CN106735522A

CN106735522A - A kind of built-in tube cutting machine of well casing

Info

Publication number: CN106735522A
Application number: CN201710042177.1A
Authority: CN
Inventors: 冯克胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-05-31
Anticipated expiration: 2037-01-20
Also published as: CN106735522B

Abstract

The invention discloses a kind of built-in tube cutting machine of well casing, including decelerator, base, shaft coupling, final drive shaft, knife assembly and extension bar；The base is made up of upper lid and sleeve；The final drive shaft is the shaft forgings that middle part is provided with active friction wheel；The knife assembly is made up of support plate, cutting cutter shaft and cutting blade；The final drive shaft is touched located at the center of knife assembly, active friction wheel and the driven friction pulley of cutting cutter shaft of final drive shaft.The present invention, located at well casing top, by knife assembly in well casing, and is connected using by decelerator by shaft coupling and extension bar, implement in well casing inner cut-out well casing, implement the stage excavation of the earthwork beneficial to excavator, keep the intact of precipitation well point, proceed beneficial to base pit dewatering.

Description

A kind of built-in tube cutting machine of well casing

Technical field

The present invention relates to civil engineering base pit dewatering technical field, the deep basal pit for precipitation depth more than 15 meters is pre-buried The cutting of well casing, the especially a kind of built-in tube cutting machine of well casing.

Background technology

Deep pit digging is the important operational procedure of modern heavy construction underground structure, and lowering of watertable is also in foundation ditch Claim Groundwater Control, i.e., meet supporting construction and foundation ditch excavation and construction with lowering of watertable in Foundation Pit Construction will Ask, the level of ground water of construction environment is higher, the depth of foundation requirement is deeper, its difficulty of construction is bigger.

Prior art implements base pit dewatering by being provided with precipitation well point in foundation ditch, is first to beat a bite deep-well, in depth Set in well and the isometric well casing of well depth, the filling gravel composition sand drain between the inwall of deep-well and the outer wall of well casing, in well casing Upper setting well lid, and the air of the vacuum distributive pipe of negative pressure system and positive pressure system is in charge of implementation is worn to well casing by well lid Precipitation.The problem of presence is carried out because the earth excavation of deep basal pit is all layered, i.e., before every layer of earth excavation, will Phreatic table in the floor height foundation ditch drops to this layer by layer below the absolute altitude at bottom, implements earth excavation by excavator, due to many in foundation ditch Place is provided with precipitation well point, hinders the normal operation of excavator, and well casing is overwhelmed, miscued by excavator, or well casing is dug what is broken Phenomenon occurs repeatedly, and causes precipitation well point to be scrapped, and because the deep pit digging that carries out of layering is not yet completed, base pit dewatering need to also be after It is continuous to carry out, can only in foundation ditch complement deep-well, secondary setting precipitation well point, causes the wave of human and material resources and time in foundation ditch Take.

The content of the invention

A kind of built-in tube cutting machine of well casing that the purpose of the present invention is directed to the deficiencies in the prior art and provides, the present invention , located at well casing top, by knife assembly in well casing, and connected by shaft coupling and extension bar using by decelerator, implemented In well casing inner cut-out well casing, the stage excavation of the earthwork is implemented beneficial to excavator, keep the intact of precipitation well point, beneficial to foundation ditch drop Water proceeds.

Realizing the concrete technical scheme of the object of the invention is：

A kind of built-in tube cutting machine of well casing, its feature include decelerator, base, shaft coupling, final drive shaft, knife assembly and Extension bar；

The base is made up of upper lid and sleeve, and upper lid is provided with speed reducer base, inwall and is provided with internal thread, outer wall and is provided with spanner Hole, sleeve is provided with external screw thread and jackscrew, and sleeve is engaged through external screw thread with the internal thread of upper lid；

For one end is provided with, upper axle, the other end are provided with the shaft forgings that lower axle, middle part are provided with active friction wheel to the final drive shaft；

The knife assembly is made up of support plate, cutting cutter shaft and cutting blade, and support plate is provided with base bearing for the center of circle, around circle The heart is peripherally laid with three discs of kidney slot, and for one end is provided with, the upper diameter of axle, the other end are provided with the lower diameter of axle to cutting cutter shaft And external screw thread, middle part are provided with the shaft forgings of driven friction pulley, support plate is two disks, and is be arranged in parallel up and down, and cutting cutter shaft is three Part, is distributed in three kidney slots of support plate, and cuts the kidney-shaped that the upper diameter of axle and the lower diameter of axle of cutter shaft are respectively arranged on support plate In groove, cutting blade located at the lower diameter of axle for cutting cutter shaft and is engaged and fastened by nut with external screw thread；

Located at the center of knife assembly, the upper axle and lower axle of final drive shaft are respectively arranged on upper and lower two support plate to the final drive shaft Base bearing in, the driven friction pulley of the active friction wheel of final drive shaft and cutting cutter shaft is touched；

On the speed reducer base of base, shaft coupling is two pieces to decelerator, be respectively arranged on the output end of decelerator and extension bar and On final drive shaft between the termination of axle and extension bar；

The bus of described support plate kidney slot is involute relative to the center of circle of support plate；Described active friction wheel and driven Friction pulley is circular cone shape.

The present invention using by decelerator located at well casing top, by knife assembly in the well casing, and by shaft coupling and Extension bar is connected, and implements to implement the stage excavation of the earthwork beneficial to excavator in well casing inner cut-out well casing, keeps precipitation well point It is intact, proceed beneficial to base pit dewatering.

Brief description of the drawings

Fig. 1 is structural representation of the invention；

Fig. 2 is the structural representation in A-A sections of Fig. 1；

Fig. 3 is use state schematic diagram of the invention.

Specific embodiment

Refering to Fig. 1, Fig. 2, the present invention includes decelerator 1, base 2, shaft coupling 3, final drive shaft 4, knife assembly 5 and adds Stock 6；

The base 2 is made up of upper lid 21 and sleeve 22, upper lid 21 be provided with speed reducer base 211, inwall be provided with internal thread 212, Outer wall is provided with driving hole 213, and sleeve 22 is provided with external screw thread 221 and jackscrew 222, and sleeve 22 is through external screw thread 221 and upper lid 21 Internal thread 212 is engaged；

For one end is provided with, the upper axle 42, other end is provided with the axle class that lower axle 43, middle part is provided with active friction wheel 41 to the final drive shaft 4 Part；

The knife assembly 5 is made up of support plate 51, cutting cutter shaft 52 and cutting blade 53, and support plate 51 is provided with master for the center of circle Bearing, is peripherally laid with three discs of kidney slot 511 around the center of circle, cutting cutter shaft 52 upper diameter of axle, another for one end is provided with One end is provided with the lower diameter of axle and external screw thread 521, middle part is provided with the shaft forgings of driven friction pulley 522, and support plate 51 is two disks, and up and down It is arranged in parallel, cutting cutter shaft 52 is three, is distributed in three kidney slots 511 of support plate 51, and cuts the upper axle of cutter shaft 52 Footpath and the lower diameter of axle are respectively arranged in the kidney slot 511 of support plate 51, cutting blade 53 located at cutting cutter shaft 52 the lower diameter of axle and by Nut is engaged and fastened with external screw thread 521；

Located at the center of knife assembly 5, the upper axle 42 and lower axle 43 of final drive shaft 4 are respectively arranged on up and down the final drive shaft 4 In the base bearing of two support plates 51, active friction wheel 41 and the driven friction pulley 522 of cutting cutter shaft 52 of final drive shaft 4 are touched；

On the speed reducer base 211 of base 2, shaft coupling 3 is two pieces to decelerator 1, is respectively arranged on the output end of decelerator 1 and adds On stock 6 and final drive shaft 4 between the termination of axle 42 and extension bar 6.

The bus of the described kidney slot 511 of support plate 51 is involute relative to the center of circle of support plate 51.

Described active friction wheel 41 and driven friction pulley 522 are circular cone shape.

With reference to the embodiment of the present invention and accompanying drawing, the present invention is further described as follows：

Refering to Fig. 1, Fig. 2, Fig. 3, for the deep foundation pit precipitation engineering of stage excavation, first having to will be latent in this layer of foundation ditch for the present invention Water level drops to this layer by layer below the absolute altitude at bottom, i.e., before this layer of earth excavation, the present invention is installed in well casing 7, and well casing 7 is cut To the absolute altitude at the bottom layer by layer, after after the stage excavation that excavator implements the earthwork, proceed the dewatering operation of deep basal pit.

Assembling of the invention, it is refering to Fig. 1, Fig. 2, Fig. 3, sleeve 22 is suitable for reading loaded on well casing 7, with jackscrew 222 by sleeve 22 fix with well casing 7；Decelerator 1 is installed on the speed reducer base 211 of upper lid 21；With reference to this layer of absolute altitude choosing at phreatic table layer bottom Select the extension bar 6 of correspondence length；After final drive shaft 4 and knife assembly 5 are assembled, and will be lengthened using first shaft coupling 3 One end of bar 6 is connected with the termination of upper axle 42 of final drive shaft 4；Extension bar 6 is held, and knife assembly 5 is progressively inserted into well casing 7 It is interior, until the other end of extension bar 6 is close to the suitable for reading of well casing；Decelerator 1 is placed in the top of well casing 7 together with upper lid 21, and is used With the output end of decelerator 1 be connected the other end of extension bar 6 by second shaft coupling 3；Upper lid 21 is placed on sleeve 22, and is turned Dynamic upper lid 21, makes the internal thread 212 of lid 21 be engaged with the external screw thread 221 of sleeve 22；Finally, by the power supply of electric cabinet with subtract Fast device 1 is connected.

Work of the invention, refering to Fig. 1, Fig. 2, Fig. 3, starts decelerator 1 and works by electric cabinet, the output of decelerator 1 End drives final drive shaft 4 to rotate by first shaft coupling 3, extension bar 6 and second shaft coupling 3, and by the master of final drive shaft 4 Dynamic friction wheel 41 is transferred to cut the driven friction pulley 522 of cutter shaft 52, drives cutting blade 53 to implement to cut from the inwall of well casing 7 Cut；

The feed process of cutting blade 53 is as follows, is engaged in the driving hole 213 of the outer wall of upper lid 21 with special spanner, rotary upper cover 21, as the internal thread 212 of upper lid 21 rotates on the external screw thread 221 of sleeve 22, upper lid 21 rises vertically relative to sleeve 22 Height, the output end of decelerator 1 is risen by first shaft coupling 3, extension bar 6 and second shaft coupling 3 together with final drive shaft 4 is synchronous Height, the driven friction pulley 522 of the extruding cutting cutter shaft 52 of active friction wheel 41 of final drive shaft 4, makes the upper and lower axle of cutting cutter shaft 52 Footpath support plate 51 kidney slot 511 in along involute the bus of kidney slot 511 to external expansion, it is complete so as to realize cutting blade 53 Cut off from inwall into feed and by well casing；

Decelerator of the invention 1 and final drive shaft 4 and knife assembly 5 are removed, is put into well casing 7 with the soft match of iron wire colligation, most Afterwards, the well casing 7 of cut-off is pulled out from underground, after after the stage excavation that excavator implements the earthwork, proceeds the precipitation of deep basal pit Operation.

Claims

1. the built-in tube cutting machine of a kind of well casing, it is characterised in that it includes decelerator（1）, base（2）, shaft coupling（3）, main biography Moving axis（4）, knife assembly（5）And extension bar（6）；The base（2）By upper lid（21）And sleeve（22）Constitute, upper lid（21） It is provided with speed reducer base（211）, inwall be provided with internal thread（212）, outer wall be provided with driving hole（213）, sleeve（22）It is provided with outer Screw thread（221）And jackscrew（222）, sleeve（22）Through external screw thread（221）With upper lid（21）Internal thread（212）Engagement；

The final drive shaft（4）For one end is provided with upper axle（42）, the other end be provided with lower axle（43）, middle part be provided with active friction wheel （41）Shaft forgings；

The knife assembly（5）By support plate（51）, cutting cutter shaft（52）And cutting blade（53）Composition, support plate（51）For The center of circle is provided with base bearing, and three kidney slots are peripherally laid with around the center of circle（511）Disc, cut cutter shaft（52）It is one end It is provided with the diameter of axle, the other end and is provided with the lower diameter of axle and external screw thread（521）, middle part be provided with driven friction pulley（522）Shaft forgings, support Disk（51）It is two disks, and be arranged in parallel up and down, cuts cutter shaft（52）It is three, is distributed in support plate（51）Three kidney slots （511）It is interior, and cutting cutter shaft（52）The upper diameter of axle and the lower diameter of axle be respectively arranged on support plate（51）Kidney slot（511）It is interior, cutting Blade（53）Located at cutting cutter shaft（52）The lower diameter of axle and by nut and external screw thread（521）Engage and fasten；

The final drive shaft（4）Located at knife assembly（5）Center, final drive shaft（4）Upper axle（42）And lower axle（43）Point She Yu not upper and lower two support plate（51）Base bearing in, final drive shaft（4）Active friction wheel（41）With cutting cutter shaft（52）'s Driven friction pulley（522）Touch；

Decelerator（1）Located at base（2）Speed reducer base（211）On, shaft coupling（3）It is two pieces, is respectively arranged on decelerator（1）'s Output end and extension bar（6）And final drive shaft（4）Upper axle（42）Termination and extension bar（6）Between.

2. the built-in tube cutting machine of well casing according to claim 1, it is characterised in that support plate（51）Kidney slot（511）'s Bus is relative to support plate（51）The center of circle be involute.

3. the built-in tube cutting machine of well casing according to claim 1, it is characterised in that active friction wheel（41）And driven rub Wipe wheel（522）It is circular cone shape.