Electromagnetic brake device of crane rotating motor

Abstract

The utility model relates to the field of crane braking, in particular to an electromagnetic brake device of a crane rotary motor, which comprises an electromagnetic brake mechanism, the electromagnetic brake mechanism comprises an armature hub, a brake pad holding disc and a stator, a brake pad is arranged between the brake pad holding disc and the stator, and positioning screw holes are arranged on the outer side of the brake pad holding disc in an array mode. A reserved screw hole is formed in the position, corresponding to the positioning screw hole, of the outer side of the brake pad, a positioning bolt is installed between the positioning screw hole and the reserved screw hole, and an alarm gasket is installed on the portion, located on the lower surface of the brake pad holding disc, of the outer side of the brake pad. A depth adjusting bolt is connected between the alarm gasket and the brake pad holding disc. When the brake pad is worn and the thickness of the brake pad is reduced during use, and the brake pad holding disc is adsorbed again, the alarm gasket in the brake pad holding disc is in contact friction with the upper surface of the stator to give out a sharp sound to prompt that the brake pad needs to be replaced.

Description

Technical Field

[0001] The utility model relates to the field of crane braking, in particular to an electromagnetic brake device for a rotating motor of a crane. Background Art

[0002] Crane is a kind of lifting and handling machinery widely used in ports, workshops, power plants, construction sites and other places, including cantilever cranes, truck cranes, etc. The brake mechanism in the cantilever crane mostly adopts the principle of electromagnetic brake to achieve braking. The electromagnetic brake can generate electromagnetic suction after power is turned on, and the brake plate is sucked to frictionally brake the load end.

[0003] However, since there is no hydraulic oil drive in the electromagnetic brake, there is no alarm function when the friction pad is worn to a certain thickness, which easily leads to the inability to timely judge the wear condition of the brake pad. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electromagnetic brake device for a crane rotary motor, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: an electromagnetic brake device of a crane rotating motor, including an electromagnetic brake mechanism, the electromagnetic brake mechanism including: an armature hub, a brake pad disc, and a stator, a brake pad is arranged between the brake pad disc and the stator, a positioning screw hole is opened in an array on the outer side of the brake pad disc, reserved screw holes are opened on the outer side of the brake pad at positions corresponding to the positioning screw holes, positioning bolts are installed between the positioning screw holes and the reserved screw holes, an alarm gasket is installed on the outer side of the brake pad at the lower surface of the brake pad disc, and a depth adjustment bolt is connected between the alarm gasket and the brake pad disc.

[0006] As a further solution of the utility model: the upper surface array of the brake pad holding the disc is installed with leaf spring joints, the upper surface of the armature hub is provided with mounting holes corresponding to the positions of the leaf spring joints, leaf spring bolts are installed inside the mounting holes, and a leaf spring is connected between the leaf spring bolts and the leaf spring joints.

[0007] As a further solution of the utility model: an electromagnetic coil is installed inside the stator, the side end of the electromagnetic coil is located outside the stator and is connected to an electrical wire, and a drive shaft is provided through the inside of the electromagnetic brake mechanism.

[0008] As a further solution of the utility model: the positioning bolt is meshedly connected with the positioning screw hole and the reserved screw hole.

[0009] As a further solution of the utility model: the alarm gasket is fixedly connected to the depth adjustment bolt.

[0010] As a further solution of the utility model: the leaf spring bolt is fixedly connected to the leaf spring joint through the leaf spring.

[0011] As a further solution of the utility model: the drive shaft is fixedly connected to the armature hub.

[0012] As a further solution of the present invention: the thickness dimension length of the brake pad is greater than the depth dimension length of the brake pad holding the disc.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the brake pad is worn and its thickness is reduced during use, when the brake pad is adsorbed again, the alarm gasket inside the brake pad will contact and rub against the upper surface of the stator to make a sharp sound to prompt that the brake pad needs to be replaced. The depth of the alarm gasket installed inside the brake pad can be controlled by the depth adjustment bolt, which is convenient for controlling the wear thickness of the brake pad.

[0015] 2. Installing the positioning bolts on the outside of the brake pad can ensure that the installed brake pad is in a relatively flat state, thereby ensuring uniform friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the electromagnetic brake device of the crane rotary motor;

[0017] Figure 2 This is an exploded view of the brake pad holding the disc in the electromagnetic brake device of the crane's rotating motor;

[0018] Figure 3 This is a partial enlarged view of the brake pad holding the disc in the electromagnetic brake device of the crane's rotating motor;

[0019] Figure 4 It is a cross-sectional view of the electromagnetic brake mechanism in the electromagnetic brake device of the crane rotary motor;

[0020] Figure 5 This is a partial enlarged view of the alarm gasket in the electromagnetic brake device of the crane's rotating motor.

[0021] In the figure: 1. electromagnetic brake mechanism; 2. armature hub; 3. brake pad holding disc; 4. electrical wire; 5. drive shaft; 6. stator; 201. mounting hole; 202. leaf spring bolt; 203. leaf spring; 301. leaf spring joint; 302. positioning screw hole; 303. brake pad; 304. positioning bolt; 305. reserved screw hole; 306. alarm gasket; 307. depth adjustment bolt; 601. electromagnetic coil. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-5 As shown, the present embodiment provides an electromagnetic brake device for a crane rotating motor, including an electromagnetic brake mechanism 1, the electromagnetic brake mechanism 1 including: an armature hub 2, a brake pad disc 3, and a stator 6, a brake pad 303 is arranged between the brake pad disc 3 and the stator 6, the thickness dimension length of the brake pad 303 is greater than the depth dimension length of the brake pad disc 3, a positioning screw hole 302 is provided in an outer array of the brake pad disc 3, a reserved screw hole 305 is provided at the outer side of the brake pad 303 at a position corresponding to the positioning screw hole 302, a positioning bolt 304 is installed between the positioning screw hole 302 and the reserved screw hole 305, the positioning bolt 304 is meshed with the positioning screw hole 302 and the reserved screw hole 305, an alarm gasket 306 is installed on the outer side of the brake pad 303 on the lower surface of the brake pad disc 3, a depth adjustment bolt 307 is connected between the alarm gasket 306 and the brake pad disc 3, and the alarm gasket 306 is fixedly connected to the depth adjustment bolt 307.

[0024] like Figure 2-5 As shown, in the present embodiment, a leaf spring joint 301 is installed in an array on the upper surface of the brake pad disc 3, a mounting hole 201 is opened on the upper surface of the armature hub 2 at a position corresponding to the leaf spring joint 301, a leaf spring bolt 202 is installed inside the mounting hole 201, a leaf spring 203 is connected between the leaf spring bolt 202 and the leaf spring joint 301, the leaf spring bolt 202 is fixedly connected to the leaf spring joint 301 through the leaf spring 203, an electromagnetic coil 601 is installed inside the stator 6, the side end of the electromagnetic coil 601 is located on the outside of the stator 6 and is connected to an electrical wire 4, a drive shaft 5 is penetrated inside the electromagnetic brake mechanism 1, and the drive shaft 5 is fixedly connected to the armature hub 2.

[0025] The working principle of the utility model is: when in use, the driving mechanism external to the driving shaft 5 controls the armature hub 2 and the brake pad disc 3 to rotate as a whole. When braking is needed, the electrical path of the electrical wire 4 is opened, so that the electromagnetic coil 601 inside the stator 6 is energized to generate magnetism, and then the brake pad disc 3 is adsorbed as a whole to the upper surface of the stator 6, and the leaf spring 203 between the leaf spring bolt 202 and the leaf spring joint 301 is stretched. After the brake pad 303 is adsorbed as a whole and contacts with the stator 6, the magnetic adsorption force cooperates with the friction force to achieve the purpose of rapid braking. When the brake pad 303 is worn and the thickness is reduced during use, when the brake pad disc When the brake pad 303 is adsorbed again, the alarm gasket 306 inside the brake pad holder 3 will contact and rub against the upper surface of the stator 6 to make a sharp sound to prompt that the brake pad 303 needs to be replaced. After the positioning bolt 304 is removed from the inside of the positioning screw hole 302 and the reserved screw hole 305, the entire brake pad 303 is removed and replaced from the inside of the brake pad holder 3. The positioning bolt 304 is installed on the outside of the brake pad 303 to ensure that the installed brake pad 303 is in a relatively flat state, thereby ensuring uniform friction. The depth of the alarm gasket 306 installed inside the brake pad holder 3 can be controlled by the depth adjustment bolt 307, so that the replacement state of the entire brake pad 303 can be controlled.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic brake device for a crane rotating motor, comprising an electromagnetic brake mechanism (1), characterized in that: The electromagnetic brake mechanism (1) comprises: an armature hub (2), a brake pad disc (3), and a stator (6); a brake pad (303) is arranged between the brake pad disc (3) and the stator (6); a positioning screw hole (302) is arranged in an array on the outer side of the brake pad disc (3); a reserved screw hole (305) is arranged on the outer side of the brake pad (303) at a position corresponding to the positioning screw hole (302); a positioning bolt (304) is installed between the positioning screw hole (302) and the reserved screw hole (305); an alarm gasket (306) is installed on the outer side of the brake pad (303) and located on the lower surface of the brake pad disc (3); a depth adjustment bolt (307) is connected between the alarm gasket (306) and the brake pad disc (3).

2. The electromagnetic brake device for a crane rotating motor according to claim 1, characterized in that: The upper surface of the brake pad holding disc (3) is arrayed with leaf spring joints (301), the upper surface of the armature hub (2) is provided with mounting holes (201) at positions corresponding to the leaf spring joints (301), leaf spring bolts (202) are installed inside the mounting holes (201), and a leaf spring (203) is connected between the leaf spring bolts (202) and the leaf spring joints (301).

3. The electromagnetic brake device for a crane rotating motor according to claim 1, characterized in that: An electromagnetic coil (601) is installed inside the stator (6), and the side end of the electromagnetic coil (601) is located outside the stator (6) and is connected to an electrical wire (4). A drive shaft (5) is arranged to penetrate the interior of the electromagnetic brake mechanism (1).

4. The electromagnetic brake device for a crane rotating motor according to claim 1, characterized in that: The positioning bolt (304) is meshedly connected with the positioning screw hole (302) and the reserved screw hole (305).

5. The electromagnetic brake device for a crane rotating motor according to claim 1, characterized in that: The alarm gasket (306) is fixedly connected to the depth adjustment bolt (307).

6. The electromagnetic brake device for a crane rotating motor according to claim 2, characterized in that: The leaf spring bolt (202) is fixedly connected to the leaf spring joint (301) via the leaf spring (203).

7. The electromagnetic brake device for a crane rotating motor according to claim 3, characterized in that: The drive shaft (5) is fixedly connected to the armature hub (2).

8. The electromagnetic brake device for a crane rotating motor according to claim 1, characterized in that: The thickness dimension length of the brake pad (303) is greater than the depth dimension length of the brake pad holding the disc (3).

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