CN217563506U - Electromagnetic braking device for linear motor rotor - Google Patents
Electromagnetic braking device for linear motor rotor Download PDFInfo
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- CN217563506U CN217563506U CN202220786745.5U CN202220786745U CN217563506U CN 217563506 U CN217563506 U CN 217563506U CN 202220786745 U CN202220786745 U CN 202220786745U CN 217563506 U CN217563506 U CN 217563506U
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- force applying
- applying unit
- linear motor
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Abstract
The electromagnetic brake device for the rotor of the linear motor comprises an adsorbable element, a rotor shaft, a servo motor and a brake element, wherein the adsorbable element is connected with the rotor shaft of the linear motor and moves along with the servo motor; the first magnetic force applying unit comprises a permanent magnet for generating a first magnetic field and an electromagnet for generating a second magnetic field, and the first magnetic field and the second magnetic field are counteracted; and a second magnetic force applying unit having the same structure as the first magnetic force applying unit; the second magnetic force applying unit and the first magnetic force applying unit are respectively arranged at two sides of the adsorbable component, and the second magnetic force applying unit and the first magnetic force applying unit can be loosened or attracted to the adsorbable component. The rotor of the linear motor can be automatically braked when the power is cut off.
Description
Technical Field
The utility model relates to a linear electric motor field especially relates to an electromagnetic braking device for linear electric motor active cell.
Background
The linear motor is an advanced linear motion driver, linear motion is directly realized by the motor, and a transmission mechanism in the traditional transmission design is omitted. The linear motor consists of a primary part and a secondary part, and realizes the relative reciprocating linear motion of the primary part and the secondary part under the action of electromagnetic force. However, the motor has no constraint between the primary and the secondary under the condition of power failure, particularly the moving part is bound to fall off when the motor is vertically installed and used, and serious potential safety hazard is caused when no brake is applied.
The linear motor motion brake is not provided with the standard universal parts at home and abroad at present.
Therefore, it is necessary to research an electromagnetic braking device for a mover of a linear motor to solve one or more of the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned at least one technical problem, according to the utility model discloses an aspect provides a linear electric motor is electromagnetic braking device for active cell, its characterized in that includes:
the adsorbable element is connected with a rotor shaft of the linear motor and moves along with the rotor;
the first magnetic force applying unit comprises a permanent magnet for generating a first magnetic field and an electromagnet for generating a second magnetic field, and the first magnetic field and the second magnetic field are counteracted; and
a second magnetic force applying unit having the same structure as the first magnetic force applying unit;
the second magnetic force applying unit and the first magnetic force applying unit are respectively arranged at two sides of the adsorbable element, and the second magnetic force applying unit and the first magnetic force applying unit can be loosened or attracted to the adsorbable element.
According to still another aspect of the present invention, the second magnetic force applying unit is provided on both sides of the adsorbable element symmetrically to the first magnetic force applying unit.
According to the present invention, the second magnetic force applying unit and the first magnetic force applying unit are provided at a top end plate of the linear motor.
According to the utility model discloses in another aspect, the second magnetic force is applyed the unit with the first magnetic force is applyed the unit and is passed through L shape panel beating leg joint in linear electric motor's top end plate respectively.
According to the utility model discloses in another aspect, the second magnetic force is applyed the unit with the first magnetic force is applyed the unit and is passed through connecting block and L shape panel beating leg joint respectively.
According to the utility model discloses in another aspect, L shape panel beating support has elastic deformation under the second magnetic force is applyed the actuation effect that unit and first magnetic force were applyed between the unit.
According to still another aspect of the present invention, a predetermined gap is provided between the second magnetic force applying unit and the first magnetic force applying unit and the adsorbable element.
According to yet another aspect of the invention, the adsorbable element is a cast iron element.
According to the utility model discloses in another aspect, under the electro-magnet outage state the permanent magnet actuation adsorbable component, linear electric motor is the linear electric motor of vertical installation.
According to the utility model discloses in another aspect, linear electric motor is electromagnetic arresting gear for active cell still include the control unit for control electro-magnet outage is in order to brake when the linear electric motor outage the active cell.
The utility model discloses can obtain following one or more technological effect:
the structure is simple and reliable, and the installation is convenient;
the logic of power-off braking and power-on operation is adopted, so that the braking device can still play a role under the condition of sudden power-off, the motor and the operator are effectively protected, and safety accidents are avoided;
the magnetic force applying unit with high response and large suction force is adopted, so that the rotor shaft of the linear motor can be effectively and quickly braked.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of an electromagnetic braking apparatus for a linear motor mover according to a preferred embodiment of the present invention.
Detailed Description
The best mode of the present invention will be described in detail with reference to the accompanying drawings, wherein the detailed description is to be regarded as illustrative in nature and not as restrictive, and various changes and modifications may be made without departing from the spirit and scope of the present invention.
Example 1
According to a preferred embodiment of the present invention, referring to fig. 1, there is provided an electromagnetic braking device for a linear motor mover, comprising:
an adsorbable element 1 connected with a mover shaft 9 of the linear motor and moving together with the mover;
the first magnetic force applying unit 4 comprises a permanent magnet for generating a first magnetic field and an electromagnet for generating a second magnetic field, and the first magnetic field and the second magnetic field are counteracted; and
a second magnetic force applying unit 7 having the same structure as the first magnetic force applying unit 4;
wherein, the second magnetic force applying unit 7 and the first magnetic force applying unit 4 are respectively arranged at two sides of the adsorbable element 1.
Preferably, the second magnetic force applying unit 7 may release or attract the adsorbable component 1 with the first magnetic force applying unit 4. When the rotor is loosened, the rotor moves freely, and when the rotor is attracted, the rotor is braked. Preferably, the second magnetic force applying unit 7 and the first magnetic force applying unit 4 may be respectively attracted to the adsorbable component 1 from both lateral directions.
According to still another preferred embodiment of the present invention, the second magnetic force applying unit 7 is symmetrically provided to both sides of the adsorbable element 1 with respect to the first magnetic force applying unit 4.
According to another preferred embodiment of the present invention, the second magnetic force applying unit 7 and the first magnetic force applying unit 4 are provided at a top end plate 8 of the linear motor.
According to another preferred embodiment of the present invention, the second magnetic force applying unit 7 and the first magnetic force applying unit 4 are respectively connected to the top end plate of the linear motor through an L-shaped sheet metal bracket.
According to another preferred embodiment of the present invention, the second magnetic force applying unit 7 and the first magnetic force applying unit 4 are respectively connected to the L-shaped sheet metal bracket through a connecting block.
According to another preferred embodiment of the present invention, the L-shaped sheet metal bracket has elastic deformation under the action of the attracting force between the second magnetic force applying unit 7 and the first magnetic force applying unit 4.
According to still another preferred embodiment of the present invention, a predetermined gap is provided between the second magnetic force applying unit 7 and the first magnetic force applying unit 4 and the adsorbable element 1.
According to a further preferred embodiment of the present invention, the adsorbable element 1 is a cast iron element.
According to another preferred embodiment of the present invention, the electromagnet is powered off, the permanent magnet is attracted to the adsorbable element 1, and the linear motor is a vertically installed linear motor.
According to another preferred embodiment of the present invention, the electromagnetic braking device for a rotor of a linear motor further comprises a control unit for controlling the electromagnet to be powered off to brake the rotor while the linear motor is powered off.
According to the utility model discloses still another preferred embodiment, cast iron component with linear electric motor active cell axle 9 passes through the bolt rigid coupling, whole arresting gear by first L type panel beating support 3 with second L type panel beating support 6 pass through the bolt rigid coupling in on the linear electric motor top end plate 8.
Preferably, the first and second magnetic force applying units 4 and 7 are cylindrical permanent bodies, and the demagnetizing coils are sealed by epoxy resin on the outer sides.
Preferably, the first magnetic force applying unit 4 and the second magnetic force applying unit have screw holes at the back, and are respectively fixed to the first connecting block 2 and the second connecting block 5 by bolts.
Preferably, first L type sheet metal support 3 with second L type sheet metal support 6 adopts 2.5 mm's 304 stainless steel preparation, possess outstanding elastic deformation ability.
Preferably, the first L-shaped metal plate support 3 and the second L-shaped metal plate support 6 are connected with the first connecting block 2 and the second connecting block 5 through a plurality of through holes.
Preferably, the first L-shaped sheet metal support 3 and the second L-shaped sheet metal support 6 are connected with a plurality of threaded holes of the top end plate 8 of the linear motor through a plurality of through holes.
Preferably, the first L-shaped sheet metal support 3 and the second L-shaped sheet metal support 6 have a certain angle with the sheet metal part in the power-on state, so that the first magnetic force applying unit 4 and the second magnetic force applying unit 7 can be in complete contact with the surface of the cast iron element after power-off attraction.
According to another preferred embodiment of the present invention, the linear electric motor braking system is controlled by an upper computer, and when the motor is normally operated, the upper computer controls the magnetic force applying unit to be energized to generate a reverse magnetic field, which cancels the magnetic field of the permanent magnet, and the magnetic force applying unit is disengaged from the cast iron element, so that the rotor shaft of the linear electric motor can freely move up and down. When the motor needs to stop, the upper computer cuts off the power source of the linear motor and controls the magnetic force applying units to cut off the power, no current does not act in the demagnetizing coil at the moment, the magnetic force applying units on the two sides attract the cast iron element to generate static friction force, and the rotor shaft is kept at a fixed position due to the existence of the static friction force to achieve the braking purpose.
According to another preferred embodiment of the present invention, there is provided an electromagnetic braking device for a linear motor rotor, comprising: the arresting gear is installed at linear electric motor shell top, and it contains:
the cast iron element has the same width and thickness as the rotor shaft of the linear motor, is arranged at the top of the rotor shaft, has a round chamfer at the top end, synchronously moves along with the main shaft and is adsorbed by the magnetic force applying unit;
the magnetic force applying units are fixed on the connecting plate through bolts and arranged between the cast iron element and the L-shaped sheet metal bracket, and a gap is reserved between the magnetic force applying units and the cast iron element;
the bottom of the sheet metal part is fixed on an end cover at the top of the linear motor through bolts, the top of the sheet metal part is fixedly connected with the magnetic force applying unit through a connecting block, and the L-shaped sheet metal support deforms towards the rotor shaft direction under the electromagnetic effect;
under the power-off state, the magnetic force applying units on the two sides drive the L-shaped sheet metal bracket to deform so as to attract the cast iron element to generate static friction force;
under the power-on state, the demagnetizing coil works to counteract the suction force, the L-shaped sheet metal support drives the magnetic force applying unit to reset and is separated from the cast iron element, and the rotor shaft can move freely.
According to another preferred embodiment of the present invention, the magnetic force applying units are arranged in two sets, symmetrically distributed at the middle positions of two sides of the rotor shaft, and a deformation gap is reserved between the magnetic force applying units and the cast iron element.
According to another preferred embodiment of the present invention, the cast iron member is fixed to the top of the rotor shaft, and the follower shaft moves synchronously with the rotor shaft and has the same width and thickness as the rotor shaft.
According to another preferred embodiment of the present invention, the magnetic force applying unit has a screw hole at a back portion thereof for connection with the connection block. A plurality of threaded holes are formed in the back of the connecting block, and a plurality of through holes are formed in the L-shaped sheet metal bracket and are connected with the connecting block through screws;
l type sheet metal component the clearance between unit and the cast iron component is applyed to magnetic force in the elastic deformation scope of L type sheet metal support.
The utility model discloses can obtain following one or more technological effect:
the structure is simple and reliable, and the installation is convenient;
the logic of power-off braking and power-on operation is adopted, so that the braking device can still play a role under the condition of sudden power-off, the motor and the operator are effectively protected, and safety accidents are avoided;
the magnetic force applying unit with high response and large suction force is adopted, so that the rotor shaft of the linear motor can be effectively and quickly braked.
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 (10)
1. The utility model provides a linear electric motor is electromagnetic braking device for active cell which characterized in that includes:
the adsorbable element is connected with a rotor shaft of the linear motor and moves along with the rotor;
the first magnetic force applying unit comprises a permanent magnet for generating a first magnetic field and an electromagnet for generating a second magnetic field, and the first magnetic field and the second magnetic field are counteracted; and
a second magnetic force applying unit having the same structure as the first magnetic force applying unit;
the second magnetic force applying unit and the first magnetic force applying unit are respectively arranged at two sides of the adsorbable component, and the second magnetic force applying unit and the first magnetic force applying unit can be loosened or attracted to the adsorbable component.
2. The electromagnetic brake device for a mover of a linear motor according to claim 1, wherein the second magnetic force applying unit is provided symmetrically to the first magnetic force applying unit on both sides of the adsorbable element.
3. The electromagnetic brake apparatus for a mover of a linear motor according to claim 2, wherein the second magnetic force applying unit and the first magnetic force applying unit are provided at a top end plate of the linear motor.
4. The electromagnetic brake device for a mover of a linear motor according to any one of claims 1 to 3, wherein said second magnetic force applying unit and said first magnetic force applying unit are connected to a top end plate of the linear motor through L-shaped sheet metal brackets, respectively.
5. The electromagnetic braking device for the linear motor rotor according to claim 4, wherein the second magnetic force applying unit and the first magnetic force applying unit are connected to the L-shaped sheet metal bracket through connecting blocks, respectively.
6. The electromagnetic braking device for the rotor of the linear motor according to claim 5, wherein the L-shaped metal plate bracket has elastic deformation under the action of the attraction force between the second magnetic force applying unit and the first magnetic force applying unit.
7. The electromagnetic brake apparatus for a linear motor mover according to claim 6, wherein a predetermined gap is provided between the second magnetic force applying unit and the first magnetic force applying unit and the adsorbable member.
8. An electromagnetic brake apparatus for a mover of a linear motor according to claim 7, wherein said adsorbable member is a cast iron member.
9. The electromagnetic brake device for a linear motor mover according to claim 7, wherein said permanent magnet attracts said adsorbable member in a de-energized state of said electromagnet, said linear motor being a vertically mounted linear motor.
10. An electromagnetic brake apparatus for a mover of a linear motor according to claim 9, further comprising a control unit for controlling the electromagnets to be deenergized to brake the mover at the same time as the linear motor is deenergized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220786745.5U CN217563506U (en) | 2022-04-06 | 2022-04-06 | Electromagnetic braking device for linear motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220786745.5U CN217563506U (en) | 2022-04-06 | 2022-04-06 | Electromagnetic braking device for linear motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217563506U true CN217563506U (en) | 2022-10-11 |
Family
ID=83470215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220786745.5U Active CN217563506U (en) | 2022-04-06 | 2022-04-06 | Electromagnetic braking device for linear motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217563506U (en) |
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2022
- 2022-04-06 CN CN202220786745.5U patent/CN217563506U/en active Active
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