Agricultural machine steering transmission shaft assembly with lubricant containing cavity

Abstract

The utility model relates to the technical field of steering transmission shaft assemblies, in particular to an agricultural machinery steering transmission shaft assembly with a lubricant containing cavity, which comprises a transmission shaft, a driving fork head is fixed on the transmission shaft, the driving fork head is connected with a driven fork head through a cross shaft, and a lubricating mechanism is arranged on the driven fork head and used for supplementing lubricant. The lubricating mechanism comprises a main body assembly which comprises a barrel installed on the cross shaft, the lower end of the barrel is fixedly communicated with a threaded head, an oil outlet pipe is fixed to the center in the threaded head, and an oil outlet hole is formed in the middle of the oil outlet pipe; the control assembly comprises a barrel rod installed in the barrel, an oil conveying channel is formed in one end in the barrel rod, an oil inlet is formed in the lower end of the oil conveying channel, an oil discharging hole is formed in the upper end of the oil conveying channel, and an inner hexagonal thread head is rotationally installed at the upper end of the barrel rod; precise lubricant filling and automatic sealing are achieved through rotation control, the maintenance efficiency is remarkably improved, meanwhile, lubricant leakage is effectively prevented, and the service life of the transmission shaft is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to steering transmission shaft assembly technical field, concretely is agricultural machinery steering transmission shaft assembly that the lubricant containing cavity is constituted. BACKGROUND

[0002] The agricultural machinery steering transmission shaft is the core component of the agricultural machinery steering system, is responsible for transmitting the rotary torque of the steering wheel to the steering wheel or the steering mechanism, realizes the flexible steering of the vehicle,

[0003] According to the search announcement number: CN219668319U, a steering transmission shaft assembly is disclosed, and the technical scheme disclosed in the technology comprises an input shaft, a transmission shaft and an output shaft, the transmission shaft comprises a shaft body and a shaft pipe sleeved on the shaft body, the shaft body and the shaft pipe slide axially relative to each other, the input shaft and the shaft body are connected through a universal joint, and the shaft pipe and the output shaft are connected through a universal joint, a corrugated sleeve is sleeved at the connecting position of the input shaft and the shaft body and the connecting position of the shaft pipe and the output shaft, fixed rings are sleeved at the opposite ends of the input shaft and the shaft body and the opposite ends of the shaft pipe, an annular groove is formed in the end face of the fixed ring close to the universal joint, connecting rings are mounted at the two ends of the corrugated sleeve, the end of the connecting ring away from the corrugated sleeve is inserted into the annular groove, and the connecting ring is locked by a locking assembly, and a sealing ring is embedded between the connecting ring and the annular groove, and the technical scheme has the technical effects of simple design, good dustproof effect and good damping effect,

[0004] The conventional transmission shaft needs to rely on artificial periodic replenishment of lubricating grease to maintain operation, once the maintenance work is delayed, the universal joint, the spline and other key friction parts will produce dry friction due to insufficient lubrication, and then cause problems such as abnormal wear of parts, movement jamming or operation noise. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides an agricultural machinery steering transmission shaft assembly composed of a lubricant containing cavity, which realizes precise lubricant filling and automatic sealing through rotation control, significantly improves the maintenance efficiency, effectively prevents lubricant leakage and prolongs the service life of the transmission shaft.

[0006] In order to achieve the above purpose, the utility model realizes the following technical scheme: the agricultural machinery steering transmission shaft assembly composed of the lubricant containing cavity, comprising a transmission shaft, a driving fork head fixed on the transmission shaft, a driven fork head connected with the driving fork head through a cross shaft, and a lubricating mechanism arranged on the driven fork head and used for supplementing lubricant, the lubricating mechanism comprising:

[0007] A main assembly comprising a cylinder mounted on the cross shaft, a threaded head fixedly connected to the lower end of the cylinder, a oil outlet pipe fixedly arranged in the center of the threaded head, and an oil outlet hole formed in the middle of the oil outlet pipe;

[0008] The control assembly comprises a cylinder rod installed inside the cylinder body, an oil delivery channel is formed in the inner end of the cylinder rod, an oil inlet is formed in the lower end of the oil delivery channel, an oil outlet hole is formed in the upper end of the oil delivery channel, and an inner hexagonal threaded head is rotatably installed on the upper end of the cylinder rod.

[0009] Preferably, the top of the cross shaft is fixed with an oil supply port, and a radial oil channel is formed in the inside of the cross shaft and communicates with the oil supply port.

[0010] Preferably, the main body assembly further comprises a threaded hole formed in the inside of the upper end of the cylinder body, and the cylinder body is screw-installed with the inner hexagonal threaded head through the threaded hole.

[0011] Preferably, the main body assembly further comprises an oil injection port fixedly communicated on the outside of the cylinder body, and an inner hexagonal plug is screw-installed in the inside of the oil injection port.

[0012] Preferably, the control assembly further comprises a key strip fixed on the lower end of the outer wall of the cylinder rod, and the cylinder rod is slidingly installed with the threaded head through the key strip.

[0013] Preferably, the outer wall of the threaded head is screw-connected with the inner wall of the oil supply port.

[0014] Beneficial effects

[0015] The utility model provides a farm machinery steering transmission shaft assembly with lubricant containing cavity composition. Compared with prior art, the following beneficial effects are achieved:

[0016] 1. When the cross shaft needs to add lubricant, rotate the inner hexagonal threaded head to drive the cylinder rod to move upwards, the cylinder rod drives the oil inlet to align with the oil outlet hole, at the same time, the oil outlet hole is separated from the threaded head and enters the cylinder body, so that the lubricant in the inside of the cylinder body enters the oil delivery channel through the oil outlet hole, then enters the oil outlet pipe through the oil inlet from the oil delivery channel, and finally is discharged into the cross shaft from the oil outlet pipe. The precise lubricant filling can be realized by simple rotation operation without disassembling the transmission shaft, and the maintenance efficiency is significantly improved.

[0017] 2. After adding the lubricant, rotate the inner hexagonal threaded head to drive the cylinder rod to move downwards, the cylinder rod drives the oil inlet to be staggered with the oil outlet hole, at the same time, the oil outlet hole is separated from the cylinder body and enters the threaded head, so that the outer wall of the oil outlet pipe blocks the oil inlet, and the inner wall of the threaded head blocks the oil outlet hole, effectively preventing the lubricant from leaking in the non-filling state. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is a split diagram of the cross shaft and the lubricating mechanism in the utility model;

[0020] Figure 3 is a sectional view of the lubricating mechanism in the utility model;

[0021] Figure 4 is a sectional view of the main body assembly in the utility model;

[0022] Figure 5 is a sectional view of the control assembly in the utility model.

[0023] In the drawing: 1, transmission shaft; 2, driving fork head; 3, cross shaft; 4, driven fork head; 5, lubricating mechanism; 51, main body assembly; 511, barrel body; 512, threaded head; 513, oil outlet pipe; 514, oil outlet hole; 515, threaded hole; 516, oil filling port; 517, internal hexagonal plug; 52, control assembly; 521, barrel rod; 522, key bar; 523, oil delivery channel; 524, oil inlet; 525, oil discharge hole; 526, internal hexagonal threaded head; 6, oil supply port; 7, radial oil channel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figure 1 - Figure 5 The utility model provides a kind of technical scheme: the agricultural machinery steering transmission shaft assembly of lubricant containing cavity composition, including transmission shaft 1, transmission shaft 1 is fixed with driving fork head 2, driving fork head 2 is connected with driven fork head 4 by cross shaft 3, driven fork head 4 is provided with lubricating mechanism 5 and is used to supplement lubricant, and lubricating mechanism 5 includes:

[0026] Main body assembly 51, including barrel body 511 installed on cross shaft 3, threaded head 512 is fixedly connected in the lower end of barrel body 511, oil outlet pipe 513 is fixed in the inside central part of threaded head 512, and oil outlet hole 514 is formed in the middle part of oil outlet pipe 513;

[0027] Control assembly 52, including barrel rod 521 installed in the inside of barrel body 511, oil delivery channel 523 is formed in the inside one end of barrel rod 521, oil inlet 524 is formed in the lower end of oil delivery channel 523, oil discharge hole 525 is formed in the upper end of oil delivery channel 523, and internal hexagonal threaded head 526 is rotatably installed in the upper end of barrel rod 521.

[0028] When the cross shaft 3 needs to be added with lubricant, the inner hexagonal threaded head 526 is rotated to drive the cylinder rod 521 to move upward, the cylinder rod 521 drives the oil inlet 524 to be aligned with the oil outlet hole 514, and at the same time, the oil outlet hole 525 is separated from the threaded head 512 to enter the cylinder body 511, so that the lubricant inside the cylinder body 511 enters the oil delivery channel 523 through the oil outlet hole 525, and then enters the oil outlet pipe 513 from the oil delivery channel 523, and finally is discharged into the cross shaft 3 from the oil outlet pipe 513. Without disassembling the transmission shaft, precise lubricant filling can be realized through simple rotation operation, and maintenance efficiency is significantly improved. After adding the lubricant, the inner hexagonal threaded head 526 is rotated again to drive the cylinder rod 521 to move downward, the cylinder rod 521 drives the oil inlet 524 to be misaligned with the oil outlet hole 514, and at the same time, the oil outlet hole 525 is separated from the cylinder body 511 to enter the threaded head 512, so that the outer wall of the oil outlet pipe 513 blocks the oil inlet 524, and the inner wall of the threaded head 512 blocks the oil outlet hole 525, effectively preventing the lubricant from leaking in the non-filling state.

[0029] Specifically, the top of the cross shaft 3 is fixed with the oil inlet 6, and the inside of the cross shaft 3 is provided with a radial oil channel 7 and is communicated with the oil inlet 6.

[0030] In this embodiment, the lubricant discharged from the lubricating mechanism 5 enters the radial oil channel 7 through the oil inlet 6, and is uniformly distributed to each friction position of the cross shaft 3 through the radial oil channel 7, so as to ensure the overall lubrication of the universal joint bearing and reduce local wear.

[0031] Specifically, the main body assembly 51 further comprises a threaded hole 515 provided in the inside of the upper end of the cylinder body 511, and the cylinder body 511 is screw-mounted with the inner hexagonal threaded head 526 through the threaded hole 515.

[0032] In this embodiment, the inner hexagonal threaded head 526 can drive the cylinder rod 521 to move up and down.

[0033] Specifically, the main body assembly 51 further comprises an oil injection port 516 fixedly connected to the outside of the cylinder body 511, and the inner hexagonal plug 517 is screw-mounted in the inside of the oil injection port 516.

[0034] In this embodiment, when the lubricant contained in the inside of the cylinder body 511 is used up, the inner hexagonal plug 517 can be removed, and the lubricant can be supplemented into the inside of the cylinder body 511 through the oil injection port 516.

[0035] Specifically, the control assembly 52 further comprises a key strip 522 fixed to the lower end of the outer wall of the cylinder rod 521, and the cylinder rod 521 is slidingly installed with the threaded head 512 through the key strip 522.

[0036] In this embodiment, the key strip 522 limits the rotation of the cylinder rod 521, and ensures that it only moves in the axial direction.

[0037] Specifically, the outer wall of the threaded head 512 is in threaded connection with the inner wall of the oil supply port 6.

[0038] In the embodiment, the lubricating mechanism 5 as a whole can be disassembled from the cross shaft 3.

[0039] The working principle and use process of the utility model are as follows: first, when the cross shaft 3 needs to be added with lubricant, the inner hexagonal threaded head 526 is rotated to drive the cylinder rod 521 to move upwards, the cylinder rod 521 drives the oil inlet 524 to align with the oil outlet hole 514, and at the same time, the oil discharge hole 525 is separated from the threaded head 512 and enters the cylinder body 511, so that the lubricant in the cylinder body 511 enters the oil delivery channel 523 through the oil discharge hole 525, and then enters the oil outlet pipe 513 from the oil delivery channel 523 through the oil inlet 524, and finally is discharged into the cross shaft 3 from the oil outlet pipe 513, so that precise lubricant filling can be realized through simple rotation operation without disassembling the transmission shaft, and the maintenance efficiency is significantly improved; after adding the lubricant, the inner hexagonal threaded head 526 is rotated again to drive the cylinder rod 521 to move downwards, the cylinder rod 521 drives the oil inlet 524 to be staggered with the oil outlet hole 514, and at the same time, the oil discharge hole 525 is separated from the cylinder body 511 and enters the threaded head 512, so that the outer wall of the oil outlet pipe 513 blocks the oil inlet 524, and the inner wall of the threaded head 512 blocks the oil discharge hole 525, effectively preventing the lubricant from leaking in the non-filling state.

[0040] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A farm machinery steering transmission shaft assembly with a lubricant containing cavity, comprising a transmission shaft (1), a driving fork head (2) fixed on the transmission shaft (1), a driven fork head (4) connected with the driving fork head (2) through a cross shaft (3), characterized in that: The driven fork head (4) is provided with a lubricating mechanism (5) for supplementing lubricant, and the lubricating mechanism (5) comprises: The main body assembly (51) comprises a cylinder (511) mounted on the cross shaft (3), a threaded head (512) fixedly connected to the lower end of the cylinder (511), an oil outlet pipe (513) fixedly arranged in the center of the threaded head (512), and an oil outlet hole (514) formed in the middle of the oil outlet pipe (513); The control assembly (52) comprises a cylinder rod (521) mounted in the cylinder (511), an oil inlet (524) formed in the lower end of the oil supply channel (523), an oil outlet hole (525) formed in the upper end of the oil supply channel (523), and an internal hexagonal threaded head (526) rotatably mounted on the upper end of the cylinder rod (521).

2. The agricultural steering axle assembly of claim 1, wherein: The top of the cross shaft (3) is fixed with an oil inlet (6), and the inside of the cross shaft (3) is provided with a radial oil channel (7) and is communicated with the oil inlet (6).

3. The agricultural steering axle assembly comprised of a belt with a lubricant containment cavity of claim 1, wherein: The main body assembly (51) further comprises a threaded hole (515) formed in the inside of the upper end of the cylinder (511), and the cylinder (511) is screw-mounted with the internal hexagonal threaded head (526) through the threaded hole (515).

4. The agricultural steering axle assembly comprised of a lubricant containing cavity as defined in claim 1, wherein: The main body assembly (51) further comprises an oil injection port (516) fixedly connected to the outside of the cylinder (511), and an internal hexagonal plug (517) screw-mounted in the inside of the oil injection port (516).

5. The agricultural steering axle assembly comprised of a belt with a lubricant containment cavity of claim 1, wherein: The control assembly (52) further comprises a key bar (522) fixedly arranged on the lower end of the outer wall of the cylinder rod (521), and the cylinder rod (521) is slidingly mounted with the threaded head (512) through the key bar (522).

6. The agricultural steering axle assembly of claim 2, wherein: The outer wall of the threaded head (512) is screw-connected with the inner wall of the oil inlet (6).

Images