A highly sealed agricultural machinery bearing

Abstract

The present invention belongs to the technical field of agricultural machinery, and discloses a high-sealing agricultural machinery bearing, including a sealing mechanism, wherein the sealing mechanism includes a supporting ring, a clamping block is fixedly connected to the supporting ring, a sealing ring is fixedly connected to the inside of the supporting ring, a sealing lip, a dustproof lip and a supporting lip are fixedly connected to the side of the sealing ring away from the clamping block, a plurality of first sliding grooves are provided inside the sealing ring, and a spring is fixedly connected to the inside of the plurality of first sliding grooves; the present invention improves the sealing performance of the device by arranging the cooperation of structures such as the sealing lip and the dustproof lip, and the sealing lip can effectively block dust and moisture, and because the rubber material has good elastic recovery performance, it can continuously provide a sealing effect during the rotation of the shaft, while reducing the wear caused by friction, and the device is sealed at three levels by the cooperation of the sealing lip, the dustproof lip and the supporting lip, thereby improving the sealing performance of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, in particular to a high-sealing agricultural machinery bearing. Background Art

[0002] Agricultural machinery refers to a general term for various mechanical equipment used in agricultural production, such as large and small tractors, land leveling machinery, plows, tillers, micro-tillage machines, rice transplanters, seeders, threshers, pumps, combine harvesters, roller blinds, thermal insulation felts and other equipment. The high performance and high reliability of the equipment are the key to ensuring agricultural production efficiency and quality. Agricultural machinery bearings, as an indispensable core component of agricultural machinery, have a direct impact on the operating status and service life of the entire equipment. In the actual operating environment, agricultural machinery often faces complex and changeable natural conditions, such as mud, dust, moisture, etc. These factors place extremely high demands on the sealing performance of the bearings.

[0003] Most of the existing agricultural machinery bearings use a single-layer rubber ring for sealing, and there is no protruding lip structure. They rely on the elastic deformation of the material to form a seal, such as the O-ring is sealed by close contact with the installation groove through extrusion deformation, which has no effect under static and low-speed conditions, but at higher speeds and higher external pressures, the problem of insufficient sealing of the single-layer rubber ring will be reflected. Therefore, a high-sealing agricultural machinery bearing is proposed, which has the effect of improving the sealing of the device. Summary of the invention

[0004] In order to solve the problem proposed in the above background technology that most of them use single-layer rubber rings for sealing, and there is no protruding lip structure. They rely on the elastic deformation of the material to form a seal, such as the O-ring is sealed by close contact with the installation groove through extrusion deformation, which has no effect under static and low-speed conditions, but at higher speeds and higher external pressures, it will show the problem of insufficient sealing. The present invention provides a high-sealing agricultural machinery bearing.

[0005] To achieve the above object, the present invention provides the following technical solutions: a highly sealed agricultural machinery bearing, comprising a sealing mechanism, wherein a ventilation mechanism and a supporting mechanism are arranged inside the sealing mechanism, and the sealing mechanism is arranged inside the main body mechanism;

[0006] The sealing mechanism includes a support ring, a clamping block is fixedly connected to the support ring, a sealing ring is fixedly connected to the inside of the support ring, a sealing lip, a dustproof lip and a support lip are fixedly connected to the side of the sealing ring away from the clamping block, a plurality of first sliding grooves are provided inside the sealing ring, a plurality of springs are fixedly connected to the inside of the first sliding grooves, a first sliding rod is slidably connected to the inside of the first sliding groove, and the ends of the plurality of first sliding rods away from the springs are fixedly connected to the buffer ring.

[0007] Preferably, the dustproof lip is located between the sealing lip and the supporting lip, the end of the first sliding rod away from the spring passes through the inner wall of the first sliding groove and extends to the side of the sealing ring away from the block, the buffer ring is located between the dustproof lip and the sealing lip, the side of the buffer ring away from the first sliding rod is against the surface of the sealing lip, the first sliding rod is elastically connected to the inner wall of the first sliding groove through the spring, the sealing ring is made of rubber material, and the support ring is made of metal material.

[0008] Preferably, the ventilation mechanism includes a first ventilation groove opened on the side of the first slide groove away from the buffer ring, an inflation groove is opened inside the dust lip, a fixed block is fixedly connected to the side of the sealing ring away from the blocking block, an end of the fixed block away from the sealing ring is fixedly connected to an airbag, and a second ventilation groove is opened inside the fixed block.

[0009] Preferably, the first ventilation groove extends from one end of the first slide groove to the inside of the inflation groove, the fixing block is located between the dustproof lip and the support lip, and the second ventilation groove extends from one side of the airbag through the second ventilation groove to the inside of the sealing ring.

[0010] Preferably, the support mechanism comprises a second slide groove opened inside the sealing ring, the interior of the second slide groove is slidably connected with a second slide rod, the second slide rod is fixedly connected with a support block, and the airbag abuts against a side of the dust lip away from the sealing lip.

[0011] Preferably, one end of the second ventilation groove away from the airbag is communicated with the second slide groove, and the support block is made of a hard material.

[0012] Preferably, one end of the second slide bar close to the support block passes through the second slide groove and extends to a side of the sealing ring away from the support ring, and the support block is located on a side of the support lip away from the dust lip.

[0013] Preferably, the main body mechanism includes an inner ring, two fixing screws are threadedly connected to the inner ring, a plurality of balls are slidably connected to the inner ring, retaining frames are clamped on both sides of the plurality of balls, two retaining frames are fixedly connected by a plurality of rivets, and the plurality of rivets are respectively located between the plurality of balls, an outer ring is rotatably connected to the inner ring, a positioning pin is clamped on the outer ring, and two slots are provided inside the outer ring.

[0014] Preferably, the side of the ball away from the inner ring is slidably connected to the inner wall of the outer ring, the size of the slot is matched with the size of the block, and the slot and the block are snap-connected.

[0015] Preferably, the support ring is located between the outer ring and the inner ring, the sealing lip, the dust lip and the end of the support lip away from the sealing ring are all in contact with the surface of the inner ring, and the lower ends of the sealing lip, the dust lip and the support lip are all biased towards the side away from the ball.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention improves the sealing performance of the device by providing the cooperation of the sealing lip and the dustproof lip. The sealing lip can effectively block dust and moisture. Since the rubber material has good elastic recovery performance, it can continuously provide a sealing effect during the rotation of the shaft and reduce the wear caused by friction. The sealing lip, the dustproof lip and the supporting lip cooperate to perform three-level sealing on the device, thereby improving the sealing performance of the device.

[0018] The present invention improves the sealing strength of the sealing lip by arranging the cooperation of structures such as the buffer ring and the first slide groove. When the external pressure is large and causes dust to squeeze the sealing lip and enter between the dustproof lip and the sealing lip, the buffer ring will be squeezed to make the first slide bar slide in the direction close to the spring inside the first slide groove, squeezing the spring and the gas inside the first slide groove. The movement of the first slide bar is buffered by the elastic force of the spring, thereby buffering the deformation of the sealing lip. This can not only reduce the amplitude and speed of the deformation of the sealing lip and improve the sealing strength of the sealing lip, but also avoid the sealing lip from suddenly deforming and causing wear when the external pressure is large, resulting in a reduction in service life.

[0019] The present invention improves the sealing performance of the dustproof lip by arranging the cooperation of the first ventilation groove and the inflation groove and other structures. When the first slide bar squeezes the gas inside the first slide groove, the gas inside the first slide groove will enter the inflation groove through the first ventilation groove to fill the dustproof lip, thereby blocking the dust between the sealing lip and the dustproof lip. In addition, the filled dustproof lip is more difficult to deform and can adapt to greater external pressure, thereby further improving the sealing performance of the device and the service life of the sealing mechanism.

[0020] The present invention cooperates with structures such as an airbag and a second slide bar. When the dust lip is deformed under the action of external pressure, the airbag will be squeezed, so that the gas inside the airbag enters the interior of the second slide groove through the second ventilation groove, thereby increasing the air pressure inside the second slide groove. The second slide bar is supported by the air pressure, so that the support block continuously supports the support lip under the action of the air pressure, thereby improving the support strength of the support lip, avoiding deformation of the support lip that causes external impurities to enter the interior of the outer ring, and putting the device in a high sealing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a front view structural diagram of the main mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the main mechanism of the present invention;

[0024] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0026] Figure 6 This is a schematic diagram of the inner structure of the outer ring of the present invention;

[0027] Figure 7 This is a schematic diagram of the structural relationship between the support ring and the inner ring of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the sealing mechanism of the present invention;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention.

[0030] In the figure: 1. sealing mechanism; 101. supporting ring; 102. clamping block; 103. sealing ring; 104. sealing lip; 105. dustproof lip; 106. supporting lip; 107. first slide groove; 108. spring; 109. first slide bar; 110. buffer ring; 2. ventilation mechanism; 201. first ventilation groove; 202. charging groove; 203. fixing block; 204. air bag; 205. second ventilation groove; 3. supporting mechanism; 301. second slide groove; 302. second slide bar; 303. supporting block; 4. main body mechanism; 401. inner ring; 402. fixing screw; 403. ball; 404. retaining frame; 405. rivet; 406. outer ring; 407. positioning pin; 408. clamping slot. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, the present invention provides a high-sealing agricultural machinery bearing, comprising a sealing mechanism 1, a ventilation mechanism 2 and a supporting mechanism 3 are arranged inside the sealing mechanism 1, and the sealing mechanism 1 is arranged inside a main body mechanism 4;

[0033] The sealing mechanism 1 includes a support ring 101, to which a clamping block 102 is fixedly connected, a sealing ring 103 is fixedly connected inside the support ring 101, a sealing lip 104, a dustproof lip 105 and a support lip 106 are fixedly connected on the side of the sealing ring 103 away from the clamping block 102, a plurality of first sliding grooves 107 are provided inside the sealing ring 103, a spring 108 is fixedly connected inside the plurality of first sliding grooves 107, a first sliding rod 109 is slidably connected inside the first sliding groove 107, and one end of the plurality of first sliding rods 109 away from the spring 108 is fixedly connected to a buffer ring 110.

[0034] The dustproof lip 105 is located between the sealing lip 104 and the supporting lip 106. The end of the first slide bar 109 away from the spring 108 passes through the inner wall of the first slide groove 107 and extends to the side of the sealing ring 103 away from the block 102. The buffer ring 110 is located between the dustproof lip 105 and the sealing lip 104. The side of the buffer ring 110 away from the first slide bar 109 is against the surface of the sealing lip 104. The first slide bar 109 is elastically connected to the inner wall of the first slide groove 107 through the spring 108. The material of the sealing ring 103 is rubber material, and the material of the supporting ring 101 is metal material.

[0035] The above solution is adopted: by providing the cooperation of the sealing lip 104 and the dustproof lip 105 and other structures, the sealing performance of the device is improved. The sealing lip 104 can effectively block dust and moisture. Since the rubber material has good elastic recovery performance, it can continuously provide a sealing effect during the rotation of the shaft, while reducing the wear caused by friction. The sealing lip 104, the dustproof lip 105 and the supporting lip 106 cooperate to perform three-level sealing on the device, thereby improving the sealing performance of the device.

[0036] The cooperation of the buffer ring 110 and the first slide groove 107 and other structures can improve the sealing strength of the sealing lip 104. When the external pressure is high and causes dust to squeeze the sealing lip 104 and enter between the dustproof lip 105 and the sealing lip 104, the buffer ring 110 will be squeezed to make the first slide bar 109 slide in the direction close to the spring 108 inside the first slide groove 107, squeezing the spring 108 and the gas inside the first slide groove 107. The elastic force of the spring 108 can buffer the movement of the first slide bar 109, thereby buffering the deformation of the sealing lip 104. This can not only reduce the amplitude and speed of the deformation of the sealing lip 104 and improve the sealing strength of the sealing lip 104, but also avoid the sealing lip 104 from suddenly deforming and causing wear when the external pressure is high, resulting in a reduction in service life.

[0037] like Figure 4As shown, the ventilation mechanism 2 includes a first ventilation groove 201 opened on the side of the first slide groove 107 away from the buffer ring 110, an inflation groove 202 is opened inside the dust lip 105, a fixed block 203 is fixedly connected to the side of the sealing ring 103 away from the blocking block 102, an end of the fixed block 203 away from the sealing ring 103 is fixedly connected to the airbag 204, and a second ventilation groove 205 is opened inside the fixed block 203.

[0038] The first ventilation groove 201 extends from one end of the first slide groove 107 to the inside of the inflation groove 202, the fixing block 203 is located between the dustproof lip 105 and the support lip 106, and the second ventilation groove 205 extends from one side of the airbag 204 to the inside of the sealing ring 103 through the second ventilation groove 205.

[0039] The above scheme is adopted: by setting the cooperation of structures such as the first ventilation groove 201 and the inflation groove 202, the sealing performance of the dustproof lip 105 is improved. When the first slide bar 109 squeezes the gas inside the first slide groove 107, the gas inside the first slide groove 107 will enter the inflation groove 202 through the first ventilation groove 201 to fill the dustproof lip 105, thereby blocking the dust between the sealing lip 104 and the dustproof lip 105. In addition, the filled dustproof lip 105 is more difficult to deform and can adapt to greater external pressure, thereby further improving the sealing performance of the device and the service life of the sealing mechanism 1.

[0040] like Figures 3 to 9 As shown, the support mechanism 3 includes a second slide groove 301 opened inside the sealing ring 103, and the second slide rod 302 is slidably connected inside the second slide groove 301. The second slide rod 302 is fixedly connected to the support block 303, and the air bag 204 is abutted against the side of the dust lip 105 away from the sealing lip 104. The end of the second ventilation groove 205 away from the air bag 204 is communicated with the second slide groove 301. The material of the support block 303 is a hard material. The end of the second slide rod 302 close to the support block 303 passes through the second slide groove 301 and extends to the side of the sealing ring 103 away from the support ring 101. The support block 303 is located on the side of the support lip 106 away from the dust lip 105.

[0041] The main body mechanism 4 includes an inner ring 401, on which two fixing screws 402 are threadedly connected, and a plurality of balls 403 are slidably connected to the inner ring 401. Both sides of the plurality of balls 403 are clamped with retaining frames 404, and the two retaining frames 404 are fixedly connected by a plurality of rivets 405, and the plurality of rivets 405 are respectively located between the plurality of balls 403. An outer ring 406 is rotatably connected to the inner ring 401, and a positioning pin 407 is clamped on the outer ring 406. Two slots 408 are provided inside the outer ring 406.

[0042] The side of the ball 403 away from the inner ring 401 is slidably connected to the inner wall of the outer ring 406, the size of the slot 408 is adapted to the size of the block 102, the slot 408 and the block 102 are clamped, the support ring 101 is located between the outer ring 406 and the inner ring 401, the sealing lip 104, the dustproof lip 105 and the end of the support lip 106 away from the sealing ring 103 are all in contact with the surface of the inner ring 401, and the lower ends of the sealing lip 104, the dustproof lip 105 and the support lip 106 are all biased toward the side away from the ball 403.

[0043] The above scheme is adopted: it can form a close contact with the shaft even in the absence of external pressure. This preload force ensures that the sealing mechanism 1 can firmly fit on the surface of the inner ring 401 to form an initial seal. By setting the cooperation of the airbag 204 and the second slide bar 302 and other structures, when the dust lip 105 is deformed under the action of external pressure, it will squeeze the airbag 204, so that the gas inside the airbag 204 enters the second slide groove 301 through the second ventilation groove 205, thereby increasing the air pressure inside the second slide groove 301, and supporting the second slide bar 302 through the air pressure, so that the support block 303 continuously supports the support lip 106 under the action of air pressure, thereby improving the support strength of the support lip 106, avoiding the deformation of the support lip 106, and causing external impurities to enter the inner part of the outer ring 406, so that the device is in a high sealing state.

[0044] The working principle and use process of the present invention are as follows: first, the bearing is assembled and installed on the agricultural machinery. When the device is working, the sealing lip 104 is set to effectively block dust and moisture. Because the rubber material has good elastic recovery performance, it can continuously provide a sealing effect during the rotation of the shaft, while reducing the wear caused by friction. When the external pressure is large, causing dust to squeeze the sealing lip 104 and enter between the dustproof lip 105 and the sealing lip 104, the buffer ring 110 will be squeezed to make the first slide bar 109 slide in the direction close to the spring 108 inside the first slide groove 107, squeezing the spring 108 and the gas inside the first slide groove 107, and the movement of the first slide bar 109 is buffered by the elastic force of the spring 108, thereby buffering the deformation of the sealing lip 104;

[0045] At the same time, the gas inside the first slide groove 107 enters the charging groove 202 through the first ventilation groove 201 to fill the dust lip 105, thereby blocking the dust between the sealing lip 104 and the dust lip 105. The filled dust lip 105 is more difficult to deform and can adapt to greater external pressure.

[0046] When the dust lip 105 is deformed under the action of external pressure, it will squeeze the airbag 204, so that the gas inside the airbag 204 enters the second slide groove 301 through the second ventilation groove 205, increasing the air pressure inside the second slide groove 301, and supporting the second slide bar 302 through the air pressure, so that the support block 303 can continuously support the support lip 106 under the action of air pressure, thereby preventing the support lip 106 from deforming and causing external impurities to enter the outer ring 406, thereby improving the sealing of the device.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" 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 includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly sealed agricultural machinery bearing, comprising a sealing mechanism (1), characterized in that: The sealing mechanism (1) is provided with a ventilation mechanism (2) and a support mechanism (3) inside, and the sealing mechanism (1) is arranged inside the main body mechanism (4); The sealing mechanism (1) comprises a support ring (101), a clamping block (102) is fixedly connected to the support ring (101), a sealing ring (103) is fixedly connected inside the support ring (101), a sealing lip (104), a dustproof lip (105) and a support lip (106) are fixedly connected on the side of the sealing ring (103) away from the clamping block (102), a plurality of first sliding grooves (107) are provided inside the sealing ring (103), a spring (108) is fixedly connected inside the plurality of first sliding grooves (107), a first sliding rod (109) is slidably connected inside the first sliding groove (107), and one end of the plurality of first sliding rods (109) away from the spring (108) is connected to the buffer ring (110). ), the dustproof lip (105) is located between the sealing lip (104) and the supporting lip (106), the end of the first slide bar (109) away from the spring (108) passes through the inner wall of the first slide groove (107) and extends to the side of the sealing ring (103) away from the block (102), the buffer ring (110) is located between the dustproof lip (105) and the sealing lip (104), the side of the buffer ring (110) away from the first slide bar (109) abuts against the surface of the sealing lip (104), the first slide bar (109) is elastically connected to the inner wall of the first slide groove (107) through the spring (108), the sealing ring (103) is made of rubber material, and the supporting ring (101) is made of metal material.

2. The highly sealed agricultural machinery bearing according to claim 1, characterized in that: The ventilation mechanism (2) comprises a first ventilation groove (201) provided on a side of the first slide groove (107) away from the buffer ring (110), an air filling groove (202) provided inside the dustproof lip (105), a fixed block (203) fixedly connected to a side of the sealing ring (103) away from the clamping block (102), an air bag (204) fixedly connected to an end of the fixed block (203) away from the sealing ring (103), and a second ventilation groove (205) provided inside the fixed block (203).

3. The highly sealed agricultural machinery bearing according to claim 2, characterized in that: One end of the first ventilation groove (201) away from the first slide groove (107) extends to the inside of the inflation groove (202), the fixing block (203) is located between the dustproof lip (105) and the support lip (106), and one side of the second ventilation groove (205) away from the airbag (204) passes through the second ventilation groove (205) and extends to the inside of the sealing ring (103).

4. The highly sealed agricultural machinery bearing according to claim 3, characterized in that: The support mechanism (3) comprises a second slide groove (301) provided inside the sealing ring (103); a second slide rod (302) is slidably connected inside the second slide groove (301); a support block (303) is fixedly connected to the second slide rod (302); and the air bag (204) abuts against a side of the dustproof lip (105) away from the sealing lip (104).

5. The highly sealed agricultural machinery bearing according to claim 4, characterized in that: One end of the second ventilation groove (205) away from the airbag (204) is in communication with the second slide groove (301), and the support block (303) is made of a hard material.

6. The highly sealed agricultural machinery bearing according to claim 5, characterized in that: One end of the second sliding rod (302) close to the support block (303) passes through the second sliding groove (301) and extends to a side of the sealing ring (103) away from the support ring (101), and the support block (303) is located on a side of the support lip (106) away from the dustproof lip (105).

7. The highly sealed agricultural machinery bearing according to claim 6, characterized in that: The main body mechanism (4) comprises an inner ring (401), two fixing screws (402) are threadedly connected to the inner ring (401), a plurality of balls (403) are slidably connected to the inner ring (401), both sides of the plurality of balls (403) are clamped with retaining frames (404), two retaining frames (404) are fixedly connected by a plurality of rivets (405), and the plurality of rivets (405) are respectively located between the plurality of balls (403), an outer ring (406) is rotatably connected to the inner ring (401), a positioning pin (407) is clamped on the outer ring (406), and two clamping grooves (408) are provided inside the outer ring (406).

8. The highly sealed agricultural machinery bearing according to claim 7, characterized in that: The side of the ball (403) away from the inner ring (401) is slidably connected to the inner wall of the outer ring (406); the size of the clamping groove (408) matches the size of the clamping block (102); and the clamping groove (408) and the clamping block (102) are clamped together.

9. The highly sealed agricultural machinery bearing according to claim 8, characterized in that: The support ring (101) is located between the outer ring (406) and the inner ring (401); the ends of the sealing lip (104), the dustproof lip (105) and the support lip (106) away from the sealing ring (103) are all in contact with the surface of the inner ring (401); and the lower ends of the sealing lip (104), the dustproof lip (105) and the support lip (106) are all biased towards the side away from the ball (403).

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