External manual brake releasing device of brake

Abstract

The utility model provides an external manual brake releasing device of a brake, and belongs to the technical field of traction machine brakes. The traction machine brake solves the problem that an existing traction machine brake is poor in safety. The utility model relates to an external manual brake releasing device of a brake. The external manual brake releasing device comprises a brake wheel, a brake arm, an electromagnet, a connecting rod and a handle. Compared with the prior art, the external manual brake-releasing device has the advantages that the handle and the connecting rod directly act on the brake arm, and the external manual brake-releasing device is not directly connected with the brake-releasing bolt, so that when people rotate the handle, the force applied to the handle directly acts on the brake arm, and the brake-releasing bolt does not act on the brake arm. In the process, the brake release bolt is not stressed, so that the service life of the brake release bolt can be effectively prolonged; and secondly, the external manual brake release device can realize the brake release function of the brake only through the handle and the connecting rod, so that the structure of the manual brake release device is effectively simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of traction machine brakes and relates to an external manual brake release device for the brake. Background Art

[0002] The traction machine is the core power source for the elevator to lift, which includes a traction wheel and a brake for braking the traction wheel, wherein the brake wheel of the brake is coaxially arranged with the traction wheel. When working, the brake wheel is braked and the traction wheel also stops rotating to achieve the braking of the elevator. In actual use, when the elevator is installed, debugged or repaired and maintained, the elevator may stop between adjacent floors. At this time, the maintenance personnel need to release the brake of the traction machine so that the elevator can move to the nearest floor to achieve the purpose of rescuing trapped passengers. For example, an external manual brake release device of a brake with a publication number of CN218434383U includes: an adjusting support A bracket, which is used to connect with the brake arm of the brake, and the adjusting bracket is located between the brake arm of the brake and the electromagnet; a brake release plate, which is rotatably arranged on the adjusting bracket and linked with the adjusting bracket; a bearing, which is installed on the brake release plate; a brake release handle, which is installed on the brake release plate. During the brake release process, the brake release handle is rotated to drive the brake release plate to rotate, so that the bearing abuts against the electromagnet of the brake and pushes the gap adjusting bolt outward until the brake arm of the brake is separated from the brake wheel. The diameter of the gap adjusting bolt is small. After long-term use, the gap adjusting bolt is very easy to break, resulting in failure of the braking function of the brake, thereby causing a safety accident. Summary of the invention

[0003] The utility model aims to solve the above problems in the prior art and proposes an external manual brake release device with stable braking effect and high safety.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an external manual brake release device for a brake, comprising:

[0005] A brake wheel, wherein brake arms for limiting the rotation of the brake wheel are movably provided on both sides of the brake wheel;

[0006] The electromagnet is arranged between the two brake arms. Connecting rods are hinged on both sides of the electromagnet. A handle is hinged on the top of each brake arm. One end of each connecting rod away from the electromagnet is hinged to the middle of the handle.

[0007] In the above-mentioned external manual brake release device of a brake, mounting plates are provided at the two end faces of the electromagnet, and a third bolt is movably penetrated on each of the mounting plates, and the third bolt movably passes through one end of the connecting rod.

[0008] In the above-mentioned external manual brake release device of a brake, a third nut is threadedly connected to the third bolt.

[0009] In the above-mentioned external manual brake release device of a brake, each brake arm is detachably connected with a first bolt, and the first bolt movably passes through one end of the handle.

[0010] In the above-mentioned external manual brake release device, a second bolt is movably inserted into the end of the connecting rod away from the electromagnet, and the second bolt movably passes through the middle part of the handle, and a second nut is threadedly connected to the second bolt.

[0011] In the above-mentioned external manual brake release device of a brake, a top block is further provided between the two brake arms, and the top block is located between the brake wheel and the electromagnet.

[0012] In the above-mentioned external manual brake release device of a brake, brake bolts are provided at both ends of the top block, and each of the brake bolts movably passes through the corresponding brake arm.

[0013] In the above-mentioned external manual brake release device of a brake, a brake spring is provided on each of the brake bolts, and the brake spring and the top block are respectively located on both sides of the brake arm.

[0014] In the above-mentioned external manual brake release device of a brake, one end of the brake spring abuts against the brake arm, and the other end of the brake spring is connected to the end of the brake bolt.

[0015] In the above-mentioned external manual brake release device of a brake, push rods are movably provided at both end surfaces of the electromagnet, and each of the push rods is provided with a release bolt, and the release bolt is connected to the corresponding brake arm.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] Compared with the prior art, the external manual brake releasing device of the utility model directly acts on the brake arm through the handle and the connecting rod, and has no direct connection with the brake releasing bolt. Therefore, when people turn the handle, the force exerted on the handle will directly act on the brake arm, and in this process, the brake releasing bolt is not subjected to force, thus effectively extending the service life of the brake releasing bolt; secondly, the external manual brake releasing device of the utility model can realize the brake releasing function only through the handle and the connecting rod, which effectively simplifies the structure of the manual brake releasing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure from another perspective after removing a set of connecting rods and handles.

[0020] Figure 3 This is an assembly drawing of the mounting plate, connecting rod, and handle. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 — Figure 3 As shown, an external manual brake release device of the utility model comprises a brake wheel 100 , a brake arm 200 , an electromagnet 300 , a connecting rod 310 and a handle 320 .

[0023] Both sides of the brake wheel 100 are movably provided with brake arms 200 for limiting the rotation of the brake wheel 100. The bottom end of the brake arm 200 is hinged to the ground or to a base (not marked in the figure) suitable for the brake. The electromagnet 300 is arranged between the two brake arms 200. Both sides of the electromagnet 300 are hinged with connecting rods 310. The top of each brake arm 200 is hinged with a handle 320. The end of each connecting rod 310 away from the electromagnet 300 is hinged to the middle of the handle 320. A push rod 340 is movably provided at the two end surfaces, and each of the push rods 340 is provided with a release bolt 341, and the release bolt 341 is connected to the corresponding brake arm 200. When the brake needs to be released manually, people only need to rotate the handle 320 to increase the angle between the connecting rod 310 and the handle 320. In this way, the distance between the brake arm 200 and the electromagnet 300 can be effectively increased, that is, the distance between the brake arm 200 and the brake wheel 100 is increased, so that the brake arm 200 releases the brake wheel 100.

[0024] Compared with the prior art, the external manual brake releasing device of the utility model directly acts on the brake arm 200 through the handle 320 and the connecting rod 310, and has no direct connection with the brake releasing bolt 341. Therefore, when people turn the handle 320, the force exerted on the handle 320 will directly act on the brake arm 200, and in this process, the brake releasing bolt 341 is not subjected to force, thus effectively extending the service life of the brake releasing bolt 341; secondly, the external manual brake releasing device of the utility model can realize the manual release function of the brake only through the handle 320 and the connecting rod 310, which effectively simplifies the structure of the manual brake releasing device.

[0025] The two end surfaces of the electromagnet 300 are provided with mounting plates 330, each of the mounting plates 330 is movably provided with a third bolt 331, the third bolt 331 movably passes through one end of the connecting rod 310, and the third bolt 331 is threadedly connected to the third nut 332. Each of the brake arms 200 is detachably connected with the first bolt 210, the first bolt 210 movably passes through one end of the handle 320, and the end of the connecting rod 310 away from the electromagnet 300 is movably provided with a second bolt 311, the second bolt 311 movably passes through the middle of the handle 320, and the second bolt 311 is threadedly connected to the second nut 312. During installation, people need to pass the first bolt 210 through one end of the handle 320, the third bolt 331 passes through the connecting rod 310 and the mounting plate 330 in turn, and connect the first bolt 210 to the corresponding brake arm 200, and then install the third nut 332 on the third bolt 331, so that the handle 320 can rotate around the first bolt 210 and the connecting rod 310 can rotate around the third The third bolt 331 is rotated, and then the second bolt 311 needs to be passed through the connecting rod 310 and the handle 320 in sequence, and the second nut 312 is installed on the second bolt 311, so as to complete the installation of the electromagnet 300, the mounting plate 330, the connecting rod 310, the handle 320 and the brake arm 200. During the working process, when people turn the handle 320, the bottom end of the brake arm 200 is hinged to the ground or a base suitable for the brake, and the brake arm 200 can only be turned toward the direction of the electromagnet 300 or away from it. When the handle 320 rotates around the brake arm 200 by rotating away from the electromagnet 300, the angle between the connecting rod 310 and the handle 320 will change accordingly. That is, when the angle between the connecting rod 310 and the handle 320 increases, the distance between the electromagnet 300 and the brake arm 200 will increase. Similarly, manual release of the brake can be achieved. When the angle between the connecting rod 310 and the handle 320 decreases, the distance between the electromagnet 300 and the brake arm 200 will decrease, so as to achieve manual braking of the brake.

[0026] A top block 400 is also provided between the two brake arms 200, and the top block 400 is located between the brake wheel 100 and the electromagnet 300. Braking bolts 410 are provided at both ends of the top block 400, and each of the brake bolts 410 can move through the corresponding brake arm 200. A brake spring 411 is provided on each of the brake bolts 410. The brake spring 411 and the top block 400 are respectively located on both sides of the brake arm 200, wherein one end of the brake spring 411 is against the brake arm 200, and the brake The other end of the dynamic spring 411 is connected to the end of the brake bolt 410. When the brake is in a braking state, the brake arm 200 is subjected to and is only subjected to the elastic force of the brake spring 411, so that the brake arm 200 brakes the brake wheel 100; when people turn the handle 320 and the brake arm 200 overcomes the elastic force of the brake spring 411 on the brake arm 200, the brake arm 200 will rotate outward relative to the brake wheel 100, so that the brake arm 200 releases the brake wheel 100, that is, the brake is in a released state.

[0027] Furthermore, when the electromagnet 300 is energized, the push rod 340 will be subjected to the electromagnetic force of the electromagnet 300, so that the push rod 340 drives the release bolt 341 to move outward, thereby driving the brake arm 200 to rotate outward relative to the brake wheel 100, and at the same time the brake spring 411 is compressed, that is, the automatic release of the brake is achieved, and in this process, the angle between the connecting rod 310 and the handle 320 will also change accordingly to adapt to the force generated between the brake arm 200 and the electromagnet 300; when the electromagnet 300 is powered off, the electromagnet 300 no longer generates electromagnetic force, and at this time the brake arm 200 is only subjected to the elastic force of the brake spring 411, and the brake arm 200 is reset and rotated, that is, the automatic braking of the brake is achieved, and in this process, the angle between the connecting rod 310 and the handle 320 will also change accordingly to adapt to the force generated between the brake arm 200 and the electromagnet 300.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An external manual brake release device, characterized in that: include: A brake wheel, wherein brake arms for limiting the rotation of the brake wheel are movably provided on both sides of the brake wheel; The electromagnet is arranged between the two brake arms. Connecting rods are hinged on both sides of the electromagnet. A handle is hinged on the top of each brake arm. One end of each connecting rod away from the electromagnet is hinged to the middle of the handle.

2. The external manual brake release device of claim 1, characterized in that: Mounting plates are arranged at two end surfaces of the electromagnet, and a third bolt is movably passed through each of the mounting plates, and the third bolt movably passes through one end of the connecting rod.

3. The external manual brake release device of claim 2, characterized in that: The third bolt is threadedly connected with a third nut.

4. The external manual brake release device of claim 1, characterized in that: Each of the brake arms is detachably connected with a first bolt, and the first bolt movably passes through one end of the handle.

5. The external manual brake release device of claim 1, characterized in that: A second bolt is movably inserted through one end of the connecting rod away from the electromagnet. The second bolt movably passes through the middle part of the handle. A second nut is threadedly connected to the second bolt.

6. The external manual brake release device of claim 1, characterized in that: A top block is also provided between the two brake arms, and the top block is located between the brake wheel and the electromagnet.

7. The external manual brake release device of claim 6, characterized in that: Braking bolts are arranged at both ends of the top block, and each of the braking bolts movably passes through a corresponding braking arm.

8. The external manual brake release device of claim 7, characterized in that: Each of the brake bolts is provided with a brake spring, and the brake spring and the top block are respectively located on both sides of the brake arm.

9. The external manual brake release device of claim 8, characterized in that: One end of the brake spring abuts against the brake arm, and the other end of the brake spring is connected to the end of the brake bolt.

10. The external manual brake release device of claim 1, characterized in that: Push rods are movably provided at both end surfaces of the electromagnet, and each push rod is provided with a brake release bolt, which is connected to the corresponding brake arm.

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