Deviation rectifying bearing dustproof sleeve

Abstract

The utility model discloses a deviation rectifying bearing dustproof sleeve which comprises two outer shell sleeves connected through a supporting frame, a bearing arranged on a transmission wheel shaft in a sleeved mode and an end cover detachably connected with the outer shell sleeves and arranged on the transmission wheel shaft in a sleeved mode are arranged in each outer shell sleeve. The shell sleeve and the end cover are encircled and form a cavity structure together with the outer side wall of the transmission wheel shaft; and a sealing ring group which is positioned on the outer side of the bearing and sleeves the transmission wheel shaft is attached in the cavity structure. According to the utility model, the supporting frame is arranged, so that the conveying offset caused by abrasion between the deviation rectifying bearings on the two adjacent transmission wheels is effectively restricted and reduced; the sealing ring set is arranged in the cavity structure defined by the clamping spring limiting bearing, the shell sleeve and the end cover in an attached mode, sealing of the outer side of the bearing is achieved through the sealing ring set, disassembly and assembly are convenient, medicine powder can be effectively prevented from entering, and the offset in the conveying direction of the crawler belt is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dustproofing of transmission parts, in particular to a dustproof sleeve of a deviation-correcting bearing. Background Art

[0002] When pharmaceutical factories use vacuum belt dryers, powder is easily introduced into the correcting rolling bearings of the vacuum belt dryers during operation. The original sealing sleeves only provide a temporary seal, and with the wear and aging of the sealing sleeves and the loss of the correcting bearings, they cannot maintain a closed state for a long time. The continuous accumulation of powder will cause the correcting bearings to be stuck, and the force on the conveyor tracks will increase, shortening their service life. At the same time, it will also affect the left and right correction sensitivity, easily causing the track deviation alarm, which will directly affect normal production efficiency. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a deviation-correcting bearing dust cover which is easy to assemble and can ensure a durable seal.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a correction bearing dust cover, including two outer shells connected by a support frame, each of the outer shells is provided with a bearing sleeved on the transmission wheel shaft and an end cover detachably connected to the outer shell and sleeved on the transmission wheel shaft, the outer shell and the end cover are combined to form a cavity structure with the outer side wall of the transmission wheel shaft, and a sealing ring group located on the outside of the bearing and sleeved on the transmission wheel shaft is fitted in the cavity structure.

[0005] The above structure is adopted and two outer shells are provided to facilitate connecting two adjacent transmission wheels into a whole during installation. In the event of unilateral wear of the correction bearing, the connection function of the support frame assists in correction, thereby reducing the offset of the track and extending its service life; each outer shell and end cover are then used to surround the outer side of the bearing on each transmission wheel and form a cavity structure, and a sealing ring group is also provided on the outer side of each bearing, and the sealing ring is used to fully seal the bearing, effectively preventing the entry and accumulation of powder.

[0006] In order to simplify the structure and facilitate production, preferably, the support frame includes a first strut and a second strut connected between the two outer shells, the two struts are arranged parallel to each other, and the plane where the center line of the first strut is located is higher than the plane where the center line of the second strut is located.

[0007] In order to ensure the installation and positioning of the bearing, preferably, a groove is provided on the outer wall of the transmission shaft at the position corresponding to the bearing, and a retaining spring is embedded in the groove, and the inner end face of the retaining spring abuts against the end face of the corresponding end of the bearing.

[0008] In order to ensure that the first sealing ring is installed in place and limit the offset during use, it is preferred that the sealing ring group includes a first sealing ring and a second sealing ring which are arranged at the left and right ends of the bearing and are both sleeved on the transmission wheel shaft. A clearance groove is provided on one side of the first sealing ring at the position corresponding to the retaining spring, and the groove wall of the clearance groove is in contact with the outer side wall of the retaining spring, and the groove bottom of the clearance groove is in contact with the outer end face of the retaining spring.

[0009] In order to reduce the wear and displacement of the first sealing ring, it is preferred that a first boss is provided on the other side of the first sealing ring, and a placement groove is provided on the end cover at a position corresponding to the first boss. When the outer shell is connected to the end cover, the first boss extends into the placement groove, the outer side wall of the first boss fits against the groove wall of the placement groove, and the outer end face of the first boss abuts against the groove bottom of the placement groove.

[0010] In order to reduce the rotational wear of the bearing, preferably, a graphite sleeve mounted on the transmission wheel shaft is provided between the second sealing ring and the bearing, the outer wall of one end of the graphite sleeve abuts the inner wall of the second sealing ring, and the outer wall of the other end of the graphite sleeve abuts the outer wall of the bearing.

[0011] In order to reduce the wear and displacement of the second sealing ring, preferably, a second boss which is sleeved on the transmission wheel shaft is further provided on the second sealing ring, a baffle is provided on one side of the outer shell, a through hole is provided at a position on the baffle corresponding to the second boss, the second boss extends into the through hole, the outer side wall of the second sealing ring is in contact with the inner side wall of the baffle, and the hole wall of the through hole is in contact with the outer side wall of the second boss.

[0012] In order to reduce the wear of the sealing ring, preferably, sealing water lines are provided on the outer side walls of the first sealing ring and the second sealing ring.

[0013] In order to facilitate disassembly and assembly, preferably, a connecting bolt is provided on the end cover, and a threaded hole is provided on the outer shell at a position corresponding to the connecting bolt. The connecting bolt is screwed to the threaded hole to fix the end cover on the outer shell.

[0014] Beneficial effects: The utility model is provided with a support frame, which effectively restricts and reduces the transmission offset caused by wear between the correction bearings on two adjacent transmission wheels; a retaining spring limit bearing is provided, and a sealing ring group is fitted in the cavity structure formed by the outer shell and the end cover, and the sealing ring group realizes the sealing of the outside of the bearing, which is not only convenient for disassembly and assembly, but also can effectively prevent the entry of powder, thereby greatly reducing the offset in the transmission direction of the crawler track. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the installation structure of the utility model.

[0017] Figure 2 Schematic diagram of the installation structure of the outer shell and the end cover.

[0018] The meanings of the reference numerals in the accompanying drawings are:

[0019] Drive shaft-1; bearing-10; slot-11; retaining spring-110;

[0020] Outer shell-2; end cover-20; first support rod-21; second support rod-22; connecting bolt-23;

[0021] First sealing ring 31; clearance groove 310; first boss 311; placement groove 312; second sealing ring 32; second boss 321; graphite sleeve 33;

[0022] Baffle - 4; Through hole - 40. DETAILED DESCRIPTION

[0023] like Figure 1 and Figure 2 As shown, the utility model includes two outer shells 2 connected by a support frame, and each of the outer shells 2 is provided with a bearing 10 sleeved on the transmission shaft 1 and an end cover 20 detachably connected to the outer shell 2 and sleeved on the transmission shaft 1. The outer shell 2 and the end cover 20 are surrounded and together with the outer side wall of the transmission shaft 1 form a cavity structure, and a sealing ring group located on the outside of the bearing 10 and sleeved on the transmission shaft 1 is fitted in the cavity structure.

[0024] Specifically, the support frame includes a first support rod 21 and a second support rod 22 connected between the two outer shells 2. The two support rods are arranged parallel to each other, and the plane where the center line of the first support rod 21 is located is higher than the plane where the center line of the second support rod 22 is located.

[0025] A slot 11 is provided on the outer wall of the transmission shaft 1 at a position corresponding to the bearing 10 , and a retaining spring 110 is embedded in the slot 11 . The inner end surface of the retaining spring 110 abuts against the end surface corresponding to the end of the bearing 10 .

[0026] The sealing ring group includes a first sealing ring 31 and a second sealing ring 32 which are arranged at the left and right ends of the bearing 10 and are both sleeved on the transmission wheel shaft 1. Sealing water lines (not marked) are provided on the outer walls of the first sealing ring 31 and the second sealing ring 32.

[0027] A clearance groove 310 is provided on one side of the first sealing ring 31 at a position corresponding to the retaining spring 110, and the groove wall of the clearance groove 310 is in contact with the outer side wall of the retaining spring 110, and the groove bottom of the clearance groove 310 is in contact with the outer end face of the retaining spring 110; a first boss 311 is provided on the other side of the first sealing ring 31, and a placement groove 312 is provided on the end cover 20 at a position corresponding to the first boss 311. When the outer shell sleeve 2 is connected to the end cover 20, the first boss 311 extends into the placement groove 312, the outer side wall of the first boss 311 is in contact with the groove wall of the placement groove 312, and the outer end face of the first boss 311 is in contact with the groove bottom of the placement groove 312.

[0028] A graphite sleeve 33 sleeved on the transmission wheel shaft 1 is provided between the second sealing ring 32 and the bearing 10, and the outer wall of one end of the graphite sleeve 33 abuts the inner wall of the second sealing ring 32, and the outer wall of the other end of the graphite sleeve 33 abuts the outer wall of the bearing 10; a second boss 321 sleeved on the transmission wheel shaft 1 is also provided on the second sealing ring 32, and a baffle 4 is provided on one side of the outer shell 2. A through hole 40 is provided on the baffle 4 at a position corresponding to the second boss 321, and the second boss 321 extends into the through hole 40, and the outer wall of the second sealing ring 32 is in contact with the inner wall of the baffle 4, and the hole wall of the through hole 40 is in contact with the outer wall of the second boss 321.

[0029] A connecting bolt 23 is passed through the end cover 20 , and a threaded hole is provided on the outer shell 2 at a position corresponding to the connecting bolt 23 . The connecting bolt 23 is screwed into the threaded hole to fix the end cover 20 on the outer shell 2 .

[0030] The operating principle of this utility model is as follows:

[0031] like Figures 1 to 2 As shown, before use, a retaining spring 110 is first embedded in the retaining groove 11 on the transmission shaft 1, and then the bearing 10 is sleeved on one side of the transmission shaft 1. At the same time, the outer side of the other side of the transmission shaft 1 is sleeved with the first sealing ring 31, and the inner end face of the retaining spring 110 is abutted against the end face of the corresponding end of the bearing 10, and the groove wall of the clearance groove 310 is fitted and abutted against the outer side wall of the retaining spring 110, and the groove bottom of the clearance groove 310 is abutted against the outer end face of the retaining spring 110, so as to realize the assembly positioning of the bearing 10 and the first sealing ring 31.

[0032] Next, a graphite sleeve 33 and a second sealing ring 32 are sleeved on the side of the transmission shaft 1 corresponding to the bearing 10, and the outer wall of one end of the graphite sleeve 33 abuts against the inner wall of the second sealing ring 32, and the outer wall of the other end of the graphite sleeve 33 abuts against the outer wall of the bearing 10.

[0033] Finally, the outer shell 2 is put on one side of the second sealing ring 32, and the second boss 321 is extended into the through hole 40, the outer wall of the second sealing ring 32 is in contact with the inner wall of the baffle 4, and the hole wall of the through hole 40 is in contact with the outer wall of the second boss 321; then the end cover 20 and the outer shell 2 are screwed together and fixed by the connecting bolts 23.

[0034] In this way, in the cavity structure formed by the outer shell 2, the end cover 20 and the outer side wall of the transmission wheel shaft 1, the bearing 10, the graphite sleeve 33 and the two sealing rings are tightly fitted. At the same time, the outer shell 2 and the end cover 20 are also tightly fitted with the built-in components, which can effectively prevent the entry of powder and the formation of residual accumulation.

[0035] After use, the transmission wheel shaft 1 and the bearing 10 will be worn. Since the materials on the conveyor belt of the vacuum belt dryer are not placed evenly, the wear between each transmission wheel shaft 1 and the bearing 10 is also inconsistent. Under the condition that the retaining spring 110 limits the bearing 10 to move toward the first sealing ring 31, the wear of the bearing 10 can only be the displacement of the second sealing ring 31 toward the first sealing ring 31. However, under the lubrication of the graphite sleeve 33, the wear of the second sealing ring 32 is relatively small, which effectively reduces the amount of wear during use. In the later stage of use, when a large installation gap is formed due to wear, since the first support rod 21 and the second support rod 22 are arranged in parallel between the two adjacent outer shells 2, and the plane where the center line of the first support rod 21 is located is higher than the plane where the center line of the second support rod 22 is located, due to inconsistent wear conditions, the offset of the position with a large gap in the transmission direction cannot drive the position with a small gap to form an offset, thereby controlling the trend of the transmission offset becoming larger and continuing to ensure the stability of the transmission direction.

[0036] like Figure 2 As shown, when a significant gap is formed due to wear between the first sealing ring 31 and the bearing 10, since the retaining spring 110 and the bearing 10 continue to maintain an abutment state, and since there is no relative wear between the outer wall of the retaining spring 110 and the first sealing ring 31, the powder cannot enter the bearing 10 from the position between the first sealing ring 31 and the bearing 10; and at the position of the second sealing ring 32, there is a lubricating effect of the graphite sleeve 33, the wear is smaller, and the powder is less likely to enter the bearing 10 from the graphite sleeve 33, which greatly increases the service life and effectively extends the stability of the use cycle.

[0037] Among them, the compression effect of the provided sealing water lines during installation and use can cause the sealing surface at the abutment position to deform, thereby generating pressure around the sealing surface to achieve a better sealing effect.

Claims

1. A dust cover for a correction bearing, characterized by: The invention comprises two outer shells (2) connected by a support frame, wherein a bearing (10) sleeved on a transmission shaft (1) and an end cover (20) detachably connected to the outer shell (2) and sleeved on the transmission shaft (1) are provided in each outer shell (2), wherein the outer shell (2) and the end cover (20) are enclosed and together with the outer side wall of the transmission shaft (1) form a cavity structure, wherein a sealing ring group located outside the bearing (10) and sleeved on the transmission shaft (1) is fitted in the cavity structure.

2. The dust cover of the correction bearing according to claim 1, characterized in that: The support frame comprises a first support rod (21) and a second support rod (22) connected and arranged between two outer shells (2), the two support rods being arranged parallel to each other, and the plane where the center line of the first support rod (21) is located is higher than the plane where the center line of the second support rod (22) is located.

3. The dust cover of the correction bearing according to claim 1, characterized in that: A clamping groove (11) is provided on the outer wall of the transmission wheel shaft (1) at a position corresponding to the bearing (10), a clamping spring (110) is embedded in the clamping groove (11), and an inner end surface of the clamping spring (110) abuts against an end surface corresponding to the end of the bearing (10).

4. The dust cover of the correction bearing according to claim 3, characterized in that: The sealing ring group comprises a first sealing ring (31) and a second sealing ring (32) which are arranged at the left and right ends of the bearing (10) and are both sleeved on the transmission wheel shaft (1); a clearance groove (310) is provided on one side of the first sealing ring (31) at a position corresponding to the retaining spring (110); the groove wall of the clearance groove (310) is in contact with the outer side wall of the retaining spring (110), and the groove bottom of the clearance groove (310) is in contact with the outer end surface of the retaining spring (110).

5. The dust cover of the correction bearing according to claim 4, characterized in that: A first boss (311) is provided on the other side of the first sealing ring (31), and a placement groove (312) is provided on the end cover (20) at a position corresponding to the first boss (311). When the outer shell (2) is connected to the end cover (20), the first boss (311) extends into the placement groove (312), the outer side wall of the first boss (311) fits with the groove wall of the placement groove (312), and the outer end surface of the first boss (311) abuts against the groove bottom of the placement groove (312).

6. The dust cover of the correction bearing according to claim 4, characterized in that: A graphite sleeve (33) sleeved on the transmission wheel shaft (1) is provided between the second sealing ring (32) and the bearing (10), wherein the outer wall of one end of the graphite sleeve (33) abuts against the inner wall of the second sealing ring (32), and the outer wall of the other end of the graphite sleeve (33) abuts against the outer wall of the bearing (10).

7. The dust cover of the correction bearing according to claim 6, characterized in that: A second boss (321) sleeved on the transmission wheel shaft (1) is further provided on the second sealing ring (32). A baffle (4) is provided on one side of the outer shell (2). A through hole (40) is provided on the baffle (4) at a position corresponding to the second boss (321). The second boss (321) extends into the through hole (40). The outer wall of the second sealing ring (32) is in contact with the inner wall of the baffle (4), and the hole wall of the through hole (40) is in contact with the outer wall of the second boss (321).

8. The dust cover of the correction bearing according to claim 4, characterized in that: Sealing water lines are provided on the outer side walls of the first sealing ring (31) and the second sealing ring (32).

9. The dust cover of the correction bearing according to claim 1, characterized in that: A connecting bolt (23) is provided on the end cover (20), and a threaded hole is provided on the outer shell (2) at a position corresponding to the connecting bolt (23). The connecting bolt (23) is screwed to the threaded hole to fix the end cover (20) to the outer shell (2).

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