CN207946186U - A dynamic test device for elevator traction braking torque - Google Patents

Abstract

The utility model provides a kind of elevator traction machine braking moment dynamic checkout unit, including driving mechanism, test suite and traction machine, driving mechanism can drive test suite closer or far from traction machine, test suite includes testing of electric motors, test sensor and pull-fork assembly, testing of electric motors and pull-fork assembly with test sensor flanged joint, pull-fork assembly includes shifting fork disc, and shifting fork disc, which is equipped with, can be caught in the wheel hub of traction machine the shift fork of rotation stop cooperation therewith.Traction machine is in on-position when test, driving mechanism shift fork coordinates with traction machine wheel hub rotation stop, testing of electric motors transfers a torque to shift fork by testing sensor, and then drive traction machine rotation, the torque value of test sensor measurement is the dynamic brake force moment of traction machine, test terminates rear drive mechanism shift fork and is separated with traction machine, measures precisely and is damaged to traction machine smaller.

Description

A dynamic test device for elevator traction braking torque

technical field

The utility model relates to the field of elevators, in particular to an elevator traction braking torque dynamic testing device.

Background technique

Elevators are an important part of modern buildings. The traction machine is the driving part of the elevator. Its performance and stability determine many aspects of the elevator, such as safety, reliability, and comfortable ride.

The braking torque is one of the main parameters of the traction machine. The braking torque is divided into static torque and dynamic torque. The initial test of the braking torque of the traction is mainly the test of the static torque. The test method is the hanging weight method. The heavy method is that after the traction machine is braked, first fix a lever on the traction wheel, then hang a heavy object on the lever, and gradually increase the weight, and observe carefully until the traction machine starts to rotate. The weight multiplied by the length of the lever is the static braking torque of the traction machine brake. With the development of the elevator industry, the traction machine, as one of the important components of the elevator, has higher and higher requirements for the brake test and is more and more accurate. After research, it is found that the main factor that determines the safety and operating comfort of the elevator is the dynamic torque of the traction machine, not the static torque. If the dynamic torque is too large, it will affect the slipping and buffering of the wire rope. If the dynamic torque does not meet the design requirements, it will affect the traction. The braking distance of the elevator will bring safety hazards to the operation of the elevator.

At present, the test method for the dynamic torque of the traction machine is: when the traction machine is running at the rated speed, brake suddenly, and read the dynamic braking torque on the frequency converter, but the reading error is relatively large, up to 300N .m, which is far from meeting the requirements of accurate measurement. Moreover, because it is a sudden braking with load, it will cause great damage to the traction machine, and this test method is detrimental to the service life of the traction machine components.

Utility model content

The technical problem to be solved by the utility model is to provide an elevator traction braking torque dynamic testing device which can accurately test the dynamic torque of the traction machine and has less damage to the traction machine.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a dynamic testing device for elevator traction braking torque, including a driving mechanism, a testing component and a traction machine, the driving mechanism can drive the testing component close to or away from the traction machine, The test assembly includes a test motor, a test sensor and a shift fork assembly. Both the test motor and the shift fork assembly are flange-connected to the test sensor. The fork assembly includes a shift fork plate. The shift fork that cooperates with it.

The upper cover of the shift fork is provided with a shock-absorbing sleeve.

The test device also includes a fixed platform and a mobile platform, the driving mechanism is fixed on the fixed platform, the test components are fixed on the mobile platform, and the driving mechanism can drive the mobile platform to slide on the fixed platform.

The driving mechanism is installed at the bottom of the fixed platform, the driving mechanism is connected with a connection plate fixedly connected with the mobile platform, and the fixed platform is provided with a chute for the connection plate to slide.

The mobile platform is provided with a slide block, and the fixed platform is provided with a slide rail matched with the slide block.

A transmission connector is provided between the test sensor and the shift fork assembly. The transmission connector includes a support frame, a transmission shaft and a shaft sleeve. The support frame is fixed on the mobile platform, the shaft sleeve is fixed on the support frame, and the transmission shaft passes through the shaft sleeve. It is rotated and matched with it, and one end of the transmission shaft is connected with the key of the shift fork, and the other end is connected with the flange of the test sensor.

The test device also includes a traction machine installation platform. A positioning hole is set on the traction machine installation platform. A pilot pin is pierced in the positioning hole. A card slot is provided at the upper end of the pilot pin, and a pressure plate with an opening is clamped in the card slot. , the lower end of the guide pin is connected with a cylinder.

The test device also includes a control cabinet and a display screen, the control cabinet is connected with the test motor and the driving mechanism, and the display screen is connected with the test sensor.

The elevator traction mechanism dynamic torque testing device of the present utility model includes a driving mechanism, a testing component and a traction machine, the driving mechanism can drive the testing component close to or away from the traction machine, and the testing component includes a testing motor, a testing sensor and a shift fork component The test motor and the shift fork assembly are flange-connected with the test sensor. The shift fork assembly includes a shift fork plate, and the shift fork plate is provided with a shift fork that can be snapped into the wheel hub of the traction machine and cooperate with it to prevent rotation. During the test, the traction machine is in the braking state. The driving mechanism drives the shift fork to cooperate with the hub of the traction machine to stop the rotation. The test motor transmits the torque to the shift fork through the test sensor, and then drives the traction machine to rotate. The torque value measured by the test sensor is is the dynamic braking torque of the traction machine. After the test, the driving mechanism drives the shift fork to separate from the traction machine. The measurement is accurate and the damage to the traction machine is small.

Description of drawings

Fig. 1 is the structural representation of the specific embodiment one of the utility model;

Fig. 2 is the structural representation of fixed platform 1 and mobile platform 2 in Fig. 1;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is a schematic structural view of the shift fork assembly in Fig. 1;

Fig. 5 is a schematic structural diagram of the transmission connector in Fig. 1;

Fig. 6 is a structural schematic diagram of the traction machine installation platform 5 in Fig. 1;

Fig. 7 is a connection state diagram of the pilot pin 17 and the cylinder 20 in Fig. 6;

Fig. 8 is a schematic structural view of the pilot pin 17 in Fig. 6;

FIG. 9 is a schematic structural view of the pressing plate 19 with openings in FIG. 6 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Specific embodiment one of the elevator traction braking torque dynamic testing device of the present utility model, as shown in Fig. Traction machine installation platform 5.

As shown in Figure 2 and Figure 3, the drive mechanism 3 is a cylinder, installed on the lower surface of the fixed platform 1, the drive mechanism 3 is connected with a connecting plate 6 fixedly connected with the mobile platform 2, and the fixed platform 1 is provided with The chute where the plate 6 slides, and the driving mechanism 3 drives the connecting plate 6 to slide along the chute, thereby driving the mobile platform 2 to slide on the fixed platform 1 . The mobile platform 2 is provided with a slide block 7, and the fixed platform 1 is provided with a slide rail 8 compatible with the slide block 7. The matching slide block 7 and slide rail 8 are set to reduce the movement of the mobile platform 2 on the fixed platform. 1, in addition, it can also provide guidance for the sliding of the mobile platform 2, so as to avoid deflection during the sliding process and affect the test accuracy.

The test assembly includes a test motor 9, a reducer 10, a test sensor 11 and a shift fork assembly. The test motor 9 is an asynchronous motor for providing power, and the reducer 10 is a cycloid reducer, which can reduce the output speed to 20r/ min, the lower rotating speed can ensure the stability of the system during the torque test and reduce the measurement error caused by vibration. The test sensor 11 is connected with the reducer 10 and the fork assembly flange to detect the torque. The fork assembly includes the fork plate 12. As shown in Figure 4, the shift fork 12 is provided with shift forks 13 evenly distributed along the circumferential direction. The shock-absorbing sleeve can ensure the flexible connection between the shift fork 13 and the hub of the traction machine 4 and increase buffering.

A transmission connector is provided between the test sensor 11 and the shift fork assembly, as shown in Figure 5, the transmission connector includes a support frame 14, a transmission shaft 15 and an axle sleeve 16, and the support frame 14 is fixed on the mobile platform 2, and the axle sleeve 16 is fixed on the bracing frame 14, and the transmission shaft 15 is worn in the shaft sleeve 16 to rotate with it. One end of the transmission shaft 15 is connected with the shift fork plate 12 keys, and the other end is connected with the test sensor 11 flange.

As shown in Figures 6 to 9, a positioning hole is provided on the traction machine installation platform 5, and a pilot pin 17 is pierced in the positioning hole, and a card slot 18 is provided at the upper end of the pilot pin 17, and a card slot 18 is provided in the card slot 18. There is a pressing plate 19 with an opening, and a cylinder 20 is connected to the lower end of the pilot pin 18 . When the traction machine 4 is installed, first place the traction machine 4 on the traction machine installation platform 5, start the cylinder 20, the piston rod of the cylinder 20 pushes the pilot pin 17 into the anchor hole of the traction machine 4, and then Insert the pressure plate 19 with opening into the card slot 18, and then reversely start the cylinder 20, the piston rod of the cylinder 20 drives the guide pin 17 to retract, and the pressure plate 19 with opening in the card slot 18 presses the foot surface of the traction machine 4 , so that the traction machine 4 is fixed on the traction machine installation platform 5 .

The test device also includes a control cabinet 21 and a display screen 22. The control cabinet 21 is connected to the test motor 9 and the drive mechanism 3, thereby controlling the actions of the test motor 9 and the drive mechanism 3. The display screen 22 is connected to the test sensor 11 to facilitate the test process. Observe and record test data.

The usage process is as follows:

1) First install the traction machine 4 on the traction machine installation platform 5;

2) Control the action of the driving mechanism 3 through the control cabinet 21, and then push the mobile platform 2 to approach the traction machine 4. When the shift fork 13 is close to the traction wheel, observe whether the shift fork 13 can be inserted into the hub correspondingly. If there is any deviation, then Control the rotation of the test motor 9 through the control cabinet 21 jog, and then drive the shift fork plate 12 to rotate until the shift fork 13 can be inserted correspondingly;

3) The brake of the traction machine 4 is in the braking state. Control the test motor 9 through the control cabinet 21, first rotate clockwise for 20 seconds, test the dynamic torque of forward rotation, and then rotate counterclockwise for 20 seconds, test the dynamic torque of reverse rotation, and the test is completed after shutdown;

4) View the test data on the display screen 22, and record the forward and reverse braking torques respectively;

5) The control cabinet 21 controls the reverse movement of the driving mechanism 3, and then drives the sliding table 2 away from the traction machine 4, and the sliding table 2 drives the shift fork 13 to exit the traction wheel;

6) Loosen the cylinder 20, pull out the pressure plate 19 with opening, remove the traction machine 4, and the test is over.

Finally, it is explained that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model, as long as they do not depart from the technical solution of the utility model The spirit and scope should be included in the claims of the present utility model.

Claims (8)

1. A dynamic testing device for elevator traction braking torque, characterized in that it comprises a drive mechanism, a test assembly and a traction machine, the drive mechanism can drive the test assembly close to or away from the traction machine, and the test assembly includes a test motor, a test sensor And the fork assembly, the test motor and the fork assembly are connected with the test sensor flange, the fork assembly includes a fork plate, and the fork plate is provided with a fork that can be snapped into the wheel hub of the traction machine to cooperate with it to prevent rotation . 2. The elevator traction braking torque dynamic testing device according to claim 1, characterized in that a shock absorbing sleeve is sheathed on the shift fork. 3. The elevator traction braking torque dynamic testing device according to claim 1, wherein the testing device also includes a fixed platform and a mobile platform, the driving mechanism is fixed on the fixed platform, and the test assembly is fixed on the mobile platform, driving The mechanism can drive the mobile platform to slide on the fixed platform. 4. The elevator traction braking torque dynamic testing device according to claim 3, wherein the drive mechanism is installed on the bottom of the fixed platform, the drive mechanism is connected with a connecting plate fixedly connected with the mobile platform, and the fixed platform is provided with A chute through which the connecting plate slides. 5. The elevator traction braking torque dynamic testing device according to claim 4, characterized in that, the mobile platform is provided with a slider, and the fixed platform is provided with a slide rail adapted to the slider. 6. The elevator traction braking torque dynamic testing device according to claim 3, wherein a transmission connector is provided between the test sensor and the shift fork assembly, and the transmission connector includes a support frame, a transmission shaft and an axle sleeve, The support frame is fixed on the mobile platform, the shaft sleeve is fixed on the support frame, and the transmission shaft is passed through the shaft sleeve to rotate with it. One end of the transmission shaft is connected with the shift fork plate key, and the other end is connected with the test sensor flange. 7. The elevator traction braking torque dynamic test device according to claim 1, characterized in that the test device also includes a traction machine installation platform, a positioning hole is provided on the traction machine installation platform, and the positioning hole is pierced with a The pilot pin is provided with a card slot at the upper end of the pilot pin, and a pressing plate with an opening is clamped in the card slot, and a cylinder is connected with the lower end of the pilot pin. 8. The elevator traction braking torque dynamic test device according to claim 1, characterized in that the test device also includes a control cabinet and a display screen, the control cabinet is connected to the test motor and the drive mechanism, and the display screen is connected to the test sensor.