CN212959656U - Mandrel lifting machine auxiliary device - Google Patents

Abstract

The utility model discloses a mandrel lifter auxiliary device, which comprises a buffer vertically arranged between a lifter chain and a mandrel; the buffer comprises a transverse bottom plate fixedly connected with the top surface of the core rod, a buffer cylinder vertically and fixedly arranged at the top of the bottom plate, a transverse top plate fixedly connected to the top of the buffer cylinder, a sliding block vertically arranged inside the buffer cylinder, a pull rod vertically penetrating through the center of the top plate and a lifting ring fixedly arranged at the top of the pull rod and connected with a chain. The lifting machine is often promoting the plug, the utility model discloses play the damping effect, make the pulling force of chain exert on the plug gradually by little to big, rather than the instantaneous application. Therefore, when the mandrel is lifted, the impact of the mandrel, the chain, the fixed pulley and the winch is reduced, and the service life of the hoister is prolonged.

Description

Mandrel lifting machine auxiliary device

Technical Field

The utility model relates to a high-speed wire rod production facility technical field, concretely relates to mandrel hoist auxiliary device.

Background

The high-speed wire rod needs to be rolled out and wound on a core rod in the production process, and after the high-speed wire rod is wound into a steel coil, the core rod needs to be lifted upwards from the steel coil by a lifter and then extracted. The weight of the core rod is generally 3 to 5 tons, and the weight is heavy. The core rod is lifted by the hoister through the chain wound on the fixed pulley, so that the pulling force borne by the hoister for pulling the chain is large, the power consumption is large, and the service life is short.

When the mandrel is lifted, the tensile force of the chain is suddenly loaded on the mandrel, so that the chain is subjected to large impact force, and the service lives of the chain, the fixed pulley and the winch are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a mandrel lifting machine auxiliary device for solve the problem that the impact force that the chain received is big when the plug promoted.

In order to solve the above problems, the utility model adopts the following technical scheme:

a mandrel lifter auxiliary device comprises a buffer vertically arranged between a chain of a lifter and a mandrel; the buffer comprises a transverse bottom plate fixedly connected with the top surface of the core rod, a buffer cylinder vertically and fixedly arranged at the top of the bottom plate, a transverse top plate fixedly connected with the top of the buffer cylinder, a sliding block vertically arranged in the buffer cylinder, a pull rod vertically penetrating through the center of the top plate and a hanging ring fixedly arranged at the top of the pull rod and connected with a chain; the pull rod is in sliding fit with the top plate and is fixedly connected with the sliding block; the sliding block is in clearance fit with the buffer cylinder; the bottom plate, the buffer cylinder, the top plate and the pull rod form a closed cavity, and liquid for providing resistance is filled in the cavity.

Furthermore, the upper part of the inner wall of the buffer cylinder is conical, the diameter of which is gradually reduced from bottom to top, and the upper part of the sliding block is conical, the shape of which is consistent with that of the corresponding part of the buffer cylinder; the cavity comprises an upper oil chamber above the slider and a lower oil chamber below the slider, and the upper oil chamber and the lower oil chamber are communicated by virtue of a gap between the inner wall of the buffer cylinder and the slider.

Furthermore, a first through hole communicated with the upper oil chamber is formed in the side wall of the upper portion of the buffer cylinder, a second through hole communicated with the lower oil chamber is formed in the side wall of the lower portion of the buffer cylinder, and a bypass pipe communicated with the first through hole and the second through hole is arranged outside the buffer cylinder.

Furthermore, a throttle valve is arranged on the bypass pipe.

Furthermore, a spring is arranged between the top plate and the sliding block.

Further, it still includes the balancing weight that sets up on hoist engine one side chain of lifting machine.

Furthermore, a sealing ring sleeved on the pull rod is arranged between the top plate and the pull rod.

Furthermore, a sealing glue is coated or a sealing gasket is arranged between the top plate and the buffer cylinder.

The utility model discloses an actively the effect does:

1. the utility model discloses be equipped with the buffer cylinder, be filled with the liquid that provides the resistance in the buffer cylinder, be equipped with the slider in the buffer cylinder. The upper part of the sliding block and the surface matched with the buffer cylinder are both conical. The lifting machine is often promoting the plug, the utility model discloses play the damping effect, make the pulling force of chain exert on the plug gradually by little to big, rather than the instantaneous application. Therefore, when the mandrel is lifted, the impact of the mandrel, the chain, the fixed pulley and the winch is reduced, and the service life of the hoister is prolonged.

2. A bypass pipe is arranged outside the buffer cylinder, and a throttle valve is arranged on the bypass pipe. A part of liquid flows from the upper oil chamber to the lower oil chamber in the buffer cylinder through the bypass pipe, and the flow of the part of liquid can be adjusted by using the throttle valve, so that the movement time of the sliding block in the buffer cylinder can be adjusted when the mandrel is lifted, and the impact force when the mandrel is lifted by the chain can be adjusted.

3. The balancing weight on the chain of the hoister side reduces the pulling force borne by the hoister, reduces the working power of the hoister and saves electric energy.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of a buffer structure;

in the figure, 1, a winch; 2. a chain; 3. a core rod; 4. a balancing weight; 5. a fixed pulley; 6. a first through hole; 7. a second through hole; 8. a base plate; 9. a buffer cylinder; 10. a slider; 11. a spring; 12. a pull rod; 13. a top plate; 14. a seal ring; 15. a hoisting ring; 16. an upper oil chamber; 17. a lower oil chamber; 18. a bypass pipe; 19. a throttle valve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, a fixed pulley 5 is suspended above the mandrel 3, and one end of the chain 2 is wound on the winch 1, and the other end thereof passes upward around the fixed pulley 5 and then is connected with the top of the mandrel 3 through a buffer. The buffer comprises a transverse circular bottom plate 8 fixedly connected with the top surface of the core rod 3 through a screw, a cylindrical buffer cylinder 9 vertically welded at the top of the bottom plate 8, a transverse circular top plate 13 fixedly connected with the top of the buffer cylinder 9 through a screw, a cylindrical sliding block 10 vertically arranged in the buffer cylinder 9, a round rod-shaped pull rod 12 vertically penetrating the center of the top plate 13 and a hanging ring 15 fixed at the top of the pull rod 12 through threads; the utility model discloses a buffer tube, including a buffer tube 9, pull rod 12, slider 10, pull rod 12, top plate 13, slide fit, slider 10 and buffer tube 9, pull rod 12 and top plate 13 are through connection, pull rod 12 and top plate 13 are sliding fit, slider 10 and buffer tube 9 are clearance fit, the top of slider 10 is through screw thread and pull rod 12 fixed connection, be equipped with sealing washer 14 between top plate 13 and the pull rod 12, scribble sealed glue between top plate 13 and the buffer tube 9. The bottom plate 8, the buffer cylinder 9, the top plate 13 and the pull rod 12 form a closed cavity, and the cavity is filled with liquid for providing resistance.

The upper part of the inner wall of the buffer cylinder 9 is conical in the big radial direction, and the upper part of the sliding block 10 is conical in shape which is consistent with the shape of the buffer cylinder 9; the cavity is divided into two parts by the slider 10, namely an upper oil chamber 16 above the slider 10 and a lower oil chamber 17 below the slider 10, and the upper oil chamber 16 and the lower oil chamber 17 are communicated by means of a gap between the inner wall of the buffer cylinder 9 and the slider 10. A spring 11 is arranged between the top plate 13 and the sliding block 10, and the spring 11 is sleeved on the pull rod 12.

When the mandrel 3 is lifted by the winch 1, the liquid in the upper oil chamber 16 flows into the lower oil chamber 17 through the gap between the slide block 10 and the buffer cylinder 9, and plays a role of damping. When the conical surface of the upper part of the slide block 10 is gradually close to the conical surface of the top of the buffer cylinder 9, the flow cross section area of the liquid is gradually reduced, and the resistance of the corresponding liquid is gradually increased, namely the buffer plays a role in damping from small to large, so that the acting force of the chain 2 on the core rod 3 is gradually applied from small to large rather than being instantaneously applied to the maximum. Therefore, when the hoisting machine lifts the mandrel 3, under the action of the slide block 10, the buffer cylinder 9 and the spring 11, the impact on the mandrel 3, the chain 2, the fixed pulley 5 and the hoisting machine 1 is reduced, and the service life of the chain 2, the fixed pulley 5 and the hoisting machine 1 is prolonged.

The buffer cylinder 9 is characterized in that a first through hole 6 communicated with an upper oil chamber 16 is formed in the side wall of the upper portion of the buffer cylinder 9, a second through hole 7 communicated with a lower oil chamber 17 is formed in the side wall of the lower portion of the buffer cylinder 9, and a C-shaped bypass pipe 18 for communicating the first through hole 6 with the second through hole 7 is arranged outside the buffer cylinder 9. The two ends of the bypass pipe 18 are respectively connected with the first through hole 6 and the second through hole 7 through threaded high-pressure joints. The bypass pipe 18 is provided with a throttle valve 19. A part of the liquid flows from the upper oil chamber 16 to the lower oil chamber 17 through the bypass pipe 18, and the flow rate of the part of the liquid can be adjusted by using the throttle valve 19, so that the movement time of the slide 10 in the buffer cylinder 9 when the mandrel 3 is lifted can be adjusted, and the impact force when the chain 2 lifts the mandrel 3 can be adjusted.

The chain 2 on one side of the winch 1 is fixedly provided with the balancing weight 4, so that the pulling force borne by the winch 1 is reduced, the working power of the winch 1 is reduced, and the electric energy is saved.

Claims (8)

1. The mandrel lifter auxiliary device is characterized by comprising a buffer vertically arranged between a chain (2) and a mandrel (3) of the lifter; the buffer comprises a transverse bottom plate (8) fixedly connected with the top surface of the core rod (3), a buffer cylinder (9) vertically and fixedly arranged at the top of the bottom plate (8), a transverse top plate (13) fixedly connected with the top of the buffer cylinder (9), a slide block (10) vertically arranged in the buffer cylinder (9), a pull rod (12) vertically penetrating through the center of the top plate (13) and a hanging ring (15) fixedly arranged at the top of the pull rod (12) and used for being connected with the chain (2); the pull rod (12) is in sliding fit with the top plate (13), and the pull rod (12) is fixedly connected with the sliding block (10); the sliding block (10) is in clearance fit with the buffer cylinder (9); the bottom plate (8), the buffer cylinder (9), the top plate (13) and the pull rod (12) form a closed cavity, and liquid for providing resistance is filled in the cavity.

2. The auxiliary device of the mandrel lifter as claimed in claim 1, wherein the upper part of the inner wall of the buffer cylinder (9) is conical with the diameter gradually decreasing from bottom to top, and the upper part of the sliding block (10) is conical with the shape consistent with that of the corresponding part of the buffer cylinder (9); the cavity comprises an upper oil chamber (16) above the slider (10) and a lower oil chamber (17) below the slider (10), and the upper oil chamber (16) and the lower oil chamber (17) are communicated by means of a gap between the inner wall of the buffer cylinder (9) and the slider (10).

3. The auxiliary device of the mandrel lifter as claimed in claim 2, wherein a first through hole (6) communicated with the upper oil chamber (16) is formed in the side wall of the upper portion of the buffer cylinder (9), a second through hole (7) communicated with the lower oil chamber (17) is formed in the side wall of the lower portion of the buffer cylinder (9), and a bypass pipe (18) communicating the first through hole (6) with the second through hole (7) is formed outside the buffer cylinder (9).

4. A mandrel hoist auxiliary device according to claim 3, characterized in that a throttle valve (19) is arranged on the bypass pipe (18).

5. A mandrel hoist auxiliary device according to claim 1, characterized in that a spring (11) is provided between the top plate (13) and the slider (10).

6. The mandrel hoist auxiliary device as claimed in claim 1, further comprising a weight block (4) disposed on a chain (2) on one side of the hoist (1) of the hoist.

7. The mandrel hoist auxiliary device as claimed in claim 1, wherein a sealing ring (14) sleeved on the pull rod (12) is arranged between the top plate (13) and the pull rod (12).

8. The mandrel hoist auxiliary device as claimed in claim 1, wherein a sealant is coated or a sealing gasket is arranged between the top plate (13) and the buffer cylinder (9).

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