Escalator safety braking system

Abstract

The utility model provides an escalator safety braking system, and belongs to the technical field of escalator braking equipment. The problem that an electromagnet in escalator braking equipment is poor in stability is solved. The escalator safety braking system comprises a braking frame, a pawl, an electromagnet, a traction assembly, a spring, a trigger switch, a trigger piece and a controller. According to the utility model, the electromagnet is internally and only provided with the spring for pushing the traction assembly to reset, the controller is arranged in the case of the machine room, and the trigger switch is arranged outside the electromagnet, so that the situation of signal interference between the trigger switch and the controller can be avoided, thereby ensuring that the electromagnet can work stably; and the service life of the electromagnet is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of escalator braking equipment and relates to an escalator safety braking system. Background Art

[0002] The main engine in the machine room is the core that drives the entire escalator. In order to prevent the main engine from rotating on its own when the escalator stops working or is damaged, people have developed a braking mechanism for the main axis rotation. Among them, the electromagnet is the core of driving the braking mechanism. Most electromagnets are equipped with a controller and a trigger switch for controlling their operation. If the trigger switch and the controller are both located inside the electromagnet and the distance between the two is too close, the signals between the controller and the trigger switch will interfere, causing the electromagnet to fail easily. Summary of the invention

[0003] The utility model aims to solve the above problems in the prior art and proposes an escalator safety brake system which can make the electromagnet work stably.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an escalator safety braking system, comprising:

[0005] A brake frame, a ratchet is hinged on the brake frame, an electromagnet is provided on the brake frame, a traction assembly for driving the ratchet to rotate is movably provided on the electromagnet, and a spring for pushing the traction assembly to reset is provided in the electromagnet;

[0006] The trigger switch is arranged on the brake frame, the traction assembly is provided with a trigger member corresponding to the trigger switch, and the machine room of the escalator is provided with a controller for controlling the electromagnet.

[0007] In the above-mentioned escalator safety brake system, a mounting frame for mounting the electromagnet is provided on the brake frame, and the trigger switch is mounted on the mounting frame.

[0008] In the above-mentioned escalator safety braking system, the traction assembly includes a traction rod hinged to the pawl, and the traction rod is connected to the electromagnet through a connecting rod.

[0009] In the above-mentioned escalator safety brake system, an iron rod is movably inserted into the electromagnet, and an anti-slip groove is provided on the side surface of the iron rod close to one end of the connecting rod.

[0010] In the above-mentioned escalator safety braking system, the trigger member includes a trigger block sleeved on the connecting rod, and a truncated cone block is provided on one end of the trigger block, wherein the trigger block and the truncated cone block are integrally formed.

[0011] In the above-mentioned escalator safety braking system, two limiting nuts are threadedly connected to the connecting rod, one limiting nut squeezes one end of the trigger block away from the truncated cone block, and the other limiting nut squeezes one end of the truncated cone block away from the trigger block.

[0012] In the above-mentioned escalator safety braking system, the mounting frame is provided with a limit plate for mounting a trigger switch.

[0013] In the above-mentioned escalator safety braking system, a limiting groove is formed at one end of the limiting plate facing the pawl.

[0014] In the above-mentioned escalator safety braking system, the trigger member includes a trigger plate installed on the connecting rod, and the trigger plate passes through the limiting groove of the limiting plate.

[0015] In the above-mentioned escalator safety braking system, the partial projection of the trigger switch on the limit plate falls into the limit groove.

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

[0017] In the utility model, the electromagnet has and is only provided with a spring for pushing the traction component to reset, the controller is arranged in the chassis of the machine room, and the trigger switch is arranged outside the electromagnet. In this way, signal interference between the trigger switch and the controller can be avoided, thereby ensuring that the electromagnet can work stably and extending the service life of the electromagnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the escalator safety brake system in the first embodiment.

[0019] Figure 2 yes Figure 1 Schematic diagram of the structure from another perspective.

[0020] Figure 3 It is a structural schematic diagram of the escalator safety brake system in the second embodiment.

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0022] Figure 5 It is a schematic diagram of the internal structure of an electromagnet. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1 — Figure 5As shown, the utility model provides an escalator safety brake system including a brake frame 100, a pawl 110, an electromagnet 200, a traction assembly 300, a spring 210, a trigger switch 120, a trigger member 400 and a controller (not marked in the figure).

[0025] A pawl 110 is hinged on the brake frame 100, and the pawl 110 can limit the rotation of the main shaft (not marked in the figure) of the traction machine (not marked in the figure) in the escalator machine room (not marked in the figure). The brake frame 100 is provided with an electromagnet 200, and a traction assembly 300 that drives the pawl 110 to rotate is movably provided on the electromagnet 200. A spring 210 is provided in the electromagnet 200 to push the traction assembly 300 to reset. A trigger switch 120 is provided on the brake frame 100, and the traction assembly 300 is movably provided on the electromagnet 200. 00 is provided with a trigger member 400 corresponding to the trigger switch 120, and a controller (not marked in the figure) for controlling the electromagnet 200 is provided in the machine room of the escalator, and the trigger switch 120 is electrically connected to the controller. A mounting frame 130 for mounting the electromagnet 200 is provided on the brake frame 100, and the trigger switch 120 is mounted on the mounting frame 130. When the controller controls the electromagnet 200 to be energized, the electromagnet 200 pulls the traction assembly 300 to move in the direction of the electromagnet. At the same time, due to the ratchet 11 0 is hinged to the brake frame 100, and the traction assembly 300 is hinged to the pawl 110, so that the traction assembly 300 can drive the pawl 110 to rotate relative to the brake frame 100, and when the end of the pawl 110 is located below the top edge of the brake frame 100, the trigger member 400 contacts the trigger switch 120, and the electromagnet 200 controls the traction assembly 300 to stop moving, and the pawl 110 will no longer block the main shaft of the traction machine, so that the traction machine can smoothly drive the main shaft to rotate; when the controller controls the electromagnetic When the iron 200 loses power, the traction assembly 300 is only subjected to the elastic force of the spring 210, so that the traction assembly 300 pushes the pawl 110 to rotate relative to the brake frame 100, and the trigger member 400 is separated from the trigger switch 120. When the end of the pawl 110 extends out of the top of the brake frame 100, the pawl 110 will clamp the main shaft of the traction machine, so that the main shaft of the traction machine can be braked. In this way, it can be ensured that the main shaft rotates automatically when the traction machine is in a stopped state or a damaged state.

[0026] In the prior art, most electromagnets 200 are internally provided with a controller for controlling their operation and a trigger switch 120. In the present invention, the electromagnet 200 is internally provided with only a spring 210 for pushing the traction assembly 300 to reset. The controller is disposed in a chassis of a machine room (not marked in the figure), and the trigger switch 120 is disposed outside the electromagnet 200. In this way, signal interference between the trigger switch 120 and the controller can be avoided, thereby ensuring that the electromagnet 200 can work normally.

[0027] The traction assembly 300 includes a traction rod 310 hinged to the pawl 110, and the traction rod 310 is connected to the electromagnet 200 via a connecting rod 320. An iron rod 220 is movably inserted into the electromagnet 200, and an anti-skid groove 221 is provided on the side of the iron rod 220 near one end of the connecting rod 320. During installation, people need to connect the iron rod 220 and the connecting rod 320 through a nut, and connect the connecting rod 320 and the traction rod 310 through a nut. During this process, people can clamp the anti-skid groove 221 with a wrench to prevent the iron rod 220 from rotating during the connection with the connecting rod 320, and secondly, to prevent the wrench from slipping.

[0028] Embodiment 1

[0029] like Figure 1 — Figure 2 As shown, this embodiment is a first structure of the trigger member 400 .

[0030] The trigger member 400 includes a trigger block 410 sleeved on the connecting rod 320, and a truncated cone block 420 is provided on one end of the trigger block 410, wherein the trigger block 410 and the truncated cone block 420 are integrally formed, and two limiting nuts 430 are threadedly connected to the connecting rod 320, one limiting nut 430 squeezes one end of the trigger block 410 away from the truncated cone block 420, and the other limiting nut 430 squeezes one end of the truncated cone block 420 away from the trigger block 410. When the connecting rod 320 moves, The trigger block 410 and the truncated cone block 420 are both mounted on the connecting rod 320 so that the trigger block 410 and the truncated cone block 420 can move with the connecting rod 320, and when the inclined surface of the truncated cone block 420 contacts the trigger switch 120, the trigger switch 120 will generate an electrical signal to indicate that the traction component 300 has moved into place, that is, one end of the pawl 110 extends out of the top edge of the brake frame 100, and thereafter, the signal will be transmitted to the controller to enable the electromagnet 200 to maintain the traction component 300 stationary.

[0031] Embodiment 2

[0032] like Figure 3 — Figure 4 As shown, this embodiment is a first structure of the trigger member 400 .

[0033] The mounting frame 130 is provided with a limit plate 140 for mounting the trigger switch 120. The limit plate 140 has a limit groove 141 at one end thereof facing the pawl 110. The trigger member 400 includes a trigger plate 440 mounted on the connecting rod 320. The trigger plate 440 passes through the limit groove 141 of the limit plate 140. The partial projection of the trigger switch 120 on the limit plate 140 falls into the limit groove 141. When the connecting rod 320 moves, the trigger plate 440 is mounted on the connecting rod 320 so that the trigger plate 440 can move with the connecting rod 320. 20 moves, and when the trigger plate 440 contacts the trigger switch 120, the trigger switch 120 will generate an electrical signal to indicate that the traction assembly 300 has moved into place, that is, one end of the pawl 110 extends out of the top edge of the brake frame 100. Thereafter, the signal will be transmitted to the controller to enable the electromagnet 200 to maintain the traction assembly 300 stationary. During this process, the trigger plate 440 always passes through the limiting groove 141 of the limiting plate 140 to ensure that the trigger plate 440 can stably contact with the trigger switch 120, thereby ensuring that the trigger switch 120 can work normally.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 escalator safety braking system, characterized in that: include: A brake frame, a ratchet is hinged on the brake frame, an electromagnet is provided on the brake frame, a traction assembly for driving the ratchet to rotate is movably provided on the electromagnet, and a spring for pushing the traction assembly to reset is provided in the electromagnet; The trigger switch is arranged on the brake frame, the traction assembly is provided with a trigger member corresponding to the trigger switch, and the machine room of the escalator is provided with a controller for controlling the electromagnet.

2. An escalator safety brake system according to claim 1, characterized in that: The brake frame is provided with a mounting frame for mounting the electromagnet, and the trigger switch is mounted on the mounting frame.

3. An escalator safety brake system according to claim 2, characterized in that: The traction assembly comprises a traction rod hinged to the pawl, and the traction rod is connected to the electromagnet via a connecting rod.

4. The escalator safety brake system according to claim 3, characterized in that: An iron rod is movably inserted into the electromagnet, and an anti-slip groove is provided on the side surface of the iron rod close to one end of the connecting rod.

5. The escalator safety brake system according to claim 3, characterized in that: The trigger member comprises a trigger block sleeved on the connecting rod, and a truncated cone block is arranged on one end of the trigger block, wherein the trigger block and the truncated cone block are integrally formed.

6. The escalator safety brake system according to claim 5, characterized in that: The connecting rod is threadedly connected with two limiting nuts, one of which squeezes the end of the trigger block away from the truncated cone block, and the other limiting nut squeezes the end of the truncated cone block away from the trigger block.

7. The escalator safety brake system according to claim 3, characterized in that: The mounting bracket is provided with a limit plate for mounting the trigger switch.

8. An escalator safety brake system according to claim 7, characterized in that: The limiting plate has a limiting groove at one end facing the pawl.

9. The escalator safety brake system according to claim 8, characterized in that: The trigger member comprises a trigger plate mounted on the connecting rod, and the trigger plate passes through a limiting groove of the limiting plate.

10. The escalator safety brake system according to claim 8, characterized in that: The partial projection of the trigger switch on the limiting plate falls into the limiting groove.

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