Articulated combined linkage mechanism that converts fixed-axis rotation into multi-directional translation

Abstract

The present invention relates to the technical field of connecting rod mechanisms, and more particularly to an articulated combined connecting rod mechanism that converts fixed-axis rotation into multi-directional translation. The mechanism comprises multiple Sarrus connecting rod mechanisms sharing a common support frame and a rotating member. The rotating member is hinged to the support frame, and the movement of the multiple Sarrus connecting rod mechanisms is achieved through the rotation of the rotating member. By adjusting the layout of each connecting rod, linear translation of multiple rods in different directions can be achieved under the control of a single rotating member. This mechanism avoids the defects of moving pairs such as difficulty in sealing and easy jamming, and is reliable in operation, easy to maintain, and suitable for use in muddy and heavy-load environments.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting rod mechanisms, and in particular to an articulated combined connecting rod mechanism capable of converting fixed-axis rotation into multi-directional translation. Background Art

[0002] Moving joints are difficult to seal, and under heavy loads, they can easily become unevenly loaded and cause jamming. The Sarrus linkage, which articulates multiple links to achieve linear translation, is more suitable for heavy loads and harsh environments like muddy conditions. However, the Sarrus linkage can only achieve linear translation of a single link. Currently, there is no articulated, combined linkage mechanism that can convert a single fixed-axis rotation into linear translation of multiple links in different directions. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned technology and to provide an articulated combined link mechanism that converts fixed-axis rotation into multi-directional translation.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an articulated combined linkage mechanism that converts fixed-axis rotation into multi-directional translation, including multiple Sarrus linkage mechanisms that share a support frame and a rotating member. The rotating member is hinged to the support frame, and the movement of multiple Sarrus linkage mechanisms is realized by the rotation of the rotating member.

[0005] Preferably, the support frame limits the rotation range of the rotating member.

[0006] Preferably, the support frame has a plurality of limiting bosses, which are distributed around the axis of rotation of the rotating member relative to the support frame. The rotating member has limiting protrusions, which are located between adjacent limiting bosses, thereby limiting the rotation range of the rotating member relative to the support frame.

[0007] Preferably, it also includes multiple traction rods, multiple translation parts and multiple anti-rollover mechanisms; one end of the traction rod is hinged to the rotating part, and the other end is hinged to the translation part, and the translation part is also hinged to the anti-rollover mechanism; the support frame, the rotating part, the single traction rod, the single translation part and the single anti-rollover mechanism constitute a Sarus linkage mechanism, so that the translation part translates when the rotating part rotates, and the above multiple traction rods, multiple translation parts and multiple anti-rollover mechanisms and the support frame and the rotating part constitute multiple Sarus linkage mechanisms, so that the multiple translation parts all translate when the rotating part rotates.

[0008] Preferably, the anti-flip mechanism consists of a positioning base, a base connecting rod and a flat drag connecting rod, the positioning base is fixedly connected to the support frame; one end of the base connecting rod is hinged to the positioning base, the other end of the base connecting rod is hinged to one end of the flat drag connecting rod, and the other end of the flat drag connecting rod is hinged to the translation member.

[0009] Preferably, a pair of synchronous suspension rods are hingedly mounted on each translation member, and the gear teeth of the two synchronous suspension rods are meshed with each other to form a gear pair.

[0010] Preferably, it further comprises a support frame pull rod, which is hinged on the support frame.

[0011] Preferably, it also includes a suspension chain, which consists of a plurality of suspensions hinged in sequence. The suspensions on the suspension chain are hinged to the support frame pull rod and the synchronous suspension pull rod in sequence. By rotating the rotating part, the suspension chain can be completely straightened, generally bent or bent into an arc.

[0012] Preferably, the support frames are fixedly connected together via support frame connectors, and other components capable of relative movement with the support frames are connected together via synchronization components.

[0013] Preferably, the synchronization component is connected to the translation member.

[0014] Preferably, the translating member limits the rotation of the synchronous suspension link.

[0015] Preferably, a positioning pin is fixedly connected to the synchronous suspension pull rod, and the positioning pin is limited by the translation member structure.

[0016] Preferably, one of the synchronous suspension tie rods and the traction rod is coaxially hinged on the translation member.

[0017] The beneficial effects of the present invention are: by enabling multiple Saarus linkages to share a common support and rotating member, multiple rods can be linearly translated in different directions under the control of a single rotating member. This avoids defects such as poor sealing and easy jamming of moving pairs, resulting in reliable operation, easy maintenance, and applicability in muddy and heavy-load environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the present invention with a synchronous suspension rod and a support frame rod;

[0019] Figure 2 It is a structural diagram of the anti-flip mechanism of the present invention;

[0020] Figure 3 It is a structural diagram of a pair of synchronous suspension rods in the present invention;

[0021] Figure 4 is a perspective view of the traction rod connecting shaft of the present invention;

[0022] Figure 5 This is a diagram showing the relative positions of the limiting protrusion on the traction rod connecting shaft and two adjacent limiting protrusions on the support frame protrusion in the present invention;

[0023] Figure 6 It is a perspective view of the present invention;

[0024] Figure 7 This is a structural diagram of the present invention when the translation member rotates counterclockwise to the maximum position;

[0025] Figure 8 This is a structural diagram of the translation member during the rotation process of the rotation member in the present invention;

[0026] Figure 9 This is a structural diagram of the translation member in the present invention when the rotation member rotates clockwise to the maximum position;

[0027] Figure 10 It is a structural diagram of the suspension chain in the present invention;

[0028] Figure 11 This is a front view of the suspension chain bent into an arc in the present invention;

[0029] Figure 12 This is a front view of the suspension chain of the present invention, which is generally curved and close to an arc;

[0030] Figure 13 This is a front view of the suspension chain of the present invention, which is generally bent and nearly completely straightened;

[0031] Figure 14 This is a front view of the suspension chain of the present invention when it is fully straightened;

[0032] Figure 15 It is a three-dimensional diagram of the suspension chain bent into an arc after the two mechanisms are combined in the present invention;

[0033] Figure 16 This is a three-dimensional diagram showing that the suspension chain is generally curved and close to an arc after the two mechanisms are combined in the present invention;

[0034] Figure 17 This is a perspective view of the suspension chain in the present invention, which is generally bent and nearly completely straightened after the two mechanisms are combined;

[0035] Figure 18 It is a three-dimensional view of the suspension chain fully straightened after the two mechanisms are combined in the present invention;

[0036] Figure 19 This is a three-dimensional diagram of the present invention with one side support frame removed;

[0037] Figure 20 It is a schematic diagram of the combination of two mechanisms in the present invention;

[0038] Figure 21 It is a structural diagram of the synchronization component in the present invention;

[0039] Figure 22 is an exploded view of the synchronization component of the present invention;

[0040] Figure 23 yes Figure 22Cross-sectional view of the locating sleeve of the synchronous shaft;

[0041] In the figure: 1. rotating part; 2. traction rod; 3. traction rod connecting shaft; 4. translation part; 5. synchronous suspension rod; 6. anti-rollover mechanism; 7. support frame rod; 8. suspension chain; 81. suspension; 9. synchronization component; 10. positioning base; 11. base connecting rod; 12. flat towing connecting rod; 13. support frame; 14. synchronization shaft; 15. synchronization shaft positioning sleeve; 16. limiting protrusion; 17. support frame boss; 18. limiting boss; 19. positioning pin; 20. support frame connecting part. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixedly connected," and "fixed connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] An articulated combined linkage mechanism that converts fixed-axis rotation into multi-directional translation comprises a support frame, a rotating member, multiple traction rods, multiple translation members, and multiple anti-rollover mechanisms. The rotation member is hinged to the support frame and can rotate about a fixed axis L on the support frame. The traction rod is hinged at one end to the rotation member and at the other end to the translation member. The translation member is also hinged to the anti-rollover mechanism. The support frame, the rotating member, the single traction rod, the single translation member, and the single anti-rollover mechanism form a Sarrus linkage mechanism, which causes the translation member to perform linear translation when the rotating member rotates. The multiple traction rods, multiple translation members, and multiple anti-rollover mechanisms, together with the support frame and the rotating member, form multiple Sarrus linkage mechanisms, which cause the multiple translation members to perform linear translation when the rotating member rotates.

[0046] Take three groups as examples to explain in detail. Figure 1-Figure 2 As shown, three traction rods 2 are evenly installed on the rotating member 1, and each traction rod 2 is hinged to the rotating member 1 through a traction rod connecting shaft 3; three translation members 4 are respectively hinged to the corresponding traction rods 2, and at the same time, the end of the translation member 4 away from the traction rod 2 is hinged to the anti-flip mechanism 6.

[0047] like Figure 2 As shown, the anti-flip mechanism 6 is used to further restrict the freedom of movement of the translating member 4. It primarily comprises a positioning base 10, a base connecting rod 11, and a horizontal drag link 12. The positioning base 10 is fixedly attached to a support frame 13; one end of the base connecting rod 11 is hingedly connected to the positioning base 10; the other end of the base connecting rod 11 is hingedly connected to one end of the horizontal drag link 12, which in turn is hingedly connected to the translating member 4. The mounting relationship between the rotating member 1, the traction rod 2, the translating member 4, and the anti-flip mechanism 6 ensures that the translating member can only translate in a direction perpendicular to the rotating member's axis of rotation.

[0048] like Figure 4 and Figure 5 As shown, one end of the drawbar connecting shaft 3 has a limiting protrusion 16. After installation, the limiting protrusion 16 is located between two adjacent limiting protrusions 18 on the support bracket boss 17. During the rotation of the rotating member 1, the movement range of the limiting protrusion 16 is limited by the two adjacent limiting protrusions 18, thereby limiting the rotation range of the rotating member 1.

[0049] The rotation axis L of the rotating member and the translation axes A, B, and C of each translation member are as follows: Figure 6 As shown. When the rotating member 1 rotates clockwise, Figure 7-9 As shown, the three translation members 4 translate along the axes A, B and C respectively, gradually moving away from the axis L, and the axes A, B and C are all perpendicular to the rotation axis L of the rotating member. When the limiting protrusion 16 is attached to the limiting boss 18 of the support boss 17, the translation member 4 is farthest from the rotation axis L of the rotating member, as shown in FIG. Figure 9 shown.

[0050] When the rotating member 1 rotates counterclockwise, the three translation members 4 translate along the axes A, B and C respectively, gradually approaching the rotation axis L of the rotating member 1, until the limiting protrusion 16 fits against another adjacent limiting protrusion 18 of the support frame protrusion 17. At this time, the translation member 4 is closest to the rotation axis L of the rotating member, as shown in FIG. Figure 7 shown.

[0051] An articulated combined link mechanism that converts fixed-axis rotation into multi-directional translation also includes components such as a support frame pull rod, a synchronous suspension pull rod, and a suspension chain.

[0052] like Figure 1 and Figure 3 The support frame rods 7 shown are hinged to the support frame in pairs, and the hinge axes are parallel to the rotation axis L of the rotating member. A pair of synchronous suspension rods 5 are also hingedly mounted on each translation member 4, and the hinge axes are parallel to the rotation axis L of the rotating member. One of the synchronous suspension rods 5 is coaxially hinged with the traction rod 2. The synchronous suspension rod 5 has a gear tooth portion of an incomplete gear structure. The gear teeth of the two synchronous suspension rods 5 mesh with each other to form a gear pair. A positioning pin 19 is fixed to the synchronous suspension rod 5. The two meshed synchronous suspension rods 5 can rotate synchronously, and the rotation range is limited by the gear tooth range. When the positioning pin 19 moves with the synchronous suspension rod 5, it is limited by the limit hole structure on the translation member 4, which can also limit the relative rotation range of the two synchronous suspension rods 5.

[0053] like Figure 10 and Figure 11 As shown, the suspension chain 8 is composed of a plurality of suspensions 81 which are hinged in sequence. Figure 11 The black dots in the figure are the hinge points between the suspensions. Figures 11 to 14 As shown, the suspensions on the suspension chain are hinged to the support frame pull rod and the synchronous suspension pull rod in sequence. By rotating the rotating member, the suspension chain can be completely straightened, generally bent, or bent into an arc. Complete straightening means that the projections of the axes of the hinges on the suspension chain on the normal plane of the rotating member's rotation axis L are in a straight line, as shown in FIG. Figure 14 As shown; bending into an arc means that the projection of the axis of the suspension chain on the normal plane of the rotation axis L of the rotating part is on an arc, and the center of the arc coincides with the rotation axis L of the rotating part, as shown in FIG. Figure 11 As shown; general bending refers to the bending state of the suspension chain other than being completely straightened or bent into an arc, such as Figure 12 and 13 shown.

[0054] like Figure 19 and 20As shown, multiple articulated combined linkage mechanisms that convert fixed-axis rotation into multi-directional translation can be combined in the following manner: the support frames of the multiple mechanisms are fixedly connected together via a support frame connector 20, and other components capable of relative movement with the support frames are connected together via a synchronization assembly 9. The other components capable of relative movement with the support frames are the rotating member 1, the traction rod 2, the translation member 4, the base link 11, and the horizontal towing link 12. One or more groups of corresponding components of these types can be connected via the synchronization assembly.

[0055] Take the relative installation combination of two mechanisms as an example. Specifically, the support frame connecting member connects the two support frames so that the rotation axes of the two rotating parts are coaxial, and the synchronization component connects the two relative translation members 4 so that the two members translate synchronously, thereby synchronizing the rotation of the two rotating parts. Figure 20-23 As shown, the synchronization assembly consists of a synchronization shaft 14 and a synchronization shaft positioning sleeve 15. The synchronization shaft 14 is fixedly connected to the translating member 4, and the synchronization shaft positioning sleeve 15 is mounted on the synchronization shaft 14. After the support frame connector secures the two support frames together, the synchronization assembly connects the two opposing translating members 4. The synchronization assembly can more rationally apply force to the two opposing translating members 4, avoid unbalanced loading, and ensure smoother movement, thereby improving their load-bearing capacity.

[0056] The two mechanisms are relatively installed and combined to form a mechanism assembly. Looking from the middle of the mechanism assembly along the axis L toward the support frames on both sides, the rotating parts on both sides rotate synchronously clockwise, and the relatively connected translation parts translate synchronously. The effect is as follows: Figures 15 to 18 As shown, it is similar to the above single mechanism. Figure 15 As shown, the suspension chains on both sides are bent into an arc shape. At this time, the limiting protrusions 16 of the traction rod connecting shafts 3 on both sides are fitted into the limiting protrusions 18 of the corresponding support frame protrusions 17, and the translation member 4 is farthest from the rotation axis L of the rotating member; as the rotating member rotates synchronously clockwise, the suspension chains on both sides gradually stretch and present a general bending state, as shown in FIG. Figure 16 and 17 When the limiting protrusions 16 of the traction rod connecting shaft 3 on both sides are fitted to the other adjacent limiting protrusions 18 of the corresponding support frame boss 17, the translation member 4 is closest to the rotation axis L of the rotating member, and the suspension chains on both sides are completely straightened, as shown. Figure 18 The above process is also vice versa.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An articulated combined linkage mechanism that converts fixed-axis rotation into multi-directional translation, characterized by: The invention comprises a plurality of articulated link mechanisms sharing a support frame and a rotating member, wherein the rotating member is hingedly connected to the support frame; the non-shared portion of the link mechanism comprises a traction rod, a translation member, and an anti-flip mechanism; one end of the traction rod is hingedly connected to the rotating member, and the other end is hingedly connected to the translation member, and the translation member is also hingedly connected to the anti-flip mechanism, so that the translation member translates when the rotating member rotates. The combination of the above plurality of articulated link mechanisms causes the plurality of translation members to translate when the rotating member rotates; The anti-flip mechanism consists of a positioning base, a base connecting rod and a flat drag connecting rod. The positioning base is fixedly connected to the support frame; one end of the base connecting rod is hinged to the positioning base, the other end of the base connecting rod is hinged to one end of the flat drag connecting rod, and the other end of the flat drag connecting rod is hinged to the translation member.

2. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 1, characterized in that: The support frame limits the rotation range of the rotating member.

3. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 2, characterized in that: The support frame has a plurality of limiting bosses, which are distributed around the axis of rotation of the rotating member relative to the support frame. The rotating member has limiting protrusions, which are located between adjacent limiting bosses, thereby limiting the rotation range of the rotating member relative to the support frame.

4. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 1, characterized in that: A pair of synchronous suspension rods are hingedly mounted on each translation member, and the gear teeth of the two synchronous suspension rods are meshed with each other to form a gear pair.

5. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 1 or 4, characterized in that: It also includes a support frame pull rod, which is hinged on the support frame.

6. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 5, characterized in that: It also includes a suspension chain, which consists of multiple suspensions hinged in sequence. The suspensions on the suspension chain are hinged to the support frame pull rod and the synchronous suspension pull rod in sequence. By rotating the rotating part, the suspension chain can be completely straightened, generally bent or bent into an arc.

7. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 1 or 4, characterized in that: The support frames are fixedly connected together through support frame connectors, and other components capable of relative movement with the support frames are connected together through synchronization components.

8. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 7, characterized in that: The synchronization component is connected to the translation member.

9. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 5, characterized in that: The translating member limits the rotation of the synchronous suspension link.

10. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 9, characterized in that: A positioning pin is fixedly connected to the synchronous suspension pull rod, and the positioning pin is limited by the translation member structure.

11. The articulated combined linkage mechanism for converting fixed-axis rotation into multi-directional translation according to claim 5, characterized in that: One of the synchronous suspension tie rods and the traction rod is coaxially hinged on the translation member.

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