Carrier gear for compact spinning device and assembly of carrier gear
By designing the involute bridge gear, increasing the tooth slot tolerance area, and adopting a labyrinth seal structure, the spinning quality problems caused by the bridge gear accumulation and early bearing wear are solved, achieving higher quality. Spinning production and longer maintenance intervals.
Patent Information
- Application Number
- CN202420541798.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The bridge gears on existing ring spinning machines are trapped due to the adhesion of short velvets in the air, causing the front roller to jump, affecting the spinning quality, and the bearings are easily absorbed by short velvets, causing lag, early wear, and increased maintenance costs. .
Design an involute bridge gear. Its tooth groove has an arc surface or plane tangent to the involute line, and transitions to the tooth root bottom surface through the tooth root fillet, increasing the tooth top clearance and tooth side clearance, thus increasing the tooth tip clearance and tooth side clearance. Large flower area. At the same time, a labyrinth seal structure is used to form bent sealing channels on both sides of the bearing, extending the path for flying particles to enter the bearing and preventing bearing grease from being sucked dry.
By increasing the cogging capacity of the bridge gear, the front roller beat caused by accumulated flowers is reduced, the spinning quality is improved, the maintenance cycle is extended, the production cost is reduced, and the service life of the bearing is extended.
Smart Images
Figure CN222374859U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bridge gear and components used in a compact spinning device, belonging to the technical field of compact spinning of a ring spinning frame. Background Art
[0002] A fiber coagulation zone is added before the traction device of the ring spinning machine, which basically eliminates the spinning twisting triangle area between the front roller and the twisting point. The fiber strands are stretched and twisted by the rear roller, middle roller and front roller in the traction zone, and then output from the front mouth of the front roller. The strands move on the mesh ring and gather and rotate through the airflow guide groove of the special-shaped negative pressure tube under the contraction and polymerization of the airflow, gradually turning from a flat belt to a cylinder. The ends of the fibers are twisted into the yarn, so the yarn is very compact, the yarn appearance is smooth and has less hairiness.
[0003] The gear on the front roller on the ring spinning machine meshes with the gear on the gathering lower roller on the gathering spinning device through the bridge gear, and the front roller is connected to the corresponding motor. The power is transmitted to the gathering lower roller of the gathering spinning device through the front roller and the bridge gear, and drives the grid circle to rotate during the rotation of the gathering lower roller. After the fiber strands are twisted between the front leather roller and the front roller, the fiber strands are gathered by the negative pressure airflow in the special-shaped negative pressure tube, and twisted so that their hairiness can be sealed and wrapped around the yarn.
[0004] The bridge gear is installed on a roller seat through the bridge shaft, the two sides of the front roller are installed on two roller seats, and the two ends of the gathering lower roller and the special-shaped tube are installed on the corresponding roller seats. During the spinning process, the front roller gear, bridge gear and gathering lower roller gear on the front roller are all exposed to the outside. The air in the cotton spinning workshop contains a lot of short fluff. During the transmission of gear power, the flying flowers in the air are easy to adhere to the corresponding gears, so the accumulation of flowers in the tooth grooves of each gear is inevitable. Since the number of teeth and diameter of the bridge gear are larger than the number of teeth and diameter of the front roller gear and the upper gear of the gathering lower roller, the tooth gap between the front roller tooth top and the tooth groove of the bridge gear is small, especially the tooth root fillet of the bridge gear is set at the center of the groove bottom, and the space for accommodating the accumulated flowers is limited. Therefore, after the tooth groove is full of accumulated flowers, it is easy to compact the accumulated flowers in the tooth groove. The front roller is a long-axis structure. Even if the accumulated flowers are frequently cleaned, if there are more accumulated flowers in one of the tooth grooves, it will cause the front roller to jump and generate mechanical waves, which will then affect the yarn dryness of the twisted yarn and even produce rubber yarn, seriously affecting the quality of the finished yarn. In addition, the bridge gear is installed on the bridge shaft through the bearing. The bearing of the bridge gear is usually a ball bearing, which is directly exposed to the outside through both sides of the bearing. The short fluff in the air can easily enter the bearing and absorb the grease in the bearing, which can easily cause the bearing to jam. Not only does it cause the bridge gear to wear early and affect the spinning quality, but it also increases the bearing damage phenomenon, increasing the maintenance cost and workload. Summary of the invention
[0005] The utility model aims to provide a bridge gear and its components for a concentrated spinning device, which can increase the tooth space capacity of the bridge gear, reduce the influence of the front roller beating caused by the accumulation of tooth space on the spinning quality, prolong the maintenance time and reduce the production cost.
[0006] The utility model provides a technical solution for achieving the above-mentioned purpose: a bridge gear for a gathering spinning device, wherein the bridge gear is meshed with the front roller gear on the front roller and the gathering lower roller gear on the gathering lower roller, and the bridge gear comprises an involute bridge tooth and a bridge tooth groove, and is characterized in that: when the bridge tooth and the front roller tooth groove are connected at the pitch circle, the tooth gap h1 between the tooth root bottom surface of the adjacent bridge tooth groove and the highest point of the tooth top surface of the corresponding front roller tooth is between 0.40±0.05mm, and the bridge tooth groove has an arc surface or a plane tangent to the involute, and transitions to the tooth root bottom surface through the tooth root fillet R on both sides, and the width b of the two tooth root fillets R of the bridge tooth groove is between 1.10±0.05mm.
[0007] Another technical solution for achieving the above-mentioned purpose of the utility model is: a bridge gear assembly for a concentrated spinning device, characterized in that it includes a bridge gear, a bridge shaft, a bearing and a sealing mechanism, the bearing is installed on the bearing seat of the bridge gear and the bridge shaft; the sealing mechanism includes a first baffle, a second baffle, an inner shield and a gear shield, the inner shield is sleeved on the bridge shaft and sealed on the connecting part of the bridge gear, the first baffle installed on the bridge shaft is respectively connected to the inner ring on the inner side of the bearing and the shoulder of the bridge shaft, and the inner shield and the first baffle form an inner labyrinth seal; the gear shield is installed on the end face of the bridge shaft through a fastener, the second baffle installed on the bridge shaft is located on the outer side of the bearing, the end plate of the gear shield passes through the orifice of the outer baffle ring and is pressed against the inner ring on the outer side of the bearing through the second baffle, and the outer baffle ring of the bridge gear and the second baffle form an outer labyrinth seal.
[0008] The utility model improves the bridge gear, and under the premise of not changing the center distance between the bridge gear and the front roller and the transmission ratio, increases the tooth gap h1 between the tooth root bottom surface of the bridge tooth groove and the highest point of the tooth top surface of the corresponding front roller tooth, and at the same time, the bridge tooth groove is transitioned to the tooth root bottom surface through the arc surface or plane tangent to the involute on both sides of the tooth groove and the tooth root fillet R, which can not only increase the tooth top gap, but also increase the tooth side gap close to the tooth root side, so as to increase the flower-accommodating area between the tooth groove of the bridge gear and the tooth top of the front roller gear and the tooth groove of the bridge gear on both sides, which can reduce the impact of the front roller's jumping caused by flower accumulation on the spinning quality, solve the problem of rubber yarn, and improve the quality of the finished spinning product. The utility model solves the problem that the flower accumulation is easy to be compacted and difficult to clean up during the gear power transmission process by improving the bridge gear, especially increasing the tooth groove width and the tooth side gap. Due to the increased flower-accommodating capacity, the utility model can extend the flower cleaning and maintenance time, and greatly reduce the maintenance workload.
[0009] The utility model bridge gear assembly is provided with a first baffle and a second baffle on both sides of the bearing, respectively, an inner shield is sleeved on the bridge shaft and sealed on the connecting portion of the bridge gear, the inner shield and the first baffle form an inner labyrinth seal, and at the same time, an outer baffle ring which is integrated with the shoulder of the bearing seat is provided on the outer side of the bridge gear, the orifice size of the outer baffle ring is reduced, so that the outer baffle ring of the bridge gear and the second baffle form an outer labyrinth seal, so that the bent sealing channel formed on both sides of the bearing can extend the path for the flying flowers to enter the bearing in a limited space, and the sealing effect is good. The utility model bridge gear assembly can form a labyrinth seal on both sides of the bearing, so that less flying flowers enter the bearing, keep the grease of the bearing from being sucked dry, and greatly improve the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.
[0011] Figure 1 The utility model is a structural schematic diagram in which the bridge gear is installed on the roller seat.
[0012] Figure 2 It is a schematic diagram of the meshing structure of the bridge gear of the utility model.
[0013] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at location I.
[0014] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure at II.
[0015] Figure 5 It is one of the structural schematic diagrams of the bridge gear assembly of the utility model.
[0016] Figure 6 This is the second structural schematic diagram of the bridge gear assembly of the utility model.
[0017] Among them: 1—front roller, 1-1—front roller gear, 1-11—front roller tooth, 1-12—front roller tooth groove, 2—bridge gear, 2-1—bridge tooth, 2-2—bridge tooth groove, 2-3—arc surface, 2-4—outer retaining ring, 2-5—bearing seat, 2-6—inner stopper, 2-7—annular notch, 3—gathering lower roller, 3-1—gathering lower roller gear, 3-11—gathering lower roller tooth, 4—roller seat, 5—bridge shaft, 5-1—shoulder, 6—inner shield, 7—first baffle, 8—bearing, 9—second baffle, 10—gear shield, 10-1—end plate, 11—gasket, 12—fastener. DETAILED DESCRIPTION
[0018] See Figures 1 to 4 As shown, the utility model is a bridge gear for a compact spinning device, the bridge gear 2 is meshed with the front roller gear 1-1 on the front roller 1 and the compacting lower roller gear 3-1 on the compacting lower roller 3, the bridge gear 2 includes an involute bridge tooth 2-1 and a bridge tooth groove 2-2, the front roller gear 1-1 on the front roller 1 drives the compacting lower roller gear 3-1 on the compacting lower roller 3 to rotate through the bridge gear 2. Figure 2 As shown, the center distance between the bridge gear 2 and the front roller gear 1-1 of the utility model is a1, and the center distance between the bridge gear 2 and the gathering lower roller gear 3-1 is a2, so there is no need to change the existing ring spinning frame structure.
[0019] See Figure 2 , 3As shown, when the bridge tooth 2-1 of the utility model is connected with the front roller tooth groove 1-12 at the pitch circle, the tooth gap h1 between the root bottom surface of the adjacent bridge tooth groove 2-2 and the highest point of the tooth top surface of the corresponding front roller tooth 1-11 is between 0.40±0.05mm, such as the tooth gap h1 between the root bottom surface of the bridge tooth groove 2-2 and the highest point of the tooth top surface of the corresponding front roller tooth 1-11 is 0.35mm, 0.40mm, 0.45mm, etc., so the tooth top gap can be increased. The bridge tooth groove 2-2 has an arc surface 2-3 or a plane tangent to the involute, and transitions to the root bottom surface through the root fillet R on both sides, thereby increasing the space at the bottom of the bridge tooth groove 2-2. The width b of the bridge tooth groove 2-2 at the two root fillets R is between 1.10±0.05mm, increasing the root width of the bridge tooth groove 2-2, and increasing the flower area c.
[0020] See Figure 2 , 4 As shown, when the bridge tooth groove 2-2 of the utility model is connected with the gathering lower roller tooth 3-11 at the pitch circle, the tooth gap h2 between the tooth top of the gathering lower roller tooth 3-11 and the tooth root bottom of the bridge tooth groove 2-2 is between 0.40±0.05mm. If the tooth gap h2 is 0.35mm, 0.4 or 0.45mm, the gap between the tooth top of the bridge tooth groove 2-2 and the gathering lower roller tooth 3-11 is also increased. In addition, the tooth side gap is increased, which increases the flower area e, and can reduce the problem of grid ring jamming caused by flower accumulation in the tooth groove.
[0021] See Figure 2 As shown, the root fillet R of the new bridge tooth groove 2-2 is between 0.20±0.05mm, and the tooth height h of the bridge tooth 2-1 is 2.15±0.05mm.
[0022] Table 1 shows that when the number of teeth of the front roller gear is 25 and the module is 1, and the number of teeth of the clustered lower roller gear is 18 and the module is 1, the three different parameters of the bridge gears of the utility model are compared with the existing bridge gear parameters, the flower area C is 1.75 to 2.31 times the original, and the flower area C is 1.74 to 2.26 times the original.
[0023] Table 1
[0024] project Original bridge gear Bridge gear 1 Bridge gear 2 Bridge gear 3 Modulus 1 1 1 1 Number of teeth 40 40 40 40 Center distance a1 (mm) 32.5 32.5 32.5 32.5 Center distance a2 (mm) 29 29 29 29 Tooth tip circle da (mm) 41.5 41.5 41.5 41.5 Pitch circle d (mm) 40 40 40 40 Tooth clearance h1 (mm) 0.25 0.35 0.4 0.45 Tooth root fillet R (mm) 0.38 0.15 0.2 0.25 Width b (mm) 0.85 1.05 1.1 1.15 Tooth height h (mm) 2 2.1 2.15 2.2 <![CDATA[Flower - holding area c (mm 2 ).]]> 0.24 0.42 0.487 0.555 Tooth clearance h2 (mm) 0.25 0.35 0.4 0.45 <![CDATA[Flower holding area e (mm 2 ).]]> 0.25 0.435 0.498 0.566
[0025] Table 2 shows that when the number of teeth of the front roller gear is 27 and the module is 1, and the number of teeth of the clustered lower roller gear is 19 and the module is 1, the three different parameters of the bridge gears of the utility model are compared with the existing bridge gear parameters, the flower area C is 1.75 to 2.31 times the original, and the flower area C is 1.74 to 2.08 times the original.
[0026] Table 2
[0027] project Original bridge gear Bridge gear 1 Bridge gear 2 Bridge gear 3 Modulus 1 1 1 1 Number of teeth 40 40 40 40 Center distance a1 (mm) 33.5 33.5 33.5 33.5 Center distance a2 (mm) 29.5 29.5 29.5 29.5 Tooth tip circle da (mm) 41.5 41.5 41.5 41.5 Pitch circle d (mm) 40 40 40 40 Tooth clearance h1 (mm) 0.25 0.35 0.4 0.45 Tooth root fillet R (mm) 0.38 0.15 0.2 0.25 Width b (mm) 0.85 1.05 1.1 1.15 Tooth height h (mm) 2 2.1 2.15 2.2 <![CDATA[Flower-containing area c (mm 2 ).]]> 0.24 0.42 0.487 0.555 Tooth clearance h2 (mm) 0.25 0.35 0.4 0.45 <![CDATA[Flower holding area e (mm 2 ).]]> 0.25 0.435 0.48 0.52
[0028] Table 3 shows that when the number of teeth of the front roller gear is 23 and the module is 1, and the number of teeth of the clustered lower roller gear is 18 and the module is 1, the three different parameters of the bridge gears of the utility model are compared with the existing bridge gear parameters, the flower area C is 1.75 to 2.31 times the original, and the flower area C is 1.74 to 2.26 times the original.
[0029] Table 3
[0030] project Original bridge gear Bridge gear 1 Bridge gear 2 Bridge gear 3 Modulus 1 1 1 1 Number of teeth 40 40 40 40 Center distance a1 (mm) 31.5 31.5 31.5 31.5 Center distance a2 (mm) 29 29 29 29 Tooth tip circle da (mm) 41.5 41.5 41.5 41.5 Pitch circle d (mm) 40 40 40 40 Tooth clearance h1 (mm) 0.25 0.35 0.4 0.45 Tooth root fillet R (mm) 0.38 0.15 0.2 0.25 Width b (mm) 0.85 1.05 1.1 1.15 Tooth height h (mm) 2 2.1 2.15 2.2 <![CDATA[Flower-containing area c (mm 2 ).]]> 0.24 0.42 0.487 0.555 Tooth clearance h2 (mm) 0.25 0.35 0.4 0.45 <![CDATA[Flower-containing area e (mm 2 )]]> 0.25 0.435 0.498 0.566
[0031] Table 4 shows that when the number of teeth of the front roller gear is 25 and the module is 1, and the number of teeth of the clustered lower roller gear is 19 and the module is 1, the three different parameters of the bridge gears of the utility model are compared with the existing bridge gear parameters, the flower area C is 1.75 to 2.26 times the original, and the flower area C is 1.74 to 2.26 times the original.
[0032] Table 4
[0033] project Original bridge gear Bridge gear 1 Bridge gear 2 Bridge gear 3 Modulus 1 1 1 1 Number of teeth 40 40 40 40 Center distance a1 (mm) 32.5 32.5 32.5 32.5 Center distance a2 (mm) 29.5 29.5 29.5 29.5 Tooth tip circle da (mm) 41.5 41.5 41.5 41.5 Pitch circle d (mm) 40 40 40 40 Tooth clearance h1 (mm) 0.25 0.35 0.4 0.45 Tooth root fillet R (mm) 0.38 0.15 0.2 0.25 Width b (mm) 0.85 1.05 1.1 1.15 Tooth height h (mm) 2 2.1 2.15 2.2 <![CDATA[Flower-containing area c (mm 2 )]]> 0.24 0.42 0.487 0.555 Tooth clearance h2 (mm) 0.25 0.35 0.4 0.45 <![CDATA[Flower-containing area e (mm 2 ).]]> 0.25 0.435 0.498 0.566
[0034] See Figure 5 , 6 As shown, the bridge gear 2 of the utility model is provided with a bearing seat 2-5 with a shoulder at the inner hole, and the bridge gear 2 is provided with a connecting portion for installing the inner cover shell on one side of the roller seat 4, and an outer retaining ring 2-4 which is integrated with the shoulder is provided on the outside. Therefore, a labyrinth seal for the bearing 8 can be formed by installing the inner cover shell and the integrated outer retaining ring 2-4 as well as the first retaining plate and the second connecting plate.
[0035] See Figure 5 As shown, the connecting portion of the bridge gear 2 of the utility model is a ring-shaped inner stop 2-6, or as shown in FIG. Figure 6 As shown, the connecting portion of the bridge gear 2 is an annular notch 2 - 7 , and a limiting groove or a limiting convex ring is provided on the connecting portion for limiting, so as to facilitate the installation of the inner shield 6 and reliably connect it to the bridge gear 2 .
[0036] See Figure 5 , 6 As shown, the utility model is used for a bridge gear assembly of a concentrated spinning device, including a bridge gear 2, a bridge shaft 5, a bearing 8 and a sealing mechanism. The bearing 8 is installed on the bearing seat 2-5 of the bridge gear 2 and the bridge shaft 5, and the outer ring of the bearing 8 is against the shoulder so that the bridge gear 2 can rotate freely. One side of the bridge shaft 5 passes through the mounting hole of the roller seat 4 and is fixed with a nut.
[0037] See Figure 5 , 6As shown, the sealing mechanism of the utility model includes a first baffle 7, a second baffle 9, an inner shield 6 and a gear shield 10. The inner shield 6 is sleeved on the bridge shaft 5 and sealed on the connecting portion of the bridge gear 2. The first baffle 7 installed on the bridge shaft 5 is respectively connected to the inner ring of the inner side of the bearing 8 and the convex shoulder 5-1 of the bridge shaft 5. The inner shield 6 and the first baffle 7 form an inner labyrinth seal, so that the inner side of the bearing 8 has a better sealing effect. Figure 5 , 6 As shown, the first baffle 7 of the utility model is provided with an inner ring and an outer ring extending outwardly at the inner ring and the outer ring respectively along the axial direction, the first baffle 7 is connected with the boss 5-1 of the bridge shaft 5, the inner ring is pressed against the inner ring inside the bearing 8, the outer ring of the first baffle 7 is arranged at the inner hole of the inner shield 6 and the bridge gear 2, and a multi-section folded outer sealing channel is formed between the opening of the inner shield 6 and the bridge shaft 5, and between the first baffle 7, the inner shield 6 and the bridge gear 2, which increases the path for flying flowers to enter the bearing 8 and forms a better seal.
[0038] See Figure 5 , 6 As shown, the gear shield 10 of the utility model is installed on the end face of the bridge shaft 5 through the fastener 12, and the second baffle 9 installed on the bridge shaft 5 is located on the outside of the bearing 8. The end plate 10-1 of the gear shield 10 passes through the opening of the outer baffle ring 2-4 and is pressed against the inner ring of the outer side of the bearing 8 through the second baffle 9. The outer baffle ring 2-4 of the bridge gear 2 and the second baffle 9 form an outer labyrinth seal, so that the outer side of the bearing 8 has a better sealing effect. Figure 5 , 6 As shown, the inner ring of the second baffle 9 of the utility model has an axially extending inner ring edge, which presses on the inner ring outside the bearing 8, and a multi-section folded outer sealing channel is formed between the opening of the outer baffle ring 2-4 of the bridge gear 2 and the gear shield 10, as well as between the second baffle 9 and the outer baffle ring 2-4 and the bridge gear 2, which can increase the path for flying flowers to enter the bearing 8 and form a better seal.
[0039] See Figure 5 , 6 As shown, the gear guard 10 of the utility model has an annular seat integral with the end plate 10-1 and a fan-shaped guard plate with one side extending to the outside of the bridge gear 2. The end plate 10-1 is provided with a mounting hole through which a fastener 12 passes. The end plate 10-1 is also provided with a gasket 11. The fastener 12 passes through the gasket 11 and the end plate 10-1 and is fixed to the screw hole on the bridge shaft 5.
Claims
1. A bridge gear for a compact spinning device, the bridge gear (2) meshing with a front roller gear (1-1) on a front roller (1) and a compacting lower roller gear (3-1) on a compacting lower roller (3), the bridge gear (2) comprising an involute bridge tooth (2-1) and a bridge tooth groove (2-2), characterized in that: When the bridge teeth (2-1) and the front roller tooth grooves (1-12) are connected at the pitch circle, the tooth gap h1 between the tooth root bottom surface of the adjacent bridge tooth grooves (2-2) and the highest point of the tooth top surface of the corresponding front roller tooth is between 0.40±0.05mm, and the bridge tooth groove (2-2) has an arc surface (2-3) or a plane tangent to the involute, and transitions to the tooth root bottom surface through the tooth root fillets R on both sides, and the width b of the two tooth root fillets R of the bridge tooth groove (2-2) is between 1.10±0.05mm.
2. The bridge gear for a compact spinning device according to claim 1, characterized in that: When the bridge tooth groove (2-2) and the gathering lower roller tooth (3-11) are connected at the pitch circle, the tooth gap h2 between the tooth top of the gathering lower roller tooth (3-11) and the tooth root bottom surface of the bridge tooth groove (2-2) is between 0.40±0.05 mm.
3. The bridge gear for a compact spinning device according to claim 1, characterized in that: The tooth root fillet R of the bridge tooth groove (2-2) is between 0.20±0.05 mm.
4. The bridge gear for a compact spinning device according to claim 1, characterized in that: The tooth height h of the bridge tooth (2-1) is 2.15±0.05 mm.
5. The bridge gear for a compact spinning device according to claim 1, characterized in that: The bridge gear (2) is provided with a bearing seat (2-5) with a shoulder at the inner hole, and the bridge gear (2) is provided with a connecting portion for mounting the inner cover shell on one side of the roller seat (4), and an outer retaining ring (2-4) integral with the shoulder is provided on the outer side.
6. The bridge gear for a compact spinning device according to claim 5, characterized in that: The connecting portion of the bridge gear (2) is an annular inner stop (2-6) or an annular notch (2-7), and a limiting groove or a limiting convex ring for limiting is provided on the connecting portion.
7. A bridge gear assembly for a compact spinning device, characterized in that: The invention comprises a bridge gear (2) as claimed in any one of claims 1 to 6, and also comprises a bridge shaft (5), a bearing (8) and a sealing mechanism, wherein the bearing (8) is mounted on a bearing seat (2-5) of the bridge gear (2) and the bridge shaft (5); the sealing mechanism comprises a first baffle (7), a second baffle (9), an inner shield (6) and a gear shield (10), wherein the inner shield (6) is sleeved on the bridge shaft (5) and is sealingly mounted on the connecting portion of the bridge gear (2), and the first baffle (7) mounted on the bridge shaft (5) is respectively engaged with the inner ring of the inner side of the bearing (8) and the inner shield (10) of the gear. and the convex shoulder (5-1) of the bridge shaft (5), the inner shield (6) and the first baffle (7) forming an inner labyrinth seal; the gear shield (10) is mounted on the end face of the bridge shaft (5) through a fastener (12), the second baffle (9) mounted on the bridge shaft (5) is located outside the bearing (8), the end plate (10-1) of the gear shield (10) passes through the opening of the outer baffle ring (2-4) and is pressed against the inner ring outside the bearing (8) through the second baffle (9), and the outer baffle ring (2-4) of the bridge gear (2) and the second baffle (9) form an outer labyrinth seal.
8. The bridge gear assembly for a compact spinning device according to claim 7, characterized in that: The first baffle (7) is provided with an inner ring and an outer ring extending outwardly along the axial direction at the inner ring and the outer ring, respectively. The first baffle (7) is connected to the convex shoulder (5-1) of the bridge shaft (5), and the inner ring is pressed against the inner ring inside the bearing (8). The outer ring of the first baffle (7) is arranged at the inner hole of the inner shield (6) and the bridge gear (2), and a multi-stage folded inner sealing channel is formed between the hole of the inner shield (6) and the bridge shaft (5) and between the first baffle (7), the inner shield (6) and the bridge gear (2).
9. The bridge gear assembly for a compact spinning device according to claim 7, characterized in that: The inner ring of the second baffle (9) has an inner ring edge that extends axially, and the inner ring edge is pressed against the inner ring outside the bearing (8), and a multi-section folded outer sealing channel is formed between the opening of the outer baffle ring (2-4) of the bridge gear (2) and the gear shield (10), and between the second baffle (9), the outer baffle ring (2-4) and the bridge gear (2).
10. The bridge gear assembly for a compact spinning device according to claim 7, characterized in that: The gear shield (10) comprises an annular seat integral with the end plate (10-1) and a sector-shaped shield with one side extending outward to the outside of the bridge gear (2); the end plate (10-1) is provided with a mounting hole through which a fastener (12) passes; the end plate (10-1) is also provided with a gasket (11); the fastener (12) passes through the gasket (11) and the end plate (10-1) and is fixed to a screw hole on the bridge shaft (5).
Citation Information
Cited By
A bridge gear for a spin cap
CN224718153U