Safety protection device for preventing accidental overspeed of elevator car

Abstract

The utility model relates to the technical field of elevator protection, in particular to a safety protection device for preventing an elevator car from being overspeed accidentally, and adopts the technical scheme that the safety protection device comprises two mounting frames, and the front ends and the rear ends of the bottoms of the opposite sides of the two mounting frames are fixedly connected through pull rods; the outer bracket is movably mounted on the opposite sides of the two mounting frames; wherein the number of the outer supports is two, the inner supports are movably installed on the opposite sides of the two outer supports, and the outer cushion blocks are fixedly installed on the two outer supports; wherein the number of the inner supports is two, and the inner cushion blocks are fixedly installed on the two inner supports; wherein the inner cushion block is matched with the outer cushion block in size. According to the utility model, the problem that the wedge block is difficult to reset when the elevator decelerates is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator protection, in particular to a safety protection device for preventing an elevator car from accidentally overspeeding. Background Art

[0002] An elevator is a permanent transport device serving specific floors within a building, with its car running on at least two rigid tracks perpendicular to the horizontal plane or inclined at an angle of less than 15° to the vertical. The safety clamp is an elevator's safety device. Under the control of the speed limiter, the elevator car is brought to an emergency stop and clamped to the guide rails if the speed exceeds the speed limit set by the speed limiter or if the suspension rope breaks or slackens. It provides effective protection for the safe operation of the elevator and is generally installed on the car frame or counterweight frame.

[0003] When the safety clamp is actually used, the guide rail is clamped by the wedge block, thereby providing a large friction force, thereby achieving the deceleration of the car. However, the two wedge blocks are movably installed on the opposite sides through the corresponding support structure. When the wedge blocks move up and clamp the guide rail, if the wedge blocks and the support structure are not installed stably, it will make it difficult to reset the wedge blocks, resulting in the safety clamp needing to be disassembled and repaired. Therefore, a safety protection device that prevents the elevator car from accidentally overspeeding is needed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a safety protection device to prevent accidental overspeeding of an elevator car, which has the advantage of reducing the maintenance demand caused by the difficulty in resetting the wedge block, and solves the problem that the wedge block is difficult to reset when the elevator is decelerating.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a safety protection device for preventing accidental overspeeding of an elevator car, comprising a mounting frame, wherein the mounting frames are two in number, and the front and rear ends of the bottoms of the two mounting frames on opposite sides are fixedly connected by a pull rod, and further comprising an external bracket;

[0006] The outer bracket is movably mounted on the opposite side of the two mounting frames;

[0007] There are two outer brackets, and the inner bracket is movably installed on the opposite side of the two outer brackets. The outer pads are fixedly installed on the two outer brackets.

[0008] There are two inner brackets, and inner pads are fixedly installed on both inner brackets;

[0009] Among them, the sizes of the inner and outer pads match.

[0010] When using a safety protection device for preventing accidental overspeeding of an elevator car in the present technical solution, when the elevator control system detects that the elevator speed exceeds the safety threshold or an emergency situation such as a broken suspension rope occurs, the deceleration mechanism is activated and the telescopic mechanism installed at the bottom of the mounting frame starts to move. One end of the telescopic mechanism is fixedly connected to the bottom of the outer bracket, and the other end is rotatably connected to the top of the mounting frame. As the telescopic mechanism extends, the bottom of the outer bracket moves inward, so that the inner pad on the inner bracket moves up along the outer pad and gradually approaches the elevator guide rail. At this time, the inner pads fixedly installed on the two inner brackets begin to clamp the guide rail. The sizes of the inner pads and the outer pads match to ensure stability during movement. One end of the sliding rod is fixedly connected to the inner bracket, and the other end is fixedly installed with a magnet block. The magnet block can be adsorbed by the mounting frame, which helps to keep the position of the inner pad unchanged under normal circumstances. As the inner pad clamps the guide rail, the friction increases and the elevator car begins to decelerate. The clamping force and friction force of the inner pad work together to eventually stop the elevator car from moving. Once the emergency situation is resolved, the telescopic mechanism can be retracted and the outer bracket is reset. At the same time, the inner bracket moves down along the slide bar under the action of gravity. The adsorption effect of the magnet block and the mounting frame helps to reset the inner pad. The slide bar slides in the slide groove, and eventually the inner bracket returns to its initial position, preparing for the next deceleration operation.

[0011] Preferably, a telescopic mechanism is fixedly installed in the middle of the bottom of the two mounting frames on opposite sides, and the tops of the two mounting frames are rotatably connected to the top of the outer bracket.

[0012] The installation of the telescopic mechanism enables the outer bracket to be dynamically adjusted as needed to adapt to emergency braking requirements in different situations. The connection between the telescopic mechanism and the mounting frame provides additional stability to ensure that the outer bracket can be dynamically adjusted during emergency braking.

[0013] Preferably, one end of the telescopic mechanism facing away from the mounting frame is fixedly connected to the bottom of the outer bracket.

[0014] One end of the telescopic mechanism is fixedly connected to the bottom of the outer bracket, which enhances the integration of the overall structure and reduces the looseness or displacement that may occur during emergency braking.

[0015] Preferably, a sliding groove is provided on the outer bracket, and a sliding rod is slidably installed in the sliding groove.

[0016] The slots on the outer bracket allow the slide bar to slide freely within them, providing greater flexibility. The design of the slots and slide bar allows precise control of the position of the inner pad, which is essential for smooth and effective braking.

[0017] Preferably, one end of the sliding rod is fixedly connected to the inner bracket, and the other end of the sliding rod is fixedly mounted with a magnet block and can be adsorbed with the mounting frame.

[0018] The magnet's attraction helps quickly reposition the inner pad after emergency braking, reducing maintenance time and complexity. The magnet's attraction to the mounting bracket provides additional safety, ensuring that the inner pad will not accidentally disengage during braking.

[0019] Preferably, the outer pad and the inner pad are both provided with mounting grooves, the outer bracket and the inner bracket are fixedly connected to the outer pad and the inner pad respectively by positioning screws, and the outer pad and the inner pad are both provided with anti-slip teeth.

[0020] The use of mounting slots and positioning screws in the outer and inner pads simplifies the installation process, making component fixation faster and more convenient. The anti-slip tooth design increases the friction between the inner pad and the guide rail, which not only improves braking efficiency, but also improves the durability and reliability of the component. The positioning screw fixation method makes the maintenance and inspection of the outer and inner brackets more convenient.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The utility model provides an outer bracket, which is movably mounted on opposite sides of two mounting frames. The outer brackets are two in number, and inner brackets are movably mounted on opposite sides of the two outer brackets. An outer pad is fixedly mounted on each of the two outer brackets. At the same time, the inner brackets are two in number, and inner pads are fixedly mounted on each of the two inner brackets. The sizes of the inner pads and outer pads match. The mounting frames are fixedly connected by a pull rod to form a stable support structure. The outer bracket is movably mounted on opposite sides of the two mounting frames, ensuring the stability and reliability of the entire device. The inner bracket is movably mounted on the outer bracket, and the inner pad is fixed on the inner bracket. The outer pad is fixed on the outer bracket and matches the size of the inner pad. This design enables the inner pad to tightly clamp the guide rail when needed, providing sufficient friction to slow down or stop the car. When the speed of the elevator car increases abnormally, the inner pad will clamp the guide rail. The matching sizes of the inner pads ensure that they can fit tightly against the guide rails, providing greater friction and thus effectively decelerating the car. The flexibility of the inner and outer brackets allows the inner pads to be quickly moved to their initial positions when needed. The close fit of the inner and outer pads ensures that the car can be quickly decelerated or stopped when needed, thereby protecting the safety of passengers and reducing the need for maintenance due to the difficulty in resetting the wedges. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the outer pad structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure between the inner bracket and the outer bracket of the utility model;

[0027] Figure 5 For the utility model Figure 4 Schematic diagram of the structure at the enlarged point.

[0028] In the figure: 1. Mounting frame; 2. Outer pad; 3. Inner pad; 4. Outer bracket; 5. Inner bracket; 6. Pull rod; 7. Positioning screw; 8. Telescopic mechanism; 9. Mounting slot; 10. Anti-slip teeth; 11. Slide slot; 12. Magnet block; 13. Slide rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] like Figures 1 to 5 As shown, the present invention provides an embodiment: a safety protection device for preventing accidental overspeeding of an elevator car, comprising a mounting frame 1, two mounting frames 1, the front and rear ends of the bottoms of the two mounting frames 1 on opposite sides being fixedly connected by a pull rod 6, and further comprising an outer bracket 4;

[0032] Specifically, an outer bracket 4 is provided and movably mounted on opposite sides of two mounting frames 1. There are two outer brackets 4, and inner brackets 5 are movably mounted on opposite sides of the two outer brackets 4. An outer pad 2 is fixedly mounted on each of the two outer brackets 4. At the same time, there are two inner brackets 5, and inner pads 3 are fixedly mounted on each of the two inner brackets 5. The sizes of the inner pads 3 and the outer pads 2 match. The mounting frames 1 are fixedly connected by a tie rod 6 to form a stable support structure. The outer bracket 4 is movably mounted on opposite sides of the two mounting frames 1, ensuring the stability and reliability of the entire device. The inner bracket 5 is movably mounted on the outer bracket 4, the inner pad 3 is fixed on the inner bracket 5, and the outer pad 2 is fixed on the outer bracket 4, matching the size of the inner pad 3. This design enables the inner pad 3 to tightly clamp the guide rail when needed, providing sufficient friction to slow down or stop the car. When the speed of the elevator car increases abnormally, the inner pad 3 will clamp the guide rail. The sizes of the inner pad 3 are matched to ensure that the inner pad 3 can fit tightly against the guide rail, providing greater friction, thereby achieving effective deceleration of the car. The flexibility of the inner bracket 5 and the outer bracket 4 allows the inner pad 3 to be quickly moved to the initial position when needed. The close fit between the inner pad 3 and the outer pad 2 ensures that the car can be quickly decelerated or stopped when needed, thereby protecting the safety of passengers and reducing the need for maintenance due to the difficulty in resetting the wedge block.

[0033] Furthermore, telescopic mechanisms 8 are fixedly installed in the middle of the bottom of the two mounting frames 1 on opposite sides, and the tops of the two mounting frames 1 are rotatably connected to the top of the outer bracket 4 respectively.

[0034] The installation of the telescopic mechanism 8 enables the outer bracket 4 to be dynamically adjusted as needed to adapt to emergency braking requirements in different situations. The connection between the telescopic mechanism 8 and the mounting frame 1 provides additional stability, ensuring that the outer bracket 4 can be dynamically adjusted during emergency braking.

[0035] Furthermore, one end of the telescopic mechanism 8 facing away from the mounting frame 1 is fixedly connected to the bottom of the outer bracket 4 .

[0036] One end of the telescopic mechanism 8 is fixedly connected to the bottom of the outer bracket 4, which enhances the integrity of the overall structure and reduces loosening or displacement that may occur during emergency braking.

[0037] Furthermore, a sliding groove 11 is formed on the outer bracket 4 , and a sliding rod 13 is slidably installed in the sliding groove 11 .

[0038] The slide groove 11 on the outer bracket 4 allows the slide rod 13 to slide freely therein, providing greater flexibility. The design of the slide groove 11 and the slide rod 13 allows the position of the inner pad 3 to be precisely controlled, which is essential for achieving smooth and effective braking.

[0039] Furthermore, one end of the slide rod 13 is fixedly connected to the inner bracket 5 , and the other end of the slide rod 13 is fixedly mounted with a magnet block 12 and can be adsorbed by the mounting frame 1 .

[0040] The adsorption effect of the magnet block 12 helps to quickly reset the inner pad 3 after emergency braking, reducing maintenance time and complexity. The adsorption effect of the magnet block 12 and the mounting frame 1 provides additional safety protection to ensure that the inner pad 3 will not accidentally detach during braking.

[0041] Furthermore, mounting grooves 9 are provided in the outer pad 2 and the inner pad 3, and the outer bracket 4 and the inner bracket 5 are fixedly connected to the outer pad 2 and the inner pad 3 respectively by positioning screws 7, and anti-slip teeth 10 are provided on the outer pad 2 and the inner pad 3.

[0042] The use of the mounting grooves 9 and the positioning screws 7 in the outer pad 2 and the inner pad 3 simplifies the installation process and makes the fixing of the components faster and more convenient. The design of the anti-slip teeth 10 increases the friction between the inner pad 3 and the guide rail, which not only improves the braking efficiency, but also improves the durability and reliability of the components. The fixing method of the positioning screws 7 makes the maintenance and inspection of the outer bracket 4 and the inner bracket 5 more convenient.

[0043] When the present invention is in use, when the elevator control system detects that the elevator speed exceeds the safety threshold or an emergency such as a suspension rope breakage occurs, the deceleration mechanism is activated, and the telescopic mechanism 8 installed at the bottom of the mounting frame 1 starts to move. One end of the telescopic mechanism 8 is fixedly connected to the bottom of the outer bracket 4, and the other end is rotatably connected to the top of the mounting frame 1. As the telescopic mechanism 8 extends, the bottom of the outer bracket 4 moves inward, thereby causing the inner pad 3 on the inner bracket 5 to move up along the outer pad 2 and gradually approach the elevator guide rail. At this time, the inner pad 3 fixedly installed on the two inner brackets 5 begins to clamp the guide rail. The sizes of the inner pad 3 and the outer pad 2 match to ensure stability during movement. One end of the sliding rod 13 is fixedly connected to the inner bracket 5, and the other end is fixedly installed with a magnet block 12. The magnet block 12 can be adsorbed by the mounting frame 1, which helps to keep the position of the inner pad 3 unchanged under normal circumstances. As the inner pad 3 clamps the guide rail, the friction increases and the elevator car starts to decelerate. The clamping force and friction force of the inner pad 3 work together to eventually stop the elevator car from moving. Once the emergency situation is resolved, the telescopic mechanism 8 can be retracted and the outer bracket 4 is reset. At the same time, the inner bracket 5 moves down along the slide rod 13 under the action of gravity. The adsorption effect of the magnet block 12 and the mounting frame 1 helps to reset the inner pad 3. The slide rod 13 slides in the slide groove 11, and eventually the inner bracket 5 returns to its initial position, preparing for the next deceleration operation.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A safety protection device for preventing an elevator car from accidentally overspeeding, comprising a mounting frame (1), wherein the number of the mounting frames (1) is two, and the front and rear ends of the bottoms of the two mounting frames (1) on opposite sides are fixedly connected by a pull rod (6), characterized in that: Also includes: An outer bracket (4) is movably mounted on opposite sides of the two mounting frames (1); There are two outer brackets (4), and an inner bracket (5) is movably mounted on opposite sides of the two outer brackets (4). An outer pad (2) is fixedly mounted on each of the two outer brackets (4). There are two inner brackets (5), and inner pads (3) are fixedly mounted on both inner brackets (5); The inner pad (3) and the outer pad (2) have matching sizes.

2. A safety protection device for preventing accidental overspeeding of an elevator car according to claim 1, characterized in that: A telescopic mechanism (8) is fixedly mounted in the middle of the bottom of each of the two mounting frames (1) on opposite sides, and the tops of the two mounting frames (1) are rotatably connected to the top of the outer bracket (4).

3. A safety protection device for preventing an elevator car from accidentally overspeeding according to claim 2, characterized in that: One end of the telescopic mechanism (8) facing away from the mounting frame (1) is fixedly connected to the bottom of the outer bracket (4).

4. A safety protection device for preventing accidental overspeeding of an elevator car according to claim 1, characterized in that: The outer bracket (4) is provided with a slide groove (11), and a slide rod (13) is slidably installed in the slide groove (11).

5. A safety protection device for preventing an elevator car from accidentally overspeeding according to claim 4, characterized in that: One end of the slide rod (13) is fixedly connected to the inner bracket (5), and the other end of the slide rod (13) is fixedly mounted with a magnet block (12) and can be adsorbed by the mounting frame (1).

6. A safety protection device for preventing an elevator car from accidentally overspeeding according to claim 1, characterized in that: The outer pad (2) and the inner pad (3) are both provided with mounting grooves (9), the outer bracket (4) and the inner bracket (5) are respectively fixedly connected to the outer pad (2) and the inner pad (3) by positioning screws (7), and the outer pad (2) and the inner pad (3) are both provided with anti-slip teeth (10).

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