A multi-emergency braking structure for elevators

Abstract

This utility model provides a multi-emergency braking structure for elevators, belonging to the field of elevator technology. It includes a brake and a brake wheel installed within the brake. A brake arm is mounted on the side of the brake, and a brake seat is rotatably connected to the brake arm. It also includes a multi-braking mechanism, which includes an arc-shaped plate disposed on the side of the brake seat. A main brake pad is fixed to the side of the arc-shaped plate facing the brake wheel. A connecting assembly is disposed on the side of the arc-shaped plate, including a side plate fixed to the side of the arc-shaped plate. By using the side plate, when replacing the main brake pad, simply unscrew the nut from the screw to pull the main brake pad out from between the brake seat and the brake wheel. Then, insert the new main brake pad between the brake seat and the brake wheel, and finally fix the side plate with the nut. The operation is simple, and there is no need to disassemble the brake arm when replacing the main brake pad, making the replacement of the main brake pad simpler and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a multi-emergency braking structure for elevators. Background Technology

[0002] The elevator brake is the core safety device of the elevator. It is installed on the elevator traction machine. When the power is on, the electromagnet of the brake is attracted and the brake shoes are released, allowing the elevator to run normally. When the power is off, the spring force drives the brake arm to rotate. The brake arm drives the brake shoes to clamp the brake wheel, thereby generating friction to stop the elevator quickly and keep it stationary. This prevents the elevator from slipping, overspeeding or going out of control, and ensures the safety of the elevator operation and personnel and goods.

[0003] The brake shoes of the brake are rotatably connected to the brake arm via a rotating shaft. When replacing the brake shoes, the connection between the brake arm and the electromagnet and spring must be disconnected first. Then, the brake arm must be opened, and the retaining ring must be removed from the end of the rotating shaft. The rotating shaft must then be pulled out from the connection between the brake arm and the brake shoes. After removing the brake shoes, the new brake shoes are placed on the brake arm and connected through the rotating shaft. Then, the brake arm is connected to the electromagnet and spring to replace the brake shoes. However, the brake arm must be disassembled before replacing the brake shoes, and the convenience of replacing the brake shoes needs to be improved. Therefore, this application provides a multi-emergency braking structure for elevators to meet the requirements. Utility Model Content

[0004] This utility model provides a multi-emergency braking structure for elevators to solve the problem that the brake arm must be disassembled before replacing the brake shoes, and the convenience of replacing the brake shoes needs to be improved.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A multi-emergency braking structure for an elevator includes a brake and a brake wheel installed inside the brake. A brake arm is mounted on the side of the brake, and a brake seat is rotatably connected to the brake arm. The structure also includes: A multi-braking mechanism includes an arc-shaped plate disposed on the side of the brake seat, a main brake pad fixed on the side of the arc-shaped plate facing the brake wheel, a connecting assembly disposed on the side of the arc-shaped plate, the connecting assembly including a side plate fixed on the side of the arc-shaped plate, a screw fixed on the side of the brake seat, the side plate being movably sleeved on the screw, a nut being threadedly connected to the screw, and the nut pressing on the side plate. During disassembly, unscrew the nut from the screw and pull the arc plate out from between the brake seat and the brake wheel. During installation, insert the arc plate between the brake seat and the brake wheel and then secure it with the nut.

[0006] Preferably, a positioning block is fixed to the side of the brake seat, and a positioning hole is opened on the side of the side plate, into which the positioning block is inserted.

[0007] Preferably, the positioning block is frustum-shaped, and the shape of the positioning hole is adapted to the shape of the positioning block.

[0008] Preferably, the arc-shaped plate has several square grooves on the side away from the brake wheel, and the brake seat has several square strips fixed on the side near the brake wheel, with the square strips fitting against the inner wall of the square grooves.

[0009] Preferably, the top and bottom of the square strip are provided with inclined surfaces, and the inner wall of the square groove is in contact with the inclined surfaces.

[0010] Preferably, the multiple braking mechanism further includes an auxiliary braking assembly, which includes an arc-shaped strip fixed to the side of the side plate, an auxiliary braking ring fixed to the side of the brake wheel, and an auxiliary braking pad fixed to the side of the arc-shaped strip near the auxiliary braking ring. When the elevator is in emergency braking mode, the brake drives the brake arm to rotate so that the main braking pad is in contact with the brake wheel and the auxiliary braking pad is in contact with the auxiliary braking ring.

[0011] Preferably, both the main brake pad and the auxiliary brake pad have chip storage grooves on their sides, and the chip storage grooves are inclined.

[0012] Preferably, the outer wall of the auxiliary brake ring is inclined, and the shape of the auxiliary brake pad is adapted to the shape of the outer wall of the auxiliary brake ring.

[0013] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, by setting a side plate, when replacing the main brake pad, the main brake pad can be pulled out from between the brake seat and the brake wheel by unscrewing the nut from the screw. Then, the new main brake pad is inserted between the brake seat and the brake wheel, and the side plate is fixed in place with the nut. The operation is simple, and there is no need to disassemble the brake arm when replacing the main brake pad, thus making the replacement of the main brake pad simpler and more convenient.

[0014] By setting a positioning block, the side plate is fitted onto the screw rod, and the nut is tightened on the screw rod and pressed onto the side plate to fix the main brake pad. After the side plate is fixed, the frustum-shaped positioning block is inserted into the positioning hole of the side plate to further improve the connection stability between the side plate and the brake seat, thereby improving the fixing strength of the side plate.

[0015] By setting up arc-shaped bars and auxiliary brake pads, during braking, the brake arm drives the main brake pad to fit tightly against the brake wheel through the brake seat, and the brake seat drives the auxiliary brake pad to fit tightly against the auxiliary brake ring through the arc-shaped bars, thereby achieving dual braking and effectively ensuring stable and reliable braking of the elevator.

[0016] By setting up a chip storage groove, the main brake pads and auxiliary brake pads will wear during braking. The chip storage groove stores the chips, effectively reducing the adhesion of chips to the brake wheel and auxiliary brake ring. At the same time, the chip storage groove is inclined, and the chips can be discharged downward under the guidance of the inclined chip storage groove, reducing the accumulation of chips in the chip storage groove. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the brake seat of this utility model; Figure 3 This is a three-dimensional structural diagram of the chip storage groove of this utility model; Figure 4 This is a three-dimensional structural diagram of the square strip of this utility model; Figure 5 This is a three-dimensional structural diagram of the arc-shaped plate of this utility model; Figure 6 This is a three-dimensional structural diagram of the square groove of this utility model.

[0018] In the diagram: 1. Brake; 2. Brake wheel; 3. Brake seat; 4. Multiple braking mechanism; 5. Connecting assembly; 6. Side plate; 7. Positioning block; 8. Main brake pad; 9. Arc plate; 10. Square bar; 11. Square groove; 12. Auxiliary braking assembly; 13. Auxiliary brake pad; 14. Auxiliary brake ring; 15. Arc bar; 16. Chip storage groove.

[0019] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0020] The following is a detailed description of a multi-emergency braking structure for an elevator provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0021] like Figures 1-6 As shown, an embodiment of this utility model provides a multi-emergency braking structure for an elevator, including a brake 1 and a brake wheel 2 installed inside the brake 1. A brake arm is installed on the side of the brake 1, the bottom of the brake arm is rotatably connected to the brake 1, a spring is installed on the top of the brake arm, and a brake seat 3 is rotatably connected to the brake arm. During braking, the electromagnet on the brake 1 is de-energized, and the brake arm, under the action of the spring force, drives the brake seat 3 to move closer to the brake wheel 2. After the electromagnet is energized, the brake arm drives the brake seat 3 to rotate away from the brake wheel 2. The structure also includes: The multi-braking mechanism 4 includes an arc-shaped plate 9 disposed on the side of the brake seat 3. A main brake pad 8 is fixed on the side of the arc-shaped plate 9 facing the brake wheel 2. A connecting component 5 is disposed on the side of the arc-shaped plate 9. The connecting component 5 includes a side plate 6 fixed on the side of the arc-shaped plate 9. A screw is fixed on the side of the brake seat 3. The side plate 6 is movably sleeved on the screw. A nut is threaded on the screw and presses against the side plate 6. During disassembly, unscrew the nut from the screw and pull the arc plate 9 out from between the brake seat 3 and the brake wheel 2. During installation, insert the arc plate 9 between the brake seat 3 and the brake wheel 2 and then fix it with the nut. The arc plate 9 provides an installation carrier for the main brake pad 8, ensuring that the main brake pad 8 and the brake wheel 2 fit precisely. The side plate 6, through the screw and nut, enables the arc plate 9 to be quickly fixed and disassembled from the brake seat 3. When replacing the main brake pad 8, there is no need to disassemble the brake arm, simplifying the operation process, shortening maintenance time, and ensuring the stability of the main brake pad 8 after installation, ensuring reliable braking effect. At the same time, in the event of a sudden power outage in the elevator, the spring force can also cause the brake arm to rotate the main brake pad 8, thereby achieving emergency braking of the brake wheel 2.

[0022] like Figure 2 and Figure 5 As shown in this embodiment, a positioning block 7 is fixed on the side of the brake seat 3, and a positioning hole is opened on the side of the side plate 6. The positioning block 7 is inserted into the positioning hole, and the positioning block 7 cooperates with the positioning hole to accurately position the relative position of the side plate 6 and the brake seat 3, prevent the side plate 6 from shifting during installation, ensure that the main brake pad 8 and the brake wheel 2 fit accurately, and enhance the connection stability between the side plate 6 and the brake seat 3.

[0023] like Figure 5 As shown in this embodiment, the positioning block 7 is frustum-shaped, and the shape of the positioning hole is adapted to the shape of the positioning block 7. The frustum-shaped positioning block 7 and the adapted positioning hole facilitate the quick insertion of the positioning block 7 into the positioning hole, which plays a guiding role and simplifies the installation steps. At the same time, the frustum structure makes the positioning block 7 fit more tightly with the positioning hole, further improving the fixing strength of the side plate 6 and preventing the side plate 6 from loosening during braking.

[0024] like Figure 5 and Figure 6 As shown in this embodiment, the side of the arc plate 9 away from the brake wheel 2 has several square grooves 11, and the side of the brake seat 3 near the brake wheel 2 has several square strips 10 fixed thereon. The square strips 10 fit against the inner wall of the square grooves 11. The square strips 10 and the square grooves 11 cooperate to restrict the relative rotation between the arc plate 9 and the brake seat 3, ensuring that the main brake pad 8 is always in close contact with the brake wheel 2 during braking, avoiding relative sliding that affects the braking effect, and at the same time enhancing the installation stability of the arc plate 9 and preventing the arc plate 9 from shifting during braking.

[0025] like Figure 4 and Figure 6 As shown in this embodiment, the top and bottom of the square strip 10 are both provided with inclined surfaces, and the inner wall of the square groove 11 fits against the inclined surfaces. The inclined surfaces of the square strip 10 fit against the inner wall of the square groove 11, which serves as a guide, making it easier for the arc plate 9 to be quickly inserted between the brake seat 3 and the brake wheel 2, simplifying the installation operation. At the same time, the inclined surface fit can improve the tightness of the connection between the square strip 10 and the inner wall of the square groove 11, further improving the fixing stability of the arc plate 9.

[0026] like Figures 1-3 As shown in this embodiment, the multi-braking mechanism 4 also includes an auxiliary braking assembly 12. The auxiliary braking assembly 12 includes an arc-shaped strip 15 fixed to the side of the side plate 6. An auxiliary braking ring 14 is fixed to the side of the brake wheel 2. An auxiliary braking pad 13 is fixed to the side of the arc-shaped strip 15 near the auxiliary braking ring 14. When the elevator is in emergency braking mode, the brake 1 drives the brake arm to rotate so that the main brake pad 8 is in contact with the brake wheel 2 and the auxiliary brake pad 13 is in contact with the auxiliary braking ring 14. During braking, the main brake pad 8 is in double contact with the brake wheel 2 and the auxiliary brake pad 13 is in double contact with the auxiliary braking ring 14, forming double braking, which greatly improves the reliability and stability of braking and avoids safety accidents caused by single braking failure. The arc-shaped strip 15 provides installation support for the auxiliary brake pad 13 to ensure that the auxiliary brake pad 13 and the auxiliary braking ring 14 are accurately in contact.

[0027] like Figure 3 As shown in this embodiment, the main brake pad 8 and the auxiliary brake pad 13 are both provided with chip storage grooves 16 on their sides. The chip storage grooves 16 are inclined and can store wear debris generated during braking, reducing the adhesion of debris to the surfaces of the brake wheel 2 and the auxiliary brake ring 14. The inclined structure can guide the debris to be discharged downwards, avoiding the accumulation of debris from affecting the braking performance and maintaining stable braking effect.

[0028] like Figure 1 As shown in this embodiment, the outer wall of the auxiliary brake ring 14 is inclined, and the shape of the auxiliary brake pad 13 is adapted to the shape of the outer wall of the auxiliary brake ring 14. The adapted inclined structure makes the auxiliary brake pad 13 fit more tightly with the auxiliary brake ring 14, increases the contact area, and improves the auxiliary braking effect.

[0029] Working principle: When braking, the electromagnet of brake 1 is de-energized, and the brake arm rotates under the action of the spring force, thereby driving the brake seat 3 to move towards the brake wheel 2. The brake seat 3 drives the main brake pad 8 on the arc plate 9 to fit tightly with the brake wheel 2. At the same time, the brake seat 3 drives the auxiliary brake pad 13 to fit tightly with the auxiliary brake ring 14 through the side plate 6 and the arc strip 15, thereby achieving double braking and ensuring stable and reliable elevator braking. During braking, the main brake pad 8 and the auxiliary brake pad 13 will generate wear debris. The debris can enter the inclined debris storage groove 16 opened on the side of the main brake pad 8 and the auxiliary brake pad 13. The debris storage groove 16 can not only store the debris and reduce the adhesion of the debris to the surface of the brake wheel 2 and the auxiliary brake ring 14, but also guide the debris downward through the inclined structure to avoid the debris from accumulating in the debris storage groove 16. This ensures the fit between the main brake pad 8 and the brake wheel 2, and between the auxiliary brake pad 13 and the auxiliary brake ring 14, and maintains stable braking performance. When it is necessary to replace the main brake pad 8 and the auxiliary brake pad 13, unscrew the nut on the screw on the side of the brake seat 3 to release the fixation of the side plate 6. Then, pull the arc plate 9 together with the main brake pad 8 out from between the brake seat 3 and the brake wheel 2 to complete the disassembly of the main brake pad 8 and the auxiliary brake pad 13. During installation, insert the arc plate 9 with the new main brake pad 8 between the brake seat 3 and the brake wheel 2, so that the square strip 10 of the brake seat 3 is embedded in the square groove 11 of the arc plate 9. At the same time, let the frustum-shaped positioning block 7 on the side of the brake seat 3 be inserted into the positioning hole of the side plate 6. Then screw the nut back onto the screw and press the side plate 6 to fix the main brake pad 8 and the auxiliary brake pad 13, thereby completing the replacement of the main brake pad 8 and the auxiliary brake pad 13. The positioning block 7 can improve the connection stability between the side plate 6 and the brake seat 3 and enhance the fixing strength of the side plate 6, thereby ensuring the stable installation of the main brake pad 8 and the auxiliary brake pad 13. The entire replacement process is simple and convenient to operate.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-emergency braking structure for an elevator, comprising a brake (1) and a brake wheel (2) installed within the brake (1), wherein a brake arm is mounted on the side of the brake (1), and a brake seat (3) is rotatably connected to the brake arm, characterized in that, Also includes: The multi-braking mechanism (4) includes an arc plate (9) disposed on the side of the brake seat (3), a main brake pad (8) is fixed on the side of the arc plate (9) facing the brake wheel (2), a connecting assembly (5) is disposed on the side of the arc plate (9), the connecting assembly (5) includes a side plate (6) fixed on the side of the arc plate (9), a screw is fixed on the side of the brake seat (3), the side plate (6) is movably sleeved on the screw, a nut is threaded on the screw, and the nut is pressed on the side plate (6); When disassembling, unscrew the nut from the screw and pull the arc plate (9) out from between the brake seat (3) and the brake wheel (2). When installing, insert the arc plate (9) between the brake seat (3) and the brake wheel (2) and then fix it with the nut.

2. The elevator multi-emergency braking structure according to claim 1, characterized in that, The brake seat (3) has a positioning block (7) fixed on its side, and the side plate (6) has a positioning hole, into which the positioning block (7) is inserted.

3. The elevator multi-emergency braking structure according to claim 2, characterized in that, The positioning block (7) is frustum shaped, and the shape of the positioning hole is adapted to the shape of the positioning block (7).

4. The elevator multi-emergency braking structure according to claim 1, characterized in that, The arc plate (9) has several square grooves (11) on the side away from the brake wheel (2), and the brake seat (3) has several square strips (10) fixed on the side close to the brake wheel (2). The square strips (10) are in contact with the inner wall of the square grooves (11).

5. The elevator multi-emergency braking structure according to claim 4, characterized in that, The top and bottom of the square strip (10) are both provided with inclined surfaces, and the inner wall of the square groove (11) is in contact with the inclined surfaces.

6. The elevator multi-emergency braking structure according to claim 1, characterized in that, The multi-braking mechanism (4) also includes an auxiliary braking assembly (12). The auxiliary braking assembly (12) includes an arc-shaped strip (15) fixed to the side of the side plate (6). An auxiliary braking ring (14) is fixed to the side of the brake wheel (2). An auxiliary braking pad (13) is fixed to the side of the arc-shaped strip (15) near the auxiliary braking ring (14). When the elevator is in emergency braking mode, the brake (1) drives the brake arm to rotate so that the main brake pad (8) is in contact with the brake wheel (2) and the auxiliary brake pad (13) is in contact with the auxiliary braking ring (14).

7. The elevator multi-emergency braking structure according to claim 6, characterized in that, Both the main brake pad (8) and the auxiliary brake pad (13) have chip storage grooves (16) on their sides, and the chip storage grooves (16) are inclined.

8. The elevator multi-emergency braking structure according to claim 6, characterized in that, The outer wall of the auxiliary brake ring (14) is inclined, and the shape of the auxiliary brake pad (13) is adapted to the shape of the outer wall of the auxiliary brake ring (14).

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