CN215333971U

CN215333971U - Agricultural machinery wheel hub unit convenient to maintain

Info

Publication number: CN215333971U
Application number: CN202121606073.7U
Authority: CN
Inventors: 言奕; 王朱裔; 言行周; 陆玉兰
Original assignee: Changshu Elite Parts Co ltd
Current assignee: Changshu Elite Parts Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-28
Anticipated expiration: 2031-07-15

Abstract

The utility model provides an agricultural machinery wheel hub unit convenient to maintain, includes flange spare, and flange spare includes flange disc and location barrel, has flange spare through-hole in the flange spare, establishes the axis of rotation in the flange spare through-hole, and shield and oil blanket, characteristics are established respectively to the both ends opening part of flange spare through-hole: there is axis of rotation location screw thread section at axial one end tip of axis of rotation, there is axis of rotation connection screw thread portion on the body of rod of the other end, axis of rotation connection screw thread portion is located the outside of flange spare through-hole, there is the slotted nut on the axis of rotation location screw thread portion, be connected through a pair of bearing between flange spare and the axis of rotation, space between two bearings constitutes the oil filling chamber, establish the glib talker constant head tank on the periphery side surface of location barrel, the oiling screw thread through-hole is established on the side surface relative with the opening part of glib talker constant head tank, there is glib talker spare in the glib talker constant head tank, glib talker spare holds in the glib talker constant head tank. Simple structure, safe and reliable, change swiftly convenient, with low costs, long service life.

Description

Agricultural machinery wheel hub unit convenient to maintain

Technical Field

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly relates to an agricultural mechanical hub unit convenient to maintain.

Background

The hub unit is an important part of medium and large-sized agricultural machinery, and is a functional part which is connected with a traction mechanism of the medium and large-sized agricultural machinery, such as a colter disc, a sowing wheel and the like and directly acts on soil parts. Agricultural machinery requires to be capable of achieving long-term fault-free reliable operation in a severe environment, and internal parts of a hub unit, particularly a bearing for realizing the rotary connection of a flange part and a rotating shaft, bear severe requirements such as impact, vibration, pollution, moisture, corrosion and the like in actual use, so that the internal parts of the hub unit of the agricultural machine need to be maintained and maintained regularly.

The Chinese utility model patent No. CN207449518U relates to a wheel hub unit suitable for agricultural machinery, which comprises a shaft, the outer end of the shaft is provided with a left inner ring and a right inner ring which are semi-embedded, the left inner ring and the right inner ring are distributed in a splicing way, the outer empty sleeve of the left inner ring and the right inner ring is provided with an outer ring, a bearing outer ring is arranged between the left inner ring and the outer ring and between the right inner ring and the outer ring, rollers are respectively arranged between the left inner ring and the bearing outer ring and between the right inner ring and the bearing outer ring, the rollers are positioned by a retainer, the left ends of the shaft and the outer ring are dustproof by a dustproof cover, the right ends of the shaft and the outer ring are dustproof by an outer cover, the right end of the shaft is provided with a nut which is connected with the right inner ring in a blocking way, the wheel hub unit has the advantages of compact structure, high installation precision and long service life, but the wheel hub unit can not realize the quick and convenient maintenance of internal parts, when the internal part needs to be lubricated and maintained, the external outer cover and the dustproof cover must be firstly removed, the operation is complicated, the dismounting process is very complicated, and the optimization of the working efficiency and the reduction of the use cost are not facilitated.

In view of the above, there is a need for a reasonable improvement in the structure of the existing hub unit of an agricultural machine. For this reason, the applicant has made an advantageous search for a design, in which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a simple-structure, safe and reliable hub unit of agricultural machinery convenient to maintain, which is beneficial to lubricating and maintaining internal parts by arranging a nozzle positioning groove on a connecting flange piece and assembling a nozzle piece, is beneficial to accommodating the nozzle piece in the nozzle positioning groove without extending outwards, effectively ensures that a sand stone lug cannot damage the nozzle piece, ensures the safety and reliability of the nozzle piece, and is convenient for forming a circle of gap between a dustproof cover and a through hole of the connecting flange piece, so that a worker can conveniently take off the dustproof cover to quickly and conveniently replace the internal parts.

The utility model aims to accomplish the task, and provides an agricultural mechanical hub unit convenient to maintain, which comprises a connecting flange piece, wherein the connecting flange piece comprises a flange disc and a positioning cylinder body convexly arranged on one side surface of the flange disc, a connecting flange piece through hole penetrating through the length direction of the positioning cylinder body and the thickness direction of the flange disc is formed in the connecting flange piece, a rotating shaft penetrates through the connecting flange piece through hole, a dustproof cover and an oil seal sleeved on the rotating shaft are respectively arranged at openings at two ends of the connecting flange piece through hole, the oil seal is arranged between the rotating shaft and the positioning cylinder body, a rotating shaft positioning thread section is formed at one end part of the rotating shaft in the axial direction, and a rotating shaft connecting thread section is formed on a rod body at one end of the rotating shaft far away from the rotating shaft positioning thread section in the axial direction, the rotating shaft connecting thread part is positioned outside the through hole of the flange part, a slotted nut is in threaded fit on the rotating shaft positioning thread part, a split pin for locking the rotating shaft positioning thread part and the slotted nut is arranged between the rotating shaft positioning thread part and the slotted nut in a penetrating way, the connecting flange part and the rotating shaft are in rotational connection through a pair of bearings arranged in the through hole of the flange part, the two bearings are separated by a certain distance, the space between the two bearings is formed into an oil injection cavity, an oil nozzle positioning groove is arranged on the peripheral side surface of the positioning cylinder body and at the position corresponding to the oil injection cavity, an oil injection thread through hole communicated with the oil injection cavity is arranged on the side surface of the oil nozzle positioning groove opposite to the opening, and an oil nozzle part in threaded fit connection with the oil injection thread through hole is positioned and installed in the oil nozzle positioning groove, the nozzle piece is accommodated in the nozzle positioning groove, and the end part of the nozzle piece, which is far away from the oil filling threaded through hole, does not protrude outwards from the nozzle positioning groove.

In a specific embodiment of the utility model, a plurality of connecting square holes are arranged on the flange disc of the connecting flange part at intervals along the circumferential direction of the flange disc.

In another specific embodiment of the present invention, a threaded protective sleeve is threadedly coupled to the connecting threaded portion of the rotating shaft.

In another specific embodiment of the utility model, a circle of oil seal positioning steps are formed at an opening of one end of the connecting flange piece through hole far away from the flange disc, the oil seal is positioned and installed on the oil seal positioning steps, and a bushing is arranged between the oil seal and the oil seal positioning steps.

In still another specific embodiment of the present invention, a rotating shaft boss portion is formed on a shaft body of the rotating shaft, and a rotating shaft boss portion positioning step is provided on the oil seal, the rotating shaft boss portion being fittingly mounted on the rotating shaft boss portion positioning step.

In a further specific embodiment of the present invention, both of the bearings are tapered roller bearings, and both of the bearings are fixedly installed in the through hole of the flange member and constitute an integral rolling structure with the connecting flange member.

In yet another specific embodiment of the present invention, two of the bearings are respectively disposed at a position close to the oil seal and close to the slotted nut, and the oil seal abuts against the adjacent bearings, and a gasket is disposed between the slotted nut and the adjacent bearings.

In a more specific embodiment of the present invention, a ring of dust cap positioning grooves is formed at an opening of the connecting flange member through hole corresponding to one end of the dust cap, the radial diameter of the dustproof cover positioning groove is larger than that of the connecting flange piece through hole, the dustproof cover comprises a dustproof cover main panel and a dustproof cover locking sleeve body, the dustproof cover main panel and the dustproof cover locking sleeve body are integrally formed, the dustproof cover locking sleeve body is arranged on the surface of one side of the dustproof cover main panel in a protruding mode, the dust cap locking sleeve body extends into the through hole of the connecting flange part and is in locking fit with the connecting flange part, and a dustproof cover flange part is formed at the joint of the dustproof cover main panel and the dustproof cover locking sleeve body, the radial diameter of the main panel of the dust cover is larger than that of the locking sleeve body of the dust cover, the flange part of the dust cover is matched with the step surface of the positioning groove of the dust cover, and a ring of operating space is formed between the dust cap flange portion and the inner peripheral surface of the dust cap positioning groove.

After the structure is adopted, the utility model has the beneficial effects that: firstly, the positioning cylinder body is provided with the oil nozzle positioning groove and the oil nozzle piece, the oil nozzle piece is accommodated in the oil nozzle positioning groove and does not extend out of the outward oil nozzle positioning groove, namely the installation height of the oil nozzle piece is smaller than the depth of the oil nozzle positioning groove, on one hand, grease can be effectively injected into the through hole of the connecting flange piece to lubricate and maintain internal parts, particularly a bearing unit, on the other hand, external sand stones or soil blocks can be prevented from being collided to damage the oil nozzle piece, and the maintenance is convenient; two, through seting up a round shield constant head tank and set up shield flange portion on the shield, be formed with round operation space between the interior circumference surface of this shield flange portion and this shield constant head tank, this operation space can effectively facilitate the user utilize common tools such as screwdriver just can pry the shield and take out, conveniently maintain internals especially bearing unit, appear damaging under the out-of-use condition in wheel hub unit, only need to change internals and just can continue to use in whole wheel hub unit need not to be changed, use cost is reduced, and the service life is prolonged.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is a plan sectional view of the structure shown in fig. 1.

In the figure: 1. the oil seal structure comprises a connecting flange part, 11 flange discs, 111 connecting square holes, 12 positioning cylinder bodies, 121 oil nozzle positioning grooves, 1211 oil injection thread through holes, 13 connecting flange part through holes, 131 oil injection cavities, 132 oil seal positioning steps, 133 dust cover positioning grooves, 1331 operating gaps, 14 dust covers, 141 dust cover main panels, 1411 dust cover flange parts, 142 dust cover locking sleeve bodies, 15 oil seals, 151 bushings, 152 rotating shaft boss part positioning steps, a connecting flange part, 11 connecting flange disc parts, 111 connecting square holes, 12 positioning cylinder bodies, 121 oil nozzle positioning grooves, 1211 oil injection thread through holes, 13 oil seal positioning steps, 133 dust cover positioning grooves, 1331 operating gaps, 14 dust covers, 141 dust cover main panels, 1411 dust cover flange parts, 142 oil seal locking sleeve bodies, 15 oil seals, 151 bushings and 152 rotating shaft boss part positioning steps; 2. the rotating shaft comprises a rotating shaft, 21 rotating shaft positioning threaded sections, 22 rotating shaft connecting threaded sections, 221 thread protective sleeves and 23 rotating shaft boss parts; 3. slotted nuts, 31, washers; 4. a cotter pin; 5. a bearing; 6. a nozzle piece.

Detailed Description

In order to clearly understand the technical spirit and advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, all concepts related to the directionality or orientation of up, down, left, right, front, and back are based on the position state of the legend being described.

Referring to fig. 1 and 2, an agricultural machine hub unit convenient for maintenance comprises a connection flange member 1, the connection flange member 1 comprises a flange disc 11 and a positioning cylinder 12 convexly formed on one side surface of the flange disc 11, a connection flange member through hole 13 penetrating through the length direction of the positioning cylinder 12 and the thickness direction of the flange disc 11 is formed in the connection flange member 1, a rotating shaft 2 penetrates through the connection flange member through hole 13, a dust cap 14 and an oil seal 15 sleeved on the rotating shaft 2 are respectively arranged at openings at two ends of the connection flange member through hole 13, the oil seal 15 is arranged between the rotating shaft 2 and the positioning cylinder 12, the dust cap 14 and the oil seal 15 can effectively seal openings at two ends of the connection flange member through hole 13, thereby preventing grease in the connection flange member through hole 13 from overflowing outwards, and avoid foreign matters such as sand, stone and soil blocks from entering the through hole 13 of the connecting flange piece and corroding and damaging internal components.

The technical key points of the technical scheme provided by the utility model are as follows: a rotating shaft positioning threaded section 21 is formed at one end of the rotating shaft 2 in the axial direction, a rotating shaft connecting threaded section 22 is formed on the rod body at one end of the rotating shaft 2 away from the rotating shaft positioning threaded section 21 in the axial direction, the rotating shaft connecting threaded section 22 is positioned outside the flange member through hole 13, a slotted nut 3 is screwed on the rotating shaft positioning threaded section 21, a split pin 4 for locking the rotating shaft positioning threaded section 21 and the slotted nut 3 is arranged between the rotating shaft positioning threaded section 21 and the slotted nut 3 in a penetrating manner, the connecting flange member 1 and the rotating shaft 2 are rotatably connected through a pair of bearings 5 arranged in the flange member through hole 13, the two bearings 5 are separated by a certain distance, a filling oil cavity 131 is formed in the space between the two bearings, and an oil nozzle positioning groove 121 is formed on the outer peripheral side surface of the positioning cylinder 12 at a position corresponding to the filling oil cavity 131, and a grease-injecting threaded through hole 1211 communicated with the grease-injecting cavity 131 is formed on a surface of the opposite side of the opening of the grease-nipple locating groove 121, a grease-nipple 6 in threaded fit connection with the grease-injecting threaded through hole 1211 is positioned and mounted in the grease-nipple locating groove 121, the grease-nipple 6 is accommodated in the grease-nipple locating groove 121, and an end portion of the grease-nipple 6 far away from the grease-injecting threaded through hole 1211 does not protrude out of the grease-nipple locating groove 121, i.e., the mounting height of the grease-nipple 6 is smaller than the depth of the grease-nipple locating groove 121. When the user need lubricate the maintenance operation to the wheel hub unit, need not the dismouting just can inject grease in to flange spare through-hole 13 through glib spare 6 and lubricate corresponding part, and because aforementioned glib spare 6 holds in glib spare constant head tank 121 and does not lean out this outside glib spare constant head tank 121, can guarantee that agricultural machine is at the during operation, grit or clod can not the striking damage glib spare 6, guarantee the safety of glib spare 6.

In the present embodiment, a plurality of square connecting holes 111 are formed at intervals in the circumferential direction of the flange disk 11 of the connecting flange member 1, and the flange disk 11 can be connected to a component such as a disk coulter or a sowing wheel on an agricultural machine in a fast and fixed manner through the square connecting holes 111.

Further, a thread protector 221 is threadedly engaged with the rotary shaft coupling thread portion 22 of the rotary shaft 2, and the thread protector 221 can effectively protect the rotary shaft coupling thread portion 22 of the rotary shaft 2 before the hub unit is integrally assembled.

With continued reference to fig. 1 and 2, a ring of oil seal positioning steps 132 is formed at an opening of the connecting flange member through hole 13 away from the end of the flange disk 11, the oil seal 15 is positioned and mounted on the oil seal positioning steps 132, and a bushing 151 is disposed between the oil seal 15 and the oil seal positioning steps 132.

In the present embodiment, a rotation shaft boss portion 23 is formed on the shaft body of the rotation shaft 2, a rotation shaft boss portion positioning step 152 is provided on the oil seal 15, and the rotation shaft boss portion 23 is fitted on the rotation shaft boss portion positioning step 152.

Further, the two bearings 5 are tapered roller bearings, and the two bearings 5 are both fixedly installed in the flange member through hole 13 and constitute an integral rolling structure with the connecting flange member 1.

Further, two of the aforementioned bearings 5 are disposed at positions close to the aforementioned oil seal 15 and close to the aforementioned notched nut 3, respectively, and the aforementioned oil seal 15 abuts against the adjacent bearing 5, and a gasket 31 is disposed between the notched nut 3 and the adjacent bearing 5.

In this embodiment, a ring of dust-proof cover positioning slots 133 is formed at an opening of the flange member through hole 13 corresponding to an end of the dust-proof cover 14, a radial diameter of the dust-proof cover positioning slots 133 is greater than a radial diameter of the flange member through hole 13, the dust-proof cover 14 includes a main panel 141 of the dust-proof cover and a ring of locking sleeve 142 of the dust-proof cover protruding from a side surface of the main panel 141 of the dust-proof cover, the locking sleeve 142 of the dust-proof cover protrudes into the flange member through hole 13 and is locked with the flange member through hole, a protruding ring 1411 of the dust-proof cover is formed at a connection position of the main panel 141 of the dust-proof cover and the locking sleeve 142 of the dust-proof cover, the radial diameter of the main panel 141 of the dust-proof cover is greater than the radial diameter of the locking sleeve 142 of the dust-proof cover, the protruding ring 1411 of the dust-proof cover is matched with a step surface of the positioning slots 133 of the dust-proof cover, a circle of operation gap 1331 is formed between the dust cover flange 1411 and the inner peripheral surface of the dust cover positioning groove 133, and the operation gap 1331 can be used for effectively and conveniently prying the dust cover 14 by a user by using a common tool such as a screwdriver and the like, so that the internal components can be quickly maintained.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims

1. An agricultural machinery hub unit convenient for maintenance comprises a connecting flange piece (1), wherein the connecting flange piece (1) comprises a flange disc (11) and a positioning cylinder body (12) which is convexly arranged on one side surface of the flange disc (11), a connecting flange piece through hole (13) which penetrates through the length direction of the positioning cylinder body (12) and the thickness direction of the flange disc (11) is formed in the connecting flange piece (1), a rotating shaft (2) is arranged in the connecting flange piece through hole (13) in a penetrating manner, a dustproof cover (14) and an oil seal (15) sleeved on the rotating shaft (2) are respectively arranged at openings at two ends of the connecting flange piece through hole (13), the oil seal (15) is arranged between the rotating shaft (2) and the positioning cylinder body (12), and the agricultural machinery hub unit is characterized in that a rotating shaft positioning thread section (21) is formed at one axial end part of the rotating shaft (2), a rotating shaft connecting thread part (22) is formed on a rod body at one end of the rotating shaft (2) which is far away from the rotating shaft positioning thread part (21) in the axial direction, the rotating shaft connecting thread part (22) is positioned outside the flange part through hole (13), a slotted nut (3) is in threaded fit on the rotating shaft positioning thread part (21), a split pin (4) for locking the rotating shaft connecting thread part (22) and the slotted nut (3) is arranged between the rotating shaft positioning thread part (21) and the slotted nut (3) in a penetrating way, the connecting flange part (1) and the rotating shaft (2) are in rotating connection through a pair of bearings (5) arranged in the flange part through hole (13), the two bearings (5) are separated by a certain distance, a space between the two bearings is formed into an oil injection cavity (131), and an oil nozzle positioning groove (121) is formed on the outer peripheral side surface of the positioning cylinder body (12) and at the position corresponding to the oil injection cavity (131), and a grease filling threaded through hole (1211) communicated with the grease filling cavity (131) is formed in the surface of one side, opposite to the opening, of the grease fitting positioning groove (121), a grease fitting piece (6) in threaded fit connection with the grease filling threaded through hole (1211) is positioned and installed in the grease fitting positioning groove (121), and the grease fitting piece (6) is accommodated in the grease fitting positioning groove (121) while the end part of the end, far away from the grease filling threaded through hole (1211), of the grease fitting piece does not extend out of the grease fitting positioning groove (121).

2. An agricultural machine hub unit convenient for maintenance according to claim 1, characterized in that a plurality of connecting square holes (111) are provided on the flange disc (11) of the connecting flange member (1) at intervals along the circumferential direction thereof.

3. An agricultural machine hub unit for facilitating maintenance according to claim 1, wherein a screw protector (221) is screw-coupled to the rotation shaft coupling screw portion (22) of the rotation shaft (2).

4. An agricultural machine hub unit convenient for maintenance according to claim 1, wherein a ring of oil seal positioning steps (132) are formed at an opening of one end of the connecting flange member through hole (13) far away from the flange disc (11), the oil seal (15) is positioned and mounted on the oil seal positioning steps (132), and a bushing (151) is arranged between the oil seal (15) and the oil seal positioning steps (132).

5. An agricultural machine hub unit facilitating maintenance according to claim 1, wherein a rotating shaft boss portion (23) is formed on a shaft body of the rotating shaft (2), and a rotating shaft boss portion positioning step (152) is provided on the oil seal (15), the rotating shaft boss portion (23) being fitted on the rotating shaft boss portion positioning step (152).

6. An agricultural machine hub unit for facilitating maintenance according to claim 1, characterized in that both of the bearings (5) are tapered roller bearings, and both of the bearings (5) are fixedly installed in the flange member through hole (13) and constitute an integral rolling structure with the attachment flange member (1).

7. An agricultural mechanical hub unit facilitating maintenance according to claim 1, wherein two of the bearings (5) are provided at positions close to the oil seal (15) and close to the grooved nut (3), respectively, and the oil seal (15) abuts against the adjacent bearing (5), and a gasket (31) is provided between the grooved nut (3) and the adjacent bearing (5).

8. The hub unit of an agricultural machine convenient for maintenance as claimed in claim 1, wherein a ring of dust cover positioning grooves (133) is formed at an opening of the end of the connecting flange member through hole (13) corresponding to the dust cover (14), the radial diameter of the dust cover positioning grooves (133) is larger than that of the connecting flange member through hole (13), the dust cover (14) comprises a dust cover main panel (141) and a dust cover locking sleeve body (142), the dust cover main panel (141) and the dust cover locking sleeve body (142) are integrally formed, the dust cover locking sleeve body (142) is inserted into the connecting flange member through hole (13) and is in locking engagement with the connecting flange member through hole (13), a dust cover flange portion (1411) is formed at the joint of the dust cover main panel (141) and the dust cover locking sleeve body (142), and the radial diameter of the dust cover main panel (141) is larger than that of the dust cover locking sleeve body (142) The dust cover flange portion (1411) and the step surface of the dust cover positioning groove (133) are fitted to each other, and a ring of operating space (1331) is formed between the dust cover flange portion (1411) and the inner peripheral surface of the dust cover positioning groove (133).