Safety elevator brake

Abstract

The utility model provides a safety type elevator brake which comprises a brake rod, a traction machine, a brake wheel and a magnetic device, brake arms are arranged at the two ends of the magnetic device, telescopic mechanisms are connected to the brake arms in a transmission mode, the telescopic directions of the telescopic mechanisms extend along the axis of the magnetic device, and brake shoes are detachably installed on the telescopic mechanisms; according to the elevator braking device, when an elevator is braked, the telescopic mechanism can apply pressure to the brake shoe to improve the friction force with the brake wheel, so that the friction force between the brake shoe and the brake wheel can meet the elevator braking requirement when the brake shoe and the brake wheel are abraded to a preset degree and an initial gap is large, the service life of the brake shoe and the brake wheel is prolonged, and the service life of the elevator is prolonged. And meanwhile, the safety is improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of elevators, and in particular to a safety type elevator brake. Background Art

[0002] The principle of the elevator brake is: when the power is on, the magnet pushes the brake shoe so that there is a certain gap between the brake shoe and the brake wheel, and the traction machine can rotate normally to pull the elevator to run; when the power is off, the brake shoe abuts against the brake wheel under the action of the spring of the brake rod to lock it, the traction machine stops rotating, and the elevator stops running; so the braking effect of the elevator brake depends entirely on the friction between the brake shoe and the brake wheel, and the force of the spring on the brake rod pushing the brake shoe is fixed, but after long-term use, the brake shoe and the brake wheel will wear out, and the distance between the two will change, which will cause the friction between the brake shoe and the brake wheel to decrease, and the braking effect will decrease, making it impossible to guarantee safety. Utility Model Content

[0003] 1. Technical problems to be solved by the utility model:

[0004] The utility model provides a safety type elevator brake, which is used to solve the technical problems existing in the above background technology.

[0005] 2. Technical solution:

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a safety elevator brake, including a brake rod, a traction machine, a brake wheel and a magnet, brake arms are provided at both ends of the magnet, and a telescopic mechanism is connected to the brake arm in a transmission manner. The telescopic direction of the telescopic mechanism extends along the axis of the magnet, and a brake shoe is detachably installed thereon.

[0007] Furthermore, the telescopic mechanism includes a telescopic motor, a telescopic plate is fixedly installed on the telescopic end of the telescopic motor, one side of the telescopic plate is detachably connected to the brake shoe, and the other side is fixedly installed with a guide rod, and the guide rod is slidably connected to the telescopic plate.

[0008] Furthermore, an inverted U-shaped plate is fixedly installed at the bottom of the brake arm, a touch switch is provided on the inner side of the U-shaped plate, and the touch switch is connected to the telescopic motor circuit.

[0009] Furthermore, a slot and a first positioning slot are respectively provided on adjacent sides of the telescopic plate, the brake shoe is inserted into the slot, and the second positioning slot provided thereon is coaxially matched with the first positioning slot, and positioning bolts are assembled in the two coaxial positioning slots.

[0010] Furthermore, a connecting arm is fixedly mounted on the traction machine housing, a wiping block is provided on the connecting arm, and the wiping block is in contact with the brake wheel.

[0011] 3.Beneficial effects:

[0012] The technical solution provided by the utility model has the following beneficial effects compared with the existing technology: when the elevator is braking, the telescopic mechanism will apply pressure to the brake shoe, increasing the friction with the brake wheel, so that the brake shoe and the brake wheel will be worn to a predetermined degree. When the initial gap is large, the friction between the two can also be guaranteed to meet the elevator braking requirements, which not only extends the service life of the brake shoe and the brake wheel, but also improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the explosion structure of the telescopic plate and brake shoe of the utility model.

[0016] Reference numerals:

[0017] 1. Brake rod; 2. Traction machine; 3. Brake wheel; 4. Magnet; 5. Brake arm; 6. Telescopic mechanism; 601. Telescopic motor; 602. Telescopic plate; 6021. Slot; 6022. First positioning slot; 603. Guide rod; 7. Brake shoe; 701. Second positioning slot; 8. U-shaped plate; 9. Touch switch; 10. Positioning bolt; 11. Connecting arm; 12. Wiping block. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0021] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," "provided with," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0022] Refer to the attached Figure 1-3 A safety elevator brake includes a brake rod 1, a traction machine 2, a brake wheel 3 and a magnetizer 4. Brake arms 5 are provided at both ends of the magnetizer 4. A telescopic mechanism 6 is transmission-connected to the brake arm 5. The telescopic direction of the telescopic mechanism 6 extends along the axis of the magnetizer 4, and a brake shoe 7 is detachably mounted thereon.

[0023] In this embodiment, when the elevator is braking, the brake arm 5 moves under the action of the spring force of the brake rod 1 until the brake shoe 7 engages with the brake wheel 3. At the same time, the telescopic mechanism 6, which is transmission-connected to the brake arm 5, applies pressure to the brake shoe 7, thereby increasing the friction with the brake wheel 3, so that the brake shoe 7 and the brake wheel 3 are worn to a predetermined degree. When the initial gap is large, the friction between the two can also be guaranteed to meet the elevator braking requirements, which not only extends the service life of the brake shoe 7 and the brake wheel 3, but also improves safety.

[0024] The telescopic mechanism 6 includes a telescopic motor 601, and a telescopic plate 602 is fixedly installed on the telescopic end of the telescopic motor 601. One side of the telescopic plate 602 is detachably connected to the brake shoe 7, and the other side is fixedly installed with a guide rod 603. The guide rod 603 and the telescopic plate 602 are slidably connected.

[0025] An inverted U-shaped plate 8 is fixedly mounted on the bottom of the brake arm 5 , and a touch switch 9 is provided on the inner side of the U-shaped plate 8 , which is connected to the circuit of the telescopic motor 601 .

[0026] In this embodiment, Figure 2 Taking the shown position of the left telescopic mechanism 6 as a reference, the brake arm 5 moves to the right under the action of the spring force of the brake rod 1, and the brake shoe 7 moves synchronously to engage with the brake wheel 3. At the same time, the left inner side of the U-shaped plate 8 will contact the left side of the touch switch 9, so that the telescopic mechanism 6 starts to extend to the right, and the telescopic plate 602 cooperates with the guide rod 603 to slide on the telescopic plate 602, which can increase the pressure between the brake shoe 7 and the brake wheel 3, thereby increasing the friction between the two; similarly, the magnetor 4 can drive the above-mentioned restoration after being energized.

[0027] A slot 6021 and a first positioning slot 6022 are respectively provided on adjacent sides of the telescopic plate 602. The brake shoe 7 is inserted into the slot 6021. The second positioning slot 701 and the first positioning slot 6022 provided thereon are coaxially matched. Positioning bolts 10 are assembled in the two coaxial positioning slots.

[0028] In this embodiment, after the brake shoe 7 is inserted into the slot 6021, the second positioning groove 701 will be coaxially matched with the first positioning groove 6022, and then the positioning bolt 10 is assembled into the two coaxial positioning grooves to complete the installation of the brake shoe 7. The disassembly can be achieved in the same way.

[0029] A connecting arm 11 is fixedly mounted on the outer shell of the traction machine 2 . A wiping block 12 is provided on the connecting arm 11 . The wiping block 12 is in contact with the brake wheel 3 .

[0030] In this embodiment, when the traction machine 2 drives the elevator, the brake wheel 3 rotates synchronously and rubs against the wiping block 12, thereby removing the oil stains on it, so as to prevent the oil stains from affecting the brake wheel 3 and the brake shoe 7 from slipping during friction.

[0031] The above-mentioned embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

[0032] It should be noted that the above content belongs to the technical knowledge scope of the inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute prior art.

Claims

1. A safety elevator brake, comprising a brake rod (1), a traction machine (2), a brake wheel (3) and a magnet (4), characterized in that: Braking arms (5) are provided at both ends of the magnet (4), and a telescopic mechanism (6) is transmission-connected to the brake arms (5). The telescopic direction of the telescopic mechanism (6) extends along the axis of the magnet (4), and a brake shoe (7) is detachably mounted thereon.

2. A safety elevator brake according to claim 1, characterized in that: The telescopic mechanism (6) comprises a telescopic motor (601), a telescopic plate (602) being fixedly mounted on the telescopic end of the telescopic motor (601), one side of the telescopic plate (602) being detachably connected to the brake shoe (7), and the other side of the telescopic plate (602) being fixedly mounted with a guide slide rod (603), the guide slide rod (603) being slidably connected to the telescopic plate (602).

3. A safety elevator brake according to claim 2, characterized in that: An inverted U-shaped plate (8) is fixedly mounted on the bottom of the brake arm (5), a touch switch (9) is arranged inside the U-shaped plate (8), and the touch switch (9) is connected to the circuit of the telescopic motor (601).

4. A safety elevator brake according to claim 2, characterized in that: The telescopic plate (602) is provided with a slot (6021) and a first positioning slot (6022) on adjacent sides, respectively. The brake shoe (7) is inserted into the slot (6021), and the second positioning slot (701) provided thereon is coaxially matched with the first positioning slot (6022). Positioning bolts (10) are installed in the two coaxial positioning slots.

5. A safety elevator brake according to claim 1, characterized in that: A connecting arm (11) is fixedly mounted on the outer shell of the traction machine (2), a wiping block (12) is provided on the connecting arm (11), and the wiping block (12) is in contact with the brake wheel (3).

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