Pipe jacking tunnelling machine main shaft
Technical field
The present invention relates to pipe jacking tunnelling machine spindle technology field, specially a kind of pipe jacking tunnelling machine main shaft.
Background technique
Pipe jacking tunnelling machine is a kind of effective tool for removing to excavate pipeline and tunnel by tunneling formula construction method, and push pipe is dug
Mainshaft mechanism into machine is the power take-off mechanism for driving front end cutterhead to rotate.But the push pipe in the prior art used
Lack the structure of bumper and absorbing shock between its main shaft of machine and cutter fixing head, to be easily reduced close between main shaft and cutter fixing head
Effect is sealed, and then is easy waterlogged damage main shaft, thus also improvement is needed to handle.
Summary of the invention
The purpose of the present invention is to provide a kind of pipe jacking tunnelling machine main shafts, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of pipe jacking tunnelling machine main shaft, including it is horizontally disposed
Axis body, the axis body front end is equipped with cutter fixing head, and outer wall is evenly arranged with drive gear wheel, the axis among the axis body
It is connected with graphite oil-free bearing on front side of body, is also equipped with the bearing seal for being clamped graphite oil-free bearing on front side of the axis body in pairs
Lid, the bearing seal cover outer wall is connected with the bearing positioning sleeve of " ring-type " setting, is provided with ladder platform on the axis body, described
Axis body outer wall is connected with the thrust bearing of the terrace before ladder platform, and the axis body outer wall is also connected with the terrace after ladder platform
Gap bearing, the axis body rear end is additionally provided with bearing locating cover, offers oil filler point on the bearing locating cover.
Preferably, bearing positioning sleeve front end also annular is provided with installation protrusion, and cutter fixing head rear end is opened
Equipped with the annular slot to match with installation protrusion, adhesion has fluorine rubber between bottom in the raised front end of the installation and annular slot
Glue is additionally provided with the retaining ring positioned at bearing positioning sleeve rear end on the axis body.
Preferably, the thrust bearing inner ring is also provided with annular groove, and the annular groove is sealed by seccotine and fixed
There are the O-ring seals for being tightly attached to axis body.
Preferably, the cutter fixing head inner wall also equidistantly offers the seal groove of annular setting, and in the seal groove
The sealing ring for being tightly attached to axis body is fixed with by seccotine sealing.
Preferably, the axis body outer wall is additionally provided with the bearing seal cover positioned at thrust bearing and gap bearing outer wall, described
Bearing seal cover inner wall is fixedly linked with ladder platform.
Preferably, the axis body rear and front end extends through bearing seal cover and the setting of bearing locating cover.
Compared with prior art, the beneficial effects of the present invention are:
1, it is connected with graphite oil-free bearing on front side of axis body, between the main shaft made by graphite oil-free bearing and bearing positioning sleeve
Reach good lubrication, is also equipped with the bearing seal cover for being clamped graphite oil-free bearing on front side of axis body in pairs, it is close by bearing
The setting of capping can play the role of sealed graphite oilless bearing, enter shadow in graphite oil-free bearing so as to reduce pollutant
Rotating effect is rung, bearing seal cover outer wall is connected with the bearing positioning sleeve of " ring-type " setting, passes through the setting energy of bearing positioning sleeve
Enough effects that positioning is played to graphite oil-free bearing, and bearing positioning sleeve front end also annular is provided with installation protrusion, and cutter is solid
Determine head rear end and offer matched annular slot, adhesion has fluorine rubber between bottom in the raised front end of installation and annular slot
Glue is additionally provided with the retaining ring positioned at bearing positioning sleeve rear end on axis body, can will by the setting of installation protrusion and annular slot
Axis body and cutter fixing head are plugged and fixed to reduce preset clearance, can be played a buffering by the setting of fluorubber and be subtracted
Function is shaken, so that the relationship between bearing positioning sleeve and cutter fixing head can not only be consolidated, sealing effect is maintained, reduces sewage
The probability in main shaft is penetrated into, can also prevent graphite oil-free bearing from generating offset in jacking digging process, pass through setting for retaining ring
The position of bearing positioning sleeve can be further limited by setting;
2, post gap bearing can be carried out by clamping sealing by bearing locating cover, offers oiling on bearing locating cover
Hole can carry out oiling to gap bearing by the setting of oil filler point, maintain its lubricant effect, reduce running resistance, and axis body
Outer wall is additionally provided with the bearing seal cover positioned at thrust bearing and gap bearing outer wall, bearing seal cover inner wall and ladder platform stationary phase
Even, thrust bearing and gap bearing and ladder platform can be covered by bearing seal cover, thus effective protection axis body
Leakproofness.
Detailed description of the invention
Fig. 1 is overall structure of the present invention;
Fig. 2 is one of the part in structure of the invention Fig. 1 enlarged diagram;
Fig. 3 is two schematic diagrames of the part in structure of the invention Fig. 1.
In figure: 1 axis body, 2 cutter fixing heads, 3 drive gear wheels, 4 graphite oil-free bearings, 5 bearing seal covers, 6 bearings are fixed
Position set, 7 ladder platforms, 8 thrust bearings, 9 gap bearings, 10 bearing locating covers, 11 installation protrusions, 12 fluorubber, 13 retaining rings, 14O
Shape sealing ring, 15 sealing rings, 16 bearing seal covers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of pipe jacking tunnelling machine main shaft, including it is horizontally disposed
Axis body 1,1 front end of axis body is equipped with cutter fixing head 2, so that cutter fixing head 2 is readily disassembled installation, the axis
The intermediate outer wall of body 1 is evenly arranged with drive gear wheel 3, and the quantity of drive gear wheel 3 is set as four, and respectively by four differences
Motor driven, be connected with graphite oil-free bearing 4 on front side of the axis body 1, the main shaft 1 made by graphite oil-free bearing 4 with
Reach good lubrication between bearing positioning sleeve 6, is also equipped in pairs for being clamped graphite oil-free bearing 4 on front side of the axis body 1
Bearing seal cover 5 can play the role of sealed graphite oilless bearing 4 by the setting of bearing seal cover 5, so as to reduce dirt
Dye object, which enters, influences rotating effect in graphite oil-free bearing 4,5 outer wall of bearing seal cover is connected with the bearing of " ring-type " setting
Positioning sleeve 6 can be played the effect of positioning to graphite oil-free bearing 4 by the setting of bearing positioning sleeve 6, be set on the axis body 1
It is equipped with ladder platform 7,1 outer wall of axis body is connected with the thrust bearing 8 of the terrace before ladder platform 7, and 1 outer wall of axis body also connects
It is connected to the gap bearing 9 of terrace after being located at ladder platform 7,1 rear end of axis body is additionally provided with bearing locating cover 10, passes through bearing
Post gap bearing 9 can be carried out clamping sealing by locating cover 10, offered oil filler point on the bearing locating cover 10, passed through note
The setting of oilhole can carry out oiling to gap bearing 9, maintain its lubricant effect, reduce running resistance.
Specifically, 6 front end of bearing positioning sleeve also annular is provided with installation protrusion 11, and after the cutter fixing head 2
End offers the annular slot to match with installation protrusion 11, glues between bottom in raised 11 front ends of the installation and annular slot
It is connected with fluorubber 12, the retaining ring 13 positioned at 6 rear end of bearing positioning sleeve is additionally provided on the axis body 1, by installing raised 11 Hes
Axis body 1 and cutter fixing head 2 can be plugged and fixed to reduce preset clearance for the setting of annular slot, pass through fluorubber 12
Setting can play a pooling feature, so that the pass between bearing positioning sleeve 6 and cutter fixing head 2 can not only be consolidated
System, can also prevent graphite oil-free bearing 4 from generating offset in jacking digging process, can be to bearing by the setting of retaining ring 13
The position of positioning sleeve 6 further limits.
Specifically, 8 inner ring of thrust bearing is also provided with annular groove, and the annular groove is sealed by seccotine and is fixed
There are the O-ring seals 14 for being tightly attached to axis body 1, thrust bearing 8 can be increased by the mutual cooperation of annular groove and O-ring seals 14
The stability of work.
Specifically, 2 inner wall of cutter fixing head also equidistantly offers the seal groove of annular setting, and in the seal groove
The sealing ring 15 for being tightly attached to axis body 1 is fixed with by seccotine sealing, it can be into one by the setting of seal groove and sealing ring 15
Step increases the stability of position between cutter fixing head 2 and axis body 1, can also reduce cutter fixing head 2 and is produced from 1 junction of axis body
Raw deflection.
Specifically, 1 outer wall of axis body is additionally provided with the bearing seal cover 16 positioned at 9 outer wall of thrust bearing 8 and gap bearing,
16 inner wall of bearing seal cover is fixedly linked with ladder platform 7, can be by thrust bearing 8 and gap axis by bearing seal cover 16
Hold 9 and ladder platform 7 covered, thus the leakproofness of effective protection axis body 1.
Specifically, 1 rear and front end of axis body extends through bearing seal cover 5 and bearing locating cover 10 is arranged, pass through axis
It holds sealing cover 5 and bearing locating cover 10 can be respectively that graphite oil-free bearing 4 and gap bearing 9 are protected.
Working principle: a kind of pipe jacking tunnelling machine main shaft of the present invention is connected with graphite oil-free bearing 4 on front side of axis body 1, passes through stone
Reach good lubrication between the black main shaft 1 made of oilless bearing 4 and bearing positioning sleeve 6, is also equipped in pairs for card on front side of axis body 1
The bearing seal cover 5 for connecing graphite oil-free bearing 4 can play the work of sealed graphite oilless bearing 4 by the setting of bearing seal cover 5
With entering in graphite oil-free bearing 4 so as to reducing pollutant influences rotating effect, and 5 outer wall of bearing seal cover is connected with " ring
The bearing positioning sleeve 6 of shape " setting, the effect of positioning can be played by the setting of bearing positioning sleeve 6 to graphite oil-free bearing 4,
And 6 front end of bearing positioning sleeve also annular is provided with installation protrusion 11, and 2 rear end of cutter fixing head offers matched ring
Adhesion has fluorubber 12 between bottom in shape slot, installation 11 front ends of protrusion and annular slot, is additionally provided on axis body 1 positioned at axis
The retaining ring 13 for holding 6 rear end of positioning sleeve, can be by axis body 1 and cutter fixing head 2 by the setting of installation protrusion 11 and annular slot
It is plugged and fixed to reduce preset clearance, a pooling feature can be played by the setting of fluorubber 12, thus can not only
Relationship between enough firm bearing positioning sleeve 6 and cutter fixing head 2, also can prevent graphite oil-free bearing 4 from excavating in jacking
Offset is generated in journey, the position of bearing positioning sleeve 6 can be further limited by the setting of retaining ring 13;Pass through bearing locating cover
10 can carry out post gap bearing 9 clamping sealing, offer oil filler point on bearing locating cover 10, pass through the setting of oil filler point
Oiling can be carried out to gap bearing 9, maintain its lubricant effect, reduce running resistance, and 1 outer wall of axis body is additionally provided with positioned at thrust
The bearing seal cover 16 of 9 outer wall of bearing 8 and gap bearing, 16 inner wall of bearing seal cover are fixedly linked with ladder platform 7, pass through bearing
Sealing shroud 16 can cover thrust bearing 8 and gap bearing 9 and ladder platform 7, thus the sealing of effective protection axis body 1
Property.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.