Elevator safety brake trigger

Abstract

The utility model belongs to the field of elevator accessory manufacturing, and particularly relates to an elevator safety braking trigger which comprises a brake and a trigger body, the trigger body is arranged on the brake and is in control connection with the brake, an input shaft is arranged on the trigger body, and a first connecting rod is fixedly arranged on the input shaft in the radial direction. The end, away from the input shaft of the trigger, of the first connecting rod is rotationally connected with a second connecting rod. The end, back to the first connecting rod, of the second connecting rod is rotationally connected with a connecting plate. According to the elevator safety braking trigger, the mode that the first connecting rod and the second connecting rod are arranged on the output shaft of the brake in a combined mode is adopted, and the elevator safety braking trigger is designed; the first connecting rod and the second connecting rod can transmit the sudden descending speed of the elevator to the input shaft of the trigger, so that the brake is triggered to achieve braking, and the problem of how to suddenly brake the elevator when the elevator suddenly descends is solved.

Description

Technical Field

[0001] The present application belongs to the field of elevator parts manufacturing, specifically an elevator safety brake trigger. Background Art

[0002] When the suspension rope of an elevator breaks or becomes loose, it may suddenly drop and cause an accident. Therefore, it is necessary to design a brake that can stop the elevator suddenly when it drops, thereby ensuring the safety of the elevator. Utility Model Content

[0003] The purpose of this application is to address the shortcomings of the existing technology and to design an elevator safety brake trigger by combining a first connecting rod and a second connecting rod on the output shaft of the trigger. When in use, after the elevator car is connected to the connecting plate on the brake body, the first connecting rod and the second connecting rod can transmit the speed of the sudden descent of the elevator to the input shaft of the trigger, thereby triggering the brake to achieve braking, solving the problem of how to brake the elevator suddenly when it suddenly descends.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] An elevator safety brake trigger includes a brake and a trigger. The brake is provided with the trigger, and the trigger is control-connected to the brake. The trigger is provided with an input shaft, and a first connecting rod is radially fixed on the input shaft. The end of the first connecting rod away from the input shaft of the trigger is rotatably connected to a second connecting rod, and the end of the second connecting rod facing away from the first connecting rod is rotatably connected to a connecting plate.

[0006] Preferably, the trigger includes a bottom shell, the brake includes a holding brake, the holding brake is fixedly connected to the first connecting rod at a position away from the second connecting rod, the input shaft is rotatably arranged in the bottom shell, a torsion spring is coaxially provided on the input shaft in the bottom shell, one torsion arm of the torsion spring is fixedly connected to the input shaft, and the other torsion arm is fixedly connected to the bottom shell, a rotating wheel is coaxially provided on the input shaft, and a press switch for turning on the holding brake is fixedly provided in the bottom shell, the pressing portion of the press switch is in sliding contact with the circumferential surface of the rotating wheel, and a notch is provided on the circumferential surface of the rotating wheel to cooperate with the pressing portion.

[0007] Preferably, both ends of the input shaft pass through the outside of the bottom shell, and each end of the input shaft is radially fixedly connected to a first connecting rod.

[0008] Preferably, the cross section of the input shaft is rectangular, and the runner is provided with a rectangular hole that matches the input shaft.

[0009] Preferably, the notch is open-type, a roller is provided at the top end of the pressing portion, and the circumferential surface of the roller is tangent to the circumferential surface of the rotating wheel.

[0010] Preferably, the depth of the notch is smaller than the radius of the roller.

[0011] Preferably, the width of the notch is greater than the diameter of the roller.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The present application adopts a method of combining a first connecting rod and a second connecting rod on the output shaft of the brake to design an elevator safety brake trigger. When in use, after the elevator car is connected to the connecting plate on the brake body, the first connecting rod and the second connecting rod can transmit the speed of the sudden descent of the elevator to the input shaft of the trigger, thereby triggering the brake to achieve braking, solving the problem of how to brake the elevator suddenly when it suddenly descends.

[0014] 2. In the present application, at the moment when the car falls, the first connecting rod, the second connecting rod and the connecting plate are triggered to rotate the input shaft, and the input shaft drives the wheel to rotate, so that the pressing part of the pressing switch of the brake moves to the notch, so that the pressing part is not pressed, and the brake is opened, thereby clamping the track.

[0015] 3. The torsion spring in this application is mainly provided to enable the input shaft to return to its original state when no external force is applied, that is, the portion without a notch on the rotation is in close contact with the pressing portion.

[0016] 4. This application connects the brake and the elevator through two first connecting rods, two second connecting rods, and two connecting plates, making the connection between the brake and the elevator more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of this application

[0018] Figure 2 This is a schematic diagram showing the interior of the bottom shell in this application;

[0019] Figure 3 This is a schematic diagram of the structure of the runner in this application;

[0020] Figure 4 This is a schematic diagram of the scenario when this application is in use.

[0021] Among them: 1. Input shaft; 2. First connecting rod; 3. Second connecting rod; 4. Connecting plate; 5. Bottom shell; 6. Holding brake; 7. Torsion spring; 8. Rotating wheel; 9. Push switch; 10. Notch; 11. Rectangular hole; 12. Roller; 13. Car; 14. Track. DETAILED DESCRIPTION

[0022] See also Figure 1-4 An elevator safety brake trigger includes a brake and a trigger. The brake is provided with the trigger, and the trigger is controlled and connected to the brake. The trigger is provided with an input shaft 1, and a first connecting rod 2 is radially fixed on the input shaft. The end of the first connecting rod 2 away from the input shaft 1 of the trigger is rotatably connected to the second connecting rod 3, and the end of the second connecting rod 3 facing away from the first connecting rod 2 is rotatably connected to the connecting plate 4.

[0023] In this application, during use, the entire brake trigger and the elevator car 13 move (downward or upward) along the elevator track 14. When the car 13 falls due to loosening or breaking of the car 13's suspension rope, the entire brake trigger continues to move relative to the track 14 at its original speed (the entire brake trigger and the car do not share the same suspension rope). Therefore, the car 13 also moves relative to the entire brake trigger. This pulls the trigger's input shaft 1 through the connecting plate 4, the first connecting rod 2, and the second connecting rod 3, causing the input shaft 1 to rotate, thereby triggering the brake. This brake then applies a holding brake, which means the car is stationary relative to the elevator track 14 (and, of course, relative to the ground). The brake, through the first connecting rod 2, the second connecting rod 3, and the connecting plate 4, also holds the car 13 stationary. This provides protection for the car 13. This rotational connection between the first connecting rod 2 and the second connecting rod 3 allows the brake trigger to be positioned relatively close to the elevator during normal operation, saving space.

[0024] As a preferred embodiment, the brake includes a bottom shell 5, and the brake includes a holding brake 6. The input shaft 1 is rotatably arranged in the bottom shell 5, and the holding brake 6 is fixedly connected to the first connecting rod 2 away from the second connecting rod 3. A torsion spring 7 is coaxially provided on the input shaft 1 in the bottom shell 5, and one torsion arm of the torsion spring 7 is fixedly connected to the input shaft 1, and the other torsion arm is fixedly connected to the bottom shell 5. A wheel 8 is coaxially provided on the input shaft 1, and a press switch 9 for turning on the holding brake is fixedly provided in the bottom shell 5. The pressing part of the press switch 9 is in sliding contact with the circumferential surface of the wheel 8, and a notch 10 is provided on the circumferential surface of the wheel 8 to cooperate with the pressing part.

[0025] With this design, at the moment the car 13 falls, the first connecting rod 2, the second connecting rod 3, and the connecting plate 4 trigger the input shaft 1 to rotate, which in turn drives the runner 8 to rotate, thereby moving the pressing portion of the pressing switch 9 of the holding brake to the notch 10, so that the pressing portion is not pressed, and the holding brake is released, thereby clamping the rail 14. The provision of the torsion spring 7 is mainly to enable the input shaft 1 to return to its original state in the absence of external force, that is, the portion of the rotating wheel 8 without the notch 10 is in close contact with the pressing portion.

[0026] As a preferred embodiment, both ends of the input shaft 1 extend through the outside of the bottom housing 5, and a first connecting rod 2 is radially fixedly connected to each end of the input shaft 1. Thus, the brake is connected to the elevator through two first connecting rods 2, two second connecting rods 3, and two connecting plates 4, making the connection between the brake and the elevator more secure.

[0027] As a preferred embodiment, the cross section of the input shaft 1 is rectangular, and the runner 8 is provided with a rectangular hole 11 that matches the input shaft 1. The rectangular block 11 is provided to drive the runner 8 to rotate together with the input shaft 1 during rotation.

[0028] As a preferred embodiment, the notch 10 is open, and a roller 12 is provided at the top of the pressing portion, the circumference of the roller 12 being tangent to the circumference of the wheel 8. This arrangement facilitates the roller 12 to roll freely into and out of the notch 10.

[0029] As a preferred embodiment, the depth of the notch 10 is smaller than the radius of the roller 12 .

[0030] As a preferred embodiment, the width of the notch 10 is greater than the diameter of the roller 12 .

Claims

1. An elevator safety brake trigger, characterized in that: The invention comprises a brake and a trigger, wherein the brake is provided with the trigger, the trigger is control-connected with the brake, the trigger is provided with an input shaft (1), the input shaft is provided with a first connecting rod (2) which is radially fixed, the first connecting rod (2) is rotatably connected to an end of the input shaft (1) away from the trigger with a second connecting rod (3), and the second connecting rod (3) is rotatably connected to an end facing away from the first connecting rod (2) with a connecting plate (4).

2. An elevator safety brake trigger according to claim 1, characterized in that: The brake comprises a bottom shell (5), the brake comprises a holding brake (6), the holding brake (6) is fixedly connected to the first connecting rod (2) at a position away from the second connecting rod (3), the input shaft (1) is rotatably arranged in the bottom shell (5), a torsion spring (7) is coaxially arranged on the input shaft (1) in the bottom shell (5), one torsion arm of the torsion spring (7) is fixedly connected to the input shaft (1), and the other torsion arm is fixedly connected to the bottom shell (5), a rotating wheel (8) is coaxially arranged on the input shaft (1), a pressing switch (9) for turning on the holding brake is fixedly arranged in the bottom shell (5), the pressing portion of the pressing switch (9) is in sliding contact with the circumferential surface of the rotating wheel (8), and a notch (10) matching the pressing portion is provided on the circumferential surface of the rotating wheel (8).

3. An elevator safety brake trigger according to claim 2, characterized in that: Both ends of the input shaft (1) penetrate the outside of the bottom shell (5), and each end of the input shaft (1) is radially fixedly connected to a first connecting rod (2).

4. An elevator safety brake trigger according to claim 2, characterized in that: The input shaft (1) has a rectangular cross section, and the rotating wheel (8) is provided with a rectangular hole (11) that matches the input shaft (1).

5. The elevator safety brake trigger according to claim 2, characterized in that: The notch (10) is open-type, and a roller (12) is provided at the top end of the pressing portion, and the circumferential surface of the roller (12) is tangent to the circumferential surface of the rotating wheel (8).

6. An elevator safety brake trigger according to claim 5, characterized in that: The depth of the notch (10) is smaller than the radius of the roller (12).

7. An elevator safety brake trigger according to claim 6, characterized in that: The width of the notch (10) is greater than the diameter of the roller (12).

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