WO2024008146A1

WO2024008146A1 - Reciprocating transmission mechanism and power apparatus

Info

Publication number: WO2024008146A1
Application number: PCT/CN2023/106059
Authority: WO
Inventors: 傅珂珂; 李进
Original assignee: 浙江千机智能科技有限公司
Priority date: 2022-07-06
Filing date: 2023-07-06
Publication date: 2024-01-11
Also published as: CN217814829U

Abstract

A reciprocating transmission mechanism (10), comprising a transmission shaft (100), a reciprocating sleeve (200), limiting bodies (300), a balancing sleeve (400) and balancing bodies (500). The reciprocating sleeve and the balancing sleeve are both sleeved on the transmission shaft and are arranged opposite each other; the limiting bodies are positioned on one of an outer wall of the transmission shaft and an inner wall of the reciprocating sleeve, a reciprocating guide rail is arranged on the other one of the outer wall of the transmission shaft and the inner wall of the reciprocating sleeve; the balancing bodies are positioned on one of the outer wall of the transmission shaft and an inner wall of the balancing sleeve, and a balancing guide rail, which is arranged at an interval from the reciprocating guide rail, is positioned on the other one of the outer wall of the transmission shaft and the inner wall of the balancing sleeve; and the track of the balancing guide rail and the track of the reciprocating guide rail are both closed curves around the axis of the transmission shaft. When the transmission shaft rotates, the balancing bodies move along the track of the balancing guide rail, and the limiting bodies move along the track of the reciprocating guide rail, such that the balancing sleeve and the reciprocating sleeve move in a direction toward each other or away from each other along the axis of the transmission shaft, the force generated by the balancing sleeve and the force generated by the reciprocating sleeve are mutually offset, and the axial vibration of the transmission shaft caused by independent arrangement of the reciprocating sleeve is thus avoided, thereby improving the transmission stability. In addition, further provided is a power apparatus comprising the reciprocating transmission mechanism.

Description

Reciprocating transmission mechanism and power equipment

Technical field

The utility model relates to the technical field of mobile structures, in particular to reciprocating transmission mechanisms and power equipment.

Background technique

In the mechanical field, it is often necessary to convert rotational motion into linear reciprocating motion. Traditional reciprocating structures such as crank slider mechanism, crank swing arm mechanism, linear motor or servo motor screw reciprocating mechanism, etc. For crank slider mechanism and crank swing arm mechanism There is a deflection angle problem, and there is a problem of uneven force on the linear motor or servo motor screw reciprocating mechanism, which in turn affects the stability of the reciprocating transmission.

Utility model content

Based on this, it is necessary to provide a reciprocating transmission mechanism and power equipment that ensures the stability of reciprocating transmission in response to the above problems.

A reciprocating transmission mechanism. The reciprocating transmission mechanism includes a transmission shaft, a reciprocating sleeve, a limiting body, a balance sleeve and a balance body. The transmission shaft is rotatable around its own axis; the reciprocating sleeve is sleeved on the transmission shaft; The limiting body is positioned on one of the outer wall of the transmission shaft and the inner wall of the reciprocating sleeve, and a reciprocating guide rail is provided on the other. The trajectory of the reciprocating guide rail is around the axis of the transmission shaft. closed curve, the limiting body cooperates with the reciprocating guide rail guide and can move along the trajectory of the reciprocating guide rail; the balance sleeve is sleeved on the transmission shaft and is located on one side of the reciprocating sleeve side; the balance body is positioned on one of the outer wall of the transmission shaft and the inner wall of the balance sleeve, and the other is provided with a balance guide rail spaced apart from the reciprocating guide rail. The balance guide rail The trajectory is a closed curve around the axis of the transmission shaft. The balance body cooperates with the balance guide guide and can move along the balance The track of the guide rail moves, and during the rotation of the transmission shaft, the balance sleeve and the reciprocating sleeve can move relative to or opposite to each other along the axial direction of the transmission shaft.

In one embodiment, the trajectory of the reciprocating guide rail around the axis of the transmission shaft is a sinusoidal curve, and the trajectory of the balance guide rail around the axis of the transmission shaft is a sinusoidal curve; the wave crest of the balance guide rail is in line with the The wave troughs of the reciprocating guide rail are opposite to each other, the wave troughs of the balance guide rail are opposite to the wave crests of the reciprocating guide rail, and the limiting body and the balance body are relatively spaced apart.

In one embodiment, the trajectory of the reciprocating guide rail around the axis of the transmission shaft includes at least two complete and continuous sinusoidal cycles, and the number of limiting bodies provided on the reciprocating guide rail is less than or is equal to the number of sinusoidal cycles of the reciprocating guide rail, and the limiting bodies on the reciprocating guide rail are evenly spaced around the axis of the transmission shaft; the balance guide rail has the same structure as the reciprocating guide rail, and the balance guide rail has the same structure as the reciprocating guide rail. The number of bodies is consistent with that of the limiting body, and one of the limiting bodies is arranged opposite to one of the balancing bodies along the axial direction of the transmission shaft.

In one embodiment, the reciprocating guide rail is a reciprocating groove, the reciprocating groove is a closed curved groove around the axis of the transmission shaft, the limiting body includes a universal ball, and the universal ball can roll is disposed in the reciprocating groove and can move in the reciprocating groove.

In one embodiment, the structure of the balance body is consistent with that of the limiting body, the balance guide rail is a balance groove, and the structure of the balance groove is consistent with that of the reciprocating groove.

In one embodiment, a first oil guide groove is provided on the inner wall of the reciprocating groove, and the trajectory of the first oil guide groove is consistent with the trajectory of the reciprocating groove; a second oil guide groove is provided on the inner wall of the balance groove. Oil groove, the trajectory of the second oil guide groove is consistent with the trajectory of the balance groove.

In one embodiment, the mass of the balancing sleeve is greater than or equal to the mass of the reciprocating sleeve.

In one embodiment, the reciprocating transmission mechanism further includes a power source and an output shaft. The power source is connected to an end of the transmission shaft close to the balance sleeve. The output shaft is connected to the reciprocating shaft. The sleeve faces away from one end of the balance sleeve, and the power source is used to drive the transmission shaft to rotate.

In one embodiment, the reciprocating transmission mechanism further includes a guide member. A first matching structure is provided on the outer wall of the reciprocating sleeve. A second matching structure is provided on the outer wall of the balance sleeve. The guide member At the same time, it guides and cooperates with the first matching structure and the second matching structure, and the guiding direction of the guide member and the first matching structure and the second matching structure is the axial direction of the transmission shaft; and / or

In one embodiment, the reciprocating transmission mechanism further includes a housing, and the transmission shaft, the reciprocating sleeve and the balance sleeve are all arranged in the housing.

In the above-mentioned reciprocating transmission mechanism, the reciprocating sleeve and the balance sleeve are sleeved on the transmission shaft and are arranged oppositely. Since the limiting body is positioned on one of the outer wall of the transmission shaft and the inner wall of the reciprocating sleeve, a reciprocating sleeve is provided on the other. Guide rail, one of the outer wall of the transmission shaft and the inner wall of the balance sleeve has a balance body positioned on it, and the other is provided with a balance guide rail with reciprocating guide rails spaced apart, and the trajectories of the balance guide rail and the reciprocating guide rail are around the transmission shaft. The closed curve of the axis. When the driving transmission shaft rotates, the balance body moves along the trajectory of the balance guide rail, and the limiting body moves along the trajectory of the reciprocating guide rail, so that the balance sleeve and the reciprocating sleeve move relative or oppositely along the axis of the transmission shaft, thereby causing the balance sleeve to move The force generated by the acceleration can offset the force generated by the acceleration of the reciprocating sleeve to avoid axial vibration of the transmission shaft caused by setting the reciprocating sleeve separately. Through the cooperation of the balance body and the balance sleeve, the axial vibration of the reciprocating sleeve and the transmission shaft can be avoided and the stability of the transmission can be improved.

A kind of power equipment, the power equipment includes the reciprocating transmission mechanism as mentioned above.

Description of the drawings

The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

In order to explain the technical solutions in the embodiments of the present utility model more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some implementations of the utility model. For example, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Furthermore, the drawings are not drawn to a 1:1 scale, and the relative sizes of various elements in the drawings are drawn by way of example only and not necessarily to true scale. In the attached picture:

Figure 1 is a schematic structural diagram of a reciprocating transmission mechanism in an embodiment;

Figure 2 is an exploded view of the reciprocating transmission mechanism shown in Figure 1;

Figure 3 is a structural front view of the transmission shaft, limiting body and balance body in Figure 2

Figure 4 is a cross-sectional view of the reciprocating transmission mechanism shown in Figure 1 from one perspective;

FIG. 5 is a cross-sectional view of the reciprocating transmission mechanism shown in FIG. 1 from another perspective.

Explanation of reference symbols:

10. Reciprocating transmission mechanism; 100. Transmission shaft; 200. Reciprocating sleeve; 210. First matching structure; 212. First guide hole; 300. Limiting body; 310. Universal ball; 320. Limiting seat; 330. Ball; 400, balance sleeve; 410, second matching structure; 412, second guide hole; 500, balance body; 510, balance ball; 520, balance seat; 530, rolling element; 600, reciprocating groove; 610, first Oil guide groove; 700, balance groove; 710, second oil guide groove; 800, housing; 810, output hole; 820, input hole; 830, guide piece; 900, output shaft.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation modes of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention can be used in many ways different from those described here. It can be implemented in other ways as described above. Those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

Referring to Figures 1 to 3, the reciprocating transmission mechanism 1010 in one embodiment of the present invention can at least ensure the stability of transmission. Specifically, the reciprocating transmission mechanism 10 includes a transmission shaft 100, a reciprocating sleeve 200, a limiting body 300, a balance sleeve 400 and a balance body 500.

The transmission shaft 100 can rotate around its own axis; the reciprocating sleeve 200 is sleeved on the transmission shaft 100, and the limiting body 300 is positioned on one of the outer wall of the transmission shaft 100 and the inner wall of the reciprocating sleeve 200, and the other is There is a reciprocating guide rail. The trajectory of the reciprocating guide rail is a closed curve around the axis of the transmission shaft 100. The limiting body 300 cooperates with the reciprocating guide rail guide and can move along the trajectory of the reciprocating guide rail; the balance sleeve 400 is set on the transmission shaft 100. on one side of the reciprocating sleeve 200; the balance body 500 is positioned on one of the outer wall of the transmission shaft 100 and the inner wall of the balance sleeve 400, and the other is provided with a balance guide rail spaced apart from the reciprocating guide rail. The trajectory of the balance guide rail is a closed curve around the axis of the transmission shaft 100. The balance body 500 cooperates with the balance guide rail guide and can move along the trajectory of the balance guide rail. During the rotation of the transmission shaft 100, the balance sleeve 400 and the reciprocating sleeve 200 They can move relatively or oppositely along the axis direction of the transmission shaft 100 .

Referring to Figure 4 together, the reciprocating transmission mechanism 10, the reciprocating sleeve 200 and the balance sleeve 400 are all sleeved on the transmission shaft 100 and arranged oppositely. Since one of the outer wall of the transmission shaft 100 and the inner wall of the reciprocating sleeve 200 is The limiting body 300 is positioned, and the other is provided with a reciprocating guide rail. The balancing body 500 is positioned on one of the outer wall of the transmission shaft 100 and the inner wall of the balance sleeve 400, and the other is provided with reciprocating guide rails spaced apart. Balance guide rail, and the trajectories of the balance guide rail and the reciprocating guide rail are closed curves around the axis of the transmission shaft 100 . When the transmission shaft 100 is driven to rotate, the balance body 500 moves along the trajectory of the balance guide rail, and the limiting body 300 moves along the trajectory of the reciprocating guide rail, so that the balance sleeve 400 and the reciprocating sleeve 200 are opposite or relative to each other along the axis direction of the transmission shaft 100 . The force generated by the acceleration of the balance sleeve 400 and the force generated by the acceleration of the reciprocating sleeve 200 can offset each other, thereby avoiding the impact on the transmission caused by setting the reciprocating sleeve 200 alone. The shaft 100 generates an axial vibration force. Through the cooperation of the balance body 500 and the balance sleeve 400, the axial vibration of the reciprocating sleeve 200 and the transmission shaft 100 can be avoided, and the stability of the transmission can be improved.

In this embodiment, the balance guide rail and the reciprocating guide rail are both disposed on the outer wall of the transmission shaft 100 . The limiting body 300 is positioned on the inner wall of the reciprocating sleeve 200 , and the balancing body 500 is positioned on the inner wall of the balancing sleeve 400 . This allows the limiting body 300 and the balancing body 500 to move relative to or in opposite directions synchronously with respect to the transmission shaft 100, further allowing the forces of the limiting body 300 and the balancing body 500 that the transmission shaft 100 receives to cancel each other out.

In another embodiment, the balance guide rail can also be disposed on the inner wall of the balance sleeve 400 , and the reciprocating guide rail is disposed on the inner wall of the reciprocating sleeve 200 . The limiting body 300 and the balancing body 500 are both positioned on the outer wall of the transmission shaft 100 and are spaced apart along the axial direction of the transmission shaft 100 .

Referring to Figures 2, 3 and 4, in one embodiment, the trajectory of the reciprocating guide rail around the axis of the transmission shaft 100 is a sinusoidal curve. When the transmission shaft 100 rotates, the limiting body 300 moves along the trajectory of the reciprocating guide rail. The reciprocating guide rail arranged in a sinusoidal trajectory ensures that the limiting body 300 can move smoothly on the reciprocating guide rail and ensures that the reciprocating sleeve 200 moves reciprocally. smooth.

In this embodiment, the trajectory of the balance guide rail around the axis of the transmission shaft 100 is a sinusoidal curve; the wave crest of the balance guide rail is opposite to the wave trough of the reciprocating guide rail, and the wave trough of the balance guide rail is opposite to the wave crest of the reciprocating guide rail. The limiting body 300 and the balancing body 500 are relatively spaced apart from each other. When the limiting body 300 moves in one direction on the reciprocating guide rail, the balance body 500 can move in the opposite direction on the balancing guide rail, thereby enabling the reciprocating sleeve 200 and the balancing sleeve 400 to move in different directions.

In other embodiments, the trajectories of the balance guide rail and the reciprocating guide rail can also be in other trajectory shapes, as long as it can ensure that during the rotation of the transmission shaft 100, the limiting body 300 and the balance body 500 ensure that the reciprocating sleeve 200 and the balance sleeve 400 are along the same path. Just move in different directions.

In one embodiment, the trajectory of the reciprocating guide rail along the axis around the transmission shaft 100 includes at least two complete and continuous sinusoidal cycles, and the number of limiting bodies 300 provided on the reciprocating guide rail is less than or equal to The number of sinusoidal cycles of the reciprocating guide rail is 1, and the limiting bodies 300 on the reciprocating guide rail are evenly spaced around the axis of the transmission shaft 100 .

For example, in this embodiment, the trajectory of the reciprocating guide rail includes two sinusoidal curves, and the number of limiting bodies 300 is also two. The two limiting bodies 300 can be simultaneously arranged at the valley positions of the two sinusoidal curves of the reciprocating guide rail or They are arranged at the peak positions of two sinusoidal curves at the same time, and at this time, the two limiting bodies 300 are evenly arranged around the axis of the transmission shaft 100 . Through the cooperation of the evenly arranged limiting bodies 300 and the sinusoidal reciprocating guide rails, the transmission stability can be further improved.

In other embodiments, the trajectory of a single reciprocating guide rail around the axis of the transmission shaft 100 may include three or other numbers of complete and continuous sinusoidal cycles, and the number of corresponding limiting bodies 300 may be three or other numbers, Each sinusoidal curve is provided with a limiting body 300 to ensure stable reciprocating movement of the reciprocating shaft 200 .

In this embodiment, the balance guide rail has the same structure as the reciprocating guide rail, the number of balance bodies 500 and limiting bodies 300 is consistent, and a limiting body 300 is aligned with a balance body 500 along the axis direction of the transmission shaft 100 Relative settings. By setting the balance guide rail to be consistent with the reciprocating guide rail, the smoothness of the balance body 500 moving on the balance guide rail can be ensured, and the balance body 500 can effectively balance the axial acceleration generated by the limiting body 300 to avoid vibration.

In one embodiment, the reciprocating guide rail is a reciprocating groove 600. The reciprocating groove 600 is a closed curved groove around the axis of the transmission shaft 100. The limiting body 300 includes a universal ball 310. The universal ball 310 is rollably disposed in the reciprocating groove 600. and can move within the reciprocating groove 600. The reciprocating groove 600 is used to limit and guide the universal ball 310 to ensure that the universal ball 310 can move stably along the trajectory of the reciprocating groove 600 .

Specifically, the limiting body 300 is positioned on the inner wall of the reciprocating sleeve 200, and a first positioning groove is provided on the inner wall of the reciprocating sleeve 200; part of the universal ball 310 is rollably disposed in the first positioning groove, and the other part passes through the first positioning groove. Located in the reciprocating tank 600. Since the universal ball 310 can roll, the reciprocating sleeve 200 is relatively The reciprocating movement of the transmission shaft 100 is achieved by utilizing the rolling friction of the universal ball 310 instead of the sliding friction of the reciprocating sleeve 200 relative to the transmission shaft 100, thereby further ensuring transmission efficiency.

In another embodiment, if the limiting body 300 is positioned on the outer wall of the transmission shaft 100, then the first positioning groove is opened on the inner wall of the reciprocating sleeve 200.

In one embodiment, the limiting body 300 further includes a limiting seat 320 and a plurality of balls 330. The plurality of balls 330 are disposed in the limiting seat 320. The universal ball 310 is partially penetrated in the limiting seat 320 and connected with the limiting seat 320. The ball 330 is in contact, and both the universal ball 310 and the ball 330 can roll relative to the limiting seat 320 . Specifically, the limiting seat 320 is disposed in the first positioning groove. When the universal ball 310 is rolling, a plurality of balls 330 are used to realize rolling friction between the universal ball 310 and the limiting seat 320, which further ensures the rolling stability of the universal ball 310 and avoids contact between the universal ball 310 and the third Direct contact between the inner walls of certain slots.

In other embodiments, the limiting seat 320 may be omitted, and the plurality of balls 330 may be directly disposed in the first positioning groove. The universal ball 310 may pass through the first positioning groove and contact the balls 330 .

In other embodiments, the reciprocating guide rail can also be a reciprocating protrusion. The trajectory of the reciprocating protrusion is a closed curved protrusion around the axis of the transmission shaft 100, and the peaks and troughs of the curved protrusion are spaced apart along the axis of the transmission shaft 100. The limiting body 300 is provided with a groove, and the reciprocating protrusion penetrates the groove. As long as it can ensure that the limiting body 300 moves along the trajectory of the reciprocating guide rail.

In this embodiment, the balance body 500 and the limiting body 300 have the same structure, the balance guide rail is the balance groove 700, and the balance groove 700 has the same structure as the reciprocating groove 600. By setting the structure of the upper balance body 500 to be the same as the structure of the limiting body 300, it can further ensure that the force exerted by the balance body 500 and the limiting body 300 on the transmission shaft 100 is consistent, further reducing the possibility of vibration of the transmission shaft 100. In other embodiments, the structures of the balance body 500 and the limiting body 300 may be inconsistent, as long as the force balance of the transmission shaft 100 can be ensured.

For example, the balance body 500 includes a balance ball 510, which is rollably disposed in the balance groove 700. and can move within the balance tank 700. The balance groove 700 is used to limit and guide the balance ball 510 to ensure that the balance ball 510 can move stably along the trajectory of the balance groove 700 .

Specifically, the balance body 500 is positioned on the balance sleeve 400. A second positioning groove is provided on the inner wall of the balance sleeve 400, and the balance body 500 is disposed in the second positioning groove. In another embodiment, if the balance body 500 is positioned on the transmission shaft 100 , the second positioning groove is opened on the transmission shaft 100 . Further, part of the balance ball 510 is rollably disposed in the second positioning groove, and the other part is disposed in the balance groove 700 .

In one embodiment, the balance body 500 further includes a balance base 520 and a plurality of rolling elements 530. The plurality of rolling elements 530 are disposed in the balance base 520. The balance ball 510 is partially penetrated in the balance base 520 and contacts the rolling elements 530. , both the balance ball 510 and the rolling element 530 can roll relative to the balance seat 520 .

In one embodiment, a first oil guide groove 610 is provided on the inner wall of the reciprocating groove 600 , and the trajectory of the first oil guide groove 610 is consistent with the trajectory of the reciprocating groove 600 . During use, lubricating oil can be provided in the first oil guide groove 610. The lubricating oil can further ensure the smoothness of the universal ball 310 of the limiting body 300 rolling in the reciprocating groove 600, and further ensure the reciprocating movement of the driving reciprocating sleeve 200. stability.

In one embodiment, a second oil guide groove 710 is provided on the inner wall of the balance groove 700 , and the trajectory of the second oil guide groove 710 is consistent with the trajectory of the balance groove 700 . During use, lubricating oil can be provided in the second oil guide groove 710. The lubricating oil can further ensure the smoothness of the balance ball 510 of the balance body 500 rolling in the balance groove 700, and further ensure the stability of the reciprocating movement of the driving balance sleeve 400. .

In one embodiment, the reciprocating transmission mechanism 10 further includes a housing 800 , in which the transmission shaft 100 , the reciprocating sleeve 200 and the balance sleeve 400 are all disposed. The housing 800 is provided to ensure the stability of the transmission between the transmission shaft 100, the reciprocating sleeve 200 and the balance sleeve 400. Specifically, the housing 800 can be filled with lubricating oil, so that the lubrication can effectively enter the first oil guide groove 610 and the second oil guide groove 710 .

In one embodiment, the reciprocating transmission mechanism 10 further includes a power source and an output shaft 900. The power source is connected to an end of the transmission shaft 100 close to the balance sleeve 400. The output shaft 900 is connected to the reciprocating sleeve 200 facing away from the balance sleeve 400. On one end of the balance sleeve 400, a power source is used to drive the transmission shaft 100 to rotate. The power source is used to provide power for the rotation of the transmission shaft 100; the output shaft 900 is used to output the reciprocating movement of the reciprocating sleeve 200. Specifically, the housing 800 is provided with an output hole 810 and an input hole 820. The power source is connected to the transmission shaft 100 through the input hole 820. The output shaft 900 passes through the output hole 810 and is connected to the reciprocating sleeve 200.

In one embodiment, the mass of the balancing sleeve 400 is greater than or equal to the mass of the reciprocating sleeve 200 . Therefore, the force generated by the balance sleeve 400 on the transmission shaft 100 is greater than or equal to the force generated by the reciprocating sleeve 200 on the transmission shaft 100 . For example, in this embodiment, the mass of the balance sleeve 400 can be consistent with the mass of the reciprocating sleeve 200 and the output shaft 900, so that the balance sleeve 400 can balance the reciprocating sleeve 200 and the output shaft 900 during the reciprocating movement of the transmission. Axial force generated by shaft 100. In another embodiment, the mass of the balancing sleeve 400 may also be consistent with the mass of the reciprocating sleeve 200 .

Referring to Figures 2 and 5, in one embodiment, the reciprocating transmission mechanism 10 further includes a guide 830, a first matching structure 210 is provided on the outer wall of the reciprocating sleeve 200, and a second matching structure 410 is provided on the outer wall of the balance sleeve 400. The guide member 830 guides and cooperates with the first matching structure 210 and the second matching structure 410 at the same time, and the guiding directions of the guide member 830 and the first matching structure 210 and the second matching structure 410 are both the axial direction of the transmission shaft 100 . Through the guiding cooperation between the first matching structure 210 and the guide member 830, the stability of the reciprocating movement direction of the reciprocating sleeve 200 can be ensured. Through the guiding cooperation between the second matching structure 410 and the guide member 830, the stability of the reciprocating movement direction of the balance sleeve 400 can be ensured.

Specifically, the guide member 830 is a rod-shaped structure, and the length direction of the rod-shaped guide member 830 is the axial direction of the transmission shaft 100. The first matching structure 210 is provided with a first guide hole 212, and the second matching structure 410 is provided with a first guide hole 212. The second guide hole 412 and one end of the guide member 830 pass through the first guide hole 212 and the second guide hole 412 in order to ensure that the balance sleeve 400 and the reciprocating sleeve 200 can effectively move along the axial direction of the transmission shaft 100 .

In this embodiment, the number of guide members 830 is at least two, and each guide member 830 rotates around the transmission shaft. The axes of 100 are evenly arranged. The number of the first cooperating structure 210 and the second cooperating structure 410 are consistent, and each guide member 830 can guide and cooperate with a first cooperating structure 210 and a second cooperating structure 410 at the same time.

In one embodiment, the power equipment includes the reciprocating transmission mechanism 10 in any of the above embodiments. For example, the power equipment may be a compressor, and the piston of the compressor may be connected to the reciprocating sleeve 200 . Or the power equipment can be a plunger pump, and the plunger of the plunger pump is connected to the reciprocating sleeve 200 . Or the power equipment can be an electric hammer, and the cylinder of the electric hammer is connected to the reciprocating sleeve 200 . In other embodiments, the power equipment may also be other components that require reciprocating power.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis"","radialdirection","circumferentialdirection", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or components must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements, unless otherwise Clear limits. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Claims

A reciprocating transmission mechanism, characterized in that the reciprocating transmission mechanism includes:

A transmission shaft, which is rotatable around its own axis;

A reciprocating sleeve, the reciprocating sleeve is sleeved on the transmission shaft;

The limiting body is positioned on one of the outer wall of the transmission shaft and the inner wall of the reciprocating sleeve. The other is provided with a reciprocating guide rail. The trajectory of the reciprocating guide rail is around the The closed curve of the axis of the transmission shaft, the limiting body cooperates with the guide of the reciprocating guide rail, and can move along the trajectory of the reciprocating guide rail;

a balance sleeve, which is sleeved on the transmission shaft and located on one side of the reciprocating sleeve; and a balance body, which is positioned on both the outer wall of the transmission shaft and the inner wall of the balance sleeve On one of them, the other is provided with a balance guide rail spaced apart from the reciprocating guide rail. The trajectory of the balance guide rail is a closed curve around the axis of the transmission shaft. The balance body and the balance guide rail The guide cooperates and can move along the trajectory of the balance guide rail. During the rotation of the transmission shaft, the balance sleeve and the reciprocating sleeve can move relatively or oppositely along the axial direction of the transmission shaft.
The reciprocating transmission mechanism according to claim 1, wherein the trajectory of the reciprocating guide rail around the axis of the transmission shaft is a sinusoidal curve, and the trajectory of the balance guide rail around the axis of the transmission shaft is a sinusoidal curve; The wave crest of the balance guide rail is opposite to the wave trough of the reciprocating guide rail, the wave trough of the balance guide rail is opposite to the wave crest of the reciprocating guide rail, and the limiting body and the balance body are relatively spaced apart.
The reciprocating transmission mechanism according to claim 2, characterized in that the reciprocating guide rail includes at least two complete and continuous sinusoidal cycles along the trajectory around the axis of the transmission shaft, and all the reciprocating guide rails are provided with The number of the limiting bodies is less than or equal to the number of sinusoidal cycles of the reciprocating guide rail, and the limiting bodies on the reciprocating guide rail are evenly spaced around the axis of the transmission shaft; the balance guide rail and the reciprocating The structures of the guide rails are consistent, the number of the balancing bodies and the limiting bodies are consistent, and one of the limiting bodies is arranged opposite to one of the balancing bodies along the axial direction of the transmission shaft.
The reciprocating transmission mechanism according to claim 1, wherein the reciprocating guide rail is a reciprocating groove, the reciprocating groove is a closed curved groove around the axis of the transmission shaft, and the limiting body includes a universal ball. , the universal ball is rollably disposed in the reciprocating groove and can move in the reciprocating groove.
The reciprocating transmission mechanism according to claim 4, wherein the balance body and the limiting body have the same structure, the balance guide rail is a balance groove, and the balance groove has the same structure as the reciprocating groove.
The reciprocating transmission mechanism according to claim 5, characterized in that a first oil guide groove is provided on the inner wall of the reciprocating groove, and the trajectory of the first oil guide groove is consistent with the trajectory of the reciprocating groove; the balance groove A second oil guide groove is provided on the inner wall, and the trajectory of the second oil guide groove is consistent with the trajectory of the balance groove.
The reciprocating transmission mechanism according to any one of claims 1 to 6, characterized in that the mass of the balance sleeve is greater than or equal to the mass of the reciprocating sleeve.
The reciprocating transmission mechanism according to any one of claims 1 to 6, further comprising a power source and an output shaft, the power source being connected to an end of the transmission shaft close to the balance sleeve, and the output shaft Connected to one end of the reciprocating sleeve facing away from the balance sleeve, the power source is used to drive the transmission shaft to rotate.
The reciprocating transmission mechanism according to any one of claims 1 to 6, further comprising a guide member, a first matching structure is provided on the outer wall of the reciprocating sleeve, and a second matching structure is provided on the outer wall of the balance sleeve. Coordinating structure, the guide member guides and cooperates with the first cooperating structure and the second cooperating structure at the same time, and the guiding directions of the guide member and the first cooperating structure and the second cooperating structure are all in the same direction. the axis direction of the drive shaft; and/or

It also includes a housing, and the transmission shaft, the reciprocating sleeve and the balance sleeve are all arranged in the housing.
A kind of power equipment, characterized in that the power equipment includes any one of claims 1-9 The reciprocating transmission mechanism.