Linear motor structure with power-off anti-falling function

Abstract

The utility model discloses a linear motor structure with a power-off anti-falling function, which belongs to the technical field of motor equipment and comprises a motor main body and a magnetic shaft, the motor main body is of a hollow structure, the magnetic shaft is positioned in the motor main body, the motor main body comprises a motor shell and a plurality of turns of coil windings, and the coil windings are arranged in the motor shell. The multi-turn coil winding is arranged in the motor shell, the magnetic shaft comprises a magnetic shaft outer sleeve and magnetic steel, the magnetic shaft outer sleeve is arranged in the motor shell, and the magnetic steel is arranged in the magnetic shaft outer sleeve; the linear motor further comprises an anti-falling assembly, the anti-falling assembly is installed between the motor body and the magnetic shaft, the anti-falling assembly is used for preventing the motor body or the magnetic shaft from falling off after power failure when the linear motor is vertically used, the technical scheme is simple and ingenious in structure, normal operation of the motor is not affected, and meanwhile power-off protection is achieved for the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a linear motor structure with power-off anti-drop function. Background Art

[0002] A linear motor is a device that converts electrical energy directly into mechanical energy. The main body and the magnetic axis of the linear motor make relative linear motion, and the two parts are relatively independent. In some vertical use scenarios, when power is lost or the enable is lost, the main body or magnetic axis that is not fixed will fall out of the other part and cause damage. Therefore, it is very necessary to set a power-off anti-drop structure on the vertically used linear motor. Utility Model Content

[0003] In response to the above technical problems, the technical solution adopted by the utility model is: a linear motor structure with power-off anti-drop function, including a motor body and a magnetic axis, the motor body is a hollow structure, the magnetic axis is located inside the motor body, the motor body includes a motor housing and a coil winding, the coil winding is provided with multiple turns, and the multi-turn coil winding is arranged inside the motor housing, the magnetic axis includes a magnetic axis jacket and a magnet, the magnetic axis jacket is arranged inside the motor housing, and multiple magnets are arranged inside the magnetic axis jacket.

[0004] It also includes an anti-drop component, which is installed between the motor body and the magnetic shaft. The anti-drop component is used to prevent the motor body or the magnetic shaft from falling after power failure when the linear motor is used vertically.

[0005] Furthermore, the anti-drop assembly includes a first mounting plate and a limit spring, the first mounting plate is mounted on the end face of the magnetic shaft, and a limit spring coaxial with the magnetic shaft is arranged between the first mounting plate and the end face of the motor housing.

[0006] Furthermore, the anti-drop assembly includes a first part and a second part, which are respectively mounted on the motor body and the magnetic shaft. The first part prevents the falling by limiting the movement of the second part inside the first part when the power is off.

[0007] Furthermore, the first part includes two arc plates, which are fixedly installed on the outer side of the magnetic shaft sleeve by bolts and nuts, and end plates are provided on both sides of the arc plates, and guide rods are fixedly installed on the end plates. Limiting plates are provided at the ends of the guide rods, and sliding plates are slidably installed on the two guide rods located on one side of the motor housing. A return spring coaxial with the guide rod is provided between the sliding plate and the limiting plate, and the second part is located between the sliding plate and the end plate, and the sliding plate slides toward the direction close to the end plate to limit the movement of the second part.

[0008] Furthermore, a permanent magnet is fixedly mounted on the end plate, and an electromagnet is fixedly mounted on the surface of the sliding plate close to the end plate. The electromagnet and the linear motor share the same power supply circuit. After the electromagnet is powered on, the magnetic poles magnetized on one surface close to the permanent magnet are the same as the magnetic poles on one side of the permanent magnet close to it.

[0009] Furthermore, the second part includes a second mounting plate, which is fixedly mounted on the end face of the motor body. Two support rods are arranged on the second mounting plate. A vertical rod is fixedly mounted on the surface of the support rod close to the first part. The vertical rod is located between the end plate and the sliding plate. A plurality of baffle rods are arranged on the outer sides of the two vertical rods. The baffle rods cooperate with the sliding plate to fix the second part.

[0010] Furthermore, a threaded hole is provided at the end of the magnetic shaft sleeve, and the first mounting plate or the second mounting plate is mounted on the end of the magnetic shaft sleeve by means of screws.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The technical solution in Example 1 of the present invention has a simple structure, is easy to install, has high reliability, and can effectively prevent damage to the motor; (2) In the technical solution in Example 2 of the present invention, the first part and the second part of the anti-drop assembly do not contact each other when the motor is operating normally, thereby avoiding the situation in which the technical solution in Example 1 applies additional force to the motor during the anti-drop process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0013] Figure 2 It is a cross-sectional view of Example 1 of the utility model.

[0014] Figure 3 This is a schematic diagram of the overall structure of Example 2 of the utility model.

[0015] Figure 4 This is a schematic structural diagram of the first part of Example 2 of the utility model.

[0016] Figure 5 for Figure 4 A local enlarged schematic diagram of point A in the middle.

[0017] Figure 6 This is a partial structural diagram of Example 2 of the utility model.

[0018] Figure numbers: 1-motor body; 101-motor housing; 102-coil winding; 2-magnetic axis; 201-magnetic axis jacket; 202-magnet; 301-first mounting plate; 302-limiting spring; 401-second mounting plate; 402-support rod; 403-vertical rod; 404-blocking rod; 405-arc plate; 406-bolt; 407-end plate; 408-guide rod; 409-sliding plate; 410-limiting plate; 411-reset spring; 412-electromagnet; 413-permanent magnet. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0020] Example: Reference Figure 1-Figure 6 As shown, a linear motor structure with power-off anti-drop function includes a motor body 1 and a magnetic shaft 2, the motor body 1 is a hollow structure, the magnetic shaft 2 is located inside the motor body 1, the motor body 1 includes a motor housing 101 and a coil winding 102, the coil winding 102 is provided with multiple turns, the multi-turn coil winding 102 is arranged inside the motor housing 101, the magnetic shaft 2 includes a magnetic shaft jacket 201 and a magnetic steel 202, the magnetic shaft jacket 201 is arranged inside the motor housing 101, and multiple magnetic steels 202 are arranged inside the magnetic shaft jacket 201; it also includes an anti-drop component, the anti-drop component is installed between the motor body 1 and the magnetic shaft 2, the anti-drop component is used to prevent the motor body 1 or the magnetic shaft 2 from falling after power is off when the linear motor is used vertically.

[0021] Embodiment 1: The anti-drop assembly includes a first mounting plate 301 and a limit spring 302. The first mounting plate 301 is mounted on the end of the magnetic shaft sleeve 201 by screws. A limit spring 302 coaxial with the magnetic shaft 2 is arranged between the first mounting plate 301 and the end surface of the motor housing 101. When in use, the motor body 1 and the magnetic shaft 2 are placed vertically. Figure 1 The state shown in the figure is that the motor body 1 is fixedly installed on the ground or a workbench, and the magnetic shaft 2 makes reciprocating linear motion inside the motor body 1. When the power is off or the enable is removed, the limit spring 302 is located between the first mounting plate 301 and the motor body 1 at this time, which can prevent the magnetic shaft 2 from falling from the inside of the motor body 1.

[0022] The installation state of this embodiment can also be: the motor body 1 is located above the magnetic axis 2, the magnetic axis 2 is fixedly installed on the ground or a workbench, and the motor body 1 performs reciprocating linear motion on the magnetic axis 2. At this time, the limit spring 302 is installed between the lower end face of the magnetic axis sleeve 201 and the end face of the motor housing 101.

[0023] Embodiment 2: The anti-drop assembly includes a first part and a second part, which are respectively mounted on the motor body 1 and the magnetic shaft 2. The first part prevents the falling by limiting the movement of the second part inside the first part when the power is off.

[0024] The first part includes two arc plates 405, which are fixedly installed on the outer side of the magnetic shaft sleeve 201 by bolts 406 and nuts. End plates 407 are arranged on both sides of the arc plates 405, and guide rods 408 are fixedly installed on the end plates 407. Limiting plates 410 are arranged at the ends of the guide rods 408. Sliding plates 409 are slidably installed on the two guide rods 408 located on one side of the motor housing 101, and a return spring 411 coaxial with the guide rods 408 is arranged between the sliding plate 409 and the limiting plate 410. The second part is located between the sliding plate 409 and the end plate 407, and the sliding plate 409 slides in a direction close to the end plate 407 to limit the movement of the second part.

[0025] A permanent magnet 413 is fixedly mounted on the end plate 407, and an electromagnet 412 is fixedly mounted on the surface of the sliding plate 409 close to the end plate 407. The electromagnet 412 and the linear motor share the same power supply circuit. After the electromagnet 412 is powered on, the magnetic poles magnetized on one surface close to the permanent magnet 413 are the same as the magnetic poles on one side of the permanent magnet 413 close to it.

[0026] The second part includes a second mounting plate 401, which is mounted on the end of the magnetic shaft sleeve 201 by screws. Two support rods 402 are arranged on the second mounting plate 401. A vertical rod 403 is fixedly installed on the surface of the support rod 402 close to the first part. The vertical rod 403 is located between the end plate 407 and the sliding plate 409. A plurality of blocking rods 404 are arranged on the outer parts of the two vertical rods 403. The blocking rods 404 cooperate with the sliding plate 409 to fix the second part.

[0027] The working principle of the anti-drop assembly in this embodiment is: when the motor body 1 needs to move, the magnetic axis 2 is fixedly installed on the ground or a workbench; when the magnetic axis 2 needs to move, the motor body 1 is fixedly installed on the ground or a workbench; during normal use, the electromagnet 412 is powered on, and the magnetic poles of the two surfaces of the electromagnet 412 and the permanent magnet 413 that are close to each other are the same. According to the principle that like poles repel each other, the sliding plate 409 is located away from the end plate 407 at this time, and the reset spring 411 is compressed at this time. At this time, the second part moves between the end plate 407 and the sliding plate 409, and the electromagnet 412 and the linear motor Sharing a power supply circuit, when the power is suddenly cut off, the magnetism on the electromagnet 412 disappears. Since the material of the electromagnet 412 itself can be attracted by the magnet, the sliding plate 409 moves to a position close to the end plate 407. At this time, the sliding plate 409 is used to clamp the blocking rod 404 on the vertical rod 403 to prevent the magnetic axis 2 from falling from the motor body 1. The control circuit of the electromagnet 412 can also control the power-off and power-on states of the electromagnet 412 by detecting the enable signal of the linear motor. When the linear motor loses the enable signal, the electromagnet 412 loses power to prevent the relative movement between the first part and the second part.

Claims

1. A linear motor structure with power-off anti-drop function, characterized in that: The invention comprises a motor body (1) and a magnetic axis (2), wherein the motor body (1) is a hollow structure, and the magnetic axis (2) is located inside the motor body (1); the motor body (1) comprises a motor housing (101) and a coil winding (102), wherein the coil winding (102) is provided with a plurality of turns, and the multi-turn coil winding (102) is arranged inside the motor housing (101); the magnetic axis (2) comprises a magnetic axis jacket (201) and magnetic steel (202), wherein the magnetic axis jacket (201) is arranged inside the motor housing (101), and the plurality of magnetic steels (202) are arranged inside the magnetic axis jacket (201); It also includes an anti-drop component, which is installed between the motor body (1) and the magnetic shaft (2). The anti-drop component is used to prevent the motor body (1) or the magnetic shaft (2) from falling after power is cut off when the linear motor is used vertically.

2. A linear motor structure with power-off anti-drop function according to claim 1, characterized in that: The anti-drop assembly comprises a first mounting plate (301) and a limit spring (302); the first mounting plate (301) is mounted on the end face of the magnetic axis (2); and a limit spring (302) coaxial with the magnetic axis (2) is provided between the first mounting plate (301) and the end face of the motor housing (101).

3. The linear motor structure with power-off anti-drop function according to claim 1, characterized in that: The anti-drop assembly comprises a first part and a second part, wherein the first part and the second part are mounted on the motor body (1) and the magnetic shaft (2) respectively, and the first part prevents the second part from dropping by limiting the movement of the second part inside the first part when power is off.

4. The linear motor structure with power-off anti-drop function according to claim 3, characterized in that: The first part comprises two arc plates (405), the two arc plates (405) are fixedly mounted on the outer side of the magnetic shaft sleeve (201) by means of bolts (406) and nuts, end plates (407) are arranged on both sides of the arc plates (405), guide rods (408) are fixedly mounted on the end plates (407), and limit plates (410) are arranged at the ends of the guide rods (408), sliding plates (409) are slidably mounted on the two guide rods (408) located on one side of the motor housing (101), and a return spring (411) coaxial with the guide rods (408) is arranged between the sliding plate (409) and the limit plate (410), and the second part is located between the sliding plate (409) and the end plate (407), and the sliding plate (409) slides in a direction close to the end plate (407) to limit the movement of the second part.

5. The linear motor structure with power-off anti-drop function according to claim 4, characterized in that: A permanent magnet (413) is fixedly mounted on the end plate (407), and an electromagnet (412) is fixedly mounted on the surface of the sliding plate (409) close to the end plate (407). The electromagnet (412) and the linear motor share the same power supply circuit. After the electromagnet (412) is powered on, the magnetic poles magnetized on one surface close to the permanent magnet (413) are the same as the magnetic poles on one side of the permanent magnet (413) close to it.

6. The linear motor structure with power-off anti-drop function according to claim 4, characterized in that: The second part comprises a second mounting plate (401), the second mounting plate (401) being fixedly mounted on the end surface of the motor body (1), two support rods (402) being arranged on the second mounting plate (401), a vertical rod (403) being fixedly mounted on the surface of the support rod (402) close to the first part, the vertical rod (403) being located between the end plate (407) and the sliding plate (409), a plurality of blocking rods (404) being arranged on the outer side of the two vertical rods (403), the blocking rods (404) cooperating with the sliding plate (409) to fix the second part.

7. A linear motor structure with power-off protection against falling according to any one of claims 2 or 6, characterized in that: The end of the magnetic shaft sleeve (201) is provided with a threaded hole, and the first mounting plate (301) or the second mounting plate (401) is mounted on the end of the magnetic shaft sleeve (201) by means of screws.

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