Elevator anti-falling emergency braking equipment

Abstract

The utility model relates to the technical field of elevator safety equipment, in particular to elevator anti-falling emergency braking equipment which comprises a traction wheel located on one side of the equipment, a steel wire rope is arranged on the outer side of the traction wheel in a sleeved mode, a guide wheel is connected to the lower portion of the steel wire rope, and a braking gear is connected to the rear side of the traction wheel. A connecting base is arranged above the traction wheel, a limiting structure is arranged on the connecting base and located on one side of the traction wheel, a control device is further arranged on the top of the connecting base, an auxiliary braking structure matched with the braking gear is further arranged on the rear side of the control device, and a main braking structure is further arranged on the side face of the control device. The main braking structure and the auxiliary braking structure are arranged, so that multiple protection of the elevator is achieved, and the braking reliability is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety equipment technology, specifically to an elevator anti-fall emergency braking device. Background Technology

[0002] As an indispensable vertical transportation tool in modern buildings, the safety of elevators is of paramount importance. However, existing elevators have some shortcomings in terms of fall prevention:

[0003] 1. Limited braking methods: Traditional elevators often rely on a single braking method, such as a conventional safety brake system. If this system malfunctions, such as due to wear and tear of mechanical parts or failure of the trigger mechanism, the elevator will be unable to be effectively braked during a fall, leading to serious safety hazards.

[0004] 2. Delayed braking response: Existing braking devices have a significant time delay between detecting an abnormal elevator fall and actually implementing braking action. For example, some devices rely on simple speed sensors to trigger braking. When an elevator suddenly falls rapidly, the sensor may not be able to detect the speed change in time, resulting in delayed braking. During this time, the elevator may fall a long distance, greatly increasing the risk of passenger injury or death.

[0005] 3. Inadequate structural design: Some fall arrest devices involve excessive modifications to the original elevator structure. Given the limited space in the elevator shaft, complex structures not only make installation difficult but may also interfere with the normal operation of other elevator components, increasing maintenance costs and complexity. Furthermore, an unreasonable structural layout may lead to insufficient stability of the equipment itself, preventing it from reliably performing its braking function in critical moments.

[0006] 4. Lack of multiple protection mechanisms: Once the main braking system fails, the elevator often lacks a backup effective braking measure. For example, when the brake pads are severely worn and lose braking force, or when the braking drive device malfunctions, the elevator completely loses its braking ability, failing to guarantee passenger safety.

[0007] Therefore, it is necessary to design an elevator anti-fall emergency braking device to solve the problems mentioned above. Utility Model Content

[0008] The purpose of this invention is to provide an elevator anti-fall emergency braking device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An elevator fall prevention emergency braking device includes a traction sheave located on one side of the device, a steel wire rope sleeved on the outer side of the traction sheave, a guide wheel connected below the steel wire rope, a brake gear connected to the rear side of the traction sheave, a connecting seat above the traction sheave, a limit structure on one side of the connecting seat located on one side of the traction sheave, a control device on the top of the connecting seat, an auxiliary braking structure cooperating with the brake gear on the rear side of the control device, and a main braking structure on the side of the control device.

[0011] As a preferred embodiment of this utility model, the main braking structure includes a first hydraulic telescopic rod fixedly connected to one side of the control device, a side arm fixedly connected to the side of the first hydraulic telescopic rod away from the control device, a second hydraulic telescopic rod fixedly connected to the side of the side arm located below the traction sheave, and a brake band fixedly connected to the side of the second hydraulic telescopic rod away from the side arm.

[0012] As a preferred embodiment of this utility model, the overall shape of the brake band matches the outer shape of the corresponding traction wheel, so that the inner wall of the brake band can be tightly attached to the outer wall of the traction wheel.

[0013] As a preferred embodiment of this utility model, the control ends of the first hydraulic telescopic rod and the second hydraulic telescopic rod are electrically connected to the input end of the control device.

[0014] As a preferred embodiment of this utility model, the auxiliary braking structure includes an extension frame integrally fixedly connected to the outer shell of the rear side of the control device. A third hydraulic telescopic rod is also fixedly connected to one side of the extension frame. A transverse frame is also fixedly connected to the bottom of the third hydraulic telescopic rod. A connecting column is fixedly connected to the bottom of the transverse frame. A brake pawl is also connected inside the connecting column.

[0015] As a preferred embodiment of this utility model, the brake pawl is connected to the connecting column via a connecting shaft and is locked in place by an adjusting nut.

[0016] As a preferred embodiment of this utility model, the limiting structure includes a connecting plate fixedly connected to the front side of the connecting seat by a fixing nut, and a limiting pressure cylinder is also fixedly connected to the front side of the connecting plate, with the limiting pressure cylinder positioned at a certain height above the traction wheel.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model, through the provision of an elevator fall prevention emergency braking device, achieves the following effects: 1. Multiple braking protection: The main braking structure, through a first hydraulic telescopic rod, a side arm, a second hydraulic telescopic rod, and a brake band, can, under the control of the control device, ensure that the brake band tightly adheres to the outer wall of the traction sheave to achieve braking, providing the main braking force when the elevator falls; the auxiliary braking structure, consisting of an extension frame, a third hydraulic telescopic rod, a transverse frame, a connecting column, and brake pawls, forms an independent braking system. When the elevator falls, the control device controls the third hydraulic telescopic rod to extend, causing the brake pawls to engage the brake gears, further enhancing the braking effect, achieving multiple protections, and greatly improving braking reliability; 2. Rapid response braking: The control device is electrically connected to the first, second, and third hydraulic telescopic rods. When the elevator shows signs of falling, the control device can quickly receive relevant sensor signals and immediately control the movement of each hydraulic telescopic rod, rapidly activating the main braking structure and auxiliary braking structure, greatly shortening the braking response time, effectively reducing the elevator's falling distance, and ensuring passenger safety; 3. Compact and reasonable structure: The layout of each component of the equipment is compact. For example, the limit structure, through connecting plates, fixing nuts, and limiting cylinders, forms a simple and effective limit system to limit abnormal displacement of the traction sheave, and the structure is simple and does not occupy too much space. At the same time, the modular design of the main braking structure and auxiliary braking structure facilitates installation and maintenance, requires minimal modification to the original elevator structure, and does not affect the normal operation and stability of the elevator; 4. Strong adaptability: The shape of the brake band matches the outer shape of the traction sheave, allowing for a tight fit and ensuring effective braking under different working conditions. The brake pawls are connected to the connecting column through connecting shafts and adjusting nuts, and the fit between the brake pawls and brake gears can be adjusted according to actual needs to adapt to different elevator operating parameters and braking requirements, improving the equipment's versatility and applicability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of a portion of the present invention from another perspective;

[0021] Figure 3 This is a three-dimensional structural diagram of the auxiliary braking structure of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the limiting structure of this utility model.

[0023] In the diagram: 1. Traction sheave; 2. Wire rope; 3. Guide wheel; 4. Brake gear; 5. Connecting seat; 6. Limiting structure; 7. Control device; 8. Auxiliary braking structure; 9. Main braking structure; 91. First hydraulic telescopic rod; 92. Side arm; 93. Second hydraulic telescopic rod; 94. Brake band; 81. Extension frame; 82. Third hydraulic telescopic rod; 83. Transverse frame; 84. Connecting column; 85. Brake pawl; 86. Connecting shaft; 87. Adjusting nut; 61. Connecting plate; 62. Fixing nut; 63. Limiting cylinder. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] For examples, please refer to Figure 1-4 This utility model provides a technical solution:

[0029] An elevator fall prevention emergency braking device includes a traction sheave 1 located on one side of the device. A steel wire rope 2 is fitted around the outside of the traction sheave 1, and a guide wheel 3 is connected below the steel wire rope 2. A brake gear 4 is connected to the rear side of the traction sheave 1. A connecting seat 5 is provided above the traction sheave 1. A limit structure 6 is provided on one side of the connecting seat 5, and a control device 7 is also provided on the top of the connecting seat 5. An auxiliary braking structure 8 that cooperates with the brake gear 4 is also provided on the rear side of the control device 7, and a main braking structure 9 is also provided on the side of the control device 7. The traction sheave 1 is installed on one side of the device, and the steel wire rope 2 is fitted around the outside of the traction sheave 1. The guide wheel 3 is connected below the steel wire rope 2. The guide wheel 3 changes the direction of the steel wire rope 2 to achieve smooth lifting and lowering of the elevator car. The brake gear 4 is connected to the rear side of the traction sheave 1 to prepare for subsequent auxiliary braking. The connecting seat 5 is installed above the traction sheave 1 as the mounting base for other components.

[0030] Specifically, the main braking structure 9 includes a first hydraulic telescopic rod 91 fixedly connected to one side of the control device 7. A side arm 92 is also fixedly connected to the side of the first hydraulic telescopic rod 91 away from the control device 7. A second hydraulic telescopic rod 93 is also fixedly connected to the side of the traction sheave 1 below the side arm 92. A brake band 94 is also fixedly connected to the side of the second hydraulic telescopic rod 93 away from the side arm 92. The overall shape of the brake band 94 matches the outer shape of the corresponding side of the traction sheave 1, so that the inner wall of the brake band 94 can fit tightly against the outer wall of the traction sheave 1. The control ends of the first hydraulic telescopic rod 91 and the second hydraulic telescopic rod 93 are electrically connected to the input end of the control device 7. When the control device 7 detects that the elevator is in danger of falling, it sends a signal to the first hydraulic telescopic rod 91 and the second hydraulic telescopic rod 93. The first hydraulic telescopic rod 91 extends, pushing the side arm 92 to move towards the traction sheave 1. At the same time, the second hydraulic telescopic rod 93 extends, causing the brake band 94 to adhere to the outer wall of the traction sheave 1. The friction between the brake band 94 and the traction sheave 1 is used to decelerate the traction sheave 1, thereby achieving elevator braking. As the main braking method, it can respond quickly in emergency situations. By controlling the brake band to adhere to the traction sheave through the hydraulic telescopic rod, a strong frictional force is generated to quickly decelerate the elevator, effectively preventing the elevator from falling and ensuring passenger safety.

[0031] Specifically, the auxiliary braking structure 8 includes an extension frame 81 integrally fixedly connected to the outer shell of the rear side of the control device 7. A third hydraulic telescopic rod 82 is also fixedly connected to one side of the extension frame 81. A transverse frame 83 is also fixedly connected to the bottom of the third hydraulic telescopic rod 82. A connecting column 84 is fixedly connected to the bottom of the transverse frame 83. A brake pawl 85 is also connected inside the connecting column 84. After the control device 7 detects the danger of the elevator falling, it sends a signal to the third hydraulic telescopic rod 82. The third hydraulic telescopic rod 82 extends, causing the transverse frame 83 and the connecting column 84 to descend, so that the brake pawl 85 approaches the brake gear 4. The brake pawl 85 is connected to the connecting column 84 via the connecting shaft 86 and the adjusting nut 87. The angle of the brake pawl 85 can be adjusted to engage with the brake gear 4, further preventing the traction sheave 1 from rotating and achieving auxiliary braking. This allows it to cooperate with the main braking structure, providing additional braking force on the basis of the main braking structure, enhancing the braking effect. Even if the main braking structure experiences partial failure, the auxiliary braking structure can still function, providing multiple guarantees for elevator safety braking and improving equipment reliability.

[0032] The brake pawl 85 is connected to the connecting column 84 via the connecting shaft 86 and is locked in place by the adjusting nut 87; the angle of the brake pawl 85 can be adjusted by loosening the adjusting nut 87.

[0033] Specifically, the limiting structure 6 includes a connecting plate 61 fixedly connected to the front side of the connecting seat 5 by a fixing nut 62. A limiting cylinder 63 is also fixedly connected to the front side of the connecting plate 61, and the limiting cylinder 63 is positioned at a certain height above the traction sheave 1. The connecting plate 61 is fixed to the front side of the connecting seat 5 by the fixing nut 62, and the limiting cylinder 63 is fixed to the front side of the connecting plate 61, so that the limiting cylinder 63 is positioned at a certain height above the traction sheave 1. During elevator operation, the limiting cylinder 63 limits the traction sheave 1, preventing abnormal displacement of the traction sheave 1 during operation; effectively limiting the range of motion of the traction sheave 1, enhancing the operational stability of the traction sheave 1, avoiding elevator malfunctions caused by displacement of the traction sheave 1, ensuring normal elevator operation, and providing a guarantee for the stable operation of the traction sheave 1 in conjunction with the braking structure during emergency braking.

[0034] The working process of this utility model is as follows: When using the elevator anti-fall emergency braking device, during normal operation, the traction sheave 1 rotates under the drive of the motor, driving the steel wire rope 2 sleeved on its outer side to move. The guide wheel 3 connected below the steel wire rope 2 guides the direction of the steel wire rope 2, ensuring the smooth lifting and lowering of the elevator car. During this process, the limiting cylinder 63 in the limiting structure 6 is fixed to the connecting plate 61 by the fixing nut 62. The connecting plate 61 is fixed to the front side of the connecting seat 5. The limiting cylinder 63 is placed at a certain height above the traction sheave 1, limiting the abnormal displacement of the traction sheave 1 and ensuring operational stability. When the emergency braking is triggered, when the elevator shows signs of abnormal fall, the control device 7 receives signals from various elevator sensors such as speed sensors and acceleration sensors, determines that the elevator is in a dangerous state, and then initiates the braking process. The control device 7 sends commands to the first hydraulic telescopic rod 91 and the second hydraulic telescopic rod 93 in the main braking structure 9. The first hydraulic telescopic rod 91 extends, pushing the side arm 92 fixed at the end away from the control device 7 to move towards the traction sheave 1. The second hydraulic telescopic rod 93, connected below the side arm 92, extends synchronously, causing the brake band 94 to adhere to the outer wall of the traction sheave 1. Because the overall shape of the brake band 94 matches the outer shape of the traction sheave 1, they fit tightly, utilizing the friction between them to decelerate the traction sheave 1. Simultaneously with the activation of the main braking structure, the control device 7 sends a signal to the third hydraulic telescopic rod 82 of the auxiliary braking structure 8. The third hydraulic telescopic rod 82 is fixed to the extension frame 81, which is integrally fixed to the rear outer housing of the control device 7. The extension of the third hydraulic telescopic rod 82 causes the transverse frame 83 and connecting column 84 connected at the bottom to descend. Inside the connecting column 84, the brake pawl 85, connected via the connecting shaft 86 and adjusting nut 87, approaches and engages with the brake gear 4, further preventing the traction sheave 1 from rotating, thus enhancing the braking effect of the auxiliary main braking structure and ensuring safe braking of the elevator.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator fall prevention emergency braking device, comprising a traction sheave (1) located on one side of the device, characterized in that: A steel wire rope (2) is sleeved on the outside of the traction sheave (1). A guide wheel (3) is connected below the steel wire rope (2). A brake gear (4) is connected to the rear side of the traction sheave (1). A connecting seat (5) is provided above the traction sheave (1). A limit structure (6) is provided on one side of the traction sheave (1) on the connecting seat (5). A control device (7) is also provided on the top of the connecting seat (5). An auxiliary braking structure (8) that cooperates with the brake gear (4) is also provided on the rear side of the control device (7). A main braking structure (9) is also provided on the side of the control device (7).

2. The elevator fall prevention emergency braking device according to claim 1, characterized in that: The main braking structure (9) includes a first hydraulic telescopic rod (91) fixedly connected to one side of the control device (7). A side arm (92) is also fixedly connected to the side of the first hydraulic telescopic rod (91) away from the control device (7). A second hydraulic telescopic rod (93) is also fixedly connected to the side of the side arm (92) located below the traction wheel (1). A brake band (94) is also fixedly connected to the side of the second hydraulic telescopic rod (93) away from the side arm (92).

3. The elevator anti-fall emergency braking device according to claim 2, characterized in that: The overall shape of the brake band (94) matches the outer shape of the corresponding traction wheel (1), so that the inner wall of the brake band (94) can fit tightly against the outer wall of the traction wheel (1).

4. The elevator anti-fall emergency braking device according to claim 2, characterized in that: The control ends of the first hydraulic telescopic rod (91) and the second hydraulic telescopic rod (93) are electrically connected to the input end of the control device (7).

5. An elevator fall prevention emergency braking device according to claim 1, characterized in that: The auxiliary braking structure (8) includes an extension frame (81) integrally fixedly connected to the outer shell of the rear side of the control device (7). A third hydraulic telescopic rod (82) is also fixedly connected to one side of the extension frame (81). A transverse frame (83) is also fixedly connected to the bottom of the third hydraulic telescopic rod (82). A connecting column (84) is fixedly connected to the bottom of the transverse frame (83). A brake pawl (85) is also connected inside the connecting column (84).

6. An elevator fall prevention emergency braking device according to claim 5, characterized in that: The brake pawl (85) is connected to the connecting column (84) via the connecting shaft (86) and is locked in place by the adjusting nut (87).

7. An elevator fall prevention emergency braking device according to claim 1, characterized in that: The limiting structure (6) includes a connecting plate (61) fixedly connected to the front side of the connecting seat (5) by a fixing nut (62). A limiting pressure cylinder (63) is also fixedly connected to the front side of the connecting plate (61). The limiting pressure cylinder (63) is placed at a certain height above the traction wheel (1).

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