CN221202308U - Electromagnetic braking motor loss-of-magnetic braking device - Google Patents

Abstract

The utility model discloses a loss-of-magnetic braking device of an electromagnetic braking motor, which comprises a loss-of-magnetic brake and a braking release locking mechanism, wherein the loss-of-magnetic brake is arranged on a non-shaft extending end cover of a stator of the electromagnetic braking motor, the upper end of a release handle of the loss-of-magnetic brake extends out from a through hole at the top of a fan cover, the braking release locking mechanism comprises a double-lug base, a spanner and a pull arm, the double-lug base is fixed at the upper part of the fan cover, one end of the spanner is rotationally connected with the double-lug base through a horizontal rotating shaft perpendicular to the axis of the electromagnetic braking motor, one end of the pull arm is rotationally connected with the middle part of the spanner, and the other end of the pull arm is rotationally connected with the upper end of the release handle. According to the utility model, the brake release locking mechanism is additionally arranged on the release handle of the magnetic-loss brake, when the brake is braked due to circuit failure, the magnetic-loss brake can be turned into and kept in a non-braking state through the mechanism, so that the tundish car can be quickly driven into an overhaul position, equipment failure is eliminated in time, and the downtime is reduced.

Description

Electromagnetic braking motor loss-of-magnetic braking device

Technical Field

The utility model relates to an electromagnetic braking motor loss-of-magnetic braking device suitable for a continuous casting workshop tundish car, and belongs to the technical field of motors.

Background

The electromagnetic braking motor has the characteristics of rapid braking, accurate positioning and the like, is suitable for various machines which are operated in a reciprocating mode and frequently started and braked, and is widely applied to steel plants.

The middle tank car of the steel mill continuous casting workshop adopts an electromagnetic brake motor as main transmission of a running transmission device, a non-magnetic brake of the electromagnetic brake motor is arranged on an end cover at the non-shaft extension end of the motor, when the non-magnetic brake is connected with a power supply, an electromagnet attracts an armature and compresses a spring under the electromagnetic attraction action of a brake coil, a brake disc is separated from the end cover of the armature, and the motor starts to operate and drags the middle tank car to operate. When the power supply is cut off, the electromagnet of the demagnetizing brake loses magnetic attraction, the spring pushes the armature to press the brake disc, the motor immediately stops rotating under the action of friction torque, and the tundish car stops at a corresponding working position.

The electromagnetic brake motor of the continuous casting tundish car is provided with a release handle, and the brake can be released in a short time by moving the release handle in the abnormal operation processes such as the adjustment of the gap of a brake disc. After the release handle is stopped from being moved, the brake is restored to a braking state under the action of the return spring.

When continuous casting is produced, the middle tank truck is positioned in a molten metal splash area, the electromagnetic brake motor is hung and installed at high altitude, and as the release handle of the existing loss of magnetic brake does not have a brake release locking function, once the control circuit of the brake fails, maintenance personnel cannot maintain the brake in a non-braking state, the middle tank truck stops running, and the middle tank truck cannot quickly drive into an overhaul area from a dangerous working area, so that great inconvenience is caused to overhaul of equipment, and therefore, the device is necessary to be improved.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides an electromagnetic braking motor loss-of-magnetic braking device, so that a middle tank truck with a brake fault can quickly enter a maintenance position from a dangerous working area, and convenience is brought to maintenance of fault equipment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides an electromagnetic braking motor loss of excitation arresting gear, includes loss of excitation stopper and braking release locking mechanical system, the loss of excitation stopper is installed on the non-axle of electromagnetic braking motor's stator stretches the end cover, and the upper end of the release handle of loss of excitation stopper stretches out from the through-hole at electromagnetic braking motor's fan housing top, braking release locking mechanical system includes ears base, spanner and arm, ears base is fixed on fan housing upper portion, the one end of spanner is rotated with ears base through the horizontal rotating shaft with electromagnetic braking motor's axis vertically and is connected, the one end of arm is rotated with the middle part of spanner and is connected, and the other end is rotated with release handle's upper end and is connected.

Above-mentioned electromagnetic braking motor loss of excitation arresting gear, the spanner is U type structure, and the middle part of the straight arm in both sides of spanner is passed through the main shaft and is connected, and the non-link of the straight arm in both sides of spanner is rotated with the ears base through the horizontal pivot perpendicular with electromagnetic braking motor's axis and is connected, the arm includes right arm-tie and left arm-tie, right arm-tie and left arm-tie are located the both sides of the release handle of loss of excitation stopper respectively, and the upper end rotation connection of handle axle and release handle is passed through to right arm-tie and left arm-tie, and the other end is rotated with the main shaft and is connected.

According to the electromagnetic braking motor loss-of-magnetic braking device, the horizontal rotating shaft between the spanner and the double-lug base comprises the right rotating shaft and the left rotating shaft, the right rotating shaft and the left rotating shaft are coaxial and are respectively located on two sides of the double-lug base, and the non-connecting ends of the straight arms on two sides of the spanner are respectively connected with the lug plates on two sides of the double-lug base in a rotating mode through the right rotating shaft and the left rotating shaft.

According to the utility model, the brake release locking mechanism is additionally arranged on the release handle of the electromagnetic brake motor demagnetizing brake, when the brake is in a braking state due to circuit failure, the demagnetizing brake can be switched into and kept in a non-braking state through the mechanism, and then the tundish car can be quickly driven into a maintenance position from a dangerous working area. By utilizing the device, equipment faults can be removed in time, and the downtime is reduced.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a front view of the utility model in an unlocked state;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a front view of the present utility model in a locked state;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a front view of the brake release locking mechanism;

Fig. 6 is a top view of fig. 5.

The reference numerals in the figures are as follows: 1. a stator; 2. fan housing 3, the loss of excitation stopper, 4, release frame, 5, release handle, 6, right arm-tie, 7, left arm-tie, 8, main shaft, 9, right pivot, 10, left pivot, 11, handle axle, 12, ears base, 13, spanner, 14, yoke subassembly, 15, brake disc.

Detailed Description

The utility model provides an improved electromagnetic braking motor loss-of-magnetic braking device, when a brake control circuit fails, a maintenance person can maintain a brake in a non-braking state through manual operation, and a tundish car can rapidly drive into an overhaul area from a dangerous working area, so that equipment failure can be removed in time, and the downtime is reduced.

Referring to fig. 1-6, the utility model mainly comprises a loss-of-magnetic brake 3 and a brake release locking mechanism, wherein an electromagnetic brake motor comprises a stator 1, a motor rotor, a motor fan and a fan cover 2, and the loss-of-magnetic brake 3 comprises a C-shaped release frame 4, a release handle 5, a magnetic yoke assembly 14 and a brake disc 15.

The brake release locking mechanism comprises a pull arm (comprising a right pull plate 6 and a left pull plate 7), a main shaft 8, a right rotating shaft 9, a left rotating shaft 10, a handle shaft 11, a double-lug base 12 and a spanner 13.

Fig. 1, 2, 3 and 4 show that the fan housing 2 is fixed on the non-shaft extending side of the stator 1, the double-lug base 12 is welded on the fan housing 2, the demagnetizing brake 3 is mounted on the non-shaft extending end cover of the stator 1, two ends of the C-shaped release frame 4 are connected with the magnetic yoke assembly 14, and the release handle 5 is connected with the midpoint position of the C-shaped release frame 4. The release handle 5 and the C-shaped release frame 4 form a lever together, and the release handle 5 is pulled by hand to pry the magnetic yoke assembly 14 in a direction away from the stator 1, so that the magnetic yoke assembly 14 is separated from the brake disc 15 to release the brake. After releasing the release handle 5, the magnetic yoke assembly 14 is reset under the action of the internal reset spring, and the demagnetizing brake 3 is restored to a braking state.

Fig. 1, 5 and 6 show that the upper end of the release handle 5 protrudes from a through hole in the top of the fan housing 2, and the handle shaft 11 passes through the right pulling plate 6, the release handle 5 and the left pulling plate 7 to connect the demagnetizing brake 3 to the brake release locking mechanism. The spanner 13 is of a U-shaped structure, and the main shaft 8 penetrates through the right pull plate 6 and the left pull plate 7 to be connected with the middle parts of straight arms on two sides of the spanner 13. The right and left pulling plates 6 and 7 are rotatable about the main shaft 8 with respect to the spanner 13. The non-connecting ends of the straight arms at the two sides of the spanner 13 are respectively and rotatably connected with the lug plates at the two sides of the double-lug base 12 through the right rotating shaft 9 and the left rotating shaft 10. The spanner 13 is rotatable about the right and left rotation shafts 9 and 10 with respect to the binaural base 12.

Fig. 1 and 2 show that, under normal conditions, after the loss of electricity of the magnetic brake, the release handle 5 and the C-shaped release frame 4 together form a lever, and under the elastic force of the return spring of the magnetic yoke assembly 14, the release handle 5 turns over towards the stator 1 (i.e. turns over to the left) and pulls the spanner 13 to rotate around the right rotating shaft 9 and the left rotating shaft 10 towards the stator 1 (i.e. turns over to the left) through the right pulling plate 6 and the left pulling plate 7, so that the magnetic brake 3 is in a braking state.

Fig. 3 and 4 show that the manual plate moves the spanner 13 to rotate around the right rotating shaft 9 and the left rotating shaft 10 relative to the double-lug base 12 in a direction away from the stator 1, the spanner 13 pulls the right pulling plate 6 and the left pulling plate 7 through the main shaft 8, and the release handle 5 drives the C-shaped release frame 4 to pry the magnetic yoke assembly 14 under the traction of the right pulling plate 6 and the left pulling plate 7, so that the brake is released. When the spanner 13 turns over the top dead center, the spanner 13 is blocked by the fan cover 2 and cannot turn over continuously, and the spanner 13 stays at one side of the top dead center under the elastic force of the return spring of the magnetic yoke assembly 14.

The specific working principle and the operation mode are that under the normal state, the spanner 13 is turned over towards the direction of the stator 1 by taking the right rotating shaft 9 and the left rotating shaft 10 as axes and locked at one side of the bottom dead center of the brake release locking mechanism under the traction force of the return spring of the magnetic yoke assembly and the release handle. When the electromagnet of the electromagnetic brake motor non-magnetic brake of the continuous casting tundish car is electrified to attract the armature, the positions of the pull handle and the release handle are unchanged, and the normal work of the brake is not affected. In the fault state of the electromagnet, the spanner is rotated in the direction away from the stator 1 until the spanner passes through the top dead center, and the spanner is locked at the side of the top dead center of the brake release locking mechanism by the traction force of the reset spring and the release handle. At the moment, the release handle compresses the return spring under the traction of the right pulling plate 6 and the left pulling plate 7, the brake disc is separated from the armature end cover, and the electromagnetic brake motor can run freely.

According to the utility model, the brake release locking mechanism is connected to the release handle of the electromagnetic brake motor magnetic-loss brake of the continuous casting tundish car, when the brake cannot release the brake due to the failure of the control circuit, the magnetic-loss brake can be kept in a non-braking state by moving the spanner handle of the brake release locking mechanism, so that the tundish car can rapidly drive into a maintenance position from a dangerous working area, thereby being beneficial to timely eliminating equipment failure and reducing the downtime.

Claims (3)

1. The utility model provides an electromagnetic braking motor loss of magnetism arresting gear, its characterized in that includes loss of magnetism stopper (3) and braking release locking mechanical system, loss of magnetism stopper (3) are installed on the non-axle of electromagnetic braking motor's stator (1) stretches the end cover, and the upper end of release handle (5) of loss of magnetism stopper (3) stretches out from the through-hole at fan housing (2) top of electromagnetic braking motor, braking release locking mechanical system includes ears base (12), spanner (13) and arm-tie, ears base (12) are fixed on fan housing (2) upper portion, the one end of spanner (13) is through rotating with ears base (12) through the horizontal axis perpendicular with electromagnetic braking motor's axis, the one end of arm-tie is connected with the middle part rotation of spanner (13), and the other end is connected with the upper end rotation of release handle (5).

2. The electromagnetic braking motor loss-of-magnetic braking device according to claim 1, wherein the spanner (13) is of a U-shaped structure, the middle parts of the straight arms on two sides of the spanner (13) are connected through a main shaft (8), the non-connecting ends of the straight arms on two sides of the spanner (13) are rotationally connected with the double-lug base (12) through a horizontal rotating shaft perpendicular to the axis of the electromagnetic braking motor, the spanner comprises a right pull plate (6) and a left pull plate (7), the right pull plate (6) and the left pull plate (7) are respectively positioned on two sides of a release handle (5) of the loss-of-magnetic brake (3), one ends of the right pull plate (6) and the left pull plate (7) are rotationally connected with the upper end of the release handle (5) through a handle shaft (11), and the other ends of the straight arms are rotationally connected with the main shaft (8).

3. The electromagnetic braking motor loss magnetic braking device according to claim 2, wherein the horizontal rotating shaft between the spanner (13) and the double-lug base (12) comprises a right rotating shaft (9) and a left rotating shaft (10), the right rotating shaft and the left rotating shaft are coaxial and are respectively positioned at two sides of the double-lug base (12), and the non-connecting ends of the straight arms at two sides of the spanner (13) are respectively connected with the lug plates at two sides of the double-lug base (12) in a rotating way through the right rotating shaft (9) and the left rotating shaft (10).