Electric trigger structure of speed limiter

Abstract

The utility model discloses an electric trigger structure of a speed limiter, and relates to the technical field of elevator speed limiters. A center shaft is transversely arranged in a box body, and a rope wheel is rotatably connected to the center shaft; the brake plate is parallel to the rope wheel, the middle of the brake plate is rotatably connected with the center shaft, and a clamping block is arranged on the edge of the brake plate. The driving piece is in transmission connection with the brake plate and is fixedly connected with the box body; the flail block is arranged between the brake plate and the rope wheel, and a clamping hook is arranged at one end of the flail block; the trigger plate is arranged on the side, close to the rope wheel, of the brake plate, and a brake piece is fixedly connected to the brake plate. By arranging the brake part, the throwing block and the brake plate, when an elevator needs to be actively braked, the brake part is driven to drive the throwing block to be connected with the brake plate in a clamped mode, then a rope wheel can be braked, a rope on the rope wheel can be braked, and effective manual brake on the elevator is achieved; and the elevator can be braked during accelerated movement or other unsafe movement of the elevator.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator speed limiters, and more specifically, to an electric trigger structure of a speed limiter. Background Art

[0002] An elevator speed limiter is one of the safety control components in the elevator safety protection system. It monitors and controls the speed of the car at any time. When the car runs at an overspeed for any reason during the operation of the elevator, that is, when it reaches 115% of the rated speed of the elevator, or even when there is a risk of falling, it can timely send out a digital signal to cut off the power supply circuit and brake the traction machine. If the elevator still cannot be braked and the speed continues to increase, the speed limiter will drive the mechanical brake to forcibly stop the car, thus avoiding accidents of casualties and equipment damage.

[0003] The existing elevator speed limiters include a rope pulley, and a safety rope is arranged on the rope pulley. One end of the safety rope is fixed on the car body of the elevator, and the other end is respectively fixed on the car body of the elevator through the rope pulley and the tension pulley, and this end of the safety rope is also connected to the safety clamp of the elevator. When the elevator runs within the normal speed range, the safety rope circulates between the rope pulley and the tension pulley and does not affect the operation of the elevator. Once the elevator runs at an overspeed, the speed limiter forcibly brakes the elevator. The existing elevator speed limiters in the prior art all perform passive braking on the elevator after the elevator runs at an overspeed and reaches a certain speed, and cannot brake the elevator during the acceleration process of the elevator. It often requires a large braking force to brake the elevator and cannot perform active braking.

[0004] Therefore, how to provide an electric trigger structure of a speed limiter that can actively brake the elevator during the acceleration process through manual control is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides an electric trigger structure of a speed limiter, aiming to solve the problems in the above background art and realizing active braking of the elevator during the acceleration process through manual control.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An electric trigger structure of a speed limiter, comprising:

[0008] A box body, a central shaft is horizontally arranged in the box body, and a rope pulley is rotatably connected to the central shaft;

[0009] A brake plate, the brake plate is parallel to the rope pulley, the middle part of the brake plate is rotatably connected to the central shaft, and a clamping block is arranged at the edge of the brake plate;

[0010] A driving member, which is in transmission connection with the brake plate and fixedly connected to the box body;

[0011] A flyweight, which is arranged between the brake plate and the rope pulley. The middle part of the flyweight is rotatably connected to the rope pulley, and a hook is arranged at one end of the flyweight;

[0012] A trigger plate, which is arranged on the side of the brake plate close to the rope pulley. The trigger plate slides radially along the brake plate. A braking member is fixedly connected to the brake plate, and the braking member drives the trigger plate to slide;

[0013] Wherein, the trigger plate cooperates with the flyweight. When the trigger plate moves towards the edge of the brake plate, the trigger plate pushes the flyweight to rotate, and the locking block cooperates with the hook.

[0014] Further, a pin shaft is arranged on the side of the flyweight close to the hook. The pin shaft is perpendicular to the surface of the flyweight, and the pin shaft cooperates with the side wall of the trigger plate.

[0015] Further, the trigger plate includes a sliding member and a driving plate. The sliding member is perpendicular to the driving plate. The driving plate cooperates with the pin shaft. A radial sliding groove is arranged on the brake plate, and the sliding member penetrates through the brake plate and is slidably connected in the sliding groove.

[0016] Further, the braking member includes a pull plate and an electromagnet. The electromagnet is connected to the side wall of the brake plate far from the rope pulley, the pull plate is connected to the electromagnet, and the other end of the pull plate is connected to the end of the sliding member far from the driving plate.

[0017] Further, a plurality of flyweights are arranged, and the plurality of flyweights are centrosymmetrically arranged around the central axis. The plurality of flyweights are connected by a connecting rod and rotate synchronously.

[0018] Further, a return spring is arranged on the flyweight, and the end of the return spring far from the flyweight is connected to the rope pulley.

[0019] Further, the driving member includes a sliding rod, a driving rod and a driving motor. A driving groove is arranged on the brake plate radially along the brake plate. The sliding rod is slidably connected in the driving groove. One end of the driving rod is connected to the sliding rod, the other end of the driving rod is connected to the driving motor, and the driving motor is connected to the box body.

[0020] Further, the box body includes an L-shaped plate, a back plate and a cover plate. The bottom of the L-shaped plate is arranged at the bottom of the rope pulley. The side wall of the L-shaped plate is arranged on the central axis on the side of the brake plate away from the rope pulley. The back plate is arranged on the central axis on the side of the rope pulley away from the brake plate. The bottom of the back plate is connected to the bottom of the L-shaped plate. The cover plate covers the tops of the rope pulley and the brake plate, and the cover plate is connected to the back plate.

[0021] As can be seen from the above technical solutions, compared with the prior art, the present utility model discloses a speed limiter electric trigger structure. By arranging a braking member, a throwing block and a brake plate, when it is necessary to actively brake the elevator, the braking member can be driven, and the braking member drives the throwing block to be clamped with the brake plate, so as to be able to brake the rope pulley, and can brake the rope on the rope pulley, realizing effective manual braking of the elevator, and can brake the elevator when the elevator accelerates or moves in other unsafe ways. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is the overall structure diagram of a speed limiter electric trigger structure provided by the present utility model;

[0024] Figure 2 It is the schematic diagram of the position of the throwing block of a speed limiter electric trigger structure provided by the present utility model;

[0025] Figure 3 It is the schematic diagram of the side of the brake plate close to the rope pulley of a speed limiter electric trigger structure provided by the present utility model.

[0026] Wherein: 1 is the box body; 101 is the L-shaped plate; 102 is the back plate; 103 is the cover plate; 2 is the central axis; 3 is the rope pulley; 4 is the brake plate; 5 is the clamping block; 6 is the driving member; 601 is the sliding rod; 602 is the driving rod; 603 is the driving motor; 7 is the throwing block; 8 is the clamping hook; 9 is the trigger plate; 901 is the sliding member; 902 is the driving plate; 10 is the braking member; 1001 is the pulling plate; 1002 is the electromagnet; 11 is the pin shaft; 12 is the radial sliding groove; 13 is the connecting rod; 14 is the return spring; 15 is the driving groove. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Referring to Figures 1-3 , an electric trigger structure for a speed limiter is disclosed in an embodiment of the present utility model, including:

[0029] A box body 1, a central shaft 2 is horizontally arranged in the box body 1, and a rope wheel 3 is rotatably connected to the central shaft 2; in this embodiment, the box body 1 is connected to the main structure of the elevator, the box body 1 is used to support and connect the speed limiter, and the box body 1 can also protect and dust-proof the rope wheel 3 and the brake plate 4.

[0030] A brake plate 4, the brake plate 4 is parallel to the rope wheel 3, the middle part of the brake plate 4 is rotatably connected to the central shaft 2, and a clamping block 5 is arranged at the edge of the brake plate 4; a driving member 6, the driving member 6 is in transmission connection with the brake plate 4, and the driving member 6 is fixedly connected to the box body 1; in this embodiment, the brake plate 4 is disc-shaped, the brake plate 4 and the rope wheel 3 have the same size, the rope wheel 3 and the brake plate 4 are parallel to each other, the brake plate 4 rotates or remains stationary under the action of the driving member 6, the driving member 6 can control the brake plate 4 to remain stationary when the rope wheel 3 rotates, and when braking the rope wheel 3, the driving member 6 drives the brake plate 4 to rotate, so as to release the braking effect of the clamping block 5 on the rope wheel 3 and release the braking effect of the brake plate 4 on the rope wheel 3.

[0031] A swing block 7, the swing block 7 is arranged between the brake plate 4 and the rope wheel 3, the middle part of the swing block 7 is rotatably connected to the rope wheel 3, and a hook 8 is arranged at one end of the swing block 7; in this embodiment, the swing block 7 rotates synchronously with the rope wheel 3, the middle part of the swing block 7 is rotatably connected to the rope wheel 3, one end of the swing block 7 has a larger mass, the other end of the swing block 7 has a smaller mass, the hook 8 is arranged at the end with a larger mass, and during use, by driving the swing block 7, when the rotational speed of the rope wheel 3 is too high, under the action of centrifugal force, the side with a larger mass will be swung towards the side away from the central shaft 2, and the hook 8 will be swung onto the clamping block 5, and the clamping block 5 will catch the hook 8, so as to realize the automatic braking of the speed limiter.

[0032] The trigger plate 9 is arranged on the side of the brake plate 4 close to the rope pulley 3. The trigger plate 9 slides radially along the brake plate 4. A brake member 10 is fixedly connected to the brake plate 4, and the brake member 10 drives the trigger plate 9 to slide. Among them, the trigger plate 9 cooperates with the flyweight 7. When the trigger plate 9 moves towards the edge of the brake plate 4, the trigger plate 9 pushes the flyweight 7 to rotate, and the locking block 5 cooperates with the catch 8. In this embodiment, the brake member 10 is controlled by an electric signal, and the brake member 10 can control the side of the flyweight 7 provided with the catch 8 to rotate towards the side away from the central axis 2, so as to be able to control the active braking and manual braking of the rope pulley 3.

[0033] A pin shaft 11 is arranged on the side of the flyweight 7 close to the catch 8. The pin shaft 11 is perpendicular to the surface of the flyweight 7, and the pin shaft 11 cooperates with the side wall of the trigger plate 9. The trigger plate 9 includes a sliding member 901 and a driving plate 902. The sliding member 901 is perpendicular to the driving plate 902, and the driving plate 902 cooperates with the pin shaft 11. A radial sliding groove 12 is arranged on the brake plate 4, and the sliding member 901 penetrates through the brake plate 4 and is slidably connected in the sliding groove. In this embodiment, the top of the sliding member 901 has a wedge angle. During the upward sliding process of the sliding frame, it gradually pushes the pin shaft 11 and the heavier side of the flyweight 7 to rotate outward towards the rope pulley 3. When active braking is not performed, the heavier side of the flyweight 7 swings towards the side close to the central axis 2 under the action of gravity and the return spring 14, and the lighter side of the flyweight 7 swings towards the side away from the central axis 2. When the rope pulley 3 rotates, the flyweight 7 approaches the trigger plate 9 from the lighter side, and the pin shaft 11 approaches the driving plate 902 from the outside of the wedge angle of the sliding frame, so that the driving plate 902 can drive the pin shaft 11 to swing.

[0034] The brake member 10 includes a pull plate 1001 and an electromagnet 1002. The electromagnet 1002 is connected to the side wall of the brake plate 4 away from the rope pulley 3, the pull plate 1001 is connected to the electromagnet 1002, and the other end of the pull plate 1001 is connected to the end of the sliding member 901 away from the driving plate 902. In this embodiment, the lifting plate 1001 can pull the sliding member 901 upward. There are two sliding members 901, and the two sliding members 901 are parallel to each other and move up and down synchronously. The electromagnet 1002 controls the up and down movement of the lifting plate 1001. The electromagnet 1002 is controlled by the controller of the elevator. The controller can control the up and down movement of the power output member of the electromagnet 1002, so as to drive the pull plate 1001 to move up and down and the driving plate 902 to move up and down.

[0035] There are multiple centrifugal weights 7, and the multiple centrifugal weights 7 are arranged centrosymmetrically around the central axis 2. The multiple centrifugal weights 7 are connected by a connecting rod 13 and rotate synchronously. A return spring 14 is arranged on the centrifugal weight 7, and one end of the return spring 14 far from the centrifugal weight 7 is connected to the rope pulley 3. In this embodiment, there are two centrifugal weights 7. One end of the connecting rod 13 is connected to the heavier end of one centrifugal weight 7, and the other end of the connecting rod 13 is connected to the lighter end of the other centrifugal weight 7. The two centrifugal weights 7 rotate synchronously. There are multiple catch blocks 5 on the brake plate 4 and six pairs are provided. Catch hooks 8 are arranged on both centrifugal weights 7, and the two catch blocks 5 cooperate with the multiple catch hooks 8.

[0036] The driving member 6 includes a sliding rod 601, a driving rod 602 and a driving motor 603. A driving groove 15 is arranged along the radial direction of the brake plate 4 on the brake plate 4. The sliding rod 601 is slidably connected in the driving groove 15. One end of the driving rod 602 is connected to the sliding rod 601, and the other end of the driving rod 602 is connected to the driving motor 603. The driving motor 603 is connected to the box body 1. In this embodiment, the driving motor 603 drives the driving rod 602 to rotate. During the rotation of the driving rod 602, the sliding rod 601 is driven to rotate around the motor. The sliding rod 601 slides in the driving groove 15 during the rotation, and thus can drive the brake plate 4 to rotate within a small range.

[0037] The box body 1 includes an L-shaped plate 101, a back plate 102 and a cover plate 103. The bottom of the L-shaped plate 101 is arranged at the bottom of the rope pulley 3. The side wall of the L-shaped plate 101 is arranged on the central axis 2 on the side of the brake plate 4 away from the rope pulley 3. The back plate 102 is arranged on the central axis 2 on the side of the rope pulley 3 away from the brake plate 4. The bottom of the back plate 102 is connected to the bottom of the L-shaped plate 101. The cover plate 103 covers the tops of the rope pulley 3 and the brake plate 4, and the cover plate 103 is connected to the back plate 102.

[0038] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, refer to the description of the method part.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A speed limiter electric trigger structure, characterized in that: include: A box body, wherein a central axis is transversely arranged in the box body, and a rope pulley is rotatably connected to the central axis; A brake plate, wherein the brake plate is parallel to the rope pulley, the middle portion of the brake plate is rotatably connected to the central axis, and a clamping block is provided at the edge of the brake plate; A driving member, the driving member is drivingly connected to the brake plate, and the driving member is fixedly connected to the box; A swing block, the swing block is arranged between the brake plate and the rope wheel, the middle part of the swing block is rotatably connected to the rope wheel, and a hook is arranged at one end of the swing block; A trigger plate, the trigger plate is arranged on a side of the brake plate close to the rope pulley, the trigger plate slides along the radial direction of the brake plate, a brake member is fixedly connected to the brake plate, and the brake member drives the trigger plate to slide; Wherein, the trigger plate cooperates with the swing block. When the trigger plate moves toward the edge of the brake plate, the trigger plate pushes the swing block to rotate, and the locking block cooperates with the locking hook.

2. The electric triggering structure of a speed limiter according to claim 1, characterized in that: A pin is arranged on one side of the swing block close to the hook, the pin is perpendicular to the surface of the swing block, and the pin cooperates with the side wall of the trigger plate.

3. The electric triggering structure of a speed limiter according to claim 2, characterized in that: The trigger plate includes a sliding member and a driving plate, the sliding member is perpendicular to the driving plate, the driving plate cooperates with the pin shaft, a radial sliding groove is arranged on the brake plate, the sliding member passes through the brake plate and is slidably connected in the sliding groove.

4. The electric triggering structure of a speed limiter according to claim 3, characterized in that: The brake member includes a pull plate and an electromagnet, the electromagnet is connected to the side wall of the brake plate away from the rope pulley, the pull plate is connected to the electromagnet, and the other end of the pull plate is connected to the end of the sliding member away from the driving plate.

5. The electric triggering structure of a speed limiter according to claim 1, characterized in that: There are multiple swing blocks, and the multiple swing blocks are centrally symmetrically arranged around the central axis. The multiple swing blocks are connected by connecting rods and rotate synchronously.

6. The electric triggering structure of a speed limiter according to claim 1, characterized in that: A return spring is arranged on the swing block, and one end of the return spring away from the swing block is connected to the rope wheel.

7. The electric triggering structure of a speed limiter according to claim 1, characterized in that: The driving member includes a sliding rod, a driving rod and a driving motor. A driving groove is arranged on the brake plate along the radial direction of the brake plate. The sliding rod is slidably connected in the driving groove. One end of the driving rod is connected to the sliding rod, and the other end of the driving rod is connected to the driving motor. The driving motor is connected to the box.

8. The electric triggering structure of a speed limiter according to claim 1, characterized in that: The box body includes an L-shaped plate, a back plate and a cover plate, the bottom of the L-shaped plate is arranged at the bottom of the rope pulley, the side wall of the L-shaped plate is arranged on the central axis of the brake plate away from the rope pulley, the back plate is arranged on the central axis of the rope pulley away from the brake plate, the bottom of the back plate is connected to the bottom of the L-shaped plate, the cover plate is arranged on the top of the rope pulley and the brake plate, and the cover plate is connected to the back plate.

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