Elevator braking performance detection device

Abstract

The utility model discloses an elevator braking performance detection device which comprises a back plate, a right-angle support is fixed on the outer wall of one side of the back plate, a first air cylinder is installed on the inner wall of one side of the right-angle support, a vertical plate is installed at the top end of a piston rod of the first air cylinder, and a braking guide plate is fixed on the outer wall of one side of the vertical plate. Two inverted-U-shaped tables used for supporting an elevator car are installed on the surface of the brake guide plate in a sliding mode. The outer walls of the two sides of the vertical plate are each provided with an acceleration detection unit. The elevator braking device can actively intervene in the braking process of an elevator after elevator braking performance detection is completed, a braking mechanism can be triggered in time to increase braking force, it is ensured that the elevator can be safely stopped, and then elevator damage and potential safety hazards caused by insufficient braking are effectively avoided; even if other safety systems and brake systems in the elevator break down or fail, the active brake mechanism in the device can still play a standby protection role, and it is ensured that the elevator can be stopped in time under the emergency situation.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator performance detection, in particular to an elevator braking performance detection device. Background Art

[0002] When the elevator brakes, the mechanical force causes the brake pad to rub against the brake wheel to generate a braking torque; when the elevator is running, the electromagnetic force causes the brake to release, that is, the brake is engaged when power is lost and released when power is on. The function of the elevator braking performance detection device is to evaluate the braking performance of the elevator to ensure that it can stop safely in an emergency. The structure of the device includes sensors, data acquisition systems, and analysis software. The sensor measures the acceleration and speed of the elevator. The data acquisition system collects sensor data and transmits it to the analysis software. By analyzing the acceleration and speed data, it is evaluated whether the braking performance of the elevator meets the safety standards. Of course, the braking performance cannot be directly judged by acceleration alone. Multiple factors, such as speed and braking distance, need to be considered comprehensively. In short, the device provides an important basis for evaluating the braking performance of the elevator by measuring and analyzing the elevator operation data. The existing device usually only evaluates the braking performance during the test process and cannot actively intervene in the braking process of the elevator. This means that in actual operation, if the braking effect of the elevator is poor or the speed is too fast, the device cannot detect it in time and take corresponding measures. Once insufficient braking is found, the device cannot automatically adjust or trigger emergency stop measures, which may cause damage to the elevator test sample or safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide an elevator braking performance detection device, which can actively intervene in the elevator braking process after the elevator braking performance detection is completed, so as to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an elevator braking performance detection device, comprising:

[0005] A back plate, a right-angle bracket is fixed on the outer wall of one side of the back plate, a cylinder 1 is installed on the inner wall of one side of the right-angle bracket, a vertical plate is installed on the top of the piston rod of the cylinder 1, a brake guide plate is fixed on the outer wall of one side of the vertical plate, and two inverted U-shaped platforms for supporting the elevator box body are slidably installed on the surface of the brake guide plate;

[0006] The outer walls of both sides of the vertical plate are both installed with acceleration detection units, and the back of the back plate is installed with a PLC control panel electrically connected to the output end of the acceleration detection unit;

[0007] A double-point blocking structure for preventing the inverted U-shaped platform from sliding down is installed at one end of the back panel surface. Active braking mechanisms for stopping the inverted U-shaped platform are provided on the outer walls on both sides of the back panel. The output end of the PLC control panel is electrically connected to the input end of cylinder 1 and the active braking mechanism.

[0008] Preferably, four guide rails are installed on the outer wall of one side of the brake guide plate, and a slide is slidably installed at one end of the surface of the four guide rails, and the surface of the slide is fixedly connected to the back side of the inverted U-shaped platform.

[0009] Preferably, the acceleration detection unit includes a right-angle guard plate fixed on the outer walls on both sides of the vertical plate, and a speed sensor installed on the outer wall on one side of the right-angle guard plate close to the vertical center line of the brake guide plate, and the output end of the speed sensor is electrically connected to the input end of the PLC control panel.

[0010] Preferably, the dual-point blocking structure includes a boss fixed to one end of the back plate surface, and rubber columns symmetrically installed at both ends of the boss surface.

[0011] Preferably, the active braking mechanism includes a convex plate fixed on the outer walls on both sides of the back plate, and a U-shaped frame fixed on the surface of the convex plate, a truss is hinged on the top of the U-shaped frame, two cylinders 2 are hinged on the outer wall on one side of the convex plate, the input end of the cylinder 2 is electrically connected to the output end of the PLC control panel, a fisheye joint is fixed on the top of the piston rod of the cylinder 2, a bent arm is fixed on the outer wall of the truss on one side close to the cylinder 2, one end of the bent arm is hinged to the fisheye joint, and a rubber strip is fixed on the outer wall on the other side of the truss.

[0012] Preferably, the rubber strip and the truss are of equal length.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the elevator braking performance detection device is provided with an active braking mechanism and an inverted U-shaped platform and other structures that cooperate with each other. The speed sensor detects the instantaneous acceleration of the inverted U-shaped platform and the elevator box sample, thereby indirectly judging the braking performance of the elevator box sample. The two active braking mechanisms clamp and apply force to the outer walls on both sides of the inverted U-shaped platform to achieve the purpose of active braking. It can actively intervene in the braking process of the elevator after the elevator braking performance test is completed, and can timely trigger the braking mechanism to increase the braking force to ensure that the elevator can stop safely, thereby effectively avoiding elevator damage and safety hazards caused by insufficient braking. Even if other safety systems and braking systems in the elevator fail or fail, the active braking mechanism in the device can still play a backup protection role to ensure that the elevator can stop in time in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the utility model;

[0019] In the figure: 1. back plate; 101. boss; 102. rubber column; 2. right-angle bracket; 3. cylinder one; 4. vertical plate; 5. brake guide plate; 6. inverted U-shaped platform; 7. right-angle guard plate; 8. speed sensor; 9. PLC control panel; 10. active brake mechanism; 1001. boss; 1002. U-shaped frame; 1003. truss; 1004. cylinder two; 1005. bent arm; 1006. rubber strip. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides an embodiment: an elevator braking performance detection device, comprising a back plate 1, a right-angle bracket 2 is fixed on the outer wall of one side of the back plate 1, a cylinder 3 is installed on the inner wall of one side of the right-angle bracket 2, a vertical plate 4 is installed on the top of the piston rod of the cylinder 3, a brake guide plate 5 is fixed on the outer wall of one side of the vertical plate 4, two inverted U-shaped platforms 6 for supporting the elevator box body are slidably installed on the surface of the brake guide plate 5, and the elevator box sample to be tested is located at the top of the two inverted U-shaped platforms 6, four guide rails are installed on the outer wall of one side of the brake guide plate 5, and one end of the surface of the four guide rails is slidably installed with a slide, and the surface of the slide is fixedly connected to the back of the inverted U-shaped platform 6, and the guide rails and the slide are used to improve the sliding stability of the inverted U-shaped platform 6;

[0022] Acceleration detection units are installed on both side outer walls of the vertical plate 4, and a PLC control panel 9 electrically connected to the output end of the acceleration detection unit is installed on the back of the back plate 1. The acceleration detection unit includes a right-angle guard plate 7 fixed on the outer walls of both sides of the vertical plate 4, and a speed sensor 8 installed on the outer wall of one side of the right-angle guard plate 7 close to the vertical center line of the brake guide plate 5. The output end of the speed sensor 8 is electrically connected to the input end of the PLC control panel 9. When it is necessary to test the braking performance of the elevator box sample, the elevator box sample moves downward under the action of the external traction machine, and the elevator box is stopped by the elevator brake, that is, the elevator box sample and the inverted U-shaped platform 6 move downward together;

[0023] The speed sensor 8 detects the instantaneous acceleration of the inverted U-shaped platform 6 and the elevator box sample. By repeating the above operation several times, the speed sensor 8 obtains the instantaneous acceleration of multiple elevator box samples, thereby indirectly judging the braking performance of the elevator box sample;

[0024] A double-point blocking structure for blocking the inverted U-shaped platform 6 from sliding down is installed at one end of the surface of the back plate 1. Both outer walls on both sides of the back plate 1 are used for active braking mechanisms 10 for stopping the inverted U-shaped platform 6. The output end of the PLC control panel 9 is electrically connected to the cylinder 1 3 and the input end of the active braking mechanism 10. When the speed sensor 8 detects an acceleration signal, the speed sensor 8 sends the signal to the PLC control panel 9, and the PLC control panel 9 synchronously starts the active braking mechanism 10 to work. Then, the two active braking mechanisms 10 are synchronously operated on both sides of the inverted U-shaped platform 6, that is, the two active braking mechanisms 10 clamp and apply force to the outer walls on both sides of the inverted U-shaped platform 6 to achieve the purpose of active braking.

[0025] The double-point blocking structure includes a boss 101 fixed to one end of the surface of the back plate 1, and rubber columns 102 symmetrically installed at both ends of the surface of the boss 101;

[0026] When the speed sensor 8 detects that the inverted U-shaped platform 6 and the elevator box sample are too fast, the active brake mechanism 10 acts synchronously, and the cylinder 13 pulls the vertical plate 4, the brake guide plate 5, the inverted U-shaped platform 6 and other components to move toward the back plate 1, that is, the brake guide plate 5 and the rubber column 102 are misaligned, so that the rubber column 102 protrudes from the back of the brake guide plate 5. After the inverted U-shaped platform 6 falls to the limit position, the rubber column 102 can block the inverted U-shaped platform 6 and the elevator box sample, achieving the purpose of secondary braking and blocking, and ensuring the reliability of the device;

[0027] The active brake mechanism 10 includes a convex plate 1001 fixed on the outer walls of both sides of the back plate 1, and a U-shaped frame 1002 fixed on the surface of the convex plate 1001, a truss 1003 is hinged on the top of the U-shaped frame 1002, two cylinders 1004 are hinged on the outer wall of one side of the convex plate 1001, the input end of the cylinder 1004 is electrically connected to the output end of the PLC control panel 9, a fisheye joint is fixed on the top of the piston rod of the cylinder 1004, a bent arm 1005 is fixed on the outer wall of one side of the truss 1003 close to the cylinder 1004, one end of the bent arm 1005 and the fisheye joint are hinged to each other, and a rubber strip 1006 is fixed on the outer wall of the other side of the truss 1003, and the rubber strip 1006 and the truss 1003 are of equal length;

[0028] When the active braking mechanism 10 is performing the braking action, the PLC control panel 9 actively controls the cylinder 2 1004, and the cylinder 2 1004 controls the flipping of the truss 1003 through the fisheye joint and the bent arm 1005, and then the rubber strip 1006 contacts the outer wall of the inverted U-shaped platform 6, thereby achieving the purpose of active braking and ensuring that the elevator can stop in time in an emergency, making the device more independent and reliable, reducing dependence on other systems, and further improving the effect and safety of elevator braking performance detection.

[0029] When the embodiment of the present application is in use, first, the elevator box sample to be tested is located at the top of the two inverted U-shaped platforms 6. When the braking performance of the elevator box sample needs to be tested, the elevator box sample moves downward under the action of the external traction machine, and the elevator box is braked by the elevator brake, that is, the elevator box sample and the inverted U-shaped platform 6 move downward together. At this time, the speed sensor 8 detects the instantaneous acceleration of the inverted U-shaped platform 6 and the elevator box sample. By repeating the above operation several times, the speed sensor 8 obtains the instantaneous acceleration of multiple elevator box samples, thereby indirectly judging the braking performance of the elevator box sample. When the speed sensor 8 detects the acceleration signal, the speed sensor 8 sends the signal to the PLC control panel 9, and the PLC control panel 9 When the active braking mechanism 10 is started synchronously, the two active braking mechanisms 10 will act synchronously on both sides of the inverted U-shaped platform 6, that is, the two active braking mechanisms 10 clamp and apply force to the outer walls of the two sides of the inverted U-shaped platform 6 to achieve the purpose of active braking. It can actively intervene in the braking process of the elevator after the elevator braking performance test is completed, and can trigger the braking mechanism in time to increase the braking force to ensure that the elevator can stop safely, thereby effectively avoiding elevator damage and safety hazards caused by insufficient braking. Even if other safety systems and brake systems in the elevator fail or fail, the active braking mechanism 10 in the device can still play a backup protection role to ensure that the elevator can stop in time in an emergency, which can provide higher safety protection.

Claims

1. An elevator braking performance detection device, characterized in that: include: A back plate (1), a right-angle bracket (2) is fixed on the outer wall of one side of the back plate (1), a cylinder (3) is installed on the inner wall of one side of the right-angle bracket (2), a vertical plate (4) is installed on the top of the piston rod of the cylinder (3), a brake guide plate (5) is fixed on the outer wall of one side of the vertical plate (4), and two inverted U-shaped platforms (6) for supporting the elevator box body are slidably installed on the surface of the brake guide plate (5); Acceleration detection units are installed on both side outer walls of the vertical plate (4), and a PLC control panel (9) electrically connected to the output end of the acceleration detection unit is installed on the back of the back plate (1); A double-point blocking structure for blocking the inverted U-shaped platform (6) from sliding down is installed at one end of the surface of the back plate (1), and active braking mechanisms (10) for stopping the inverted U-shaped platform (6) are provided on the outer walls on both sides of the back plate (1), and the output end of the PLC control panel (9) is electrically connected to the cylinder 1 (3) and the input end of the active braking mechanism (10).

2. The elevator braking performance detection device according to claim 1 is characterized in that: Four guide rails are installed on the outer wall of one side of the braking guide plate (5), and a slide table is slidably installed at one end of the surface of the four guide rails, and the surface of the slide table is fixedly connected to the back side of the inverted U-shaped platform (6).

3. The elevator braking performance detection device according to claim 1, characterized in that: The acceleration detection unit comprises a right-angle guard plate (7) fixed on the outer walls on both sides of the vertical plate (4), and a speed sensor (8) installed on the outer wall on one side of the right-angle guard plate (7) close to the vertical center line of the brake guide plate (5), and the output end of the speed sensor (8) is electrically connected to the input end of the PLC control panel (9).

4. The elevator braking performance detection device according to claim 1, characterized in that: The dual-point blocking structure comprises a boss (101) fixed on one end of the surface of the back plate (1), and rubber columns (102) symmetrically installed at both ends of the surface of the boss (101).

5. The elevator braking performance detection device according to claim 1, characterized in that: The active brake mechanism (10) comprises a convex plate (1001) fixed on the outer walls of both sides of the back plate (1), and a U-shaped frame (1002) fixed on the surface of the convex plate (1001), the top end of the U-shaped frame (1002) is hinged with a truss (1003), the outer wall of one side of the convex plate (1001) is hinged with two cylinders (1004), the input end of the cylinder (1004) is electrically connected to the output end of the PLC control panel (9), the top end of the piston rod of the cylinder (1004) is fixed with a fisheye joint, the outer wall of one side of the truss (1003) close to the cylinder (1004) is fixed with a bent arm (1005), one end of the bent arm (1005) and the fisheye joint are hinged to each other, and the outer wall of the other side of the truss (1003) is fixed with a rubber strip (1006).

6. The elevator braking performance detection device according to claim 5, characterized in that: The rubber strip (1006) and the truss (1003) are of equal length.

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