Power-on and power-off laminated brake

Abstract

The invention relates to the technical field of brakes, and provides a power-on and power-off laminated brake which comprises a power-on speed reduction unit and a power-off braking unit which are coaxially connected and laminated. The power-off brake unit comprises a power-off yoke, a first armature and a first brake disc which are sequentially arranged in the axial direction. The power-on speed reduction unit comprises a power-on magnet yoke, a second armature and a second brake disc, the second armature is connected with the second brake disc, and a brake spring is connected between the power-on magnet yoke and the second armature in an abutting mode; and the rotating speed of the motor shaft is adjusted by controlling the power-on and power-off states of the power-on yoke and the power-off yoke. The brake has the function of reducing the speed of the motor shaft and also has the maintaining function, and in the speed reducing process, the braking speed reducing torque can be adjusted by controlling the voltage.

Description

Technical Field

[0001] The present invention relates to the technical field of brakes, and in particular to a energized and de-energized superimposed brake. Background Art

[0002] Electromagnetic brakes, also known as electromagnetic brakes or electromagnetic brakes, are mechanical parts that use electromagnetic force to achieve braking or holding. The holding function of electromagnetic brakes refers to its ability to maintain a mechanical system in a specific state or position. Specifically, when the electromagnetic brake is activated, it can generate sufficient braking force to stop or hold the moving parts in the mechanical system so that they will not move or rotate due to inertia or other external forces.

[0003] Conventional energized or de-energized electromagnetic brakes are installed on the high-speed shaft of the equipment. When in use, when the power is on or off, the brake can only brake the high-speed shaft to stop and achieve the holding function. Therefore, a composite brake with both deceleration and braking holding functions is designed. Summary of the invention

[0004] The object of the present invention is to provide a energized and de-energized superimposed brake with deceleration and brake holding functions, and adjustable deceleration braking torque.

[0005] The present invention is achieved through the following technical solutions: a energized and de-energized superimposed brake, comprising an energized deceleration unit and a de-energized braking unit coaxially connected and superimposed; the de-energized braking unit comprises a de-energized electromagnetic yoke, a first armature and a first brake disc arranged axially in sequence; the energized deceleration unit comprises an electromagnetic yoke, a second armature and a second brake disc, the second armature is connected to the second brake disc, and a brake spring is abutted between the electromagnetic yoke and the second armature; the motor shaft speed is adjusted by controlling the on and off states of the electromagnetic yoke and the de-energized electromagnetic yoke.

[0006] Furthermore, it also includes an adjusting block installed on the motor shaft, an adjusting bolt is installed on the end surface of the adjusting block, and the front end of the adjusting bolt abuts against the second brake disc.

[0007] Furthermore, it also includes a mounting shaft, which passes through the losing electromagnetic yoke, the first armature, the gaining electromagnetic yoke and the second armature in sequence, and the adjusting block is installed on the mounting shaft.

[0008] Furthermore, a positioning ring is installed on the installation shaft, a bearing is sleeved in the positioning ring, and the bearings are respectively arranged between the electromagnetic yoke, the electromagnetic yoke and the installation shaft.

[0009] Furthermore, the first brake disc is connected to the mounting shaft by a spline.

[0010] Furthermore, the deenergizing brake unit also includes a manual release mechanism, a notch is provided on the side of the deenergizing magnet yoke, a release bolt is screwed into the notch, and the release bolt passes through the deenergizing magnet yoke and is connected to the first armature.

[0011] Furthermore, it also includes a protective plate, which is detachably connected to the notch.

[0012] Furthermore, it also includes a dust cover, which is installed on one end of the electromagnetic yoke and is threadedly connected thereto.

[0013] The technical solution of the present invention has at least the following advantages and beneficial effects: the present invention arranges the energized brake and the de-energized brake in a superimposed and connected manner, when the motor shaft rotates normally, the de-energized electromagnetic yoke is energized, and the energized brake is de-energized, and the motor shaft is not hindered from rotating; when the motor shaft needs a certain torque to decelerate, the suction force of the second armature is adjusted by controlling the voltage of the electromagnetic yoke, so that the friction force between the second armature and the electromagnetic yoke is adjustable, thereby controlling the deceleration effect on the motor shaft; and when the motor shaft needs to stop, the coils of the de-energized electromagnetic yoke and the electromagnetic yoke are both de-energized, and the first armature and the first brake disc are instantly pressed together to brake and keep the motor shaft in a stopped state, thereby obtaining a more diversified control method effect and meeting the more complex operating conditions of the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic diagram of the right end structure of the energized and de-energized superimposed brake provided in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction;

[0017] Figure 3 for Figure 1 A schematic cross-sectional view along the BB direction;

[0018] Figure 4 for Figure 3 Schematic diagram of the C direction in FIG.

[0019] Figure 5 It is a structural schematic diagram of the left end surface of the energized and de-energized superimposed brake in the present invention.

[0020] Icons: 1-de-energized brake unit, 11-de-energized electromagnetic yoke, 111-notch, 12-first armature, 13-first brake disc, 2-energized deceleration unit, 21-electromagnetic yoke, 22-second armature, 23-second brake disc, 24-brake spring, 25-adjusting block, 26-adjusting bolt, 3-installing shaft, 4-locating ring, 5-bearing, 6-release bolt, 7-release spring, 8-protective plate, 9-dust cover. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] The following is further described in conjunction with specific embodiments. Figure 1-Figure 5As shown, this embodiment is a energized and de-energized composite brake, comprising an energized deceleration unit 2 and a de-energized braking unit 1 coaxially connected and overlapped; the de-energized braking unit 1 comprises a de-energized electromagnetic yoke 11, a first armature 12 and a first brake disc 13 arranged axially in sequence; the energized deceleration unit 2 comprises an electromagnetic yoke 21, a second armature 22 and a second brake disc 23, the second armature 22 is connected to the second brake disc 23, and a brake spring 24 is abutted between the electromagnetic yoke 21 and the second armature 22; the motor shaft speed is adjusted by controlling the on and off states of the electromagnetic yoke 21 and the de-energized electromagnetic yoke 11; specifically, when in use, the composite brake is installed on the motor shaft, and when the motor shaft rotates normally, the de-energized electromagnetic yoke 11 is on The first armature 12 is electrically attracted, the first armature 12 is separated from the first brake disc 13, the first brake disc 13 rotates normally with the motor shaft, and the electromagnetic yoke 21 is de-energized, the second armature 22 is separated from the electromagnetic yoke 21, the second armature 22 and the second brake disc 23 rotate normally with the motor shaft. When the motor shaft needs to be decelerated, the electromagnetic yoke 21 is energized to generate electromagnetic force to attract the second armature 22 to squeeze the brake spring 24 and the electromagnetic yoke 21 for friction contact and deceleration. The magnitude of the braking torque generated can be adjusted by the controller voltage to achieve the purpose of deceleration; and when the motor shaft needs to be stopped in time, the electromagnetic yoke 11 is de-energized and braked, and the electromagnetic yoke 21 is also de-energized after being energized to assist in deceleration and stop, thereby realizing the holding function.

[0025] like Figure 2 As shown, in this embodiment, it also includes an adjusting block 25 installed on the motor shaft, and an adjusting bolt 26 is installed on the end face of the adjusting block 25, and the front end of the adjusting bolt 26 abuts against the second brake disc 23; specifically, the second armature 22 and the second brake disc 23 are combined into an integrated structure by connecting screws, which rotate synchronously with the shaft, and a small axial displacement adjustment is performed by twisting the adjusting bolt 26 to support one side end face of the second brake disc 23, so as to control the size of the air gap between the second armature and the electromagnetic yoke 21.

[0026] like Figure 2 As shown, in this embodiment, it also includes a mounting shaft 3, which is connected in sequence with the electromagnetic yoke 11, the first armature 12, the electromagnetic yoke 21 and the second armature 22, and the adjusting block 25 is installed on the mounting shaft 3; specifically, one end of the mounting shaft 3 can be extended and fixedly connected to the motor shaft. When the mounting shaft 3 is decelerated, its state will be transmitted to the motor shaft, and the installation is also more convenient.

[0027] In this embodiment, a positioning ring 4 is installed on the installation shaft 3, and a bearing 5 is sleeved in the positioning ring 4. The bearings 5 ​​are respectively arranged between the electromagnetic yoke 21, the electromagnetic yoke 11 and the installation shaft 3; specifically, the electromagnetic yoke 11 and the electromagnetic yoke 21 are connected and fixed, and the positions of the positioning ring 4 correspond to the inner hole positions of the electromagnetic yoke 21 and the electromagnetic yoke 11, respectively. The bearing 5 is sleeved between the two positioning rings 4, so that the relative rotation of the installation shaft 3 relative to the electromagnetic yoke 21 and the electromagnetic yoke 11 can be smoothly realized through the bearing 5.

[0028] It is worth noting that the first brake disc 13 is connected to the mounting shaft 3 by a spline, and at least one spline sleeve is provided on the mounting shaft 3. The second brake disc 23 is also connected to the mounting shaft 3 by a spline.

[0029] like Figure 3 and Figure 4 As shown, a manual forced release function is further added to the composite brake, and the power-off braking unit 1 also includes a manual release mechanism. A notch 111 is opened on the side of the power-off electromagnetic yoke 11, and a release bolt 6 is screwed into the notch 111. The release bolt 6 passes through the power-off electromagnetic yoke 11 and is connected to the first armature 12; specifically, a release spring 7 is pressed in the mounting hole of the release bolt 6 in the power-off electromagnetic yoke 11. When a shear wrench is inserted into the notch 111 and the release bolt 6 is tightened instantaneously, the release screw pulls the first armature 12 toward one end of the power-off electromagnetic yoke 11 to squeeze the reset spring, and the first armature 12 is separated from the first brake disc 13. After the release is completed, the release bolt 6 is rotated counterclockwise to apply force to the release spring 7.

[0030] Reference Figure 4 As shown, this embodiment also includes a protective plate 8, which is detachably connected to the gap 111. The protective plate 8 is used to block the gap 111 for protection and improve the protection level. The protective plate 8 is provided with a sealing member, such as a sealing rubber ring, and is more beautiful.

[0031] like Figure 2 As shown, this embodiment also includes a dust cover 9, which is installed on one end of the electromagnetic yoke 21 and is threadedly connected thereto. The dust cover 9 covers the rear end of the electric reduction unit 2 to isolate dust and provide protection.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A energized and de-energized superimposed brake, characterized in that: It comprises an energized deceleration unit (2) and a de-energized braking unit (1) which are coaxially connected and overlapped; The deenergizing brake unit (1) comprises a deenergizing magnet yoke (11), a first armature (12) and a first brake disc (13) which are arranged in sequence in the axial direction; The electric deceleration unit (2) comprises an electromagnetic yoke (21), a second armature (22) and a second brake disc (23), wherein the second armature (22) is connected to the second brake disc (23), and a brake spring (24) is abutted between the electromagnetic yoke (21) and the second armature (22); The motor shaft is held by controlling the on / off states of the gaining electromagnetic yoke (21) and the losing electromagnetic yoke (11) to decelerate or brake.

2. The energized and de-energized superimposed brake according to claim 1, characterized in that: It also includes an adjustment block (25) mounted on the motor shaft, an adjustment bolt (26) being mounted on the end surface of the adjustment block (25), and a front end of the adjustment bolt (26) abutting against the second brake disc (23).

3. The energized and de-energized superimposed brake according to claim 2 is characterized in that: It also comprises a mounting shaft (3), wherein the mounting shaft (3) sequentially passes through the lost electromagnetic yoke (11), the first armature (12), the gained electromagnetic yoke (21) and the second armature (22), and the adjustment block (25) is mounted on the mounting shaft (3).

4. The energized and de-energized superimposed brake according to claim 3 is characterized in that: A positioning ring (4) is installed on the installation shaft (3), a bearing (5) is sleeved inside the positioning ring (4), and the bearing (5) is respectively arranged between the electromagnetic yoke (21), the lost electromagnetic yoke (11) and the installation shaft (3).

5. The energized and de-energized superimposed brake according to claim 4 is characterized in that: The first brake disc (13) is connected to the mounting shaft (3) by means of a spline.

6. The energized and de-energized superimposed brake according to claim 1, characterized in that: The deenergized braking unit (1) also includes a manual release mechanism. A notch (111) is provided on the side of the deenergized electromagnetic yoke (11). A release bolt (6) is screwed into the notch (111). The release bolt (6) passes through the deenergized electromagnetic yoke (11) and is connected to the first armature (12).

7. The energized and de-energized superimposed brake according to claim 6, characterized in that: It also comprises a protective plate (8), wherein the protective plate (8) is detachably connected to the notch (111).

8. The energized and de-energized superimposed brake according to claim 1, characterized in that: It also includes a dust cover (9), which is installed on one end of the electromagnetic yoke (21) and is threadedly connected thereto.

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