Winding drum capable of being replaced quickly

Abstract

The utility model discloses a winding drum capable of being replaced quickly, which belongs to the technical field of metallurgical rolling equipment and comprises a main shaft in a crimping machine and a winding drum main shaft which are axially connected through a bolt. One end, far away from the winding drum main shaft, of the piston rod is connected with a collapsible oil cylinder; a pull rod is arranged in the winding drum spindle, and the other end of the pull rod is connected with a diameter expansion and shrinkage structure which is connected to the winding drum spindle in a sleeving mode. The pull rod and the piston rod are connected through a spring mechanism to control diameter expansion and diameter shrinkage of the winding drum. The pull rod and the piston rod are connected through the spring mechanism, normal diameter expansion and shrinkage of the winding drum are guaranteed, the length of the pull rod and the length of the piston rod can be controlled, the pull rod does not need to be too long, and a spindle of the winding drum is further prevented from extending into a speed reducer. On the premise that normal diameter expansion and shrinkage are guaranteed, the technical problem that when a traditional drum shaft is replaced, the replacement time is long due to the fact that a main shaft penetrates through a speed reducer is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical rolling equipment and relates to a quickly replaced reel. Background Art

[0002] In the field of steel rolling and nonferrous metals in the metallurgical industry, in order to adapt to market demand, many manufacturers produce steel coils with an inner diameter of 508 in the morning and steel coils with an inner diameter of 610 in the afternoon. Replacing the reel is time-consuming and labor-intensive, so there is an urgent need to replace the reel conveniently and quickly to improve production efficiency and reduce production costs.

[0003] In the prior art, the main shaft in the winding machine is fixedly installed on the reducer, and the reel main shaft and the pull rod pass through the reducer. When replacing or repairing, the reel main shaft and the pull rod must be directly pulled out horizontally for 1m-2m, which is time-consuming and laborious. When installing, the reel main shaft and the pull rod must be inserted axially for 1m-2m, which is even more time-consuming and laborious. Therefore, this kind of quick-change reel is particularly important for quick and convenient reel replacement while ensuring normal winding. Utility Model Content

[0004] The utility model aims to provide a reel that can be quickly replaced, and solves the technical problem of long replacement time caused by the main shaft passing through a reducer when replacing a traditional reel shaft by using spring compression while ensuring normal diameter expansion and contraction.

[0005] The technical solution adopted by the utility model is a quickly replaced reel, comprising a main shaft inside a reeling machine and a reel main shaft, the main shaft inside the reeling machine and the reel main shaft are axially connected by bolts; a piston rod is provided inside the main shaft inside the reeling machine, and an expansion and contraction cylinder is connected to the end of the piston rod away from the reel main shaft; a pull rod is provided inside the reel main shaft, and an expansion and contraction structure is connected to the other end of the pull rod, and the expansion and contraction structure is sleeved on the reel main shaft; the pull rod and the piston rod are connected by a spring mechanism to control the expansion and contraction of the reel.

[0006] The utility model is also characterized in that:

[0007] The spring mechanism includes a nut screwed on the pull rod near the end of the main shaft in the curling machine, and the nut abuts against the end of the piston rod; the spring mechanism also includes a first spring seat and a second spring seat arranged in the reel main shaft; a first spring is arranged in the first spring seat, one end of the first spring abuts against the nut, and the other end of the first spring abuts against the first spring seat; a second spring is arranged in the second spring seat, one end of the second spring abuts against the second spring seat, and the other end of the second spring abuts against a retaining ring, and the retaining ring abuts against the pull rod shoulder.

[0008] The compression amount of the first spring and the second spring is greater than the expansion stroke.

[0009] The pull rod is sleeved with bearings near both ends in the circumferential direction, and the bearings are clamped on the inner wall of the winding drum main shaft.

[0010] The main shaft inside the crimping machine and the main shaft of the reel are radially connected by keys.

[0011] The expansion and contraction structure comprises an axial wedge and a radial wedge which cooperate with each other. The axial wedge is sleeved on the reel main shaft and connected to the pull rod, and the radial wedge is sleeved on the outer periphery of the axial wedge.

[0012] The beneficial effects of the utility model are:

[0013] The utility model adopts a spring mechanism to connect the pull rod and the piston rod. The pull rod and the piston rod are connected by the spring mechanism to ensure the normal expansion and contraction of the reel, and the length of the pull rod and the piston rod can be controlled. There is no need to set the pull rod too long, which further avoids the reel main shaft from extending into the reducer. According to the technical scheme of the utility model, the length of the pull rod can be slightly longer than the reel main shaft, which greatly shortens the length of the pull rod, so that no matter the reel main shaft is disassembled or installed, it is only necessary to pull the pull rod flatly to extend the length of the reel main shaft. Under the premise of ensuring normal expansion and contraction, it solves the technical problem of long replacement time caused by the main shaft passing through the reducer when replacing the traditional reel shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the quick-change reel of the utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of the quick-change reel of the utility model after it is disassembled;

[0017] Figure 4 yes Figure 3 Right view of;

[0018] Figure 5 It is a structural schematic diagram of a reel in the prior art;

[0019] Figure 6 It is a schematic diagram of the disassembly structure of the reel in the prior art.

[0020] In the figure, 1. expansion and contraction cylinder, 2. main shaft in the crimping machine, 3. piston rod, 4. bolt, 5. nut, 6. first spring, 7. key, 8. pull rod, 9. reel main shaft, 10. axial wedge, 11. radial wedge, 12. first spring seat, 13. retaining ring, 14. second spring, 15. second spring seat, 16. bearing, 17. traditional expansion and contraction cylinder, 18. main shaft in the traditional crimping machine, 19. traditional reel main shaft, 20. traditional pull rod. DETAILED DESCRIPTION

[0021] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example 1

[0023] like Figure 1 As shown, the quick-change reel provided by the utility model includes a main shaft 2 in the winding machine and a reel main shaft 9, which are axially connected by bolts 4; a piston rod 3 is provided in the main shaft 2 in the winding machine, and the end of the piston rod 3 away from the reel main shaft 9 is connected to the expansion and contraction cylinder 1; a pull rod 8 is provided in the reel main shaft 9, and the other end of the pull rod 8 is connected to an expansion and contraction structure, which is sleeved on the reel main shaft 9; the pull rod 8 and the piston rod 3 are connected by a spring mechanism to control the expansion and contraction of the reel.

[0024] like Figure 5 and Figure 6 As shown, in the conventional winding machine, the main shaft 18 is fixedly mounted on the reducer, and the conventional winding main shaft 19 and the conventional tie rod 20 pass through the reducer. When replacing or overhauling, the conventional winding main shaft 19 and the conventional tie rod 20 need to be directly pulled out 1m-2m, which is time-consuming and laborious. When installing, the conventional winding main shaft 19 and the conventional tie rod 20 need to be inserted 1m-2m axially, which is even more time-consuming and laborious. The utility model adopts a spring mechanism to connect the pull rod 8 and the piston rod 3, which solves the above-mentioned problems existing in the traditional reel. The pull rod 8 and the piston rod 3 are connected by the spring mechanism to ensure the normal expansion and contraction of the reel, and the length of the pull rod 8 and the piston rod 3 can be controlled. There is no need to set the pull rod 8 too long, which further avoids the reel main shaft 9 from extending into the reducer. According to the technical solution of the utility model, the length of the pull rod 8 can be slightly longer than the reel main shaft 9, which greatly shortens the length of the pull rod 8, so that whether the reel main shaft 9 is disassembled or installed, it is only necessary to pull the pull rod 8 flatly to extend the length of the reel main shaft 9, which saves time and improves work efficiency.

[0025] Example 2

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, on the basis of Example 1, the spring mechanism of the utility model includes a nut 5 screwed on the pull rod 8 near the end of the main shaft 2 in the curling machine, and the nut 5 abuts against the end of the piston rod 3; the spring mechanism also includes a first spring seat 12 and a second spring seat 15 arranged in the reel main shaft 9; a first spring 6 is arranged in the first spring seat 12, one end of the first spring 6 abuts against the nut 5, and the other end of the first spring 6 abuts against the first spring seat 12; a second spring 14 is arranged in the second spring seat 15, one end of the second spring 14 abuts against the second spring seat 15, and the other end of the second spring 14 abuts against a retaining ring 13, and the retaining ring abuts against the shoulder of the pull rod 8.

[0027] In the utility model, a double spring is used to provide power. A first spring seat 12 and a second spring seat 14 are installed in the reel main shaft 9. The first spring seat 12 and the second spring seat 14 are both fixed. The first spring seat 12 cooperates with the nut 5. The nut 5 is spirally connected to the end of the pull rod 8 and forms an integral body with the pull rod 8. Its outer diameter is larger than the pull rod 8. The purpose is to cooperate with the first spring 6. The inner diameter of the first spring 6 is larger than the outer diameter of the pull rod 8. The elastic force of the first spring 6 on the nut 5 drives the pull rod 8 to move, and further drives the piston rod 3 to move; the second spring seat 15 and the pull rod The second spring 14 is mounted in the second spring seat 15, and a retaining ring 13 is provided at one end of the second spring 14 away from the second spring seat 15. When the diameter increases, the pull rod 8 moves to the left, driving the retaining ring 13 to compress the second spring 14 to the left. When the diameter decreases, the second spring 14 releases the pressure, driving the retaining ring 13 to move to the right. The retaining ring 13 cooperates with the shaft shoulder to drive the pull rod 8 to move to the right.

[0028] Furthermore, the compression amount of the first spring 6 and the second spring 14 is greater than the expansion stroke, ensuring that the springs can achieve normal expansion and contraction conditions.

[0029] Furthermore, bearings 16 are sleeved on both ends of the pull rod 8 in the circumferential direction, and the bearings 16 are clamped on the inner wall of the reel main shaft 9.

[0030] Since the pull rod 8 is relatively long inside the reel main shaft 9 , in order to stabilize the pull rod 8 and limit its radial position, bearings 16 are sleeved near both ends of the pull rod 8 , and the bearings 16 can be installed in the installation grooves in the inner cavity of the reel main shaft 9 .

[0031] Furthermore, the inner main shaft 2 of the crimping machine and the reel main shaft 9 are radially connected via a key 7 .

[0032] When replacing the reel, unscrew and remove the bolt 4, pull it out a little, and the crane can lift all the parts to the left of the serial number nut 5. When installing, you only need to engage the stop of the inner spindle 2 of the crimping machine with the transverse keyway on the reel spindle 9, that is, the inner spindle 2 of the crimping machine and the reel spindle 9 are connected with the key 7 to prevent the inner spindle 2 of the crimping machine and the reel spindle 9 from rotating relative to each other, and the nut 5 will be against the piston rod 3, tighten the bolt 4, and the reel is replaced.

[0033] Example 3

[0034] On the basis of Example 1, the expansion and contraction structure of the utility model includes an axial wedge 10 and a radial wedge 11 that cooperate with each other. The axial wedge 10 is sleeved on the reel main shaft 9 and connected to the pull rod 8, and the radial wedge 11 is sleeved on the outer periphery of the axial wedge 10.

[0035] When the diameter is increased, the expansion and contraction cylinder 1 pushes the piston rod 3 to push the nut 5, compressing the first spring 6 and the second spring 14, and also pushing the pull rod 8, which drives the axial wedge 10 and the radial wedge a11 to increase the diameter. When the diameter is reduced, the expansion and contraction cylinder 1 leaks oil, and the cylinder side of the piston rod 3 is not subjected to force, but the nut 5 is subjected to the opening pressure of the first spring 6, and the shoulder of the pull rod 8 is subjected to the opening pressure of the second spring 14, which drives the nut 5 and the pull rod 8 to move in the direction of the piston rod 3 to complete the reduction. Here, the compression length of the first spring 6 and the second spring 14 must be greater than the expansion stroke, so that when the reduction is minimum, the first spring 6 and the second spring 14 are still in a compressed state, and the nut 5 is always pressing against the piston rod 3.

Claims

1. Quick-change reel, characterized in that: The invention comprises a main shaft (2) in a winding machine and a main shaft (9) in a reel, wherein the main shaft (2) in the winding machine and the main shaft (9) in the reel are axially connected by bolts (4); a piston rod (3) is arranged in the main shaft (2) in the winding machine, and an expansion and contraction cylinder (1) is connected to one end of the piston rod (3) away from the main shaft (9); a pull rod (8) is arranged in the main shaft (9), and an expansion and contraction structure is connected to the other end of the pull rod (8), and the expansion and contraction structure is sleeved on the main shaft (9); the pull rod (8) and the piston rod (3) are connected by a spring mechanism to control the expansion and contraction of the reel.

2. The quick-change reel according to claim 1, characterized in that: The spring mechanism comprises a nut (5) screwed onto the end of the pull rod (8) near the inner main shaft (2) of the curling machine, and the nut (5) abuts against the end of the piston rod (3); the spring mechanism also comprises a first spring seat (12) and a second spring seat (15) arranged in the reel main shaft (9); a first spring (6) is arranged in the first spring seat (12), one end of the first spring (6) abuts against the nut (5), and the other end of the first spring (6) abuts against the first spring seat (12); a second spring (14) is arranged in the second spring seat (15), one end of the second spring (14) abuts against the second spring seat (15), and the other end of the second spring (14) abuts against a retaining ring (13), and the retaining ring abuts against the shaft shoulder of the pull rod (8).

3. The quick-change reel according to claim 2, characterized in that: The compression amount of the first spring (6) and the second spring (14) is greater than the expansion stroke.

4. The quick-change reel according to claim 1, characterized in that: The pull rod (8) is sleeved with bearings (16) near both ends in the circumferential direction, and the bearings (16) are clamped on the inner wall of the reel main shaft (9).

5. The quick-change reel according to claim 1, characterized in that: The inner main shaft (2) of the crimping machine and the main shaft (9) of the winding drum are radially connected via a key (7).

6. The quick-change reel according to claim 1, characterized in that: The expansion and contraction structure comprises an axial wedge (10) and a radial wedge (11) which cooperate with each other. The axial wedge (10) is sleeved on the reel main shaft (9) and connected to the pull rod (8), and the radial wedge (11) is sleeved on the outer periphery of the axial wedge (10).

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