Stroke triggering limiting protection device based on rotation of more than 360 degrees
By introducing a stroke trigger structure with a spiral guide groove and a rotational follow-up function in the stroke switch device, the problem of limit protection for circular motions exceeding 360 degrees in the prior art is solved, and simple and stable limit protection and safe and controllable circular motions are achieved.
Patent Information
- Application Number
- CN202411599744.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-03-04
AI Technical Summary
Existing stroke switches are difficult to provide safe, stable and controllable limit protection for devices that move more than 360 degrees in a circular manner, mainly due to their complex control logic and prone to failures.
A stroke trigger limit protection device based on rotation of more than 360 degrees is designed, and a stroke trigger structure with spiral guide groove and rotation follow-up function is adopted. The linear motion trigger stroke switch is realized through the adaptive slide and limit cam, which simplifies control logic.
It realizes that in a unidirectional circular motion stroke exceeding 360 degrees, each stroke switch is triggered only once, without adding logic control. The system is simple and stable, and can provide safe limit protection, and avoid overshoot through mechanical limit protection when the stroke switch fails.
Smart Images

Figure CN119560322A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of travel limit protection, and in particular to a travel-triggered limit protection device based on a rotation of more than 360 degrees. Background Art
[0002] At present, in the field of mechanical equipment control, travel switches are a typical safety protection device, commonly used in linear motion or circular motion control less than 360 degrees, and are usually used as zero position or limit protection. At this time, each travel switch is only triggered once in a unidirectional motion stroke, which can achieve accurate positioning, and the logic control is relatively simple, so it is widely used to control the stroke and limit protection of mechanical equipment.
[0003] However, when the device performs a 360-degree circular motion, the travel switch is usually triggered at least twice. At this time, a more complex logic control of the travel switch is required. It is common to set the first trigger to zero position and the second trigger to limit position, and the rotational motion stops after the limit position is triggered. The control logic of the above two triggers is complex compared to that of one trigger. More importantly, under this complex control logic, the logic is still not applicable to circular motion exceeding 360 degrees. The main reason is that once the limit position is triggered, the rotational motion stops. Even if N triggers are set as limit positions, as the rotation angle continues to increase, the control logic of the first N-1 triggers will become more complex as the number of triggers increases, which not only brings high costs but also easily causes failures, making it difficult to limit protection for devices with circular motion exceeding 360 degrees, and it is impossible to achieve safe and controllable circular motion exceeding 360 degrees.
[0004] The Chinese invention patent with publication number CN204650285U discloses a turntable device and method with an angular position exceeding 360 degrees. However, this method requires a strict triggering sequence to trigger four limit travel switches in sequence and complex ignore and reverse latch logic. The structure and control are relatively complex. Once one of the limit travel switches fails or has a logical error, it is impossible to complete a circular motion exceeding 360 degrees.
[0005] It can be seen that due to the control logic limitations and failure risks brought about by the complexity of existing limit switches, it is difficult for limit switches to provide effective and stable limit protection for devices with circular motion exceeding 360 degrees. Summary of the invention
[0006] To this end, the present invention provides a travel-triggered limit protection device based on a rotation of more than 360 degrees to solve the technical problem that the travel switch mechanism in the prior art has control logic limitations and complexity, resulting in difficulty in providing safe, stable and controllable limit protection for circular motion devices exceeding 360 degrees.
[0007] In order to achieve the above object, the present invention provides the following technical solutions:
[0008] A travel-triggered limit protection device based on a rotation of more than 360 degrees, comprising:
[0009] A rotary drive assembly structure having a rotary kinetic energy output end;
[0010] The transfer guide structure is provided with a spiral guide groove for positioning;
[0011] The travel trigger structure comprises a mounting base body and an adaptive slide seat sliding on the mounting base body;
[0012] The mounting base body is transmission-connected with the rotational kinetic energy output end of the rotation drive assembly structure, the adaptive slide is correspondingly assembled in the spiral guide groove, and when the mounting base body performs circular motion based on the rotational kinetic energy, the adaptive slide can adaptively shift along the spiral guide groove, and the adaptive slide can perform linear motion based on the mounting base body;
[0013] The travel switch assembly structure includes a zero position travel switch and a limit position travel switch;
[0014] Two of the points where the adaptive slide performs linear motion correspond one-to-one to the zero-position travel switch and the limit travel switch to form a signal triggering effect.
[0015] On the basis of the above technical solution, the present invention is further described as follows:
[0016] As a further embodiment of the present invention,
[0017] The transfer guide structure includes a positioning plate and a spiral guide groove;
[0018] The positioning plate is fixedly assembled and connected to the base of the rotation drive assembly structure;
[0019] The spiral guide groove is spirally opened on the positioning plate body, and the spiral track of the spiral guide groove is arranged corresponding to the rotation track of the rotational kinetic energy output end of the rotation drive component structure.
[0020] As a further embodiment of the present invention,
[0021] The spiral guide groove has a guide starting end and a guide ending end at its two ends respectively, and the guide groove path between the guide starting end and the guide ending end has a spiral overlapping part, so that the spiral guide groove forms a spiral guide track with a circular motion of more than 360°.
[0022] As a further embodiment of the present invention,
[0023] The travel trigger structure also includes a guide optical axis and a limit cam;
[0024] The guide light axes are provided with a plurality of guide light axes, and the plurality of guide light axes are fixedly assembled on the mounting base body through elastic retaining rings;
[0025] The adaptive slide is slidably mounted on a plurality of the guide optical axes through linear bearings, and the adaptive slide can perform reciprocating linear motion along the guide optical axes;
[0026] The limit cam adapter is arranged on a side of the adaptive slide facing away from the mounting base body, and the limit cam extends to the spiral guide groove, and the outer wall surface of the limit cam and the inner wall surface of the spiral guide groove always maintain matching contact. When the mounting base body drives the limit cam to move synchronously based on its own rotational kinetic energy, the limit cam can continue to synchronously perform spiral guide displacement along the spiral guide groove. At this time, the relative position of the limit cam will gradually shift linearly based on the sliding action of the adaptive slide along the guide light axis, thereby forming a rotational follow-up function, which converts the rotational motion of the mounting base body into the linear motion of the limit cam and the adaptive slide.
[0027] As a further embodiment of the present invention,
[0028] The travel trigger structure also includes a travel trigger baffle;
[0029] One end of the travel trigger baffle is transmission-assembled on the adaptive slide, and the other end of the travel trigger baffle is extended to the outer side of the adaptive slide, the travel trigger baffle can move linearly synchronously with the adaptive slide, and two points where the travel trigger baffle makes linear motion correspond one-to-one with the zero-position travel switch and the limit travel switch to form a signal triggering effect.
[0030] As a further embodiment of the present invention,
[0031] The travel switch assembly structure includes a first zero-position travel switch and a first limit travel switch;
[0032] The first zero position travel switch and the first limit travel switch are respectively fixedly mounted on the rotational kinetic energy output end of the rotation drive assembly structure, and the connection path between the first zero position travel switch and the first limit travel switch is maintained parallel to the extension path of the guide light axis;
[0033] When the limit cam moves from the zero position set by the spiral guide groove to the limit position, the linear movement distance of the stroke trigger baffle is equal to the set spacing between the first zero position travel switch and the first limit travel switch, and when the limit cam is located at the zero position set by the spiral guide groove, the stroke trigger baffle correspondingly triggers the first zero position travel switch, and when the limit cam is located at the limit position set by the spiral guide groove, the stroke trigger baffle correspondingly triggers the first limit travel switch, and the stroke trigger baffle sequentially completes a circular motion of more than 360 degrees and safety limit protection with the first zero position travel switch and the first limit travel switch trigger signal limiting action.
[0034] As a further embodiment of the present invention,
[0035] The travel switch assembly structure includes a second zero-position travel switch and a second limit travel switch;
[0036] The second zero-position travel switch and the second limit travel switch are respectively fixedly connected to the positioning plate body, and when the limit cam is located at the zero position set by the spiral guide groove, the travel trigger baffle correspondingly triggers the second zero-position travel switch, and when the limit cam moves from the zero position set by the spiral guide groove to the limit position, the travel trigger baffle correspondingly triggers the second limit travel switch after moving along a straight line, and the travel trigger baffle sequentially completes a circular motion of more than 360 degrees and safety limit protection with the second zero-position travel switch and the second limit travel switch trigger signal limiting action.
[0037] As a further solution of the present invention, it also includes: a mechanical limiting mechanism;
[0038] The spiral guide groove is provided with mechanical limit protection zones along its extension path close to the guide starting end and the guide ending end;
[0039] The mechanical limiting mechanism is correspondingly assembled and arranged in the mechanical limiting protection zone.
[0040] As a further embodiment of the present invention,
[0041] The travel trigger structure also includes a mechanical limit protection block;
[0042] The mechanical limit protection blocks are provided with two groups, and the two groups of mechanical limit protection blocks are respectively fixedly connected to the adaptive slide, and the two groups of mechanical limit protection blocks are respectively and one by one located at the two sides of the limit cam along its spiral guide displacement direction. When the mechanical limit protection is triggered, the mechanical limit impact force is borne by the mechanical limit protection blocks instead of the limit cam.
[0043] As a further embodiment of the present invention,
[0044] The rotary drive assembly structure includes a positioning base structure, a rotary bearing structure and a rotary platform structure;
[0045] The base of the rotary bearing structure is fixedly mounted on the positioning base structure, and the rotary kinetic energy output end of the rotary bearing structure is transmission-fixedly connected to the rotary platform structure;
[0046] A trigger assembly portion is extended from one side of the rotating platform structure, and the trigger assembly portion is arranged in transmission connection with the mounting base body as a rotational kinetic energy output end of the rotating drive assembly structure.
[0047] The present invention has the following beneficial effects:
[0048] 1. The device is designed with a transfer guide structure with a spiral guide groove, so that in a one-way circular motion of more than 360 degrees, each travel switch is triggered only once, without adding additional logic control, so that the zero position limit function is realized by simple logic, and the circular motion of more than 360 degrees is completed accurately;
[0049] 2. The device is designed with a travel trigger structure with a rotation follow-up function, which, in conjunction with a transfer guide structure, can effectively convert the circular motion of the device exceeding 360 degrees into the linear motion of the travel trigger structure, thereby further realizing the use of linear motion to trigger the travel switch in the unidirectional circular motion exceeding 360 degrees. At the same time, the travel switch passed by the linear motion is only triggered once, without a strict triggering sequence. The system and control logic are simple, and stable, safe and controllable circular motion exceeding 360 degrees can be achieved;
[0050] 3. The transfer guide structure and stroke trigger structure designed in this device can realize more than 360-degree circular motion and provide safety limit protection by using two stroke switches. In addition, even if the stroke switch fails, the mechanical limit protection function of the transfer guide structure can still effectively protect the device to avoid damage to the device caused by overshoot, without affecting the circular motion of more than 360 degrees, thereby improving the overall functional stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0051] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for the implementation mode or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0052] Figure 1 This is a schematic diagram of the overall axonometric structure of a travel-triggered limit protection device based on a rotation of more than 360 degrees provided in Example 1 of the present invention.
[0053] Figure 2 A schematic diagram of the assembly structure of the travel trigger structure, the travel switch assembly structure and the indexing guide structure in the travel trigger limit protection device based on rotation of more than 360 degrees provided in Example 1 of the present invention.
[0054] Figure 3 This is a schematic diagram of the overall structure of the transfer guide structure in the stroke-triggered limit protection device based on more than 360-degree rotation provided in Example 1 of the present invention.
[0055] Figure 4 A schematic diagram of the partial structure of the travel trigger structure and the travel switch assembly structure corresponding to the indexing guide structure in the travel trigger limit protection device based on rotation of more than 360 degrees provided in Example 1 of the present invention.
[0056] Figure 5 This is a schematic diagram of the overall structure of a stroke trigger structure in a stroke trigger limit protection device based on rotation of more than 360 degrees provided in Example 1 of the present invention.
[0057] Figure 6 This is a schematic diagram of the internal structure of a travel trigger structure in a travel trigger limit protection device based on rotation of more than 360 degrees provided in Example 1 of the present invention.
[0058] Figure 7 A state principle diagram of the travel trigger structure and the travel switch assembly structure corresponding to the indexing guide structure in the travel trigger limit protection device based on rotation of more than 360 degrees provided in Example 1 of the present invention.
[0059] Figure 8 One of the schematic diagrams of the state changes of the travel trigger structure and the travel switch assembly structure before and after operation in the travel trigger limit protection device based on more than 360-degree rotation provided in Example 1 of the present invention.
[0060] Fig. 9 The second schematic diagram of the state change of the travel trigger structure and the travel switch assembly structure before and after operation in the travel trigger limit protection device based on more than 360 degrees rotation provided in Example 1 of the present invention.
[0061] Fig.10 The third schematic diagram of the state change of the travel trigger structure and the travel switch assembly structure before and after operation in the travel trigger limit protection device based on more than 360-degree rotation provided in Example 1 of the present invention.
[0062] Fig.11A schematic diagram of the mechanical limit protection area of the transfer guide structure corresponding to the stroke-triggered limit protection device based on a rotation of more than 360 degrees provided in Example 1 of the present invention.
[0063] Fig.12 A schematic diagram of the optional angle structure of the transfer guide structure in the stroke-triggered limit protection device based on a rotation of more than 360 degrees provided in Example 1 of the present invention.
[0064] Fig.13 This is a schematic diagram of the axonometric structure of a travel-triggered limit protection device based on a rotation of more than 360 degrees provided in Example 2 of the present invention.
[0065] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0066] Positioning base structure 1; Rotating bearing structure 2;
[0067] Rotating platform structure 3, trigger assembly part 31;
[0068] The indexing guide structure 4 includes a positioning plate 41, a spiral guide groove 42, a guide start end 421, and a guide end 422;
[0069] The travel trigger structure 5 includes a mounting base 51, a guide light axis 52, an adaptive slide 53, a linear bearing 54, a limit cam 55, a travel trigger baffle 56, and a mechanical limit protection block 57;
[0070] The travel switch assembly structure 6 includes a first zero-position travel switch 61 , a first limit travel switch 62 , a second zero-position travel switch 63 , and a second limit travel switch 64 . DETAILED DESCRIPTION
[0071] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0072] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.
[0073] Example 1
[0074] like Figures 1 to 12As shown, an embodiment of the present invention provides a stroke trigger limit protection device based on rotation of more than 360 degrees, including a positioning base structure 1, a rotating bearing structure 2, a rotating platform structure 3, a transfer guide structure 4, a stroke trigger structure 5 and a stroke switch assembly structure 6, which are used to effectively output rotational kinetic energy through the positioning base structure 1, the rotating bearing structure 2 and the rotating platform structure 3, and drive the base of the stroke trigger structure 5 and the stroke switch assembly structure 6 to rotate. At the same time, the transfer guide structure 4 can be used to effectively form a spiral guide track corresponding to the stroke trigger end of the stroke trigger structure 5, so that the stroke trigger end of the stroke trigger structure 5 can effectively convert the rotational motion into linear motion by means of its rotation follow-up function, and can further trigger the stroke limit protection corresponding to the stroke switch assembly structure 6 by means of the linear motion of the stroke trigger end of the stroke trigger structure 5, thereby achieving the goal of setting at least two stroke switches based on the stroke switch assembly structure 6 to stably complete the circular motion of more than 360 degrees and provide safety limit protection, and each stroke switch is only triggered once, without a strict triggering sequence, the overall system and control logic are simple, the operating cost is low, and the functional practicality is improved. The specific settings are as follows:
[0075] Please refer to Figure 1 The positioning base structure 1 can effectively serve as the positioning installation foundation of the entire device. The base part of the rotating bearing structure 2 is fixedly assembled on the positioning base structure 1, and the rotational kinetic energy output end of the rotating bearing structure 2 is transmission-fixedly connected to the rotating platform structure 3. A trigger assembly part 31 is extended from one side of the rotating platform structure 3 to serve as the installation foundation of the travel trigger structure 5 and the travel switch assembly structure 6 through the trigger assembly part 31.
[0076] Please refer to Figure 2 and Figure 3 The transfer guide structure 4 includes a positioning plate body 41 and a spiral guide groove 42; wherein the positioning plate body 41 is fixedly assembled with the positioning base structure 1; the spiral guide groove 42 is spirally opened on the positioning plate body 41, and the spiral trajectory of the spiral guide groove 42 is arranged corresponding to the rotation trajectory of the trigger assembly part 31, so that the travel trigger end of the travel trigger structure 5 can be correspondingly limited and assembled in the spiral guide groove 42; the spiral guide groove 42 has a guide starting end 421 and a guide ending end 422 at its two ends respectively, and the guide groove path between the guide starting end 421 and the guide ending end 422 has a spiral overlapping part, so that the spiral guide groove 42 forms a spiral guide track with a circular motion exceeding 360°.
[0077] Please refer to Figures 4 to 10The travel trigger structure 5 includes a mounting base body 51, a guide light axis 52, an adaptive slide 53, a linear bearing 54, a limit cam 55 and a travel trigger baffle 56; wherein the mounting base body 51 as the base part of the travel trigger structure 5 is transmission-fixedly assembled on the trigger assembly part 31, so that the mounting base body 51 can rotate synchronously with the trigger assembly part 31; the guide light axis 52 is provided with a plurality of, and the plurality of guide light axes 52 are fixedly assembled on the mounting base body 51 through elastic retaining rings, and the adaptive slide 53 is slidingly assembled on the plurality of guide light axes 52 through the linear bearing 54, so that the adaptive slide 53 can reciprocate linearly along the guide light axis 52; the limit cam 55 and the travel trigger baffle 56 together constitute the travel trigger end of the travel trigger structure 5, and the limit cam 55 is transfer-assembled on a side of the adaptive slide 53 facing away from the mounting base body 51, The limit cam 55 extends to the spiral guide groove 42, and the outer wall surface of the limit cam 55 and the inner wall surface of the spiral guide groove 42 always maintain matching contact, so as to realize that when the mounting base body 51 drives the limit cam 55 to move synchronously based on its own rotational kinetic energy, the limit cam 55 can continue to synchronously perform spiral guide displacement along the spiral guide groove 42. At this time, the relative position of the limit cam 55 will gradually maintain a linear displacement inward based on the sliding action of the adaptive slide 53 along the guide light axis 52, thereby enabling the limit cam 55 to form a rotation follow-up function and effectively convert the rotational movement of the mounting base body 51 into a linear movement of the limit cam 55 and the adaptive slide 53; one end of the travel trigger baffle 56 is transmission-fixedly assembled on the adaptive slide 53, and the other end of the travel trigger baffle 56 is extended to the outer side of the adaptive slide 53, so that the travel trigger baffle 56 can move synchronously with the adaptive slide 53 in a linear manner.
[0078] Please continue to refer to Figure 4 , Figure 7 and Figure 8, the travel switch assembly structure 6 includes a first zero-position travel switch 61 and a first limit travel switch 62; specifically, the first zero-position travel switch 61 and the first limit travel switch 62 are respectively fixedly mounted on the trigger assembly part 31 of the rotating platform structure 3, and the connection path between the first zero-position travel switch 61 and the first limit travel switch 62 is maintained parallel to the extension path of the guide light axis 52; when the limit cam 55 moves from the zero position set by the spiral guide groove 42 to the limit position, the linear movement distance of the travel trigger baffle 56 is equal to the set spacing between the first zero-position travel switch 61 and the first limit travel switch 62, and at the When the limit cam 55 is located at the zero position set by the spiral guide groove 42, the stroke trigger baffle 56 correspondingly triggers the first zero position stroke switch 61. When the limit cam 55 is located at the limit position set by the spiral guide groove 42, the stroke trigger baffle 56 correspondingly triggers the first limit stroke switch 62. The above-mentioned setting is used to realize the triggering signal limiting effect between the stroke trigger baffle 56 and the first zero position stroke switch 61 and the first limit stroke switch 62 in sequence. The two sets of stroke switches can realize circular motion that is not restricted by the rotation angle, and can effectively complete a circular motion of more than 360 degrees from the zero position to the limit position of the circular motion of the device and provide safety limit protection.
[0079] As a preferred solution of this embodiment, please refer to Fig.11 The spiral guide groove 42 is provided with a mechanical limit protection zone a along its extension path close to the guide starting end 421 and the guide ending end 422, so as to further assemble a mechanical limit mechanism through the mechanical limit protection zone a, so that when the travel switch fails, the mechanical limit mechanism can effectively protect the device from overshooting and external force damage, thereby ensuring the functional stability and safety of the device in a circular motion of more than 360 degrees.
[0080] More preferably, the travel trigger structure 5 also includes a mechanical limit protection block 57, and the mechanical limit protection block 57 is provided with two groups. The two groups of mechanical limit protection blocks 57 are respectively fixedly connected to the adaptive slide 53, and the two groups of mechanical limit protection blocks 57 are respectively and one by one located on both sides of the limit cam 55 along its spiral guide displacement direction, so that when the mechanical limit protection is triggered, the mechanical limit protection block 57 replaces the limit cam 55 to bear the mechanical limit impact force, thereby enhancing the protection performance of the limit cam 55 and ensuring the subsequent movement accuracy of the limit cam 55.
[0081] Please note that, please refer to Fig.12The angle of the spiral guide groove 42 can be adjusted according to the design requirements. Specifically, the outer diameter of the positioning plate 41 can be adjusted to achieve the setting of the spiral guide groove 42 at any angle. In addition, the number of travel switches can be increased according to actual requirements, such as 3 or more.
[0082] Example 2
[0083] In Example 2, the same symbols are given to the same structures as in Example 1, and the same description is omitted. The difference between Example 2 and Example 1 is that please refer to Fig.13 The travel switch assembly structure 6 includes a second zero-position travel switch 63 and a second limit travel switch 64, the second zero-position travel switch 63 and the second limit travel switch 64 are respectively fixedly arranged on the positioning plate body 41, and when the limit cam 55 is located at the zero position set by the spiral guide groove 42, the travel trigger baffle 56 correspondingly triggers the second zero-position travel switch 63, and when the limit cam 55 moves from the zero position set by the spiral guide groove 42 to the limit position, the travel trigger baffle 56 correspondingly triggers the second limit travel switch 64 after moving along a straight line, so as to realize the limit function of triggering the signal between the travel trigger baffle 56 and the second zero-position travel switch 63 and the second limit travel switch 64 in sequence, and the two sets of travel switches can realize the circular motion not limited by the rotation angle, thereby also being able to complete a circular motion of more than 360 degrees from the zero position to the limit position of the circular motion of the device and provide safety limit protection.
[0084] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.
Claims
1. A travel-triggered limit protection device based on a rotation of more than 360 degrees, characterized in that: include: A rotary drive assembly structure having a rotary kinetic energy output end; The transfer guide structure is provided with a spiral guide groove for positioning; The travel trigger structure comprises a mounting base body and an adaptive slide seat sliding on the mounting base body; The mounting base body is transmission-connected with the rotational kinetic energy output end of the rotation drive assembly structure, the adaptive slide is correspondingly assembled in the spiral guide groove, and when the mounting base body performs circular motion based on the rotational kinetic energy, the adaptive slide can adaptively shift along the spiral guide groove, and the adaptive slide can perform linear motion based on the mounting base body; The travel switch assembly structure includes a zero position travel switch and a limit position travel switch; Two of the points where the adaptive slide performs linear motion correspond one-to-one to the zero-position travel switch and the limit travel switch to form a signal triggering effect.
2. The limit protection device based on a stroke triggering a rotation exceeding 360 degrees according to claim 1, characterized in that: The transfer guide structure includes a positioning plate and a spiral guide groove; The positioning plate is fixedly assembled and connected to the base of the rotation drive assembly structure; The spiral guide groove is spirally opened on the positioning plate body, and the spiral track of the spiral guide groove is arranged corresponding to the rotation track of the rotational kinetic energy output end of the rotation drive component structure.
3. The travel-triggered limit protection device based on rotation exceeding 360 degrees according to claim 2, characterized in that: The spiral guide groove has a guide starting end and a guide ending end at its two ends respectively, and the guide groove path between the guide starting end and the guide ending end has a spiral overlapping part, so that the spiral guide groove forms a spiral guide track with a circular motion of more than 360°.
4. The limit protection device based on a stroke triggering a rotation exceeding 360 degrees according to claim 3, characterized in that: The travel trigger structure also includes a guide optical axis and a limit cam; The guide light axes are provided with a plurality of guide light axes, and the plurality of guide light axes are fixedly assembled on the mounting base body through elastic retaining rings; The adaptive slide is slidably mounted on a plurality of the guide optical axes through linear bearings, and the adaptive slide can perform reciprocating linear motion along the guide optical axes; The limit cam adapter is arranged on a side of the adaptive slide facing away from the mounting base body, and the limit cam extends to the spiral guide groove, and the outer wall surface of the limit cam and the inner wall surface of the spiral guide groove always maintain matching contact. When the mounting base body drives the limit cam to move synchronously based on its own rotational kinetic energy, the limit cam can continue to synchronously perform spiral guide displacement along the spiral guide groove. At this time, the relative position of the limit cam will gradually shift linearly based on the sliding action of the adaptive slide along the guide light axis, thereby forming a rotational follow-up function, which converts the rotational motion of the mounting base body into the linear motion of the limit cam and the adaptive slide.
5. The travel-triggered limit protection device based on rotation exceeding 360 degrees according to claim 4, characterized in that: The travel trigger structure also includes a travel trigger baffle; One end of the travel trigger baffle is transmission-assembled on the adaptive slide, and the other end of the travel trigger baffle is extended to the outer side of the adaptive slide, the travel trigger baffle can move linearly synchronously with the adaptive slide, and two points where the travel trigger baffle makes linear motion correspond one-to-one with the zero-position travel switch and the limit travel switch to form a signal triggering effect.
6. The limit protection device based on a stroke triggering a rotation exceeding 360 degrees according to claim 5, characterized in that: The travel switch assembly structure includes a first zero-position travel switch and a first limit travel switch; The first zero position travel switch and the first limit travel switch are respectively fixedly mounted on the rotational kinetic energy output end of the rotation drive assembly structure, and the connection path between the first zero position travel switch and the first limit travel switch is maintained parallel to the extension path of the guide light axis; When the limit cam moves from the zero position set by the spiral guide groove to the limit position, the linear movement distance of the stroke trigger baffle is equal to the set spacing between the first zero position travel switch and the first limit travel switch, and when the limit cam is located at the zero position set by the spiral guide groove, the stroke trigger baffle correspondingly triggers the first zero position travel switch, and when the limit cam is located at the limit position set by the spiral guide groove, the stroke trigger baffle correspondingly triggers the first limit travel switch, and the stroke trigger baffle sequentially completes a circular motion of more than 360 degrees and safety limit protection with the first zero position travel switch and the first limit travel switch trigger signal limiting action.
7. The limit protection device based on a stroke triggering a rotation exceeding 360 degrees according to claim 5, characterized in that: The travel switch assembly structure includes a second zero-position travel switch and a second limit travel switch; The second zero-position travel switch and the second limit travel switch are respectively fixedly connected to the positioning plate body, and when the limit cam is located at the zero position set by the spiral guide groove, the travel trigger baffle correspondingly triggers the second zero-position travel switch, and when the limit cam moves from the zero position set by the spiral guide groove to the limit position, the travel trigger baffle correspondingly triggers the second limit travel switch after moving along a straight line, and the travel trigger baffle sequentially completes a circular motion of more than 360 degrees and safety limit protection with the second zero-position travel switch and the second limit travel switch trigger signal limiting action.
8. The limit protection device based on a stroke triggering a rotation exceeding 360 degrees according to claim 4, characterized in that: Also includes: Mechanical limit mechanism; The spiral guide groove is provided with mechanical limit protection zones along its extension path close to the guide starting end and the guide ending end; The mechanical limiting mechanism is correspondingly assembled and arranged in the mechanical limiting protection zone.
9. The travel-triggered limit protection device based on rotation exceeding 360 degrees according to claim 8, characterized in that: The travel trigger structure also includes a mechanical limit protection block; The mechanical limit protection blocks are provided with two groups, and the two groups of mechanical limit protection blocks are respectively fixedly connected to the adaptive slide, and the two groups of mechanical limit protection blocks are respectively and one by one located at the two sides of the limit cam along its spiral guide displacement direction. When the mechanical limit protection is triggered, the mechanical limit impact force is borne by the mechanical limit protection blocks instead of the limit cam.
10. The travel-triggered limit protection device based on rotation exceeding 360 degrees according to claim 1, characterized in that: The rotary drive assembly structure comprises a positioning base structure, a rotary bearing structure and a rotary platform structure; The base of the rotary bearing structure is fixedly mounted on the positioning base structure, and the rotary kinetic energy output end of the rotary bearing structure is transmission-fixedly connected to the rotary platform structure; A trigger assembly portion is extended from one side of the rotating platform structure, and the trigger assembly portion is arranged in transmission connection with the mounting base body as a rotational kinetic energy output end of the rotating drive assembly structure.
Citation Information
Patent Citations
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CN204650285U
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