CN211954686U - Bidirectional spring load device with adjustable fixed distance and rigidity - Google Patents
Bidirectional spring load device with adjustable fixed distance and rigidity Download PDFInfo
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- CN211954686U CN211954686U CN202020612875.8U CN202020612875U CN211954686U CN 211954686 U CN211954686 U CN 211954686U CN 202020612875 U CN202020612875 U CN 202020612875U CN 211954686 U CN211954686 U CN 211954686U
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Abstract
The invention belongs to the technical field of spring loading devices, and particularly relates to a fixed-distance rigidity-adjustable bidirectional spring loading device; the two coaxial springs with different diameters and rigidity are used for providing load force, the springs with different rigidities are combined to form new total rigidity through coaxial loading of the two springs, the position of an adjusting nut is adjusted, different precompression amounts and contact loading positions of the two springs are controlled, a linear load area and a fixed-distance step load area can be formed, and bidirectional loading is achieved through symmetrical design.
Description
Technical Field
The invention belongs to the technical field of spring loading devices, and particularly relates to a fixed-distance rigidity-adjustable bidirectional spring loading device.
Background
At present, due to the requirements of durability test and performance test of a manual speed change control mechanism (a handle and a flexible shaft), a single-spring type load device is widely adopted. In a real vehicle gear shifting test period, the stress of a transmission control mechanism is not linear, for example, in the process of engaging a low gear 3 into a high gear 4, the gear is disengaged from the low gear 3 and enters a neutral gear, the stress is small, the stress is almost zero (only the friction force in the system) after the gear enters the neutral gear, the time is very short and can be ignored, the gear enters the 4 gear from the neutral gear, the stress is suddenly increased, the process is similar to a step process, and the stroke positions of step force generated by the process are different on different transmissions due to different gear shifting stroke designs. In the endurance test, in order to simulate the actual vehicle condition to fully evaluate the test piece performance, the test load of the speed change control mechanism must be made as close as possible to the shift force load spectrum. The rigidity of the currently common single-spring type loading device is certain, and the commonly used single-spring type loading device cannot provide variable rigidity characteristic and fixed-distance step loading force, specifically:
in the prior art, the rigidity of the coefficient-adjustable tension-compression spring load mechanism in the same direction cannot be adjusted, and a fixed-distance step load cannot be provided; no guide mechanism exists in the moving direction, and the unbalance loading risk exists; the loader and the output end of the test sample piece need to be fixed independently.
In the prior art, the combined spring of the spring parallel connection type adjustable buffer with variable rigidity and friction force can only realize unidirectional rigidity adjustment and can not flexibly adjust the fixed-distance load position according to the requirement. The spring simulation load testing device in the prior art has the advantage that the spring stiffness is not adjustable.
Disclosure of Invention
In order to overcome the problems, the invention provides a fixed-distance stiffness-adjustable bidirectional spring loading device, which uses two coaxial springs with different diameters and stiffness to provide loading force, enables the springs with different stiffness to form new total stiffness through the coaxial loading of the two springs, adjusts the position of an adjusting nut, controls different precompression amounts and contact loading positions of the two springs in sequence, can form a linear loading area and a fixed-distance step loading area, and realizes bidirectional loading through symmetrical design.
The bidirectional spring loading device comprises a base mechanism, a support pull rod 2, an outer spring 7, an inner spring 8, a mandrel 9, an external flange 10 and an external flange pull rod 11, wherein the base mechanism comprises a base plate, a support pull rod, a support rod and a support rod, the external flange pull rod is connected with the support rod through a connecting rod, the support rod is connected with the external flange pull rod through
The base mechanisms are arranged at two ends of the support pull rod 2 in a bilateral symmetry mode and comprise a support baffle plate 1, an outer spring base 3, an adjusting nut 4, a movable shaft shoulder 5 and an inner spring base 6, wherein the support baffle plate 1 is sleeved and fixed outside the support pull rod 2, a baffle plate central hole 12 is formed in the support baffle plate 1, the outer spring base 3 is sleeved outside the support pull rod 2 on the inner side of the support baffle plate 1, an outer base central hole 31 is formed in the outer spring base 3, the movable shaft shoulder 5 is sleeved in the baffle plate central hole 12 and the outer base central hole 31, the movable shaft shoulder 5 can move axially in the baffle plate central hole 12 and the outer base central hole 31, and the inner spring base 6 is sleeved outside the movable shaft shoulder 5;
the two ends of the mandrel 9 are respectively in threaded connection with the movable shaft shoulder 5, the adjusting nut 4 is in threaded connection with the mandrel 9 outside the support baffle plate 1 on one side of the base mechanism, the two ends of the outer spring 7 are respectively clamped in the outer spring base 3, the two ends of the inner spring 8 are respectively clamped in the inner spring base 6, and the external flange 10 is fixed outside the support baffle plate 1 on the other side of the base mechanism through the external flange pull rod 11.
The external flange 10 is provided with a flange center hole 101.
The mandrel 9 is opposite to the central hole 101 of the flange.
The middle part of the mandrel 9 is a polished rod, the two end parts are provided with external threads, and the mandrel 9 is in threaded connection with the movable shaft shoulder 5 through the external threads at the two ends respectively.
The support pull rod 2 is of a three-step pull rod structure.
The outer spring base 3 in be equipped with independent recess, the both ends of outer spring 7 joint respectively in the recess of outer spring base 3.
The inner spring base 6 in be equipped with independent recess, the both ends of inner spring 8 joint respectively in the recess of inner spring base 6.
One end inside the adjusting nut 4 is a unthreaded hole, the adjusting nut 4 is sleeved outside the movable shaft shoulder 5 through the unthreaded hole, the other end inside the adjusting nut 4 is a threaded hole, and the adjusting nut 4 is in threaded connection with the mandrel 9 through the threaded hole.
The invention has the beneficial effects that:
the invention provides a load force by using two coaxial springs with different diameters and rigidities, the springs with different rigidities are combined to form a new total rigidity by coaxially loading the two springs, the position of an adjusting nut is adjusted, different precompression amounts and contact loading positions of the two springs are controlled, a linear load area and a distance step load area can be formed, bidirectional loading is realized by symmetrical design, and the bidirectional spring load device is provided with variable rigidity characteristics and distance step load force.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of an outer spring base of the present invention.
Fig. 3 is a schematic structural view of the inner spring base of the present invention.
Fig. 4 is a schematic view of the structure of the support tie bar of the present invention.
Wherein: the support comprises a support baffle 1, a support pull rod 2, an outer spring base 3, an outer base center hole 31, an adjusting nut 4, a movable shaft shoulder 5, an inner spring base 6, an outer spring 7, an inner spring 8, a core shaft 9, an external flange 10, a flange center hole 101, an external flange pull rod 11 and a baffle center hole 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in figure 1, the bidirectional spring loading device with fixed distance and adjustable rigidity comprises a base mechanism, a support pull rod 2, an outer spring 7, an inner spring 8, a mandrel 9, an external flange 10 and an external flange pull rod 11, wherein the base mechanism, the support pull rod, the outer spring 7, the inner spring 8, the mandrel 9, the external flange 10 and the external flange pull rod 11 are connected in sequence, and the bidirectional
The base mechanisms are arranged at two ends of the support pull rod 2 in a bilateral symmetry mode and comprise a support baffle plate 1, an outer spring base 3, an adjusting nut 4, a movable shaft shoulder 5 and an inner spring base 6, wherein the support baffle plate 1 is sleeved and fixed outside the support pull rod 2, a baffle plate central hole 12 is formed in the support baffle plate 1, the outer spring base 3 is sleeved outside the support pull rod 2 on the inner side of the support baffle plate 1, an outer base central hole 31 is formed in the outer spring base 3, the movable shaft shoulder 5 is sleeved in the baffle plate central hole 12 and the outer base central hole 31, the movable shaft shoulder 5 can move axially in the baffle plate central hole 12 and the outer base central hole 31, and the inner spring base 6 is sleeved outside the movable shaft shoulder 5;
the two ends of the mandrel 9 are respectively in threaded connection with the movable shaft shoulder 5, the adjusting nut 4 is in threaded connection with the mandrel 9 outside the support baffle plate 1 on one side of the base mechanism, the two ends of the outer spring 7 are respectively clamped in the outer spring base 3, the two ends of the inner spring 8 are respectively clamped in the inner spring base 6, and the external flange 10 is fixed outside the support baffle plate 1 on the other side of the base mechanism through the external flange pull rod 11.
The external flange 10 is provided with a flange center hole 101.
The mandrel 9 is opposite to the central hole 101 of the flange.
The middle part of the mandrel 9 is a polished rod, the two end parts are provided with external threads, and the mandrel 9 is in threaded connection with the movable shaft shoulder 5 through the external threads at the two ends respectively.
As shown in fig. 4, the support pull rod 2 is a three-step pull rod structure and simultaneously plays a role in guiding the axial sliding of the outer spring base 3.
As shown in fig. 2, an independent groove is arranged in the outer spring base 3, and two ends of the outer spring 7 are respectively clamped in the groove of the outer spring base 3.
As shown in fig. 3, an independent groove is arranged in the inner spring base 6, and two ends of the inner spring 8 are respectively clamped in the groove of the inner spring base 6.
The inside one end of adjusting nut 4 be the unthreaded hole, adjusting nut 4 is put outside movable shaft shoulder 5 through this unthreaded hole cover to avoid taking place to interfere, the inside other end of adjusting nut 4 is the screw hole, adjusting nut 4 is on dabber 9 through this screw hole threaded connection.
The device uses two coaxial parallel springs with different diameters and rigidity to provide load force;
the inner spring base and the outer spring base are respectively provided with two independent grooves which are respectively used for positioning the two springs;
the external flange 10 is used to connect the load device and the sample output end into a closed internal force system, so that the two do not need to be fixed separately.
The working principle is as follows:
when the output end of the speed change control steel cable assembly is connected with the right end of the mandrel 9 through the external flange 10 and moves rightwards, the mandrel 9 firstly drives the movable shaft shoulder 5 connected with the mandrel through threads to compress the inner spring base 6 rightwards, the inner spring base 6 further compresses the inner spring 8 rightwards, a load force which is linearly and uniformly increased in a first stage is formed, and in the process, the outer base center hole 31 of the outer spring base 3 plays a role in guiding the axial movement of the movable shaft shoulder 5. The mandrel 9 continues to move rightwards until the mandrel is in contact with the outer spring base 3 through the adjusting nut 4 in threaded connection, at the moment, the outer spring 7 starts to work, so that step load force of a second stage is formed, and in the process, the support pull rod 2 plays a role in guiding the axial movement of the outer spring base 3; the distance between the adjusting nut 4 and the outer spring base 3 can be set at will to ensure that the secondary loading is carried out at a determined stroke position. When the spindle 9 is moved to the left, the principle is the same. The outer spring 7 and the inner spring 8 can be selected from different rigidity models to be combined randomly, so that the rigidity of the load device is determined to be variable; the rigidity of the outer spring 7 is selectable, the pre-pressing amount is adjustable, the position of the adjusting nut 4 is adjustable, the step load force is adjustable, and the loading position point is adjustable; the device is partially bilaterally symmetrical, and bidirectional equal-load loading can be realized.
The inner spring base 6 and the outer spring base 3 are respectively provided with an independent groove spring seat which is used for positioning two springs respectively, and the springs with different stiffness are combined to form new total stiffness through coaxial loading of the two springs; the support pull rod 2 is of a three-pull-rod structure, and the pull rod simultaneously plays a role in axial sliding and guiding of the base; the front end of the interior of the adjusting nut 4 is a unthreaded hole, and the rear end of the interior of the adjusting nut is a threaded hole, so that the function of adjusting the working position of the large spring is achieved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the protection scope of the present invention is not limited to the details of the above embodiments, and within the technical concept of the present invention, any person skilled in the art is within the technical scope of the present invention, and according to the technical solution of the present invention and the inventive concept thereof, equivalent replacement or change is made, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (8)
1. The bidirectional spring loading device with the adjustable fixed distance and the adjustable rigidity is characterized by comprising a base mechanism, a support pull rod (2), an outer spring (7), an inner spring (8), a mandrel (9), an external flange (10) and an external flange pull rod (11), wherein the base mechanism, the support pull rod, the outer spring (7), the inner spring (8), the mandrel (9), the external flange pull rod and the external flange pull rod are connected in sequence
The base mechanisms are arranged at two ends of the support pull rod (2) in a bilateral symmetry mode and comprise a support baffle plate (1), an outer spring base (3), an adjusting nut (4), a movable shaft shoulder (5) and an inner spring base (6), wherein the support baffle plate (1) is sleeved and fixed outside the support pull rod (2), a baffle plate central hole (12) is formed in the support baffle plate (1), the outer spring base (3) is sleeved outside the support pull rod (2) on the inner side of the support baffle plate (1), an outer base central hole (31) is formed in the outer spring base (3), the movable shaft shoulder (5) is sleeved in the baffle plate central hole (12) and the outer base central hole (31), the movable shaft shoulder (5) can move axially in the baffle plate central hole (12) and the outer base central hole (31), and the inner spring base (6) is sleeved outside the movable shaft shoulder (5);
the two ends of a mandrel (9) are respectively in threaded connection with a movable shaft shoulder (5), an adjusting nut (4) is in threaded connection with the mandrel (9) on the outer side of a support baffle (1) on one side of a base mechanism, the two ends of an outer spring (7) are respectively clamped in an outer spring base (3), the two ends of an inner spring (8) are respectively clamped in an inner spring base (6), and an external flange (10) is fixed on the outer side of the support baffle (1) on the other side of the base mechanism through an external flange pull rod (11).
2. A distance adjustable rate bi-directional spring load device according to claim 1, wherein said outer flange (10) is provided with a flange center hole (101).
3. A distance adjustable rate bi-directional spring load device according to claim 2, characterised in that said spindle (9) is directed against the flange centre hole (101).
4. The distance adjustable rigidity two-way spring loading device according to claim 3, characterized in that the central part of the mandrel (9) is a polished rod, the two ends are provided with external threads, and the mandrel (9) is respectively in threaded connection with the movable shoulder (5) through the external threads at the two ends.
5. The distance adjustable stiffness bidirectional spring loading device according to claim 4, characterized in that the support rod (2) is a three-step rod structure.
6. The fixed-distance adjustable-stiffness bidirectional spring loading device according to claim 5, wherein the outer spring base (3) is internally provided with an independent groove, and two ends of the outer spring (7) are respectively clamped in the grooves of the outer spring base (3).
7. The fixed-distance adjustable-stiffness bidirectional spring loading device according to claim 6, wherein the inner spring base (6) is provided with independent grooves, and two ends of the inner spring (8) are respectively clamped in the grooves of the inner spring base (6).
8. The distance adjustable rigidity two-way spring loading device according to claim 7, characterized in that one end of the inside of the adjusting nut (4) is a unthreaded hole, the adjusting nut (4) is sleeved outside the movable shaft shoulder (5) through the unthreaded hole, the other end of the inside of the adjusting nut (4) is a threaded hole, and the adjusting nut (4) is in threaded connection with the mandrel (9) through the threaded hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020612875.8U CN211954686U (en) | 2020-04-22 | 2020-04-22 | Bidirectional spring load device with adjustable fixed distance and rigidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020612875.8U CN211954686U (en) | 2020-04-22 | 2020-04-22 | Bidirectional spring load device with adjustable fixed distance and rigidity |
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| CN211954686U true CN211954686U (en) | 2020-11-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898707A (en) * | 2021-11-02 | 2022-01-07 | 哈尔滨工业大学 | Variable-rigidity compliant driver |
| CN114031023A (en) * | 2021-11-02 | 2022-02-11 | 哈尔滨工业大学 | Mechanical driver system |
-
2020
- 2020-04-22 CN CN202020612875.8U patent/CN211954686U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898707A (en) * | 2021-11-02 | 2022-01-07 | 哈尔滨工业大学 | Variable-rigidity compliant driver |
| CN114031023A (en) * | 2021-11-02 | 2022-02-11 | 哈尔滨工业大学 | Mechanical driver system |
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