Power take-off mechanism and vehicle

Abstract

The present invention provides a power take-off mechanism and a vehicle, the power take-off mechanism comprising: a box body having a storage space; a rotating shaft arranged in the storage space, the rotating shaft being used to connect a transmission shaft and a working device, wherein the rotating shaft is provided with an abutting and fitting portion; a limiting structure arranged in the storage space, the limiting structure abutting and fitting portion abutting and fitting to limit the axial position of the rotating shaft. The power take-off mechanism provided by this scheme, by arranging a rotating shaft between the transmission shaft and the working device, and abutting and fitting the limiting structure and the abutting and fitting portion to limit the axial movement of the rotating shaft, so that the rotating shaft absorbs the axial force from the transmission shaft, avoids the working device from being damaged by the axial force, and reduces the failure rate, and this scheme has a simple structure and is easy to assemble, which is conducive to shortening the assembly time of the product.

Description

Technical Field

[0001] The present invention relates to the field of power take-off mechanisms, and in particular to a power take-off mechanism and a vehicle. Background Art

[0002] At present, there are three types of hydraulic pump power take-off methods: direct connection of the power take-off mechanism, connection of the coupling sleeve, and connection of the transmission shaft. The direct connection of the power take-off mechanism has a simple structure, but has strict requirements on the spatial size and position. The coupling sleeve connection requires that the hydraulic pump and the power take-off end have strict coaxiality. The transmission shaft connection can install the hydraulic pump farther away from the power take-off end, and allows a certain position offset between the hydraulic pump and the power take-off end. Usually, when the current two connection methods cannot meet the requirements, the transmission shaft connection method needs to be selected. The transmission shaft connection method generally adopts that one end of the transmission shaft is connected to the power take-off end, and the other end is connected to the hydraulic pump. The transmission shaft connection method has relatively low requirements on spatial position and installation accuracy, but because the axial load allowed for the hydraulic pump is relatively small, it usually has to withstand a large axial force during use, and the failure rate is high. Summary of the invention

[0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide a power take-off mechanism.

[0004] Another object of the present invention is to provide a vehicle having the above-mentioned power take-off mechanism.

[0005] To achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention provides a power take-off mechanism, including: a box body, having a accommodating space; a transmission shaft; a rotating shaft, arranged in the accommodating space, one end of the rotating shaft is connected to the transmission shaft, and the other end is used to connect to a working device, wherein the rotating shaft is provided with an abutment fitting portion; a limiting structure, arranged in the accommodating space, the limiting structure abuts against the abutment fitting portion to limit the axial position of the rotating shaft.

[0006] The power take-off mechanism provided by the above-mentioned embodiment of the present invention, by setting a rotating shaft between the transmission shaft and the working device, and limiting the axial movement of the rotating shaft through the abutment cooperation of the limiting structure and the abutment cooperation part, so that the rotating shaft absorbs the axial force from the transmission shaft, avoids the working device from being damaged by the axial force, and reduces the failure rate. The present scheme has a simple structure and is easy to assemble, which is beneficial to shortening the assembly time of the product. In short, the present scheme forms an effective protection for the working device by adding a first-level transition element between the transmission shaft and the working device to withstand the axial force, and the transmission shaft and the working device are connected by the rotating shaft. The transmission accuracy of the rotating shaft is high, which avoids losses during the transmission process and is beneficial to improving the efficiency of the product.

[0007] In addition, the power take-off mechanism in the above embodiment provided by the present invention may also have the following additional technical features:

[0008] In the above technical solution, the abutting and fitting portion includes a shoulder formed on the rotating shaft, the shoulder is arranged along the circumference of the rotating shaft and abuts against the limiting structure.

[0009] In this solution, the abutment and fitting portion includes a shoulder formed on the rotating shaft, so that the abutment and fitting portion and the rotating shaft are an integrated structure, which has a better limiting effect on the rotating shaft and a simpler structure, which is conducive to reducing the difficulty of product assembly.

[0010] In any of the above technical solutions, the housing is provided with a bearing, the bearing is formed as the limiting structure, the rotating shaft is provided on the bearing, and the abutting fitting portion abuts against the bearing.

[0011] In this solution, the bearing is arranged to form a limiting structure, so that the bearing can not only support the rotating shaft but also limit the axial movement of the rotating shaft, and the product structure is simpler.

[0012] In the above technical solution, the box body includes a box body and a cover body, the box body is provided with an opening for the rotating shaft to extend outward, and the cover body is provided with a plug-in portion extending outwardly, the plug-in portion is adapted to the opening, and the plug-in portion extends into the box body along the opening and abuts against the bearing.

[0013] In this solution, the bearing is further limited by the plug-in portion of the cover body to prevent the bearing from shifting after being subjected to force, thereby further improving the reliability of the bearing.

[0014] In the above technical solution, a sealing member is provided between the cover body and the rotating shaft to seal the gap between the cover body and the rotating shaft, and a side wall of the sealing member abuts against the bearing.

[0015] In this solution, the side wall of the seal is arranged to abut against the bearing, which not only achieves sealing but also further forms axial limitation on the bearing, thereby further improving the reliability of the bearing.

[0016] In the above technical solution, the box body is provided with a stopper, and the bearing is located between the stopper and the abutting fitting portion and abuts against the stopper and the abutting fitting portion.

[0017] In this solution, a bearing abutment stopper and an abutment mating portion are provided, so that the bearing is limited in the axial direction, preventing the bearing from shifting after being subjected to force, thereby further improving the reliability of the bearing.

[0018] In the above technical solution, along the axial direction of the rotating shaft, the bearing has a first side wall and a second side wall opposite to each other, the first side wall abuts against the stopper, and the second side wall abuts against the abutting fitting portion.

[0019] In any of the above technical solutions, a supporting connection portion is provided on the box body, and the supporting connection portion is used to be connected to the gearbox support member.

[0020] In this solution, the box body is fixedly supported by the supporting connection part, thereby improving the stability of the box body, thereby improving the stability of the power take-off mechanism, and reducing the influence of the axial force on the working device.

[0021] In the above technical solution, a flange edge is provided on the outer peripheral wall of the box body, and the flange edge constitutes the supporting connection part.

[0022] In this solution, a flange edge is provided to form a supporting connection portion, so that the structure is simpler and the connection between the housing and the gearbox support is more reliable.

[0023] An embodiment of the second aspect of the present invention provides a vehicle, comprising: a frame; and the power take-off mechanism described in any of the above technical solutions, arranged on the frame.

[0024] The vehicle provided by the above embodiment of the present invention has all the above beneficial effects by being provided with the power take-off mechanism described in any of the above technical solutions, which will not be described in detail here.

[0025] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a partial structural schematic diagram of a power take-off mechanism according to an embodiment of the present invention;

[0028] Figure 2 is a schematic cross-sectional structural diagram of a power take-off mechanism according to an embodiment of the present invention;

[0029] Figure 3 It is a partial structural schematic diagram of a vehicle body described in an embodiment of the present invention.

[0030] in, Figures 1 to 3 The corresponding relationship between the reference numerals and component names in the figure is:

[0031] 110 box body, 1101 accommodating space, 111 box body, 1111 opening, 112 cover body, 1121 plug-in part, 120 rotating shaft, 121 abutting fitting part, 1211 shaft shoulder, 130 limiting structure, 140 bearing, 150 sealing member, 160 stopper, 170 supporting connection part, 180 transmission shaft, 220 working device, 230 gearbox, 231 gearbox support member, 240 frame. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0034] Refer to the following Figures 1 to 3 The power take-off mechanism according to some embodiments of the present invention is described.

[0035] like Figure 1 and Figure 2 As shown, the power take-off mechanism provided by the embodiment of the first aspect of the present invention includes a box body 110 , a rotating shaft 120 and a limiting structure 130 .

[0036] Specifically, the box body 110 has a accommodating space 1101, and the rotating shaft 120 is arranged in the accommodating space 1101. The rotating shaft 120 is used to connect the transmission shaft 180 and the working device 220, wherein the rotating shaft 120 is provided with an abutment fitting portion 121, and the limiting structure 130 is arranged in the accommodating space 1101. The limiting structure 130 abuts and fits with the abutment fitting portion 121 to limit the axial position of the rotating shaft 120.

[0037] The power take-off mechanism provided by the above-mentioned embodiment of the present invention is configured by setting a rotating shaft 120 between the transmission shaft 180 and the working device 220 (for example: a hydraulic pump), and limiting the axial movement of the rotating shaft 120 by abutting against the mating portion 121 through the limiting structure 130, so that the rotating shaft 120 absorbs the axial force from the transmission shaft 180, thereby preventing the working device 220 from being damaged by the axial force and reducing the failure rate. In addition, the present scheme has a simple structure and is easy to assemble, which is beneficial to shortening the assembly time of the product. In summary, the present scheme forms an effective protection for the working device 220 by adding a first-level transition element between the transmission shaft 180 and the working device 220 to withstand the axial force, and the transmission shaft 180 and the working device 220 are connected by the rotating shaft 120. The transmission accuracy of the rotating shaft 120 is high, which avoids losses during the transmission process and is beneficial to improving the efficiency of the product.

[0038] Understandable, such as Figure 3 As shown, one end of the transmission shaft 180 is connected to the rotating shaft 120, and the other end is connected to a power output source, so as to achieve power extraction, wherein the power output source can be an engine and the like.

[0039] For example, the rotating shaft 120 is assembled in the box body 110, and the rotating shaft 120 and the box body 110 form a rotating shaft 120 box. One end of the transmission shaft 180 is installed on the output shaft of the engine power take-off end, and the other end is installed on the input end of the rotating shaft 120. The hydraulic pump is installed at the output end of the rotating shaft 120, and the hydraulic pump input shaft is connected to the output shaft of the rotating shaft 120 box. The transmission shaft 180 and the hydraulic pump are directly connected through the rotating shaft 120. The rotating shaft 120 box only serves as the transition connection between the transmission shaft 180 and the hydraulic pump, and buffers the axial force brought by the rotation of the transmission shaft 180. The rotating shaft 120 box does not have the function of increasing or decreasing speed.

[0040] The transmission shaft 180 is connected to the rotating shaft 120 via a flange. Of course, those skilled in the art can also set other connection methods between the transmission shaft 180 and the rotating shaft 120 according to specific needs.

[0041] In one embodiment of the present invention, Figure 2 As shown, the abutting and fitting portion 121 includes a shoulder 1211 formed on the rotating shaft 120, and the shoulder 1211 is arranged along the circumference of the rotating shaft 120 and abuts against the limiting structure 130. In this way, the abutting and fitting portion 121 and the rotating shaft 120 are an integrated structure, which has a better limiting effect on the rotating shaft 120, and the structure is simpler, which is conducive to reducing the difficulty of product assembly.

[0042] In one embodiment of the present invention, the housing 110 is provided with a bearing 140, the bearing 140 is formed as a limiting structure 130, the rotating shaft 120 is provided on the bearing 140, and the abutting matching portion 121 abuts against the bearing 140. In this way, the bearing 140 not only supports the rotating shaft 120, but also has the function of limiting the axial movement of the rotating shaft 120, and the product structure is simpler.

[0043] For example, the number of bearings 140 is less than or equal to 3. For example, the number of bearings 140 is 2. A first shoulder 1211 and a second shoulder 1211 are formed on the rotating shaft 120. The first shoulder 1211 and the second shoulder 1211 are spaced apart along the axial direction of the rotating shaft 120. The first shoulder 1211 is located on the left side of the second shoulder 1211. The housing 110 is provided with a first bearing 140 and a second bearing 140. The first bearing 140 is located on the left side of the first shoulder 1211 and abuts against the left side wall of the first shoulder 1211. The second bearing 140 0 is arranged on the right side of the second shoulder 1211 and abuts against the right side wall of the second shoulder 1211, so that the first bearing 140 limits the movement of the rotating shaft 120 to the left, and the second bearing 140 limits the movement of the rotating shaft 120 to the right. Alternatively, the first bearing 140 can be arranged on the right side of the first shoulder 1211 and abut against the right side wall of the first shoulder 1211, and the second bearing 140 can be arranged on the left side of the second shoulder 1211 and abut against the left side wall of the second shoulder 1211, which can also achieve the limitation of the axial movement of the rotating shaft 120 in two directions.

[0044] In one embodiment of the present invention, the box body 110 includes a box body 111 and a cover body 112. The box body 111 is provided with an opening 1111 for the shaft 120 to extend outward. The cover body 112 is provided with an inserting portion 1121 extending outwardly. The inserting portion 1121 is adapted to the opening 1111. The inserting portion 1121 extends into the box body 110 along the opening 1111 and abuts against the bearing 140. The inserting portion 1121 of the cover body 112 further limits the bearing 140 to prevent the bearing 140 from shifting after being subjected to force, thereby further improving the reliability of the bearing 140.

[0045] For example, openings 1111 are formed at the left and right ends of the box body 111, respectively, and the rotating shaft 120 extends into the box body 111 along the openings 1111. The cover body 112 is arranged on the side of the box body 111 facing the transmission shaft 180, and the cover body 112 and the box body 111 are locked to the box body 111 by screws, bolts, buckles, etc. A sealing ring is provided between the cover body 112 and the box body 111 to seal the gap between the cover body 112 and the box body 111. Regarding the cover body 112, in detail, the cover body 112 is roughly circular similar to the box body 111, but a through hole is provided at a position corresponding to the opening 1111 on the cover body 112, so that the rotating shaft 120 can pass through the opening 1111 and the through hole in sequence and extend into the outside of the box body 111, thereby allowing the rotating shaft 120 to extend. The inserted part is connected with the transmission shaft 180, so that the connection between the rotating shaft 120 and the transmission shaft 180 is more convenient, and a convex edge is formed on the cover body 112 and extends outwardly toward the side of the box body 111, and the convex edge is adapted to the shape of the opening 1111, so that when the cover body 112 is covered on the box body 111, the peripheral side wall of the convex edge abuts against the wall of the opening 1111, and the convex edge is formed as a plug-in portion 1121, and the bearing 140 is located in the box body 110 near the opening 1111, so that the top wall of the convex edge abuts against the bearing 140. While the convex edge is used to realize the positioning and connection of the cover body 112 and the box body 111, the cover body 112 also has the function of stopping the bearing 140, so as to prevent the bearing 140 from jumping after being subjected to force, thereby further improving the reliability of the bearing 140.

[0046] In one embodiment of the present invention, a seal 150 is provided between the cover 112 and the rotating shaft 120 to seal the gap between the cover 112 and the rotating shaft 120, and the side wall of the seal 150 abuts against the bearing 140. While achieving sealing, the bearing 140 is further limited in the axial direction, thereby further improving the reliability of the bearing 140.

[0047] For example, the sealing member 150 includes a sealing ring, etc. The sealing ring is sleeved on the rotating shaft 120 and abuts against the cover body 112 to achieve sealing.

[0048] In one embodiment of the present invention, the housing 110 is provided with a stopper 160, and the bearing 140 is located between the stopper 160 and the abutting fitting portion 121 and abuts against the stopper 160 and the abutting fitting portion 121. The bearing 140 is limited in the axial direction to prevent the bearing 140 from shifting after being subjected to force, thereby further improving the reliability of the bearing 140.

[0049] For example, a stop wall protruding outward is formed on the inner wall of the box body 110, and the stop wall circumferentially surrounds the inner wall of the box body 110. The bearing 140 is located between the shoulder 1211 and the stop wall and abuts against the shoulder 1211 and the stop wall, so that the bearing 140 is limited in the axial direction to prevent the bearing 140 from shifting after being subjected to force, thereby further improving the reliability of the bearing 140.

[0050] In one embodiment of the present invention, along the axial direction of the rotating shaft 120 , the bearing 140 has a first side wall and a second side wall opposite to each other, the first side wall abuts against the stopper 160 , and the second side wall abuts against the matching portion 121 .

[0051] In one embodiment of the present invention, a support connection portion 170 is provided on the housing 110, and the support connection portion 170 is used to connect with the gearbox support member 231. The housing 110 is fixedly supported by the support connection portion 170, so as to improve the stability of the housing 110, thereby improving the stability of the power take-off mechanism and reducing the influence of the axial force on the working device 220. At the same time, the gearbox support member 231 can support and fix the housing 110 while supporting the gearbox 230, so as to achieve multiple uses of one object, which is conducive to reducing the number of components of the product, simplifying the structure of the product, and reducing the production cost. Of course, those skilled in the art can also set two support members separately according to specific needs, and the two support members respectively support the housing 110 and the gearbox 230.

[0052] In one embodiment of the present invention, a flange is provided on the outer peripheral wall of the housing 110, and the flange constitutes the support connection portion 170. In this way, the structure is simpler, and the connection between the housing 110 and the gearbox support member 231 is more reliable.

[0053] For example, a protruding flange is formed on the upper wall of the box body 110, and the gearbox support 231 is provided with a through hole. The box body 110 passes through the through hole, and the flange and the wall of the through hole are locked by screws or the like. The box body 110 is fixedly supported by the gearbox support 231, thereby improving the stability of the box body 110 and thereby improving the stability of the power take-off mechanism.

[0054] An embodiment of the second aspect of the present invention provides a vehicle, including: a frame 240; and a power take-off mechanism in any of the above technical solutions, which is arranged on the frame 240.

[0055] The vehicle provided by the above embodiment of the present invention has all the above beneficial effects by being provided with a power take-off mechanism in any of the above technical solutions, which will not be described in detail here.

[0056] In detail, the vehicle includes an engine, a frame 240, a hydraulic pump, a power take-off mechanism and other components, wherein the engine, the hydraulic pump and the power take-off mechanism are arranged on the frame 240, one end of the transmission shaft 180 of the power take-off mechanism is connected to the output end of the engine, and the other end is connected to one end of the rotating shaft 120 of the power take-off mechanism, and the other end of the rotating shaft 120 is connected to the hydraulic pump, thereby realizing the connection between the engine and the hydraulic pump.

[0057] The present invention has the following advantages:

[0058] 1. The product has high applicability and low requirements on space location and size.

[0059] 2. The product has a simple structure and high reliability. There is no gear transmission in the box body 110, and only the two ends are directly connected to offset the axial force generated by the transmission shaft 180 and increase the service life of the hydraulic pump.

[0060] In summary, the power take-off mechanism and vehicle provided by the present invention, by setting a rotating shaft 120 between the transmission shaft 180 and the working device 220 (for example: a hydraulic pump), and by abutting and cooperating with the abutting mating part 121 through the limiting structure 130, the rotating shaft 120 absorbs the axial force from the transmission shaft 180, avoiding damage to the working device 220 due to the axial force, and reducing the failure rate. In addition, the present scheme has a simple structure and is easy to assemble, which is beneficial to shortening the assembly time of the product. In short, the present scheme forms an effective protection for the working device 220 by adding a first-level transition element between the transmission shaft 180 and the working device 220 to withstand the axial force, and the transmission shaft 180 and the working device 220 are connected by the rotating shaft 120. The transmission accuracy of the rotating shaft 120 is high, which avoids losses during the transmission process and is beneficial to improving the efficiency of the product.

[0061] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of the present invention, it is necessary to understand that the terms "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power take-off mechanism, characterized in that: include: A box body having a containing space; A transmission shaft, one end of which is used to connect to a power output source; A rotating shaft is arranged in the accommodating space, one end of the rotating shaft is connected to the other end of the transmission shaft, and the other end of the rotating shaft is used to connect the working device, wherein the rotating shaft is provided with an abutting matching portion, and the rotating shaft and the box body form a rotating shaft box; A limiting structure is disposed in the accommodation space, and the limiting structure abuts and cooperates with the abutting and matching portion to limit the axial position of the rotating shaft; The abutting and matching portion includes a shoulder formed on the rotating shaft, the shoulder is arranged along the circumference of the rotating shaft and abuts against the limiting structure; The box body is provided with a bearing, the bearing is formed as the limiting structure, the rotating shaft is provided on the bearing, and the abutting matching portion abuts against the bearing; The rotating shaft is formed with a first shaft shoulder and a second shaft shoulder, and the first shaft shoulder and the second shaft shoulder are spaced apart along the axial direction of the rotating shaft; The box body is provided with a first bearing and a second bearing. The first bearing is provided on the left side of the first shoulder and abuts against the left side wall of the first shoulder. The second bearing is provided on the right side of the second shoulder and abuts against the right side wall of the second shoulder.

2. The power take-off mechanism according to claim 1, characterized in that: The box body comprises a box body and a cover body, the box body is provided with an opening for the shaft to extend out, the cover body is provided with an inserting portion extending outwardly, the inserting portion is adapted to the opening, the inserting portion extends into the box body along the opening and abuts against the bearing.

3. The power take-off mechanism according to claim 2, characterized in that: A sealing member is provided between the cover body and the rotating shaft to seal a gap between the cover body and the rotating shaft, and a side wall of the sealing member abuts against the bearing.

4. The power take-off mechanism according to claim 2, characterized in that: The box body is provided with a stopper, and the bearing is located between the stopper and the abutting fitting portion and abuts against the stopper and the abutting fitting portion.

5. The power take-off mechanism according to claim 4, characterized in that: Along the axial direction of the rotating shaft, the bearing has a first side wall and a second side wall opposite to each other, the first side wall abuts against the stopper, and the second side wall abuts against the abutting matching portion.

6. The power take-off mechanism according to claim 1, characterized in that: The box body is provided with a supporting connection portion, and the supporting connection portion is used to be connected to a gearbox support member.

7. The power take-off mechanism according to claim 6, characterized in that: A flange edge is arranged on the outer peripheral wall of the box body, and the flange edge constitutes the supporting connection part.

8. A vehicle, characterized in that: include: Frame; The power take-off mechanism according to any one of claims 1 to 7, arranged on the vehicle frame.

Images