Summary of the invention
The technical problem to be solved in the present invention just is: at the technical matters of prior art existence; provide a kind of can in time monitoring whether to have butter to enter in the agitator shaft end seal; thereby guaranteed the sealing of shaft end seal; protect main shaft not to be damaged, prolonged the agitator shaft end seal failure diagnosis apparatus of main shaft and bearing life.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of agitator shaft end seal failure diagnosis apparatus, it is characterized in that: it comprises gliding mass, slide bar, spring, setting nut and sensor, slide bar, spring and setting nut all are located in the gliding mass, offer the oil-in and the oil-out that are connected with the butter lubrication piping on the described gliding mass, this oil-in and oil-out communicate and not point-blank; One end of slide bar links to each other with oil-in, and the other end links to each other with setting nut; Slide bar is provided with stage portion, is arranged with spring between stage portion and setting nut; Described sensor be located at the rightabout gliding mass of oil-in on.
Be provided with a pushing block between described oil-in and the slide bar.
The described slide bar position that contacts with gliding mass is provided with packoff.
For being threaded, and offer a center pit on the setting nut between described setting nut and the gliding mass, slide bar is arranged in the center pit of setting nut.
Described sensor adopts touch sensor or inductosyn.
Compared with prior art, the invention has the advantages that: the present invention is simple in structure, on the concrete mixer applicable to all size; Whether the present invention takes to detect has butter to flow to the shaft end seal scheme; according to butter interval property flow feature in the pipeline; before flowing into shaft end seal, butter increases pick-up unit of the present invention on nearby the pipe; when the ram pump or the distribution valve of stirring machine breaks down; not when the shaft end seal fuel feeding; slide bar just can not produce change in displacement; like this; sensor of the present invention will in time send alarm signal; the staff shuts down maintenance ram pump or distribution valve after learning information; so just avoided working on, caused taking place shaft end seal and damage at ram pump or the distribution valve rear stirrer that breaks down; major break downs such as main shaft wearing and tearing.In case shaft end seal and main shaft damage, economic loss is big, and maintenance cycle is long, particularly because of the maintenance that stops production, brings bigger economic loss.
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
Embodiment 1: as depicted in figs. 1 and 2, the agitator shaft end seal failure diagnosis apparatus among the present invention is mainly used in the concrete mixer of single horizontal axis and dual horizontal axle, and it is installed on the butter lubrication piping 11 of concrete mixer.This pick-up unit comprises gliding mass 1, slide bar 3, O-ring seal 4, spring 5, setting nut 6 and sensor 7, and slide bar 3, O-ring seal 4, spring 5 and setting nut 6 all are located in the gliding mass 1.Offer the oil-in 8 and the oil-out 9 that are connected with butter lubrication piping 11 on the gliding mass 1, this oil-in 8 and oil-out 9 communicate and not point-blank.One end of slide bar 3 links to each other with oil-in 8, this oil-in 8 can be blocked when compressing, and the other end links to each other with setting nut 6, is provided with O-ring seal 4 between slide bar 3 and the gliding mass 1 and does not allow butter infiltrate; In the present embodiment, be the plane with the surface of contact of oil-in 8 links on the slide bar 3.This slide bar 3 is provided with a stage portion 12, is arranged with spring 5 between stage portion 12 and setting nut 6.For being threaded, the therefore decrement that can be screwed into or back-out regulating spring 5 by screw thread increases or reduces the elastic force of spring 5 between setting nut 6 and the gliding mass 1; Offer a center pit on the setting nut 6, slide bar 3 is arranged in the center pit of setting nut 6, and with this center pit be clearance fit.The tail end of gliding mass 1 is provided with a sensor 7, and this sensor 7 is by being threaded on the gliding mass 1, can regulate distance between sensor 7 and the slide bar 3 by regulating screw thread, and this sensor 7 can adopt inductosyn, also can adopt touch sensor.
Embodiment 2: as shown in Figure 3, the structure of present embodiment and embodiment 1 is roughly the same, difference is on the slide bar 3 that the surface of contact with oil-in 8 links is a circular conical surface, this conical end face can make slide bar 3 better link to each other with oil-in 8, when slide bar 3 is in the state of blocking oil-in 8, better tightness.The rest may be inferred, and structure of the present invention is not limited to the structure of embodiment, and the surface of contact with oil-in 8 links on this slide bar 3 can also be other shapes.
The principle of work of principle of work: embodiment 1 and embodiment 2 is basic identical, all be to take to detect whether to have butter to flow to the shaft end seal scheme, according to butter interval property flow feature in the pipeline, before flowing into shaft end seal, butter increases pick-up unit of the present invention on nearby the pipe, the pressure oil that comes from oil pump reaches gliding mass 1 through butter lubrication piping 11, flow into from the oil-in 8 of gliding mass 1, oil-out from the gliding mass 19 flows out again, in this process, pressure oil promotes slide bar 3 and moves right, spring 5 is compressed, and sensor 7 detects the action of slide bar 3, sends signal working properly; If what adopt is inductosyn, when slide bar 3 close sensors 7, sensor 7 can send signal; If what adopt is touch sensor, when slide bar 3 was pushed down sensor 7, sensor 7 promptly sent signal.When oil pump rests, under the elastic force of spring 5, promote slide bar 3 and reset, block oil-in 8.In time oil pump work period, sensor 7 does not detect the action of slide bar 3, and sensor 7 sends alarm signal, and prompting does not have oil and flows into shaft end seal.Device of the present invention is installed on the system product of concrete mixer all size; when ram pump or distribution valve break down; not when the shaft end seal fuel feeding; sensor 7 will send alarm signal; the staff in time shuts down maintenance ram pump or distribution valve after learning information; just can avoid after ram pump or distribution valve break down, also allowing stirring machine work on, thereby cause shaft end seal to damage the phenomenon of main shaft wear-out failure.
Embodiment 3: as shown in Figure 4, the agitator shaft end seal failure diagnosis apparatus among the present invention is mainly used in the concrete mixer of single horizontal axis and dual horizontal axle, and it is installed on the butter lubrication piping 11 of concrete mixer.This pick-up unit comprises gliding mass 1, pushing block 2, slide bar 3, O-ring seal 4, spring 5, setting nut 6 and sensor 7, and slide bar 3, O-ring seal 4, spring 5 and setting nut 6 all are located in the gliding mass 1.Offer the oil-in 8 and the oil-out 9 that are connected with butter lubrication piping 11 on the gliding mass 1, this oil-in 8 and oil-out 9 communicate and not point-blank.One end of slide bar 3 links to each other with oil-in 8, and the other end links to each other with setting nut 6, is provided with O-ring seal 4 between slide bar 3 and the gliding mass 1 and does not allow butter infiltrate.Also be provided with pushing block 2 on the slide bar 3 and between the oil-in 8, this pushing block 2 can block oil-in 8, and in the present embodiment, this pushing block 2 adopts steel ball.This slide bar 3 is provided with a stage portion 12, is arranged with spring 5 between stage portion 12 and setting nut 6.Referring to Fig. 2, for being threaded, the therefore decrement that can be screwed into or back-out regulating spring 5 by screw thread increases or reduces the elastic force of spring 5 between setting nut 6 and the gliding mass 1; Offer a center pit on the setting nut 6, slide bar 3 is arranged in the center pit of setting nut 6, and with this center pit be clearance fit.The tail end of gliding mass 1 is provided with a sensor 7, and this sensor 7 is by being threaded on the gliding mass 1, can regulate distance between sensor 7 and the slide bar 3 by regulating screw thread, and this sensor 7 can adopt inductosyn, also can adopt touch sensor.
Principle of work: whether present embodiment is taked to detect has butter to flow to the shaft end seal scheme, according to butter interval property flow feature in the pipeline, before flowing into shaft end seal, butter increases pick-up unit of the present invention on nearby the pipe, the pressure oil that comes from oil pump reaches gliding mass 1 through butter lubrication piping 11, flow into from the oil-in 8 of gliding mass 1, oil-out from the gliding mass 19 flows out again, in this process, pressure oil promotes slide block 2 drive slide bars 3 and moves right, spring 5 is compressed, sensor 7 detects the action of slide bar 3, sends signal working properly; If what adopt is inductosyn, when slide bar 3 close sensors 7, sensor 7 can send signal; If what adopt is touch sensor, when slide bar 3 was pushed down sensor 7, sensor 7 promptly sent signal.When oil pump rests, under the elastic force of spring 5, promote slide bar 3 and reset, slide bar 3 promotes pushing block 2 and blocks oil-in 8.In time oil pump work period, sensor 7 does not detect the action of slide bar 3, and sensor 7 sends alarm signal, and prompting does not have oil and flows into shaft end seal.Device of the present invention is installed on the system product of concrete mixer all size; when ram pump or distribution valve break down; not when the shaft end seal fuel feeding; sensor 7 will send alarm signal; the staff in time shuts down maintenance ram pump or distribution valve after learning information; just can avoid after ram pump or distribution valve break down, also allowing stirring machine work on, thereby cause shaft end seal to damage the phenomenon of main shaft wear-out failure.