CN109050995B - Push-and-pull fixing mechanism - Google Patents
Push-and-pull fixing mechanism Download PDFInfo
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- CN109050995B CN109050995B CN201810974605.9A CN201810974605A CN109050995B CN 109050995 B CN109050995 B CN 109050995B CN 201810974605 A CN201810974605 A CN 201810974605A CN 109050995 B CN109050995 B CN 109050995B
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- pull rod
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- rod assembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G4/00—Tools specially adapted for use in space
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Abstract
The invention provides a push-pull fixing mechanism which comprises a supporting main body, wherein a push rod groove is formed in the supporting main body; one end of the push rod component is assembled in the push rod groove, and the other end of the push rod component is a first function end; one end of the at least one pull rod assembly is assembled in the support main body, and the other end of the at least one pull rod assembly is a second functional end; the push rod assembly and the at least one pull rod assembly are arranged in parallel. According to the push-pull fixing mechanism, the two mechanisms are connected through the supporting main body, the push rod assembly and the pull rod assembly, when the push-pull fixing mechanism is used, the second functional end of the pull rod assembly is fixed, and the push rod assembly is adjusted and fixed through a special tool, so that a stable push-pull structure is formed, sufficient supporting force can be provided for a mechanism to be connected, the bearing requirement of the mechanism to be connected is ensured, the requirement of protruding a certain length can be met, and adjustment and maintenance are facilitated; when not in use, the push rod assembly and the pull rod assembly are contracted in the support main body, and the occupied space is small.
Description
Technical Field
The invention relates to the technical field of mechanical assemblies, in particular to a push-pull fixing mechanism.
Background
The design of the on-line maintenance, debugging and operation cabinet is to design a universal on-orbit maintenance, debugging and operation system under an experiment cabinet frame, meet the common requirements of space on-orbit maintenance, debugging and scientific experiment projects which are acquired at present, namely maintenance, debugging, operation and diagnosis detection means, meet the individual requirements of the on-orbit maintenance, debugging and scientific experiment projects at present and for a period of time (ten years on the orbit) in the future through a replaceable experiment unit standardized by an external interface, and meet the requirements of long-term use in the future through on-orbit replacement and upgrade. Because the space inside the space experiment cabinet is limited, the requirement can be met only through reasonable design.
In order to achieve the purpose of online maintenance and adjustment, a maintenance platform is required to be arranged in the operation cabinet, and a fixing mechanism for fixing the maintenance platform is designed in a matching way, so that the maintenance platform is supported and fixed when working; but because the space in the operation cabinet is limited and the maintenance platform needs enough stability when in use; therefore, it is necessary to design a fixing mechanism for use in a limited space, so as to satisfy the operation functions of the maintenance platform and the operation cabinet.
Disclosure of Invention
The present invention is directed to a push-pull fixing mechanism, which solves at least one of the above problems.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a push-pull retention mechanism, comprising:
the supporting body is provided with a push rod groove;
one end of the push rod component is assembled in the push rod groove, and the other end of the push rod component is a first functional end;
one end of the at least one pull rod assembly is assembled in the support main body, and the other end of the at least one pull rod assembly is a second functional end;
the push rod assembly and the at least one pull rod assembly are arranged in parallel.
The invention has the beneficial effects that: according to the push-pull fixing mechanism, the two mechanisms are connected through the supporting main body, the push rod assembly and the pull rod assembly, when the push-pull fixing mechanism is used, the second functional end of the pull rod assembly is fixed, and the push rod assembly is adjusted and fixed through a special tool, so that a stable push-pull structure is formed, enough supporting force can be provided for a mechanism to be connected, the bearing requirement of the mechanism to be connected is ensured, the requirement of protruding a certain length can be met, and adjustment and maintenance are facilitated; when not in use, the push rod assembly and the pull rod assembly are contracted in the support main body, and the occupied space is small.
On the basis of the above technical solution, the following further technical solution can also be adopted.
Further, the drawbar assembly includes:
the pull rod sleeve is assembled in the support main body, and a top guide groove is formed in one end, far away from the second function end, of the pull rod sleeve;
the upper end of the pull rod is provided with a first guide raised head which is used for being clamped with the top guide groove, so that the pull rod assembly is in a contraction state, and the lower end of the pull rod is integrally connected with the second function end.
The beneficial effect of adopting the further scheme is that: because the first guiding raised head is arranged at one end of the pull rod, when the first guiding raised head is clamped with the top guide groove, the pull rod assembly is in a contraction state; when the first guide raised head is disengaged from the top guide groove, the pull rod assembly is in a stretching state; the top guide groove and the first guide raised head are clamped and fixed effectively and have high stability.
Furthermore, a central hole is formed in one end, far away from the second function end, of the pull rod sleeve, the top guide groove is formed inwards along part of the edge of the central hole, a raised head guide groove communicated with the top guide groove is formed in the pull rod sleeve, the pull rod is pulled, and the first guide raised head moves in the raised head guide groove.
The beneficial effect of adopting the further scheme is that: the draw bar sleeve is internally provided with the raised head guide groove, so that the first guide raised head is guided in the moving process of the draw bar, the motion track of the first guide raised head is limited, and the limiting effect of the first guide raised head in the draw bar sleeve is realized.
Furthermore, one end of the top guide groove, which is far away from the nose guide groove, is recessed inwards to form a restraining groove, and the restraining groove is used for restraining the first guiding nose when the pull rod is in a contracted state.
The beneficial effect of adopting the further scheme is that: the top guide groove is provided with the restraining groove, when the pull rod assembly is in a contraction state, the restraining groove can stably and firmly restrain the first guide raised head, the pull rod assembly is prevented from being accidentally opened, and the stability of the whole mechanism is ensured.
Furthermore, the circumference outside fixedly connected with locating part of pull rod, the locating part with install the pull rod spring between the telescopic top of pull rod, when pull rod assembly is in the shrink state, the locating part compresses tightly the pull rod spring.
The beneficial effect of adopting the further scheme is that: when the pull rod assembly is switched from the stretching state to the shrinking state, the limiting piece extrudes the pull rod spring until the first guiding raised head is positioned outside the restraining groove, an operator loosens the pull rod, and the first guiding raised head enters the restraining groove and is clamped with the restraining groove under the thrust action of the compression spring; the design ingeniously utilizes the thrust of the pull rod spring, and brings great convenience to operators.
Furthermore, a first groove is formed in the circumferential outer side of the pull rod sleeve, a second groove is formed in the axial direction of the pull rod sleeve, the first groove and the second groove are perpendicular and mutually communicated, a second guiding raised head is formed on the outer side of the limiting piece, and the second guiding raised head moves in the first groove and the second groove and is used for guiding the action of the first guiding raised head.
The beneficial effect of adopting the further scheme is that: when the pull rod assembly is in a contracted state, the second guiding raised head is located in the first groove, when the first guiding raised head is adjusted, the first groove provides a large moving space for the action of the second guiding raised head, and when the second groove moves the second guiding raised head along the axial direction of the pull rod sleeve, a limiting effect is provided.
Furthermore, the top guide groove and the first groove are oppositely arranged on two sides of the axial center line of the pull rod sleeve.
Furthermore, one side of the supporting main body is provided with a pre-twisting shaft seat used for the supporting main body to rotate around the axial direction of the pre-twisting shaft seat.
Furthermore, the pre-twisting shaft seat is a pre-twisting mechanism embedded with a pre-twisting spring.
The beneficial effect of adopting the further scheme is that: when the support device works, the pre-torsion shaft seat provides pre-torsion force for the push-pull fixing mechanism, and the rotation function of the support main body is realized under the driving of the pre-torsion force.
Furthermore, the push rod assembly is positioned at one end in the push rod groove and is in threaded connection with the push rod groove.
The beneficial effect of adopting the further scheme is that: push rod subassembly and push rod groove threaded connection in the push rod inslot, after pull rod subassembly is fixed, fixed connection's such as the butt of first function end or threaded connection effect is realized to rethread rotatory push rod subassembly.
Drawings
FIG. 1 is a schematic view of the push-pull fixing mechanism of the present invention connected to a mechanism to be connected;
FIG. 2 is a schematic view of the supporting state of the push-pull fixing mechanism according to the present invention;
FIG. 3 is a cross-sectional view of the push-pull securing mechanism of the present invention;
FIG. 4 is a schematic view of the tie rod assembly of the present invention;
FIG. 5 is a cross-sectional view of the drawbar assembly according to the invention in the working position;
FIG. 6 is a perspective view of the pull rod of the present invention;
FIG. 7 is a cross-sectional view of the drawbar assembly according to the invention in the collapsed state;
fig. 8 is a partial structural view of the support body according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
100. a support body; 110. a first pre-torsion shaft seat; 111. pre-twisting a spring; 120. a push rod groove; 200. a push rod assembly; 210. a first functional end; 220. a push rod; 300. a drawbar assembly; 310. a pull rod sleeve; 311. a top guide groove; 3111. a confinement groove; 312. a first slot position; 313. a second slot position; 314. a raised head guide groove; 320. a pull rod; 321. a second functional end; 322. a first guide projection; 330. a limiting member; 331. a second guide projection; 340. a pull rod spring; 400. a space experiment cabinet; 410. a guide rail; 420. a movable maintenance platform; 430. a linkage mechanism.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
With reference to fig. 1 to 8, some embodiments of the present invention provide a push-pull fixing mechanism, including a support body 100, a push rod assembly 200, and at least one pull rod assembly 300, where the support body 100 is used to connect two mechanisms to be connected together, and the support body 100 is provided with a push rod groove 120; one end of the push rod assembly 200 is assembled in the push rod groove 120, and the other end is a first functional end 210; one end of the at least one pull rod assembly 300 is assembled in the support body 100, and the other end is a second functional end 321; the push rod assembly 200 and the at least one pull rod assembly 300 are disposed parallel to each other.
Compared with the prior art, the push-pull fixing mechanism realizes the connection between the two mechanisms through the support main body 100, the push rod assembly 200 and the pull rod assembly 300, when in use, the second functional end 321 of the pull rod assembly 300 is fixed, and then the push rod assembly 200 is adjusted and fixed through a special tool, so that a stable push-pull structure is formed, enough support force can be provided for the mechanism to be connected, the bearing requirement of the mechanism to be connected is ensured, the requirement of protruding for a certain length can be met, and the adjustment and maintenance are convenient to carry out; when not in use, the push rod assembly 200 and the pull rod assembly 300 are retracted in the support body, and the occupied space is small.
As shown in fig. 1-2, in some embodiments of the present invention, a push-pull fixing mechanism is applied to the on-line maintenance and adjustment spatial experiment cabinet 400 for supporting the movable maintenance platform 420 in the unfolded state. The support body 100 is rotatably connected to the movable maintenance platform 420, and the first functional end 210 and the second functional end 321 are connected to the guide rail 410 on the side of the spatial experiment cabinet 400. At this time, the push-pull fixing mechanism and the link mechanism 430 are combined to function, have supporting and bearing capabilities, can meet the requirements of realization of the maintenance platform function of the movable maintenance platform 420 and man-machine work efficiency, can also meet the requirements of object fixing, and have an adjusting function. The push-pull fixing mechanism can meet the expanding and folding functions of the movable maintenance platform in the space experiment cabinet, and provides supporting and connecting functions for the movable maintenance platform in the limited space of the space experiment cabinet.
As shown in fig. 2 to 7, in some embodiments of the present invention, the pull rod assembly 300 includes a pull rod sleeve 310 and a pull rod 320, the pull rod sleeve 310 is disposed in the support body 100, one end of the pull rod sleeve 310 away from the second functional end 321 is provided with a top guide slot 311, an upper end of the pull rod 320 is provided with a first guide protrusion 322 for being clamped with the top guide slot 311, and a lower end of the pull rod 320 is integrally connected with the second functional end 321; when the first guide projection 322 is engaged with the top guide slot 311, the pull rod assembly 300 is in a compressed state; when the first guide nose 322 is disengaged from the top guide slot 311 and the first guide nose 322 is positioned within the handle sleeve 310, the handle assembly 300 is in tension.
As shown in fig. 3 and 5-7, a stopper 330 is fixedly connected to the circumferential outer side of the pull rod 320, a pull rod spring 340 is disposed between the stopper 330 and the top end of the pull rod sleeve 310, one end of the pull rod spring 340 abuts against the inner side of the stopper 330, and the other end abuts against the top end of the pull rod sleeve 310. When the pull rod assembly 300 is switched from the stretching state to the shrinking state, the limiting member 330 presses the pull rod spring 340 until the first guiding protrusion 322 is located at the outer side of the top guide slot 311, and the operator releases the pull rod, so that the first guiding protrusion 322 is clamped with the top guide slot 311 under the thrust action of the pull rod spring 340; due to the design, the tension of the pull rod spring 340 is ingeniously utilized, and great convenience is brought to operators. The pull rod spring 340 is deformed to store tension after being compressed, and pushes the limiting member 330 when the pull rod assembly 300 is changed from a compressed state to a stretched state. Optionally, in some embodiments of the present invention, the pull rod spring 340 is a compression spring, pre-stressed when the limiting member 330 abuts against the end of the pull rod sleeve 330. The pre-stressed compression spring is selected, so that when the pull rod assembly 300 changes from the contracted state to the extended state, the pull rod spring 340 can always provide a pushing force to the limiting member 330, and push the limiting member 330 to abut against an end portion of the pull rod sleeve 310 close to the second functional end 321. That is, when the handle assembly 300 is under tension, the limiting member 330 abuts against the end of the handle sleeve 310, and the first guiding nose 322 is located in the handle sleeve 310 and is in a free state.
As shown in fig. 4 to 5, optionally, in some embodiments of the present invention, a central hole is formed at an end of the pull rod sleeve 310 away from the second functional end 321, the top guide groove 311 is formed inward along a partial edge of the central hole, a nose guide groove 314 is formed in the pull rod sleeve 310, and the nose guide groove 314 is formed in the axial direction of the pull rod sleeve 310, and is used for guiding the motion of the first guide nose 322, that is, pulling the pull rod 320, so that the guide nose 322 moves in the nose guide groove 314. The upper end of the nose guide channel 314 is in communication with the top guide channel 311 such that when the handle assembly 300 is changed from the retracted state to the extended state, the first guide nose 322 rotates along the top guide channel 311, and when rotated to a position in communication with the nose guide channel 314, the pull rod 320 is pulled down and the first guide nose 322 moves within the nose guide channel 314. The nose guide groove 314 is formed in the pull rod sleeve 310, so that the first guide nose 322 is guided to limit the motion track of the first guide nose 322 in the moving process of the pull rod 320, and the limiting effect of the first guide nose 322 in the pull rod sleeve 310 is realized.
Optionally, a restraining groove 3111 is formed by recessing an end of the top guide slot 311 away from the nose guide slot 314, for restraining the first guide nose 322 when the handle assembly 300 is in the retracted state. The top guide slot 311 is provided with a constraint groove 3111, when the handle assembly 300 is in a retracted state, the constraint groove 3111 forms a stable and firm constraint effect on the first guide boss 322, so as to prevent the handle assembly 300 from being opened accidentally, and ensure the stability of the whole mechanism. In addition, when the pull rod assembly 300 needs to be changed from the retracted state to the extended state, the first guiding projection 322 needs to be disengaged from the constraining groove 3111, and then the pull rod 320 needs to be rotated so that the first guiding projection 322 enters the projection guiding groove 314.
As shown in fig. 4 to 5, a first slot 312 is formed at the outer circumferential side of the pull rod sleeve 310, a second slot 313 is formed along the axial direction of the pull rod sleeve 310, the first slot 312 is perpendicular to and communicates with the second slot 313, a second guide boss 331 is formed at the outer side of the limiting member 330, and the second guide boss 331 moves in the first slot 312 and the second slot 313 to guide the movement of the first guide boss 322. When the lever assembly 300 is in the retracted state, the second guiding protrusion 331 is located in the first slot 312, when the first guiding protrusion 322 is adjusted, the first slot 312 provides a large movement space for the second guiding protrusion 331 to move, and the second slot 313 provides a limiting function when the second guiding protrusion 331 moves along the axial direction of the lever sleeve 310. Furthermore, the first slot 312 and the second slot 313 communicate with one another and together form a movement region for the second guide projection 331.
Optionally, the top guide slot 311 and the first slot 312 are oppositely disposed on two sides of an axial center line of the drawbar sleeve 310. This facilitates the guiding action of the second guide projection 331 on the first guide projection 322.
Optionally, the second functional end 321 is a circular disc or a square disc for clamping. The first functional end 210 is a plug for abutment or a joint in threaded connection with a mechanism to be connected. The first functional end 210 and the second functional end 321 are arranged in such a way that the push-pull fixing mechanism can stably connect the mechanisms to be connected together. The push rod assembly 200 includes a push rod 220 and a first functional end 210, wherein one end of the push rod 220 is in threaded connection with the push rod groove, and the other end is fixedly connected with the first functional end 210.
In addition, as shown in fig. 8, a pre-shaft seat 110 is provided at one side of the support body 100 for the support body 100 to rotate in an axial direction around the pre-shaft seat 110. Preferably, the pretwist shaft seat 110 is a pretwist mechanism embedded in a pretwist spring 111. During operation, the pre-twisting shaft seat 110 provides pre-twisting force for the push-pull fixing mechanism, and the rotation function of the support body 100 is realized under the driving of the pre-twisting force.
According to the push-pull fixing mechanism, through the combination of the push rod assembly 200 and the pull rod assembly 300, when the push-pull fixing mechanism is used, firstly, the pull rod assembly 300 is changed from a contraction state to a stretching state, meanwhile, the first functional end 210 and the second functional end 321 are abutted to a mechanism to be connected, and a thrust effect is formed by rotating the push rod assembly 200 through a special tool. In a limited space, the two are mutually combined for use, the fixation stability is strong, and a strong supporting effect can be provided for a mechanism to be connected.
It should be noted that although the embodiment of the present invention has been shown and described, it should be understood that the above embodiment is illustrative and not restrictive, and that those skilled in the art may change, modify, replace and modify the above embodiment within the scope of the present invention.
Claims (9)
1. A push-pull retention mechanism, comprising:
the supporting body is provided with a push rod groove;
one end of the push rod component is assembled in the push rod groove, and the other end of the push rod component is a first functional end;
one end of the at least one pull rod assembly is assembled in the support main body, and the other end of the at least one pull rod assembly is a second functional end;
the push rod assembly and the at least one pull rod assembly are arranged in parallel;
the draw bar assembly includes:
the pull rod sleeve is assembled in the support main body, and a top guide groove is formed in one end, far away from the second function end, of the pull rod sleeve;
the upper end of the pull rod is provided with a first guide raised head which is used for being clamped with the top guide groove, so that the pull rod assembly is in a contraction state, and the lower end of the pull rod is integrally connected with the second function end.
2. A push-pull retention mechanism as claimed in claim 1 wherein the pull rod sleeve has a central bore at an end thereof remote from the second functional end, the top guide slot opening inwardly along a portion of the edge of the central bore, the pull rod sleeve having a nose guide slot therein communicating with the top guide slot, the first guide nose moving within the nose guide slot upon pulling the pull rod.
3. The push-pull retention mechanism of claim 2, wherein the top guide channel is recessed at an end thereof remote from the nose guide channel to form a restraint slot for restraining the first guide nose when the pull rod is in the retracted state.
4. The push-pull fixing mechanism as claimed in claim 1, wherein a stopper is fixedly connected to the outer circumferential side of the pull rod, a pull rod spring is installed between the stopper and the top of the pull rod sleeve, and when the pull rod assembly is in a retracted state, the stopper presses the pull rod spring.
5. The push-pull fixing mechanism as claimed in claim 4, wherein a first groove is formed at an outer side of the pull rod sleeve in a circumferential direction, a second groove is formed along an axial direction of the pull rod sleeve, the first groove is perpendicular to and communicates with the second groove, a second guiding nose is formed at an outer side of the stopper, and the second guiding nose moves in the first groove and the second groove to guide the first guiding nose.
6. The push-pull retention mechanism of claim 5, wherein the top guide slot and the first slot are disposed on opposite sides of an axial centerline of the drawbar sleeve.
7. The push-pull fixing mechanism as claimed in claim 1, wherein a pre-torsion seat is provided at one side of the supporting body for axial rotation of the supporting body around the pre-torsion seat.
8. The push-pull fixing mechanism as claimed in claim 7, wherein the pre-twisting shaft seat is a pre-twisting mechanism with a pre-twisting spring embedded therein.
9. The push-pull retention mechanism of claim 1, wherein the push rod assembly is threaded into the push rod groove at an end of the push rod assembly located within the push rod groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974605.9A CN109050995B (en) | 2018-08-24 | 2018-08-24 | Push-and-pull fixing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974605.9A CN109050995B (en) | 2018-08-24 | 2018-08-24 | Push-and-pull fixing mechanism |
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| Publication Number | Publication Date |
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| CN109050995A CN109050995A (en) | 2018-12-21 |
| CN109050995B true CN109050995B (en) | 2020-05-15 |
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| CN201810974605.9A Active CN109050995B (en) | 2018-08-24 | 2018-08-24 | Push-and-pull fixing mechanism |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111152943B (en) * | 2020-01-13 | 2021-07-27 | 中国科学院空间应用工程与技术中心 | Fixing mechanism and spacecraft |
| CN116096023B (en) * | 2022-12-30 | 2023-08-18 | 中国科学院空间应用工程与技术中心 | On-line maintenance, adjustment and operation cabinet for space station |
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| US6742761B2 (en) * | 2001-04-10 | 2004-06-01 | Tini Alloy Company | Miniature latching valve |
| CN105480439B (en) * | 2016-01-14 | 2017-08-25 | 北京空间飞行器总体设计部 | A kind of space manipulator maintainable technology on-orbit device |
| CN205601612U (en) * | 2016-04-19 | 2016-09-28 | 上海霄汉健康科技有限公司 | Wheel chair access motor vehicle throttle brake control device |
| CN107628281B (en) * | 2017-08-18 | 2020-02-28 | 上海宇航系统工程研究所 | Sliding table device convenient for on-orbit dismounting and mounting of rolling support assembly |
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