Automatic control system for centralized lubrication of rack

Abstract

The utility model discloses an automatic control system for centralized lubrication of a rack, which comprises a stop button, the stop button is connected with a start switch through a lead, the stop button is connected with an oil pump contactor through a cable, the stop button is connected with a change-over switch in parallel through a lead, and the change-over switch is connected with an oil pump contactor through a cable. A limiting mechanism is fixedly connected to the outer wall of the change-over switch, and an electronic control mechanism is arranged on the outer wall of the change-over switch, so that the design that lubricating points of the rack can be automatically lubricated through an oil way transposer and an oil pump contactor in the electronic control mechanism via a control structure can be achieved; the problems that a computer board in an existing control box is high in price and needs to be well maintained during use, otherwise, faults are frequently reported, the maintenance cost is high, the service life is short, automatic lubrication cannot be frequently achieved, manual lubrication is needed, but the control box does not have the manual function, and original oil gun lubrication is needed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bench lubrication, in particular to a bench centralized lubrication automatic control system. Background Art

[0002] Existing test benches generally use dry oil electrical control boxes, but this type of electrical control method still has shortcomings, specifically: the computer board in the control box is expensive, and requires good maintenance during use, otherwise it will cause frequent failures and high maintenance costs. The service life is not long, and automatic lubrication is often not possible, requiring manual lubrication. However, this control box does not have a manual function and requires original oil gun lubrication. Utility Model Content

[0003] The utility model aims to provide a centralized lubrication automatic control system for a bench to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A centralized lubrication automatic control system for a bench, comprising a stop button, the stop button being connected to a start switch through a wire, the stop button being connected to an oil pump contactor through a cable, the stop button being connected in parallel to a conversion switch through a wire, the outer wall of the conversion switch being fixedly connected to a limit mechanism, the conversion switch being connected to a first time delay relay through a cable, the first time delay relay being connected to a first oil circuit position changer through a wire, the first time delay relay being connected in parallel to a double-position four-way valve limit through a wire, the double-position four-way valve limit being electrically connected to a second time delay relay, the second time delay relay and the first time delay relay being connected in parallel to a pressure switch through a wire, the second time delay relay being connected in series to a second oil circuit position changer through a wire, and the double-position four-way valve limit being connected to a third time delay relay through a wire.

[0006] As a preferred solution of the utility model, the limit mechanism includes a limit plate fixedly connected to both sides of the outer wall of the conversion switch knob, the outer wall of the limit plate is fixedly connected to a micro switch on the side away from the conversion switch, the outer wall of the conversion switch is fixedly connected to a fixed plate, a push-pull electromagnet is fixedly connected inside the fixed plate, the outer wall of the push-pull electromagnet is fixedly connected to a positioning pin, the outer wall of the limit plate has a limiting hole above the positioning pin, and the outer wall of the fixed plate is equipped with a terminal.

[0007] As a preferred solution of the utility model, the two-position four-way valve limit and the third delay relay are both provided with two groups.

[0008] As a preferred solution of the utility model, the conversion switch has three gear positions: manual, automatic and middle.

[0009] As a preferred solution of the utility model, the limit plate, fixed plate and positioning pin are all made of ABS plastic, the shape of the limit hole is compatible with the shape of the positioning pin, the fixed plate is provided with three groups, and the positioning pin and push-pull electromagnet are provided with six groups.

[0010] As a preferred solution of the utility model, the positioning pin passes through and extends outside the fixed plate, the connection between the positioning pin and the limit hole and the connection between the positioning pin and the fixed plate are all electrically connected, and the connection between the micro switch, push-pull electromagnet and the terminal are all electrically connected.

[0011] The utility model is provided with an electronic control mechanism, so that the oil circuit position changer and the oil pump contactor in the electronic control mechanism are utilized through the control structure to realize the design of automatically lubricating the lubrication points of the test bench, so that the test bench can be lubricated more conveniently and quickly during the use of the test bench, making the device more convenient and safer when in use, and solving the problem that the computer board in the existing control box is expensive and needs good maintenance when in use, otherwise it will cause frequent malfunctions, high maintenance costs, short service life, often unable to automatically lubricate, and requires manual lubrication, but the control box does not have a manual function and requires original oil gun lubrication.

[0012] The utility model provides a limit mechanism, so that the limit plate and the positioning pin in the limit mechanism can be used to push the structure to realize the design of quickly fixing the knob of the conversion switch, so that the knob of the conversion switch can be fixed more conveniently and quickly during use, making the conversion switch safer when in use, and solving the problem that the knob of the existing conversion switch is easily rotated due to external impact, thereby affecting the use of the conversion switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the utility model;

[0014] Figure 2 This is a top cross-sectional view of the fixed plate of the utility model;

[0015] Figure 3 This is a front cross-sectional view of the limit plate of the utility model;

[0016] Figure 4 This is the circuit diagram of the utility model.

[0017] In the figure: 1. stop button; 2. start switch; 3. oil pump contactor; 4. conversion switch; 5. limit mechanism; 6. first delay relay; 7. first oil circuit positioner; 8. two-position four-way valve limit; 9. second delay relay; 10. pressure switch; 11. second oil circuit positioner; 12. third delay relay; 501. limit plate; 502. micro switch; 503. fixing plate; 504. push-pull electromagnet; 505. positioning pin; 506. limit hole; 507. terminal. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] For examples, see Figure 1-4 , the utility model provides a technical solution:

[0020] A centralized lubrication automatic control system for a bench comprises a stop button 1, the stop button 1 is connected to a start switch 2 through a wire, the stop button 1 is connected to an oil pump contactor 3 through a cable, the stop button 1 is connected to a conversion switch 4 in parallel through a wire, a limit mechanism 5 is fixedly connected to the outer wall of the conversion switch 4, the conversion switch 4 is connected to a first delay relay 6 through a cable, the first delay relay 6 is connected to a first oil circuit position changer 7 through a wire, the first delay relay 6 is connected to a double-position four-way valve limit 8 in parallel through a wire, the double-position four-way valve limit 8 is electrically connected to a second delay relay 9, the second delay relay 9 and the first delay relay 6 are both connected to a pressure switch 10 in parallel through a wire, the second delay relay 9 is connected in series with a second oil circuit position changer 11 through a wire, and the double-position four-way valve limit 8 is connected to a third delay relay 12 through a wire.

[0021] The two-position four-way valve limit 8 and the third delay relay 12 are each provided with two groups, and the conversion switch 4 has three gear positions: manual, automatic and middle.

[0022] In this embodiment, reference Figure 2 and Figure 3The limit mechanism 5 includes a limit plate 501 fixedly connected to both sides of the outer wall of the knob of the conversion switch 4, a micro switch 502 is fixedly connected to the outer wall of the limit plate 501 and on the side away from the conversion switch 4, a fixed plate 503 is fixedly connected to the outer wall of the conversion switch 4, a push-pull electromagnet 504 is fixedly connected inside the fixed plate 503, a positioning pin 505 is fixedly connected to the outer wall of the push-pull electromagnet 504, a limit hole 506 is provided on the outer wall of the limit plate 501 above the positioning pin 505, and a terminal 507 is installed on the outer wall of the fixed plate 503.

[0023] The limiting plate 501, the fixing plate 503 and the positioning pin 505 are all made of ABS plastic. The shape of the limiting hole 506 is matched with the shape of the positioning pin 505. The fixing plate 503 is provided with three groups, and the positioning pins 505 and the push-pull electromagnet 504 are each provided with six groups. The positioning pin 505 penetrates and extends outside the fixing plate 503. The connection method between the positioning pin 505 and the limiting hole 506 and the positioning pin 505 and the fixing plate 503 is electrically connected. The connection method between the micro switch 502, the push-pull electromagnet 504 and the terminal 507 is electrically connected.

[0024] When the bench centralized lubrication automatic control system designed by this scheme is in operation, turn the conversion switch 4 to the automatic gear position, press the start button 2, the oil pump contactor 3 is energized, the oil pump starts working, and the first delay relay 6 is actuated. While waiting for the set time to end, the double-position four-way valve limit 8 supplies oil on Line 1. After the set time of the first delay relay 6 is reached, the normally open auxiliary contact of the first delay relay 6 is closed, and the first oil circuit position changer 7 is connected. The double-position four-way valve limit 8 works to shift to Line 2. After reaching the position, the double-position four-way valve limit 8 is actuated to cut off the power supply of the first delay relay 6, and the second delay relay 9 is connected at the same time. When the electrical appliance 9 is waiting for the set time to end, the two-position four-way valve limit 8 supplies oil on line 2. After the set time of the second delay relay 9 is reached, the normally open auxiliary output point of the second delay relay 9 is closed, and the second oil circuit position changer 11 is connected. After the second oil circuit position changer 11 is connected, the two-position four-way valve limit 8 works to shift to position 1. After reaching the position, the two-position four-way valve limit 8 acts to cut off the power supply of the second delay relay 9 and connect the first delay relay 6 at the same time. At this time, a cycle of the oil supply system ends. If the pressure in the oil circuit is too high, the pressure switch 10 will act to connect the first oil circuit position changer 7 and the second oil circuit position changer 11 in advance to allow the two-position four-way valve limit 8 to shift.

[0025] If a refueling point in the oil circuit cannot be supplied with oil, an external oil pipe can be selected to be connected to the main oil circuit. By pinching the knob of the conversion switch 4, the microswitch 502 in the limit plate 501 is squeezed, and the microswitch 502 is turned on. The microswitch 502 starts the push-pull electromagnet 504, and the push-pull electromagnet 504 drives the positioning pin 505 to move downward, and the positioning pin 505 exits the limit hole 506. The positioning pin 505 no longer blocks the limit plate 501. Turn the knob of the conversion switch 4 to the manual gear position, release the microswitch 502, and the push-pull electromagnet 504 will drive the positioning pin 505 to move upward. The positioning pin 505 moving upward is inserted into the limit hole 506, thereby blocking the limit plate 501. Press the start button 2, the oil pump contactor 3 is energized, and the oil pump works. At this time, the refueling points can be refueled separately.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centralized lubrication automatic control system for a bench, comprising a stop button (1), characterized in that: The stop button (1) is connected to a start switch (2) via a wire, the stop button (1) is connected to an oil pump contactor (3) via a cable, the stop button (1) is connected in parallel to a conversion switch (4) via a wire, an outer wall of the conversion switch (4) is fixedly connected to a limit mechanism (5), the conversion switch (4) is connected to a first time delay relay (6) via a cable, the first time delay relay (6) is connected to a first oil circuit position changer (7) via a wire, the first time delay relay (6) is connected in parallel to a two-position four-way valve limit (8) via a wire, the two-position four-way valve limit (8) is electrically connected to a second time delay relay (9), the second time delay relay (9) and the first time delay relay (6) are both connected in parallel to a pressure switch (10) via a wire, the second time delay relay (9) is connected in series to a second oil circuit position changer (11) via a wire, and the two-position four-way valve limit (8) is connected to a third time delay relay (12) via a wire.

2. The centralized lubrication automatic control system for a test bench according to claim 1 is characterized by: The limiting mechanism (5) comprises limiting plates (501) fixedly connected to both sides of the outer wall of the knob of the conversion switch (4); a micro switch (502) fixedly connected to the outer wall of the limiting plate (501) on the side away from the conversion switch (4); a fixing plate (503) fixedly connected to the outer wall of the conversion switch (4); a push-pull electromagnet (504) fixedly connected inside the fixing plate (503); a positioning pin (505) fixedly connected to the outer wall of the push-pull electromagnet (504); a limiting hole (506) is provided on the outer wall of the limiting plate (501) above the positioning pin (505); and a terminal (507) is installed on the outer wall of the fixing plate (503).

3. The centralized lubrication automatic control system for a test bench according to claim 1 is characterized by: The two-position four-way valve limiter (8) and the third time delay relay (12) are each provided with two groups.

4. The centralized lubrication automatic control system for a test bench according to claim 1 is characterized by: The conversion switch (4) has three gear positions: manual, automatic and intermediate.

5. The centralized lubrication automatic control system for a test bench according to claim 2 is characterized by: The limiting plate (501), the fixing plate (503), and the positioning pin (505) are all made of ABS plastic; the shape of the limiting hole (506) matches the shape of the positioning pin (505); three groups of the fixing plate (503) are provided, and six groups of the positioning pin (505) and the push-pull electromagnet (504) are provided.

6. The centralized lubrication automatic control system for a test bench according to claim 2 is characterized by: The positioning pin (505) passes through and extends outside the fixing plate (503); the connection between the positioning pin (505) and the limiting hole (506) and between the positioning pin (505) and the fixing plate (503) are all electrically connected; and the connection between the micro switch (502), the push-pull electromagnet (504) and the terminal (507) are all electrically connected.

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