CN220727881U - Pump truck lubricating system - Google Patents
Pump truck lubricating system Download PDFInfo
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- CN220727881U CN220727881U CN202322442173.6U CN202322442173U CN220727881U CN 220727881 U CN220727881 U CN 220727881U CN 202322442173 U CN202322442173 U CN 202322442173U CN 220727881 U CN220727881 U CN 220727881U
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- pump truck
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- 230000001050 lubricating effect Effects 0.000 title description 9
- 239000003921 oil Substances 0.000 claims abstract description 113
- 239000010687 lubricating oil Substances 0.000 claims abstract description 52
- 238000005461 lubrication Methods 0.000 claims abstract description 52
- 238000005086 pumping Methods 0.000 claims abstract description 36
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 35
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 7
- 239000004519 grease Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of pump trucks, in particular to a pump truck lubrication system which comprises a double-power lubrication pump, a swing oil cylinder, a first reversing module and a second reversing module, wherein two oil inlets of the first reversing module are respectively connected with two working oil ports of the swing oil cylinder, two oil outlets of the first reversing module are respectively connected with two hydraulic oil ports of the double-power lubrication pump, an oil inlet of the second reversing module is connected with an oil source, and two oil outlets of the second reversing module are connected with two hydraulic oil ports of the double-power lubrication pump; when the pump truck pumps, the first reversing module is conducted, the oil source supplies oil to the two hydraulic oil ports of the double-power lubricating oil pump alternately through the swinging oil cylinder, and when the pump truck stops pumping, the first reversing module is disconnected, and the oil source supplies oil to the two hydraulic oil ports of the double-power lubricating oil pump alternately through the second reversing module. The pump truck lubrication system can increase the oiling time of the double-power lubricating oil pump, reduce the sealing abrasion and prolong the service life.
Description
Technical Field
The utility model relates to the technical field of digital circuits, in particular to a pump truck lubrication system.
Background
The concrete conveying pump truck is a common concrete conveying device in the building construction industry, is provided with a motion and power transmission device, a pumping and stirring device, a cleaning device, a supporting device, a distributing device and other auxiliary devices on a chassis, and has the functions of running and pumping.
The pump truck and the vehicle-mounted pump are in a pump stopping state because of waiting materials or not pumping for a long time, so that the double-power lubricating oil pump does not output lubricating oil, the stirring shaft does not inject lubricating oil for a long time, an oil film between the stirring shaft and the seal is reduced, the lubricating performance is reduced, and the stirring shaft and the seal are worn.
The utility model patent with the patent application number of 201120386722.7 provides a hydraulic drive lubrication pump, so that lubricated equipment always keeps a good working state, the purposes of prolonging the service life, reducing the maintenance time, improving the operation efficiency and not polluting the environment are achieved, but the cost is higher, and the loss of lubricating oil is increased.
Therefore, a pump truck lubrication system capable of lubricating a stirring shaft of a pump truck while controlling cost and reducing lubricating oil loss and ensuring that the stirring shaft always maintains a good working state is urgently needed.
Disclosure of Invention
The utility model aims to provide a pump truck lubrication system which can increase the oiling time of a double-power lubricating oil pump, reduce the sealing abrasion and prolong the service life.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a pump truck lubrication system which comprises a double-power lubrication pump, a swing oil cylinder, a first reversing module and a second reversing module;
two oil inlets of the first reversing module are respectively connected with two working oil ports of the swing oil cylinder, and two oil outlets of the first reversing module are respectively connected with two hydraulic oil ports of the double-power lubricating oil pump;
the oil inlet of the second reversing module is connected with an oil source, and the two oil outlets of the second reversing module are connected with the two hydraulic oil ports of the double-power lubricating oil pump;
when the pump truck is in a pumping working state, the first reversing module is conducted, and the oil source alternately supplies oil to two hydraulic oil ports of the double-power lubricating oil pump through the swing oil cylinder; when the pump truck is in a pumping stop state, the first reversing module is disconnected, two oil outlets of the second reversing module are alternately communicated with two hydraulic oil ports of the double-power lubricating oil pump, and an oil source alternately supplies oil to the two hydraulic oil ports of the double-power lubricating oil pump through the second reversing module.
Further, the second reversing module comprises a three-position four-way electromagnetic valve and a first time relay for controlling the three-position four-way electromagnetic valve to alternately reverse, wherein the first time relay comprises a time delay normally open contact, a time delay normally closed contact and an electromagnetic coil for controlling the time delay actions of the time delay normally open contact and the time delay normally closed contact;
one control coil of the three-position four-way electromagnetic valve is connected in series with the time-delay normally-open contact, and the other control coil is connected in series with the time-delay normally-closed contact; when the pump truck is in a pumping working state, the electromagnetic coil of the first time relay is powered off; when the pump truck is in a pumping stop state, the electromagnetic coil of the first time relay is powered on.
Further, the first reversing module comprises a two-position four-way electromagnetic valve; when the pump truck is in a pumping working state, the valve body of the two-position four-way electromagnetic valve is in a conduction station, and two working oil ports of the swing oil cylinder are communicated with two hydraulic oil ports of the double-power lubricating oil pump through the two-position four-way electromagnetic valve; when the pump truck is in a pumping stop state, the two-position four-way electromagnetic valve is in a stop station, and the two working oil ports of the swing oil cylinder are disconnected with the two hydraulic oil ports of the double-power lubricating oil pump.
Further, the two-position four-way electromagnetic valve comprises an electrified totally-enclosed two-position four-way electromagnetic valve and a normal totally-enclosed two-position four-way electromagnetic valve.
Further, the first reversing module comprises a pair of two-position two-way electromagnetic valves, or a pair of two-position three-way electromagnetic valves, or a two-position two-way electromagnetic valve and a two-position three-way electromagnetic valve;
one cylinder body in the swing cylinder is connected with one hydraulic oil port of the double-power lubricating oil pump through one electromagnetic valve in the first reversing module; the other cylinder body in the swing cylinder is connected with the other hydraulic oil port of the double-power lubricating oil pump through the other electromagnetic valve in the first reversing module.
Further, the two-position two-way solenoid valve comprises a two-position two-way normally-open solenoid valve and a two-position two-way normally-closed solenoid valve; the two-position three-way electromagnetic valve comprises a two-position three-way normally-closed electromagnetic valve and a two-position three-way normally-open electromagnetic valve.
Further, the device also comprises a pressure switch, a pressure sensor of the pressure switch is used for collecting pumping pressure, and when the pressure switch is closed, the first reversing module and the second reversing module execute reversing operation.
Further, the device also comprises a second time relay, wherein the second time relay comprises a time delay normally open contact and an electromagnetic coil for controlling the time delay normally open contact to be closed in a time delay manner; the time-delay normally open contact of the second time relay is connected in series in the power supply circuits of the first reversing module and the second reversing module; when the pressure switch is closed, the electromagnetic coil of the second time relay is powered.
Further, the oil source is connected with the swing oil cylinder and the first reversing module through the third reversing module.
Further, the first reversing module and/or the second reversing module adopts a plate type reversing valve or a threaded cartridge valve or an electromagnetic ball valve.
Compared with the prior art, the utility model has the beneficial effects that:
according to the pump truck lubrication system provided by the utility model, the first reversing module is arranged, so that the communication between the swing oil cylinder and the double-power lubrication oil pump can be cut off when the pump truck stops pumping, the oil source supplies oil to the double-power lubrication oil pump through the second reversing module, the switching of the oil supply mode of the double-power lubrication oil pump is realized, the double-power lubrication oil pump can supply lubrication oil to the pump truck all the time, a good working state is maintained, and the service life is prolonged; the time for oil injection to the double-power lubricating oil pump through the second reversing module and the time interval for oil injection are regulated through the first time relay and the second time relay, so that the use efficiency of lubricating oil is improved, and waste is reduced.
Drawings
Fig. 1 is a schematic diagram of an oil path connection structure of a pump truck lubrication system according to a first embodiment of the present utility model;
FIG. 2 is a circuit diagram of a pump truck lubrication system according to a first embodiment of the present utility model;
fig. 3 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 4 is a circuit diagram of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 5 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 6 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 7 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 8 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 9 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
fig. 10 is a schematic diagram of a connection structure at a first reversing module of an oil path of a pump truck lubrication system according to a second embodiment of the present utility model;
the marks in the drawings are: 1. a double-power lubricating oil pump; 2. swinging the oil cylinder; 3. a first commutation module; 4. a second reversing module; 5. a third commutation module; 6. a first time relay; 7. a second time relay; 8. a control coil; 9. a pressure switch; 10. and (5) an oil source.
Description of the embodiments
According to the pump truck lubrication system provided by the utility model, the vehicle-mounted pump does not pump for a long time due to waiting of materials, the hydraulic system utilizes the swing oil source to provide hydraulic power for the double-power lubrication pump through the first reversing module, so that the oil pump outputs lubrication oil, and the stirring shaft, the sealing and all lubrication points are lubricated by oiling; in the pumping operation of the pump truck, the original oil injection mode of the hydraulic system is restored, namely, the hydraulic power is provided for the double-power lubricating oil pump through reversing of the swing oil cylinder.
The technical scheme of the present application will be described in further detail with reference to the specific embodiments.
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. The embodiments of the present application and the technical features in the embodiments may be combined with each other without conflict.
Examples
The present embodiment provides a pump truck lubrication system, please refer to fig. 1, including a dual-power lubrication pump 1, a swing cylinder 2, a first reversing module 3 and a second reversing module 4. Two oil inlets of the first reversing module 3 are respectively connected with two working oil ports of the swing oil cylinder 2, and two oil outlets of the first reversing module 3 are respectively connected with two hydraulic oil ports of the double-power lubricating oil pump 1; the oil inlet of the second reversing module 4 is connected with an oil source 10, and the two oil outlets of the second reversing module 4 are connected with the two hydraulic oil ports of the double-power lubricating oil pump 1. When the pump truck is in a pumping working state, the first reversing module 3 is conducted, and the oil source 10 alternately supplies oil to two hydraulic oil ports of the double-power lubricating oil pump 1 through the swing oil cylinder 2; when one hydraulic oil port of the double-power lubricating oil pump 1 is used for oil feeding, the piston is pushed to move towards the other hydraulic oil port, the other hydraulic oil port returns oil, the piston reciprocates in the double-power lubricating oil pump 1 under the action of the swinging oil cylinder 2, lubricating grease is pressed out of the double-power lubricating oil pump 1, lubricating oil with certain pressure and flow is provided for a system, and then a stirring shaft and each lubricating point are filled with oil through a progressive distributor. When the pump truck is in a pumping stop state, the first reversing module 3 is disconnected, and two oil outlets of the second reversing module 4 are alternately communicated with two hydraulic oil outlets of the double-power lubricating oil pump 1.
As an embodiment of the present utility model, the second reversing module 4 includes a three-position four-way solenoid valve and a first time relay 6 for controlling the three-position four-way solenoid valve to alternately reverse. Referring to fig. 2, the first time relay 6 includes a time-lapse normally-open contact SJ1-1, a time-lapse normally-closed contact SJ1-2, and an electromagnetic coil SJ1 for controlling time-lapse actions of the time-lapse normally-open contact SJ1-1, the time-lapse normally-closed contact SJ 1-2. One control coil DT2 of the three-position four-way electromagnetic valve is connected with the time-delay normally-open contact in series with SJ1-1, and the other control coil DT3 is connected with the time-delay normally-closed contact SJ1-2 in series.
When the pump truck is in a pumping stop state, the first reversing module 3 is in an off state, the electromagnetic coil SJ1 of the first time relay 6 is electrified, the time delay timing is started, the time delay normally-open contact SJ1-1 is closed in a time delay mode, the time delay normally-closed contact SJ1-2 is opened in a time delay mode, before the time delay is finished, the control coil DT3 is electrified, the time delay is finished, the control coil DT2 is electrified, and therefore reversing of the three-position four-way electromagnetic valve is achieved, and an oil source supplies oil to the double-power lubricating oil pump 1 through the second reversing module 4. When the pump truck is in a pumping working state, the electromagnetic coil SJ1 of the first time relay 6 is powered off, the two control coils DT2 and DT3 of the three-position four-way electromagnetic valve are not powered on, the three-position four-way electromagnetic valve is in a neutral cut-off state, and meanwhile the first reversing module 3 is in a conducting state, and the double-power lubricating oil pump 1 supplies oil through the swing oil cylinder 2.
In some embodiments, the first reversing module 3 may employ an energized fully-closed two-position four-way solenoid valve, with continued reference to fig. 2, in which the valve body of the two-position four-way solenoid valve may be in a conducting position when the control coil DT1 is in a de-energized state, and conversely, in which the valve body of the two-position four-way solenoid valve is switched to a blocking position when the control coil DT1 is in an energized state. Correspondingly, in the control circuit, the control coil DT1 of the two-position four-way electromagnetic valve may be connected in parallel to two ends of the electromagnetic coil SJ1 of the first time relay 6. In order to monitor the pumping state of the pump truck, the embodiment of the utility model adopts a pressure sensor in a pressure switch to detect pumping pressure, and connects the pressure switch into a control circuit of a lubrication system of the pump truck, and with continued reference to fig. 2, when the pumping is stopped and the main pumping pressure of the main system is reduced to below 1Mpa, a digital display pressure switch (the low pressure is set to 1 Mpa) is used to close p1c, switch on the electrical system, the electromagnetic coil SJ of the second delay relay 7 is electrified (the delay time can be preset, for example, set to 5 minutes), the normally open contact SJ of the second delay relay is closed in a delayed manner, and the normally open contact SJ can be set to be 1 minute in a closed manner. When the pumping starts to work, the pressure of the main system is increased by 4Mpa at the lowest pressure, when the pressure exceeds 3Mpa, a digital display pressure switch (the high pressure is set to 3 Mpa) is used for cutting off the power supply of the electric system, so that the electromagnetic coil SJ of the second delay relay 7 is powered off, and the oiling system stops working.
In some embodiments, the high pressure of the pressure switch 9 may be set to 3MP, when the pressure sensor collects pumping pressure exceeding 3Mpa, the pressure switch 9 is turned off, the second time relay 7 is turned off, the low pressure of the pressure switch 9 is set to 1MP, when the pressure sensor collects pumping pressure below 1Mpa, the pressure switch 9 is turned on, the second time relay 7 is set to delay time for 5 minutes, after the time arrives, the delay normally open contact of the second time relay 7 is turned on, the delay normally open contact of the second time relay 7 is set to 1 minute, the first time relay 6 is set to time interval of 3 seconds, and the two control coils 8 in the second commutation module 4 are cyclically and alternately turned on.
When the pump truck is in a pump stopping state, the double-power lubricating oil pump 1 does not output lubricating oil, at the moment, the pressure sensor collects pumping pressure which is reduced to be lower than 1Mpa, the pressure switch 9 is closed, the second time relay 7 is electrified, the time delay normally-open contact of the second time relay 7 is closed after the time arrives under the assumption that the time delay time is set to be 5 minutes, the time delay normally-open contact of the second time relay 7 is set to be 1 minute, the control coil 8 in the electromagnetic valve of the first reversing module 3 is electrified, thereby controlling the electromagnetic valve of the first reversing module 3 to cut off the power of the swinging oil cylinder 2 which is used for supplying oil to the double-power lubricating oil pump 1, meanwhile, the first time relay 6 is electrified, the first time relay 6 is set to have an interval time of 3 seconds, when the time delay normally-closed contact of the first time relay 6 is closed for 3 seconds, the control coil 8 connected with the time delay normally-closed contact in series in the electromagnetic valve of the second reversing module 4 is electrified for 3 seconds, after 3 seconds are reached, the time delay normally-closed contact of the first time relay 6 is opened, the time delay normally-open contact of the first time relay 6 is closed for 3 seconds, the control coil 8 connected in series with the time delay normally-open contact in the electromagnetic valve of the second reversing module 4 is electrified for 3 seconds, when the time delay normally-open contact of the first time relay 6 is closed for 3 seconds, the time delay normally-open contact of the first time relay 6 is opened, the time delay normally-closed contact of the first time relay 6 is closed, the circulation is performed within 1 minute when the time delay normally-open contact of the second time relay 7 is in a closed state, the circulation is performed with the two control coils 8 in the second reversing module 4, the two oil outlets of the second reversing module 4 are alternately communicated with the two hydraulic oil ports of the double-power lubricating oil pump 1, the oil source 10 alternately supplies oil to the two hydraulic oil ports of the double-power lubricating oil pump 1 through the second reversing module 4, the hydraulic oil enters the double-power lubricating oil pump 1 to output lubricating grease, the stirring shaft and each lubricating point are filled with the lubricating grease through the progressive distributor, when the time delay normally open contact of the second time relay 7 is closed for 1 minute, the time delay normally open contact of the second time relay 7 is opened, the first time relay 6 is powered off, the two control coils 8 in the second reversing module 4 stop working, the oil filling is stopped, the second time relay 7 reckons for 5 minutes, the cycle is performed until the pumping pressure rises at the beginning of the pumping work, the pressure sensor collects pumping pressure exceeding 3Mpa, the pressure switch 9 is opened, a circuit is cut off, automatic oil filling is stopped, and the original mode of alternately supplying oil to the two hydraulic oil ports of the double-power lubricating oil pump 1 through the swinging oil cylinder 2 is restored.
Examples
The pump truck lubrication system provided in this embodiment is different from that in the first embodiment in that the first reversing module 3 is different in structure from that in the first embodiment. In this embodiment, the first reversing module 3 may be a normal-position fully-closed two-position four-way solenoid valve, and see fig. 3 in particular. Correspondingly, the control circuit can see fig. 4, the control coil DT1 of the first commutation module 3 is connected in parallel with the electromagnetic coil SJ of the second delay relay 7, and the second delay relay 7 adopts a delay normally closed contact. When plc is closed, the control coil DT1 of the first commutation module 3 is switched to the on state at this time, and the delay normally closed contact SJ of the second delay relay 7 is opened in a delay manner.
As other equivalent alternative embodiments of the present application, the first reversing module 3 may also use an energized fully-closed two-position four-way solenoid valve, a pair of two-position two-way solenoid valves, or a pair of two-position three-way solenoid valves, or a two-position two-way solenoid valve and a two-position three-way solenoid valve, where the two-position two-way solenoid valve includes a two-position two-way normally-open solenoid valve and a two-position two-way normally-closed solenoid valve; the two-position three-way electromagnetic valve comprises a two-position three-way normally-closed electromagnetic valve and a two-position three-way normally-open electromagnetic valve. See in particular fig. 5 to 10. During assembly, one cylinder body in the swing cylinder 2 is connected with one hydraulic oil port of the double-power lubricating oil pump 1 through one electromagnetic valve in the first reversing module 3; the other cylinder body of the swing cylinder 2 is connected with the other hydraulic oil port of the double-power lubricating oil pump 1 through the other electromagnetic valve of the first reversing module 3.
The first reversing module 3 and/or the second reversing module 4 may be a plate type reversing valve or a threaded cartridge valve or an electromagnetic ball valve. The high and low pressure parameters of the pressure switch 9 and the time parameters of the first time relay 6 and the second time relay 7 can be set as required, and the program can be set to judge whether to be regarded as pump stop or not through connecting a button for stopping the pump or manual switch and fluctuation of the range of pressure on the pressure sensor.
In summary, the pump truck lubrication system provided in this embodiment, through the setting of the first reversing module 3, make the pump truck cut off the communication between the oscillating cylinder 2 and the double-power lubrication pump 1 when stopping the pump, thereby realize that oil source 10 supplies oil for double-power lubrication pump 1 through the second reversing module 4, gather pumping pressure control pressure switch 9 through pressure sensor, the mode of automatic switch over for double-power lubrication pump 1 supplies oil, guarantee that double-power lubrication pump 1 can supply lubricating oil for the pump truck all the time, keep good operating condition, increase of service life, adjust the time that oil source 10 carries out the oiling to double-power lubrication pump 1 through the second reversing module 4 through first time relay 6 and second time relay 7, and the time interval of oiling, the availability factor of lubricating oil has been improved, and the waste is reduced.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.
Claims (10)
1. The pump truck lubrication system is characterized by comprising a double-power lubrication pump (1), a swing oil cylinder (2), a first reversing module (3) and a second reversing module (4);
two oil inlets of the first reversing module (3) are respectively connected with two working oil ports of the swing oil cylinder (2), and two oil outlets of the first reversing module (3) are respectively connected with two hydraulic oil ports of the double-power lubricating oil pump (1);
an oil inlet of the second reversing module (4) is connected with an oil source (10), and two oil outlets of the second reversing module (4) are connected with two hydraulic oil ports of the double-power lubricating oil pump (1);
when the pump truck is in a pumping working state, the first reversing module (3) is conducted, and the oil source (10) alternately supplies oil to two hydraulic oil ports of the double-power lubricating oil pump (1) through the swing oil cylinder (2); when the pump truck is in a pumping stop state, the first reversing module (3) is disconnected, two oil outlets of the second reversing module (4) are alternately communicated with two hydraulic oil ports of the double-power lubricating oil pump (1), and the oil source (10) is used for alternately supplying oil to the two hydraulic oil ports of the double-power lubricating oil pump (1) through the second reversing module (4).
2. The pump truck lubrication system according to claim 1, wherein the second reversing module (4) comprises a three-position four-way solenoid valve and a first time relay (6) for controlling the three-position four-way solenoid valve to alternately reverse, and the first time relay (6) comprises a time-delay normally-open contact, a time-delay normally-closed contact and an electromagnetic coil for controlling the time-delay actions of the time-delay normally-open contact and the time-delay normally-closed contact;
one control coil (8) of the three-position four-way electromagnetic valve is connected in series with the time-delay normally-open contact, and the other control coil (8) is connected in series with the time-delay normally-closed contact; when the pump truck is in a pumping working state, the electromagnetic coil of the first time relay (6) is powered off; and when the pump truck is in a pumping stop state, the electromagnetic coil of the first time relay (6) is electrified.
3. Pump truck lubrication system according to claim 2, characterized in that the first commutation module (3) comprises a two-position four-way solenoid valve; when the pump truck is in a pumping working state, a valve body of the two-position four-way electromagnetic valve is in a conduction station, and two working oil ports of the swing oil cylinder (2) are communicated with two hydraulic oil ports of the double-power lubricating oil pump (1) through the two-position four-way electromagnetic valve; when the pump truck is in a pumping stop state, the two-position four-way electromagnetic valve is in a stop station, and two working oil ports of the swing oil cylinder (2) are disconnected with two hydraulic oil ports of the double-power lubricating oil pump (1).
4. The pump truck lubrication system of claim 3, wherein the two-position four-way solenoid valve comprises an energized fully-closed two-position four-way solenoid valve and a normally-closed two-position four-way solenoid valve.
5. Pump truck lubrication system according to claim 2, characterized in that the first commutation module (3) comprises a pair of two-position two-way solenoid valves, or a pair of two-position three-way solenoid valves, or a two-position two-way solenoid valve and a two-position three-way solenoid valve;
one cylinder body in the swing oil cylinder (2) is connected with one hydraulic oil port of the double-power lubricating oil pump (1) through one electromagnetic valve in the first reversing module (3); the other cylinder body in the swing oil cylinder (2) is connected with the other hydraulic oil port of the double-power lubricating oil pump (1) through the other electromagnetic valve in the first reversing module (3).
6. The pump truck lubrication system of claim 5, wherein the two-position two-way solenoid valve comprises a two-position two-way normally open solenoid valve and a two-position two-way normally closed solenoid valve; the two-position three-way electromagnetic valve comprises a two-position three-way normally closed electromagnetic valve and a two-position three-way normally open electromagnetic valve.
7. Pump truck lubrication system according to any of claims 1-6, further comprising a pressure switch (9), a pressure sensor of the pressure switch (9) being used for collecting pumping pressure, the first reversing module (3), the second reversing module (4) performing a reversing operation when the pressure switch (9) is closed.
8. The pump truck lubrication system according to claim 7, further comprising a second time relay (7), the second time relay (7) comprising a time delay normally open contact and an electromagnetic coil controlling the time delay closure of the time delay normally open contact; the time-delay normally open contact of the second time relay (7) is connected in series in the power supply circuits of the first reversing module (3) and the second reversing module (4); when the pressure switch (9) is closed, the electromagnetic coil of the second time relay (7) is powered.
9. Pump truck lubrication system according to claim 1, characterized in that it further comprises a third reversing module (5), through which third reversing module (5) the oil source (10) is connected to the oscillating cylinder (2), the first reversing module (3).
10. Pump truck lubrication system according to claim 1, characterized in that the first reversing module (3) and/or the second reversing module (4) employ a plate reversing valve or a threaded cartridge valve or an electromagnetic ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322442173.6U CN220727881U (en) | 2023-09-08 | 2023-09-08 | Pump truck lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322442173.6U CN220727881U (en) | 2023-09-08 | 2023-09-08 | Pump truck lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220727881U true CN220727881U (en) | 2024-04-05 |
Family
ID=90487522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322442173.6U Active CN220727881U (en) | 2023-09-08 | 2023-09-08 | Pump truck lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220727881U (en) |
-
2023
- 2023-09-08 CN CN202322442173.6U patent/CN220727881U/en active Active
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