Mechanism and method for converting fixed-angle rotation into axial intermittent limiting

Abstract

The application discloses a kind of fixed angle rotation conversion into axial intermittent limiting mechanism and conversion method, belong to limiting mechanism technical field, it includes axial intermittent limiting mechanism and yoke type fixed angle rotation mechanism, yoke type fixed angle rotation mechanism is pure mechanical structure, axial reciprocating motion can be converted into fixed angle rotation, axial intermittent limiting mechanism is also pure mechanical structure, it includes stabilizing disc, rotating disc and multiple groups of sliding components, can be converted into the axial intermittent limiting of sliding rod in sliding component by fixed angle rotation.This application makes yoke type fixed angle rotation mechanism rotate by pure mechanical way, to drive the rotation of rotating disc, finally realizes the axial upward limiting and unlimiting of sliding rod alternately.Compared with the existing direct electric control mode, structure is simpler, easy to maintain, cost is lower, and has longer life in high temperature environment.

Description

Technical Field

[0001] This invention relates to the field of limiting mechanism technology, specifically to a mechanism and method for converting fixed-angle rotation into axial intermittent limiting. Background Technology

[0002] During the hoisting of large crucibles, it is necessary to axially limit and release a certain component, and these actions must be performed alternately to ensure remote operation of the crucible hoisting. Currently, the method for alternating between limiting and releasing the movement of a component in a certain direction mainly employs electric control, using a servo motor to directly limit or release the component. However, this method has the following drawbacks:

[0003] (1) The structure is complex and the volume is large, making it inconvenient to use, maintain and repair;

[0004] (2) Using electric control methods will result in higher costs;

[0005] (3) Electric control methods have a short service life and low cost performance in extreme and harsh environments such as high temperature and high humidity. Summary of the Invention

[0006] The purpose of this invention is to provide a mechanism and method for converting fixed-angle rotation into axial intermittent limiting, so as to solve the problems of complex structure, high cost and short life caused by the existing method of alternating between limiting and not limiting movement in a certain direction using electric control components.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0008] A mechanism for converting fixed-angle rotation into axial intermittent limiting includes: an axial intermittent limiting mechanism and a fork-type fixed-angle rotation mechanism.

[0009] The axial intermittent limiting mechanism includes: a stabilizing disc, a rotating disc, and multiple sets of sliding components;

[0010] The rotating disk is located on top of the stabilizing disk and rotates in cooperation with the rotating disk; the stabilizing disk and the rotating disk are respectively provided with the same number of slots and holes as the sliding components;

[0011] The sliding assembly includes a guide sleeve and a slide rod; the guide sleeve extends into the through-hole and connects to the stabilizing disc, and the slide rod slides in cooperation with the guide sleeve and extends out through the through-hole;

[0012] The fork-type fixed-angle rotation mechanism is fixedly connected to the stabilizing disk and connected to the rotating disk. The fork-type fixed-angle rotation mechanism drives the rotating disk to rotate at a fixed angle, thereby intermittently limiting the slide rod in the axial direction.

[0013] Furthermore, the aforementioned fork-type fixed-angle rotation mechanism includes: a slide rail sleeve, a pull rod, an indexing fork, and a lever;

[0014] The slide rail sleeve is provided with a linear guide rail and an inclined guide rail in sequence from the top. The top end of the inclined guide rail is connected to the bottom end of the linear guide rail. The axial length of the inclined guide rail is greater than the width of the linear guide rail. The top of the slide rail sleeve is also provided with multiple limiting grooves at even intervals.

[0015] The indexing fork is sleeved on the pull rod and slides into the slide rail sleeve. The indexing fork has fork grooves at its bottom end, the number and distribution of which are the same as the limiting grooves, forming multiple fork blocks. The top outer side of the indexing fork has an outer ring protrusion that matches the limiting groove.

[0016] The lever is sleeved at the bottom of the pull rod and connected to the pull rod through the lever pin. The lever pin slides with the linear guide rail. The top of the lever extends into the interior of the indexing fork and is provided with a lever block that slides with the fork groove.

[0017] The slide rail sleeve is fixedly connected to the bottom of the stabilizer plate, the indexing fork slides with the rotating plate to drive the rotating plate to rotate, and the pull rod passes through the stabilizer plate and the rotating plate.

[0018] Furthermore, the bottom width of the aforementioned limiting groove is greater than the width of the outer ring protrusion, the width of the linear guide rail, and the diameter of the lever pin.

[0019] Furthermore, guide slopes are provided on both sides of the aforementioned limiting groove, with an inclination angle of 30° to 60°.

[0020] Furthermore, the end face of the aforementioned lever pin is lower than or equal to the outer surface of the slide rail sleeve; the outer diameter of the lever block is consistent with the outer diameter of the indexing fork; a dust cover is connected to the outer side of the slide rail sleeve, and the dust cover is fixedly connected to the bottom of the stabilizing plate.

[0021] Furthermore, each of the above-mentioned slots is provided with mounting ears on both sides. The mounting ears are located on the bottom side of the stabilizing plate, and the mounting ears of the same slot are rotatably connected to the guide sleeve through the guide sleeve pin.

[0022] Furthermore, the outer side of the aforementioned stabilizing disk is provided with multiple stabilizing disk lugs. The stabilizing disk lugs are connected to limit rollers via stabilizing disk lug pins. The limit rollers contact the rotating disk and are used to limit the rotation of the rotating disk along its central axis.

[0023] Furthermore, a rotating block is provided at the bottom center of the aforementioned rotating disk, and the rotating block passes through the stabilizing disk; a connecting block is provided on the outer side of the rotating block, and an inner ring groove that slides with the connecting block is provided on the top inner side of the indexing fork.

[0024] Furthermore, the aforementioned mounting ear is integrally formed with the stabilizing plate; the perforation is a fan-shaped hole.

[0025] A method for transforming a mechanism based on the above-mentioned fixed-angle rotation into an axially discontinuous limiting mechanism includes the following steps:

[0026] S1: The pull rod, lever, and slide rod move downwards under the action of gravity. The lever pin slides downwards in the linear guide rail, and the lever block slides in the shift fork groove until the lever block disengages from the shift fork groove. At this time, the outer ring protrusion is stuck in the limiting groove.

[0027] S2: The pull rod, lever, and slide rod continue to move downwards, and the lever pin moves along the linear guide to the bottom side of the inclined guide;

[0028] S3: The pull rod, lever, and slide rod continue to move downwards. The lever pin moves along the bottom wall of the inclined guide rail to the lowest point of the inclined guide rail. At this time, the pull rod and lever rotate accordingly, and the top of the slide rod enters the guide sleeve.

[0029] S4: The pull rod, lever, and slide rod move upwards, and the lever pin moves vertically upwards along the inclined guide rail until it contacts the top wall of the inclined guide rail, driving the lever block into the next shift fork slot. At this time, the top of the slide rod is located inside the guide sleeve.

[0030] S5: The pull rod, lever, and slide rod continue to move upward. The lever pin moves along the top wall of the inclined guide rail. At this time, the pull rod and lever rotate accordingly. During the upward rotation of the lever, the indexing fork rotates, causing the outer ring protrusion to be squeezed out of the limiting groove and cooperate with the next limiting groove under the action of gravity. At this time, the rotating disk rotates under the drive of the indexing fork and blocks the groove.

[0031] S6: The lever, lever, and slide bar continue to move upward, the lever pin moves upward along the linear guide rail, and the top of the slide bar contacts the rotating disk, thereby axially and upwardly limiting the slide bar through the rotating disk;

[0032] S7: Repeat steps S1 to S5, this time the slots and holes correspond to each other;

[0033] S8: The pull rod, lever, and slide rod move upwards, and the top of the slide rod passes through the through hole 54. At this time, the slide rod is released from its limit.

[0034] S9: Repeat steps S1 to S8 to convert the fixed-angle rotation into axial intermittent limiting.

[0035] The present invention has the following beneficial effects:

[0036] (1) This invention uses a purely mechanical method to rotate the fork-type fixed-angle rotating mechanism at a fixed angle, thereby driving the rotation of the rotating disk, and ultimately realizing the alternating axial upper limit and lower limit of the slide rod. Compared with the existing method of directly using electric control, the structure is simpler, easier to maintain, and lower in cost, and has a longer service life in high-temperature environments.

[0037] (2) The axial intermittent limiting mechanism of the present invention is used to alternately limit and release the axial upward movement of the slide rod. When not limited, the slide rod passes through the through hole. When limiting is required, the slide rod slides axially downward under the action of gravity (ensuring that the slide rod remains in the guide sleeve after sliding down to the lowest point). After the slide rod slides out of the through hole, the rotating disk is rotated, and the top of the slide rod corresponds to the rotating disk, restricting the axial upward movement of the top of the slide rod at the rotating disk. When limiting is not required, the rotating disk is rotated, and the top of the slide rod corresponds to the through hole, allowing the slide rod to pass through the through hole when moving axially upward, thereby releasing the axial limitation on the slide rod. Repeating the above steps can achieve the alternating axial upward limiting and release of the slide rod.

[0038] (3) The fixed-angle rotation mechanism of the fork of the present invention transforms the axial reciprocating motion of gravity downward and pulling upward into a pure mechanical mechanism of indexing fork fixed-angle rotation. Compared with the existing electric control method, it has a simple structure, small size, convenient use, maintenance and repair, low cost, high cost performance, and can greatly improve the service life in extreme harsh environments such as high temperature and high humidity.

[0039] (4) The present invention can make the lever pin move along the set path by gravity and upward pulling force, thereby turning the axial reciprocating motion into the fixed angle rotation motion of the indexing fork and the rotating disk, and finally realize the alternating axial upper limit and release of the slide bar. The whole operation process is simple, convenient and reliable. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the mechanism for converting fixed-angle rotation into axial intermittent limiting according to the present invention;

[0041] Figure 2 A schematic diagram of the structure of the mechanism for converting fixed-angle rotation into axial intermittent limiting according to the present invention when the dust cover is opened;

[0042] Figure 3 This is a schematic diagram of the axial discontinuous limiting mechanism of the present invention;

[0043] Figure 4 This is a schematic diagram of the structure of the stabilizer disk of the present invention;

[0044] Figure 5 This is a schematic diagram of the rotating disk of the present invention;

[0045] Figure 6 This is a schematic diagram of the structure of the fork-type fixed-angle rotation mechanism of the present invention;

[0046] Figure 7 This is an exploded structural diagram of the fork-type fixed-angle rotation mechanism of the present invention;

[0047] Figure 8This is a schematic diagram of the unfolded structure of the slide rail sleeve of the present invention;

[0048] Figure 9 This is a schematic diagram of the indexing fork of the present invention;

[0049] Figure 10 This is a schematic diagram of the connection structure between the rotary disk and the indexing fork of the present invention.

[0050] In the diagram: 50-Axial intermittent limiting mechanism; 51-Stabilizing disc; 52-Rotating disc; 53-Groove; 54-Perforation; 55-Guide sleeve; 56-Slide rod; 57-Mounting ear; 58-Guide sleeve pin; 70-Fork-type fixed-angle rotation mechanism; 71-Slide rail sleeve; 72-Pull rod; 73-Indexing fork; 74-Toggle rod; 75-Toggle rod pin; 76-Dust cover; 511-Stabilizing disc ear; 512-Stabilizing disc ear pin; 513-Limiting roller; 521-Rotating block; 522-Connecting block; 711-Linear guide rail; 712-Inclined guide rail; 713-Limiting groove; 714-Guide inclined surface; 731-Toggle fork groove; 732-Toggle fork block; 733-Outer ring protrusion; 734-Inner ring groove; 741-Toggle block. Detailed Implementation

[0051] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0052] Example 1

[0053] Please refer to Figure 1 and Figure 2 This embodiment provides a mechanism for converting fixed-angle rotation into axial intermittent limiting, which includes an axial intermittent limiting mechanism 50 and a fork-type fixed-angle rotation mechanism 70. The fork-type fixed-angle rotation mechanism 70 is used to convert axial reciprocating motion into fixed-angle rotation, and the axial intermittent limiting mechanism 50 is used to convert fixed-angle rotation into axial intermittent limiting of the slide rod 56.

[0054] Please refer to Figures 3 to 5 The axial intermittent limiting mechanism 50 includes a stabilizing disk 51, a rotating disk 52, and three sets of sliding components. The rotating disk 52 is located on top of the stabilizing disk 51 and rotates in cooperation with it. The three sets of sliding components are evenly spaced around the stabilizing disk 51 and pass through the rotating disk 52. The rotating disk 52 rotates to alternately limit and release the sliding components axially upward. Compared with the existing method of directly using electric control, the structure is simpler, easier to maintain, and lower in cost, and it has a longer service life in high-temperature environments.

[0055] The stabilizing disk 51 has a mounting hole in the middle, and three through slots 53 are evenly spaced along the edge of the stabilizing disk 51. Each through slot 53 has mounting ears 57 on both sides. In this embodiment, the mounting ears 57 are located at the bottom of the stabilizing disk 51 and are integrally formed with the stabilizing disk 51. Multiple upwardly extending stabilizing disk ears 511 are welded to the edge of the stabilizing disk 51. The stabilizing disk ears 511 are connected to limiting rollers 513 through stabilizing disk ear pins 512. The limiting rollers 513 are rotatably connected to the stabilizing disk ear pins 512 and their rolling surfaces are in contact with the top surface of the rotating disk 52 to limit the rotation of the rotating disk 52 along its central axis.

[0056] A rotating block 521 is provided at the bottom of the rotating disk 52. The rotating block 521 passes through the mounting hole of the stabilizing disk 51, and the rotating disk 52 is restricted by the rotating block 521, the stabilizing disk lug 511, and the limiting roller 513, so that the rotating disk 52 can only rotate along its own central axis. The outer wall of the rotating block 521 is provided with a connecting block 522 for sliding engagement with the fork-type fixed angle rotating mechanism 70. Three through holes 54 are provided on the rotating disk 52, and the through holes 54 correspond one-to-one with the through slots 53 and the sliding components, allowing the sliding components to pass through the through holes 54 and the through slots 53.

[0057] In order to allow the sliding component to pass smoothly through the through hole 54, in this embodiment, the through hole 54 is a fan-shaped hole, and the boundaries on both sides of the through groove 53 are projected into the fan-shaped hole.

[0058] The sliding assembly includes a guide sleeve 55 and a slide rod 56. The guide sleeve 55 is rotatably connected to the corresponding mounting lug 57 via a guide sleeve pin 58, allowing the overall position of the sliding assembly to be not limited to the vertical direction, but also to a certain angle with the vertical direction. The slide rod 56 passes through the guide sleeve 55 and slides in engagement with it. At the same time, the slide rod 56 passes through the through hole 54, at which point the slide rod 56 is in an unrestricted state.

[0059] In other embodiments of the present invention, the number of sliding components may be 1, 2, 4, 5, etc., in which case the number of slots 53 and holes 54 will change accordingly.

[0060] Please refer to Figures 6 to 9 The fork-type fixed-angle rotation mechanism includes: slide rail sleeve 71, pull rod 72, indexing fork 73 and lever 74. The slide rail sleeve 71, indexing fork 73, lever 74 and pull rod 72 are sequentially sleeved from the outside to the inside, and adjacent components slide together from the outside to the inside.

[0061] The slide rail sleeve 71 is a hollow cylinder, comprising two sets of guide rails. These two sets of guide rails are evenly spaced along the circumference of the slide rail sleeve 71, providing more stable guidance. Obviously, in other embodiments of the invention, the number of guide rails can also be 1, 3, 4, etc. The guide rails include a linear guide rail 711 and an inclined guide rail 712 arranged sequentially from the top. The top end of the linear guide rail 711 extends to the top surface of the slide rail sleeve 71, i.e., the top end of the linear guide rail 711 is open. The bottom end of the linear guide rail 711 communicates with the top end of the inclined guide rail 712, and the bottom end of the inclined guide rail 712 is sealed. The side walls on both sides of the inclined guide rail 712 extend axially, and the right side wall of the inclined guide rail 712 extends in the same direction as the right side wall of the linear guide rail 711. The top and bottom walls of the inclined guide rail 712 form an angle with the axial direction of the slide rail sleeve 71, causing the inclined guide rail 712 to tilt downwards to the left. The inclined guide rail 712 has a greater length in both the lateral and axial directions than the width of the linear guide rail 711 in the slide rail sleeve 71, allowing the lever pin 75 to slide sequentially on the right side wall, bottom wall, left side wall, and top wall of the inclined guide rail 712. Obviously, in other embodiments of the invention, the left side wall of the inclined guide rail 712 and the left side wall of the linear guide rail 711 may be in the same extending direction, in which case the inclined guide rail 712 is inclined downwards and to the right.

[0062] The top of the slide rail sleeve 71 is provided with a plurality of limiting grooves 713 evenly spaced. The two sides of the limiting grooves 713 are respectively provided with guide slopes 714. The slope of the guide slopes 714 is 30° to 60°. In this embodiment, the slope of the guide slopes 714 is 45°. The bottom width of the limiting grooves 713 is greater than the width of the linear guide rail 711.

[0063] The indexing fork 73 extends into the top of the slide rail sleeve 71 and slides in engagement with it. The indexing fork 73 has fork grooves 731 at its bottom end, the number and distribution of which are identical to the limiting grooves 713, forming multiple fork blocks 732, i.e., fork grooves 731 are formed between adjacent fork blocks 732. The inner side of the top of the indexing fork 73 has an inner ring groove 734, and the outer side of the top of the indexing fork 73 has an outer ring protrusion 733. The outer ring protrusion 733 extends into the limiting groove 713, ensuring that the bottom width of the limiting groove 713 > the width of the outer ring protrusion 733 > the width of the linear guide rail 711, thus preventing the outer ring protrusion 733 from entering the linear guide rail 711. When the outer ring protrusion 733 rotates, guided by the guide slope 714, the indexing fork 73 rotates while sliding within the slide rail sleeve 71 until the outer ring protrusion 733 disengages from the limiting groove 713. As rotation continues, the outer ring protrusion 733 enters the next limiting groove 713, achieving a fixed-angle rotation of the indexing fork 73. The angle of each rotation is:

[0064]

[0065] In this embodiment, there are two outer ring protrusions 733, which are set on the top of the indexing fork 73. In other embodiments of the present invention, the number of outer ring protrusions 733 can also be 1, 3, 4, 5, etc., as long as all outer ring protrusions 733 can cooperate with the limiting groove 713.

[0066] The lever 74 is located inside the slide rail sleeve 71. The bottom end of the lever 74 is symmetrically provided with lever pins 75, the number and distribution of which correspond to the guide rails. All lever pins 75 extend into their respective linear guide rails 711 and can slide within them. To ensure smooth sliding of the lever pins 75, the width of the linear guide rail 711 is greater than the diameter of the lever pins 75. The top of the lever 74 is provided with a lever block 741 with an arc-shaped outer surface. The lever block 741 extends into the indexing fork groove 731 and can slide within it. To prevent interference between the lever block 741 and the slide rail sleeve 71, the outer diameter of the lever block 741 is the same as the outer diameter of the indexing fork 73.

[0067] In this embodiment, the end face of the lever pin 75 is lower than or equal to the outer surface of the slide rail sleeve 71 to avoid interference between the lever pin 75 and other external structures; the outer diameter of the lever block 741 can also be smaller than the outer diameter of the indexing fork 73.

[0068] In this embodiment, there are two toggle blocks 741, which are located on the top of the lever 74. In other embodiments of the present invention, the number of toggle blocks 741 can be 1, 3, 4, 5, etc., as long as all toggle blocks 741 can cooperate with the toggle fork groove 731.

[0069] When the lever 74 moves downward, the lever block 741 separates from the fork groove 731. Under the guidance of the inclined guide rail 712, it can enter the next fork groove 731 and drive the indexing fork 73 to rotate, so that the outer ring protrusion 733 enters the next limiting groove 713, completing the fixed angle rotation of the indexing fork 73.

[0070] The bottom end of the pull rod 72 extends into the top of the lever 74 and is connected to the lever 74 through the lever pin 75. Specifically, the lever pin 75 is fixedly connected to the pull rod 72 (by welding, etc.), and the lever pin 75 enters the linear guide rail 711 after passing through the small hole of the lever 74.

[0071] Please refer to Figure 10 The connecting block 522 on the rotating block 521 extends into the inner ring groove 734 of the indexing fork 73 and can slide in the inner ring groove 734, so that the axial movement of the indexing fork 73 will not drive the rotating disk 52 to move in the axial direction, while the rotation of the indexing fork 73 will drive the rotation of the rotating disk 52. The top end of the pull rod 72 passes through the rotating block 521 and the rotating disk 52 in sequence and is connected to the external lifting structure, such as a gantry crane.

[0072] Please refer to Figure 2 A dust cover 76 is fitted on the outer side of the slide rail sleeve 71. The inner diameter of the dust cover 76 is larger than the outer diameter of the slide rail sleeve 71. The bottom end of the slide rail sleeve 71 is connected to the dust cover 76 by welding, and the top end of the dust cover 76 is fixedly connected to the bottom of the stabilizer plate 51 by welding. Therefore, the slide rail sleeve 71 is fixedly connected to the stabilizer plate 51 by the dust cover 76.

[0073] The fork-type fixed-angle rotation mechanism of the present invention is a purely mechanical mechanism that transforms the axial reciprocating motion of gravity downward and pulling force upward into the fixed-angle rotation of the indexing fork. Compared with the existing electric control method, it has a simple structure, small size, convenient use, maintenance and repair, low cost, high cost performance, and can greatly improve the service life in extreme and harsh environments such as high temperature and high humidity.

[0074] Example 2

[0075] This embodiment provides a method for transforming a mechanism based on the above-mentioned fixed-angle rotation into an axially discontinuous limiting mechanism, including the following steps:

[0076] S1: Pull rod 72, lever 74 and slide rod 56 move downward under the action of gravity, lever pin 75 slides downward in linear guide rail 711, and lever block 741 slides in fork groove 731 until lever block 741 disengages from fork groove 731. At this time, outer ring protrusion 733 is stuck in limit groove 713.

[0077] S2: Pull rod 72, lever 74 and slide rod 56 continue to move downward, lever pin 75 moves along linear guide rail 711 to the bottom side of inclined guide rail 712;

[0078] S3: Pull rod 72, lever 74 and slide rod 56 continue to move downwards, lever pin 75 moves along the bottom wall of inclined guide rail 712 to the lowest point of inclined guide rail 712, at which time pull rod 72 and lever 74 rotate, and the top of slide rod 56 enters the guide sleeve 55.

[0079] S4: Pull rod 72, lever 74 and slide rod 56 move upward, lever pin 75 moves vertically upward along inclined guide rail 712 until it contacts the top wall of inclined guide rail 712, driving lever block 741 into the next fork groove 731. At this time, the top of slide rod 56 is located inside the guide sleeve 55.

[0080] S5: Pull rod 72, lever 74 and slide rod 56 continue to move upward, lever pin 75 moves along the top wall of inclined guide rail 712, at this time pull rod 72 and lever 74 rotate accordingly, during the upward rotation of lever 74, it drives indexing fork 73 to rotate, so that outer ring protrusion 733 is squeezed out from limiting groove 713 under the guidance of guide inclined surface 714 and cooperates with the next limiting groove 713 under the action of gravity. At this time, rotating disk 52 rotates under the drive of indexing fork 73 and blocks through groove 53;

[0081] S6: Pull rod 72, lever 74 and slide rod 56 continue to move upward, lever pin 75 moves upward along linear guide rail 711, and the top of slide rod 56 contacts rotating disk 52, thereby axially and upwardly limiting slide rod 56 through rotating disk 52;

[0082] S7: Repeat steps S1 to S5, the outer ring protrusion 733 enters the next limiting groove 713, the rotating disk 52 rotates again, so that the through groove 53 corresponds to the through hole 54;

[0083] S8: Pull rod 72, lever 74 and slide rod 56 move upward, the top of slide rod 56 passes through hole 54, at this time slide rod 56 is released from the limit;

[0084] S9: Repeat steps S1 to S8 to transform the fixed-angle rotation into an axial intermittent limit.

[0085] This invention uses only gravity and upward pulling force to make the lever pin move along a set path, thereby transforming the axial reciprocating motion into a fixed-angle rotational motion of the indexing fork and the rotating disk. Ultimately, it enables the slide rod to alternately move upward in the axial direction and release the limit. The entire operation process is simple, convenient, and reliable.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanism for converting fixed-angle rotation into axial intermittent limiting, characterized in that, include: Axial discontinuous limiting mechanism (50) and fork-type fixed angle rotation mechanism (70); The axial intermittent limiting mechanism (50) includes: a stabilizing disk (51), a rotating disk (52), and multiple sets of sliding components; The rotating disk (52) is located on top of the stabilizing disk (51) and rotates in cooperation with the rotating disk (52); the stabilizing disk (51) and the rotating disk (52) are respectively provided with a number of through slots (53) and through holes (54) consistent with the number of sliding components. The sliding assembly includes a guide sleeve (55) and a slide rod (56); the guide sleeve (55) extends into the through groove (53) and is connected to the stabilizing disk (51); the slide rod (56) slides with the guide sleeve (55) and extends out through the through hole (54); The fork-type fixed-angle rotation mechanism (70) is fixedly connected to the stabilizing disk (51) and connected to the rotating disk (52). The fork-type fixed-angle rotation mechanism (70) drives the rotating disk (52) to rotate at a fixed angle, thereby intermittently limiting the slide rod (56) in the axial direction. The fork-type fixed-angle rotation mechanism (70) includes: slide rail sleeve (71), pull rod (72), indexing fork (73) and lever (74); The slide rail sleeve (71) is provided with a linear guide rail (711) and an inclined guide rail (712) sequentially from its top. The top end of the inclined guide rail (712) is connected to the bottom end of the linear guide rail (711). The axial length of the inclined guide rail (712) is greater than the width of the linear guide rail (711). The top of the slide rail sleeve (71) is also provided with a plurality of limiting grooves (713) evenly spaced. The indexing fork (73) is sleeved on the pull rod (72) and slides into the slide rail sleeve (71). The indexing fork (73) has fork grooves (731) from its bottom end, the number and distribution of which are the same as those of the limiting groove (713), forming multiple fork blocks (732). The outer side of the top of the indexing fork (73) is provided with an outer ring protrusion (733) that cooperates with the limiting groove (713). The lever (74) is sleeved on the bottom end of the pull rod (72) and connected to the pull rod (72) through the lever pin (75). The lever pin (75) is slidably engaged with the linear guide rail (711). The top end of the lever (74) extends into the interior of the indexing fork (73) and is provided with a lever block (741) that is slidably engaged with the fork groove (731). The slide rail sleeve (71) is fixedly connected to the bottom of the stabilizing disk (51), the indexing fork (73) is slidably engaged with the rotating disk (52) to drive the rotating disk (52) to rotate, and the pull rod (72) passes through the stabilizing disk (51) and the rotating disk (52).

2. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 1, characterized in that, The bottom width of the limiting groove (713) is greater than the width of the outer ring protrusion (733) and the width of the linear guide (711) and the diameter of the lever pin (75).

3. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 2, characterized in that, The limiting groove (713) is provided with guide slopes (714) on both sides, and the inclination angle of the guide slopes (714) is 30° to 60°.

4. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 1, characterized in that, The end face of the lever pin (75) is lower than or equal to the outer surface of the slide rail sleeve (71); the outer diameter of the lever block (741) is the same as the outer diameter of the indexing fork (73); a dust cover (76) is connected to the outside of the slide rail sleeve (71), and the dust cover (76) is fixedly connected to the bottom of the stabilizing plate (51).

5. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to any one of claims 1 to 4, characterized in that, Each of the slots (53) has a mounting ear (57) on both sides. The mounting ear (57) is located on the bottom side of the stabilizer (51). The mounting ear (57) of the same slot (53) is rotatably connected to the guide sleeve (55) through the guide sleeve pin (58).

6. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 5, characterized in that, The outer side of the stabilizing disk (51) is provided with a plurality of stabilizing disk ears (511). The stabilizing disk ears (511) are connected to a limiting roller (513) through a stabilizing disk ear pin (512). The limiting roller (513) contacts the rotating disk (52) and is used to limit the rotation of the rotating disk (52) along its central axis.

7. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 5, characterized in that, The rotating disk (52) has a rotating block (521) at the bottom center, and the rotating block (521) passes through the stabilizing disk (51); the rotating block (521) has a connecting block (522) on the outside, and the indexing fork (73) has an inner ring groove (734) on the top inner side that slides with the connecting block (522).

8. The mechanism for converting fixed-angle rotation into axial intermittent limiting according to claim 5, characterized in that, The mounting ear (57) is integrally formed with the stabilizing plate (51); the perforation (54) is a fan-shaped hole.

9. A method for transforming a mechanism based on any one of claims 1 to 8 into an axially discontinuous limiting mechanism, characterized in that, Includes the following steps: S1: The pull rod (72), lever (74) and slide rod (56) move downward under the action of gravity, the lever pin (75) slides downward in the linear guide rail (711), and the lever block (741) slides in the shift fork groove (731) until the lever block (741) disengages from the shift fork groove (731). At this time, the outer ring protrusion (733) is stuck in the limiting groove (713). S2: The pull rod (72), lever (74) and slide rod (56) continue to move downwards, and the lever pin (75) moves along the linear guide (711) to the bottom side of the inclined guide (712); S3: The pull rod (72), lever (74) and slide rod (56) continue to move downwards, and the lever pin (75) moves along the bottom wall of the inclined guide rail (712) to the lowest point of the inclined guide rail (712). At this time, the pull rod (72) and lever (74) rotate accordingly, and the top of the slide rod (56) enters the guide sleeve (55). S4: The pull rod (72), the lever (74) and the slide rod (56) move upward, and the lever pin (75) moves vertically upward along the inclined guide rail (712) until it contacts the top wall of the inclined guide rail (712), which drives the lever block (741) into the next lever fork groove (731). At this time, the top of the slide rod (56) is located inside the guide sleeve (55). S5: The pull rod (72), lever (74) and slide rod (56) continue to move upward, and the lever pin (75) moves along the top wall of the inclined guide rail (712). At this time, the pull rod (72) and lever (74) rotate accordingly. During the upward rotation of the lever (74), the indexing fork (73) is driven to rotate, so that the outer ring protrusion (733) is squeezed out from the limiting groove (713) and cooperates with the next limiting groove (713) under the action of gravity. At this time, the rotating disk (52) rotates under the drive of the indexing fork (73) and blocks the through groove (53). S6: The pull rod (72), lever (74) and slide rod (56) continue to move upward, the lever pin (75) moves upward along the linear guide rail (711), and the top of the slide rod (56) contacts the rotating disk (52), thereby axially and upwardly limiting the slide rod (56) through the rotating disk (52); S7: Repeat steps S1 to S5, at which point the slot (53) corresponds to the hole (54); S8: The pull rod (72), the lever (74) and the slide rod (56) move upward, and the top of the slide rod (56) passes through the through hole 54. At this time, the slide rod (56) is released from its limit. S9: Repeat steps S1 to S8 to convert the fixed-angle rotation into axial intermittent limiting.

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