CN215120444U

CN215120444U - Mechanical clutch device of three-station switch motor of environment-friendly gas-insulated switchgear

Info

Publication number: CN215120444U
Application number: CN202121382449.0U
Authority: CN
Inventors: 杨金德; 蔡长胜; 张佳伟
Original assignee: Shanghai Dahua Electric Equipment Co ltd
Current assignee: Shanghai Dahua Electric Equipment Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-10
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a mechanical clutch device of a three-station switch motor of an environment-friendly gas-insulated switch cabinet, which comprises an operating handle, a rotating cam sleeve, a stop cam sleeve, a thrust needle bearing and a heavy elastic pin which are connected in turn in a driving way; the switching shaft and the return spring are connected in sequence; the device also comprises a gear, a motor rotating shaft sleeve and a steel ball; the motor rotating shaft is sleeved on the switching shaft, and the top of the motor rotating shaft is provided with a second groove; the gear is sleeved on the motor rotating shaft sleeve and is provided with a third groove on the circumference corresponding to the motor rotating shaft; the second groove and the third groove are matched with each other to form a built-in cavity; the steel ball is placed in the built-in cavity; the top of the switching shaft is provided with a first groove, when the switching shaft moves downwards through the operating handle, when the first groove corresponds to the second groove, the gear is manually operated, at the moment, steel balls positioned in the second groove and the third groove roll into the first groove under the extrusion of the inner wall of the gear, and the clutch action is completed. The scheme adopts a single mechanical clutch mode, and greatly improves the mechanical stability.

Description

Mechanical clutch device of three-station switch motor of environment-friendly gas-insulated switchgear

Technical Field

The utility model relates to a machine-building technical field, concretely relates to three station switch motor's of environmental protection gas insulated switchgear mechanical clutch.

Background

In the field of medium-voltage power transmission and distribution equipment, in the use process of a gas insulation switch cabinet and a ring main unit, an independent circuit breaker cannot complete all power utilization operations, three-position switches are often required to be configured to meet different power utilization operation requirements, and all the three-position switches have two functions of electric operation and manual operation.

At present, two manual operations are available for a mainstream three-position switch, one manual operation is without a clutch device, and the three manual operations can directly drive a motor to act together; the other uses an electromagnetic clutch structure. When the three-position switch is manually operated, the motor 1 is clutched by switching off the power supply of the electromagnetic clutch 2, referring to fig. 1, the electromagnetic clutch structure comprises the motor 1, the electromagnetic clutch 2, an output gear 3, a main transmission gear 4 and a chain wheel 5; at the moment, the manual operation drives the main transmission gear 4 through the output gear 3, and the main transmission gear 4 drives the chain wheel 5 to rotate through the main shaft, so that the manual operation of the three-position switch is completed.

The first main flow mode is as follows: when in manual operation, the motor is directly carried to act together. For manual operation, adding a motor means increasing the manual operating torque. In the national standard, the maximum value of the manual operation torque of the three-position switch is regulated, so that the situation that the maximum value is exceeded exists when the three-position mechanism directly drives the motor to act together through manual operation; and thirdly, a control module with functions of locked-rotor alarming and the like is usually configured for operation clicking, the module uses an analog signal to cut off a power supply loop of the motor, but the actual power supply loop of the motor has a short circuit problem, at the moment, the manual operation load is multiplied, the torque is far higher than the maximum value in the national standard, and even the manual operation is still carried out. The emergency manual operation of the electric equipment is very easy to cause serious accidents.

The second main flow mode: the clutch motor is suitable for an electromagnetic clutch. First, the electromagnetic clutch itself has a problem of service life as an electrical element, and the service life of the existing gas insulated switchgear is 30 years or more and is maintenance-free. Secondly, the electromagnetic clutch 2 is not totally closed, and has certain requirements on the use environment, such as the use condition limits of dust, foreign matters, voltage fluctuation, humidity, temperature, ventilation condition, maximum rotating speed and the like. Thirdly, a power supply is needed to be added to the electromagnetic clutch 2 in the auxiliary loop of the switch cabinet; when the clutch is manually operated, the power supply of the electromagnetic clutch 2 needs to be cut off through the action of a microswitch, so that the clutch function is realized; once the power supply circuit of the electromagnetic clutch 2 breaks down, the electromagnetic clutch 2 loses power, so that the motor fails, the three-station mechanism cannot realize electric operation, and accidents are easily caused.

Based on the technical problems existing in the two main flow modes, it can be seen that how to improve the stability of the environment-friendly gas insulated switchgear during manual operation is a problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The technical problem that stability is not high to current gas insulated switchgear exists when carrying out manual operation, the utility model aims to provide an environmental protection gas insulated switchgear three-station switch motor's mechanical clutch, its mode separation and reunion through single machinery, fine overcoming the problem that prior art exists.

In order to achieve the above object, the mechanical clutch device of the three-position switch motor of the environment-friendly gas-insulated switchgear provided by the utility model comprises an operating handle, a rotating cam sleeve, a locking cam sleeve, a thrust needle bearing, a heavy elastic pin, a reset spring, a switching shaft, a gear, a motor rotating shaft sleeve and a steel ball;

the operating handle is connected with the rotating cam sleeve in a driving mode to rotate; the rotating cam sleeve is matched with the stop cam sleeve to move axially, and the stop cam, the thrust needle roller bearing and the heavy elastic pin are sequentially in driving connection; the heavy elastic pin is in driving connection with the switching shaft, and the return spring is positioned at the bottom of the switching shaft; the heavy elastic pin drives the switching shaft to axially move and compress the return spring;

a first groove is formed in the top of the switching shaft; the motor rotating shaft is sleeved on the switching shaft, and a second groove is formed in the top of the motor rotating shaft; the gear is sleeved on the motor rotating shaft sleeve, and a third groove is formed in the circumference corresponding to the motor rotating shaft; the second groove and the third groove are matched with each other to form a built-in cavity; the steel balls are placed in the built-in cavity; the switching shaft axially moves through the operating handle, when the first groove corresponds to the second groove, the gear is manually operated, and at the moment, the steel balls positioned in the second groove and the third groove roll into the first groove under the extrusion of the inner wall of the gear, so that the steel balls are separated from the third groove of the gear, namely, when the gear is manually operated, the steel balls and the motor rotating shaft sleeve are not influenced, and the clutch action is completed.

Furthermore, the cutting surfaces of the rotating cam sleeve and the stopping cam sleeve are matched to form a curved surface structure.

Furthermore, a limiting piece is arranged on the stop cam sleeve in a matched mode; the rotating cam rotates to extrude the stop cam sleeve to move axially along the cutting curved surface.

Furthermore, a hole for fixing the heavy elastic pin is arranged on the switching shaft.

Furthermore, the motor rotating shaft is sleeved outside the switching shaft to form a limiting structure, and the switching shaft is limited to move axially when acting.

Furthermore, a bushing is arranged above the motor rotating shaft sleeve; the bushing is arranged on the motor rotating shaft sleeve to form a limiting structure, so that the motor rotating shaft sleeve is limited to be in a rotating state when the motor rotating shaft sleeve acts.

The mechanical clutch device of the environment-friendly gas-insulated switch cabinet three-station switch motor provided by the scheme has the advantages that the mechanical clutch device uses the characteristic that steel balls roll freely, so that the mechanical clutch device rolls back and forth in the groove of the gear and the switching shaft to complete the clutch action and the reset action, the mechanical clutch device is clutched in a single mechanical mode, the motor action is avoided during manual operation, and the stability during manual operation is greatly improved.

Drawings

The invention is further described with reference to the following drawings and detailed description.

FIG. 1 is a schematic view of a conventional electromagnetic clutch structure;

FIG. 2 is a schematic view of the overall structure of the present mechanical clutch device;

FIG. 3 is a schematic view of a curved surface matching structure of a rotating cam sleeve and a stop cam sleeve in the mechanical clutch device;

fig. 4 is a schematic view of the matching structure between the gear and the motor rotating shaft in the mechanical clutch device.

FIG. 5 is a schematic perspective view of the mechanical clutch device after clutching;

FIG. 6 is a schematic plan view of the mechanical clutch device after clutching;

fig. 7 is a structural sectional view of the mechanical clutch device after clutching.

The following are part numbers in the drawings:

110. interlocking bent plate 120, switching shaft 121, first groove 130, gear 131, steel ball 132, third groove 140, rotating cam sleeve 150, stop cam sleeve 151, stop block 160, thrust needle bearing assembly 170, heavy elastic pin 180, return spring 190, motor shaft sleeve 191, bushing 192 and second groove

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

The technical problem that stability is not high to current gas insulated switchgear when carrying out manual operation, the utility model aims to provide an environmental protection gas insulated switchgear three-position switch motor's mechanical clutch, its intensity through the cooperation and the part itself that utilizes each part a piece reaches the separation and reunion effect, uses single mechanical system separation and reunion, does not take motor action during manual operation, environmental protection gas insulated switchgear three-position switch mechanism's when having improved manual operation stability greatly.

The mechanical clutch device of the gas insulation switch cabinet three-position switch motor provided by the scheme is shown in fig. 2 and comprises an interlocking bent plate 110, a gear 130, a switching shaft 120, steel balls 131, a rotating cam sleeve 140, a locking cam sleeve 150, a thrust needle roller bearing assembly 160, a limiting block 151, a heavy elastic pin 170, a return spring 180 and a motor rotating shaft sleeve 190.

Referring to fig. 3, the interlocking bent plate 110 is cooperatively connected with the rotating cam sleeve 140 for driving the rotating cam sleeve 140 to rotate left and right.

The outer circle radius of the hollow cylinder is used as a cutting line, the hollow cylinder is cut in a rotating mode according to a certain angle to form two cylinders, the two cylinders are the rotating cam sleeve 140 and the stopping cam sleeve 150, and the cutting plane is a matched curved surface of the two cylinders.

The stop cam sleeve 150 is provided with a limit block 151 in a matching way, the stop cam sleeve 150 is clamped by the limit block 151, and when the rotating cam sleeve 140 rotates, the stop cam sleeve can be extruded along a cutting curved surface to enable the stop cam sleeve 150 to move downwards; the limiting block 151 is welded to the frame to be constructed and fixed.

The thrust needle roller bearing assembly 160 is matched with the stop cam sleeve 150; when the stop cam sleeve 150 moves downward, it presses the thrust needle bearing assembly 160 to move downward.

The heavy duty resilient pin 170 is in mating connection with the thrust needle bearing assembly 160; the heavy duty resilient pin 170 is pressed downward by the thrust needle bearing assembly 160.

The upper part of the switching shaft 120 is provided with a first groove 121 for matching with the steel ball 131; the lower part is provided with a hole for placing a heavy elastic pin 170; the switching shaft 120 is moved downward as the heavy-duty resilient pin 170 moves downward.

A return spring 180 is arranged at the bottom of the switching shaft 120, and when the switching shaft 120 moves downwards, the return spring 180 is compressed; the lower part of the return spring 180 is provided with a motor spindle which props against the return spring 180, so that the return spring 180 can only be compressed and cannot move downwards.

The switching shaft 120 and the compression spring 180 are integrally arranged inside the motor rotating shaft sleeve 190 after being mutually connected; the motor shaft sleeve 190 is used to limit the moving direction of the switching shaft 120, and limit the switching shaft 120 to move only up and down but not rotate.

The lower part of the motor rotating shaft sleeve 190 is provided with a long round hole, when the heavy elastic pin 170 is placed in a hole at the lower part of the switching shaft 120, two sides of the heavy elastic pin pass through the long round hole at the lower part of the motor rotating shaft sleeve 190, and when the heavy elastic pin 170 drives the switching shaft 120 to move downwards, the long round hole limits the downward movement stroke of the heavy elastic pin 170 to a certain extent.

The upper portion of the motor shaft sleeve 190 is further provided with a second groove 192 for matching and connecting with the gear 130, and the specific matching relationship will be further described.

Furthermore, a bushing 191 is arranged on the upper part of the motor rotating shaft sleeve 190, the bushing 191 is in fit connection with the upper part of the motor rotating shaft sleeve 190 in a clamping manner, and the bushing 191 is used for limiting the movement of the motor rotating shaft sleeve 190, so that the motor rotating shaft sleeve 190 can rotate and cannot move up and down; wherein the liner 190 is disposed within the bore of the frame to be constructed.

Meanwhile, the lower part of the motor rotating shaft sleeve 190 is connected with the motor main shaft through a key, and the motor rotating shaft sleeve 190 is driven to rotate when the motor main shaft rotates through key connection.

The gear 130 is sleeved on the motor rotating shaft sleeve 190, and a third groove 132 is arranged on the circumference of the gear 130 corresponding to the motor rotating shaft sleeve 190 and corresponds to a second groove 192 on the motor rotating shaft sleeve 190; the cooperation of the third groove 132 and the second groove 192 forms a built-in cavity for placing the steel ball 131 and limiting the steel ball 131.

Referring to fig. 4, when the first groove 121 of the switching shaft 120 corresponds to the second groove 192 of the motor rotation sleeve 190, the gear 130 is manually operated, and at this time, the steel ball 131 inside the gear 130 is pressed by the inner wall of the gear 130 and moves to the center, and rolls to the first groove 121 of the switching shaft 120 through the second groove 192 of the motor rotation sleeve 190, and the steel ball 131 is separated from the third groove 132 of the gear; at this time, when the manual operation gear 130 is operated, the motor is not operated, and the clutch operation is completed.

The working process of the method in specific application is illustrated as follows:

referring to fig. 5 to 7, when manual operation is required, the interlocking bent plate 110 slides forward or backward, the interlocking bent plate 110 drives the rotating cam sleeve 140 to rotate left and right, and the rotating cam sleeve 140 is matched with the curved surface of the stop cam sleeve 150 to drive the stop cam sleeve 150 to move down.

The thrust needle roller bearing assembly 160 is pressed by the stopper cam sleeve 150 to move down and presses the heavy resilient pin 170 to move down, and at this time, the heavy resilient pin 170 moves the switching shaft 120 down and compresses the return spring 180.

When the switching shaft 120 moves downwards, and the first groove 121 on the switching shaft 120 corresponds to the second groove 192 on the motor shaft sleeve 190, when the driving gear 130 is manually operated to rotate, the gear 130 applies a circumferential force to the steel ball 131 arranged inside the gear 130, the steel ball 131 arranged inside the gear 130 is pressed by the inner wall of the gear 130 to move towards the center, and the steel ball rolls towards the first groove 121 of the switching shaft 120 through the second groove 192 of the motor shaft 190.

After the steel ball 131 is separated from the third groove 132 on the inner side of the gear, the rotation of the gear 130 does not affect the steel ball 131 and the motor spindle sleeve 190 any more; at this time, when the manual operation gear 130 is operated, the motor is not operated, and the clutch operation is completed.

After the manual operation is finished, the interlocking bent plate 110 is restored to the original position, the rotating cam sleeve 140 is driven to be restored to the original position, the compressed return spring 180 pushes the switching shaft 120 to move upwards through the elastic restoring force, the heavy elastic pin 170 on the switching shaft 120 pushes the thrust needle roller bearing assembly 160 to move upwards, and the stop cam sleeve 150 is pushed by the thrust needle roller bearing assembly 160 to move upwards.

The steel ball 131 is pressed by the switching shaft 120 in an upward motion, and is forced to roll in the outer circumferential direction of the gear 130 by the first groove 121 of the switching shaft 120. At this time, if the third groove 132 of the gear 130 is aligned with the hole of the motor spindle sleeve 180, the steel ball 131 directly enters the third groove 132 of the gear 130 through the second groove 192 of the motor spindle sleeve 190, and the clutch device is reset.

If the third groove 132 of the gear is not aligned with the second groove 192 of the motor shaft sleeve, the motor spindle is driven to align the second groove 192 of the motor shaft sleeve with the third groove 121 of the gear after rotating, when the second groove 192 of the motor shaft sleeve is aligned with the third groove 121 of the gear, the steel ball 131 can instantly enter the second groove 192 and the third groove 121 under the thrust of the switching shaft 120, the reset action is completed, and when the motor acts, the mechanism acts, and the motor can effectively complete the motor operation at this moment.

The scheme applies the characteristic that the steel ball rolls freely, so that the steel ball rolls back and forth in the grooves of the gear and the switching shaft to complete the clutch action and the reset action; meanwhile, the conversion of the displacement effect of left-right rotation and up-down movement is completed through the curved surface matching of the rotating cam sleeve and the locking cam sleeve, and the motion conversion of the rotation of the motor and the rolling reset of the steel balls is solved.

The mechanical clutch device formed by the scheme effectively utilizes the matching of the support parts of all parts and the strength of the parts to achieve the clutch effect; the clutch is realized in a single mechanical mode, the operating torque is small, the motor does not act during manual operation, an additional power supply and a control loop are not needed, and the service life of the clutch is long; meanwhile, the clutch is little affected by the environment and has better clutch effect.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A mechanical clutch device of a three-station switch motor of an environment-friendly gas-insulated switch cabinet is characterized by comprising an operating handle, a rotating cam sleeve, a stop cam sleeve, a thrust needle bearing, a heavy elastic pin, a return spring, a switching shaft, a gear, a motor rotating shaft sleeve and steel balls;

2. The mechanical clutch device for the three-position switch motor of the environment-friendly gas-insulated switch cabinet according to claim 1, wherein the cutting surfaces of the rotating cam sleeve and the stopping cam sleeve are matched to form a curved surface structure.

3. The mechanical clutch device for the three-position switch motor of the environment-friendly gas-insulated switch cabinet according to claim 1, wherein the stop cam sleeve is provided with a limiting piece in a matching manner; the rotating cam rotates to extrude the stop cam sleeve to move axially along the cutting curved surface.

4. The mechanical clutch device of the three-position switch motor of the environment-friendly gas-insulated switch cabinet according to claim 1, wherein the switching shaft is provided with a hole for fixing a heavy elastic pin.

5. The mechanical clutch device of the three-position switch motor of the environment-friendly gas-insulated switch cabinet according to claim 1, wherein the motor rotating shaft is sleeved outside the switching shaft to form a limiting structure, so as to limit the axial movement of the switching shaft during the action.

6. The mechanical clutch device of the three-position switch motor of the environment-friendly gas-insulated switch cabinet according to claim 1, wherein a bushing is arranged above a motor rotating shaft sleeve; the bushing is arranged on the motor rotating shaft sleeve to form a limiting structure, so that the motor rotating shaft sleeve is limited to be in a rotating state when the motor rotating shaft sleeve acts.