阅读说明：本技术 推动器和制动器 (Pusher and brake ) 是由 刘晓 肖罗鹏 崔鹤松 黄守道 于 2020-06-22 设计创作，主要内容包括：本发明涉及制动设备,具体公开了一种推动器,包括导向装置、驱动装置、磁力丝杠和推杆,所述磁力丝杠和导向装置容置于壳体中；所述磁力丝杠包括磁力丝杆和磁力螺母,所述磁力螺母同轴套设于所述磁力丝杆上,且二者之间具有气隙；所述驱动装置与所述磁力丝杆固定连接,所述推杆的一端与所述磁力螺母固定连接,另一端伸出于所述壳体；所述驱动装置适于驱动所述磁力丝杆转动,以通过磁耦合力带动所述磁力螺母沿磁力丝杆来回移动,并通过所述导向装置限制其移动轨迹。此外,本发明还涉及一种制动器。本发明的推动器结构简单,利用磁力传动实现隔离传动。(The invention relates to braking equipment, and particularly discloses a pusher which comprises a guide device, a driving device, a magnetic lead screw and a push rod, wherein the magnetic lead screw and the guide device are accommodated in a shell; the magnetic screw rod comprises a magnetic screw rod and a magnetic nut, the magnetic nut is coaxially sleeved on the magnetic screw rod, and an air gap is formed between the magnetic screw rod and the magnetic nut; the driving device is fixedly connected with the magnetic lead screw, one end of the push rod is fixedly connected with the magnetic nut, and the other end of the push rod extends out of the shell; the driving device is suitable for driving the magnetic screw rod to rotate so as to drive the magnetic nut to move back and forth along the magnetic screw rod through magnetic coupling force, and the moving track of the magnetic nut is limited through the guiding device. The invention further relates to a brake. The pusher has simple structure and realizes isolated transmission by utilizing magnetic transmission.)

1. The pusher is characterized by comprising a guide device, a driving device (1), a magnetic lead screw (4) and a push rod (2), wherein the magnetic lead screw (4) and the guide device are accommodated in a shell (3); the magnetic lead screw (4) comprises a magnetic lead screw (41) and a magnetic nut (42), the magnetic nut (42) is coaxially sleeved on the magnetic lead screw (41), and an air gap is formed between the magnetic lead screw and the magnetic nut; the driving device (1) is fixedly connected with the magnetic lead screw (41), one end of the push rod (2) is fixedly connected with the magnetic nut (42), and the other end of the push rod extends out of the shell (3); the driving device (1) is suitable for driving the magnetic screw rod (41) to rotate, so that the magnetic coupling force drives the magnetic nut (42) to move back and forth along the magnetic screw rod (41), and the moving track of the magnetic nut is limited by the guiding device.

2. The pusher according to claim 1, characterized in that the magnetic screw (41) comprises a screw core, the outer surface of the screw core is provided with a plurality of radially-charged spiral permanent magnets which are alternately arranged in N-stage and S-stage to form N, S-pole alternating spiral magnetic field; the magnetic nut (42) comprises a nut iron core, and the inner surface of the nut iron core is provided with a plurality of radial magnetized spiral permanent magnets which are alternately arranged in N-level and S-level.

3. The pusher according to claim 2, wherein the screw core is a hollow cylindrical electrical iron pipe or a solid cylindrical electrical iron rod, and the nut core is a hollow annular electrical iron ring.

4. The pusher according to claim 1, characterized in that the driving means (1) is a servo motor, the output shaft of which is connected with the magnetic screw (41) to drive the magnetic screw (41) in rotation.

5. The pusher according to claim 1, wherein the guiding means comprises a supporting seat (51) and a guiding rail (52), the supporting seat (51) is disposed on the top surface and the bottom surface of the inner cavity of the housing (3), the guiding rail (52) is disposed between the two supporting seats (51), and the screw nut (42) is provided with a guiding sliding groove which is matched with the guiding rail (52).

6. The pusher according to claim 1, characterized in that the upper end of the housing (3) is provided with a through hole through which the push rod (2) protrudes from the housing (3), the through hole being in clearance fit with the push rod (2).

7. A brake, characterized by comprising a base, a left brake arm (61), a right brake arm (62), a driving member (63) and the pusher of any one of claims 1 to 6, wherein the left brake arm (61) and the right brake arm (62) are provided with opposite brake shoes (64), one ends of the left brake arm (61) and the right brake arm (62) are hinged on the base, a first end of the driving member (63) is connected with the other end of the left brake arm (61) through a connecting arm (65), a second end is connected with the other end of the right brake arm (62), a third end is connected with a push rod (2) of the pusher, and the push rod (2) moves back and forth to drive the left brake arm (61) and the right brake arm (62) to be clasped or loosened.