Automatic monitoring device for oil-gas lubrication system of rolling mill

Abstract

The utility model discloses an automatic monitoring device for an oil-gas lubrication system of a rolling mill. The automatic monitoring device comprises a shell, a flow detection sensor and a connecting unit, a core cylinder is arranged in the middle of the shell, a brass ring is fixedly sleeved in the middle of the core cylinder, a rotating sleeve is rotatably connected to the outside of the core cylinder, a brass strip is arranged in the middle of the rotating sleeve, and one end, close to the core cylinder, of the brass strip is slidably connected with the brass ring; the flow detection sensor is used for detecting the flow of an oil-gas lubrication branch of the rolling mill; the connecting unit is used for connecting the power supply end of the flow detection sensor with the brass bar; the automatic monitoring device further comprises a controller, the controller is arranged at the upper end of the machine shell, the output ends of the flow detection sensors are electrically connected with the input end of the controller, the multiple flow detection sensors share one input end, and the flow detection sensors can work in turn to monitor all branches. And the operation safety of the oil-gas lubricating system of the rolling mill is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oil-air lubrication system for rolling mills, specifically to an automatic monitoring device for oil-air lubrication system for rolling mills. Background Technology

[0002] Currently, rolling mill bearings typically use tandem bearings, mainly installed on work rolls, intermediate rolls, and support rolls. These bearings require lubrication, and the oil-air lubrication method uses compressed air to deliver thin oil to the bearings. Under the action of the compressed air, the lubricating oil moves forward in a wave-like pattern along the pipe wall and is sprayed onto the lubrication points as fine oil droplets separated from the compressed air. During the lubrication process, monitoring devices are installed to detect the flow rate in the oil circuit to ensure stable mill operation. Due to the large number of lubrication points and the existence of many branches in the oil circuit system, and limited by the controller input points, existing automatic monitoring devices generally only install flow detection sensors in the main oil circuit, only detecting the main oil circuit and not individual branch oil circuits, thus affecting the comprehensiveness of the monitoring. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automatic monitoring device for the oil and gas lubrication system of a rolling mill. Multiple flow detection sensors share a single input terminal. By rotating the rotating sleeve, the flow detection sensors can be powered in turn. The flow detection sensors can work in turn to monitor all branches, which greatly improves the safety of the operation of the oil and gas lubrication system of the rolling mill and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic monitoring device for the oil-gas lubrication system of a rolling mill, comprising a housing, a flow detection sensor, and a connection unit;

[0005] The housing has a core cylinder in its middle, a brass ring is fixed in the middle of the core cylinder, a rotating sleeve is rotatably connected to the outside of the core cylinder, a brass strip is provided in the middle of the rotating sleeve, and the end of the brass strip near the core cylinder is slidably connected to the brass ring.

[0006] Flow detection sensor: used for detecting the flow rate in the oil-air lubrication branch of the rolling mill;

[0007] Connection unit: used for connecting the power supply terminal of the flow detection sensor to the brass strip;

[0008] The system also includes a controller, which is located at the top of the machine housing. The output of the flow detection sensor is electrically connected to the input of the controller, and the input of the brass ring is electrically connected to the output of the controller. The input of the controller is electrically connected to an external power source. The flow detection sensors are installed on each lubrication branch, and multiple flow detection sensors share a single input. The flow detection sensors can be powered in turn by rotating the rotating sleeve. The flow detection sensors can work in turn to monitor all branches, greatly improving the safety of the rolling mill's oil and gas lubrication system.

[0009] Furthermore, the connection unit includes a terminal block, a slide block, and graphite strips. There are multiple terminal blocks, all of which are located in the middle of the housing. Each terminal block has a slide block at one end near the core cylinder. Graphite strips are slidably connected inside each slide block. Each graphite strip is configured to cooperate with a brass strip. Each graphite strip is connected to the terminal block of the same slide block via braided copper wire. The input end of the flow detection sensor is electrically connected to the output end of the terminal block for convenient conductive connection.

[0010] Furthermore, the connecting unit also includes a paddle and a spring. The paddles are respectively disposed at the end of the graphite strip away from the core cylinder. Multiple paddles are slidably connected to vertically corresponding slides. The springs are respectively installed at the end of the slide away from the core cylinder. Multiple springs are located between the paddle and the terminal block inside the same slide, providing pressure to the graphite strip.

[0011] Furthermore, the outer arc surface of the rotating sleeve is provided with two circular rings, and the levers are all configured to cooperate with the two circular rings. The outer arc surface of the two circular rings is provided with grooves, and the grooves correspond to the positions of the brass strips, which facilitates the control of the movement of the levers.

[0012] Furthermore, a stepper motor is provided at the lower end of the housing, and a first gear is provided on the output shaft of the stepper motor. A second gear is provided at the lower end of the rotating sleeve. The second gear meshes with the first gear. The input end of the stepper motor is electrically connected to the output end of the controller to facilitate driving the rotation of the rotating sleeve.

[0013] Furthermore, the upper end of the core cylinder is provided with an encoder, the upper end of the rotating sleeve is provided with a connecting frame, the middle part of the connecting frame is fixedly connected to the input shaft of the encoder, and the output end of the encoder is electrically connected to the input end of the controller to facilitate the determination of the position of the rotating sleeve.

[0014] Furthermore, a warning light is provided at the upper end of the housing, and the input end of the warning light is electrically connected to the output end of the controller to generate an alarm light.

[0015] Furthermore, a conductive spring sheet is provided at one end of the brass strip near the core cylinder. The conductive spring sheet is slidably connected to the brass ring, providing good elastic contact and conductivity.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic monitoring device for the oil-air lubrication system of a rolling mill has the following advantages:

[0017] In use, the flow detection sensor is installed on each lubrication branch. Multiple flow detection sensors share a single input terminal. By rotating the rotating sleeve, the flow detection sensor can be powered in turn. The flow detection sensor can work in turn to monitor all branches, which greatly improves the safety of the rolling mill oil-air lubrication system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the housing of this utility model;

[0020] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0021] Figure 4 This is an enlarged structural diagram of section B of the present invention;

[0022] Figure 5 This is an enlarged structural diagram of point C in this utility model;

[0023] Figure 6 This is an enlarged structural diagram of point D in this utility model.

[0024] In the diagram: 1. Housing, 2. Flow sensor, 3. Core tube, 4. Brass ring, 5. Rotating sleeve, 6. Conductive spring sheet, 7. Connecting unit, 71. Terminal block, 72. Slide block, 73. Graphite strip, 74. Paddle, 75. Spring, 8. Circular ring, 9. Groove, 10. Stepper motor, 11. Gear 1, 12. Gear 2, 13. Controller, 14. Warning light, 15. Encoder, 16. Connecting bracket, 17. Brass strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This embodiment provides a technical solution: an automatic monitoring device for the oil and gas lubrication system of a rolling mill, including a housing 1, a flow detection sensor 2, and a connection unit 7;

[0027] Housing 1: A core cylinder 3 is located in its middle, providing protection for other components. A brass ring 4 is fixedly fitted in the middle of the core cylinder 3, providing support for other components. A rotating sleeve 5 is rotatably connected to the outside of the core cylinder 3. A brass strip 17 is located in the middle of the rotating sleeve 5, with one end of the brass strip 17 near the core cylinder 3 slidably connected to the brass ring 4. A stepper motor 10 is located at the lower end inside the housing 1. A gear 11 is mounted on the output shaft of the stepper motor 10. A gear 12 is located at the lower end of the rotating sleeve 5, meshing with the gear 11. The input end of the stepper motor 10 is electrically connected to the output end of the controller 13. The stepper motor 10 is connected to the output end of the controller 13 via the gear 11. 11 and gear 2 12 drive the rotating sleeve 5 to rotate. The upper end of the core cylinder 3 is equipped with an encoder 15. The upper end of the rotating sleeve 5 is equipped with a connecting frame 16. The middle part of the connecting frame 16 is fixedly connected to the input shaft of the encoder 15. The output end of the encoder 15 is electrically connected to the input end of the controller 13. The rotating sleeve 5 will drive the input shaft of the encoder 15 to rotate through the connecting frame 16. The upper end of the housing 1 is equipped with a warning light 14. The input end of the warning light 14 is electrically connected to the output end of the controller 13. The end of the brass strip 17 near the core cylinder 3 is equipped with a conductive spring plate 6. The conductive spring plate 6 is slidably connected to the brass ring 4. The conductive spring plate 6 is a red copper conductive spring plate with good elastic contact conductivity.

[0028] Flow detection sensor 2: used for detecting the flow rate of the oil-gas lubrication branch of the rolling mill. The flow detection sensor 2 is installed on the oil pipe of the oil-gas lubrication branch of the rolling mill.

[0029] Connection unit 7: Used for connecting the power supply terminal of the flow detection sensor 2 to the brass strip 17. Connection unit 7 includes a terminal block 71, a slide block 72, and a graphite strip 73. There are multiple terminal blocks 71, all located in the middle of the housing 1. The rotating sleeve 5 rotates by the angle between two adjacent terminal blocks 71 and the axis of the rotating sleeve 5. Each of the multiple terminal blocks 71 has a slide block 72 near the core cylinder 3. Graphite strips 73 are slidably connected inside the multiple slide blocks 72, providing sliding guidance for the graphite strips 73. The multiple graphite strips 73 are designed to cooperate with the brass strip 17. The number of terminals 71, slides 72, graphite strips 73, and flow sensors 2 is consistent, preferably eight or more. The rotating sleeve 5 drives the brass strips 17 to rotate synchronously, allowing the brass strips 17 to alternately conduct electricity with the graphite strips 73. Multiple graphite strips 73 are connected to the terminal block 71 of the same slide 72 via braided copper wire. The input terminal of the flow sensor 2 is electrically connected to the output terminal of the terminal block 71, and the positive input terminal of the flow sensor 2 is connected to the terminal of the terminal block 71. The flow sensors 2 and terminal blocks 71 correspond one-to-one. The brass ring 4 and conductive spring sheet 6 are used to connect the graphite strips. Power is supplied to the graphite strip 73 via the terminal block 71, which powers the flow detection sensor 2. The connecting unit 7 also includes a lever 74 and a spring 75. The levers 74 are respectively located at the end of the graphite strip 73 away from the core cylinder 3, and multiple levers 74 are slidably connected to the vertically corresponding slide block 72. The springs 75 are respectively installed at the end of the slide block 72 away from the core cylinder 3, and multiple springs 75 are located between the levers 74 and the terminal block 71 inside the same slide block 72. The number of springs 75 and levers 74 is the same as the number of slide blocks 72. The springs 75 provide pressure to the graphite strip 73 through the levers 74 to ensure the graphite strip 73... 3. The rotating sleeve 5 has two circular rings 8 on its outer arc surface, and the paddle 74 is set to cooperate with the two circular rings 8. The outer arc surface of the two circular rings 8 is provided with grooves 9, and the grooves 9 correspond to the positions of the brass strip 17. The rotating sleeve 5 will drive the circular rings 8 to rotate synchronously, and the circular rings 8 will push the paddle 74, causing the graphite strip 73, which is away from the brass strip 17, to retract into the interior of the slide block 72, reducing the wear of the graphite strip 73. When the graphite strip 73 corresponds to the groove 9, the circular rings 8 will not push the paddle 74, thus facilitating the contact between the graphite strip 73 and the brass strip 17.

[0030] The system includes a controller 13, which is located on the upper part of the housing 1. The output of the flow detection sensor 2 is electrically connected to the input of the controller 13. The negative terminals of multiple detection sensors 2 are connected in parallel to the negative terminal of the controller 13. The data output terminals of multiple detection sensors 2 are connected in parallel to the input of the controller 13. The flow detection sensor 2 detects the flow rate of the liquid in the oil pipe and transmits the detection result to the controller 13. The input of the brass ring 4 is electrically connected to the output of the controller 13. The brass strip 17 is connected to the positive output of the controller 13. The input of the controller 13 is electrically connected to an external power supply. The encoder 15 can transmit the position information of the rotating sleeve 5 to the controller 13. The controller 13 can determine which flow detection sensor 2 is working, and thus determine whether the lubrication branch is working normally. When an abnormal flow is detected, the controller 13 controls the warning light 14 to work. The warning light 14 emits light to warn and remind, facilitating timely maintenance by maintenance personnel.

[0031] The working principle of the automatic monitoring device for the oil-air lubrication system of the rolling mill provided by this utility model is as follows: During use, the flow detection sensor 2 is installed on the oil pipe of the oil-air lubrication branch of the rolling mill. The positive input terminals of the flow detection sensors 2 on multiple branches are connected to the terminals of the terminal block 71, with each flow detection sensor 2 corresponding to a terminal block 71. The negative terminals of multiple detection sensors 2 are connected in parallel and then connected to the negative terminal of the controller 13. The data output terminals of multiple detection sensors 2 are connected in parallel and then connected to the input terminal of the controller 13. The brass strip 17 is connected to the positive output terminal of the controller 13. During operation, the controller 13 controls the stepper motor 10 to operate. The stepper motor 10 drives the rotating sleeve 5 to rotate through gear 11 and gear 2 12. The angle of rotation of the rotating sleeve 5 each time is the angle between the two adjacent terminal blocks 71 and the axis of the rotating sleeve 5. The rotating sleeve 5 drives the brass strip 17 to rotate synchronously, thus allowing the brass strip 17 to alternately conduct with the graphite strip 73. After the two are connected, the controller 13... The graphite strip 73 is powered through the brass ring 4 and the conductive spring sheet 6. The graphite strip 73 powers the flow detection sensor 2 through the terminal block 71. The flow detection sensor 2 then detects the liquid flow in the oil pipe and transmits the detection result to the controller 13. At the same time, the rotating sleeve 5 drives the input shaft of the encoder 15 to rotate through the connecting bracket 16. The encoder 15 can transmit the position information of the rotating sleeve 5 to the controller 13. The controller 13 can determine which flow detection sensor 2 is working, and thus determine whether the lubrication branch is working normally. After the stepper motor 10 stops for a period of time to complete the detection, the stepper motor 10 continues to control the rotating sleeve 5 to rotate by a specified angle, so that the next branch can be detected. As the stepper motor 10 continues to run, all lubrication branches can be detected in turn. When an abnormal flow is detected, the controller 13 controls the warning light 14 to work. The warning light 14 emits light to remind and remind, which facilitates timely maintenance by maintenance personnel.

[0032] It is worth noting that the flow detection sensor 2, stepper motor 10, controller 13, warning light 14, and encoder 15 disclosed in the above embodiments can be freely configured according to the actual application scenario. The flow detection sensor 2 can be a clamp-type flow sensor of the FD-X series, the stepper motor 10 can be a stepper motor of the 57BYG model, the controller 13 can be a touch screen PLC all-in-one machine of the MC-31MR-4MT-700-FX3S-B model, the warning light 14 can be a warning light of the ONN-M4 model, and the encoder 15 can be an encoder of the GES58011 K1 R4096-L model. The controller 13 controls the operation of the flow detection sensor 2, stepper motor 10, warning light 14, and encoder 15 using methods commonly used in the prior art.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automatic monitoring device for the oil-air lubrication system of a rolling mill, characterized in that: It includes a housing (1), a flow detection sensor (2), and a connection unit (7); The housing (1) has a core cylinder (3) in its middle part, a brass ring (4) is fixedly sleeved in the middle part of the core cylinder (3), a rotating sleeve (5) is rotatably connected to the outside of the core cylinder (3), a brass strip (17) is provided in the middle part of the rotating sleeve (5), and the brass strip (17) is slidably connected to the brass ring (4) at one end near the core cylinder (3). Flow detection sensor (2): used for detecting the flow rate of the oil-gas lubrication branch of the rolling mill; Connection unit (7): used for connecting the power supply terminal of the flow detection sensor (2) to the brass strip (17); The controller (13) is located at the upper end of the housing (1). The output end of the flow detection sensor (2) is electrically connected to the input end of the controller (13). The input end of the brass ring (4) is electrically connected to the output end of the controller (13). The input end of the controller (13) is electrically connected to an external power supply.

2. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 1, characterized in that: The connection unit (7) includes a terminal block (71), a slide block (72), and a graphite strip (73). There are multiple terminal blocks (71), all of which are located in the middle of the housing (1). Each terminal block (71) has a slide block (72) at one end near the core cylinder (3). Graphite strips (73) are slidably connected inside each slide block (72). Each graphite strip (73) is matched with a brass strip (17). Each graphite strip (73) is connected to the terminal block (71) of the same slide block (72) by braided copper wire. The input end of the flow detection sensor (2) is electrically connected to the output end of the terminal block (71).

3. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 2, characterized in that: The connecting unit (7) further includes a paddle (74) and a spring (75). The paddles (74) are respectively disposed at the end of the graphite strip (73) away from the core cylinder (3). Multiple paddles (74) are slidably connected to the vertically corresponding slide (72). The springs (75) are respectively installed at the end of the slide (72) away from the core cylinder (3). Multiple springs (75) are located between the paddle (74) and the terminal block (71) inside the same slide (72).

4. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 3, characterized in that: The outer arc surface of the rotating sleeve (5) is provided with two circular ring pieces (8), and the paddle (74) is configured to cooperate with the two circular ring pieces (8). The outer arc surface of the two circular ring pieces (8) is provided with grooves (9), and the grooves (9) correspond to the positions of the brass strip (17).

5. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 1, characterized in that: The lower end of the housing (1) is provided with a stepper motor (10), and the output shaft of the stepper motor (10) is provided with a gear one (11). The lower end of the rotating sleeve (5) is provided with a gear two (12), which meshes with the gear one (11). The input end of the stepper motor (10) is electrically connected to the output end of the controller (13).

6. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 1, characterized in that: The upper end of the core cylinder (3) is provided with an encoder (15), the upper end of the rotating sleeve (5) is provided with a connecting frame (16), the middle part of the connecting frame (16) is fixedly connected to the input shaft of the encoder (15), and the output end of the encoder (15) is electrically connected to the input end of the controller (13).

7. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 1, characterized in that: The upper end of the housing (1) is provided with a warning light (14), and the input end of the warning light (14) is electrically connected to the output end of the controller (13).

8. The automatic monitoring device for the oil-air lubrication system of a rolling mill according to claim 1, characterized in that: The brass strip (17) is provided with a conductive spring plate (6) at one end near the core cylinder (3), and the conductive spring plate (6) is slidably connected to the brass ring (4).

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