A translational torsion bar elastic device providing translational resistance by torsion of the torsion bar

Abstract

The present invention discloses a translational torsion bar elastic device that provides translational resistance by torsion of a torsion bar. The device comprises a torsion bar with a fixed left and right rotating arms at each end, a translation block, a slide for the translation block to slide forward and backward, and a left and right rotating arm guide rail located on two mutually parallel vertical planes outside the translation block. The torsion bar is laterally mounted on the translation block, and the left and right rotating arm guide rails have opposite vertical directions. The outer ends of the left and right rotating arms are respectively constrained on the left and right rotating arm guide rails and can slide on the left and right rotating arm guide rails. The device has the following advantages: the torsion bar has a high energy storage density, and any translational resistance can be obtained by changing the torsion bar diameter; the structure is simple, and only one torsion bar is required; and the translational resistance can be set to change relatively linearly or nonlinearly as needed.

Description

Technical Field

[0001] The present invention relates to a torsion bar spring device, in particular to a translational torsion bar elastic device in which translational resistance is provided by torsion of the torsion bar. Background Art

[0002] A type of equipment involves components that need to translate in a straight line under special circumstances (such as earthquakes) or certain working conditions. The components are required to be subjected to elastic resistance of linear variable stiffness or nonlinear variable stiffness during the translation process and their translation stroke is limited. Some of the translation components of this type of equipment are required to be able to reset automatically, while others do not require immediate reset. Their common characteristics are a certain lateral width and a large mass.

[0003] Compression springs have low energy storage density, limited bearing capacity, and unstable expansion and contraction directions, making them unsuitable for use in the above-mentioned devices.

[0004] As an elastic element, the torsion bar spring has the advantages of high energy density, large bearing capacity and low friction loss compared with other elastic elements. The most widely used is the train anti-roll torsion bar device.

[0005] In the prior art, the application of torsion bar springs is to set torsion arms at both ends of the torsion bar so that the torsion arms at both ends are subjected to opposite forces to cause the torsion bar to have a torsional elastic force. Its application characteristics are that the component applying the force to the torsion arm and the torsion arm maintain a relatively fixed position. If the torsion bar spring is to be applied to a moving component, it is necessary to solve how to make the torsion bar twist during the movement to form a torsional elastic force, and to react this torsional elastic force to the moving component so that the translation of the moving component is subject to the elastic resistance of the torsion bar spring. It is even necessary to make the torsion bar change its stiffness linearly or nonlinearly as required. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: how to apply a torsion bar spring to a translationally moving object so that the torsion bar spring provides elastic resistance for the translationally moving object.

[0007] In view of the above problems, the technical solution proposed by the present invention is:

[0008] A translational torsion bar elastic device in which translational resistance is provided by torsion of a torsion bar, comprising a torsion bar with a fixed left and right rotating arms at both ends thereof, a translation block, a slide for the translation block to slide forward and backward, a left rotation arm guide rail and a right rotation arm track respectively located on two mutually parallel vertical planes outside the two sides of the translation block, the torsion bar being laterally mounted on the translation block, the left rotation arm guide rail and the right rotation arm guide rail having opposite vertical directions, the outer ends of the left rotation arm and the right rotation arm being respectively constrained on the left rotation arm guide rail and the right rotation arm track and being able to slide on the left rotation arm guide rail and the right rotation arm track.

[0009] There are left and right plates standing on both sides of the slide, and the left turning arm guide rail and the right turning arm guide rail are respectively the left slide rail groove and the right slide rail groove opened on the left and right plates. The outer end of the left turning arm has a left arm guide column extending to the left and parallel to the torsion bar, and the outer end of the right turning arm has a right arm guide column extending to the right and parallel to the torsion bar. The left arm guide column of the left turning arm and the right arm guide column of the right turning arm are respectively located in the left slide rail groove and the right slide rail groove.

[0010] The diameters of the left arm guide column and the right arm guide column are respectively smaller than the upper and lower widths of the left slide rail groove and the right slide rail groove.

[0011] The left slide rail groove and the right slide rail groove are respectively an arc groove with the center of the circle at the top and an arc groove with the center of the circle at the bottom. Before the translation occurs, the left arm guide column of the left rotating arm and the right arm guide column of the right rotating arm are respectively located at the bottom of the arc-shaped left slide rail groove and the top of the arc-shaped right slide rail groove. When the translation occurs, the elastic resistance exerted by the torsion bar on the translation block changes nonlinearly.

[0012] The left slide rail groove and the right slide rail groove are respectively a V-shaped groove opening upward and a V-shaped groove opening downward, and are formed by two intersecting straight grooves intersecting at an angle. Before the translation occurs, the left arm guide column of the left rotating arm and the right arm guide column of the right rotating arm are respectively located at the bottom of the V-shaped left slide rail groove and the top of the V-shaped right slide rail groove. When the translation occurs, the elastic resistance exerted by the torsion bar on the translation block shows a relative linear change.

[0013] The radians of the left and right slide rail grooves are 0.8-1π, so that the translation block subjected to nonlinear resistance changes during translation can obtain a greater restoring force provided by the torsion bar after completing translation.

[0014] The V-shaped included angles of the left and right slide rail grooves are less than 130°, so that the translation block subjected to linear resistance changes during translation can obtain a greater restoring force provided by the torsion bar after completing translation.

[0015] Rollers are sleeved on the left arm guide column and the right arm guide column.

[0016] The left slide rail groove is a groove communicating with the left and right sides, and the right slide rail groove is a groove communicating with the left and right sides.

[0017] Mounting seats are respectively provided on both sides of the rear end surface of the translation block, and mounting holes are provided on the mounting seats. Both ends of the torsion bar are located in the mounting holes and can rotate in the mounting holes. Beneficial effects

[0018] 1. The torsion bar has a high energy storage density and can obtain any translational resistance by changing the diameter of the torsion bar;

[0019] 2. The structure is simple, only one torsion bar is required;

[0020] 3. The translational resistance can be set to change relatively linearly or nonlinearly as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a translational torsion bar elastic device according to the first embodiment, in which translational resistance is provided by torsion of the torsion bar;

[0022] Figure 2 Schematic perspective view of the torsion bar and its torsion arm according to the first embodiment;

[0023] Figure 3 A schematic diagram showing the left arm guide post of the left pivot arm and the right arm guide post of the right pivot arm of the torsion bar according to the first embodiment in the left and right slide rail grooves, respectively;

[0024] Figure 4 Schematic diagram of the left arm guide post of the left pivot arm and the right arm guide post of the right pivot arm of the torsion bar according to the first embodiment in the left and right slide rail grooves respectively;

[0025] Figure 5 Schematic diagram of the left arm guide post of the left pivot arm and the right arm guide post of the right pivot arm of the torsion bar according to the second embodiment in the left and right slide rail grooves respectively;

[0026] Figure 6 Schematic diagram of the left arm guide post of the left pivot arm and the right arm guide post of the right pivot arm of the torsion bar according to the third embodiment in the left and right slide rail grooves respectively;

[0027] Figure 7 Schematic diagram of the force relationship between the right arm guide column of the right rotating arm in the right slide rail groove after the translation block completes translation in Example 3. In the figure, F is the reaction force exerted by the wall of the right slide rail groove on the right arm guide column, F1 is the component of the reaction force F, and the component F1 is the reset force of the torsion bar on the translation block;

[0028] Figure 8 A perspective schematic diagram of the left arm guide post of the left pivot arm and the right arm guide post of the right pivot arm of the torsion bar according to the fourth embodiment, respectively, in the left slide rail groove and the right slide rail groove;

[0029] Figure 9 Schematic diagram of the force relationship between the right arm guide post of the right rotating arm in the right slide rail groove after the translation block of Example 4 completes translation. In the figure, F is the reaction force exerted by the wall of the right slide rail groove on the right arm guide post, F1 is the component of the reaction force F, and the component force F is the restoring force of the torsion bar on the translation block;

[0030] Figure 10 This is a three-dimensional schematic diagram of the torsion bar and its torsion arm described in Example 5.

[0031] In the figure: 1. Translation block; 2. Torsion bar; 21. Left pivot arm; 211. Left arm guide column; 22. Right pivot arm; 221. Right arm guide column; 3. Slide; 4. Left side plate; 41. Left slide rail groove; 5. Right side plate; 51. Right slide rail groove; 6. Mounting seat; 61. Mounting hole; 7. Roller; 8. Linear groove. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1

[0033] like Figure 1 、 2 As shown in Figure 3, a translational torsion bar elastic device in which translational resistance is provided by torsion of the torsion bar, comprises a torsion bar 2, with a fixed left rotating arm 21 and a right rotating arm 22 at both ends of the torsion bar 2, a translation block 1, a slide 3 for the translation block 1 to slide forward and backward, a left rotating arm guide rail and a right rotating arm rail located on two mutually parallel vertical planes outside the two sides of the translation block 1, the torsion bar 2 is horizontally installed on the translation block 1, the left rotating arm guide rail and the right rotating arm guide rail have opposite upward and downward directions, the outer ends of the left rotating arm 21 and the right rotating arm 22 are respectively constrained on the left rotating arm guide rail and the right rotating arm rail and can slide on the left rotating arm guide rail and the right rotating arm rail. When the translation block 1 translates on the slide 3, the left pivot arm 21 and the right pivot arm 22 rotate upward along the left pivot arm guide rail, and downward along the right pivot arm track rail, respectively, causing the torsion bar 2 to twist. The twisted torsion bar 2 exerts a force on the left pivot arm 21 and the right pivot arm 22, respectively, and the force is applied to the left pivot arm guide rail and the right pivot arm track rail via the left pivot arm 21 and the right pivot arm 22, respectively. At the same time, the left pivot arm guide rail and the right pivot arm track rail respectively exert a reaction force on the left pivot arm 21 and the right pivot arm 22, thereby forming a resistance to the translation of the torsion bar 2 with the translation block 1. Moreover, as the translation stroke increases, the degree of twisting of the torsion bar 2 increases, and the resistance to the translation of the torsion bar 2 with the translation block 1 also increases. In this way, the torsion bar 2 forms a torsion bar spring that exerts resistance to the translation of the translation block 1, and this resistance increases with the increase of the translation stroke. The advantages are: only one torsion bar 2 is needed to make the translation block 1 with a certain width obtain balanced resistance on the left and right. If compression springs are used, at least two on the left and right are needed to balance the forces on the translation block 1 on the left and right, thereby making the setting of the elastic resistance mechanism simpler; the torsion bar spring has a high energy storage density, and various elastic force requirements can be met by simply changing the diameter of the torsion bar 2.

[0034] The translation mentioned here refers to the translation block 1 moving forward or backward on a plane.

[0035] like Figure 4As shown, there are a left side plate 4 and a right side plate 5 standing on both sides of the slide 3, and the left rotating arm guide rail and the right rotating arm guide rail are a left slide rail groove 41 and a right slide rail groove 51 respectively opened on the left side plate 4 and the right side plate 5, the outer end of the left rotating arm 21 has a left arm guide column 211 extending to the left parallel to the torsion bar 2, and the outer end of the right rotating arm 22 has a right arm guide column 221 extending to the right parallel to the torsion bar 2, the left arm guide column 211 of the left rotating arm 21 and the right arm guide column 221 of the right rotating arm 22 are respectively located in the left slide rail groove 41 and the right slide rail groove 51, and can slide in the left slide rail groove 41 and the right slide rail groove 51 respectively.

[0036] The diameters of the left arm guide column 211 and the right arm guide column 221 are respectively smaller than the upper and lower widths of the left slide rail groove 41 and the right slide rail groove 51, so that the left arm guide column 211 and the right arm guide column 221 only slide along one of the upper and lower side walls of the slide rail groove.

[0037] The left slide rail groove 41 and the right slide rail groove 51 are respectively an arcuate groove with the center at the top and an arcuate groove with the center at the bottom. Before the translation occurs, the left arm guide column 211 of the left rotating arm 21 and the right arm guide column 221 of the right rotating arm 22 are respectively located at the bottom of the arcuate left slide rail groove 41 and the top of the arcuate right slide rail groove 51. When the translation occurs, the elastic resistance exerted by the torsion bar 2 on the translation block 1 changes nonlinearly. Before the translation occurs, the left arm guide column 211 of the left rotating arm 21 and the right arm guide column 221 of the right rotating arm 22 are respectively located at the bottom of the arc-shaped left slide rail groove 41 and the top of the arc-shaped right slide rail groove 51. In the stroke where the translation block 1 starts to slide, in the bottom area of ​​the left slide rail groove 41 and the top area of ​​the arc-shaped right slide rail groove 51, the upward amplitude of the left slide rail groove 41 and the downward amplitude of the right slide rail groove 51 are not large. Therefore, the torsional amplitude of the torsion bar 2 sliding with the translation block 1 is not large, and the change in the elastic resistance formed on the translation block is also small. After the translation block slides for a main force, the upward amplitude of the left slide rail groove 41 and the downward amplitude of the right slide rail groove 51 begin to increase suddenly, and the torsional amplitude of the torsion bar 2 sliding with the translation block 1 suddenly increases, and the elastic resistance formed on the translation block 1 also suddenly increases, so that the elastic resistance received by the translation block 1 does not change linearly in direct proportion to the sliding distance. This non-linear force change is exactly what the translational torsion bar elastic device, in which the translational resistance is provided by the torsion bar torsion, needs to adapt to most working conditions.

[0038] Here, the nonlinear change of elastic resistance means that the elastic resistance experienced by the translation block 1 does not change linearly in direct proportion to the sliding distance.

[0039] The left slide rail groove 41 and the right slide rail groove 51 may also be an arcuate groove with the center at the bottom and an arcuate groove with the center at the top, respectively.

[0040] The torsion bar 2 is installed on the translation block as follows: mounting seats 6 are provided on both sides of the rear end surface of the translation block 1, and mounting holes 61 are provided on the mounting seats 6. Both ends of the torsion bar 2 are located in the mounting holes 61 and can rotate in the mounting holes 61.

[0041] In order to facilitate processing and assembly, the left slide rail groove 41 is generally designed to be a groove communicating with the left and right sides, and the right slide rail groove 51 is generally designed to be a groove communicating with the left and right sides. Example 2

[0042] like Figure 5 As shown, the difference from the first embodiment lies in that the left and right slide rail grooves 41 and 51 are respectively V-shaped grooves opening upward and downward, formed by two intersecting linear grooves 8 intersecting at an angle. Before translation occurs, the left arm guide post 211 of the left pivot arm 21 and the right arm guide post 221 of the right pivot arm 22 are located at the bottom of the V-shaped left slide rail groove 41 and the top of the V-shaped right slide rail groove 51, respectively. When translation occurs, the elastic resistance exerted by the torsion bar 2 on the translation block 1 changes linearly. Because the linear grooves 8 point in a constant direction, the torsion amplitude of the left and right pivot arms 21 and 22 of the torsion bar 2 as they slide with the translation block 1 is approximately proportional to the sliding distance. As a result, the elastic resistance exerted on the translation block 1 during sliding changes linearly with the sliding distance. This variation is also required for a translation-type torsion bar elastic device, in which translation resistance is provided by torsion bar torsion, to adapt to certain working conditions.

[0043] Here, the relatively linear change of elastic resistance means that the elastic resistance of the translation block 1 changes only in a linear manner that is close to proportional to the sliding distance. This is relative to the arc groove setting in Example 1. The principle involves the complex relationship between the rotation amplitude of the left rotating arm 21 and the right rotating arm 22 and multiple factors, which will not be discussed further here. Example 3

[0044] like Figure 6 、 7 As shown, this embodiment is a technical measure derived from the first embodiment. It differs from the above embodiment in that the radians of the left and right slide rail grooves 41 and 51 are 2.5 Rad to 3.14 Rad, such as 2.5 Rad, 2.9 Rad, and 3.14 Rad. This allows the translation block 1, which is subject to nonlinear resistance changes during translation, to obtain a greater restoring force from the torsion bar 2 after completing translation. This is achieved by designing the left and right slide rail grooves 41 and 51 to be close to a semicircle, increasing the steepness of both ends. This allows the reaction force F generated by the left and right slide rail grooves 41 and 51 on the outer ends of the left and right pivot arms 21 and 22, respectively, to have a greater component force F1 in the same direction as the reset direction of the translation block 1, thereby providing the torsion bar 2 with a greater restoring force to drag the translation block 1 back to the low-energy state.

[0045] This embodiment belongs to an application situation in which a translational torsion bar elastic device that provides translational resistance by torsion of the torsion bar needs to be reset in time. Example 4

[0046] like Figure 8 、 9 As shown, this embodiment is a technical measure derived from the second embodiment. The V-shaped angles of the left and right slide rail grooves 41 and 51 are between 90° and 130°, such as 90°, 110°, and 130°. This allows the translation block 1, which is subject to linear resistance changes during translation, to obtain a greater restoring force from the torsion bar 2 after completing translation. The principle is similar to that of the third embodiment, which also aims to increase the steepness of the linear groove 8 so that the reaction force F generated by the left and right slide rail grooves 41 and 51 on the outer ends of the left and right pivot arms 21 and 22, respectively, has a greater component F1 in the direction of the translation block 1's return, thereby providing the torsion bar 2 with a greater restoring force to drag the translation block 1 back to its low-energy state.

[0047] This embodiment belongs to an application situation in which a translational torsion bar elastic device that provides translational resistance by torsion of the torsion bar needs to be reset in time. Example 5

[0048] like Figure 10 As shown, in order to facilitate smooth running in the track grass and avoid wear of the sliding parts, rollers 7 are mounted on the left arm guide column 211 and the right arm guide column 221.

[0049] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A translational torsion bar elastic device in which translational resistance is provided by torsion of the torsion bar, comprising a torsion bar (2), wherein the torsion bar (2) has a fixed left turning arm (21) and a fixed right turning arm (22) at both ends, characterized in that: The invention also includes a translation block (1), a slide (3) for the translation block (1) to slide forward and backward, a left rotation arm guide rail and a right rotation arm track rail respectively located on two mutually parallel vertical planes outside the translation block (1), the torsion bar (2) is transversely mounted on the translation block (1), the left rotation arm guide rail and the right rotation arm guide rail have opposite vertical directions, the outer ends of the left rotation arm (21) and the right rotation arm (22) are respectively constrained on the left rotation arm guide rail and the right rotation arm track rail and can slide on the left rotation arm guide rail and the right rotation arm track rail; mounting seats (6) are respectively provided on both sides of the rear end surface of the translation block (1), and the mounting seats (6) are provided with mounting holes (61), and the two ends of the torsion bar (2) are located in the mounting holes (61) and can rotate in the mounting holes (61).

2. The translational torsion bar elastic device according to claim 1, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: There are a left side plate (4) and a right side plate (5) on both sides of the slide (3), and the left turning arm guide rail and the right turning arm guide rail are a left slide rail groove (41) and a right slide rail groove (51) respectively opened on the left side plate (4) and the right side plate (5). The outer end of the left turning arm (21) has a left arm guide column (211) extending to the left and parallel to the torsion bar (2), and the outer end of the right turning arm (22) has a right arm guide column (221) extending to the right and parallel to the torsion bar (2). The left arm guide column (211) of the left turning arm (21) and the right arm guide column (221) of the right turning arm (22) are respectively located in the left slide rail groove (41) and the right slide rail groove (51).

3. The translational torsion bar elastic device according to claim 2, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: The diameters of the left arm guide column (211) and the right arm guide column (221) are respectively smaller than the upper and lower widths of the left slide rail groove (41) and the right slide rail groove (51).

4. The translational torsion bar elastic device according to claim 2, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: The left slide rail groove (41) is an arcuate groove with its center at the top, and the right slide rail groove (51) is an arcuate groove with its center at the bottom. Before translation occurs, the left arm guide column (211) of the left rotating arm (21) and the right arm guide column (221) of the right rotating arm (22) are respectively located at the bottom of the arcuate left slide rail groove (41) and the top of the arcuate right slide rail groove (51). When translation occurs, the elastic resistance exerted by the torsion bar (2) on the translation block (1) changes nonlinearly.

5. The translational torsion bar elastic device according to claim 2, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: The left slide rail groove (41) is a V-shaped groove with an opening facing upward, and the right slide rail groove (51) is a V-shaped groove with an opening facing downward. The V-shaped groove is formed by two intersecting straight line grooves (8) intersecting at an angle. Before the translation occurs, the left arm guide column (211) of the left rotating arm (21) and the right arm guide column (221) of the right rotating arm (22) are respectively located at the bottom of the V-shaped left slide rail groove (41) and the top of the V-shaped right slide rail groove (51). When the translation occurs, the elastic resistance exerted by the torsion bar (2) on the translation block (1) changes relatively linearly.

6. The translational torsion bar elastic device according to claim 4, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: The radians of the left slide rail groove (41) and the right slide rail groove (51) are 2.5 Rad to 3.14 Rad, so that the translation block (1) subjected to nonlinear resistance changes during translation can obtain a greater restoring force provided by the torsion bar (2) after completing the translation.

7. The translational torsion bar elastic device according to claim 5, wherein the translational resistance is provided by the torsion bar torsion, characterized in that: The V-shaped included angle of the left slide rail groove (41) and the V-shaped included angle of the right slide rail groove (51) are 90°-130°, so that the translation block (1) subjected to linear resistance changes during translation can obtain a greater restoring force provided by the torsion bar (2) after completing the translation.

8. The translational torsion bar elastic device according to any one of claims 2 to 7, wherein: Rollers (7) are sleeved on the left arm guide column (211) and the right arm guide column (221).

9. The translational torsion bar elastic device according to any one of claims 2 to 7, wherein: The left slide rail groove (41) is a groove communicating with the left and right sides, and the right slide rail groove (51) is a groove communicating with the left and right sides.

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