CN103291766B - A kind of shaft end supporting device and there is the rubber roll husker of this device - Google Patents

Abstract

The invention discloses a shaft end support device and a rubber roller huller with the device, which relates to the field of mechanical equipment. The end support device includes a shaft head (1), an auxiliary support body (10), a bearing seat (9), Bearing end cover (6), bearing (2), also includes coaxial positioning support sleeve (3), connecting screw (4) and sealing device (5). The overall disassembly and assembly of the shaft end support device can be realized by disassembling the connecting screw 4 . The rubber roller huller with this device is equipped with this kind of shaft end supporting device at the cantilever ends of the fast roller shaft (1a) and the slow roller shaft (1b). The shaft end support device is convenient for disassembly and assembly, simple in structure, accurate in positioning of the shaft end support, reliable in support, simple in maintenance and long in service life.

Description

A shaft end support device and a rubber roller huller with the device

technical field

The invention belongs to the field of mechanical equipment, in particular to a shaft end supporting device and a rubber roller huller with the shaft end supporting device.

Background technique

The main shaft of many equipment is equipped with working parts that need to be replaced frequently. The main shaft is supported at one end and cantilevered at the other end. In order to reduce or eliminate the vibration of the cantilever end of the main shaft, auxiliary supports are often added at the cantilever end of the main shaft. At present, most of the commonly used shaft end auxiliary supports use bearing supports. If the shaft of this type of shaft end support device and the inner ring of the bearing adopt conventional cooperation, it will be inconvenient to disassemble and assemble, and the shaft end will be damaged due to frequent disassembly; if the shaft and the inner ring of the bearing are used There is a certain gap between the rings to meet the convenience of disassembly and assembly, and the shaft and the bearing will be different from each other, which will affect the positioning accuracy of the support, resulting in unreliable support and other problems.

Husking is one of the key processes in rice production. At present, the husking process mainly uses rubber roller huskers to complete the husking of rice. The main working components of the rubber roller husker are a pair of husking rubber rollers that rotate in opposite directions at a differential speed. The husking rubber rollers are installed on two main shafts, and the husking rollers need to be replaced frequently. According to the length of the rubber roller of the rubber roller huller, the structure of the rubber roller and the supporting method of the two main shafts are also different. Generally, the hulling rubber rollers with a length of 10 inches or less adopt a wheel structure, and the hulling rubber rollers with a length of 14 inches or more adopt a sleeve structure; Both the main shafts are supported by cantilever, and the two main shafts of the husker with the length of the rubber roller more than 14 inches are supported by double ends. The cantilever-supported rubber roller husker adopts synchronous toothed belt transmission without a gearbox. Its transmission structure is compact and the noise is low. It is obvious that the cantilever support structure has been widely used in the husker, but the cantilever support husker also has the disadvantages of taper and grooving on the working surface of the rubber roller during operation. In order to solve the above problems, an auxiliary support is usually added to the cantilever end of the cantilever support structure. Because the fast and slow rollers need to be exchanged and replaced frequently when the rubber rollers are working, the auxiliary support device at the cantilever end of the main shaft of the hulling rubber rollers must firstly be able to meet the replacement of the rubber rollers and facilitate disassembly and assembly, and second, ensure accurate positioning and reliable support. Simple structure and long service life.

The Chinese patent No. 200720063777 for the rubber roller supporting device of the hulling machine and the patent No. 200920259468 for the auxiliary supporting device for the width plate type rubber roller of the hulling machine are all provided with an auxiliary bearing seat assembly supporting device at the cantilever end of the main shaft of the hulling rubber roller. There is a shaft sleeve between the main shaft of the rubber roller and the inner ring of the bearing. The hanging end of the main shaft of the rubber roller is inserted into the sleeve. The gap between the hanging end of the main shaft and the inner hole of the shaft sleeve is large to facilitate the replacement of the rubber roller. Disassemble. Although the auxiliary support devices introduced by the above two patent technologies can basically meet the requirements of easy disassembly, due to the large gap between the main shaft at the overhanging end and the inner hole of the bushing, the main shaft at the overhanging end is not completely coaxial with the inner ring of the bearing, making the The positioning accuracy and reliability of the main shaft support at the cantilever end are greatly reduced, which affects the work and stability of the two rubber rollers, and may cause a certain amount of head-to-toe deviation of the rubber rollers or vibration of the main shaft at the cantilever end. At the same time, due to the dust in the working environment of the rice huller, the gap between the main shaft and the shaft sleeve at the hanging end is easy to enter the dust, and the disassembly will be affected when the equipment is shut down for a long time.

Contents of the invention

The object of the present invention is to provide a shaft end support device with simple structure, convenient assembly and disassembly, accurate positioning and reliable support and a rubber roller huller with the support device against the state of the prior art.

In order to achieve the above purpose, the technical solution of the shaft end support device of the present invention is: the shaft end support device includes a shaft head 1, an auxiliary support body 10, a bearing seat 9, screws 7 and 8, a bearing end cover 6, and a bearing 2. It is characterized in that it also includes a coaxial positioning support sleeve 3 , a connecting screw 4 and a sealing device 5 . The auxiliary support body 10 is detachable and can be directly or indirectly positioned relative to the main support seat at the other end of the shaft head; the bearing seat 9 is fixed on the auxiliary support body 10 by screws 8, and the bearing 2 is installed in the bearing seat 9. The bearing end cover 6 is fixed on the bearing seat 9 by screws 7; the outer ring of the bearing 2 matches the inner hole of the bearing seat 9, and the inner ring of the bearing 2 matches the outer cylindrical surface of the coaxial positioning support sleeve 3; the shaft head 1 There is a screw hole in the center of the end face; one end of the coaxial positioning support sleeve 3 is matched with the end face of the shaft head 1, and the coaxial positioning support sleeve 3 is connected to the end face of the shaft head 1 coaxially through the connecting screw 4. On the bearing seat 9 The shaft hole of the shaft hole and the shaft hole of the bearing end cover 6 are provided with a sealing device 5, and an oil injection hole 11 is provided on the bearing end cover 6, which can introduce lubricating grease into the middle of the inner and outer rings of the bearing.

The end face of the shaft head 1 of the shaft end support device is a conical surface, and the axis of the tapered surface and the central screw hole of the end face is coaxial with the axis of the shaft head 1; the inner hole of the coaxial positioning support sleeve 3 and the outer The cylindrical surface is coaxial, the end surface of the end close to the bearing end cover 6 is plane and perpendicular to the axis, the end surface of the end close to the shaft head 1 is also a conical surface, the conical surface is coaxial with the outer cylindrical surface, the conical surface The cone angle matches the conical surface of the shaft head 1.

The center screw hole of the end surface of the shaft head 1 of the shaft end support device is matched with the connecting screw 4; the thread direction of the connecting screw 4 is determined according to the rotation direction of the shaft head 1, and the thread direction is driven by the shaft head 1 to connect the screw 4. When rotating, it can be determined by making it turn tighter and tighter.

The connecting screw 4 of the shaft end supporting device is an inner hexagon or an outer hexagon head.

The end surface of the shaft head 1 of any one of the shaft end support devices is a convex conical surface, and the end surface of the coaxial positioning support sleeve 3 close to the shaft head 1 is a concave conical surface; or the end surface of the shaft head 1 is a concave conical surface. On the surface, the end surface of the coaxial positioning support sleeve 3 close to the shaft head 1 is a convex conical surface. .

The cone angle of the end conical surface of the shaft head 1 of the aforesaid shaft end support device is different from the conical angle of the end conical surface of the coaxial positioning support sleeve 3, and the cone angle of the convex conical surface is larger than that of the concave conical surface. The cone angle of the face.

The conical surface of the end surface of the shaft head 1 and the conical surface of the coaxial positioning support sleeve 3 of the above-mentioned shaft end support device have the same cone angle, and the cone angle is 30° to 120°.

The technical scheme of the rubber roller husker with shaft end supporting device of the present invention is: a rubber roller husker, including a hopper, a feeding system, a fast roller system, a slow roller system, a loosening and closing control system, a driving system and a machine. Frame box 16, wherein the drive system includes a motor, a transmission belt and a set of pulleys 14 with different diameters, and the fast roller system includes a fast roller shaft 1a that can only rotate and a rubber roller 15 installed on the fast roller shaft , the slow roller system includes a slow roller shaft 1b that can rotate or swing around an auxiliary shaft 12 parallel to the fast roller shaft and a rubber roller 15 installed on the slow roller shaft, both rubber rollers are on the machine In the frame box 16, the drive system is arranged at one end of the frame box 16, and drives the fast roller shaft 1a and the slow roller shaft 1b to rotate at a differential speed, the fast roller shaft rotates faster than the slow roller shaft, and the fast roller shaft 1a passes through the The bearing set at one end of the drive system and the main support seat 13a are supported on the frame box 16, the slow roller shaft 1b is supported on the auxiliary shaft 12 through the bearing set near the end of the drive system and the main support seat 13b, and the auxiliary shaft 12 passes through a set of The sliding bearing is supported on the frame box 16, and the end of the frame box 16 near the shaft head 1 is equipped with a detachable side plate for replacing the rubber roller; Both ends are provided with the shaft end supporting device of the above invention. When replacing the rubber roller, you only need to remove the connecting screw 4 to separate the coaxial positioning support sleeve 3 from the shaft head 1. The shaft end support device can be disassembled together with the auxiliary support body 10; The tapered surface of the shaft head 1 is sleeved on the tapered surface of the shaft head 1, and the connecting screw 4 can be tightened. The supporting device is provided with a sealing device 5 at the bearing housing holes and the bearing end cover holes at both ends of the bearing, which can prevent dust from entering and prevent lubricating oil from leaking out.

The design principle of the shaft end support device of the present invention is that the cantilever end of the shaft is designed as a combined shaft end consisting of the shaft head on the cantilever shaft and the short shaft installed in the bearing, and the short shaft is connected with the shaft head with screws , The function of convenient disassembly and assembly is completed by the combined shaft end. The parts in contact with the bearing do not need to be disassembled when the supporting device is disassembled, so that the matching, sealing and lubrication methods of the bearing can be designed using conventional technology, which can ensure the coaxial positioning accuracy of the short shaft and the bearing and the service life of the bearing. Design the end face of the short shaft and the shaft head in contact with a conical surface, that is, design the short shaft as a coaxial positioning support sleeve, use the guiding and radial positioning functions of the conical surface, and act on the axial force generated by the tightening of the connecting screw Next, the short shaft and the shaft head are coaxially connected into one body, which can ensure the positioning accuracy of the short shaft and the shaft head, and finally realize the precise positioning of the shaft head and the bearing, reliable support, and convenient disassembly and assembly.

Referring to Figure 1, by tightening the axial force generated by the connecting screw 4, the conical surface of the shaft head 1 is closely connected with the conical surface of the coaxial positioning support sleeve 3, because the outer cylindrical surface and the tapered end surface of the coaxial positioning support sleeve 3 , the inner hole are coaxial, and the axis of the shaft head 1, the tapered end surface, and the screw hole on the end surface are also coaxial, and the coaxial positioning support sleeve 3 is precisely coaxial with the shaft head 1 under the centering action of the two cone faces Combined into one body, the coaxial positioning support sleeve 3 and the inner ring of the bearing adopt a conventional tight fit, so that the bearing 2, the coaxial positioning support sleeve 3, and the shaft head 1 are also coaxial, so that the shaft end can be accurately positioned and supported reliably. The coaxial positioning support sleeve 3 can be separated from the shaft head 1 by removing the connecting screw 4, and the shaft end support device can be disassembled together with the auxiliary support body 10; On the tapered surface of the head 1, the connecting screw 4 can be tightened to realize the convenient disassembly and assembly of the shaft end support device. There are sealing devices at the shaft holes of the bearing seat and the bearing end cover at both ends of the bearing, which can prevent dust and lubricating oil from leaking out, making the support device easy to maintain and long in service life.

The beneficial effects of the shaft end support device of the present invention are that the shaft end support device is convenient to disassemble and assemble, has a simple structure, accurate positioning of the shaft end support, reliable support, simple maintenance and long service life.

The invention has the beneficial effects of the rubber roller husker with the shaft end supporting device that the cantilever end shaft heads of the fast roller shaft and the slow roller shaft and the bearings of the supporting device can rotate coaxially, the supporting positioning is accurate and reliable, and the two glues are improved. The working stability of the roller overcomes the deformation of the shaft end of the fast roller and the slow roller, which causes the size and vibration of the rubber roller when it is working, which can improve the service life of the two rubber rollers, and it is convenient and fast to replace the rubber roller.

Description of drawings

Figure 1 is a schematic diagram of the structure of the shaft end support device;

Fig. 2 is the fast and slow roller shaft section development structure schematic diagram of the rubber roller huller with the supporting device;

In the figure: 1. Shaft head; 2. Bearing; 3. Coaxial positioning support sleeve; 4. Through connecting screw; 5. Sealing device; 6. Bearing end cover; 7. Screw; 8. Screw; 9. Bearing seat; 10. Auxiliary support body; 11. Oil injection hole; 12. Auxiliary shaft; 13a. Main support seat; 13b. Main support seat; 14. Pulley; 15. Rubber roller; 16. Rack box; 17. Arc adjustment plate; 1a, fast roller; 1b, slow roller;

Specific implementation methods :

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the shaft end support device of the present invention adopts the following technical scheme: it includes a shaft head 1, an auxiliary support body 10, a bearing seat 9, screws 7, 8, a bearing end cover 6, a bearing 2, and coaxial positioning Support sleeve 3, connecting screw 4 and sealing device 5; the auxiliary support body 10 is detachable and can be positioned relative to the main support seat at the other end of the shaft, the bearing seat 9 is fixed on the auxiliary support body 10 by screws 8, and the bearing 2 is installed In the bearing seat 9, the bearing end cover 6 is fixed on the bearing seat 9 by the screw 7, the outer ring of the bearing 2 matches the inner hole of the bearing seat 9, and the inner ring of the bearing 2 and the outer cylinder of the coaxial positioning support sleeve 3 The end surface of the shaft head 1 is a convex conical surface with a screw hole in the center, the end of the coaxial positioning support sleeve 3 in contact with the shaft head 1 is a concave conical surface, and the end face of the shaft head 1 is conical with the coaxial positioning The cone angle of the conical surface of the end surface of the support sleeve 3 is the same, and the coaxial positioning support sleeve 3 is connected to the end surface of the shaft head 1 coaxially through the connecting screw 4; the shaft hole of the bearing seat 9 and the shaft hole of the bearing end cover 6 The part is provided with a sealing device 5. The bearing 2 is sealed in the space formed by the bearing seat 9, the bearing end cover 6 and the coaxial positioning support sleeve 3. It is not necessary to separate the coaxial positioning support sleeve 3 from the bearing 2 when disassembling and assembling. Only the connecting screw 4 can be disassembled. The whole shaft end supporting device and the shaft head 1 are disassembled.

As shown in Figure 2, it is a schematic diagram of the fast and slow roller shaft section development structure of the rubber roller husker with the shaft end support device. The rubber roller husker with the shaft end support device of the present invention adopts the following technical scheme: it includes a hopper , feeding system, fast roller system, slow roller system, loosening and closing control system, drive system and frame box 16, wherein said drive system includes motor, transmission belt and a group of pulleys 14 with different diameters, and said fast roller The system includes a fast roller shaft 1a that can only rotate and a rubber roller 15 installed on the fast roller shaft. Roller shaft 1b and the rubber roller 15 that is installed on the slow roller shaft, two rubber rollers are all in the frame casing 16, and drive system is arranged on one end of frame casing 16, and drives fast roller shaft 1a and slow roller shaft 1b is opposite to the differential speed rotation, and the fast roller shaft rotates faster than the slow roller shaft. The fast roller shaft 1a is supported on the frame box 16 through the bearing group and the main support seat 13a near the end of the drive system, and the slow roller shaft 1b is passed through the drive system. The bearing set at one end and the main support seat 13b are supported on the auxiliary shaft 12, and the auxiliary shaft 12 is supported on the frame box 16 through a set of sliding bearings, and the end of the frame box 16 close to the shaft head 1 is installed with a replacement rubber roller. The detachable side plate; the characteristic is that the cantilever ends of the fast roller shaft 1a and the slow roller shaft 1b are provided with the shaft end supporting device of the above invention. When replacing the rubber roller, you only need to remove the connecting screw 4 to separate the coaxial positioning support sleeve 3 from the shaft head 1. The shaft end support device can be disassembled together with the auxiliary support body 10; The tapered surface of the shaft head 1 is sleeved on the tapered surface of the shaft head 1, and the connecting screw 4 can be tightened. The support device is provided with a sealing device 5 at the bearing seat holes and the bearing end cover holes at both ends of the bearing, which can prevent dust from entering and prevent lubricating oil from leaking out. The support device has reliable support, convenient disassembly and assembly, simple maintenance and long service life.

Claims (8)

1. A shaft end support device, including a shaft head (1), an auxiliary support body (10), a bearing seat (9), screws (7, 8), a bearing end cover (6), and a bearing (2), its characteristics It also includes coaxial positioning support sleeve (3), connecting screw (4) and sealing device (5); the auxiliary support body (10) is detachable, and the main support seat at the other end of the shaft head relative to the shaft can be directly or indirect positioning, the bearing seat (9) is fixed on the auxiliary support body (10) by the screw (8), the bearing (2) is installed in the bearing seat (9), and the bearing cover (6) is fixed on the auxiliary support body (10) by the screw (7) On the bearing seat (9), the outer ring of the bearing (2) matches the inner hole of the bearing seat (9), and the inner ring of the bearing (2) matches the outer cylindrical surface of the coaxial positioning support sleeve (3); the shaft head There is a screw hole in the center of the end face of (1), and one end of the coaxial positioning support sleeve (3) is matched with the end face of the shaft head (1), and the coaxial positioning support sleeve (3) is connected to the coaxial line by the connecting screw (4). On the end face of the shaft head (1), a sealing device (5) is provided on the shaft hole of the bearing seat (9) and the shaft hole of the bearing end cover (6), and an oil injection hole ( 11). 2. A shaft end support device according to claim 1, characterized in that the end surface of the shaft head (1) is a conical surface, and the conical surface, the axis of the central screw hole of the end surface and the axis of the shaft head (1) Coaxial; the inner hole of the coaxial positioning support sleeve (3) is coaxial with the outer cylindrical surface, the end surface of the end close to the bearing end cover (6) is plane and perpendicular to the axis, and the end surface close to the shaft head (1) The end surface is also a conical surface, the conical surface is coaxial with the outer cylindrical surface, and the cone angle of the conical surface matches the conical surface of the shaft head (1). 3. A shaft end support device according to claim 1 or 2, characterized in that the center screw hole on the end face of the shaft head (1) matches the connecting screw (4); the thread direction of the connecting screw (4) is based on The direction of rotation of the shaft head (1) is determined, and the thread direction is determined according to the fact that the shaft head (1) can drive the connecting screw (4) to rotate to make it turn tighter and tighter. 4. A shaft end support device according to claim 1 or 2, characterized in that the connecting screw (4) is an inner hexagon or an outer hexagon head. 5. Any shaft end support device according to claim 1 or 2, characterized in that the end surface of the shaft head (1) is a convex conical surface, and the coaxial positioning support sleeve (3) is close to the shaft head (1) The end surface of the shaft head (1) is a concave conical surface; or the end surface of the shaft head (1) is a concave conical surface, and the end surface of the coaxial positioning support sleeve (3) close to the shaft head (1) is a convex conical surface. 6. Any shaft end support device according to claim 1 or 2, characterized in that the cone angle of the conical surface of the end surface of the shaft head (1) is the same as the cone angle of the conical surface of the end surface of the coaxial positioning support sleeve (3). The angles are different in size, and the cone angle of the convex conical surface is larger than that of the concave conical surface. 7. Any shaft end support device according to claim 1 or 2, characterized in that the conical surface of the end surface of the shaft head (1) is the same as the cone angle of the conical surface of the coaxial positioning support sleeve (3) , and its cone angle is 30 degrees to 120 degrees. 8. A rubber roller husker comprises a hopper, a feeding system, a fast roller system, a slow roller system, a loosening and closing control system, a driving system and a frame casing (16), wherein the driving system comprises a motor, a transmission belt and a set of pulleys (14) with different diameters, the fast roller system includes a fast roller shaft (1a) that can only rotate and a rubber roller (15) installed on the fast roller shaft, and the slow roller system includes 1 slow roller shaft (1b) which can not only rotate but also swing around an auxiliary shaft (12) parallel to the fast roller shaft and the rubber roller (15) installed on the slow roller shaft, both rubber rollers are on the machine Inside the rack box (16), the driving system is arranged at one end of the rack box (16), and drives the fast roller shaft (1a) and the slow roller shaft (1b) to rotate at opposite speeds, and the fast roller shaft rotates faster than the slow roller shaft Fast, the fast roller shaft (1a) is supported on the frame box (16) through the bearing group near the end of the drive system and the main bearing seat (13a), and the slow roller shaft (1b) is supported on the frame box (16) through the bearing group near the end of the drive system and the main support seat (13a). The supporting seat (13b) is supported on the auxiliary shaft (12), and the auxiliary shaft (12) is supported on the frame box (16) through a set of sliding bearings, and the end of the frame box (16) close to the shaft head (1) A detachable side plate for replacing the rubber roller is installed; it is characterized in that the cantilever ends of the fast roller shaft (1a) and the slow roller shaft (1b) are provided with shaft end supports as described in any one of claims 1 to 7 device.