigger piece and the first rotary trigger piece of the present invention may not be identical and symmetrically arranged, and specific length designs and relative screw positions of the first slider and the second slider may also be adjusted according to actual situations, where a length adjustable device may be added to each of the first slider and the second slider for adjusting the setting length thereof, so that the setting of preset output amounts of different output shafts may be better adapted, which will not be repeated here.

Of course, besides the specific association arrangement of the output shaft and the triggering mechanism and the structure of triggering the slipping mechanism thereof described in the embodiment, other direct or indirect association arrangement structures, such as indirect association of the triggering mechanism by an external operation object, can be used between the output shaft, the triggering mechanism and the slipping mechanism so as to realize corresponding triggering of the slipping mechanism. Fig. 8 shows a structural design of another indirectly related mechanical limiting device of the present invention, and in combination with the structural form shown in fig. 8, the operation object of the output shaft 20 is a circular turntable 70, the circular turntable 70 is operated by the output shaft 20 to perform forward and reverse rotation movements, when the circular turntable 70 rotates to a set position, a trigger rod 71 on the circular turntable 70 pushes a left trigger slide 72 or a right trigger slide 73 (i.e. a trigger mechanism), so as to generate corresponding pushing to the sliding mechanism 40, thereby realizing effective limiting and being beneficial to accurate limiting control of the operation object. Of course, in other specific embodiments, the operation object of the output shaft may be in other various forms, such as a square turnover plate, a column-shaped rotating column, a rotating table or a rotating frame, which all fall within the scope of the present invention, and those skilled in the art need only make adaptive modifications according to the teachings of the present invention, and will not be described herein.

Example two

The present embodiment also proposes another mechanical limiting device, which is different from the first embodiment mainly in the transmission structure and the triggering device.

As shown in fig. 6, the input shaft 10, the transmission mechanism 30 and the output shaft 20 of the present embodiment are combined to form a cylindrical gear transmission structure, the input shaft 10 and the output shaft 20 are arranged in parallel and side by side, the trigger mechanism 50 includes a threaded sleeve 54 and a shift fork 55, the threaded sleeve 54 is screwed on the output shaft 20, the shift fork 55 is fixedly arranged on the threaded sleeve 54, a fork end of the shift fork 55 is clamped on the input shaft 10, and the trigger mechanism 50 moves axially to the trigger slipping mechanism 40 following the rotation of the output shaft 20.

The triggering mechanisms of the embodiment are specifically divided into two groups, as shown in fig. 6, each group of triggering mechanisms 50 includes a threaded sleeve 54 and a shifting fork 55, the two groups of triggering mechanisms 50 are correspondingly arranged at two sides of the slipping mechanism 40, and the two triggering mechanisms 50 are driven to do corresponding axial displacement through the association of the output shaft 20, so as to realize the slipping triggering control. According to actual needs, the thread section setting and the thread sleeve position on the output shaft 20 are adjusted, and the corresponding trigger limit function is realized.

In this embodiment, the input shaft and the output shaft shown in fig. 6 are arranged in parallel, and according to actual needs, the present invention may be adaptively modified into a cross shaft arrangement form in other embodiments, as fig. 9 shows another mechanical limiting device of cross shaft arrangement, where the input shaft 10, the transmission mechanism 30 and the output shaft 20 are combined to form a cross bevel gear transmission mechanism, the output shaft 20 is disposed above the input shaft 10, and the trigger mechanism 50 screwed at two ends of the output shaft 20 is associated to perform slip trigger control on the slip mechanism 40, so as to implement a corresponding trigger limiting function.

The same or other similarities with the first embodiment may be directly referred to the description of the first embodiment, and fig. 6 and 7 of the present embodiment are shown in the present embodiment, which will not be described again. In other embodiments, the triggering mechanism of the present invention may also use a set of triggering mechanisms, where the shifting fork is slidably engaged with other auxiliary components such as the collar, the sliding sleeve, or the sliding top block, so as to trigger the sliding mechanism from two directions. In addition, in addition to the manner of directly associating the triggering mechanism 50 with the output shaft as in the second embodiment, the triggering mechanism 50 can be indirectly associated with the motion of the triggering mechanism through the association transmission of the auxiliary mechanism, as in other embodiments shown in fig. 10, the triggering mechanism 50 is screwed on the rotating shaft of the auxiliary gear transmission mechanism 60 through the addition of the auxiliary gear transmission mechanism 60, and the sliding mechanism 40 is correspondingly triggered through a shifting fork 55 with double fork ends.

Fig. 1 to 10 show several embodiments of the present invention, which are included in the scope of the present invention. Of course, the input shaft, the transmission mechanism and the output shaft of the mechanical limiting device of the present invention may be combined to form a worm gear structure as described in the first embodiment or a cylindrical gear transmission structure as described in the second embodiment, and may also be combined to form other transmission structures such as a bevel gear transmission mechanism, a synchronous belt transmission structure or a chain transmission structure, which are not described herein again.

Example III

The embodiment provides a mechanical limiting method, wherein a slipping mechanism with controllable slipping direction is arranged between an input shaft and a transmission mechanism, the slipping mechanism is triggered to slip in different directions through an additionally arranged triggering mechanism, and the triggering mechanism and an output shaft are in action association, so that after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating; after the input shaft changes the input rotation direction, the slipping mechanism stops slipping, the transmission mechanism resumes normal transmission work and drives the output shaft to rotate, after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism again, so that slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating.

The mechanical limiting method of the present embodiment is implemented on the mechanical limiting device of the first embodiment or the second embodiment, and the specific limiting process is as follows:

step 1, when the input shaft is changed into a first direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; at the same time, the corresponding action is carried out by directly associating the output shaft or indirectly associating the trigger mechanism through an external operation object.

And 2, when the output quantity of the output shaft reaches a corresponding preset quantity, the triggering mechanism just triggers the slipping mechanism, so that the transmission mechanism slips with the input shaft in a first direction, and at the moment, the output shaft stops outputting.

Step 3, when the input shaft is changed into a second direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; at the same time, the output shaft is directly associated with the trigger mechanism or indirectly associated with the trigger mechanism through an external operation object to perform corresponding actions, so that the slipping state of the slipping mechanism in the first direction is relieved.

And 4, when the output quantity of the output shaft in the second direction reaches a preset quantity in the second direction, the triggering mechanism just triggers the slipping mechanism, so that the transmission mechanism and the input shaft slip in the second direction, and at the moment, the output shaft stops outputting.

Specifically, if the output shaft is required to be limited to output 40 circles in the same direction each time. For convenience of description, taking the mechanical limiting device of the first embodiment as an example, as shown in fig. 3, the two collars 42 specifically include a left collar (the collar at the left side of fig. 3), a right collar (the collar at the right side of fig. 3), the bayonet disposed on the left collar is a left bayonet, the bayonet disposed on the right collar is a right bayonet, and the two end portions of the elastic key 43 specifically include a left end portion (the end portion at the left side of the elastic key in fig. 3) and a right end portion (the end portion at the right side of the elastic key in fig. 3); the two trigger top blocks 44 are shown in fig. 3 and 4, and specifically include a left trigger top block (trigger top block at the left side in fig. 3 and 4) and a right trigger top block (trigger top block at the right side in fig. 3 and 4). At a gear ratio of 20:1, as shown in fig. 5, the right end of the elastic key is clamped in the right bayonet in the initial state, and the input shaft 10 inputs 0-800 circles in the direction deviating from the inclined plane of the right bayonet, the slipping mechanism 40 does not slip, and the output shaft 20 correspondingly outputs 0-40 circles. Meanwhile, the output shaft 20 is sequentially driven to the first slider 515 through the first auxiliary driving gear 512, the first auxiliary driven gear 513, the first auxiliary rotating shaft 511 and the first threaded sleeve 514, so that the first slider 515 moves linearly along the first guide rail 516, when the output shaft 20 outputs a predetermined amount, the first slider 515 just pushes the first push plate 5173 on the first rotation trigger 517 to drive the second push plate 5174, so that the right trigger push block is pushed to slide axially leftwards to abut against the right end part of the elastic insert key, and is pushed axially until the right end part of the elastic insert key 43 is separated from the right bayonet, and although the left collar abuts against the left end part of the elastic insert key, the steering is rotated towards the direction of the abutting inclined plane of the left bayonet and the left end part, so that the clamping and fixing cannot be formed, and the slipping mechanism starts slipping on the steering.

Under the condition of slipping, the input shaft 10 continues to be input in the same direction and cannot be transmitted to the output shaft 20 until the input shaft 10 changes the input steering direction, the elastic inserting key also moves reversely, the left end part of the elastic inserting key 43 is clamped into the left bayonet and pushes the left clamping ring to rotate, the recovery transmission mechanism 30 operates to drive the output shaft 20 to reversely output, the forward trigger mechanism 51 resets under the associated action of the output shaft 20, the reverse trigger mechanism 52 gradually approaches the left clamping ring until the output shaft outputs a preset amount, the reverse trigger mechanism pushes the left trigger jacking block to axially move to the right until the left end part of the elastic inserting key is disconnected from the left bayonet (the specific trigger process can refer to the forward output process), and the slipping mechanism starts slipping on the steering direction. And the limiting output can be carried out again after the steering is switched.

Of course, in the mechanical limiting device shown in fig. 9, the output shaft of the mechanical limiting device in the embodiment in step 1 and step 3 may be indirectly associated with the trigger mechanism through an external operation object to perform a corresponding action.

While the invention has been described with respect to the preferred embodiments, it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims

1. The utility model provides a mechanical stop device, includes input shaft, output shaft and drive mechanism, the input shaft passes through drive mechanism connects output shaft, its characterized in that: the mechanical limiting device further comprises a slipping mechanism with controllable slipping directions and a triggering mechanism for triggering the slipping mechanism to slip in different directions, the slipping mechanism is arranged between the input shaft and the transmission mechanism, the triggering mechanism is arranged in association with the output shaft, and after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, so that slipping occurs between the input shaft and the transmission mechanism;

the sliding mechanism comprises a sliding sleeve, a clamping ring, an elastic inserting key and a triggering top block, wherein an installation seat is formed in a radial bulge mode at the middle section of the input shaft, an installation slot is formed in the installation seat along the axial direction of the input shaft, the elastic inserting key is inserted into the installation slot, two end portions of the elastic inserting key can stretch out and draw back along the axial direction, the sliding sleeve is arranged on the installation seat in a sliding sleeve manner, the two clamping rings are fixedly butted at two end portions of the sliding sleeve, and the two triggering top blocks are arranged on the input shaft in a sliding sleeve manner; the trigger mechanism is provided with a connecting end used for being connected with the output shaft in an associated mode and a trigger end used for enabling the trigger jacking block to push the elastic plug key to move relative to the clamping ring, and the input shaft is connected with the transmission mechanism through the sliding sleeve.

2. The mechanical stop device of claim 1, wherein: the outer diameter of the inner end surface of the trigger top block facing the mounting seat is smaller than or equal to the inner diameter of the clamping ring, the inner diameter of the clamping ring is smaller than the inner diameter of the sliding sleeve, one trigger top block is correspondingly and slidably inserted into an annular gap between the clamping ring and the input shaft, and a bayonet used for unidirectionally clamping the elastic inserting key is formed in one side, adjacent to the mounting seat, of each inner diameter of the clamping ring.

3. The mechanical stop device of claim 2, wherein: the installation seat is a cylindrical installation seat, the installation slot is a strip-shaped groove which is communicated with the axis of the peripheral side face of the installation seat, the elastic inserting key comprises a first inserting key, a middle pressure spring and a second inserting key, the first inserting key and the second inserting key are in butt joint through the middle pressure spring, the elastic inserting key is embedded in the installation slot, under the action of the middle pressure spring, the first inserting key is far away from one end part of the middle pressure spring and one end part of the second inserting key, which is far away from the middle pressure spring, extends out of the installation slot and is in butt joint with the clamping ring.

4. The mechanical stop device of claim 2, wherein: the end faces of the two end parts of the elastic inserting key are inclined planes, the bayonet is a right triangle groove formed in one side face of the clamping ring adjacent to the sliding sleeve, the bottom face of the bayonet is a bevel edge face, the end parts of the elastic inserting key are inserted into the bayonet of the clamping ring, and the inclined planes of the elastic inserting key are attached to the bevel edge face of the bayonet; the elastic inserting key rotates towards one side of the inclined plane, the elastic inserting key receives axial thrust, the end part of the elastic inserting key retracts into the mounting slot, and the slipping mechanism and the input shaft slip; the elastic inserting key rotates towards one side deviating from the inclined plane, so that the elastic inserting key keeps an extending state, generates circumferential thrust to the bayonet, drives the clamping ring to rotate, and then enables the slipping mechanism and the transmission mechanism to rotate along with the input shaft.

5. A mechanical stop device according to any one of claims 2 to 4, wherein: the input shaft, the transmission mechanism and the output shaft are combined to form a worm and gear structure, a cylindrical gear transmission structure, a bevel gear transmission mechanism, a synchronous belt transmission structure or a chain transmission structure.

6. A mechanical stop device according to any one of claims 2 to 4, wherein: the input shaft, the transmission mechanism and the output shaft are combined to form a worm and gear structure, the triggering mechanism comprises a forward triggering mechanism and a reverse triggering mechanism, the forward triggering mechanism comprises a first auxiliary rotating shaft, a first auxiliary driving gear, a first auxiliary driven gear, a first screw sleeve, a first sliding block, a first guide rail and a first rotary triggering piece, and the reverse triggering mechanism comprises a second auxiliary rotating shaft, a second auxiliary driving gear, a second auxiliary driven gear, a second screw sleeve, a second sliding block, a second guide rail and a second rotary triggering piece;

the first auxiliary rotating shaft is arranged on one side of the output shaft side by side, the first auxiliary rotating shaft is parallel to the output shaft, the first auxiliary driving gear is fixed on the output shaft, the first auxiliary driven gear is fixed on the first auxiliary rotating shaft, the first auxiliary driving gear is meshed with the first auxiliary driven gear, the first auxiliary rotating shaft is provided with a first threaded section for driving the first threaded sleeve, the first threaded sleeve is screwed on the first threaded section, the fixed end of the first sliding block is fixed on the first threaded sleeve, the arrangement direction of the first guide rail is the same as the axial direction of the first auxiliary rotating shaft, the sliding end of the first sliding block is arranged in the first guide rail in a penetrating manner, the first rotary trigger piece is arranged on one side of the first guide rail, the first rotary trigger piece is provided with a first end for pushing the first sliding block and a second end for pushing the trigger top block, the first threaded sleeve drives the first sliding block to move in the first guide rail, and then the first rotary trigger piece is pushed by the first rotary trigger piece through the first push end of the first rotary trigger piece;

7. The mechanical stop device of claim 6, wherein: the trigger mechanism further comprises an installation panel, the forward trigger mechanism and the reverse trigger mechanism are respectively hinged to the bottom surface of the installation panel, and two straight line strip-shaped through grooves which are parallel to each other are formed in the installation panel in a penetrating mode and serve as the first guide rail and the second guide rail.

8. The mechanical stop device of claim 7, wherein: the first rotary trigger piece comprises a bolt, a rotary drum, a reset spring, a first push plate serving as a first end of the first rotary trigger piece and a second push plate serving as a second end of the first rotary trigger piece, the bolt is fixed on the mounting panel, the first push plate is arranged at the lower part of the peripheral side surface of the rotary drum, the second push plate is arranged at the upper part of the peripheral side surface of the rotary drum, and the rotary drum is rotatably sleeved on the bolt;

in a natural state, the first push plate is blocked on the movement path of the first sliding block, and the second push plate faces the outer end face of the trigger top block;

in a triggering state, the first sliding block is propped against the first pushing plate, the second pushing plate is propped against the outer end surface of the triggering ejector block, axial thrust is applied to the triggering ejector block, and one end part of the elastic plug key is pushed by the triggering ejector block to shrink inwards to be separated from the bayonet of the clamping ring;

9. The mechanical stop device of claim 8, wherein: the structure of the second rotary trigger piece is the same as that of the first rotary trigger piece, the second rotary trigger piece and the first rotary trigger piece are arranged in a central symmetry mode, and the movement directions of the first sliding block and the second sliding block are opposite.

10. A mechanical stop device according to any one of claims 7 to 9, wherein: the first sliding block and the second sliding block are respectively provided with a length-adjustable device.

11. A mechanical stop device according to any one of claims 1 to 4, wherein: the input shaft, the transmission mechanism and the output shaft are combined to form a cylindrical gear transmission structure, the trigger mechanism comprises a threaded sleeve and a shifting fork, the threaded sleeve is arranged on the output shaft, the shifting fork is fixedly arranged on the threaded sleeve, the fork-shaped end of the shifting fork is clamped on the input shaft, and the trigger mechanism moves to the trigger slipping mechanism along the axial direction along with the rotation of the output shaft.

12. The mechanical limiting method is characterized in that an input shaft drives an output shaft to rotate through a transmission mechanism, and the mechanical limiting method is characterized in that: implementing the mechanical stop method on a mechanical stop device according to any one of claims 1-11; a slipping mechanism with controllable slipping direction is arranged between the input shaft and the transmission mechanism, the slipping mechanism is triggered to slip in different directions through an additionally arranged triggering mechanism, and the triggering mechanism and the output shaft are in action association, so that after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism, slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating; after the input shaft changes the input rotation direction, the slipping mechanism stops slipping, the transmission mechanism resumes normal transmission work and drives the output shaft to rotate, after the output shaft outputs a preset amount, the triggering mechanism triggers the slipping mechanism again, so that slipping occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating.

13. The mechanical spacing method of claim 12, wherein the specific spacing process is as follows:

(1) When the input shaft is changed into a first direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; at the same time, the triggering mechanism is associated through the output shaft to perform corresponding actions;

(2) When the output quantity of the output shaft reaches a corresponding preset quantity, the triggering mechanism just triggers the slipping mechanism, so that the transmission mechanism slips in a first direction with the input shaft, and at the moment, the output shaft stops outputting;

(3) When the input shaft is changed into a second direction for input, the input shaft drives the output shaft to correspondingly output through the transmission mechanism; simultaneously, the output shaft is associated with the trigger mechanism to perform corresponding actions, and the slipping state of the slipping mechanism in the first direction is relieved;

(4) And the triggering mechanism just triggers the slipping mechanism until the output quantity of the output shaft in the second direction reaches a preset quantity in the second direction, so that the transmission mechanism slips in the second direction with the input shaft, and at the moment, the output shaft stops outputting.

14. The mechanical limiting method according to claim 13, wherein in step 1 and step 3, the output shaft is directly associated with the trigger mechanism or indirectly associated with the trigger mechanism through an external operation object to perform corresponding actions.