Booster, power assisting device and photovoltaic tracking system

Abstract

The invention discloses a booster, a power assisting device and a photovoltaic tracking system, and relates to the technical field of power assisting machinery of a rotating shaft, and the booster comprises a fixing part which is provided with a first combination part; the movable part is in rotary fit with the fixed part, and a second combination part is arranged on the movable part; the energy storage unit comprises an elastic piece, the elastic piece is provided with an end A and an end B, and the end A of the elastic piece is connected with the fixing piece; the conversion structure is arranged between the fixed part and the movable part, the conversion structure comprises a switching part, and the switching part is matched with the first combination part or the second combination part; the conversion structure further comprises a limiting part used for limiting the end A of the elastic piece. And the first connecting part is used for being connected with the B end of the elastic piece. The device has the advantages that a power source is more accurately assisted to drive a rotating shaft to work in a load mode, and the device is safe, reliable, high in automation degree, high in practicability, economical and environmentally friendly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power-assisted mechanism of rotating shaft, in particular to a power-assisted device, a power-assisted apparatus and a photovoltaic tracking system. BACKGROUND

[0002] Shaft transmission technology is widely used, for example, a window is installed on a window frame through a rotating shaft, for example, a car gull wing door or trunk door is installed on a car body through a rotating shaft, for example, in a photovoltaic tracking system, a photovoltaic panel is connected with a fixed support through a rotating shaft, for example, a bicycle wheel is connected with a frame.

[0003] In such applications, the rotating shaft is usually horizontally arranged or non-vertically arranged; at this time, the load driven by the rotating shaft, such as a window, a door, a photovoltaic panel, etc., is arranged in a biased manner, so that the center of gravity of the load driven by the rotating shaft cannot coincide with the central axis of the rotating shaft, and thus, in the rotating process, the center of gravity of the load driven by the rotating shaft also rotates around the rotating shaft, and thus, when the rotating shaft drives the load to move, the following two situations occur: first, the center of gravity moves from a high position to a low position, at this time, the torque output by the power source (such as a motor) for driving the load to move through the rotating shaft is usually maintained to prevent the load from freely rotating, that is, to overcome the effect of gravity; second, the center of gravity moves from a low position to a high position, at this time, the torque output by the power source needs to overcome the effect of gravity and also needs to drive the load to move.

[0004] In the above two situations, when the center of gravity of the load and the central axis of the rotating shaft are located at the same horizontal position, the effect of gravity of the load is the largest.

[0005] Therefore, when selecting a power source for driving the load driven by the non-vertically arranged rotating shaft to rotate around the shaft, the torque output by the power source needs to meet the situation that the center of gravity of the load is located at the same horizontal position as the central axis of the rotating shaft, and when the load rotates around the shaft, the power of the power source will be excessive, which leads to an increase in cost.

[0006] To solve this problem, some people have proposed using a spring to assist the power source. As known, under the condition that the elastic coefficient of the spring is fixed, the feedback force of the spring increases with the increase of the deformation of the spring, and under the condition that the elastic coefficient of the spring is fixed and the deformation amount is fixed, the feedback force of the spring is relatively fixed, which is not convenient for the load of different weights to rotate around the shaft, and this is a problem that needs to be solved at present. SUMMARY

[0007] The first object of the present application is to provide a power-assisted device to solve the problem that the current power-assisted device is not convenient for loads of different weights. The second object of the present application is to provide a power-assisted apparatus, and the third object of the present application is to provide a photovoltaic tracking system.

[0008] The present application is implemented by the following technical solutions:

[0009] As a first aspect of the present application, a booster comprises:

[0010] A fixed member is provided with a first coupling part;

[0011] A movable member is in rotational cooperation with the fixed member, and the movable member is provided with a second coupling part;

[0012] An energy storage unit comprises:

[0013] A resilient member has an A end and a B end, and the A end of the resilient member is connected to the fixed member;

[0014] A conversion structure is arranged between the fixed member and the movable member, and the conversion structure comprises an adapter part which cooperates with the first coupling part or the second coupling part;

[0015] The conversion structure further comprises:

[0016] A limiting part for limiting the A end of the resilient member;

[0017] A first connecting part for connecting the B end of the resilient member;

[0018] In an initial state, the A end of the resilient member is connected to the limiting part, the resilient member is pre-tightened and connected to the first connecting part through the B end of the resilient member, and then the fixed member is connected to the A end of the resilient member, and under the abutment of the fixed member, the adapter part cooperates with the second coupling part;

[0019] When storing energy, the movable member rotates in a first direction, the conversion structure is driven to rotate through the second coupling part, the conversion structure drags the resilient member to deform, when reaching a predetermined position and the deformation of the resilient member reaches a predetermined value, the adapter part is separated from the second coupling part and cooperates with the first coupling part under the action of the movable member, and the resilient member is in an energy storage state;

[0020] When releasing energy, the movable member rotates in the opposite direction of the first direction, when reaching a predetermined position, the adapter part is separated from the cooperation with the first coupling part and cooperates with the second coupling part again, the elastic force of the resilient member acts on the second coupling part through the adapter part, thereby driving the movable member to continue rotating in the opposite direction of the first direction until the resilient member returns to the initial state.

[0021] Optionally, the conversion structure comprises a driven member, and the B end of the resilient member is connected to the driven member.

[0022] Optionally, the limiting part is a limiting column arranged on the driven member, and a proximal A end of the elastic member is provided with a limiting part matched with the limiting column.

[0023] Alternatively, the limiting part is a limiting sliding groove arranged on the driven member, a length direction of the limiting sliding groove is consistent with a circumferential direction of the fixing member, and the limiting sliding groove further comprises a sliding block matched with the limiting sliding groove.

[0024] Optionally, the first combining part is a groove or a notch arranged on the fixing member, and the second combining part is a groove or a notch arranged on the movable member.

[0025] Optionally, a contact surface of the adapter part for contacting the fixing member or the movable member is a smooth curved surface.

[0026] And / or,

[0027] The adapter part is provided with a roller and / or a ball, and the adapter part contacts the fixing member or the movable member through the roller and / or the ball.

[0028] Optionally, the number of the first connecting parts is at least one group, and a plurality of groups of the first connecting parts are distributed in an annular array along an axis of the fixing member.

[0029] Optionally, the elastic member can be at least one of a planar vortex spring, a coil spring, a torsion spring, a tension spring or rubber.

[0030] As a second aspect of the present application, a power assisting device comprises the above-mentioned power assisters, and the number of the power assisters is at least one group, and a plurality of groups of the power assisters are coaxially arranged.

[0031] The second combining part comprises an avoiding groove, one end of the avoiding groove is provided with a pushing wall, and the adapter part in the movable member of each group of the power assisters is not equal in arc length to the corresponding pushing wall.

[0032] Optionally, the angle of rotation of the movable member in the first direction during force accumulation of each group of the power assisters is the same.

[0033] As a third aspect of the present application, a photovoltaic tracking system comprises the above-mentioned power assisting device.

[0034] The present application has the advantages of more accurately assisting a power source to drive a rotating shaft to work, safety and reliability, high automation degree, strong practicability, economy and environmental protection. The specific embodiments are as follows:

[0035] Firstly, when installing the elastic member, the A end of the elastic member is limited in the limiting part, and the elastic member is provided with a pre-tightening force according to the stress condition of the driving load (photovoltaic panel) driven by the rotating shaft, the B end of the elastic member is connected to the corresponding first connecting part, so that the A end and the B end of the elastic member are connected with the driven part, and the most suitable power assistance can be provided when the rotating shaft drives the corresponding load. Because different pre-tightening forces can be provided for the elastic member according to loads of different weights, more accurate auxiliary power source driving rotating shaft load work is realized.

[0036] Secondly, when the center of gravity of the load moves from high to low (i.e. the movable part rotates in the first direction), the adapter part abuts against the fixed part, so that the adapter part cooperates with the second combining part, which realizes that the elastic member can be deformed when the movable part rotates in the first direction, and realizes that the gravity of the load is overcome by the elastic member when the center of gravity of the load moves from high to low, and the adapter part cooperates with the first combining part through the abutment of the movable part to the adapter part and the free rotation of the movable part relative to the adapter part, so that the elastic member cannot continue to deform, so it is safe and reliable. And because the switching of the adapter part cooperating with the first combining part and the second combining part does not need human intervention, the degree of automation is high and the practicability is strong.

[0037] Thirdly, through the adapter part, when the center of gravity of the load moves from high to low, the elastic member is used to overcome the gravity of the load on the rotating shaft, and when the center of gravity of the load moves from low to high, the elastic force of the deformed elastic member is used to assist the power source to drive the load to rotate, so as to reduce the power of the power source, reduce the cost, and be more environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0038] The following drawings describe the exemplary embodiments disclosed in the present application in detail. The same reference signs in the drawings represent similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting, exemplary embodiments, and the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of the present application, and other embodiments can also achieve the purpose of the present application. It should be understood that the drawings are not drawn to scale. Among them:

[0039] Figure 1 is a schematic diagram of the power-assisted device in the embodiments of the present application;

[0040] Figure 2 is a partial exploded schematic diagram of the power-assisted device in the embodiments of the present application;

[0041] Figure 3 is Figure 2 is a schematic diagram of the energy storage unit in the embodiments of the present application;

[0042] Figure 4 Fig. 2 is a schematic view of the energy storage unit in the exploded state; Figure 2 Fig. 3 is a schematic view of the energy storage unit in the exploded state;

[0043] Figure 5 Fig. 4 is a schematic view of the energy storage unit in the exploded state; Figure 2 Fig. 5 is a schematic view of the energy storage unit in the exploded state;

[0044] Figure 6 Fig. 6 is a schematic view of the booster in the initial state;

[0045] Figure 7 Fig. 7 is a schematic view of the booster in the energy storage state.

[0046] The various signs in the figures are as follows:

[0047] 1, fixing member; 11, first connecting part; 12, second connecting part; 13, end cover;

[0048] 2, energy storage unit; 21, elastic member; 22, conversion structure; 221, adapter; 222, driven member; 223, limiting part; 224, first connecting part;

[0049] 3, movable member; 31, avoiding groove; 32, pushing wall;

[0050] D, first direction. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application. It can be understood that some technical means of the various embodiments described herein can be replaced or combined with each other without conflict.

[0052] In the description of the present application, if there are terms such as “first”, “second”, etc., they are only used to distinguish the described objects, and do not have any order or technical meaning. Therefore, the objects defined with “first”, “second”, etc. can be explicitly or implicitly included one or more objects. And, “one” or “a” and the like do not represent a quantity limit, but represent the existence of at least one, and “multiple” represents no less than two.

[0053] In the description of the present application, if there are terms such as "connection", "abutment", "installation", "fixation", "contact", "support", "accommodation" and the like, they should be understood in a broad sense. For example, "connection" can be separate connection or integral connection; can be direct connection or indirect connection through an intermediate medium; can be non-detachable connection or detachable connection; can be mechanical connection or electrical connection; or can be internal communication of two elements or interaction relationship between two elements. For another example, "abutment" can be direct abutment or indirect abutment through an intermediate medium. For another example, "accommodation" does not necessarily mean complete accommodation of the whole, and the concept also includes the case of partial accommodation with part protruding externally. For those skilled in the art, the specific meaning of the foregoing terms in the present application can be understood according to the specific circumstances.

[0054] In the description of the present application, if there are terms such as "A is connected to B in a rotatable manner" and the like, it means that A is connected to B directly or indirectly, and A can rotate relative to B.

[0055] In the description of the present application, reference to "one embodiment" or "some embodiments" and the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Therefore, the appearance of the phrases "in one embodiment", "in some embodiments", "in other some embodiments", "in yet some embodiments" and the like in different places in the specification does not necessarily all refer to the same embodiment, but means "one or more but not all embodiments", unless otherwise specifically emphasized.

[0056] As a first aspect of the present embodiment, as shown in Figures 1 to 7 The present embodiment discloses a booster, comprising:

[0057] A fixed part 1, wherein a first connecting part 11 is arranged on the fixed part 1;

[0058] A movable part 3, wherein the movable part 3 is rotatably connected with the fixed part 1, and a second connecting part is arranged on the movable part 3;

[0059] An energy storage unit 2, wherein the energy storage unit 2 comprises:

[0060] A resilient part 21, wherein an A end of the resilient part 21 is connected to the fixed part 1;

[0061] A conversion structure 22, wherein the conversion structure 22 is arranged between the fixed part 1 and the movable part 3, and the conversion structure 22 comprises a conversion part 221, wherein the conversion part 221 is matched with the first connecting part 11 or the second connecting part;

[0062] The conversion structure 22 further comprises:

[0063] The limiting portion 223 is used to limit the end A of the elastic member 21;

[0064] The first connecting portion 224 is used to connect to the B end of the elastic member 21;

[0065] In the initial state, the A end of the elastic member 21 is connected to the limiting portion 223, and the B end of the elastic member 21 is pre-tightened and connected to the first connecting portion 224. Then, the fixing member 1 is connected to the A end of the elastic member 21. Under the contact of the fixing member 1, the adapter portion 221 cooperates with the second connecting portion.

[0066] When storing energy, the movable member 3 rotates in the first direction, driving the conversion structure 22 to rotate via the second coupling portion, and the conversion structure 22 pulls the elastic member 21 to deform. When the predetermined position is reached and the deformation of the elastic member 21 reaches a predetermined value, the adapter 221 separates from the second coupling portion and, under the action of the movable member 3, cooperates with the first coupling portion 11, and the elastic member 21 is in an energy storing state.

[0067] When releasing energy, the movable part 3 rotates in the opposite direction of the first direction. When it reaches a predetermined position, the adapter part 221 disengages from the first coupling part 11 and engages with the second coupling part again. The elastic force of the elastic part 21 acts on the second coupling part through the adapter part 221, thereby driving the movable part 3 to continue to rotate in the opposite direction of the first direction until the elastic part 21 returns to its initial state.

[0068] It should be noted that, in this embodiment, Figures 3 to 7 As shown, the elastic member 21 is a flat scroll spring; it should be understood that, in the present application, the elastic member 21 refers to a member that can be deformed under the action of an external force, and as the elastic member 21 is deformed, it has a tendency to recover to its shape before being acted upon by the external force, that is, in the present embodiment, the elastic member 21 is used to overcome the force of the load on the rotating shaft, and can assist the power source to drive the load to perform the desired movement through the rotating shaft; therefore, although a flat scroll spring is shown in the present embodiment, in fact, the elastic member 21 can also be a coil spring, a torsion spring, a tension spring, etc., or a member of other shapes made of elastic materials such as rubber that can meet the requirements of the booster proposed in the present application, or a combination of coil springs, torsion springs, tension springs or other elastic members.

[0069] It is to be noted that in the present embodiment, the fixed member 1 is used to connect with the outside and is used to connect the A end of the elastic member 21; similarly, the movable member 3 can also be used to connect with the outside and is rotatably connected with the fixed member 1. When the booster of the present application is used in a rotating shaft, the fixed member 1 and the support end of the rotating shaft can be fixedly connected, and the movable member 3 and the load driven by the rotating shaft can be fixedly connected; or, the movable member 3 and the support end of the rotating shaft can be fixedly connected, and the fixed member 1 and the load driven by the rotating shaft can be fixedly connected; or, any one or all of the fixed member 1 and the movable member 3 can be composed of the support end of the rotating shaft and the load driven by the rotating shaft, i.e., the fixed member 1 and / or the movable member 3 can be integrated with the components other than the accumulator of the present application.

[0070] It is to be noted that in the present embodiment, the conversion structure 22 is used to limit the movement direction of the B end of the elastic member 21, and is connected with the movable member 3 when energy needs to be stored or released, and the two ends (A end and B end) of the elastic member 21 are connected with the fixed member 1 in the energy storage state, so that the energy accumulated by the deformation of the elastic member 21 is not released; therefore, the conversion structure 22 can be directly set as a shape meeting the above requirements, or can be an independent component connected with the B end of the elastic member 21.

[0071] Further, in the present embodiment, in order to connect the conversion structure 22 with the fixed member 1 or the movable member 3, the conversion structure 22 is provided with a conversion portion 221, which is embedded in the second combination portion under the abutting action of the fixed member 1, or is embedded in the first combination portion 11 under the abutting action of the movable member 3; for this purpose:

[0072] As shown in Figure 2 , Figure 6 and Figure 7 , first, a channel for the movement of the conversion portion 221 is formed between the movable member 3 and the fixed member 1.

[0073] Secondly, the length H between the point for abutting with the fixed member 1 and the point for abutting with the movable member 3 in the conversion portion 221 needs to be greater than the width of the channel allowing the movement of the conversion portion 221.

[0074] Finally, the first combination portion 11 is provided on the fixed member 1, as shown in Figures 3 to 7As shown in the drawings, the second connecting part is arranged on the movable part 3; when the adapter 221 abuts against the fixed part 1, the adapter 221 can be embedded into the second connecting part on the movable part 3, so that the movable part 3 and the conversion structure 22 can rotate freely relative to the fixed part 1, and the movable part 3 drives the A end of the elastic part 21 to rotate through the conversion structure 22, so that the elastic part 21 is deformed; or when the adapter 221 abuts against the movable part 3, the adapter 221 can be embedded into the first connecting part 11 on the fixed part 1, so that the movable part 3 can rotate freely relative to the conversion structure 22 and the fixed part 1, that is, the conversion structure 22 and the fixed part 1 are relatively static; at this time, since the two ends of the elastic part 21 are connected with the fixed part 1 and the conversion structure 22 respectively, the energy accumulated in the elastic part 21 due to deformation cannot be released.

[0075] It should be noted that, in the embodiment, as shown in the drawings, Figure 2 , Figure 6 and Figure 7 , the first connecting part 11 is a groove or notch arranged on the fixed part 1; as shown in the drawings, Figures 3 to 7 , the second connecting part is an avoiding groove 31 arranged on the movable part 3; or the distance between the avoiding groove 31 of the movable part 3 and the fixed part 1 is not less than the size H of the adapter 221, and the distance between the groove or notch of the fixed part 1 and the movable part 3 is not less than the size H of the adapter 221.

[0076] It should be noted that the adapter 221 can be arranged in different shapes on the basis of meeting its basic functions.

[0077] Further, in the embodiment, in order to reduce the friction between the adapter 221 and the fixed part 1 or the movable part 3 and improve the working efficiency of the application, the contact surface of the adapter 221 with the fixed part 1 or the movable part 3 is a smooth curved surface, and / or the adapter 221 is provided with a roller and / or a ball, and the adapter 221 contacts the fixed part 1 or the movable part 3 through the roller and / or the ball.

[0078] It should be noted that, in order to more conveniently arrange the adapter 221 and guide the deformation of the elastic part 21, the conversion structure 22 further comprises a driven part 222, the driven part 222 is arranged between the fixed part 1 and the movable part 3, the adapter 221 is hinged on the driven part 222, and the adapter 221 can rotate freely relative to the driven part 222 around the hinge shaft; when the conversion structure 22 comprises the driven part 222, the B end of the elastic part 21 is connected with the driven part 222.

[0079] It should be noted that in the present embodiment, the driven member 222 is arranged between the fixed member 1 and the movable member 3, and can be directly rotationally connected with the fixed member 1 or the movable member 3, or connected with the fixed member 1 or the movable member 3 through a bearing.

[0080] Further, when the conversion structure 22 comprises the driven member 222, as shown in the figure, the limiting portion 223 is a limiting column arranged on the driven member 222. In order to more conveniently limit the A end of the elastic member 21 through the limiting column (limiting for adjusting the pre-tightening force), it is most preferred that a limiting portion 223 cooperating with the limiting column is arranged at the A end or near the A end of the elastic member 21. Through the cooperation of the limiting column and the limiting portion 223, the driven member 222 is prevented from rotating in the direction opposite to the pre-tightening direction of the elastic member 21 in the initial state. Figures 5 to 7

[0081] It should be noted that in the present embodiment, the limiting portion 223 is a limiting column arranged on the driven member 222. In fact, through the cooperation between the driven member 222 or the conversion structure 22 and the fixed member 1, many structures can be realized to keep the elastic member 21 having a pre-tightening force. For example, the limiting portion 223 is a limiting sliding groove arranged on the driven member 222, the length direction of the limiting sliding groove is consistent with the circumferential direction of the fixed member 1, and a sliding block cooperating with the limiting sliding groove is further included, and the sliding block is detachably connected with the fixed member 1 through a connecting member.

[0082] Further, when the conversion structure 22 comprises the driven member 222, the first connecting portion 224 is arranged on the driven member 222.

[0083] Further, in the present embodiment, the number of the first connecting portions 224 is at least one set, and multiple sets of the first connecting portions 224 are arranged in a ring shape along the axis of the fixed member 1.

[0084] As preferred, as shown in the figure, the first connecting portion 224 is arranged in multiple sets. Through the limiting portion 223 limiting the position of the A end of the elastic member 21, the elastic member 21 can be pre-tightened, and in combination with the load driven by the rotating shaft, the pre-tightening degree of the elastic member 21 is adjusted. The B end of the elastic member 21 is connected to the corresponding first connecting portion 224, so that the elastic member 21 is stably kept on the driven member 222 in a state of having an optimal pre-tightening force, that is, the pre-tightening force of the elastic member 21 is more convenient to set. Figure 5

[0085] ​​Further, in the embodiment, in order to facilitate the connection of the A end of the elastic member 21 with the fixing member 1, the fixing member 1 is provided with a second connecting portion 12 for connecting the A end of the elastic member 21; when assembling the booster proposed in the embodiment, only the A end of the elastic member 21, which is previously limited by the limiting portion 223, is connected with the second connecting portion 12 of the fixing member 1, that is, the A end of the elastic member 21 is fixedly connected with the second connecting portion 12, and at the same time, in the initial state, the A end of the elastic member 21 is also limited by the limiting portion 223 to maintain the pre-tightening force.

[0086] It should be noted that, in the embodiment, in order to facilitate the rotationally cooperative connection of the movable member 3 with the fixing member 1, as shown in Figure 1 and Figure 2 When the fixing member 1 is in a cylindrical shape and is sleeved outside the energy storage unit 2, end covers 13 can be arranged at the openings of the two ends of the fixing member 1, and the fixing member 1 and the movable member 3 are rotationally cooperatively connected through the end covers 13. At the same time, in order to ensure that the movable member 3 can be connected with external components, at least one of the end covers 13 is provided with a through hole, and at this time, an external rotating shaft can be connected with the movable member 3 through the through hole. Further, when the end cover 13 is arranged, a closed chamber for accommodating the elastic member 21 can be formed between the movable member 3 and the fixing member 1, which not only avoids the rusting of the elastic member 21 due to the influence of the natural environment, prolongs the service life of the booster proposed in the embodiment, but also avoids accidental injuries caused by accidental breakage of the elastic member 21, and improves the safety of the booster proposed in the embodiment.

[0087] It should be noted that, in the embodiment, only the case that the booster is provided with one set of energy storage units 2 is described, and in fact, multiple sets of energy storage units 2 can be arranged in the same booster, and when multiple sets of energy storage units 2 are arranged, the multiple sets of energy storage units 2 are coaxially arranged.

[0088] As a second aspect of the embodiment, as shown in Figures 1 to 7 A booster device includes at least one set of the booster as described above, and multiple sets of the booster are coaxially arranged. When multiple sets of the booster as described above are arranged, the structures of the multiple sets of the booster are basically the same, and the difference lies in that the arc lengths of the transfer portions 221 in different sets of the booster from the corresponding push walls 32 are not equal.

[0089] It should be understood that when multiple sets of the booster are coaxially arranged, the movable members 3 in different sets are either fixedly connected with each other, for example, are engaged with each other, or are connected as a whole through a connecting member, or the movable members 3 in the multiple sets of the booster are directly arranged as a whole.

[0090] Similarly, the fixed parts 1 in different groups are either fixedly connected to each other, for example, are engaged with each other, or are connected to each other by connecting parts, or are directly set to be integrated.

[0091] Further, in the embodiment, the angle of rotation of the movable part 3 in each group of the booster along the first direction is the same during energy storage.

[0092] It should be understood that, since the arc length of the transition part 221 in each group of the booster from the pushing wall 32 of the corresponding movable part 3 is not equal, the time when the transition structure 22 in each group of the booster ends sliding (i.e., the transition part 221 slides to abut against the pushing wall 32) is not equal, and therefore, when the movable part 3 rotates in the first direction, the elastic part 21 in each group of the booster in the booster device proposed in the embodiment starts to store energy in turn until the elastic part 21 in each group of the booster reaches the energy storage state.

[0093] At the same time, since the angle of rotation of the movable part 3 in each group of the booster along the first direction is the same during energy storage, that is, the elastic part 21 in each group of the booster ends energy storage in turn in the order of starting energy storage and reaches the energy storage state, and therefore, the deformation of the elastic part 21 in each group of the booster is the same.

[0094] Similarly, since the time when the elastic part 21 ends energy storage is different, therefore, during energy release, the time when the booster assists the external power source to drive the rotating shaft is also different.

[0095] Therefore, the booster device proposed in the embodiment, by setting the energy storage time of each group of the booster, during energy storage, first increases the number of boosters in the energy storage state in turn, so that the force of the booster device assisting the external power source to drive the rotating shaft increases at a faster speed, and after reaching the desired maximum value (such as when the center of mass of the load driven by the rotating shaft is in a horizontal position with the axis of the rotating shaft), the number of boosters in the energy storage state is reduced in turn, so that the force of the booster device assisting the external power source to drive the rotating shaft decreases at a faster speed, so that the force of the booster device proposed in the embodiment on the rotating shaft is closer to the force of the load on the rotating shaft, which reduces the power consumption of the external power source, that is, more accurately assists the power source to drive the rotating shaft load, and at the same time, is more practical, more economical and environmentally friendly.

[0096] As a third aspect of the embodiment, in order to more clearly describe the application of the power assisting device and the power assister, a photovoltaic tracking system is taken as an example. The photovoltaic tracking system comprises a vertical rod, a power source, a rotating shaft and a photovoltaic panel. The supporting end of the rotating shaft is fixedly connected to the vertical rod. One end of the photovoltaic panel is arranged at the output end of the rotating shaft. The power source is connected to the driving end of the rotating shaft. The photovoltaic panel is driven to move by the rotating shaft to realize tracking of light and improve power generation efficiency. In order to facilitate description, the fixing member 1 is fixedly connected to the supporting end of the rotating shaft, and the movable member 3 is connected to the output end of the rotating shaft.

[0097] Firstly, when assembling the power assister, the A end of the elastic member 21 is connected to the limiting portion 223. The elastic member 21 is pre-tightened through the B end of the elastic member 21, and the B end of the pre-tightened elastic member 21 is connected to the first connecting portion 224, so as to obtain the energy storage unit 2. At this time, the two ends of the elastic member 21 are connected to the conversion structure 22. By arranging the limiting portion 223 on the conversion structure 22, it is easier to apply pre-tightening force to the elastic member 21 when assembling the power assister, that is, the assembly is more convenient. Then, the energy storage unit 2 is arranged between the fixing member 1 and the movable member 3. The A end of the elastic member 21 is connected to the second connecting portion 12 of the fixing member 1. At the same time, the adapter portion 221 is embedded in the second combining portion on the movable member 3 under the abutment of the fixing member 1.

[0098] Secondly, the movable member 3 is connected to the output end of the rotating shaft, and the fixing member 1 is fixedly connected to the supporting end of the rotating shaft.

[0099] When storing energy, the power source drives the photovoltaic panel to rotate around the rotating shaft. The photovoltaic panel rotates in the first direction from the vertical upward state, drives the movable member 3 to rotate in the first direction, drives the conversion structure 22 to rotate through the embedding of the second combining portion and the adapter portion 221, and the conversion structure 22 drags the elastic member 21 to deform (at this time, the A end of the elastic member 21 is only connected to the fixing member 1, and the limiting portion 223 is disconnected from the A end of the elastic member 21). The elastic member 21 recovers the energy exceeding the power source during the process. When reaching the predetermined position and the deformation of the elastic member 21 reaches the predetermined value, the adapter portion 221 is separated from the second combining portion and is embedded in the first combining portion 11 under the abutment of the movable member 3. The elastic member 21 is in the energy storage state.

[0100] When releasing energy, the photovoltaic panel rotates back from the vertical downward state, drives the movable member 3 to rotate in the opposite direction of the first direction, and when reaching the predetermined position, the adapter portion 221 is disconnected from the first combining portion 11 and is embedded in the second combining portion again. The elastic force generated by the deformation of the elastic member 21 acts on the movable member 3 through the adapter portion 221 to assist the photovoltaic panel to rotate back.

Claims

1. An assist device characterized by comprising: include: A fixing member, wherein the fixing member is provided with a first coupling portion; A movable member, which is in rotational cooperation with the fixed member, and a second coupling portion is provided on the movable member; An energy storage unit, comprising: an elastic member, the elastic member having an A end and a B end, the A end of the elastic member being connected to the fixing member; a conversion structure, provided between the fixed member and the movable member, the conversion structure comprising a transition portion, the transition portion being adapted to cooperate with the first combining portion or the second combining portion; The conversion structure further includes: A limiting portion, used to limit the end A of the elastic member; A first connecting portion, used to connect to the B end of the elastic member; In the initial state, the A end of the elastic member is connected to the limiting portion. After the elastic member is pre-tightened, the B end of the elastic member is connected to the first connecting portion, and the fixing member is connected to the A end of the elastic member. Under the contact of the fixing member, the transition portion cooperates with the second coupling portion. When accumulating force, the movable member rotates in the first direction, driving the conversion structure to rotate via the second coupling portion, and the conversion structure pulls the elastic member to deform. When the predetermined position is reached and the deformation of the elastic member reaches a predetermined value, the adapter separates from the second coupling portion and, under the action of the movable member, cooperates with the first coupling portion, and the elastic member is in an energy-accumulating state. When releasing energy, the movable part rotates in the opposite direction of the first direction. When reaching a predetermined position, the adapter part disengages from the first combining part and engages with the second combining part again. The elastic force of the elastic part acts on the second combining part through the adapter part, thereby driving the movable part to continue to rotate in the opposite direction of the first direction until the elastic part returns to its initial state.

2. The booster of claim 1, wherein The conversion structure includes a follower, and the B end of the elastic member is connected to the follower.

3. The booster of claim 2, wherein The limiting portion is a limiting column provided on the follower, and the end proximal to A of the elastic member is provided with a limiting portion that cooperates with the limiting column; Alternatively, the limiting portion is a limiting groove provided on the follower, the length direction of the limiting groove is consistent with the circumference of the fixed member, and also includes a slider that cooperates with the limiting groove, and the slider is detachably connected to the fixed member through a connecting member.

4. The booster of claim 1 wherein, The first combining portion is a groove or a notch provided on the fixing member, and the second combining portion is a groove or a notch provided on the movable member.

5. The booster of claim 4 wherein, The contact surface of the adapter portion for contacting the fixed part or the movable part is a smooth curved surface. and / or, The transition part is provided with a roller and / or a ball, and the transition part is in contact with the fixed part or the movable part through the roller and / or the ball.

6. The booster of claim 1 wherein, The number of the first connecting parts is at least one group, and the multiple groups of the first connecting parts are distributed in a circular array along the axis of the fixing member.

7. A booster according to any one of claims 1-6, characterised in that The elastic member may be at least one of a planar scroll spring, a coil spring, a torsion spring, a tension spring or rubber.

8. An assisting device, characterized in that The booster comprises the booster according to any one of claims 1 to 7, wherein the number of the boosters is at least one group, and the multiple groups of boosters are coaxially arranged; The second connecting part comprises an avoiding slot, one end of the avoiding slot is provided with a pushing wall, and the arc length of the adapter in the movable piece of each group of the power assisting device from the corresponding pushing wall is not equal.

9. The assistive device of claim 8, wherein, The angle of the movable piece of each group of the power assisting device rotating in the first direction is the same when accumulating force.

10. A photovoltaic tracking system characterized by, The power assisting device comprises the power assisting device as claimed in claim 8 or 9.

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