CN204512059U - There is the hydraulic jack of monitoring oily leakage function - Google Patents

Abstract

The utility model relates to a hydraulic oil cylinder with the function of monitoring oil leakage, which comprises a hydraulic oil cylinder, a flow monitor, a stroke detector and a controller. The stroke detector is connected to the piston rod of the hydraulic cylinder, and the flow monitor and the stroke detector are connected to the controller signal; the utility model can conveniently detect whether the hydraulic cylinder is leaking, and can timely feedback the leakage problem to the work Personnel, avoiding a series of problems caused by hydraulic cylinder leakage, improving work efficiency and saving working time.

Description

Hydraulic cylinder with oil leakage monitoring function

technical field

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with the function of monitoring oil leakage.

Background technique

A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swing motion). It has simple structure and reliable operation. When it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is stable, so it is widely used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. Buffers and exhausts are application specific and others are essential.

However, existing hydraulic cylinders suffer from air ingress in the hydraulic system, mainly because of leaks in the system. At this time, check the liquid level of the hydraulic oil tank, the seals and pipe joints on the oil suction side of the hydraulic pump, and whether the oil suction coarse filter is too dirty. If so, the hydraulic oil should be replenished, the seals and pipe joints should be dealt with, and the coarse filter element should be cleaned or replaced. However, it is very difficult to check for leakage, so it is necessary to find a simple and quick method to make up for the deficiency.

Utility model content

The technical problem to be solved by the utility model is to provide a hydraulic oil cylinder with the function of monitoring oil leakage in order to overcome the problem of inconvenient inspection of hydraulic system leakage in the prior art.

The technical solution adopted by the utility model to solve the technical problem is: a hydraulic cylinder with the function of monitoring oil leakage, including a hydraulic cylinder, a flow monitor, a stroke detector and a controller, and the oil inlet of the hydraulic cylinder is fixedly installed A flow monitor, a stroke detector is fixedly installed at the end of the hydraulic cylinder, and the stroke detector is in contact with the piston rod of the hydraulic cylinder, and both the flow monitor and the stroke detector are connected to the controller signal, and the normal hydraulic cylinder , the oil intake and the moving length of the piston rod can be calculated, so detecting the oil intake of the hydraulic cylinder and the moving stroke of the piston rod of the hydraulic cylinder can effectively detect whether there is leakage in the hydraulic cylinder.

In order to measure the leakage detection part of the hydraulic cylinder more effectively, a second flow monitor is fixedly installed on the oil outlet of the hydraulic cylinder, and the signal of the second flow monitor is connected to the controller.

In order to avoid problems caused by hydraulic cylinder leakage, it is necessary to inform the staff at the first time that the controller signal is connected to the alarm device.

When the oil enters the hydraulic cylinder through the oil inlet of the hydraulic cylinder, the flow monitor detects the amount of oil entering. When the oil enters the cylinder, the piston rod moves forward, and the stroke of the piston rod is detected by the stroke detector. The flow monitor and The stroke detector transmits the detected data information to the controller, and the controller performs comparison. If an error is found after the comparison, the alarm will alarm and inform the staff. While the piston rod moves forward, the oil flows out from the oil outlet, and the data is transmitted to the controller after being detected by the second flow monitor. The controller can obtain the approximate location of the hydraulic cylinder leakage by comparing the oil intake with the stroke of the piston rod, the oil intake and the oil output, that is, when there is an error between the oil intake and the stroke required to move the piston, the oil output If it is equal to the oil intake, the leakage position should be between the oil outlet and the piston; when there is no error between the oil intake and the stroke required to move the piston, if the oil output is less than the oil intake, the leakage position should be between the piston and the oil outlet.

The beneficial effects of the utility model are: the utility model can conveniently detect whether the hydraulic cylinder is leaking, and can timely feed back the leakage problem to the staff, avoiding a series of problems caused by the hydraulic cylinder leakage, improving work efficiency, saving working hours.

Description of drawings

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

Fig. 1 is a two-dimensional schematic diagram of the utility model.

In the figure: 1. Hydraulic cylinder, 2. Flow monitor, 3. Stroke detector, 4. Controller, 5. Oil inlet, 6. Piston rod, 7. Oil outlet, 8. Second flow monitor, 9. Alarm device, 10. Piston.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figure 1, a hydraulic cylinder with the function of monitoring oil leakage includes a hydraulic cylinder 1, a flow monitor 2, a stroke detector 3 and a controller 4, and a flow rate is fixedly installed on the oil inlet 5 of the hydraulic cylinder 1. A monitor 2, a stroke detector 3 is fixedly installed at the end of the hydraulic cylinder 1, the stroke detector 3 is in contact with the piston rod 6 of the hydraulic cylinder 1, and the flow monitor 2 and the stroke detector 3 are connected to the controller 4 signal connection, the normal hydraulic cylinder 1, the oil intake and the moving length of the piston rod 6 can be calculated, so detecting the oil intake of the hydraulic cylinder 1 and the moving stroke of the piston rod 6 of the hydraulic cylinder 1 can effectively detect the hydraulic pressure Is there a leak in cylinder 1?

In order to measure the leak detection position of the hydraulic cylinder 1 more effectively, a second flow monitor 8 is fixedly installed on the oil outlet 7 of the hydraulic cylinder 1 , and the second flow monitor 8 is connected to the controller 4 for signals.

In order to avoid problems caused by the leakage of the hydraulic cylinder 1, it is necessary to inform the staff at the first time that the controller 4 is connected to the alarm device 9 with a signal.

When the oil enters the hydraulic cylinder 1 through the oil inlet 5 of the hydraulic cylinder 1, the flow monitor 2 detects the amount of oil entering. When the oil enters the cylinder, the piston rod 6 moves forward, and the stroke of the piston rod 6 is controlled by the stroke detector. 3 detection, the flow monitor 2 and the travel detector 3 transmit the detected data information to the controller 4, and the controller 4 performs a comparison. If an error is found after the comparison, the alarm will alarm and inform the staff. While the piston rod 6 moves forward, the oil flows out from the oil outlet 7 , and the data is transmitted to the controller 4 after being detected by the second flow monitor 8 . The controller 4 can obtain the approximate location of the leakage of the hydraulic cylinder 1 by comparing the oil inlet amount with the stroke of the piston rod 6, the oil inlet amount and the oil outlet amount, that is, when there is an error between the oil inlet amount and the stroke required to move the piston 10 , the oil output is equal to the oil input, then the leakage location should be between the oil outlet 7 and the piston 10; , the leakage location should be between the piston 10 and the oil outlet 7.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (3)

1. one kind has the hydraulic jack of monitoring oily leakage function, it is characterized in that: comprise hydraulic jack (1), flow monitor (2), stroke detector (3) and controller (4), the filler opening (5) of described hydraulic jack (1) fixedly mounts flow monitor (2), described hydraulic jack (1) end winding support installs stroke detector (3), described stroke detector (3) contacts with the piston rod (6) of hydraulic jack (1) and connects, described flow monitor (2) is all connected with controller (4) signal with stroke detector (3).

2. there is the hydraulic jack of monitoring oily leakage function as claimed in claim 1, it is characterized in that: the oil outlet (7) of described hydraulic jack (1) is installed with the second flow monitor (8), described second flow monitor (8) signal connection control device (4).

3. there is the hydraulic jack of monitoring oily leakage function as claimed in claim 1, it is characterized in that: described controller (4) signal connects warning device (9).