CN204079139U - Elevator fluid pressure type safety leveling device again - Google Patents

Abstract

The utility model relates to an elevator hydraulic safety re-leveling device, which consists of an elevator hydraulic safety re-leveling device, a car upper beam, a fixed rope head plate, a hydraulic control system, a position detection device, and a leveling position magnetic grid , hydraulic pump station system, guide device, oil cylinder, oil pipe, taper sleeve combination system, movable rope head plate, lower switch, switch strike plate, switch frame, upper switch and unloading spring. The piston rod of the oil cylinder is fixed on the fixed rope On the headboard, its back cover is installed on the movable rope headboard. The position detection device, the hydraulic control system, the hydraulic pump station system and the oil cylinder are connected in sequence through oil pipes. This structure adjusts the re-leveling position of the elevator through the detection of the position detection device and the hydraulic control system controls the oil cylinder.

Description

Elevator hydraulic safety re-leveling device

Technical field:

The utility model relates to a hydraulic safety re-leveling device, which belongs to the technical field of elevators.

Background technique:

Today's elevators are generally variable-frequency, variable-voltage, and variable-speed elevators. The permanent magnet synchronous motor is controlled by the frequency converter to drive the main engine. When starting, there must be weighing compensation, otherwise the car will slip. The biggest disadvantage of the existing door-opening and re-leveling device is: when opening the door and re-leveling, the moving car must first be connected in parallel with the door lock circuit, then open the traction machine brake, and then power on to make the traction machine rotate before moving The car realizes door opening and then leveling. At this time, the elevator car door and hall door are open, and there are passengers entering and leaving the car. Since the weighing compensation is inherently inaccurate, the linearity is not good, or the accuracy is affected by environmental changes. There are passengers entering and leaving, and the weight in the car is always changing. , making the weighing more unstable, so that when the main engine brake is opened, it is easy to make the car slide, such as slipping out of the door area, which may cause shearing danger to the passengers entering and leaving the car.

Invention content:

The technical problem to be solved by the utility model is to provide a hydraulic safety re-leveling device for adjusting the re-leveling position of the elevator after the quality of the elevator car changes, and preventing the car from sliding due to the re-leveling of the elevator door.

In order to solve the above technical problems, the utility model provides a hydraulic safety re-leveling device for an elevator, which includes a position detection device, a leveling position magnetic grid fixed rope head plate, a movable rope head plate, a taper sleeve combination system and a car upper beam, The leveling position magnetic grid is fixed in the shaft wall and one piece for each floor. The fixed rope head plate is installed at the lower part of the upper beam of the car. The movable rope head plate is placed in parallel with the fixed rope head plate. The switch frame is installed on the movable rope head plate. The lower switch and the upper switch are installed on the switch frame, and the switch striker is connected to one side of the upper beam of the car. Equipped with a re-leveling adjustment device, the re-leveling adjustment device is composed of a hydraulic control system, a hydraulic pump station system, an oil cylinder, and an unloading spring. The plates are fixedly connected, the hydraulic control system is connected with the position detection device, the hydraulic pump station system is respectively connected to the oil cylinder and the hydraulic control system through oil pipes, and the unloading spring is installed between the fixed rope head plate and the movable rope head plate.

A guide device is arranged between the fixed rope head plate and the movable rope head plate of the elevator hydraulic safety re-leveling device.

An installation method in which the unloading spring of the elevator hydraulic safety re-leveling device is sleeved on the guide device.

Another installation method of the unloading spring sleeve of the elevator hydraulic safety re-leveling device on the taper sleeve combination system.

Another installation method of the elevator hydraulic safety re-leveling device is that the unloading spring is sleeved on the oil cylinder.

After adopting this structure, when the door of the car is opened for re-leveling, the elevator hydraulic safety re-leveling device moves the car without releasing the brake and without rotating the traction machine. Realize safe re-leveling, and effectively prevent the car door from sliding and causing shear damage to passengers entering and leaving the car after door opening and re-leveling.

Description of drawings:

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

Fig. 1 is a front view of the utility model.

Fig. 2 is a front view of another installation method of the unloading spring of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail:

According to a hydraulic safety re-leveling device for an elevator shown in Figure 1, it includes a position detection device 4, a leveling position magnetic grid 5, a fixed rope head plate 2, a movable rope head plate 11, a taper sleeve combination system 10 and a car upper beam 1. The leveling position magnetic grid 5 is fixed in the shaft wall and one piece for each floor. The fixed rope head plate 2 is installed at the lower part of the car upper beam 1. The movable rope head plate 11 is placed in parallel with the fixed rope head plate 2. The movable rope head plate 2 A switch frame 14 is installed on the plate 11, a lower switch 12 and an upper switch 15 are installed on the switch frame 14, a switch strike plate 13 is connected to one side of the upper beam 1 of the car, and the taper sleeve combination system 10 passes through the fixed rope head plate 2, The taper sleeve combination system 10 passes through the movable rope head plate 11, and a re-leveling adjustment device is installed on the upper beam 1 of the car. The re-leveling adjustment device is composed of a hydraulic control system 3, a hydraulic pump station system 6, an oil cylinder 8, and an Composed of 16, the upper piston rod of the oil cylinder 8 is fixedly connected with the fixed rope head plate 2, the lower cylinder body of the oil cylinder 8 is fixedly connected with the movable rope head plate 11, the hydraulic control system 3 is connected with the position detection device 4, and the hydraulic pump station system 6 passes through the oil pipe 9 They are respectively connected to the oil cylinder 8 and the hydraulic control system 3, and the unloading spring 8 is installed between the fixed rope head plate 2 and the movable rope head plate 11.

A guide device 7 is arranged between the fixed rope head plate 2 and the movable rope head plate 11 of the elevator hydraulic safety re-leveling device shown in FIG. 1 .

The elevator hydraulic safety re-leveling device unloading spring 16 shown in Figure 2 is sleeved on the guide device 7.

The unloading spring 16 of the elevator hydraulic safety re-leveling device shown in FIG. 1 is sleeved on the taper sleeve combination system 10 .

The elevator hydraulic safety re-leveling device unloading spring 16 shown in Fig. 2 is sleeved on the oil cylinder 8.

The elevator hydraulic safety re-leveling device must be divided into two operating conditions to achieve re-leveling performance after each elevator operation. 1. Reset of elevator hydraulic safety re-leveling device; 2. Re-leveling of elevator hydraulic safety re-leveling device.

1. Reset of elevator hydraulic safety re-leveling device

In order to ensure that the elevator hydraulic safety re-leveling device can achieve re-leveling performance after each elevator operation, the reset movable rope head plate of the elevator hydraulic safety re-leveling device must be completed synchronously during the process of closing, starting and running the elevator 11 operations. The elevator door closing, starting, and running signals are sent to the hydraulic control system 3, and the hydraulic control system 3 simultaneously controls the hydraulic pump station system 6 to drive the oil cylinder 8 to work according to the on-off status of the lower switch 12 and the upper switch 15, and adjusts the movable rope head plate 11 With the spacing between the fixed rope head plate 2, the operation of returning to the original position is completed, that is, the movable rope head plate 11 resets. There are three cases of reset operation:

A: The lower switch 12 is turned on and the upper switch 15 is turned off

The first situation A makes the hydraulic control system 3 control the hydraulic pump station system 6 to drive the oil cylinder 8 to work, so that the oil cylinder 8 rises, the unloading spring 16 is extended, and the distance between the fixed rope head plate 2 and the movable rope head plate 11 increases gradually. The distance between top switch 15 and switch strike plate 13 approaches gradually, until switch strike plate 13 pushes top switch 15, makes top switch 15 be connected, and bottom switch 12 still remains connected simultaneously. After the hydraulic control system 3 gets the signal that the two switches are connected at the same time, it immediately controls the hydraulic pump station system 6 to stop driving the oil cylinder 8 to rise, and completes the reset operation of the movable rope head plate 11.

B: The lower switch 12 is off and the upper switch 15 is on

The second situation B makes the hydraulic control system 3 control the hydraulic pump station system 6 to drive the oil cylinder 8 to work, so that the oil cylinder 8 is lowered, the unloading spring 16 is compressed, and the distance between the fixed rope head plate 2 and the movable rope head plate 11 is gradually reduced. The distance between lower switch 12 and switch strike plate 13 is gradually approaching, until switch strike plate 13 pushes down switch 12, lower switch 12 is connected, and top switch 15 still remains connected simultaneously. After the hydraulic control system 3 gets the signal that the two switches are connected at the same time, it immediately controls the hydraulic pump station system 6 to stop driving the oil cylinder 8 to descend, and completes the reset operation of the movable rope head plate 11.

C: The lower switch 12 is turned on, and the upper switch 15 is turned on

In the third case C, the hydraulic control system 3 obtains the signals that the two switches are turned on at the same time, without any further operation, and the reset operation of the movable rope head plate 11 has been completed.

2. Re-leveling of elevator hydraulic safety re-leveling device

After the elevator stops at the station, levels the floor, and opens the door, the load in the car changes due to passengers entering and leaving the car. The load change of the car makes the traction wire rope stretch or shorten elastically, thus causing uneven layers. When the load decreases, the car moves up; when the load increases, the car moves down. For this reason, the re-leveling is divided into two situations: the re-leveling of the upper deviation uneven layer and the lower deviation uneven layer, that is, the re-leveling of the car downwards, and the re-leveling of the car upwards.

A: Instructions for re-leveling of the upper deviation uneven layer:

The load in the car becomes lighter (for example, when passengers leave the car), the traction wire rope is shortened, and the car moves upward through the action of the steel wire rope and taper sleeve combination system 10. The sill of the car door is a distance higher than the sill of the hall door. At this time, the car leveling induction position detection device 4 detects the magnetic grid 5 fixed on the leveling position of each layer in the hoistway, and obtains the signal of the deviation on the first leveling layer of the car, and sends it to the hydraulic control system 3 through the cable, and then passes through the hydraulic pressure. The control system 3 controls the hydraulic pump station system 6 after calculation, the driving oil cylinder 8 descends, the compression unloading spring 16, the spacing between the fixed rope head plate 2 and the movable rope head 11 gradually decreases, and finally reduces the distance. At this time, the car leveling induction position detection device 4 obtains that the car is already in the leveling state by detecting the magnetic grid 5 fixed at the leveling position in the hoistway, and then sends a leveling signal to the hydraulic control system 3, and the hydraulic control system 3 Immediately control the hydraulic pump station system 6 to stop driving the oil cylinder 8, thereby realizing that the car is leveled down again.

B: Description of re-leveling of lower deviation uneven layer:

The weight loaded in the car becomes heavier (for example, passengers enter the car), which makes the traction wire rope stretch, and the car moves down through the action of the steel wire rope and taper sleeve combination system 10, and the leveling deviation of the elevator occurs , the sill of the car door is lower than the sill of the hall door by a distance. At this time, the car leveling induction position detection device 4 detects the magnetic grid 5 fixed on the leveling position of each floor in the hoistway, and obtains the signal of the lower deviation of the first leveling layer of the car, and sends it to the hydraulic control system 3 through the cable. The control system 3 controls the hydraulic pump station system 6 after the calculation, the driving oil cylinder 8 rises, the unloading spring 16 is elongated, and the distance between the fixed rope head plate 2 and the movable rope head plate 11 increases gradually, and finally increases. At this time, the car leveling induction position detection device 4 obtains that the car is already in the leveling state by detecting the magnetic grid 5 fixed at the leveling position in the hoistway, and then sends a leveling signal to the hydraulic control system 3, and the hydraulic control system 3 Immediately control the hydraulic pump station system 6 to stop driving the oil cylinder 8, thereby realizing that the car is leveled down again.

It should be emphasized that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and Modifications still belong to the scope of the technical solution of the utility model.

Claims (5)

1. A hydraulic safety re-leveling device for an elevator, including a position detection device (4), a leveling position magnetic grid (5), a fixed rope head plate (2), a movable rope head plate (11), and a taper sleeve combination system ( 10) and the car upper beam (1), the leveling position magnetic grid (5) is fixed in the shaft wall and one piece for each floor, the fixed rope head plate (2) is installed at the lower part of the car upper beam (1), and the movable rope The head plate (11) is placed in parallel with the fixed rope head plate (2), the switch frame (14) is installed on the movable rope head plate (11), and the lower switch (12) and the upper switch (15) are installed on the switch frame (14). ), the side of the car upper beam (1) is connected with a switch strike plate (13), the taper sleeve combination system (10) passes through the fixed rope head plate (2), and the taper sleeve combination system (10) passes through the movable rope head plate (11), characterized in that: the upper beam of the car (1) is provided with a re-leveling adjustment device, and the re-leveling adjustment device is composed of a hydraulic control system (3), a hydraulic pump station system (6), an oil cylinder (8 ), the unloading spring (16), the upper piston rod of the oil cylinder (8) is fixedly connected with the fixed rope head plate (2), the lower cylinder body of the oil cylinder (8) is fixedly connected with the movable rope head plate (11), and the The hydraulic control system (3) is connected to the position detection device (4), the hydraulic pump station system (6) is respectively connected to the oil cylinder (8) and the hydraulic control system (3) through the oil pipe (9), and the unloading spring ( 16) Install between the fixed rope head plate (2) and the movable rope head plate (11). 2. The elevator hydraulic safety re-leveling device according to claim 1, characterized in that: a guide device (7) is arranged between the fixed rope head plate (2) and the movable rope head plate (11). 3. The elevator hydraulic safety re-leveling device according to claim 2, characterized in that: the unloading spring (16) is sleeved on the guide device (7). 4. The elevator hydraulic safety re-leveling device according to claim 1, characterized in that: the unloading spring (16) is sleeved on the taper sleeve combination system (10). 5. The elevator hydraulic safety re-leveling device according to claim 1, characterized in that: the unloading spring (16) is sleeved on the oil cylinder (8).