CN215186394U - Electric pick without traditional stator and rotor motor - Google Patents
Electric pick without traditional stator and rotor motor Download PDFInfo
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- CN215186394U CN215186394U CN202121225077.0U CN202121225077U CN215186394U CN 215186394 U CN215186394 U CN 215186394U CN 202121225077 U CN202121225077 U CN 202121225077U CN 215186394 U CN215186394 U CN 215186394U
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- electric pick
- permanent magnet
- driving mechanism
- electromagnetic driving
- rotor motor
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Abstract
The utility model discloses a no tradition decides, rotor motor's electric pick, it includes impact mechanism, permanent magnet and electromagnetic drive mechanism. The permanent magnet is fixed on the impact mechanism; the magnetic poles on the electromagnetic driving mechanism are arranged opposite to the permanent magnets, the polarity of the magnetic poles of the electromagnetic driving mechanism is changed periodically, and the impact mechanism moves towards the direction close to or away from the magnetic poles along with the change of the polarity of the magnetic poles so as to realize the reciprocating linear motion of the impact mechanism. The linear reciprocating motion of the impact mechanism is realized through the matching of the electromagnetic driving mechanism and the permanent magnet. The electric pick is not required to be provided with a traditional motor with a rotor and a stator to drive the impact mechanism, so that the electric pick can operate without the traditional motor. After the traditional motor is omitted in the electric pick, the weight of the machine body can be reduced, and the use comfort of a user can be further improved. And meanwhile, the intermediate transmission in the conventional electric pick is reduced, and the defect that the eccentric shaft bearing is subjected to large impact force in the impact process of the drill bit is overcome.
Description
Technical Field
The utility model relates to an electric tool field, in particular to no tradition decide, rotor motor's electric pick.
Background
The electric pick is powered by a motor to drive a compression vacuum type impact mechanism to output impact energy, so that a drill bit can impact the impact mechanism to achieve the purpose of crushing, flattening or excavating on hard concrete, rock and other materials. The working principle is that the output power of the motor transmits impact energy through the compression type impact mechanism to crush rock or concrete, and the eccentric wheel shaft of the gear is driven by the motor to drive the crank connecting rod mechanism to enable the piston to do reciprocating linear motion in the cylinder during working. By utilizing the principle of an air cushion, the air hammer continuously strikes the impact head to output impact energy.
A large impact hammer in an electric pick in the prior art reciprocates in a cylinder, an O-shaped ring is easily abraded, so that the impact force is insufficient, and the working efficiency is influenced. And adopt traditional stator, rotor motor, the weight of photoelectricity machine has just taken up the complete machine one third, leads to complete machine weight big, uses for a long time and leads to the operator to be tired. The heat, noise (mainly motor cooling fan), vibration (rotor unbalance, fan shake, unbalanced force of eccentric structure, etc.) of the motor in the operation process influence the use comfort of the operator. The motor is adopted to drive the crank connecting rod mechanism through the eccentric wheel shaft to enable the piston to do reciprocating linear motion in the cylinder, but the eccentric shaft bearing is subjected to large impact force in the impact process of the drill bit and is easy to lose efficacy.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an electric pick that does not have tradition and decide, rotor motor in order to overcome the defect that the electric pick among the prior art adopts motor drive to lead to complete machine weight big, influence operation travelling comfort etc..
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model provides a do not have electric pick of tradition stator, rotor motor which characterized in that, it includes:
an impact mechanism;
the permanent magnet is fixed on the impact mechanism;
the magnetic pole of the electromagnetic driving mechanism is opposite to the permanent magnet, the polarity of the magnetic pole of the electromagnetic driving mechanism is changed periodically, and the impact mechanism moves towards the direction close to or far away from the magnetic pole along with the change of the polarity of the magnetic pole so as to realize the reciprocating linear motion of the impact mechanism.
In the scheme, the polarity of the magnetic pole of the electromagnetic driving mechanism is changed, so that the polarity of the magnetic pole of the electromagnetic driving mechanism is switched between the same polarity as or different from that of the permanent magnet, and further, when the polarity of the magnetic pole of the electromagnetic driving mechanism is the same as that of the permanent magnet, the electromagnetic driving mechanism generates repulsion force on the permanent magnet, so that the permanent magnet moves in the direction away from the electromagnetic driving mechanism; when the polarity of the magnetic pole of the electromagnetic driving mechanism is different from that of the permanent magnet, the electromagnetic driving mechanism generates attraction force on the permanent magnet, so that the permanent magnet moves towards the direction close to the electromagnetic driving mechanism. The permanent magnet is fixed with the impact mechanism, the end part of the impact mechanism can be driven by the permanent magnet to move towards or away from the electromagnetic driving mechanism in the moving process, and the other end of the impact mechanism swings under the driving of the impact mechanism towards one end of the permanent magnet.
Through the structure and the principle, the traditional motor with the rotor and the stator does not need to be arranged in the electric pick to drive the impact mechanism, and the electric pick can be operated under the condition without the traditional motor. After the traditional motor is omitted in the electric pick, the weight of the machine body can be reduced, and the use comfort of a user can be further improved. The motor is not required to be cooled by a cooling fan without the traditional motor drive, so that the noise caused by the rotation of the fan is avoided, and the phenomena of vibration, unbalance and the like caused by the rotation of the fan, the rotor and the like are avoided, and the use comfort of a user is improved. Compared with the traditional motor drive, the electric pick is driven by the electromagnetic drive mechanism, so that the intermediate transmission (an eccentric wheel shaft drives a crank connecting rod mechanism) in the conventional electric pick is reduced, and the defect that an eccentric shaft bearing is subjected to large impact force in the impact process of a drill bit is overcome.
Preferably, the impact mechanism includes a cylinder and a hammer, the hammer is disposed in the cylinder, the hammer can move back and forth along the axial direction of the cylinder, and the permanent magnet is fixed to one end of the hammer facing the electromagnetic driving mechanism. Through the structure, under the action of the electromagnetic driving mechanism, the impact hammer can move back and forth along the axial direction of the cylinder, and then the working head is driven to reciprocate along a straight line, so that the normal work of the working head is realized.
Preferably, the permanent magnet is sprayed on the punch hammer. The permanent magnet is fixed at the end part of the impact hammer in a spraying mode, so that on one hand, the space is saved, and the electric pick is more miniaturized and lighter; on the other hand, the spray-coating type has few parts, and the permanent magnet and the impact hammer are not required to be installed together by other parts.
Preferably, the electromagnetic driving mechanism includes at least one electromagnet, the electromagnet includes an iron core and a winding coil, the winding coil is wound on the outer circumferential surface of the iron core, one end of the iron core is arranged opposite to the end of the permanent magnet, and the direction of the magnetic pole of the electromagnet is changed by changing the direction of the current in the winding coil. When current passes through the winding coil, a uniform magnetic field is generated in a channel surrounded by the winding coil. After the iron core is inserted into the channel surrounded by the winding coil, the iron core is magnetized by the magnetic field generated by the winding coil. The magnetized iron core also becomes a magnet, and the two magnetic fields are mutually superposed, so that the magnetism of the whole electromagnet is greatly enhanced. The direction of the magnetic pole of the electromagnet is changed by controlling the direction of current in the winding coil, so that the direction of the magnetic pole of the electromagnet and the direction of the magnetic pole of the permanent magnet are switched between the homopolar pole and the heteropolar pole, the force generated between the electromagnet and the permanent magnet is switched between repulsion force and attraction force, the movement direction of the permanent magnet is switched between the directions far away from and close to the electromagnet, and the impact hammer moves back and forth along the axis direction of the cylinder. The electric pick has the advantages that the electromagnet and the permanent magnet are matched, the structure is simple, parts are few, the driving of the electric pick without the traditional stator and rotor motor is realized, the size and the weight of the electric pick are reduced, the electric pick can be suitable for a narrow operation space, and the use comfort is improved.
Preferably, the electromagnetic driving mechanism further comprises a controller, the controller is electrically connected with two ends of the winding coil and forms a loop, and the controller controls the current direction so that the current in the winding coil changes direction. The current in the winding coil is controlled by the controller to change the direction, so that the change of the magnetic pole direction of the winding coil is realized, the change of the magnetic pole direction of the electromagnet is realized, the permanent magnet is driven to do reciprocating linear motion, and the reciprocating movement of the impact hammer is realized.
Preferably, the electric pick without the conventional stator and rotor motors further comprises a switch on-off device, and the switch on-off device is electrically connected with the electromagnetic driving mechanism. The opening and closing of the electromagnetic driving mechanism are controlled through the switch on-off device, when the electromagnetic driving mechanism is opened, current passes through the winding coil and generates a magnetic field, and the permanent magnet starts to do reciprocating linear motion; when the electromagnetic driving mechanism is closed, no current passes through the winding coil, the magnetic field in the electromagnet disappears, the permanent magnet stops, and the impact mechanism does not move back and forth any more.
Preferably, the controller may convert the input ac power into dc power. If alternating current is directly adopted, the magnetism of an electromagnet in the electromagnetic driving mechanism is unstable, and the normal operation of the permanent magnet cannot be ensured. The alternating current is converted into the direct current, and then the current direction is changed in a certain period, so that the magnetic stability of the electromagnet can be ensured, and the moving stability of the permanent magnet is further ensured. Preferably, the frequency of change of the direction of current in the winding coil is adjustable. The impact frequency of the impact mechanism can be changed by changing the change frequency of the current direction in the winding coil, and then different working frequencies can be selected and used according to different working conditions.
Preferably, the frequency of the change of the current direction is between 1000 and 10000 times/min.
Preferably, the electric pick further comprises a casing, the cylinder is fixed in the casing, and the electromagnetic driving mechanism is fixed in the casing or in the cylinder. The electromagnetic driving mechanism can be fixed in the shell or in the cylinder, and the electromagnetic driving mechanism and the impact mechanism are integrated in the cylinder at the same time, so that the integration of the electric pick is improved, and the assembly is facilitated. On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: the utility model discloses a no tradition decide, rotor motor's electric pick, through the cooperation of electromagnetic drive mechanism and permanent magnet, realize the straight reciprocating motion of impact mechanism. The electric pick is not required to be provided with a traditional motor with a rotor and a stator to drive the impact mechanism, and the electric pick can be operated under the condition without the traditional motor. After the traditional motor is omitted in the electric pick, the weight of the machine body can be reduced, and the use comfort of a user can be further improved. The motor is not required to be cooled by a cooling fan without the traditional motor drive, so that the noise caused by the rotation of the fan is avoided, and the phenomena of vibration, unbalance and the like caused by the rotation of the fan, the rotor and the like are avoided, and the use comfort of a user is improved. Compared with the traditional motor drive, the electric pick is driven by the electromagnetic drive mechanism, so that the intermediate transmission (an eccentric wheel shaft drives a crank connecting rod mechanism) in the conventional electric pick is reduced, and the defect that an eccentric shaft bearing is subjected to large impact force in the impact process of a drill bit is overcome.
Drawings
Fig. 1 is a schematic diagram of a simple structure of an electric pick without a conventional stator and rotor motor according to a preferred embodiment of the present invention.
Description of reference numerals:
Impact hammer 30
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1, the present embodiment provides an electric pick without a conventional stator and rotor motor, which includes an impact mechanism, a permanent magnet 40 and an electromagnetic driving mechanism 10. Wherein, the permanent magnet 40 is fixed on the impact mechanism; the magnetic poles on the electromagnetic driving mechanism 10 are arranged opposite to the permanent magnets 40, the polarity of the magnetic poles of the electromagnetic driving mechanism 10 is changed periodically, and the impact mechanism moves towards the direction close to or away from the magnetic poles along with the change of the polarity of the magnetic poles, so that the impact mechanism does reciprocating linear motion.
The polarity of the magnetic pole of the electromagnetic driving mechanism 10 is changed to be the same as or different from the polarity of the permanent magnet 40, so that when the polarity of the magnetic pole of the electromagnetic driving mechanism 10 is the same as the polarity of the permanent magnet 40, the electromagnetic driving mechanism 10 generates repulsion to the permanent magnet 40, and the permanent magnet 40 moves away from the electromagnetic driving mechanism 10; when the polarity of the magnetic pole of the electromagnetic drive mechanism 10 is different from the polarity of the permanent magnet 40, the electromagnetic drive mechanism 10 generates an attractive force to the permanent magnet 40, so that the permanent magnet 40 moves in a direction approaching the electromagnetic drive mechanism 10. The permanent magnet 40 is fixed with the impact mechanism, the end part of the impact mechanism can be driven by the permanent magnet 40 to move towards or away from the electromagnetic driving mechanism 10 in the moving process, and the other end of the impact mechanism is driven by the end of the impact mechanism facing the permanent magnet 40 to move back and forth.
Through the structure and the principle, the traditional motor with the rotor and the stator does not need to be arranged in the electric pick to drive the impact mechanism, and the electric pick can be operated under the condition without the traditional motor. After the traditional motor is omitted in the electric pick, the weight of the machine body can be reduced, and the use comfort of a user can be further improved. The motor is not required to be cooled by a cooling fan without the traditional motor drive, so that the noise caused by the rotation of the fan is avoided, and the phenomena of vibration, unbalance and the like caused by the rotation of the fan, the rotor and the like are avoided, and the use comfort of a user is improved. Compared with the traditional motor drive, the electromagnetic drive mechanism 10 is adopted to drive the electric pick, so that the intermediate transmission (an eccentric wheel shaft drives a crank connecting rod mechanism) in the conventional electric pick is reduced, and the defect that an eccentric shaft bearing is subjected to large impact force in the impact process of a drill bit is overcome.
In the present embodiment, the impact mechanism includes the cylinder 50 and the hammer 30, the hammer 30 is provided in the cylinder 50, the hammer 30 is movable back and forth along the axial direction of the cylinder 50, and the permanent magnet 40 is fixed to an end of the hammer 30 facing the electromagnetic drive mechanism 10. With the above configuration, the hammer 30 can be moved back and forth in the axial direction of the cylinder 50 by the electromagnetic drive mechanism 10. The working head is detachably assembled at one end of the hammer 30, which is far away from the electromagnetic driving mechanism 10, and when the hammer 30 moves back and forth along the axial direction of the cylinder 50 under the action force of the electromagnetic driving mechanism 10, the working head is driven to reciprocate along a straight line, so that the normal work of the working head is realized.
The fixing manner of the permanent magnet 40 and the hammer 30 is not limited, and may be a fixing by a mechanical structure, such as a bolt or a welding form. In the present embodiment, the permanent magnet 40 is sprayed on the hammer 30. The permanent magnet 40 is fixed at the end of the impact hammer 30 in a spraying manner, so that on one hand, the space is saved, and the electric pick is further miniaturized and lightened; on the other hand, the spray-coating method has few parts, and the permanent magnet 40 and the hammer 30 do not need to be mounted together by other parts.
One of the N pole or S pole of the permanent magnet 40 fixed to the hammer 30 is disposed opposite to the electromagnetic driving mechanism 10. For example, the N pole of the permanent magnet 40 is arranged opposite to the electromagnetic driving mechanism 10, and by changing the polarity of the electromagnetic driving mechanism 10, when the polarity of the end of the permanent magnet 40 opposite to the N pole of the permanent magnet 40 is the N pole, the electromagnet generates a repulsive force to the permanent magnet 40, so that the permanent magnet 40 moves in a direction away from the end of the electromagnet; conversely, when the polarity of the end of the electromagnet opposite to the N pole of the permanent magnet 40 is changed to the S pole, the electromagnet generates an attraction force to the permanent magnet 40, so that the hammer 30 moves in a direction to approach the electromagnet. By constantly changing the polarity of the electromagnet, the ram 30 causes the working head to reciprocate along the axial direction of the cylinder 50.
The electromagnetic driving mechanism 10 includes at least one electromagnet, and the electromagnet includes an iron core 20 and a winding coil, the winding coil is wound on the outer circumferential surface of the iron core 20, one end of the iron core 20 is arranged opposite to the end of the permanent magnet 40, and the direction of the magnetic pole of the electromagnet is changed by changing the direction of the current in the winding coil. When current passes through the winding coil, a uniform magnetic field is generated in a channel surrounded by the winding coil. After the core 20 is inserted into the passage defined by the winding coil, the core 20 is magnetized by the magnetic field generated by the winding coil. The magnetized iron core 20 also becomes a magnet, and the two magnetic fields are superposed with each other, so that the magnetism of the whole electromagnet is greatly enhanced. The direction of the magnetic pole of the electromagnet is changed by controlling the direction of the current in the winding coil, so that the direction of the magnetic pole of the electromagnet and the direction of the magnetic pole of the permanent magnet 40 are switched between the homopolar and the heteropolar, the force generated between the electromagnet and the permanent magnet 40 is switched between the repulsive force and the attractive force, the movement direction of the permanent magnet 40 is switched between the directions far away from and close to the electromagnet, and the impact hammer 30 moves back and forth along the axial direction of the cylinder 50. The electric pick adopts the cooperation of the electromagnet and the permanent magnet 40, has simple structure and few parts, realizes the driving of the traditional stator and rotor motor without the electric pick, and reduces the size and the weight of the electric pick, thereby ensuring that the electric pick can be applicable to a narrower operation space and simultaneously improving the use comfort.
Further, the electromagnetic driving mechanism 10 further includes a controller electrically connected to both ends of the winding coil and forming a loop, and the controller controls the direction of the current so that the current in the winding coil changes direction. The direction of the current in the winding coil is controlled by the controller to change the direction of the magnetic pole of the winding coil, so that the direction of the magnetic pole of the electromagnet is changed to drive the permanent magnet 40 to do reciprocating linear motion, and the impact hammer 30 moves back and forth. The electric pick without the traditional stator and rotor motors further comprises a switch on-off device which is electrically connected with the electromagnetic driving mechanism 10. The opening and closing of the electromagnetic driving mechanism 10 are controlled through the switch on-off device, when the electromagnetic driving mechanism 10 is opened, current passes through a winding coil and generates a magnetic field, and the permanent magnet 40 starts to do reciprocating linear motion; when the electromagnetic drive mechanism 10 is switched off, no current flows through the winding coil, the magnetic field in the electromagnet disappears, the permanent magnet 40 stops, and the impact mechanism does not move back and forth. The controller may convert the input ac power to dc power. If alternating current is directly used, the magnetism of the electromagnet in the electromagnetic driving mechanism 10 is unstable, and thus the normal operation of the permanent magnet 40 cannot be ensured. The alternating current is converted into the direct current, and then the current direction is changed in a certain period, so that the magnetic stability of the electromagnet can be ensured, and the moving stability of the permanent magnet 40 is further ensured. The frequency of the change of the direction of the current in the winding coil is adjustable. The impact frequency of the impact mechanism can be changed by changing the change frequency of the current direction in the winding coil, and then different working frequencies can be selected and used according to different working conditions. The frequency of the change of the current direction is preferably between 1000 and 10000 times/min.
In the present embodiment, the electric pick further includes a housing 60, the air cylinder 50 is fixed in the housing 60, and the electromagnetic driving mechanism 10 is fixed in the housing 60 or in the air cylinder 50. The electromagnetic driving mechanism 10 can be fixed in the casing 60 or in the cylinder 50, and the electromagnetic driving mechanism 10 and the impact mechanism are simultaneously integrated in the cylinder 50, which is beneficial to improving the integration of the electric pick and is further convenient for assembly.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. The utility model provides a do not have electric pick of tradition stator, rotor motor which characterized in that, it includes:
an impact mechanism;
the permanent magnet is fixed on the impact mechanism;
the magnetic pole of the electromagnetic driving mechanism is opposite to the permanent magnet, the polarity of the magnetic pole of the electromagnetic driving mechanism is changed periodically, and the impact mechanism moves towards the direction close to or far away from the magnetic pole along with the change of the polarity of the magnetic pole so as to realize the reciprocating linear motion of the impact mechanism.
2. The electric pick without a conventional stator or rotor motor as claimed in claim 1, wherein said impact mechanism includes a cylinder and a hammer disposed in said cylinder, said hammer being movable back and forth along an axial direction of said cylinder, said permanent magnet being fixed to an end of said hammer facing said electromagnetic driving mechanism.
3. The electric pick without the conventional stator and rotor motor of claim 2, wherein said permanent magnet is sprayed on said hammer.
4. The electric pick without a conventional stator or rotor motor as claimed in claim 1, wherein said electromagnetic driving mechanism includes at least one electromagnet, said electromagnet includes an iron core and a winding coil, said winding coil is wound on an outer circumferential surface of said iron core, one end of said iron core is disposed opposite to an end of said permanent magnet, and a direction of a magnetic pole of said electromagnet is changed by changing a direction of a current in said winding coil.
5. The electric pick without a conventional stator or rotor motor as claimed in claim 4, wherein said electromagnetic driving mechanism further includes a controller electrically connected to both ends of said winding coil and forming a loop, said controller controlling the direction of current flow so that the current flow in said winding coil changes direction.
6. The electric pick without a conventional stator or rotor motor as claimed in claim 5, wherein said electric pick without a conventional stator or rotor motor further comprises a switch on/off device electrically connected to said electromagnetic driving mechanism.
7. The electric pick without a conventional stator or rotor motor as claimed in claim 6, wherein said controller converts the input ac power to dc power.
8. The electric pick without a conventional stator or rotor motor as claimed in claim 6, wherein the frequency of change of the direction of current in said winding coil is adjustable.
9. The electric pick without a conventional stator and rotor motor as claimed in claim 8, wherein said frequency of change of current direction is between 1000 and 10000 times/min.
10. The electric pick without a conventional stator or rotor motor as claimed in claim 2, wherein said electric pick without a conventional stator or rotor motor further comprises a housing, said cylinder is fixed in said housing, and said electromagnetic driving mechanism is fixed in said housing or in said cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225077.0U CN215186394U (en) | 2021-06-02 | 2021-06-02 | Electric pick without traditional stator and rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121225077.0U CN215186394U (en) | 2021-06-02 | 2021-06-02 | Electric pick without traditional stator and rotor motor |
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| Publication Number | Publication Date |
|---|---|
| CN215186394U true CN215186394U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121225077.0U Active CN215186394U (en) | 2021-06-02 | 2021-06-02 | Electric pick without traditional stator and rotor motor |
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| CN (1) | CN215186394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345234A (en) * | 2022-01-10 | 2022-04-15 | 北京航空航天大学 | Droplet generator based on water hammer effect and working method thereof |
-
2021
- 2021-06-02 CN CN202121225077.0U patent/CN215186394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345234A (en) * | 2022-01-10 | 2022-04-15 | 北京航空航天大学 | Droplet generator based on water hammer effect and working method thereof |
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