Agricultural machinery transmission shaft assembly capable of being quickly assembled and disassembled

Abstract

The utility model discloses an agricultural machinery transmission shaft assembly capable of being quickly assembled and disassembled, and relates to the technical field of agricultural machinery transmission shafts. The agricultural machinery transmission shaft assembly capable of achieving rapid assembly and disassembly comprises a spline sleeve, oil hatch covers are fixedly installed on the two sides of the spline sleeve, reeds are fixedly installed on one sides of the oil hatch covers, an oil injection nozzle is fixedly installed in the center of each oil hatch cover, a partition plate is installed on the outer side of each oil injection nozzle in a penetrating and inserting mode, and an oil discharge pipe is arranged at the lower end of the spline sleeve. The spline shaft is installed in the center of the spline sleeve in a penetrating mode, when the spline shaft moves in the spline sleeve, the sealing ring can drive lubricating oil to move, and therefore the lubricating oil covering area is increased, and the lubricating oil seeping out of a gap can be discharged through the oil discharging pipes at the top end of the spline sleeve and the bottom end of the spline sleeve. In this way, a certain amount of lubricating oil can be stored in the oil tank of the spline housing, and the lubricating oil is prevented from being quickly lost through the sealing ring, so that the maintenance time interval is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery transmission shaft technical field, concretely is a kind of agricultural machinery transmission shaft assembly of realizing quick assembly and disassembly. BACKGROUND

[0002] Agricultural machinery transmission shaft assembly is the key component of power transmission in agricultural machinery, mainly used to connect gearbox, differential or other power output device, to transmit power to driving wheel or other working parts (such as rotary tiller, harvesting knife, etc.).

[0003] The existing can refer to the announcement No. CN218780662U of Chinese utility model patent, it discloses a kind of transmission shaft assembly.The transmission shaft assembly includes: fork piece and spline pair, spline pair is connected to fork piece;Fork piece has first extrusion structure and second extrusion structure, first extrusion structure and second extrusion structure are respectively formed in the opposite two ends of fork piece, and fork piece is hollow structure;Spline pair includes inner tooth and outer tooth, and inner tooth and outer tooth are engaged connection, and outer tooth is hollow structure.The transmission shaft assembly provided by the utility model gives full play to the lever mechanics characteristics of material, uses as few material as possible to achieve the maximization of torque, while avoiding the high carbon emission and high energy consumption process such as forging and heat treatment.

[0004] The existing transmission shaft assembly needs to compensate the length change of transmission shaft caused by vibration or terrain fluctuation through the telescopic sliding of spline, and the spline needs to be lubricated during use, otherwise it will appear spline wear, resulting in tooth marking, affecting the service life of transmission shaft, and the spline teeth are open structure, and the lubricating oil between spline teeth will be discharged during the telescopic process of spline, and it is necessary to add lubricating oil to spline regularly, since inner spline and outer spline need to be strictly aligned to be inserted, the above-mentioned transmission shaft assembly needs to manually rotate shaft pipe or adjust angle when installing, which is time-consuming and easy to wear tooth surface, and meanwhile, the angle of universal joint at both ends will be deflected during assembly process, affecting the connection between transmission shaft at both ends and driving mechanism and driven mechanism. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a kind of agricultural machinery transmission shaft assembly of realizing quick assembly and disassembly, solves the problem of time-consuming disassembly and maintenance interval short of spline.

[0006] In order to achieve the above object, the utility model discloses a kind of quick assembly and disassembly of agricultural machinery transmission shaft assembly, it includes spline sleeve, the both sides of the spline sleeve are fixedly installed oil tank cover, the one side of the oil tank cover is fixedly installed reed, the center of the oil tank cover is fixedly installed oil filler neck, the outside of the oil filler neck is inserted and installed baffle, the lower end of the spline sleeve is provided with oil discharge pipe, the center of the spline sleeve is inserted and installed spline shaft, the outside of the spline shaft is fixedly installed limit rod, the bottom of the spline sleeve and the top of spline shaft are fixedly installed with connecting mechanism;

[0007] The connecting mechanism includes fixed yoke that is fixed to the bottom of the spline sleeve and the top of the spline shaft, the cross shaft is movably installed in the inside of the fixed yoke, the branch end of the cross shaft is fixedly installed with the needle roller bearing, the connecting yoke is movably installed above the cross shaft, and the snap spring is installed between the connecting yoke and the fixed yoke.

[0008] Preferably, the center of the spline sleeve is provided with oil tank on the front and back sides, the center of the oil tank on the front and back sides of the spline sleeve is provided with horizontal pipeline in communication with the inner cavity of the spline sleeve, and the inside end of the oil filler neck is located in the inside of the oil tank of the spline sleeve.

[0009] Preferably, the outside and the center of the baffle are provided with sealing rings, the inner diameter of the sealing ring in the center of the baffle matches the outer diameter of the oil filler neck, the baffle and the oil filler neck form a sliding connection, and the spline shaft and the spline sleeve form a sliding connection.

[0010] Preferably, the spline shaft is provided with annular groove at the spline center, the sealing ring is symmetrically installed on the upper and lower sides of the spline shaft based on the annular groove at the spline center, the bottom end of the limit rod is provided with disc-shaped protrusion, the top end of the limit rod is connected to the spline shaft through thread structure, and the limit rod and the spline sleeve form a sliding connection.

[0011] Preferably, the fixed yoke forms movable connection between the cross shaft, the needle roller bearing and the upper connecting yoke, the fixed yoke, the connecting yoke and the cross shaft form rotary connection, the top end of the connecting yoke is provided with flange structure, and the both sides of the fixed yoke and the connecting yoke are provided with rectangular protrusion.

[0012] Preferably, the snap spring is "L" shaped structure, the both ends of the snap spring are provided with openings embedded with the rectangular protrusions on the both sides of the fixed yoke and the connecting yoke, and the two ends of the snap spring are diagonally embedded and installed between the fixed yoke and the connecting yoke.

[0013] Beneficial effects

[0014] The utility model provides a kind of agricultural machinery transmission shaft assembly of quick assembly and disassembly is realized.Compared with prior art, it has the following beneficial effects:

[0015] (1), the agricultural machinery transmission shaft assembly of quick assembly and disassembly is realized, by the setting of limiting rod, limiting rod has four, two are a group to spline sleeve oil tank center as reference installation in the two sides of spline shaft, the bottom end of limiting rod is provided with disc-shaped protrusion, and the top end of limiting rod is connected with spline shaft by screw structure, limiting rod and spline sleeve form sliding connection, limiting rod can limit the moving direction of spline shaft, and prevent spline shaft from slipping from inside spline sleeve before installation, and the clamping spring is installed between the fixed yoke and the connecting yoke, and is embedded with the protruding structure on one side of the fixed yoke and the connecting yoke, so that the central axis of the fixed yoke and the connecting yoke can be kept in the same straight line during installation, preventing the position of the connecting yoke from changing during installation, which causes the difficulty of aligning the flange structure hole of the top end of the connecting yoke, and the clamping spring needs to be removed after installation, which can be removed by rotating during disassembly, so that the spline shaft and the spline sleeve can be separated, thereby facilitating the disassembly of the transmission shaft assembly.

[0016] (2), the agricultural machinery transmission shaft assembly of quick assembly and disassembly is realized, by the setting of the partition, the inside end of the oil filler is located between the partition and the bottom surface of the spline sleeve oil tank, and the oil pressure will push the partition to move towards the oil tank cover and squeeze the spring piece when adding lubricating oil, and the spring piece is in a compressed state after oil injection, and the partition pushes the lubricating oil into the gap between the inner wall of the spline sleeve and the outer wall of the spline shaft through the elastic force of the spring piece, and the lubricating oil is lubricated, and the annular groove in the center of the spline shaft and the oil tank bottom surface opening structure can balance the oil pressure on both sides at ordinary times, avoiding the influence of the lubricating oil on the dynamic balance of the transmission shaft during rotation, and due to the setting of the sealing ring, the lubricating oil will be located between the sealing rings, and the sealing ring will move the lubricating oil when the spline shaft moves inside the spline sleeve, thereby increasing the coverage area of the lubricating oil, and the lubricating oil seeping from the gap can be discharged through the oil discharge pipe at the top end of the spline sleeve and the bottom end of the spline sleeve. This way can store a certain amount of lubricating oil in the oil tank inside the spline sleeve, and prevent the lubricating oil from flowing out quickly through the sealing ring, thereby increasing the maintenance time interval. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the partition installation structure schematic diagram of the utility model;

[0019] Figure 3 It is the spline sleeve cross section structure schematic diagram of the utility model;

[0020] Figure 4 It is the clamping spring installation structure schematic diagram of the utility model;

[0021] Figure: 1, spline sleeve; 11, oil tank cover; 12, reed; 13, oil nozzle; 14, partition; 15, oil drain pipe; 16, spline shaft; 17, sealing ring; 18, limit rod; 2, connecting mechanism; 21, fixed yoke; 22, cross shaft; 23, needle bearing; 24, connecting yoke; 25, snap spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-4 The present application provides a technical solution: a farm machinery transmission shaft assembly capable of being quickly assembled and disassembled includes an oil tank cover 11 fixedly installed on both sides of a spline sleeve 1, a reed 12 fixedly installed on one side of the oil tank cover 11, an oil nozzle 13 fixedly installed at the center of the oil tank cover 11, a partition 14 inserted and installed on the outer side of the oil nozzle 13, an oil drain pipe 15 provided at the lower end of the spline sleeve 1, a spline shaft 16 inserted and installed at the center of the spline sleeve 1, a sealing ring 17 fitted and installed on the outer side of the spline shaft 16, a limit rod 18 fixedly installed on the outer side of the spline shaft 16, oil tanks provided at the center of the front and rear sides of the spline sleeve 1, horizontal pipelines provided at the center of the oil tanks on the front and rear sides of the spline sleeve 1 and communicating with the inner cavity of the spline sleeve 1, the inner side end of the oil nozzle 13 located inside the oil tank of the spline sleeve 1, sealing rings provided on the outer side and at the center of the partition 14, the inner diameter of the sealing ring at the center of the partition 14 matched with the outer diameter of the oil nozzle 13, the partition 14 and the oil nozzle 13 forming a sliding connection therebetween, the spline shaft 16 and the spline sleeve 1 forming a sliding connection therebetween, an annular groove provided at the spline center of the spline shaft 16, the sealing ring 17 symmetrically installed on the upper and lower sides of the spline shaft 16 based on the annular groove at the center of the spline shaft 16, a disc-shaped protrusion provided at the bottom end of the limit rod 18, the top end of the limit rod 18 connected with the spline shaft 16 through a threaded structure, and the limit rod 18 and the spline sleeve 1 forming a sliding connection therebetween.

[0024] Specifically, the spline sleeve 1 can limit the moving direction of the spline shaft 16, the oil tank is closed by the oil tank cover 11 on both sides of the center of the spline sleeve 1, and the lubricating oil is added to the inside of the oil tank of the spline sleeve 1 through the oil nozzle 13. Since the inside end of the oil nozzle 13 is located between the partition plate 14 and the bottom surface of the oil tank of the spline sleeve 1, the oil pressure will push the partition plate 14 to move towards the oil tank cover 11 when adding lubricating oil, and the spring leaf 12 is extruded. After the oil is added, the spring leaf 12 is in a compressed state, and the partition plate 14 pushes the lubricating oil into the gap between the inner wall of the spline sleeve 1 and the outer wall of the spline shaft 16 through the elastic force of the spring leaf 12 to lubricate. Since the sealing ring 17 is arranged, the lubricating oil will be located between the sealing rings 17, and when the spline shaft 16 moves inside the spline sleeve 1, the sealing ring 17 will move the lubricating oil, thereby increasing the coverage area of the lubricating oil. The lubricating oil seeping out of the gap can be discharged through the oil discharge pipe 15 at the top end of the spline sleeve 1 and the bottom end of the spline sleeve 1. The limiting rod 18 can limit the moving direction of the spline shaft 16 and prevent the spline shaft 16 from slipping out of the inside of the spline sleeve 1.

[0025] The bottom end of the spline sleeve 1 and the top end of the spline shaft 16 are fixedly installed with the connecting mechanism 2. The connecting mechanism 2 includes the fixed yoke 21 fixed to the bottom end of the spline sleeve 1 and the top end of the spline shaft 16. The inside of the fixed yoke 21 movably installs the cross shaft 22. The branch ends of the cross shaft 22 are fixedly installed with the needle bearing 23. The upper part of the cross shaft 22 movably installs the connecting yoke 24. The connecting yoke 24 and the fixed yoke 21 are installed with the snap spring 25. The fixed yoke 21 is movably connected through the cross shaft 22, the needle bearing 23 and the upper connecting yoke 24. The fixed yoke 21, the connecting yoke 24 and the cross shaft 22 are rotatably connected. The top end of the connecting yoke 24 is provided with a flange structure. The two sides of the fixed yoke 21 and the connecting yoke 24 are provided with rectangular protrusions. The snap spring 25 is in "L" shape structure. The two ends of the snap spring 25 are provided with openings embedded with the rectangular protrusions on the two sides of the fixed yoke 21 and the connecting yoke 24. The two ends of the snap spring 25 are diagonally embedded and installed between the fixed yoke 21 and the connecting yoke 24.

[0026] Specifically, the fixed yoke 21 can facilitate the limitation of the positions of the cross shaft 22, the spline sleeve 1 and the spline shaft 16. The needle bearing 23 can reduce the friction between the cross shaft 22, the fixed yoke 21 and the connecting yoke 24 when the cross shaft 22 rotates. The flange structure at the top end of the connecting yoke 24 can facilitate the connection with the power input shaft and the driven shaft body. The snap spring 25 is diagonally installed between the fixed yoke 21 and the connecting yoke 24 and is embedded with the protrusion structure on one side of the fixed yoke 21 and the connecting yoke 24. It can keep the central axes of the fixed yoke 21 and the connecting yoke 24 in the same straight line during installation to prevent the position of the connecting yoke 24 from changing. Meanwhile, the contents not described in detail in the specification all belong to the existing technology known to those skilled in the art.

[0027] When working, the limiting rods 18 are four in total, two of which are installed on both sides of the spline shaft 16 with the spline sleeve 1 oil tank center as the reference, the bottom end of the limiting rod 18 is provided with a disc-shaped protrusion, and the top end of the limiting rod 18 is connected with the spline shaft 16 through a threaded structure, the limiting rod 18 and the spline sleeve 1 form a sliding connection, the limiting rod 18 can limit the moving direction of the spline shaft 16, and prevent the spline shaft 16 from slipping out of the spline sleeve 1 before installation, the snap spring 25 is installed diagonally between the fixed yoke 21 and the connecting yoke 24, and is embedded with the protruding structure on one side of the fixed yoke 21 and the connecting yoke 24, which can keep the central axis of the fixed yoke 21 and the connecting yoke 24 in the same straight line during installation, preventing the position of the connecting yoke 24 from changing during installation, which causes the flange structure hole of the top end of the connecting yoke 24 to be difficult to align, the snap spring 25 needs to be removed after installation, and the limiting rod 18 can be removed by rotating during disassembly, so that the spline shaft 16 and the spline sleeve 1 are separated, thereby facilitating the disassembly and assembly of the transmission shaft assembly, the inside end of the oil nozzle 13 is located between the baffle 14 and the bottom surface of the spline sleeve 1 oil tank, when adding lubricating oil, the oil pressure will push the baffle 14 to move towards the oil tank cover 11, and squeeze the spring leaf 12, after completing the oil injection, the spring leaf 12 is in a compressed state, the baffle 14 pushes the lubricating oil into the gap between the inner wall of the spline sleeve 1 and the outer wall of the spline shaft 16 through the elastic force of the spring leaf 12, and lubricates, the annular groove in the center of the spline shaft 16 and the oil tank bottom surface opening structure can balance the oil pressure on both sides at ordinary times, avoiding the influence of the lubricating oil on the dynamic balance of the transmission shaft during the rotation of the transmission shaft, due to the arrangement of the sealing ring 17, the lubricating oil will be located between the sealing rings 17, and when the spline shaft 16 moves inside the spline sleeve 1, the sealing ring 17 will move the lubricating oil, thereby increasing the coverage area of the lubricating oil, the lubricating oil seeping out of the gap can be discharged through the oil discharge pipe 15 at the top end of the spline sleeve 1 and the bottom end of the spline sleeve 1, this way can store a certain amount of lubricating oil in the oil tank inside the spline sleeve 1, and prevent the lubricating oil from flowing out quickly through the sealing ring 17, thereby increasing the maintenance time interval.

[0028] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An agricultural machine drive shaft assembly that enables quick assembly and disassembly, comprising a spline sleeve (1), characterized in that: The both sides of the spline sleeve (1) are fixedly installed with oil tank covers (11), one side of the oil tank cover (11) is fixedly installed with a reed (12), the center of the oil tank cover (11) is fixedly installed with an oil injection nozzle (13), the outer side of the oil injection nozzle (13) is penetratingly installed with a partition plate (14), the lower end of the spline sleeve (1) is provided with an oil discharge pipe (15), the center of the spline sleeve (1) is penetratingly installed with a spline shaft (16), the outer side of the spline shaft (16) is embeddedly installed with a sealing ring (17), the outer side of the spline shaft (16) is fixedly installed with a limiting rod (18), the bottom end of the spline sleeve (1) and the top end of the spline shaft (16) are fixedly installed with a connecting mechanism (2). The connecting mechanism (2) comprises a fixed yoke (21) fixed to the bottom end of the spline sleeve (1) and the top end of the spline shaft (16), a cross shaft (22) movably installed in the fixed yoke (21), a needle bearing (23) fixedly installed at the branch ends of the cross shaft (22), a connecting yoke (24) movably installed above the cross shaft (22), and a snap spring (25) installed between the connecting yoke (24) and the fixed yoke (21).

2. An agricultural machine drive shaft assembly that enables quick assembly and disassembly as claimed in claim 1, wherein: The center of the spline sleeve (1) is provided with oil tanks on the front and back sides, the center of the oil tanks on the front and back sides of the spline sleeve (1) is provided with horizontal pipelines in communication with the inner cavity of the spline sleeve (1), and the inner side end of the oil injection nozzle (13) is located inside the oil tank of the spline sleeve (1).

3. A farm implement drive shaft assembly that enables quick assembly and disassembly as claimed in claim 1, wherein: The outer side and the center of the partition plate (14) are provided with sealing rings, the inner diameter of the center sealing ring of the partition plate (14) matches the outer diameter of the oil injection nozzle (13), a sliding connection is formed between the partition plate (14) and the oil injection nozzle (13), and a sliding connection is formed between the spline shaft (16) and the spline sleeve (1).

4. A farm implement drive shaft assembly that enables quick assembly and disassembly as claimed in claim 1, wherein: The spline shaft (16) is provided with an annular groove at the spline center, the sealing ring (17) is symmetrically installed on the upper and lower sides of the spline shaft (16) based on the annular groove at the center of the spline shaft (16), the bottom end of the limiting rod (18) is provided with a disc-shaped protrusion, the top end of the limiting rod (18) is connected with the spline shaft (16) through a threaded structure, and a sliding connection is formed between the limiting rod (18) and the spline sleeve (1).

5. A farm implement drive shaft assembly that enables quick assembly and disassembly as claimed in claim 1, wherein: The fixed yoke (21) is movably connected through the cross shaft (22), the needle bearing (23) and the upper connecting yoke (24), the fixed yoke (21), the connecting yoke (24) and the cross shaft (22) are rotationally connected, the top end of the connecting yoke (24) is provided with a flange structure, and the both sides of the fixed yoke (21) and the connecting yoke (24) are provided with rectangular protrusions.

6. A farm implement drive shaft assembly that enables quick assembly and disassembly as claimed in claim 1, wherein: The snap spring (25) is in "L" shape structure, the both ends of the snap spring (25) are provided with openings embedded with the rectangular protrusions on the both sides of the fixed yoke (21) and the connecting yoke (24), and the two ends of the snap spring (25) are diagonally embeddedly installed between the fixed yoke (21) and the connecting yoke (24).

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