Heavy type fishing net twisting spindle

Abstract

A spindle blade is installed on a spindle cover and rotates along with a spindle whorl, an elastic tube of a spindle foot assembly is installed on a spindle foot tube, the spindle blade is installed on the elastic tube through a rolling bearing and a thrust bearing, and the bottom of the spindle blade is connected with the bottom of the elastic tube through a copper sleeve. The spindle brake assembly comprises a spindle brake supporting seat, a tension spring, a brake foot bar, a spindle brake ring and two spindle brake blocks, the spindle brake supporting seat is installed on the spindle foot tube, the spindle brake ring is arranged on the spindle sleeve in a sleeving mode and located in a brake ring seat of the wharve, and the tension spring is arranged on the spindle brake ring in a sleeving mode; the plate bodies of the two spindle braking blocks are arranged at the positions corresponding to the guide grooves of the base and the limiting grooves of the spindle braking ring, the wedge heads on the upper portions of the spindle braking blocks are arranged in the wedge grooves, the bottom push plate is arranged on the outer side of the spindle braking ring, and the shifting block at the end of the shifting fork arm on the upper portion of the braking foot bar corresponds to the push plate on the spindle braking blocks. The device is reasonable in structure, effectively solves the problem that the spindle blade moves downwards under load bearing, is convenient in thread breaking operation, and can improve the fishing net thread quality, prolong the service life of the spindle and improve the production efficiency.

Description

Technical Field

[0001] This utility model relates to a heavy-duty spindle for twisting fishing nets, belonging to the technical field of fishing net twisting machines. Background Technology

[0002] After twisting fishing net lines, the fishing net line twisting machine can be used to make various fishing nets, including woven net sheets and sewn net fishing gear. Twisted fishing net lines are stronger, more durable, and can better withstand tensile force, making them less prone to breakage. The spindle is a crucial twisting and winding component on the twisting machine. The fishing net line twisting spindle mainly consists of a spindle disc, spindle rod, and spindle feet assembly. The spindle rod is mounted on the spindle disc and spindle feet. Power drives the spindle disc to rotate the bobbin mounted on the spindle, thus achieving the twisting and winding of the fishing net line. Due to the high spindle speed, the spindle rod undergoes downward axial displacement during high-speed operation as the twisting load on the bobbin changes. This increased load increases the spindle's vibration distance, accelerating bearing wear and damage. Furthermore, the reduced gap between the bottom surface of the lowered spindle rod and the spindle feet allows fine particles and impurities to further accelerate spindle rod wear, resulting in weak twist yarn and affecting the quality of the fishing net line. This also shortens the spindle's lifespan. For fishing net line twisting machines, since the spindles on the machines are not equipped with a braking mechanism, when the fishing net line on individual spindles breaks, the machine needs to be stopped and reconnected, which also affects production efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a heavy-duty spindle for fishing net twisting that has a reasonable structure, can effectively solve the problem of spindle weight shifting downwards, is easy to operate when breaking the line, can improve the quality of fishing net line and the service life of the spindle, and can improve production efficiency.

[0004] The technical solution of this utility model to achieve the above-mentioned objective is: a heavy-duty spindle for twisting fishing nets, characterized in that it includes a spindle disc, a spindle rod, a spindle foot assembly, and a brake assembly;

[0005] The ingot disc includes a disc body, an upper ingot cover, and a bottom brake ring seat. The ingot rod is mounted on the ingot cover and rotates together with the ingot disc.

[0006] The spindle foot assembly includes a spindle foot tube, an elastic tube with a spiral shock-absorbing groove, a shock-absorbing coil spring, and a copper sleeve. The elastic tube is installed on the spindle foot tube, and the first bearing seat and the second bearing seat at the upper part of the elastic tube are located at the top of the spindle foot tube. The rolling bearing and the thrust bearing are respectively installed on the first bearing seat and the second bearing seat. The bearing section on the spindle rod is installed on the upper part of the elastic tube through the rolling bearing and the thrust bearing. The shaft section at the bottom of the spindle rod is connected to the bottom of the elastic tube through the copper sleeve. A shock-absorbing coil spring is provided in the middle and lower part between the spindle foot tube and the elastic tube, and there is a distance between the bottom surface of the spindle rod and the sealing bottom surface of the spindle foot tube.

[0007] The brake assembly includes a brake support, a tension spring, a brake pedal, a brake ring, and two brake blocks. The brake support includes a base and a bushing. The brake support is mounted on the brake foot tube. The base of the brake support has a plane that mates with the shift fork arm of the brake pedal. The center of the plane has a guide groove for guiding the brake blocks, and the lower side has a shift fork arm groove for limiting the shift fork arm. The brake ring consists of two opening and closing semicircular rings. The brake ring is fitted onto the bushing and located inside the brake ring seat of the brake disc. The tension spring is fitted onto the brake ring. The outer side of the brake ring has a braking surface, and the inner side has a braking groove. The brake groove is a through-type limiting groove and a wedge groove. The top of the wedge groove has an inclined top surface. The plates of the two brake blocks are set in the guide groove of the corresponding base and the limiting groove of the brake ring. The wedge head of the upper part of the brake block is set in the wedge groove, and the bottom push plate is set on the outside of the brake ring. The shift fork arm of the upper part of the brake pedal is mounted on the base, and the shift head at the end of the shift fork arm corresponds to the push plate on the brake block. When the brake pedal is pressed down and the push plate is pushed upward, the wedge head of the brake block presses against the inclined top surface of the wedge groove, and the brake surface of the expanded brake ring presses against the inner wall of the brake ring seat to brake the disc. After the brake pedal is reset, the brake ring closes to release the brake on the disc.

[0008] This utility model relates to a heavy-duty spindle for fishing net twisting. The upper part of the elastic tube connected to the spindle rod employs a combination of rolling bearings and thrust bearings. This not only maintains the spindle's radial load-bearing capacity but also significantly improves its axial load-bearing capacity. Therefore, under heavy loads, the overall spindle load-bearing capacity is improved, bearing life is extended, and the problem of spindle rod weight shifting downwards is effectively solved. The bottom of the spindle rod is connected to the elastic tube with a copper sleeve, and a distance is provided between the bottom surface of the spindle rod and the sealed bottom surface of the spindle foot tube, improving the spindle's wear resistance. During high-speed operation, this enhances the spindle rod's stability, reduces weak twisting, and improves the quality of fishing net line and the spindle's lifespan. This utility model also features a brake assembly installed on the spindle foot tube. Operating the brake pedal pushes the brake block to expand the brake ring, braking the spindle disc without stopping the machine. This facilitates line breakage operations and improves production efficiency. The present invention provides a brake ring and brake block that are both located within the brake ring seat of the brake support and the brake ring seat of the disc. This reduces the amount of fly yarn entering between the brake ring and brake block, providing a good dustproof effect. The structure is reasonable and the braking performance is reliable. At the same time, the wedge of the brake block matches the wedge-shaped top surface of the brake groove, which can always maintain the braking torque and improve the working reliability of the brake assembly. Attached Figure Description

[0009] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the structure of a heavy-duty spindle for twisting fishing net thread according to this utility model.

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure along direction A.

[0012] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a heavy-duty spindle for twisting fishing nets according to this utility model.

[0013] Figure 4 This is a three-dimensional structural diagram of the utility model brake assembly after the brake pedal has been removed.

[0014] Figure 5 This is a schematic diagram of the structure of the utility model brake assembly after the brake pedal has been removed.

[0015] Figure 6 yes Figure 5 Schematic diagram of the BB cross-section structure.

[0016] Figure 7 This is a schematic diagram of the brake pedal of this utility model.

[0017] Wherein: 1—spindle rod, 2—spindle disc, 2-1—spindle cover, 2-2—disc body, 2-3—brake ring seat, 3—spindle hook, 4—spindle hook seat, 5—brake ingot support seat, 5-1—base, 5-11—plane, 5-2—shaft sleeve, 5-3—guide groove, 5-4—brake ingot ring guide groove, 5-5—shift fork arm groove, 6—spindle foot nut, 7—spindle foot tube, 8—brake pedal, 8-1—shift fork arm, 8-2—shift head, 8-3—cam shaft, 8-4—pedal, 9—brake ingot ring 9-1—Guide protrusion, 9-2—Brake surface, 9-3—Brake groove, 9-31—Limiting groove, 9-32—Wedge groove, 10—Tension spring, 11—Brake block, 11-1—Push plate, 11-2—Plate body, 11-3—Wedge head, 12—Hole retaining ring, 13—Rolling bearing, 14—Thrust bearing, 15—Elastic tube, 15-1—First bearing seat, 15-2—Second bearing seat, 16—Shock-absorbing coil spring, 17—Copper sleeve, 18—Shaft retaining ring, 19—Cover plate. Detailed Implementation

[0018] See Figures 1-7 As shown, this utility model discloses a heavy-duty spindle for twisting fishing net lines, comprising a spindle disc 2, a spindle rod 1, a spindle foot assembly, and a brake assembly. (See attached image) Figures 1-3 As shown, the spindle disc 2 of this utility model includes a disc body 2-2, an upper spindle cover 2-1, and a bottom brake ring seat 2-3. The spindle rod 1 is installed on the spindle cover 2-1 and rotates together with the spindle disc 2. The spindle cover 2-1 of the spindle disc 2 is provided with a conical hole. The connecting shaft of the spindle rod 1 is installed in the conical hole of the spindle cover 2-1. The disc body 2-2 of the spindle disc 2 is provided with a spindle belt part that matches the spindle belt. The spindle belt is installed at the spindle belt part of the spindle disc 2, driving the spindle disc 2 and the spindle rod 1 to rotate, and twisting and winding the fishing net line with the bobbin installed on the spindle rod 1.

[0019] See Figures 1-3As shown, the spindle assembly of this utility model includes a spindle tube 7, an elastic tube 15 with a spiral shock-absorbing groove, a shock-absorbing coil spring 16, and a copper sleeve 17. The elastic tube 15 is mounted on the spindle tube 7. The elastic tube 15 and the shock-absorbing coil spring 16 may be made of stainless steel. The first bearing seat 15-1 and the second bearing seat 15-2 on the upper part of the elastic tube 15 are located at the top of the spindle tube 7. Therefore, the outer diameter of the bearing seat portion on the elastic tube 15 is larger than the diameter of the elastic tube 15. The rolling bearing 13 and the thrust bearing 14 are correspondingly mounted on the first bearing seat 15-1 and the second bearing seat 15-2. Figure 3 As shown, the bearing section on the spindle 1 of this utility model is installed on the upper part of the elastic tube 15 through rolling bearing 13 and thrust bearing 14. The rolling bearing 13 has good radial bearing capacity, which enables the spindle to run at high speed and stably, while the thrust bearing 14 has good axial bearing capacity, which solves the problem of axial movement caused by heavy spindle under load, thereby improving the working reliability and service life of the spindle.

[0020] See Figure 3 As shown, the diameter of the first bearing seat 15-1 on the upper part of the elastic tube 15 of this utility model is larger than the diameter of the second bearing seat 15-2. The rolling bearing 13 is a deep groove ball bearing and is installed in the first bearing seat 15-1. The inner ring of the rolling bearing 13 is at the shoulder of the spindle 1. The thrust bearing 14 is a planar thrust bearing and is installed in the second bearing seat 15-2. The deep groove ball bearing and the planar thrust bearing are installed back to back. The retaining ring 12 installed in the elastic tube 15 is connected to the outer ring of the rolling bearing 13. The retaining ring 12 is set in the annular groove of the elastic tube 15.

[0021] See Figure 3 As shown, the shaft section at the bottom of the spindle rod 1 of this utility model is connected to the bottom of the elastic tube 15 through a copper sleeve 17. The copper sleeve 17 is used to improve the wear resistance and service life of the spindle rod 1. The bottom of the elastic tube 15 is provided with a stepped hole that matches the copper sleeve 17, and the bottom of the stepped hole is provided with an inward tapered tube. The copper sleeve 17 is tightly pressed into the stepped hole of the elastic tube 15, and the chamfer at the bottom of the copper sleeve 17 is connected to the tapered tube of the elastic tube 15, which facilitates the reliable installation of the copper sleeve 17 and the elastic tube 15. A shock-absorbing coil spring 16 is provided in the middle and lower part between the spindle foot tube 7 and the elastic tube 15. There is a distance between the bottom surface of the spindle rod 1 and the sealing bottom surface of the spindle foot tube 7, so the impurities in the lubricating oil in the spindle foot tube 7 are at the bottom, which can reduce the wear on the spindle rod 1.

[0022] See Figures 1-3As shown, the elastic tube 15 of this utility model is pressed onto the upper part of the spindle foot tube 7 through a tapered hole, and the shoulder of the elastic tube 15 is connected to the end face of the spindle foot tube 7, which facilitates the installation of the elastic tube 15 on the spindle foot tube 7. The spindle foot tube 7 is provided with external threads, and the spindle support 5 is screwed onto the spindle foot tube 7. The end face of the bushing 5-2 of the spindle support 5 is connected to the shoulder of the elastic tube 15, and the spindle foot nut 6 at the lower part of the spindle support 5 is screwed onto the spindle foot tube 7, which facilitates the installation of the spindle on the frame.

[0023] See Figures 1-7 As shown, the brake assembly of this utility model includes a brake support seat 5, a tension spring 10, a brake pedal 8, a brake ring 9, and two brake blocks 11. The brake support seat 5 includes a base 5-1 and a bushing 5-2. The brake support seat 5 is mounted on the brake foot tube 7. The base 5-1 of the brake support seat 5 has a plane 5-11 that matches the shift fork arm 8-1 of the brake pedal 8, facilitating the operation of the shift fork arm 8-1 on the brake blocks 11. The base 5-1 of the brake support disc has a guide groove 5-3 in the middle of the plane 5-11 to guide the brake blocks, and a shift fork arm groove 5-5 on the lower side to limit the shift fork arm 8-1. The shift head 8-2 at the upper end of the shift fork arm 8-1 is placed in the guide groove 5-3. The shift head 8-2 pushes the brake blocks 11 axially, expanding the brake ring 9 to brake the brake disc 2. See Figure 2 , 3 As shown in Figure 7, the brake pedal 8 of this utility model has a convex shaft 8-3 on the inner side of the shift fork arm 8-1. The convex shaft 8-3 is installed in the shift fork arm groove 5-5. The convex shaft 8-3 is a round shaft. The shift fork arm 8-1 is installed on the brake support seat 5. The shift fork arm 8-1 is fulcrumd with the convex shaft 8-3. The bottom of the brake pedal 8 has a pedal 8-4. When the pedal 8-4 is pressed, the shift fork arm 8-1 swings upward along the fulcrum, lifting the brake block 11 and moving it upward, thus expanding the brake ring 9. After the force on the pedal 8-4 is removed, the brake ring 9 closes and resets under the action of the tension spring 10. At the same time, the brake pedal 8 also resets. After the line is broken, the operation is convenient and there is no need to stop the whole machine, thus improving production efficiency.

[0024] See Figures 1-6 As shown, the brake ring 9 of this utility model consists of two open and close semicircular rings. The brake ring 9 is fitted onto the bushing 5-2 and located inside the brake ring seat 2-3 of the spindle disc 2. Braking is achieved by pressing the brake ring 9 against the brake ring seat 2-3 of the spindle disc 2. The tension spring 10 is fitted onto the brake ring 9. The brake ring 9 can be stepped. The tension spring 10 is installed in the tension spring groove of the stepped shaft. The tension spring 10 provides tension to the brake ring 9. When the brake is not needed, the brake ring 9 is closed and will not affect the normal operation of the spindle.

[0025] See Figures 3-6As shown, the brake ring 9 of this utility model has a braking surface 9-2 on the outside and a braking groove 9-3 on the inside. The braking groove 9-3 consists of a through-type limiting groove 9-31 and a wedge groove 9-32. The brake block 11 is installed in the braking groove 9-3 and can move axially in the braking groove 9-3. The brake block 11 includes a plate 11-2, a front wedge head 11-3, and a rear push plate 11-1. The braking groove 9-3 has an inclined top surface at the top of the wedge groove 9-32. The inclined surface of the wedge head 11-3 on the brake block 11 presses against the inclined top surface of the wedge groove 9-32, overcoming the tension of the tension spring 10 and pushing the brake ring 9 to expand. The brake surface 9-2 of the brake ring 9 is then pressed against the inner wall of the brake ring seat 2-3 of the disc 2, thus braking the disc 2. See Figure 5 , 6 As shown in this utility model, the plate 11-2 of the two brake blocks 11 is set at the guide groove 5-3 of the corresponding base 5-1 and the limiting groove 9-31 of the brake ring 9, so that the brake blocks 11 can move freely. The wedge 11-3 at the top of the brake blocks 11 is set in the wedge groove 9-32, and the push plate 11-1 at the bottom is set on the outside of the brake ring 9. Without setting the braking distance, the brake disc 2 can be reliably braked.

[0026] See Figure 6 As shown, the angle β between the inclined surface of the wedge 11-3 and the bottom surface of the guide groove 5-3 is 45±5°. If the angle β is 45°, the angle α between the inclined top surface of the wedge 9-32 and the bottom surface of the guide groove 5-3 is greater than 5 to 10° of the angle β. If the angle α is greater than 10° of the angle β, the inclined surface of the wedge 11-3 is an inclined plane or an inclined convex arc surface, which can maintain the working reliability of the brake block 11.

[0027] See Figures 1-3 As shown, the fork arm 8-1 on the upper part of the brake pedal 8 of this utility model is mounted on the base 5-1. The fork arm 8-1 at the end of the fork arm 8-1 corresponds to the push plate 11-1 on the brake block 11. When the brake pedal 8 is pressed down and the push plate 11-1 is pushed upward, the wedge 11-3 of the brake block 11 presses against the inclined top surface of the wedge groove 9-32. The brake surface 9-2 of the expanded brake ring 9 presses against the inner wall of the brake ring seat 2-3 to brake the disc 2. After the brake pedal 8 is reset, the brake ring 9 closes to release the brake on the disc 2. Under the action of the tension spring 10, the brake ring 9 quickly closes and disengages from the brake ring seat 2-3 of the disc 2. The braking of the cylinder is achieved by operating the brake pedal 8, which facilitates wiring operations and improves work efficiency.

[0028] See Figures 3-6As shown, the base 5-1 of the brake support seat 5 of this utility model is provided with two brake ring guide grooves 5-4 facing the brake ring 9 on both sides of the guide groove 5-3. The brake ring is provided with corresponding downward extending guide protrusions 9-1 and is set in each brake ring guide groove 5-4. When the brake ring 9 expands or closes, the brake ring 9 moves along the brake ring guide groove 5-4. Whether braking the disc 2 or resetting the brake ring 9, the brake ring 9 moves along the brake ring guide groove 5-4 on the brake support seat 5 to ensure improved braking reliability.

[0029] See Figures 3-6 As shown, there is a gap between the brake ring 9 and the bushing 5-2 of the brake support seat 5. The top of the brake ring 9 is also provided with a concave annular groove. The cover plate 19 is fitted on the bushing 5-2 of the brake support seat 5 and is set in the concave annular groove. The shaft retaining ring 18 installed on the bushing 5-2 is connected to the cover plate 19, thus having a good dustproof effect.

[0030] See Figures 1-3 As shown, a hook seat 4 is also installed on the base 5-1 of the brake support seat 5 of this utility model. A hook 3 is installed on the upper part of the hook seat 4. The hook 3 is located on the upper part of the brake ring seat 2-3 of the disc 2, which prevents the disc 2 from moving too much axially when the tube is removed.

Claims

1. A heavy-duty spindle for twisting fishing net lines, characterized in that: Includes a spindle disc (2), a spindle rod (1), a spindle foot assembly, and a brake spindle assembly; The ingot disc (2) includes a disc body (2-2), an upper ingot cover (2-1), and a bottom brake ring seat (2-3). The ingot rod (1) is mounted on the ingot cover (2-1) and rotates together with the ingot disc (2). The spindle assembly includes a spindle tube (7), an elastic tube (15) with a spiral shock-absorbing groove, a shock-absorbing coil spring (16), and a copper sleeve (17). The elastic tube (15) is installed on the spindle tube (7), and the first bearing seat (15-1) and the second bearing seat (15-2) on the upper part of the elastic tube (15) are located at the top of the spindle tube (7). The rolling bearing (13) and the thrust bearing (14) are respectively installed on the first bearing seat (15-1) and the second bearing seat (15-2). The bearing section on the spindle rod (1) is installed on the upper part of the elastic tube (15) through the rolling bearing (13) and the thrust bearing (14). The shaft section at the bottom of the spindle rod (1) is connected to the bottom of the elastic tube (15) through the copper sleeve (17). The middle and lower part between the spindle tube (7) and the elastic tube (15) is provided with a shock-absorbing coil spring (16), and there is a distance between the bottom surface of the spindle rod (1) and the sealing bottom surface of the spindle tube (7). The brake assembly includes a brake support seat (5), a tension spring (10), a brake pedal (8), a brake ring (9), and two brake blocks (11). The brake support seat (5) includes a base (5-1) and a bushing (5-2). The brake support seat (5) is mounted on the brake foot tube (7). The base (5-1) of the brake support seat (5) has a plane (5-11) that matches the fork arm (8-1) of the brake pedal (8). The center of the plane (5-11) has a guide for guiding the brake blocks (11). The groove (5-3) and the lower side are provided with a fork arm groove (5-5) to limit the movement of the fork arm (8-1); the brake ring (9) consists of two opening and closing semicircular rings, which are fitted on the bushing (5-2) and located in the brake ring seat (2-3) of the disc (2), and the tension spring (10) is fitted on the brake ring (9); the brake ring (9) has a braking surface (9-2) on the outside and a braking groove (9-3) on the inside, and the braking groove (9-3) consists of a through limiting groove (9-31) and a wedge groove. (9-32), the brake groove (9-3) is located at the top of the wedge groove (9-32) and has an inclined top surface; the plates (11-2) of the two brake blocks (11) are set at the guide groove (5-3) of the corresponding base (5-1) and the limiting groove (9-31) of the brake ring (9); the wedge head (11-3) of the upper part of the brake block (11) is set in the wedge groove (9-32), the bottom push plate (11-1) is set on the outside of the brake ring (9), and the shift fork arm (8-1) of the upper part of the brake pedal (8) is mounted on the base (5-1). The shift head (8-2) at the end of the shift fork arm (8-1) corresponds to the push plate (11-1) on the brake block (11); when the brake pedal (8) is pressed down and the push plate (11-1) is pushed upward, the wedge (11-3) of the brake block (11) presses against the inclined top surface of the wedge groove (9-32), and the brake surface (9-2) of the expanded brake ring (9) presses against the inner wall of the brake ring seat (2-3) to brake the disc (2); after the brake pedal (8) is reset, the brake ring (9) closes to release the brake on the disc (2).

2. The heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The angle β between the inclined surface on the wedge (11-3) and the bottom surface of the guide groove (5-3) is 45±5°, and the angle α between the inclined top surface of the wedge (9-32) and the bottom surface of the guide groove (5-3) is greater than 5 to 10° of the angle β.

3. A heavy-duty spindle for twisting fishing nets according to claim 1 or 2, characterized in that: The inclined surface of the wedge (11-3) is an inclined plane or an inclined convex arc surface.

4. The heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The base (5-1) of the brake support seat (5) is provided with two brake ring guide grooves (5-4) on both sides of the guide groove (5-3) facing the brake ring (9). The brake ring (9) is provided with corresponding downward extending guide protrusions (9-1) in each brake ring guide groove (5-4). When the brake ring (9) expands or closes, the brake ring (9) moves along the brake ring guide groove (5-4).

5. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: There is a gap between the brake ring (9) and the bushing (5-2) of the brake support seat (5). The top of the brake ring (9) is also provided with a concave annular groove. The cover plate (19) is fitted on the bushing (5-2) of the brake support seat (5) and is set in the concave annular groove. The shaft retaining ring (18) installed on the bushing (5-2) is connected to the cover plate (19).

6. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The base (5-1) of the brake support seat (5) is also equipped with a hook seat (4), and a hook (3) is installed on the upper part of the hook seat (4). The hook (3) is located on the upper part of the brake ring seat (2-3) of the brake disc (2).

7. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The diameter of the first bearing seat (15-1) at the top of the elastic tube (15) is larger than the diameter of the second bearing seat (15-2). The rolling bearing (13) is a deep groove ball bearing and is installed in the first bearing seat (15-1). The inner ring of the rolling bearing (13) is at the shoulder of the spindle (1). The thrust bearing (14) is a planar thrust bearing and is installed in the second bearing seat (15-2). The deep groove ball bearing and the planar thrust bearing are installed back to back. The hole installed in the elastic tube (15) is connected to the outer ring of the rolling bearing (13) by a retaining ring (12).

8. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The bottom of the elastic tube (15) is provided with a stepped hole that matches the copper sleeve (17), and the bottom of the stepped hole is provided with an inward tapered tube. The copper sleeve (17) is tightly pressed into the stepped hole of the elastic tube (15), and the chamfer at the bottom of the copper sleeve (17) is connected to the tapered tube of the elastic tube (15).

9. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The elastic tube (15) is pressed onto the upper part of the spindle foot tube (7) through a tapered hole, and the shoulder of the elastic tube (15) is connected to the end face of the spindle foot tube (7). The spindle foot tube (7) is provided with an external thread. The brake support seat (5) is screwed onto the spindle foot tube (7). The end face of the bushing (5-2) of the brake support seat (5) is connected to the shoulder of the elastic tube (15). The spindle foot nut (6) at the lower part of the brake support seat (5) is screwed onto the spindle foot tube (7).

10. A heavy-duty spindle for twisting fishing nets according to claim 1, characterized in that: The brake pedal (8) has a convex shaft (8-3) inside the shift fork arm (8-1), the convex shaft (8-3) is installed in the shift fork arm groove (5-5), and the brake pedal (8-4) is provided at the bottom.

Images