Square disc brake

Abstract

The utility model discloses a square disc brake which comprises an electromagnet device, and the electromagnet device comprises an armature and an electromagnet. The device further comprises an amplifying mechanism base, the amplifying mechanism base is arranged on one side of the electromagnet, a microswitch is arranged on the amplifying mechanism base, an ejector rod mechanism used for triggering the microswitch is arranged on the armature, and an ejector rod spring used for resetting the ejector rod mechanism is arranged on the ejector rod mechanism in a sleeved mode. And an amplifying mechanism is arranged between the ejector rod mechanism and the microswitch. According to the square disc brake, feedback signals of the microswitch are optimized and amplified through the amplification mechanism and the ejector rod mechanism, and the amplification factor ranges from 2.5 times to 3.1 times. Compared with a traditional microswitch shifting piece, the optimized amplifying mechanism saves more space and has longer service life.

Description

Technical Field

[0001] The utility model relates to the field of elevator brakes, in particular to a block disc brake. Background Art

[0002] With the development of society and the continuous expansion of urbanization, high-rise buildings in various places have sprung up in front of people. Elevators, as an indispensable vertical transportation tool in high-rise buildings, are closely related to people's lives. The elevator brake is self-evident for the safety of the elevator. The disc brake used in traditional elevators is limited by the size of the space, and the braking stroke cannot be adjusted, which will cause insensitive braking due to aging of parts. Compared with traditional brakes, the utility model can adjust the braking stroke of the brake to offset the problem of insensitive braking caused by adverse factors such as wear and fatigue, and the improved structure can extend the service life. Utility Model Content

[0003] The utility model aims to provide a novel square disc brake with simple structure, flexible braking stroke, strong braking force and long service life.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A square disc brake comprises: an electromagnet device, wherein the electromagnet device comprises an armature and an electromagnet, wherein a gap is provided between the armature and the electromagnet, and wherein the armature moves relative to the electromagnet when power is supplied to the electromagnet device; and an amplifying mechanism base, wherein the amplifying mechanism base is arranged on one side of the electromagnet, wherein a micro switch is arranged on the amplifying mechanism base, wherein a push rod mechanism for triggering the micro switch is arranged on the armature, wherein a push rod spring for resetting the push rod mechanism is sleeved on the push rod mechanism, wherein an amplifying mechanism is arranged between the push rod mechanism and the micro switch, wherein the amplifying mechanism is used to amplify the stroke of the push rod mechanism so as to optimize and amplify the feedback signal of the micro switch.

[0006] Preferably, the armature is provided with a through hole, and the push rod mechanism is arranged on the armature through the through hole.

[0007] Preferably, the push rod mechanism is provided with a push rod baffle for limiting the movement range of the push rod.

[0008] Preferably, the push rod baffle is a bent arm structure bent at 90 degrees, the push rod baffle is a bent arm structure bent at 90 degrees, the short arm end of the push rod baffle has a threaded hole, the short arm end of the push rod baffle is screwed onto the push rod mechanism through the threaded hole, and the long arm end of the push rod baffle is set on the armature through a fastening bolt.

[0009] Preferably, the amplifying mechanism includes a lever, the short axis end of the lever is arranged on the base of the amplifying mechanism through a positioning bolt, the push rod mechanism is provided with a push block corresponding to the short axis end of the lever, and the long axis end of the lever is in contact with the micro switch contact.

[0010] Preferably, the short axis end of the lever is arranged on the base of the amplification mechanism through a positioning bolt, the long axis end of the lever is in contact with the micro switch contact, and the ratio of the long axis to the short axis is between 2:1 and 5:1.

[0011] The beneficial effect of the utility model is that the square disc brake of the utility model optimizes and amplifies the feedback signal of the micro switch through the amplification mechanism and the push rod mechanism, and the amplification ratio is 2.5 to 3.1 times. The device includes an amplification mechanism base, a micro switch, a push rod spring, a push rod baffle, a push rod mechanism and an amplification mechanism. When the elevator is about to start braking, the electromagnet is energized, and the armature moves relative to the electromagnet, driving the push rod to move. The movement of the push rod mechanism drives the amplification mechanism to move, amplifying the displacement of the push rod mechanism, improving the braking sensitivity, so that the brake meets the braking stroke requirements. The push rod spring provides elastic restoring force for the push rod mechanism, so that it returns to the initial position when the braking signal is released. The push rod baffle is used to limit the movement range of the push rod to achieve controllable braking stroke. The device can adjust the braking stroke according to actual needs to achieve better braking effect. Compared with the traditional micro switch paddle, the optimized amplification mechanism saves more space and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the square disc brake of the utility model;

[0013] Figure 2 yes Figure 1 An enlarged schematic diagram of A in FIG.

[0014] Figure 3 It is a front view of the square disc brake of the utility model;

[0015] Figure 4 yes Figure 3 An enlarged schematic diagram of point B in FIG.

[0016] In the figure: the amplification mechanism base 10, the armature 11, the micro switch 12, the electromagnet 13, the ejector spring 14, the ejector mechanism 16, the ejector baffle 17, the positioning screw 24, the ejector block 26, the fixing bolt 36, the positioning bolt 37, the amplification structure 38, the lever 381, and the micro switch contact 39. DETAILED DESCRIPTION

[0017] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0018] like Figures 1 to 4 As shown, the utility model is a block disc brake, including an electromagnet device, including an armature 11 and an electromagnet 13, for providing driving force. It also includes an amplification mechanism base 10, which is an integral structure for supporting and fixing. The amplification mechanism base 10 can be made of metal or other high-strength materials to ensure sufficient stability and load-bearing capacity. The amplification mechanism base 10 and the armature 11 also include a top rod baffle 17 and an amplification structure 38. A micro switch 12 is provided on the base 10 of the amplification mechanism through a positioning screw 24, which is used to start and stop the brake; a micro switch contact 39 is provided on the micro switch 12, which is used to cooperate with the braking stroke; a through hole is provided on the armature 11, and a push rod mechanism 16 is provided in the through hole; a threaded hole is provided at the short arm end of the push rod baffle 17, and the short arm end of the push rod baffle 17 is tightened and sleeved on the push rod mechanism 16 through the threaded hole; the long arm end of the push rod baffle 17 is set on the armature 11 through a fixing bolt 36; a push rod spring 14 is sleeved on the push rod mechanism 16, one end of the push rod spring 14 is in contact with the push rod baffle 17, and the other end is in contact with the ejector block 26; the stroke of the push rod mechanism 16 can be adjusted by changing the fixed position of the long arm end of the push rod baffle 17 to meet different braking stroke requirements.

[0019] The amplification mechanism 38 includes a lever 381 for amplifying the movement of the push rod mechanism 16; the short axis end of the lever 381 is set on the base of the amplification mechanism through a positioning bolt 37, and the long axis end of the lever is in contact with the brake switch contact 39; the length of the lever 381 is adjustable to adjust the amplification factor to obtain a matching braking stroke.

[0020] The specific braking principle is as follows: When the brake is about to work, the electromagnet device is energized, and the armature 11 moves relative to the electromagnet 13 due to the magnetic attraction, and drives the push rod mechanism 16 to move. When the push rod mechanism 16 moves, the push rod spring 14 is compressed to make the push rod spring obtain elastic restoring force. The movement of the push rod mechanism 17 will drive the lever 381 in the amplification mechanism assembly 38 to move. Since the short axis end of the lever 381 is set on the amplification mechanism base 10 through the positioning bolt 37, and the long axis end is in contact with the brake switch contact 39, the movement of the lever 381 will amplify the displacement of the push rod mechanism 16. The amplified displacement stroke acts on the micro switch contact 39. The micro switch 12 is closed and the braking begins. When the elevator is running, the electromagnet device is powered off, and the elastic force stored in the push rod spring 14 will provide elastic restoring force for the push rod mechanism 16, and the push rod mechanism 16 and the armature 11 slide back to the initial position. At the same time, the micro switch 12 is reset, the lever 381 returns to the initial position, and the square disc brake is released from the braking state. Through the above braking principle, the square disc brake of the utility model optimizes and amplifies the micro switch feedback signal through the amplification mechanism and the push rod mechanism, and the amplification ratio is 2.5 to 3.1 times. Since the structures of the amplification mechanism 38 and the push rod mechanism 16 are adjustable, the braking stroke can be adjusted according to actual needs, making the brake more sensitive and achieving better braking effect. Compared with the traditional micro switch paddle, the optimized amplification structure has a curved arm structure that saves more space and has a longer service life.

[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A square disc brake, comprising: An electromagnet device, the electromagnet device comprising an armature and an electromagnet, a gap being provided between the armature and the electromagnet, and the armature moving relative to the electromagnet when the electromagnet device is energized; The invention is characterized in that: it also includes an amplifying mechanism base, which is arranged on one side of the electromagnet, a micro switch is arranged on the amplifying mechanism base, a push rod mechanism for triggering the micro switch is arranged on the armature, a push rod spring for resetting the push rod mechanism is sleeved on the push rod mechanism, an amplifying mechanism is arranged between the push rod mechanism and the micro switch, and the amplifying mechanism is used to amplify the stroke of the push rod mechanism and optimize and amplify the feedback signal of the micro switch.

2. A square disc brake according to claim 1, characterized in that: The armature is provided with a through hole, and the push rod mechanism is arranged on the armature through the through hole.

3. A square disc brake according to claim 1, characterized in that: The push rod mechanism is provided with a push rod baffle for limiting the movement range of the push rod.

4. A square disc brake according to claim 3, characterized in that: The push rod baffle is a bent arm structure bent at 90 degrees. The short arm end of the push rod baffle has a threaded hole. The short arm end of the push rod baffle is screwed and sleeved on the push rod mechanism through the threaded hole. The long arm end of the push rod baffle is set on the armature through a fastening bolt.

5. The square disc brake according to claim 1, characterized in that: The amplification mechanism includes a lever, the short axis end of the lever is arranged on the amplification structure base through a positioning bolt, the push rod mechanism is provided with a push block corresponding to the short axis end of the lever, and the long axis end of the lever is in contact with the micro switch contact.

6. A square disc brake according to claim 5, characterized in that: The major-minor axis ratio is between 2:1 and 5:1.

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