CN210510999U - Tower machine slewing bearing raceway lubricating system based on PLC control - Google Patents
Tower machine slewing bearing raceway lubricating system based on PLC control Download PDFInfo
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- CN210510999U CN210510999U CN201921342978.0U CN201921342978U CN210510999U CN 210510999 U CN210510999 U CN 210510999U CN 201921342978 U CN201921342978 U CN 201921342978U CN 210510999 U CN210510999 U CN 210510999U
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Abstract
The utility model discloses a tower machine slewing bearing raceway lubricating system based on PLC control, including electric lubrication system and self-lubricate control system, electric lubrication system includes electronic grease pump, progressive distributor, grease oil filter and oil pipe assembly, self-lubricate control system includes main shaft drive motor encoder, PLC logic controller, auxiliary relay, contactor, bee calling organ and manual operation button, PLC logic controller signal input part respectively with main shaft drive motor encoder, manual operation button signal connection, PLC logic controller signal output part respectively with auxiliary relay, bee calling organ signal connection, auxiliary relay's signal output part is connected with the signal input part of contactor. The utility model has the advantages of reasonable design, add lubricating grease convenient operation, the later stage of being convenient for is overhauld and is maintained, accords with social needs, also suitable batch production and use widely.
Description
Technical Field
The utility model relates to an engineering machine tool technical field specifically is a tower machine slewing bearing raceway lubricating system based on PLC control.
Background
The maintenance is the basis that the tower crane normally works and eliminates the hidden trouble. The slewing bearing of tower crane is an important part of tower crane and is composed of gear ring, seat ring, rolling body, isolating block, connecting bolt and sealing device. The slewing bearing raceway should be regularly filled with grease. The ball type slewing bearing is filled once every 100 hours of operation, and the roller type slewing bearing is filled once every 50 hours. The traditional maintenance method is that lubricating grease is manually and periodically filled, but high-altitude operation risks exist, and potential safety hazards exist in tower crane operation caused by neglecting lubrication by equipment companies. The construction unit hopes to design a device which can automatically fill the slewing bearing with lubricating grease. In view of this, a new technical solution needs to be designed for solution.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tower machine slewing bearing raceway lubricating system based on PLC control to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a tower crane slewing bearing raceway lubricating system based on PLC control comprises an electric lubricating system and an automatic lubricating control system, wherein the electric lubricating system comprises an electric grease pump, a progressive distributor, a grease filter and an oil pipe assembly, the automatic lubricating control system comprises a spindle driving motor encoder, a PLC logic controller, an intermediate relay, a contactor, a buzzer and a manual operation button, the signal input end of the PLC logic controller is respectively in signal connection with the spindle driving motor encoder and the manual operation button, the signal output end of the PLC logic controller is respectively in signal connection with the intermediate relay and the buzzer, the signal output end of the intermediate relay is connected with the signal input end of the contactor, the signal output end of the contactor is connected with the signal control end of the electric grease pump, the inlet end of the electric grease pump is inserted into lubricating grease through a pipeline, the outlet end of the electric grease pump is connected with the inlet end of the grease filter through a pipeline, the outlet end of the grease filter is connected with the inlet end of the progressive distributor through a pipeline, and the outlet end of the progressive distributor is communicated with the inside of the slewing bearing raceway through an oil pipe assembly.
Preferably, the progressive dispenser employs a sheet dispenser, which is composed of a start sheet, a finish sheet, and at least three intermediate sheets.
Preferably, a proximity switch for sensing the action of the piston is arranged in one of the middle sheets of the sheet type distributor, and the proximity switch is connected with a signal input end of the PLC logic controller.
Preferably, the oil pipe assembly comprises a plurality of oil guide pipes corresponding to the starting sheet, the stopping sheet and the middle sheet respectively, oil filling nozzles are distributed on the circumferential outer wall of the slewing bearing raceway, and the outlet ends of the oil guide pipes are connected with the corresponding oil filling nozzles respectively.
Preferably, the grease filter comprises a bottom shell, a filter element cylinder and a filter element cover, wherein a first threaded port, an oil outlet cavity, a second threaded port and an oil inlet cavity are sequentially formed in the upper end face of the bottom shell, an oil outlet joint and an oil inlet joint are respectively installed at the left end and the right end of the bottom shell, the oil inlet cavity is communicated with the oil inlet joint through an oil inlet channel, the oil outlet cavity is communicated with the oil outlet joint through an oil outlet channel, a cylinder body interface extending at the lower end of the filter element cylinder is in threaded fit connection with the second threaded port, and a cover body interface extending at the lower end of the filter element cover is in threaded fit connection with.
Preferably, the inner wall of the filter element cover is provided with electric heating wires, and the lower end face of the bottom shell is provided with an overflow valve communicated with the oil inlet cavity.
Compared with the prior art, the beneficial effects of the utility model are that: the PLC logic controller is used for controlling the electric grease pump to supply oil and lubricate the slewing bearing raceway, so that the reliability is high and the practicability is high; when the progressive distributor is blocked, the proximity switch sends a signal of stopping the movement of the piston to the PLC, and the PLC controls the buzzer to sound so as to give an alarm in time; the grease filter has reasonable structural design, is convenient for subsequent disassembly and assembly, and is convenient for quickly replacing the filter element cylinder. The utility model has the advantages of reasonable design, add lubricating grease convenient operation, the later stage of being convenient for is overhauld and is maintained, accords with social needs, also suitable batch production and use widely.
Drawings
FIG. 1 is a schematic structural diagram of a lubricating system of a slewing bearing raceway of a tower crane based on PLC control;
FIG. 2 is a schematic structural diagram of an oil filter in a lubricating system of a slewing bearing raceway of a tower crane based on PLC control;
FIG. 3 is a flow chart of a manual lubrication process of a raceway lubrication system of a tower crane slewing bearing based on PLC control;
fig. 4 is a flow chart of automatic lubrication of a raceway lubrication system of a tower crane slewing bearing based on PLC control.
In the figure: 1-a PLC logic controller, 2-a spindle driving motor encoder, 3-a manual operation button, 4-a buzzer, 5-an oil pipe assembly, 6-an intermediate relay, 7-a contactor, 8-an electric grease pump, 9-a grease filter, 91-an oil inlet joint, 92-an oil outlet joint, 93-a bottom shell, 931-an oil inlet cavity, 932-a second threaded port, 933-an oil outlet cavity, 934-a first threaded port, 935-an oil inlet channel, 936-an oil outlet channel, 94-a filter element cylinder, 941-a cylinder body interface, 95-a filter element cover, 951-a cover body interface, 952-an electric heating wire, 10-a progressive distributor and 11-a rotary support raceway.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a tower crane slewing bearing raceway lubricating system based on PLC control comprises an electric lubricating system and an automatic lubricating control system, wherein the electric lubricating system comprises an electric grease pump 8, a progressive distributor 10, a grease filter 9 and an oil pipe assembly 5, the automatic lubricating control system comprises a spindle driving motor encoder 2, a PLC logic controller 1, an intermediate relay 6, a contactor 7, a buzzer 4 and a manual operation button 3, the signal input end of the PLC logic controller 1 is respectively in signal connection with the spindle driving motor encoder 2 and the manual operation button 3, the signal output end of the PLC logic controller 1 is respectively in signal connection with the intermediate relay 6 and the buzzer 4, the signal output end of the intermediate relay 6 is connected with the signal input end of the contactor 7, the signal output end of the contactor 7 is connected with the signal control end of the electric grease pump 8, the inlet end of the electric grease pump 8 is inserted into lubricating grease through a pipeline, the outlet end of the electric grease pump 8 is connected with the inlet end of the grease filter 9 through a pipeline, the outlet end of the grease filter 9 is connected with the inlet end of the progressive distributor 10 through a pipeline, and the outlet end of the progressive distributor 10 is communicated with the inside of the slewing bearing raceway 11 through the oil pipe assembly 5.
The main shaft driving motor encoder 2 is installed on a main shaft driving motor of the swing mechanism and used for detecting the operation condition of the swing mechanism. When the accumulative operation of the slewing mechanism reaches a set time, the PLC (programmable logic controller) 1 sends a control signal to the intermediate relay 6, the intermediate relay 6 starts the electric grease pump 8 through the contactor 7, the electric grease pump 8 works to pump lubricating grease, and the lubricating grease sequentially passes through the electric grease pump 8, the grease filter 9, the progressive distributor 10 and the oil pipe assembly 5 and finally enters the slewing bearing raceway 11.
Wherein, the progressive dispenser 10 adopts a sheet type dispenser in the prior art, and the sheet type dispenser is composed of a starting sheet, a final sheet and at least three middle sheets; and a proximity switch used for sensing the action of the piston is arranged in one of the middle sheets of the sheet type distributor and is connected with a signal input end of the PLC logic controller 1.
As long as the piston in any one intermediate piece is blocked and can not act, the pistons in other intermediate pieces are blocked completely, the whole piece type distributor stops working, a proximity switch used for sensing the action of the piston is arranged in one of the intermediate pieces, when the piston is blocked, the proximity switch sends a signal of stopping the movement of the piston to the PLC logic controller 1, and the PLC logic controller 1 controls the buzzer 4 to sound, so that the alarm is given in time.
The oil pipe assembly 5 comprises a plurality of oil guide pipes corresponding to the starting sheet, the stopping sheet and the middle sheet respectively, oil filling nozzles are distributed on the circumferential outer wall of the slewing bearing raceway 11, and the outlet ends of the oil guide pipes are connected with the corresponding oil filling nozzles respectively.
With this arrangement, the grease can be uniformly delivered to the respective slewing bearing lubrication points inside the slewing bearing raceway 11 by the plate distributor.
The inner wall of the filter element cover 95 is provided with an electric heating wire 952, and the lower end surface of the bottom shell 93 is provided with an overflow valve 953 communicated with the oil inlet cavity 931. The electric heating wire 952 can heat the lubricating grease, so that the lubricating grease in alpine regions can keep good fluidity, and the lubricating grease is prevented from being precipitated and deteriorated. When filter core section of thick bamboo 94 is blockked up the back, the inside oil outlet cavity 933 pressure of filter core cover 95 can be bigger and bigger, and when pressure was too big, the grease can flow out from overflow valve 953, then can think that filter core cover 95 needs to wash or change, can in time remind the staff, ensures lubricating system normal operating.
When manual lubrication is carried out, an operator can press the manual operation button for 3 three seconds, and the buzzer sounds to indicate that the manual lubrication signal is successfully input; the PLC logic controller 1 outputs a lubricating signal to drive the electric grease pump 8 to work, when the electric grease pump 8 works, lubricating grease is continuously discharged from an oil outlet, is uniformly transmitted to each slewing bearing lubricating point through the progressive distributor 10, and is filled with lubricating grease for 1 minute. If the lubrication is needed to be continued after 1 minute is finished, the manual operation button 3 can be pressed for a long time again.
During automatic lubrication, the running condition of the swing mechanism is detected through the main shaft driving motor encoder 2, the PLC 1 is internally provided with a timing program, when the swing mechanism runs, the PLC 1 starts timing, and the accumulated running reaches 5 hours. And (3) PLC logic control, wherein the control signal 1 is sent out to drive the electric grease pump 8 to work, so that lubricating grease is continuously discharged from an oil outlet and is uniformly transmitted to a lubricating point of the slewing bearing through the progressive distributor 10. When the slewing mechanism runs, the electric grease pump 8 is driven to fill lubricating grease into the slewing bearing raceway 11 for 2 minutes, if the slewing of the tower crane stops acting in the lubricating process, the electric grease pump also suspends the lubricating, when the slewing of the tower crane acts, the lubricating action is continued, and the electric grease pump stops when 2 minutes is accumulated.
When the oil outlet of the progressive distributor 10 of the electric grease pump 8 is blocked, the proximity switch of the progressive distributor 10 works to send a signal of stopping the movement of the piston to the PLC logic controller 1, and after the PLC logic controller 1 receives the signal, the buzzer 4 sends out an alarm to remind the electric grease pump 8 and the progressive distributor 10 to be overhauled.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a tower machine slewing bearing raceway lubricating system based on PLC control which characterized in that: the lubricating device comprises an electric lubricating system and an automatic lubricating control system, wherein the electric lubricating system comprises an electric grease pump (8), a progressive distributor (10), a grease filter (9) and an oil pipe assembly (5), the automatic lubricating control system comprises a spindle driving motor encoder (2), a PLC (programmable logic controller) 1, an intermediate relay (6), a contactor (7), a buzzer (4) and a manual operation button (3), the signal input end of the PLC (1) is respectively in signal connection with the spindle driving motor encoder (2) and the manual operation button (3), the signal output end of the PLC (1) is respectively in signal connection with the intermediate relay (6) and the buzzer (4), the signal output end of the intermediate relay (6) is connected with the signal input end of the contactor (7), the signal output end of the contactor (7) is connected with the signal control end of the electric grease pump (8), the inlet end of the electric grease pump (8) is inserted into lubricating grease through a pipeline, the outlet end of the electric grease pump (8) is connected with the inlet end of the grease filter (9) through a pipeline, the outlet end of the grease filter (9) is connected with the inlet end of the progressive distributor (10) through a pipeline, and the outlet end of the progressive distributor (10) is communicated with the interior of the slewing bearing raceway (11) through the oil pipe assembly (5).
2. The tower crane slewing bearing raceway lubricating system based on PLC of claim 1, characterized in that: the progressive dispenser (10) employs a sheet dispenser consisting of a start sheet, a finish sheet, and at least three intermediate sheets.
3. The tower crane slewing bearing raceway lubricating system based on PLC of claim 2, characterized in that: and a proximity switch used for sensing the action of the piston is arranged in one of the middle pieces of the piece type distributor and is connected with a signal input end of the PLC (1).
4. The tower crane slewing bearing raceway lubricating system based on PLC of claim 2, characterized in that: the oil pipe assembly (5) comprises a plurality of oil guide pipes corresponding to the starting sheet, the stopping sheet and the middle sheet respectively, oil filling nozzles are distributed on the circumferential outer wall of the slewing bearing raceway (11), and the outlet ends of the oil guide pipes are connected with the corresponding oil filling nozzles respectively.
5. The tower crane slewing bearing raceway lubricating system based on PLC of claim 1, characterized in that: grease oil filter (9) include drain pan (93), filter core section of thick bamboo (94) and filter core cover (95), and first thread mouth (934), oil outlet chamber (933), second thread mouth (932) and oil feed chamber (931) have been seted up in proper order to drain pan (93) up end, and oil outlet joint (92) and oil feed joint (91) are installed respectively to both ends about drain pan (93), oil feed chamber (931) communicate with oil feed joint (91) through oil feed passageway (935), oil outlet chamber (933) is through oil feed passageway (936) and oil outlet joint (92) intercommunication, and barrel interface (941) and second thread mouth (932) screw-thread fit connection that filter core section of thick bamboo (94) lower extreme extended, the cover body interface (951) and first thread mouth (934) screw-thread fit connection that filter core cover (95) lower extreme extended.
6. The tower crane slewing bearing raceway lubricating system based on PLC of claim 5, characterized in that: the inner wall of the filter element cover (95) is provided with electric heating wires (952), and the lower end face of the bottom shell (93) is provided with an overflow valve (953) communicated with the oil inlet cavity (931).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342978.0U CN210510999U (en) | 2019-08-19 | 2019-08-19 | Tower machine slewing bearing raceway lubricating system based on PLC control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342978.0U CN210510999U (en) | 2019-08-19 | 2019-08-19 | Tower machine slewing bearing raceway lubricating system based on PLC control |
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| CN210510999U true CN210510999U (en) | 2020-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586929A (en) * | 2021-09-07 | 2021-11-02 | 三角轮胎股份有限公司 | Method for automatically carrying out secondary lubrication in tire dynamic balance detection |
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2019
- 2019-08-19 CN CN201921342978.0U patent/CN210510999U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586929A (en) * | 2021-09-07 | 2021-11-02 | 三角轮胎股份有限公司 | Method for automatically carrying out secondary lubrication in tire dynamic balance detection |
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