Stepless adjustment direct drive motor

Abstract

The utility model discloses a stepless adjustment direct-drive motor, relates to the technical field of direct-drive motors, and aims to solve the technical problems that abrasion is easily generated between a rotor and a guide structure in the prior art, and dust and other impurities in the environment easily enter a gap between the rotor and the guide structure, so that the moving stability of the rotor is reduced. Comprising a motor assembly, the motor assembly comprises a U-shaped mounting seat, a linear motor shell is fixedly mounted in the U-shaped mounting seat, a motor cover is detachably mounted at the top of the linear motor shell, a rotor is arranged at the top of the motor cover in a sliding fit mode, a toothed belt is fixedly mounted on one side of the U-shaped mounting seat, and guide assemblies are symmetrically and fixedly mounted on one side of the rotor; the guide assembly comprises U-shaped plates which are symmetrically arranged and fixedly installed on one side of the rotor, a rotating shaft is rotatably installed between the U-shaped plates, torsional springs are arranged between the two ends of the rotating shaft and the U-shaped plates, and an arc-shaped connecting plate is arranged on the outer edge face of the rotating shaft. The utility model has the advantage of guaranteeing the sliding stability of the rotor.

Description

Technical Field

[0001] The utility model relates to the technical field of direct drive motors, and more specifically, to a direct drive motor with stepless adjustment. Background Technique

[0002] A linear motor, also known as a direct drive motor, a linear motor, a linear motor, a linear motor, a push rod motor, etc., is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. It can be regarded as a rotating motor cut radially and unfolded into a plane. The main types of linear motors include flat type, U-groove type, tubular type, etc., and they are widely used in fields such as maglev trains, wheel-rail trains, elevators, electromagnetic launches, etc., as well as the drives of servo systems for machine tools, airplanes, automobiles, etc.

[0003] At present, when a linear motor is in use, compared with a traditional servo motor, it cannot be installed with a rotary encoder. Therefore, it usually installs a grating ruler on the side to achieve real-time feedback of the position. The grating ruler of the existing linear motor is generally installed on the mover, and a linear guiding structure is arranged between the mover and the body of the linear motor to ensure the stability of the mover's movement. However, during long-term use, wear is likely to occur between the mover and the guiding structure, and dust and other impurities in the environment are likely to enter the gap between the mover and the guiding structure, thereby reducing the stability of the mover's movement and affecting the use. In view of this, we propose a direct drive motor with stepless adjustment. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a direct drive motor with stepless adjustment to solve the technical problems that wear is likely to occur between the existing mover and the guiding structure, and dust and other impurities in the environment are likely to enter the gap between the mover and the guiding structure, thereby reducing the stability of the mover's movement.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A direct drive motor with stepless adjustment, including a motor assembly;

[0006] The motor assembly includes a U-shaped mounting seat with a linear motor housing fixedly installed inside, the top of the linear motor housing is detachably installed with a motor cover, the top of the motor cover is slidably fitted with a mover, one side of the U-shaped mounting seat is fixedly installed with a toothed belt, and a guiding assembly is symmetrically and fixedly installed on one side of the mover;

[0007] The guiding assembly includes U-shaped plates symmetrically arranged and fixedly installed on one side of the mover, a rotating shaft is rotatably installed between the U-shaped plates, torsion springs are arranged between the two ends of the rotating shaft and the U-shaped plates, and an arc-shaped connecting plate is constructed on the outer edge surface of the rotating shaft, and one end of the arc-shaped connecting plate far from the rotating shaft is fixedly connected with a guiding mechanism;

[0008] The guiding mechanism includes a gear that is rotatably arranged and meshes with the toothed belt.

[0009] In the utility model, by designing the guiding component, during the sliding process of the mover, it will drive the guiding component to slide synchronously, so that the gear meshes with the toothed belt and rotates. The meshing of the gear and the toothed belt is beneficial to improving the sliding stability of the mover. And under the torsional force of the torsion springs at both ends of the rotating shaft, the arc-shaped connecting plate pulls the gear to closely fit with the toothed belt, thereby further ensuring the sliding stability of the mover.

[0010] Preferably, the guiding mechanism further includes a rotating seat, and the gear is rotatably installed between the rotating seats.

[0011] Preferably, a connecting shaft is rotatably installed coaxially at the top of the rotating seat, a limiting plate is fixedly connected to the top of the connecting shaft, and one end of the arc-shaped connecting plate away from the rotating shaft is configured to be connected to the outer edge surface of the connecting shaft.

[0012] Preferably, a grid plate is fixedly installed on one side of the U-shaped mounting seat, and an absolute grating ruler is fixedly installed on the top of the mover.

[0013] Preferably, permanent magnets are fixedly arranged at equal intervals inside the linear motor housing, and fixing blocks are formed at the four corners of the upper end surface of the linear motor housing. A cable chain is arranged on one side of the U-shaped mounting seat.

[0014] Preferably, the four corners of the lower end surface of the motor cover are abutted against the fixing blocks, and fixing screws with one end that can be screwed into the fixing blocks are arranged at the four corners of the upper end surface of the motor cover.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] In the utility model, by designing the guiding component, during the sliding process of the mover, it will drive the guiding component to slide synchronously, so that the gear meshes with the toothed belt and rotates. The meshing of the gear and the toothed belt is beneficial to improving the sliding stability of the mover. And under the torsional force of the torsion springs at both ends of the rotating shaft, the arc-shaped connecting plate pulls the gear to closely fit with the toothed belt, thereby further ensuring the sliding stability of the mover, solving the problems that wear is likely to occur between the existing mover and the guiding structure, and dust and other impurities in the environment are likely to enter the gap between the mover and the guiding structure, thereby reducing the moving stability of the mover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic structural diagram of the motor assembly of the utility model;

[0019] Figure 3 Schematic diagram of the disassembly of the motor assembly of the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the guiding assembly of the present utility model;

[0021] Figure 5 For the present utility model Figure 1 Enlarged schematic diagram of the structure at position A in the present utility model.

[0022] Description of the reference numerals in the figure:

[0023] 1. Motor assembly; 101. U-shaped mounting seat; 102. Linear motor housing; 103. Fixed block; 104. Grid plate; 105. Motor cover; 106. Fixed screw; 107. Rotor; 108. Absolute grating ruler; 109. Cable chain; 110. Permanent magnet; 111. Tooth belt; 2. Guiding assembly; 201. Rotating seat; 202. Gear; 203. Connecting shaft; 204. Limiting plate; 205. Arc-shaped connecting plate; 206. U-shaped plate; 207. Rotating shaft. Detailed implementation manners

[0024] As Figures 1 - 5 shown, a direct drive motor with stepless adjustment related to the present utility model includes a motor assembly 1. The motor assembly 1 includes a U-shaped mounting seat 101 with a linear motor housing 102 fixedly installed inside. A motor cover 105 is detachably installed on the top of the linear motor housing 102. A rotor 107 is slidably fitted on the top of the motor cover 105. A tooth belt 111 is fixedly installed on one side of the U-shaped mounting seat 101. Two guiding assemblies 2 are symmetrically and fixedly installed on one side of the rotor 107. The guiding assembly 2 includes U-shaped plates 206 symmetrically arranged and fixedly installed on one side of the rotor 107. A rotating shaft 207 is rotatably installed between the U-shaped plates 206. A torsion spring is arranged between the two ends of the rotating shaft 207 and the U-shaped plates 206. An arc-shaped connecting plate 205 is constructed on the outer edge surface of the rotating shaft 207. One end of the arc-shaped connecting plate 205 away from the rotating shaft 207 is fixedly connected to a guiding mechanism. The guiding mechanism includes a gear 202 rotatably arranged and meshing with the tooth belt 111.

[0025] In the embodiment of the present utility model, the guiding mechanism further includes a rotating seat 201. The gear 202 is rotatably installed between the rotating seats 201. A connecting shaft 203 is rotatably installed coaxially on the top of the rotating seat 201. A limiting plate 204 is fixedly connected to the top of the connecting shaft 203. One end of the arc-shaped connecting plate 205 away from the rotating shaft 207 is constructed and connected to the outer edge surface of the connecting shaft 203.

[0026] In the embodiment of the present utility model, a grid plate 104 is fixedly installed on one side of the U-shaped mounting seat 101, and an absolute grating ruler 108 is fixedly installed on the top of the rotor 107.

[0027] In an embodiment of the present utility model, permanent magnets 110 are fixedly arranged at equal intervals inside the linear motor housing 102, and fixing blocks 103 are formed at the four corners of the upper end surface of the linear motor housing 102. A cable chain 109 is arranged on one side of the U-shaped mounting seat 101. The four corners of the lower end surface of the motor cover 105 are abutted against the fixing blocks 103, and fixing screws 106 with one end that can be screwed into the fixing blocks 103 are arranged at the four corners of the upper end surface of the motor cover 105.

[0028] During specific implementation, the absolute grating ruler 108 has code tracks with absolute position encoding engraved on the grating plate 104, and the absolute position information can be directly obtained by reading the encoding of the current position. This measurement method does not require a homing operation, and the current position can be directly determined even after power failure and restart.

[0029] A complex decoding circuit is integrated inside the absolute grating ruler 108, which can parse the encoding information on the grating ruler in real time and output high-precision position data.

[0030] Working principle: This embodiment provides a direct drive motor with stepless adjustment. When in use, during the sliding process of the mover 107, it will drive the guiding assembly 2 to slide synchronously, so that the gear 202 meshes with the toothed belt 111 and rotates. The meshing of the gear 202 and the toothed belt 111 is beneficial to improving the sliding stability of the mover 107. Under the torque action of the torsion springs at both ends of the rotating shaft 207, the arc-shaped connecting plate 205 pulls the gear 202 to closely fit with the toothed belt 111, thereby further ensuring the sliding stability of the mover 107. During the sliding process of the mover 107, the incremental change of the grating fringes is recorded through the cooperation of the absolute grating ruler 108 and the grating plate 104, so as to realize the absolute value measurement of displacement.

[0031] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are within the protection scope of the present utility model.

Claims

1. A direct drive motor with stepless adjustment, characterized in that, Comprising a motor assembly (1); The motor assembly (1) includes a U-shaped mounting base (101) with a linear motor housing (102) fixedly installed inside. A motor cover (105) is detachably installed on the top of the linear motor housing (102). A mover (107) is slidably fitted on the top of the motor cover (105). A toothed belt (111) is fixedly installed on one side of the U-shaped mounting base (101). Guide assemblies (2) are symmetrically and fixedly installed on one side of the mover (107); The guide assemblies (2) include U-shaped plates (206) symmetrically arranged and fixedly installed on one side of the mover (107). A rotating shaft (207) is rotatably installed between the U-shaped plates (206). Torsion springs are provided between both ends of the rotating shaft (207) and the U-shaped plates (206). An arc-shaped connecting plate (205) is constructed and arranged on the outer edge surface of the rotating shaft (207). One end of the arc-shaped connecting plate (205) far from the rotating shaft (207) is fixedly connected to a guiding mechanism; The guiding mechanism includes a gear (202) rotatably arranged and meshing with the toothed belt (111).

2. The direct drive motor with stepless adjustment according to claim 1, characterized in that, The guiding mechanism further includes a rotating seat (201). The gear (202) is rotatably installed between the rotating seats (201).

3. The direct drive motor with stepless adjustment according to claim 2, wherein A connecting shaft (203) is rotatably installed coaxially on the top of the rotating seat (201). A limiting plate (204) is fixedly connected to the top of the connecting shaft (203). One end of the arc-shaped connecting plate (205) far from the rotating shaft (207) is constructed and connected to the outer edge surface of the connecting shaft (203).

4. The direct drive motor with stepless adjustment according to claim 1, characterized in that, A grid plate (104) is fixedly installed on one side of the U-shaped mounting base (101). An absolute grating ruler (108) is fixedly installed on the top of the mover (107).

5. The direct drive motor with stepless adjustment according to claim 1, characterized in that, Permanent magnets (110) are fixedly arranged at equal intervals inside the linear motor housing (102). Fixed blocks (103) are constructed at the four corners of the upper end surface of the linear motor housing (102). A cable chain (109) is arranged on one side of the U-shaped mounting base (101).

6. The direct drive motor with stepless adjustment according to claim 5, characterized in that The four corners of the lower end surface of the motor cover (105) are abutted against the fixed blocks (103). Fixing screws (106) with one end that can be screwed into the fixed blocks (103) are arranged at the four corners of the upper end surface of the motor cover (105).

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